Food Microbiology

CHAPTER I INTRODUCTION 1. 1 Background Food is one of human sources of calorie, protein, fats, and nutrition. Yet, because of the highly nutritious content, food is susceptible to growth of microorganisms. By the presence of microorganisms in food, the food is more likely to have shorter shelf life. Thus, mostly it is resolved by the addition of antimicrobial substances to food, such as condiments and preservatives. Condiments and preservatives could inhibit the growth of microorganisms or even destroyed them, as they have antimicrobial agents.Some examples of condiments and preservatives are ginger, clove, sodium benzoate, garlic, and coriander. The factors contributing in the effectiveness of condiments and preservatives in inhibiting the growth of microorganisms are the concentration of the antimicrobial, temperature, characteristic of the microorganisms and food, storage time. As different types of microorganisms have different resistance toward the antimicrobial substance, it is important to understand the characteristic of the microorganisms towards the antimicrobial agent.There are two types of resistance: intrinsic resistance and acquired resistance. There are some methods of observing the capability of the condiments in inhibiting the growth of microorganisms. In the experiment, the method used is well diffusion method, which used different type of condiments and added into holes of agar, where by the inhibition zone by the condiments could be observed. The larger the inhibition zone, the more effective the condiment was in inhibiting the growth of microorganisms. 1. 2 Objectives By conducting the experiment, students are expected to learn and observe he effectiveness of antimicrobial substance consisted in condiments and potassium sorbate towards the growth of microorganisms. CHAPTER II LITERATURE REVIEW 2. 1 Antimicrobials Referring to Volk and Wheeler (1993), antimicrobials are the substances that are used to inhibit or kill pathogenic or non-pathog enic microbes. Antimicrobials are also often used as sanitizers and preservatives. Sanitizer is an agent to decrease the amount of microorganisms to the acceptable level. It is generally used in food processing equipments. Antimicrobials are grouped into natural antimicrobials and chemical antimicrobials.According to Fardiaz (1992), antimicrobials may be microstatic, which is inhibitory to the growth of microbes, and microcidal, which means able to kill microbes. Fruit extract is one most susceptible food materials and thus, is often added with preservatives, especially chemical preservatives, stored at low temperature, or pasteurized. Pasteurization is a heating process at 63? C for thirty minutes. This process is aimed to preserve the stability of the food materials (Buckle et al. , 1987). The growth of microbes can be controlled by using various methods, namely physical method, chemical method, and immunological method.The control of microorganism growth is performed to kill the microbes, to inhibit the microbes, and to destroy the microbes. Physical controls can be performed by sterilization with heating or radiation and filtering. Chemical controls can be carried out by using chemical antimicrobial compounds, such as disinfectants and preservatives. Whereas immunological controls can be performed by vaccination (Batzing, 2002). 2. 2 Active Antimicrobial Compounds in Spices 2. 2. 1 Garlic Garlic come from the onion family and are an erect biennial herb, which grow annually. It has irregular roots, condensed, flattened step and narrow and has lat leaves. Garlic’s bulb consists of 6 to 35 bulblets called cloves which enclosed in a thick whitish, glistening, and transparent covering (Anonym1, 2000). According to Ankri and Mirelman (1999), garlic or Allium sativum or lahsoon in Indian name is an edible plant, which has been generating a lot of interest as a medicinal panacea and a cure for a wide variety of different conditions since the human history h as begun. It is reported to have anticancer effects and to reduce blood lipids in human body. Figure 2. 1 shows the approximate composition of fresh garlic. Figure 2. The approximate composition of fresh garlic Source: Ahmad (1996) The active compound found in garlic cloves which have an unusual concentration of sulfur-containing compounds (1-3%) is called allicin. It is a volatile molecule, which is poorly miscible in aqueous solution, and has a strong typical odor of crushed garlic. Chemically, allicin can be synthesized by mild oxidation of diallyl disulfide as presented in Figure 2. 1. It is to be noticed in Figure 2. 2 that there is a compound called alliin which is a stable precusor, that later will be converted to allicin by enzyme called alliinase present in cloves too.Moreover, alliinase is surprisingly found in large amounts in cloves, which is about 10% of the total protein content. Practically, allicin is produced when garlic cloves are cut into or crushed (Ankri and Mir elman, 1999) Figure 2. 2 Generation of allicin in a garlic clove Source: Ankri and Mirelman (1999) According to Ankri and Mirelman (1999), there are several biological activities in allicin such as its activity as an antioxidant and its ability to attack the sulphur (SH) groups in enzymes and proteins while modifying their activities as well.Furthermore, allicin can rapidly penetrate into cells through the cell membranes. In its pure form, allicin has been reputed to exhibit antibacterial activity against a wide range of Gram-negative and Gram-positive bacteria, for instance Escherichia coli that is known to be a multidrug-resistant enterotoxicogenic strains, Salmonella, Staphylococcus, Streptococcus, Klebsiella, Proteus, Bacillus, and Clostridium. It also has antifungal activity that prevents the formation of mycotoxins such as the aflatoxin of Aspergillus parasiticus.Allicin has shown the anticandida activity towards and is effective against the group species of Candida, Cryptococ cus, Trichophyton, Epidermophyton, and Microsporum at only low concentration since it inhibits both the germination of spores and the formation of hyphae. Referring to Dobre et al. (2011), allicin can also attack Aspergillus, Fusarium, and Penecillium species, which are responsible for food poisoning and food decay.The main mechanism of the antimicrobial activity in allicin is the inhibition of certain thiol-containing enzymes in the microorganisms by the super fast reaction of thiosulfinates with thiol groups, such as alcohol dehydrogenase, thioredoxin reductase, and RNA polymerase that later will affect the essential metabolism of cysteine proteinase activity. The reason why microbial cells are highly sensitive to allicin is probably because the lack of glutathione (thiol molecules such as trypanothione) which results of lack of the ability to reactivate the pivotal SH-enzymes that are thiolated by allicin (Ankri and Mirelman, 1999). . 2. 2 Coriander Coriander or Coriandrum sativu m L. is originated from the Mediterranean region and has the appearance of flat shape in the one side while slightly pointed shape is found in the other side. Coriander seed has various lengths between 3 to 5 mm with brown color in ripe state (Sarkar, 2012). Accodring to Rattanachaikunsopon and Phumkhachorn (2010), it has been traditionally used as an analgesic, aphrodisiac, antirheumatic, anti-inflammatory, diuretic, antispasmodic, circulatory stimulant, and antidiabetic. Beside that, coriander is known to have effect in lowering cholesterol. Table 2. shows the composition of coriander seed. Table 2. 3 The coriander seed composition in 1 tsp Total Fat 0. 9g 1% Saturated Fat 0. 00g 0% Monounsaturated Fat 0. 7g Polyunsaturated Fat 0. 1g Cholesterol 0mg 0% Sodium 2mg 0% Total Carbohydrates 2. 7g 1% Dietary Fiber 2. 1 g 8% Protein 0. 6g Vitamin A 0% Vitamin C 2% Calcium 4% Iron 5% Source: Sarkar (2012) The precise volatile compounds acting as antimicrobial compounds have not been exami ned clearly till now, although there are some volatile compounds suggested to be the antimicrobial compound inside coriander which are (2E) – hexenal and (3E) – hexenal (Kubo et al. , 2004).They are reported to have antimicrobial activity against Gram-negative and Gram-positive bacteria such as Escherichia coli O157:H7, Listeria monocytogenes, and Staphylococcus aureus, which are foodborne pathogenic bacteria. It also exhibits bactericidal activity and is reported to have an effective antibacterial. The mechanism of the activity of coriander is membrane damage causing cell death to the bacteria (Silva et al. , 2011). However, according to Uma et al. (2009), coriander seems to not having an effective antifungal activity and its activity toward yeast have not yet been examined further. 2. 2. 3 Black PepperBlack pepper (Pipper nigrum) is a condiment that has been used since ancient times and is native to India. Black pepper is useful for treatment of various sicknesses su ch as vertigo, asthma, fever and also cholera. The volatile oil of black pepper has been shown to have antimicrobial activity as well (Karsha and Lakshmi, 2009). The major antimicrobial compund found in black pepper are monoterpenes and sesquiterpenes (Davidson et al. , 2005). According to Karsha and Lakshmi (2009), black pepper shows strong antimicrobial activity against gram-positive bacteria such as Staphylococcus aureus, Bacillus cereus and Streptococcus faecalis.Gram-negative bacteria such as Pseudomonas aeruginosa, Salmonella typhi and Escherichia coli are affected as well, although the effect on gram-positive bacteria is better. The mechanism of the antimicrobial activity appears to be loss of control over cell membrane permeability. According to Singh et al. (2004), black pepper has antifungal activity as well as it is effective in stopping the growth of molds such as Fusarium graminearum. Black pepper is also shown to be able to inhibit the growth of yeast such as Candida a lbicans (Joe et al. , 2009). 2. 2. 4 Potassium SorbatePotassium sorbate are currently one of the most widely used preservative and can be used to preserve foods, animal feeds, pharmaceuticals, and cosmetics. Potassium sorbate may be manufactured as a powder or granules and has an antimicrobial potency of 74% compared to sorbic acid. The molecular weight of potassium sorbate is 150. 22 and is the most soluble form of sorbate compared to the others, such as calcium sorbate and sodium sorbate. Besides good solubility, potassium sorbate is also has good stability and easy to manufacture, making it the most used form of sorbate in food industry.Sorbate is very effective when used against bacteria, molds, and yeasts. Yeasts inhibited by sorbate are Brettanomyces, Candida, Cryptococccus, Debaryomyces, Endomycopsis, Hansenula, Kloeckera, Pichia, Rhodotorula, Saccharomyces, Sporobolomyces, Torulaspora, Torulopsis, and Zygosaccharomyces. Molds species inhibited by sorbate are Alternaria, Asco chyta, Ascosphaera, Aspergillus, Botrytis, Cephalosporium, Chaetomium, Cladosporium, Colletotrichum, Cunninghamella, Curvularia, Fusarium, Geotrichum, Gliocladium, Helminthosporium,Heterosporium, Humicola, Monilia, Mucor, Penicillium, Phoma, Pepularia, Pestalotiopsis, Pullularia, Rhizoctonia, Rhizopus, Rosellinia, Sporotrichum, Trichoderma, Truncatella, Ulocladium, and others. While for bacteria, the species inhibited are Acetobacter, Achromobacter, Acinetobacter, Enterobacter, Aeromonas, Alcaligenes, Alteromonas, Arthrobacter, Bacillus, Campylobacter, Clostridium, Escherichia, Klebsiella, Lactobacillus, Micrococcus, Moraxella, Mycobacterium, Pediococcus, Proteus, Pseudomonas, Salmonella, Serratia, Staphylococcus, Vibrio, Yersinia, and others (Davidson et al. , 2005). 2. 3Mechanism of Antimicrobials There exist some mechanisms of antimicrobial activity in inhibiting the growth of microbes. The antimicrobials are classified into: cell wall destructor, cell wall permeability intervent ion, destructor of proteins, nucleic acids, and enzymes, antimetabolites, inhibitors of nucleic acid synthesis, and cell plasmolysis (Fardiaz and Betty, 1989). Referring to Fardiaz and Betty (1989), the broken cell wall of microorganisms will cause the cell content to depart from the cell and thus, inhibit the cell metabolisms. Severe destructions on the cell may cause the death of the cell.Lysozyme is one of the enzymes that are able to destruct the cell wall of Gram-positive bacteria. An enzyme produced by a bacterium might be able to inhibit the growth of other microbes. There is also a type of antimicrobials that is able to inhibit the formation of cell wall materials. These cells that do not have cell wall are called protoplast. Protoplast is very easily broken, except when placed in isotonic medium. Penicillin and cycloserin are examples of compounds that retard the formation of peptidoglycan in developing cell. Gram-positive bacteria are susceptible to penicillin as they have lots of peptidoglycans.The breaking of plasma membrane and leakage of cell content will inhibit the microorganism growth or even kill the microorganisms. The implication if the cell destruction is the enzymes will not be able to function properly in the cell metabolism. However, antimicrobials that intervene the cell wall permeability are rarely used in food industries (Fardiaz and Betty, 1989). Compounds destructing the protein and nucleic acid are able to destroy cells. This type of destruction is unfixable. For instance, certain amount of alcohol and sodium chloride are able to denaturate the proteins.Those two compounds are often used in food industries (Fardiaz and Betty, 1989). Antimetabolites are the compounds that are similar to natural metabolites. These antimetabolites will interrupt the metabolisms in the cell. The interruption of the metabolisms might retard the cell growth or even kill the cell. Furthermore, the synthesis of DNA and RNA may be inhibited by some antimic robial compounds, namely the compounds that are able to retard the formation of nucleic acid arrangement and compounds that inhibit the nucleic acid polymerization (Fardiaz and Betty, 1989).Plasmolysis or the breakage of a cell is caused by the high plasmolysis pressure. Materials that are often used in food to promote the cell plasmolysis are salt and sugar. Salt and sugar are considered to be able to increase the osmotic pressure in food materials therefore plasmolysis takes place (Fardiaz and Betty, 1989). 2. 4 Antimicrobial Sensitivity towards Microbial Defense Microorganisms have the ability to resist some types of antimicrobial substances. There are two types of resistance in microorganisms toward antimicrobial agents, such as intrinsic or natural resistance and acquired resistance.The antimicrobial agents in intrinsic resistance could not affect the microorganisms, as they have no target sites, which are the microorganisms, to affect. In contrary, in microorganisms that donâ €™t have the intrinsic resistance, the antimicrobial substance could gradually enter the microbial cell and affecting the activity of the microorganisms, as the microorganisms’ cell membrane have lower permeability to antimicrobial substance (Sosa et al. , 2010). Furthermore, in acquired resistance, the microorganisms are naturally vulnerable, as they need specific ways for preventing to be affected by the antimicrobial substances.Some examples of the specific ways are the presence of enzyme that has the ability to inactivate the antimicrobial agent, or alternative enzyme that has the ability to inhibit the activity of antimicrobial agent. Then, it also happens when there is mutation and post-transcriptional and posttranslational in the microorganisms that are the target of the antimicrobial agent. Thus, these will reduce the binding of the antimicrobial agent (Sosa et al. , 2010). Every microorganism has different sensitivity towards different type antimicrobial agents. Coriander (Coriandrum sativum L. is mostly used as seasoning condiment. According to Kubo et al. (2004), in the leaves of coriander, there are volatile oils that are suggested to have antimicrobial properties against food born pathogen, such as Salmonella species, which are gram-negative bacteria. Black pepper (Piper nigrum L. ) is used mostly in food as seasoning condiments. The aqueous and ethanolic extract of black pepper is very effective for inhibiting antibacterial activity agains penicillin G resistant strain of Staphylococcus aureus, Bacillus cereus and Bacillus subtilis (Chaudhry and Tariq, 2006).According to Karsha and Lakshmi (2010) experiment, gram-positive bacteria were more susceptible towards antimicrobial in black pepper than gramnegative bacteria. In gram-positive bacteria, the most susceptible towards antimicrobial in black pepper is Staphylococcus and followed by Bacillus and Streptococcus. Furthermore, among gram-negative bacteria, the most susceptible towards an timicrobial in black pepper is Pseudomonas, followed by E. coli, Klebsiella and Salmonella. Garlic (Allium sativum) is commonly used for antifungal, antiviral, antibacterial, antihelmantic, antiseptic and anti-infamatory.Garlic extract is effevtive in inhibiting the microbial activity of both gram-positive and gramnegative bacteria. Several examples of the gram-negative bacteria are E. coli, Salmonella species and Citrobacter Enterobacter, Pseudomon, Kilabsella) and the gram-positive bacteria are Pseudomonas aeruginosa, Salmonella typhi, Proteus, spp. , Staphylococcus aureus, S. pneumonia Group A streptococcus and Bacillus anthrax (Daka, 2011; Durairaj, 2009). Potassium sorbate is used as preservative in food as the sorbic acid is more effective than benzoic acid in preserving food. The preservation process occurs in higher pH.It is effective to inhibit the microbial activity of Pseudomonas species, which are categorized as gram-positive bacteria (Beuchat, 1980). Mostly, gram-positi ve bacteria are more sensitive towards antimicrobial agent than gram-negative bacteria (Torrence and Isaacson, 2003). 2. 5 Factors Affecting Microorganism Strength towards Antimicrobial Compounds The resistance of microbes towards particular antimicrobial compound is dependent on several factors that contained in that particular microbe such as the cell wall, protein content, nucleic acid, and membrane cell (Lay, 2002).There are several types of microbes that have cell walls, and an antimicrobial compound that can affect the mechanism of the cell wall that influence the microbial resistance. Anti-microbial compounds may interfere with the work of the cell wall as well as peptidoglycan biosynthesis, which is the process in prokaryotic cell wall structure construction. Disruption of peptidoglycan may affect the resistance and sensitivity of microbes to changes in osmotic perspective (Lay, 2002). Microbes also contain nucleic acids.The nucleic acid can be affected by antimicrobial comp unds where the enzymes that are going to be used for the synthesis of nucleic acid are inhibited. The example is rifampin where it binds the enzyme RNA polymerase, quinolone as well as binding enzyme DNA gyrase (Lay, 2002). The resistance of microbes can be affected by the metabolism of the microbes. Enzyme that catalyzes the synthesis of essential molecules can be inhibited by antimetabolite. Antimetabolite is the antimicrobial that is used for inhibiting the growth of microbes. An example of antimetabolite is the sulfinylamide (Lay, 2002).In general, most living cells including microorganisms has the ability to control what is going in and out of the membrane. If there is a rupture in the membrane, it will cause the spillage of the essential inorganic ions. Thus, rupture in the cell membrane can affect the growth and death of the microbes (Lay, 2002). 2. 6 Methods of Microbial Defense towards Antimicrobial Activity 2. 6. 1 Well Diffusion Method Well diffusion method is done by pou ring the microbial suspension that is going to be tested into a sterile Petri dish continued by pouring the media agar into the dish. Then, the Petri dishes are mixed by the eight movement ethod to allow even mixing. The media is then allowed to be solidified and cynlidrical holes are made. The holes are then filled with antimicrobial agents to be tested. The cup was incubated at 37Â °C for two days and then observed on the antimicrobial activity of the tested microbial suspension. Antimicrobial ingredients poured into the well are able to spread evenly as it can diffuse in all directions around the microbial suspension. Once incubated, usually will form a clean circular zone of microbes. This method can be used to test several different types of antimicrobial agents. (Smith, 2005) 2. 6. Kirby Bauer Disc Method One of the easy methods to test the vulnerability of organisms towards the antimicrobial agents is by inoculating the agar with culture and allowing the antimicrobes to diff use to the media agar. The discs that contain antimicrobial agents are placed on the surface of the plate that has the organisms that are going to be tested. At particular distance on respective discs, the antimicrobes will diffuse to a point where the antimicrobes are unable to inhibit the microbial growth. Antimicrobial effectiveness is shown by the inhibition zones. Inhibition zone appears as clean areas that surround the disc.The diameter zone can be measured by using ruler and the result of the experiment considered to be one antibiogram. (Smith, 2005) 2. 6. 3 MIC and MBC The antimicrobial activity can be observed by knowing the concentration of the antimicrobial agents that are going to be used by reducing the total critical number of bacteria that caused their death. MIC (minimum inhibitor concentration) from an antimicrobes can be known by providing the antimicrobial agents into two serial dilutions in series tubes or can be done by well method in a media that has been inocu lated with bacteria.Series tubes that have been filled with antimicrobial agents are incubated to see the growth of the bacteria and the turbidity is observed. The increment in turbidity indicates the growth of the microbes. MIC is the lowest concentration of an antimicrobial agent where the grwoth can be inhibited completely. (Smith, 2005) MBC (minimum bactericidal concentration) is the total number of antimicrobial agents that is required to kill organisms.MBC is done by taking a part from each serial tubes from the MIC that does not show any growth of the bacteria that has been incubated, The samples is taken from respective tubes that has been incubated in pour plate media. MBC is the lowest concentration of antimicrobial agents that are able to kill at least 99. 9% of the inoculums that has been incubated (Smith, 2005). 2. 7 Food Preservatives Preservatives are commonly used to prevent destruction of physical, chemical and microbiological food. Use of antimicrobial preservative s combined with other preservatives so that the preservation of the food will be maximized.According Fellows (2000), the criteria for antimicrobial preservative in food are the usage and is more efficient which when dissolved in water, stable in storage, non-toxic, low antimicrobial concentrations but has a wide range, optimum efficiency at room temperature, non-corrosive, odorless, and its high penetrative ability to the food. Based on its mechanism, the antimicrobial agent acts as the rupture of the cell wall When there is a rupture on the cell wall, the cell contents will spill out thus inhibiting the metabolism of cells. The destruction of the cell wall can result in cell death.Lysozyme can damage the cell walls of Gram-positive bacteria. Penicillin and sikloserin inhibit the growth of peptidoglycan in the cell develops. Gram-positive bacteria is sensitive towards penicillin as the high level of peptidoglycan content. Damage to the cell wall would also cause damage to the plasma membrane (Fellows, 2000). NaCl and alcohol is often used to preserve food because it can cause denaturation of proteins and nucleic acids that can destroy the cell and cannot be repaired. While H2O2 is an antimicrobial that can destroy the enzyme activity of microbes.Compounds inhibiting the formation of nucleic acids and nucleic acid polymerization inhibitor compounds can inhibit the synthesis of both DNA and RNA. The use of salt and sugar can cause plasmolysis the microbial cell. Since the osmotic pressure on microbial too high, so that the cells undergo plasmolisis and can inhibit the growth of microbes (Fellows, 2000). Ascorbic acid can inhibit the growth of bacteria and molds in a way to inactivate the enzyme fatty acid dehydrogenase. Ascorbic acid can work optimally at a pH above 6. 5.Propionic acid is at its most effectiveness to inhibit molds and yeasts with maximal activity at pH above 5. Acetic acid as vinegar used to preserve bread in order to prevent mold contamination, but vinegar cannot inhibit the growth of yeasts. Acetic acid work optimally at low pH (acid). Ethylene oxide and propylene oxide can be used as a fumigant in spices and flour. Sodium or potassium nitrite and nitrate are commonly used for preservatives in meat products. Maximum working power of nitrite compounds is pH of about 57. Nitrite also serves to inhibit Clostridium botulinum, Acinetobacter, Moraxella, Flavobacterium,Pseudomonas, Enterobacter, Escherichia, and some micrococcus. Nitrites are heated simultaneously with foods will provide the growth inhibitory effect against microbes ten times greater than that of nitrite without heating (Fellows, 2000). CHAPTER III MATERIALS AND METHOD 3. 1 Materials and Equipments Equipments that are used in the experiment are balance, blender, grater, dilution bottle, autoclave, waterbath, refrigerator, vernier caliper, tip with the cuttop, sterile toothpicks, sterile petri dishes, micropipette, tip (10 ml and 100Â µl), and Bunsen’s b urner.Materials that are used are spices (black pepper, garlic, and coriander), potassium sorbate, alcohol, aquadest, bacteria culture (Bacillus subtilis), yeast culture (Candida tropicalis), mold culture (Aspergillus oryzae), PCA media, and NA media. 3. 2 Procedures 3. 2. 1 Extract Preparation 1. Spices were weighed up to 3 grams and reduced in size. 2. The spices were mixed with 10mL of ethanol into Erlenmeyer flasks. 3. 2. 2 Antimicrobial Assay 1. 1mL of culture is added into Petri plate 2. The matching medium is added into the Petri plates (NA for B. subtilis and PDA for A. ryzae and C. tropicalis) 3. The media were let to solidify. 4. Holes were made by using tips with cut-tops. 5. Mixtures of spices were added into the holes. 6. The plates were incubated were incubated for 48 hours in 37? C. CHAPTER IV RESULTS AND DISSCUSION 4. 1 Effect of Antimicrobial Compounds Towards Microbial Growth 4. 1. 1 Garlic Table 4. 1 Observation result of inhibitory activity by garlic From Table 4 . 1, it can be seen that the microorganism that was the most susceptible to allicin contained in garlic, judging by the largest area inhibition, was Bacillus subtilis.There were even no growths in some Petri dishes that meant that the effectiveness of allicin as the antimicrobial compound could be found most when it was applied for bacteria, which was Bacillus subtilis in particular. It matched with the previous literature discussed stating that allicin is an active compound in garlic that attacks the cell membrane in microorganism. However, there was an error found in the experiment from Group 4, which resulted in no inhibition found from Bacillus subtilis. This might happen due to the absence of the allicin itself or the ontamination happened which might result in the building of the resistance towards antimicrobial compound. Afterwards, it can be seen from the experiment that Candida tropicalis and Aspergillus oryzae shared almost the same result, which means that they were also susceptible to allicin. The uneven inhibition found in Candida tropicalis showing the largest inhibition (7. 23mm) beyond the inhibition done for Bacillus subtilis might happen because of the uneven diffusion of the active antimicrobial compound to the dishes. It still matched the theory since allicin has antibacteria and antifungal activity towards the species mentioned above.From the result, it can be concluded that garlic can be used as the antimicrobial compound in food to prevent foodborne disease and food poisoning. However, the concentration of garlic has to be concerned since it has strong odor and may be unpleasant to some people. 4. 1. 2 Coriander Table 4. 2 Observation result of inhibitory activity by coriander From Table 4. 2, it can be seen that coriander is found to be effective as an antimicrobial compound most in Bacillus subtilis, although some of the dishes showed no area of inhibitions.The disappearance of Bacillus subtilis in most of Petri dishes shown by no grow th sign indicated that coriander worked best to inhibit bacteria. This result matched with the previous literature stating that coriander inhibits food pathogenic bacteria, especially Gram-positive bacteria. However, coriander has the least inhibition activity towards Candida tropicalis and Aspergillus oryzae was found to be less susceptible to the volatile compound in coriander acting as antimicrobial compound. There were almost no area of inhibition found in every petri dish, proving that coriander did not affect mold and yeast.Since the literature stated that coriander has almost no antifungal activity and its activity toward yeast has not been examined, the result matched them. 4. 1. 3 Black Pepper Table 4. 3 Observation result of inhibitory activity by black pepper From the result of the experiment, it can be seen that black pepper is most effective when used against Bacillus subtilis, as many bacteria were inactivated, indicated by the area of clear zone, which in some plates, all of them doesn’t grow at all and so the area of clear zone can’t be measured.Aspergillus oryzae are quite susceptible as well to black pepper’s antimicrobial compound as the area of inhibition overall is large. While the most resistant microorganism from the experiment shown is Candida tropicalis, as the area of inhibition is relatively small. From the theory, black pepper shows antimicrobial activity against bacteria, molds, and yeasts, but the strongest towards bacteria, especially Grampositive bacteria. The result of the experiment matches the theory, as black pepper is very effective in stopping the growth of Bacillus subtilis, which is a Grampositive bacterium.It also inhibited the growth of Candida tropicalis and Aspergillus oryzae, so the result of the experiment matches the theory. 4. 1. 4 Potassium Sorbate Table 4. 4 Observation result of inhibitory activity by potassium sorbate From the result of the experiment, it can be seen that potassium sorbat e is very effective in stopping the growth of Bacillus subtilis, as in some plates it inhibited the growth of all the bacteria and so the area of clear zone can’t be measured. Antimicrobial activity can be seen as well towards Candida tropicalis and Aspergillus oryzae.According to the theory, potassium sorbate is very effective when used to inhibit the growth of bacteria, molds, and yeasts. The result of the experiment matches the theory, as potassium sorbate in this experiment is able to stop the growth of Bacillus subtilis, Candida tropicalis, and Aspergillus Oryzae. 4. 2 Microbial Defense Towards Antimicrobial Compounds 4. 2. 1 Bacteria (Bacillus subtilis) Table 4. 4 Table of diameter of inhibition zone of Bacillus subtilis in some condiments From the table 4. 4, it is shown that the most effective condiment in affecting the microbial defense of the Bacillus subtilis for its growth is arlic. Also, the least effective condiment for inhibiting the growth of Bacillus subtilis is coriander. According to the theory, garlic is effective for both Gram-negative and Grampositive bacteria, thus the inhibition zone is larger. Also, coriander is effective in inhibiting Gram-negative bacteria, as in the experiment the bacteria used was Gram-positive bacteria, thus, coriander is not effective in inhibiting Bacillus subtilis. The experiment result has shown the same result as the theory given. 4. 2. 2 Yeast (Candida tropicalis) Table 4. 5Table of diameter of inhibition zone of Candida tropicalis in some condimentsIn the table 4. 5, it shown that the most effective condiment in affecting the microbial defense and microbial growth of Candida tropicalis is garlic and the least effective is coriander. According to the theory, garlic is used as antifungal and is the most effective one in inhibiting the growth of bacteria, molds and yeast. Thus, the inhibition zone of garlic is the largest. Also, as coriander is mostly effective in inhibiting Gram-negative bacteria, the rate of inhibition of yeast is lower, so the inhibition zone is smaller. The experiment result has shown the exact result as the theory given. 4. 2. Molds (Aspergillus oryzae) Table 4. 6 Table of diameter of inhibition zone of Aspergillus oryzae in some condiments The experiment result has shown that the most effective condiment towards the inhibition zone in Aspergillus oryzae media is garlic and the least effective condiment is coriander. Referring to the theory, garlic is mostly used as antifungal and the most effective condiment used in the experiment to inhibit the growth of bacteria, mold, and yeast. Also, coriander is least effective in inhibiting the growth of Aspergillus oryzae as coriander is most effective in inhibiting gramnegative bacteria.In conclusion, the result of the experiment shows the same result as the theory given. CHAPTER V CONCLUSION Spices have different antimicrobial compounds able to inhibit the growth of various types of microorganisms. Based on the expe riments, garlic, coriander, and black pepper have the most effective activity in inhibiting the growth of bacteria, or in this case Bacillus subtilis. However, coriander was proven to have no antifungal activity by the absence of inhibition zone on the Petri plates with yeast and molds, in this case Candida tropicalis and Aspergillus oryzae.In addition, potassium sorbate is effective to inhibit the growth of all types of micoorganisms in the experiment: bacteria, yeast, and molds. The Bacillus subtilis bacteria, Candida tropicalis yeast, and Aspergillus oryzae molds are most susceptible by the presence of garlic. This means that the garlic has the highest effectiveness in affecting the defense of bacteria, yeast, and molds. In contrast, the growth of bacteria, yeast, and molds is least affected by the presence of coriander.

British Literature Essay

This lesson is a continuation of the study of British literature and will focus on literature from the Neoclassical Period to today. This lesson is only an overview of some of the authors and literary works produced in England during a particular period. There are many other authors that made important contributions to the literature of this time period. The periods of British Literature are: Classical Period (1200 BC to 455 AD) Medieval Period (455 AD to 1485) Renaissance and the Commonwealth Period (1485 to 1660) Neoclassical Period (1660 to 1790) Romantic Period (1790 to 1830) Victorian Period (1832 to 1901) Edwardian Era (1901 to 1910) Modernism (1914 to 1945) Post-Modernism Period from 1945 to the present Neoclassical Period (1660-1790) The Enlightenment (also referred to as the Neoclassical Period or the Age of Reason) was based on the concept that people could find perfection and happiness through reason and knowledge. This essentially humanist vision was characterized by a resistance to religious authority. The Enlightenment began during the seventeenth and eighteenth centuries in Europe and eventually spread to America. The Restoration, the Augustan Age, and the Age of Johnson were time periods that were included in the Enlightenment. Literature from the colonial period and the beginning of the revolutionary period in American literature developed during this time. Two prominent American authors of the era were Thomas Jefferson and Thomas Paine. During the Restoration, British monarch Charles II was restored to the throne (hence the name of the era), marking the decline of the Puritan influence on British literature. Writers of the Neoclassical Period John Dryden Dryden (1631-1700) was an English poet and dramatist. Some of his famous poems include â€Å"Astrea Redux,† â€Å"Absalom and Achitophel,† and â€Å"The Hind and the Panther. † He is also known for his play All for Love. Dryden was the British poet laureate from 1670 to 1689. John Locke Locke (1631-1704) was an English philosopher who wrote the essay â€Å"Concerning Human Understanding. † He believed that the only way a person could gain knowledge was through experience. Locke’s Two Treatises on Government promoted ideas about democracy. William Wycherley Wycherley (1640-1716) was an English dramatist whose works include Love in a Wood, The Country Wife, and The Plain Dealer. Samuel Pepys Samuel Pepys (1633-1703) was a government official and writer who lived in England. His famous Diary is an important source of the lifestyles and history of the English people. Aphra Behn Behn (1640-1689) was an English novelist and dramatist and the first female to make a living from her writing. Some of her works include Oroonoko, The Forced Marriage, The Rover, and The Lucky Chance. The Augustan Age (1700-1750), named for the Roman emperor Augustus, witnessed a return to the Latin literature of the ancient Roman Empire. British writers were influenced by the works of the ancient Roman poets Horace and Virgil during this era. Writers of the Augustan Age Joseph Addison Addison (1672-1719) was an English poet, essayist, dramatist, and member of Parliament. One of his well-known literary works was the poem â€Å"The Campaign. † Sir Richard Steele Steele (1672-1729) was an essayist and dramatist from Ireland. With Joseph Addison, he founded the journals The Tattler, The Spectator, and The Guardian. He was elected to Parliament and was later knighted. Two of his plays include The Funeral and The Conscious Lovers. Jonathan Swift Swift (1667-1745) was an Irish satirist who used Juvenalian satire to criticize the society of his day in Gulliver’s Travels. Some of his other works include A Tale of a Tub and A Modest Proposal. In 1694, he was ordained in the Church of England. Alexander Pope Pope (1688-1784) was a poet and writer of satire who was famous for his use of the heroic couplet in his writings. Some of his works include The Rape of the Lock, The Temple of Fame, An Essay on Man, and Moral Essays. Daniel Defoe Defoe (1660-1731) was a journalist who wrote Robinson Crusoe. Some of his other works include The True-Born Englishman, Moll Flanders, and A Journal of the Plague Year. he Age of Johnson, named for Samuel Johnson (an important figure in English literature in the late 1700s), lasted from 1750-1790. Writers of the Age of Johnson Samuel Johnson Johnson (1709-1784) was an English author famous for his Dictionary of the English Language, The History of Rasselas, Prince of Abissinia, and The Lives of the English Poets. He is also remembered for forming a group of writers called the Literary Club. Oliver Goldsmith Goldsmith (1728-1774) was an English dramatist, essayist, poet, and novelist and was a member of the Literary Club. Goldsmith wrote the novel The Vicar of Wakefield. Other works include the poem â€Å"The Deserted Village† and the play She Stoops to Conquer. Edmund Burke Burke (1729-1797) served as a member of Parliament during the American Revolution. He supported the rights of the colonists and urged the British government to compromise with the American colonies. Some of his writings were critical of the French Revolution. Robert Burns Burns (1759-1796) was a Scottish songwriter and poet. Two of Burns’ better known songs are â€Å"Auld Lang Syne† and â€Å"Comin’ Thro’ the Rye. † James Boswell Boswell (1740-1795) was a Scottish author who wrote the biography The Life of Samuel Johnson. He was a member of Samuel Johnson’s Literary Club, and the two men traveled together. Boswell’s Journal of a Tour to the Hebrides is an account of one of their trips. Edward Gibbon Gibbon (1737-1794) was a leading historian whose most famous work was the History of the Decline and Fall of the Roman Empire. Thomas Gray Gray (1716-1771) was an English poet whose style was used by many of the Romantic writers. His most famous work was Elegy Written in a Country Churchyard. Olaudah Equiano Equiano (c. 1750 – c. 1797) was an African slave who was brought to the West Indies. He received some education and was later granted his freedom by his master. He was the first black to write an autobiography in England. He wrote The Interesting Narrative of the Life of Olaudah Equiano, or Gustavus Vassa, the African in 1789. Romantic Period (1790-1830) Romanticism is the school of thought and period of literature in which emotion, passion, and imagination are considered more important than reason and intuition more important than logic. During the Romantic Period, most writers were discontented with commercial, inhuman, and standardized conditions. Many Romantic writers portrayed people in unrealistic situations. To escape from modern life, the Romantics turned their interest to remote and faraway places, the medieval past, folklore and legends, nature, and the common people. Romantics glorified the individual and believed that people must be free from confining rules and able to develop individually. The Romantic novels described exciting adventures, unexplained events, and the evil influences of obsessions. Writers of the Romantic Period William Blake Blake (1757-1827) was an English poet, artist, and prominent figure of Romanticism. Some of his works included Songs of Innocence and Songs of Experience. Blake created the illustrations in some of his books such as The Marriage of Heaven and Hell. William Wordsworth Wordsworth (1770-1850) was a Romantic poet whose literary works focused on the beauty of nature. He teamed with Samuel Taylor Coleridge to write Lyrical Ballads, marking the beginning of the Romantic movement. Other works include The Solitary Reaper and the autobiographical poem â€Å"Prelude. † Samuel Coleridge Coleridge (1772-1834) was a poet and philosopher from England. He coauthored Lyrical Ballads with William Wordsworth. His most famous works include â€Å"The Rime of the Ancient Mariner† and â€Å"Kubla Khan. † Percy Bysshe Shelly Shelly (1792-1822) was an English poet whose many poems contained political and religious themes. His works include â€Å"Ode to the West Wind,† â€Å"The Cloud,† and â€Å"The Skylark. † John Keats Keats (1795-1821) was a poet who focused on death, love, and beauty. His works include â€Å"Ode to a Nightingale† and â€Å"On a Grecian Urn. † Sir Walter Scott Scott (1771-1832) was a Scottish novelist and poet who became a lawyer in 1792. He was credited with creating the historical novel. Scott became one of the leading literary figures of his day. Scott’s works of poetry include â€Å"The Lay of the Last Minstrel,† â€Å"Marmion,† and â€Å"The Lady of the Lake. † His novels include Waverley, The Tale of Old Mortality, The Heart of Midlothian, Ivanhoe, The Talisman, St. Ronan’s Well, A Legend of Montrose, and Quentin Durward. Jane Austen Austen (1775-1814) was an English novelist who incorporated her observations of the manners and society of her time. Through dialogue and narration, she allowed her characters to be guided by common sense and traditional values. Her more famous works include Sense and Sensibility and Pride and Prejudice. Gothic novel Gothic novels use horror and medieval elements such as castles and dungeons. Mary Shelley’s Frankenstein, and Emily Bronte’s Wuthering Heights are examples of Gothic novels. Writers of Gothic Novels Ann Radcliffe Radcliffe (1764-1823) wrote The Mysteries of Udolpho and The Italian. The setting of most of her work involved innocent young women, dark mysterious castles, and nobles with secret pasts. Horace Walpole Horace Walpole (1717-1797) wrote The Castle of Otranto, considered by some to be the first Gothic novel, as well as over 4,000 published letters. Writers in the Victorian Period (1832-1901) wrote about the living conditions of the lower class. The Victorian Period was also marked by sentimental novels. The modern drama appeared toward the end of the Victorian Age. Writers of the Victorian Period of Literature (1832-1901) Alfred Lord Tennyson Tennyson (1809-1892) served as the poet laureate of Great Britain from 1850 to 1892. Some of his works include â€Å"Ulysses† and â€Å"The Charge of the Light Brigade. † Robert Browning Browning (1812-1889) used dramatic monologue in his writings. Some of his works include â€Å"Pippa Passes,† â€Å"The Pied Piper of Hamelin,† â€Å"Bells and Pomegranates,† and â€Å"My Last Duchess. † Anne Bronte Anne Bronte (1820-1849) was the youngest of the three Bronte sisters. Her novels include Agnes Grey and The Tenant of Wildfell Hall. Oscar Wilde Wilde (1854-1900) was an Irish author who published only one novel, The Picture of Dorian Gray. Wilde wrote many comedies, including A Woman of No Importance and The Importance of Being Earnest. Thomas Carlyle Carlyle (1795-1881) was a Scottish historian and essayist who criticized the laissez faire doctrine that allowed people to do as they pleased. His works include Frederick the Great. George Bernard Shaw Shaw (1856-1950) was an Irish dramatist and novelist and a member of the socialist Fabian Society. He wrote over 50 plays including Pygmalion and won the Nobel Prize for Literature. Edward Lear Lear (1812-1888) was an English artist and author famous for his limericks and children’s poems. Lear’s first publication was A Book of Nonsense, and his most famous children’s poem was â€Å"The Owl and the Pussycat. † Charlotte Bronte Charlotte Bronte (1816 – 1855) was an English author best known for her novel Jane Eyre. With her sisters Emily and Anne, she published poetry written depicting their childhood fantasy world. The poems were published under the male pseudonyms of Currer, Ellis, and Acton Bell. Emily Bronte Emily Bronte (1818 – 1848) was one of the English Bronte sisters famous for their literary style. Her only novel was the Gothic Wuthering Heights. Charles Dickens Dickens (1812 – 1859) gained fame as a writer of The Pickwick Papers. Many of his literary works were based on his life experiences and social conditions in England. His best known works include A Tale of Two Cities and Great Expectations. Pre-Raphaelite Poets The Pre-Raphaelite poets (named for the Italian painter Raphael) of the Victorian Age wanted to return the morality of the medieval era to the modern world. Dante Rossetti Rossetti (1828-1882) was considered a leading poet and painter in England during the 1800s. His poetry contained imagery and examples of symbolism, and his paintings included romantic scenes. His literary works included Sister Helen and The House of Life. William Morris Morris (1834-1896) was an English artist, poet, and social reformer whose work reflected an interest in medieval art and Gothic architecture. His works include The Life and Death of Jason, The Earthly Paradise, A Dream of John Ball, and News from Nowhere. Realism (1860 – 1914) Realist authors described life as it really existed. Writers examined and exposed the social, economic, and political problems of society using the dialect or language of the people. Realists saw the corruption of the Gilded Age and called for reform. They rejected Romanticism, which portrayed people in unrealistic situations. Mark Twain, Bret Harte, and Henry James were writers of Realism. Transcendentalism (1800s) Transcendentalism was a religious and philosophical movement in the early to middle 1800s. Ralph Waldo Emerson (1803-1882) was the leader of the Transcendentalist movement in America. He believed that people could gain knowledge through the use of their intellect rather than from the experiences of their lives. The Transcendentalists rejected formal religious teachings. Naturalism Naturalists represented the extreme element of the Realism movement of literature. They believed that family history and environment were the main influences on the development of a person’s character and that people had no control over their fate. Political, economic, social, and heredity factors controlled the actions and fate of the people. Naturalist writers exposed the abuses and suffering of people in America. Upton Sinclair described in The Jungle, the plight of the workers in the meat packing plants in Chicago. Stephen Crane wrote about the sufferings of the soldiers during the Civil War in The Red Badge of Courage. Other Naturalist authors included Jack London, Theodore Dreiser, and Eugene O’Neill. Edwardian Period (1901-1910) This period of British Literature refers to the reign of Edward VII, the eldest son of Queen Victoria and her husband Albert. Edward was interested in the arts and founded the Royal College of Music. Writers of the Edwardian Period H. G. Wells Wells (1866-1946) was a novelist, historian, and well-known author of science fiction. His literary works include The Time Machine, The War of the Worlds, and The Shape of Things to Come. His Wealth and Happiness of Mankind addressed the social needs of people in general. Arnold Bennet Bennet (1867-1931) was an English journalist, novelist, and playwright. The film The Madness of King George was an adaptation of one of his plays. One of his most famous works was A Private Function. Rupert Brook Brook (1887-1915) was an English poet whose writings described the lives of people who suffered through the horror of World War I. One of his most famous works is The Soldier. John Masefield Masefield (1878-1967) was a novelist and poet laureate from England. His works of poetry include â€Å"The Everlasting Mercy,† â€Å"Dauber,† and â€Å"Reynard the Fox† and the novels Sard Harker and The Bird of Dawning. Modernism (1914-1945) Modernism was a literary and cultural movement that did not support the social, political, or economic values of the 1800s. Part of the reason for the movement away from the 1800s was due to the tremendous destruction and loss of life that occurred during World War I. The Modernist movement included art, philosophy, architecture, and literature in both Europe and America. Writers of the Modernism Period William B. Yeats Yeats (1865-1939) was an Irish playwright, poet, and dramatist who won the Nobel Prize for Literature in 1923. Some of his works include the poem â€Å"The Lake Isle of Innisfree† and the plays The Countess Cathleen and The Land of Heart’s Desire. Seamus Heaney Heaney (1939-) is an Irish poet whose work focuses on the politics and culture of Northern Ireland. Some of his works include The Spirit Level and Wintering Out and North. Dylan Thomas Thomas (1914-1953) was a Welsh poet who focused on the themes of religion, death, and love. His works include Portrait of the Artist as a Young Dog and Adventures in the Skin Trade. Virginia Woolf Woolf (1882-1941) was an English novelist. Her literary works focused on social and economic independence for women. Her novels include Mrs. Dalloway, The Years, and Between the Acts. Wilfred Owen Owen (1893-1918) was an English writer who wrote about World War I. His poetry focuses on the theme that war is not a glorious venture. His works include â€Å"Anthem for Doomed Youth. † T. S. Eliot Eliot (1888–1965) was an American born English poet and playwright and one of the leading writers of the Modernist period of literature. He was awarded the Nobel Prize for Literature in 1948. Some of his work includes The Hollow Men, Ash Wednesday, Four Quartets, Murder in the Cathedral, and The Cocktail Party. David Herbert Lawrence Lawrence (1885–1930) was a novelist whose literary works focused on how men and women relate to each other. His most famous work was Lady Chatterley’s Lover. His other works include The Rainbow and The Studies in Classic American Literature. Siegfried Sassoon Sassoon (1886–1967) was a British poet and author who wrote about the experiences of World War I. Sassoon’s literary works include The Old Century and Rhymed Ruminations. Aldous Huxley Huxley (1894–1963) was an English poet and novelist. His novel Brave New World criticized how science was destroying the morals of English society. His other works include Those Barren Leaves and Point Counter Point. Post-modernism Period (1945 to the present) Post-modernism includes some values and beliefs of the Modernism period. Its literature rejects traditional values of society and supports the anti-novel form. George Orwell Orwell’s (1903-1950) writings reflect his distrust of government and political and social ideologies. His works include Nineteen Eighty-Four and the modern fable Animal Farm. Joseph Conrad Conrad (1857-1924) was a prominent British novelist of the Post-modernist period. Some of his works include Lord Jim and Under Western Eyes. Conrad was a naturalized British citizen, having been born in the Ukraine. James Joyce Joyce (1882-1941) was an Irish writer who used the â€Å"stream of consciousness† technique. Some of his works include Ulysses and Finnegans Wake and the short story collection Dubliners. Katherine Mansfield Mansfield (1888-1923) was a writer from New Zealand whose pen name was Kathleen Beauchamp. Her works include The Garden Party, Bliss, and In a German Pension. Doris Lessing Lessing (1919- ) is an English novelist and author whose works focus on the role of women in politics and society. Some of her works include The Grass is Singing, Children of Violence, Under My Skin, and Walking in the Shade. Nadine Gordimer Gordimer (1923- ) is a South African novelist and short story writer. She won the Nobel Prize for Literature in 1991. Her literary works include None to Accompany Me and The House Gun. Robert Graves Graves (1895-1985) was an English poet and writer. His autobiography, Goodbye to All That, describes the horror of war. Graves’ other work include I Claudius and Claudius the God. Kingsley Amis Amis (1922–1995) was a novelist and poet from England. His literary works include Lucky Jim, The Old Devils, The Riverside Villas Murder, The Green Man, and The Folks That Live on the Hill. Anthony Powell Powell (1905–2000) was an English novelist and playwright. His plays include The Garden God and The Rest I’ll Whistle. Powell’s novels include Afternoon Men, Venusberg, From a View to a Death, and Agents and Patients. Powell’s autobiography, To Keep the Ball, was written in four volumes from 1976 to 1982. Muriel Spark Spark (1918- ) is a Scottish novelist whose literary works include The Prime of Miss Jean Brodie, A Far Cry from Kensington, and Aiding and Abetting. A. S. Byatt Byatt (1936- ) is an English novelist. Her literary works include Possession, The Shadow of the Sun, and Babel Tower. Martin Amis Amis (1949- ) is an English journalist and novelist. Some of his works include The Rachel Papers, London Fields, Night Train, and Henry Water. The information in this lesson will be a valuable resource for you in the study of different periods of literature. Remember that this lesson is only an overview of some of the authors and literary works produced in Great Britain during this time period. There are many other authors that made important contributions to the literature of this time period that were not discussed in this lesson.

Evaluation of factors determining the setting of wages for British Essay

Evaluation of factors determining the setting of wages for British expatriates - Essay Example Human resources can be termed as a critical concern to all managers. It is a crucial resource that exploits all the other resources to produce the desired result in the organization. Thus, the accurate placement of employees is a key element of any organization, which makes the firm to have a competitive edge. The application of the human resource function in multinational companies becomes controversial due to the need to formulate human resource guidelines and structures. The dissimilarity among the nations where branch is located complicates the process of hiring both local and expatriate employees (Baruch 2002, p. 239). This paper will discuss the factors that a human resource director should consider while setting wages for local and expatriate employees working in a multinational corporation. Evaluation of factors to be considered in setting the wages for British expatriate managers and engineers Many Multinational Companies desire to send their current employees to work in a d ifferent nation for a number of factors. First, the citizens in the new nation may not have the knowledge and expertise required in the job. In addition, the expatriate, being a present employee of the organization, has vast skills of the company for organizing all the company’s businesses in the new branch with the mother company (Thite 2009, p. 269). Thirdly, it helps offer the supervisors and senior management with the image needed to be a key decision maker in this global economy. As a human resource director, determining the wages to be paid to expatriates is not an easy task as it incorporates many factors to be considered (Baruch (2002, p. 240). As Caligiuri (2007, p. 294) notes, the calculation of the wages of any expatriate need a careful thought of many factors before one arrives at a wage structure that incorporates all factors. As the human resource of this British Multinational, I will distinguish between the internal and external influences of these wage determi nation strategies. The internal determinants include the rank of employee in the organization, the stage of the family development and the labour category of the employee. Regarding the first factor, I will develop expatriates wages with regard to their ranks in the organization. For instance, I would set different wages for senior managers, middle-level managers and supervisors. Secondly, I would develop a good strategy to categorise wages based on the marital status of the expatriate. I would also consider the nationality of the employee in developing different remuneration structures. The background of the expatriate will also be a significant factor in setting the wages; it would help me come up with the appropriate wage structures. I would highly insist that the young and new expatriates be remunerated like employees of the host country. The highly skilled and experienced expatriates can be remunerated with add-ons, adjustments and incentives, as well as bonuses to their wages. The characteristics of the work assigned can also be the foundation for the wage setting. On this regard, those given complex tasks should earn higher wages than those whose duties are not complex (Friedman 2009, p. 252). The social factors are also remarkable in influencing the wages to be paid to expatriates; these include the society and present discussion structures, for instance, state or industry-broad, local or company. The latter can often tremendously affect the degree of pay diversity and distinct kinds of remuneration and appraisal are satisfactory. Regarding expatriate remuneration, the origin of the company is not likely to have an impact on the wage calculation (Van Der Heijden, 2009 p. 831). Globalization makes

Reason and Faith Essay Example | Topics and Well Written Essays - 1500 words

Reason and Faith - Essay Example Faith is the opposite of reason, and it does not require any evidence for an individual to believe in a given issue or authority. On this basis, faith is a demonstration of assent or trust (Albl, 22). Faith, therefore, involves an act of commitment that emanates from the believer, in relation to a given belief. Religious faith involves the belief of an individual to a supernatural deity or God. The root cause of this faith always comes from an individual revelation of God, or the workings of God (The Bible, 3). On this note, revelation can either be direct, personally experiencing the powers of God. It can also be indirect, that is experiencing the powers of God through the testimonies of other people. Faith that emanates from religion is of two types, namely evidence insensitive faith, and evidence sensitive faith. Evidence sensitive faith is built upon by demonstrable truths, which includes testimonies brought forth by believers or people who ascribe to the same Faith. Mueller (27) denotes that this type of faith is also built on the teachings and lives of people who believed in God. On the other hand, Mueller (29) denotes that evidence-insensitive faith is built upon the individual experiences of a person with his God. All (26) explains that it is possible for a person to believe in God, through faith, or through reason. This paper takes a stand that the Bible is the main book that provides guidance on an individual’s Christian faith. The reason is only used to confirm and provide support for the various religious beliefs. Prickett and Robert (36) denote that the main factor that led to the problems associated with reason and faith comes from the concept of revelation. All religious beliefs are based on revelations. Revelations always entail an individual’s experiences with God, which in turn they are described through sacred pronunciations (Prickett and Robert, 33).  Ã‚  

Case study, the business case for happiness Study

, the business for happiness - Case Study Example Also the variation in the mood of the workers, will determine their productivity. A negative attitude influences employees’ thinking, when we feel negative we may become detractor to one another. Negative feeling bring about a combatant mode of thinking. On the other hand, a positive mood has some bearing on people way of thinking to become confident, tolerant, constructive, un-defensive and lateral. Employees are happier if they are guaranteed on the retention of their job, they will not seek a good working environment instead they will make their current working place a better one. Happiness and other positive emotions can undo some of the adverse psychological effects of the negative emotions, such as the effects of adrenaline released in the response to fear or threat. Despite all the efforts to make the employees be happy and work in harmony in the workplace, so as to increase their productivity. Still there is one major limitation to hinder all those efforts. The employees would be happy with the job but still domestic factors may lead to depression which may lead employees, not to be happy in their workplace hence leading to the low productivity. If the employees have martial issues with their spouse, it will affect their mental thinking towards their colleagues of the opposite gender. This is in the regard to the negativity in behavior of their spouses who is of the same gender their co-workers. This will eventually lead to conflicting factors in their

Discussion for online Economics class Essay Example | Topics and Well Written Essays - 250 words - 1

Discussion for online Economics class - Essay Example In this case, the value of currency in circulation surpassed the market value of American products. In addition, inflation may have occurred due to economic stimulus programs initiated by the government. The stimulus program compels people to spend, hence creating short-term inflation. The CIP index could also have increased due to external forces or forces in the international market. Increase in prices of capital goods such as oil and automobiles could have resulted from competition in the international market. China is overtaking the US as the largest global importer of crude oil and iron ore. Aggressive measures taken by china are causing an increase in prices of consumer goods around the world. These strategies make imports expensive for the US and other developed countries. As the country continues to pay more for its import’s, the price of the dollar has fallen sharply causing an increase in prices of consumer

Theories, models and techniques on Business Environment, Marketing and Assignment

Theories, models and techniques on Business Environment, Marketing and Human Resources - Assignment Example The growth of businesses in the modern market is depended on their ability to face the market’s pressures – as these pressures are reflected to the delays and the difficulties each organization faces when trying to secure its position towards its rivals. Current paper is important for the following reason: it explains the potential relationship among key organizational aspects, such as business environment, marketing and human resources. Moreover, it clarifies the terms under which the above frameworks can be developed. At this point, the reference to the theories and the techniques used for promoting organizational growth – especially in regard to the above frameworks – has been considered as necessary for highlighting the following issue: organization is a complex entity – meaning its processes but also its needs. For responding to the needs of organizations, as parts of the business environment in all markets worldwide, theorists and researchers have developed appropriate theoretical and practical models. It has been proved that the management of critical organizational factors can be based on tools and theories which have similar characteristics; however, the level at which these theories and techniques are effective is not standardized. The literature published in the specific organizational sectors, those mentioned above, has been carefully reviewed – as possible.... It has been proved that the management of critical organizational factors can be based on tools and theories which have similar characteristics; however, the level at which these theories and techniques are effective is not standardized. The literature published in the specific organizational sectors, those mentioned above, has been carefully reviewed – as possible. It has been proved that even if business operations are likely to be equally addressed – in terms of their needs – there are organizational sectors which are likely to attract more the attention of organization’s management team – for example HR needs are often set as a priority when designing the organizational plans while other aspects of the organization are not given equal attention, for example, the marketing of the firm’s products/ services. Such phenomenon is explained by the following fact: all firms are likely to be based on certain sectors/ operations. These sectors are not equal, in terms of their contribution in the development of daily organizational tasks. For instance, employees are traditionally considered as being the most important organizational asset; however, today, the role of employees within organizations has been changed – not only financially. The theories, models and techniques presented below reflect this inequality but at the same time they highlight the following problem: the monitoring on the firm’s practices is often problematic, meaning that employees are not always aware of their obligations towards the organization. The use of the theories, models and techniques suggested above could help to the increase of effectiveness of organizational plans – since the planners of the

Curriculum Alignment Essay Example | Topics and Well Written Essays - 1000 words

Curriculum Alignment - Essay Example Having established this important link of curriculum design with the people which it is aimed at, it is apt now that the question of how be answered and for this purpose the curriculum needs to be divided into several layers or several modes depending on whom it is directed towards. Instructional level learning is related to giving out a set of instructions so that they are followed and this teaches children to follow simple instructions which obviously leads to a life long journey of understanding and acting when told what to do and be able to prioritize when faced with multiple tasks, priority levels should be taught by instilling in students the importance of realizing how important time really is and what needs to be done quickly because of the importance of the task that is at hand. A good example for this type of study would be to make students indulge in activities such as treasure hunting where clear cut clues could be given to them and they should be asked to follow a set of instructions, these games or activities should be conducted regularly so as to makes students realize that it is going to be a part of the whole process and also it is very important that these activities should be entertaining for the students because to make students follow a set of instructions it is important that the students do not find it limiting to say the least. Students who fail to perform on the larger scale of a treasure hunt should be worked upon in the class room where they might be given simpler tasks with a clear cut instruction set. Developmental Levels The most challenging tasks of all is to mould a childs brain, when the word mould is used it is used in the sense that the process of development starts from a very early level and to develop a proper personality there should be courses or programs instilled in the curriculum so as to start the process of molding and hence lay seeds to a personality of tomorrow. Having laid the foundation of the importance of development programs the next question is, as always, how. The answer to this query lays in the theory that the difference between right and wrong should be taught from the very beginning because this is what brings morality into any character and moralities is the basis of character development or any other sort of development because with out morality there can be no right or wrong. The sense of what is right and what is wrong can be instilled in people this early in life by using stories where there is a clear cut line that shows what is evil and what is good and glorifies wh at is good to such an extent that it becomes a character trait of the people that undertake this program. For example a story could be told to children every day where the difference between right and wrong is clearly marked and to emphasize on this a short movie could be arranged for the children once or twice a week so that they would find it amusing and would also learn using their perceptory sensation because that would leave a deep mark in the memory and would go a long way in contributing to the development of children. Disability To cope with disability there should

Developments of Music and How the Internet Has Changed the Music Essay

Developments of Music and How the Internet Has Changed the Music Industry for Artists - Essay Example Later on in the century, other modifications had to be fixed to the mechanism to enable audio playback for the sounds captured by the device (Inglis 2006, p. 111). This was essentially in the form of a phonograph, which was pioneered by Thomas Edison. The phonograph enabled for the reproduction of the recorded music as opposed to the phonautograph that only enabled recording but no playback. An advancement of the phonograph led to the invention of the world renowned gramophone, which then set a new bar in the production of, and recording of musical pieces. Emile Berliner held the patent for the gramophone, thereby cementing her name in the music production history. It also brought the onset of disks as a medium for storing sound pieces and later on allowing for their playback through a form of rotational mechanism. However, all these advancements in the production of music still relied on mechanical mechanisms, as their periods of invention fell within the time that could not allow f or integration with electricity (Fenlon 2009, p. 243). The onset of electronic recording was in the early 20th century, and this greatly improved the recording and production of music. This was especially with the advent of the microphone, which replaced the initial mechanical means of recording sound. After the introduction of the electric forms of music recording, most of the music production processes adopted the microphone as the chief equipment for recording music (Goetschius & Tapper 2001, p. 211). This was still reliant upon discs where the electronic recording would be applied either on a single side or on both sides of the disc. Furthermore, another breakthrough in the line of music recording came with the invention of magnetic form of music recording. This was through an... This essay approves that music production has been highly modernized in respect to technological advancements. This is especially since the first forms of music production were an easy task that involved neither a lot of people nor any forms of complex instruments or mechanisms. The pioneering music production mechanisms involved quick processes that took only a couple of days and the music would have been produced. These early forms of recording, such as acoustical recording mechanisms, involved live and direct recording of the music on a medium. Through this, music was passed through some medium to finally reach the audience. This report makes a conclusion that upcoming artists need not be within recording studios as they can easily send their raw musical compositions to producers through the internet who then process it and give them feedback still through the internet. On a general outlook, the internet is used throughout the production of music in the contemporary world. All processes ranging from the recording to the advertising and distribution is web based and the process has been made even faster. The development of music from the initial phases pioneered by Thomas Edison to the era of the internet in relation to music production has highly influenced the trends in how music has developed. All the stages have been essential in music transformation, with the internet being the most revolutionary in most perspectives.

Marketing Principle Essay Example | Topics and Well Written Essays - 3000 words

Marketing Principle - Essay Example The company has established bottling partners in more than 200 countries. To ensure that all its target customers are satisfied with its brands, the company has more than 500 brands in the international market. One of the major aspects that have made the company to attain a large market segment is the increased investment in the marketing activities of its products. Coca-Cola Company market share is approximately 75%. Despite stiff competition from its competitors such as Pepsi , McDonald and Cadburys among others, the company has emerged as a leader based on the extensive use of modern as well as traditional methods of promotion and advertising. One of the major objectives of the company is to raise market share by effectively penetrating Asia Pacific and Asia markets. Secondly, the company is focused at expanding its corporate social responsibilities in order to address social problems faced by children in Africa and Latin America markets. This paper covers major strategies that Co ca-Cola adopts in its market segmentation, product positioning, and process of marketing as well marketing mix. Task 1 Marketing entails the process of communication the benefits of a product to the potential or existing customers. Being a vital way of attracting new customers, marketing takes a significant portion of company resources especially for the firms that are focused at going global. Marketing can also be defined as a management strategy of ensuring that products are moved from the concept to the final consumer. This entails the coordination of the 4Ps of marketing that included product, price, promotion and place. Marketing process entails identification of marketing opportunities and providing quality products that meet the needs of the target markets. Four major steps that are covered by marketing process are analyses of marketing opportunities, selection of target markets, development of marketing mix and management of the marketing efforts. In order to identify opport unities in the market, Coca-Cola undertakes extensive market research through the use of its marketing team. Coca-Cola Company has a number of opportunities. First, it can acquire more companies as a way of reducing competition in the soft drink industry. Secondly, the increased Hispanic population and their improved economic power will lead to high demand for its product in the local and international markets. Thirdly, due to the increasing demand for Dasani water in the world market, the company can expand its marketing activities especially in Asia, Africa and Asia pacific regions. In this way, it will capture the unexploited market thus increasing the total revenue. Coca-Cola targets all individuals regardless of their ages. Through effective market segmentation and targeting, the company is in a position to evaluate each of its segment thus providing quality brands that meet the needs of its customers. The company emulates Geographic segmentation, Demographic segmentation, Beha vioral segmentation and Psychographic segmentation. Being a third step in the marketing process, developing an appropriate marketing mix is an aspect that Coca-Cola Company has not overlooked. For instance, the company has established wide range of quality brands such as Coke, Fanta, Sprite and Minute Maid among others. The company prices are affordable thus ensuring that its customers are in a position to purchase their favorite brands. In terms of place, the company has

Frankenstein and Blade Runner Essay Example for Free

Frankenstein and Blade Runner Essay The texts, Frankenstein and Blade Runner reflect changing contextual values; however the treatment of content remains the same. Mary Shelley’s didactic Frankenstein published in 1818 centres on scientific advancement of the Industrial Revolution, as presented through a consolidation of Gothic and Romantic elements in response to the shifting paradigms of the Enlightenment Age. Similarly, Blade Runner directed by Ridley Scott in 1982, transforms the notions of Frankenstein to position its postmodern audience to consider the negative ramifications of the Cold War and the rise of capitalism. These contextual ideas will be explored through the thematic concerns pertaining specifically to the destructive potential of abusing scientific power, the flawed responsibility of man as creator and the nature of humanity. Indeed, Blade Runner is a realisation of the sublime warnings highlighted by Shelley’s Frankenstein in 1818. Destructive potential of abusing scientific power Frankenstein highlights the destructive potential of abusing science through overpowering human morality and provoking irresponsibility. The 18th Century Age of Enlightenment was a social movement where logic and reason was advocated as the primary source of authority, characterised by scientific advancements such as Galvani’s concept of electricity as a reanimating force and theorists such as Erasmus Darwin. Hence, Walton’s metaphor, influenced by Age of Enlightenment, â€Å"What may not be expected in a country of eternal light? † is mantric for both Walton and Frankenstein who display a â€Å"thirst for knowledge† in their respective scientific quests. The metaphor and symbol of â€Å"eternal light† represents the mysteries the pair wish to uncover and accompanied with rhetorical question it reflects the optimism of society embracing the Age of Enlightenment. However, the irrevocable consequences of abusing scientific power is highlighted when Frankenstein says, â€Å"â€Å"All my speculations and hopes are as nothing, and like the archangel who aspired to omnipotence, I am chained to an eternal hell. † as he is tormented by the â€Å"filthy daemon† he creates; a monster â€Å"even Dante could not have conceived. The allusions to John Milton’s Paradise Lost and Dante Alighieri’s Inferno through metaphor and simile emphasises the destructive potential of abusing scientific power as Frankenstein’s environment decays into hell. This caution of the destructive potential of abusing science is realised in Blade Runner through Scott’s mise-en-scene of the dystopian urban wasteland of 2019 Los Angeles, emphasising the destruction of the natural environment as a result of the Cold War’s nuclear threat and rise of consumerism. In the opening sequence, the slow-panning panorama shot, under chiaroscuro lighting, captures a hellish megalopolis with huge smokestacks spewing fire into the atmosphere and large pagan corporate edifices towering over the city. This disorienting imagery is coalesced with violent, non-diegetic sounds and visuals of constant rain, symbolizing concerns of acidic rain and the burning of the environment. Hence, Scott’s utilization of futuristic â€Å"film noir† cinematography establishes a grim, claustrophobic environment that is completely devoid of the natural world. By depicting such dystopia and understanding contextual concerns such as the capitalist deregulation and the ‘trickle down’ theory of Reagan’s era, Scott applies Shelley’s â€Å"Promethean† motif to caution viewers about the potential environmental dangers of abusing modern technology and nuclear warfare, which were widespread social concerns at the time due to the climax of the Cold War. Flawed responsibility of men as creator Frankenstein highlights how unrestrained science undermines man’s responsibility as creator. Shelley’s era was a time of religious revival where philosophers such as Kierkegaard asserted spirituality was more than â€Å"objective appearance† and demanded engagement. In both texts, several biblical allusions are made to the image of man usurping the title of â€Å"creator† and creation becoming the forsaken â€Å"fallen angel. † Hence Victor’s Godly damnation reflects man as illegitimate to play the role of God: â€Å"Wretched devil! You reproach me with your creation; come on, then, may I extinguish the spark which I so negligently bestowed. Through the emotive biblical language and poetic allusion to â€Å"Milton’s Paradise Lost†, Shelley evokes the retelling of Satan’s fall from grace, where the monster’s likeness to the â€Å"fallen angel,† exacerbates the notion that man, corrupted by the moral insensitivity of science, is flawed as creator. Moreover, the â€Å"spark† alludes to the â€Å"eternal light† which irresponsibly leads to the immoral creation of a monster that is both extravagant and aberrant. This is illustrated by the graphic imagery of the monster’s impurity such as â€Å"skin arely covered† and â€Å"yellow eye† alongside the creature’s painful personal recollections through direct use of the first person, â€Å"I was a poor, helpless, miserable wretch. I knew, and could distinguish, nothing; but feeling pain invade me on all sides. † Hence, Shelley highlights to readers in the Enlightenment period that innate selfishness of men corrupts the moral grounding of scientific pursuit rendering man as illegitimate to play the role of God. The issue of mankind as selfish creators, disengaged from institutionalized structures such as Christendom, is extended in Blade Runner in the â€Å"meeting of the maker’ scene. Tyrell ruthlessly exploits his economic power by separating himself from the decaying dystopia of Los Angeles. Tyrell’s fundamentally flawed intentions are personified in the Tyrell Corporation’s edifice of a Grandiose, Mayan style pyramid physically exerting a powerful dominance over the city. It is presented through an upward panning low angle shot, spliced with close up shots to reinforce the dominance of consumerist progress in dystopia. The pyramid’s historical association with Egyptian royalty links them with the divine, typifying Tyrell’s ‘God-like’ role as creator. This is reinforced in Tyrell’s costuming of white clothing amidst long shots of a candle-lit church atmosphere, typifying his glorified religious status. Moreover the low-angle shots of the ‘artificial owl’ with dark shadows emphasises the extent to which the natural environment has been artificially remodeled due to the rise of consumerism in the 1980s. Hence, the dehumanised portray of Victor Frankenstein and Tyrell demonstrates that despite differering contexts, science leads to an abandonment of moral responsibility and man is flawed as creator. What constitutes humanity in an individual Frankenstein highlights the true nature of humanity as influenced by the 18th Century Romantic Movement. The 18th Century Romantic Movement was a social reaction against the 18th Century Age of Enlightenment, characterised by stressing the beauty of the natural world and emotional feeling. The natural world’s splendour is highlighted as Frankenstein flees to Mont Blanc for conciliatory peace away from his torment. â€Å"The unstained snowy mountain-top, the glittering pinnacle †¦ the eagle soaring amidst the clouds. † The Romantic and emotive language, imagery and allusion to Edmund Burke’s On the Sublime and the Beautiful portrays the beauty of the natural world, free from destructive science. Further humanity’s emotions are romanticised through the benevolent portrayal of the Monster. â€Å"No father had watched my infant days; no mother had blessed me with smiles and caresses†¦ What was I? † Through the combination of emotive language, a personal tone created through the personal pronoun â€Å"I† and a rhetorical question to question what constitutes humanity within a being, Shelley transcends the Gothic stereotype typically bestowed upon a monster to emphasise the monster’s human longings for parental love and companionship. Hence, as the Romantic Movement and its fascination with the sublimity of nature, was being overcome by the strict rationality of the Age of Enlightenment, Shelley foreworns of the destruction of the magnificence of humanity, both in the natural world and in human emotions, as a result of rampant science and irresponsibility. Similarly, the â€Å"more human than human† portrayal of Roy in Blade Runner also highlights our mistreatment of scientific creations as artificial commodities, blurring the distinction between humans and products of artificial intelligence. In the final scene, Scott uses a close-up shot at Roy’s nailed hands, literally portraying him as a Christ-like figure, as he is enslaved and morally detached from humanity from the goals of â€Å"commerce†. The condescending aphorism in Tyrell’s comment at Roy’s desperate cry for life, â€Å"the light that burns half as long, burns twice as bright† alludes to the â€Å"eternal light† in Frankenstein’s Age of Reason and its effects on humanity’s disregard for the human consequences of its actions. Hence Roy asserts â€Å"I’ve seen things you people wouldn’t believe†, which reflects about his personal, human pain and suffering as a result of the commoditised world. Furthermore, a close up of Roy, alongside the pure white background creates a cathartic moment as Roy becomes ‘the fallen angel’, magnanimously giving life to Deckard and instilling human qualities within him. It is through illustrating Roy’s sensitivity that Scott ‘appropriates’ Shelley’s dilemma of what constitutes humanity within any being, questioning the morality of the technology-dependent audience of the 1980s; as they take scientific creations for granted. Hence after suffering and succumbing to brutal dehumanisation, both Replicant and Beast have emotively evoked pathos and senses of profound solemnity. Ultimately, both Frankenstein and Blade Runner are products of their cultural milieu and forewarn us of the destructive potential of abusing science, illegitimately playing the role of God and the values of humanity that degrade our morality and responsibility. More subliminally, however, each text embodies the moral limitations of being human through the oppressive nature of scientific and technological advancement.

Earls Top 5 Filipino Traits Essay Example for Free

Earls Top 5 Filipino Traits Essay 1. Adept Filipinos are very flexible at surging any difficulty and hardship 2. Craftsmanship Filipinos are very crafty 3. Obsessive Filipinos wish to improve their lives and those around them and are willing to go through great hardships and efforts, but dont always know when to stop or how to balance it all. 4. Mimicry Filipinos tend to copy or gain that which others have. In this respect, thats why you see groups of Filipinos in foreign countries that are so similar (like in LA every Filipino seems to have a piano at home that no one buys, or in Japan every Filipino on a military base seems to own rose wood. But if they move to a new group, then they easily wish to change and copy the new styles. Kind of like following a fad. 5. Short memories No I dont mean their dumb or something, I mean they forget the past or let go of the past easier. They dont hold grudges quite so bad. Filipinos are not more family oriented than in other cultures, but what makes them Filipinos is they think they are. No offense. But many people have strong relations with their families. I lived in a home for six months and had to listen to my Brother in law tell me how family oriented they are as he yells at his father, and puts down his dead mother. I watched as just about every male member of the family had girlfriends, and the wives knew and ran those girls out of town when they got pregnant. I watched families that lived across the street visit each other once a year. I had a Filipino tell me that my daughter (half Filipino isnt Filipino enough to live in his house with my 2nd wife for a short time). So in any respect, Im not say they are less family oriented, but that we all have our issues with getting along, and Filipinos are no more family oriented than other cultures. This is according to the yahoo answers dot com. Well I agree with these because most of the Filipinos come from poor families and they can survive any trials becsuse they are already used to it. They are already down, so they on;y way to go is up. In the Philippines the most common thing that is talked about is the government. This is because this is the largest contributor of the poverty in the Philippines.

Secondary Air Damper Control in Boiler

Secondary Air Damper Control in Boiler In this proposed work, design and development of controlling Secondary air dampers in a draft system of a power plant which is presently working on DCS technique has been accomplished by using high computing software ARDUINO and results has been shown with suitable simulation in VISUAL BASICS. The goal of this work is to control the air dampers in a different way according to the unit load thereby increasing the boiler efficiency and to reduce the pollution. A set of six interlock conditions were provided for this purpose. Since DCS is applicable only for big system not less than 5000 input and output but this is costly. It consists of separate server, processor and computers where as ARDUINO does not require a separate processor, no workstation, no operator station here directly connect interfacing card with computer itself. Keywords- Secondary air dampers, Draft system, ARDUINO, Power plant (TTPS), Software control. I. INTRODUCTION In power plant boilers, the draft is obtained by means of fans namely Forced draft and Induced draft fan. The FD and ID fans develop enough draft to move the tremendous volume of air and gases through the flue gas ducts and stack to atmosphere maintaining a balanced draft in the furnace. The secondary air for combustion primarily enters into the windbox. The wind box assembly is a tall structure divided in its height into thirteen compartments which houses 6 no. of Coal nozzles and 5 auxiliary air nozzles alternatively at different elevations from top to bottom. Louvre dampers named as secondary air dampers each of which is operated by an individual damper drive cylinder located at the side of the wind box. The coal nozzle elevations are designated as A,B,C,D,E,F elevation from bottom to top, the bottom end air and top end air elevations as AA and FF respectively. The auxiliary air nozzles in between coal elevations are designated as elevations AB,BC,CD,DE,EF. The furnace corners are designated as corner 1, 2, 3 and 4 in clockwise direction. The heat released in the furnace is received by the Water/steam/air to the maximum extent to have boiler efficiency of the order of 86%. II. OPERATIONAL PROCEDURE OF SECONDARY AIR The operation of the auxiliary and fuel air dampers in the windbox assemblies are affected by the FSSS. A. Auxiliary air dampers: During the furnace purge period and initial operations up to 30% boiler loading all elevations of auxiliary and end air dampers modulate to maintain a predetermined (approx. 40 mmWC) set point differential pressure between windbox to furnace. 30 to 40% of total air flow to have an air rich furnace will be supplied during the above period to avoid unhealthy furnace conditions. When the unit load exceeds 30% MCR, the differential pressure set point is changed and ramps to a higher setting (approx. 100 mmWC). Simultaneously, the auxillary air dampers associated with coal or oil elevations not in service close in timed sequence starting with the upper elevation of dampers and progressing to the lowest elevation. When the unit loading is reduced below 30% loading, the auxillary air dampers open in a timed sequence starting with the lowest elevation of dampers. Simultaneously, the differential set point changes to its lowest setting. All the auxillary air dampers maintain the status quotient upon a boiler trip and will open fully when both the FD fans are off. The bottom end air damper is normally kept open to a fixed predetermined position to reduce unburnt coal dust fall out. B. Fuel (oil) air dampers: Elevation AB, CD and EF dampers modulate according to the oil header pressure when heavy oil is being fired. Otherwise they open and close with the rest of the aux air dampers. Elevation AB dampers are kept at a fixed opening when light oil is being fired. C. Fuel (coal) air dampers: Their operations are independent of Boiler load. All coal air dampers are normally closed. They open fifty seconds after the associated feeder is started, and modulate as a function of feeder speed. Fifty seconds after the coal feeders are removed from service, the associated fuel air dampers close. The fuel (coal) air dampers open fully, when both FD fans are off or when the boiler trips on master fuel trip. Importance of secondary air: Protect Boiler Equipments Control the Pollution Improve the Efficiency of the Boiler III.METHODOLOGY This project is to automatically control the air inlets that are termed as dampers which are operated using pneumatic valves. The pneumatic valves are controlled by sensors depending on the windbox to furnace differential pressure. Thus this project controls dampers based on arduino coding And its visually displayed in visual basics. This forms the basic methodology for this project. A. Hardware Description: The hardware components consist of 4potentiometers of range 10kà ¢Ã¢â‚¬Å¾Ã‚ ¦. These are assumed to be the coal mills/diesel input i.e. inputs for coal. Secondary air dampers are present near all coal and diesel elevations. The percentage opening of a damper depends on the amount of coal/diesel input. Therefore variation of potentiometers indicate amount of coal/diesel input. The damper opening depends on the variable point of the potentiometers. 4 potentiometers are so connected for explanation and they are connected to the A/D convertor pins of AT MEGA 8.0 controller. Then the freeduino board in which the AT MEGA 8.0 is fixed is connected to PC and arduino coding is uploaded in the controller. Then VB shows graphical representation of percentage of damper opening and all other factors. B. Software Description: The software coding was developed based on several conditions on which the secondary air damper openings depend. These form the base for developing a program. These conditions are based on some fixed values and formulas. As already mentioned the percentages of secondary air damper opening depend on the amount of fuel input to the furnace. The algorithm for visual basics coding are as below. 1) Operation Of Coal Elevation Dampers: (A, B, C, D, E, F) The coal dampers at elevations A, B, C, D, E and F will be fed with coal depending on the load of the power plant. Feeding (30 tonnes per hour) any three of these coal elevations is sufficient enough to supply the predetermined full load (210 MW) of the unit. All dampers always have a minimum opening of 30%. In general,less than 20% of the secondary air to the fireball will maintain substoichiometric combustion which limits the flame temperature of the fireball and provides the curtain of secondary air over the walls. The curtain of secondary air militates against the formation of slag on the furnace walls. All this proportioning of the air requires tools of adjustment available to the furnace operator. The dampers modulate according to coal input in three different ways as: When coal is fed into a particular(own) elevation ,the corresponding air damper starts modulating based on the fuel input to let the secondary air required for the combustion of given input. Rather when coal is fed into an (auxillary) elevation adjacent to a particular damper, the damper modulates to maintain the windbox to furnace differential pressure, thereby controlling the constant negative pressure essential to create swirling fireballs of combustion in tangentially fired boilers. When the condition of tripping the whole unit arises, all the six coal elevation dampers are opened to100 % (maximum). When there is no fuel input in any of the above elevations then the dampers will be in minimum opening position. (0%) 2) Operation of oil elevation dampers (AB, BC, CD, DE, EF): Oil is used as fuel input during startup and during scarcity of coal. Each pair of coal nozzle elevations is served by one elevation of oil burners (4 nos. /elevation) located in the auxiliary air nozzle. Thus 12 oil guns, non retractable type, are accommodated in the three elevations AB, CD and EF. Heavy fuel oil can be fired at the oil guns of all these three elevations, whereas light fuel oil (High speed diesel oil) can also be fired at AB elevation. Each oil gun is associated with a retractable high energy arc (HEA) igniter, arranged at the side of the oil gun in the auxiliary air compartment and they directly light up the oil guns. The dampers modulate according to oil input in three different ways as: When oil is fed into a particular(own) elevation ,the corresponding air damper starts modulating based on the fuel input to let the secondary air required for the combustion of given input. When steam input is higher than 30% with adjacent elevation opened then windbox to furnace differential pressure is maintained. Rather when oil is fed into an (auxillary) elevation adjacent to a particular damper, the damper modulates to maintain the windbox to furnace differential pressure, thereby controlling the constant negative pressure essential to create swirling fireballs of combustion in tangentially fired boilers. When the condition of tripping the whole unit arises, all the oil elevation dampers are opened to 100 % (maximum). When there is no fuel input in any of the above elevations then the dampers will be in minimum opening position. (0%) 3) Operation of AA, FF elevation dampers: The AA elevation of air damper is always fully (100%) opened and the FF elevation is always closed to enhance combustion. Thus the coding for the project is developed based on  the conditions of the coal and oil inputs. IV. SEQUENCE OF OPERATION The opening of dampers depends on the load and coal input. The above table I illustrate the percentage of coal input in each mill for given percentage of load. Here 30 Tonnes/Hr of coal is the 100% input and 10 Kg/cm2 of oil is the 100% input of oil. When unit load is 50%, then coal mills A, B are in full operation and C mill operates 10% with AB elevation having oil. For a load of 60%, coal mills A, B, C will operate till 30% and mill D has 10% input. AB oil elevation is fed with full percentage of oil. If the load is 70%, then there is no need for oil but coal mills A, B, C, and D are fed with maximum input. For 90% ,there is no need for oil but the coal mills A, B, C, D is fed with maximum input and E with 20% of fuel input. For 100% load, all the coal elevations are fed with maximum input. V. SIMULATION RESULTS Visual Basic is a third-generation event-driven programming language and integrated development environment (IDE) from Microsoft for its COM programming model first released in 1991. Visual Basic was derived from BASIC and enables the rapid application development (RAD) of graphical user interface (GUI) applications, access to databases using Data Access Objects, Remote Data Objects, or ActiveX Data Objects, and creation of ActiveX controls and objects. VBA is effectively the same language as Visual Basic but VBA-code is tied to Microsoft Office and can only run within that environment. A programmer can put together an application using the components provided with Visual Basic itself. The four fuel inputs are received via the potentiometer to the AT MEGA 8 microcontroller. The variation of potentiometers indicate amount of coal/diesel input. The damper opening depends on the variable point of the potentiometers. The controller board is connected to PC and arduino coding is uploaded in the controller. Then VB is used for graphical representation of damper opening. The simulation results showing the air dampers status variation according to the various input set points is as follows: The amount of coal input given is shown in the above fig 5. This show the percentage of input given, timer, coal mill that is active, amount of load, steam input set point and steam input in percentage. This form shows all the elevation of dampers and denotes the damper that is open and the percentage of damper opening is also shown. In addition to that reactive power produced for corresponding load is also calculated. VI CONCLUSION Based on the graphical programming language and the data stream operating mode, the software instead of apparatus, the use of virtual instrument technology has opened up our new field of control. Compared to the traditional control it has obvious advantages. Programming is simple by the graphical programming language. A form of visual basics personalizes button design and layout, with the virtual knobs and switches to struck the friendly human, intuitive control interface makes vivid, so that the operators are involved in the operation easier to control the process and results at a glance. The main advantage of controlling secondary air dampers by using arduino is lesser cost as compared to DCS technique, since the interfacing of inputs and outputs are directly given to the PC (which works as work station i.e. block panel and operator station i.e. front panel) .This paper was made in a Coal Based Thermal power plant at tuticorin, TTPS as the existing is running on DCS system. VII ABBREVIATIONS: DCS Distributed Control System FSSS Furnace Safeguard Supervision System FD fan Forced Draft Fan ID fan Induced Draft Fan ADC Analog to Digital converter PC Personal Computer VB Visual Basic 6.0 Draft difference of pressure causing flow of air Elevation -position of dampers Windbox -secondary air storage compartment between FD fan and furnace.