biochemical tests utilized were; Triple Sugar Iron Agar (TSIA) test‚ Sulfur Indole Motility (SIM) test‚ Methyl red test and Voges-Proskauer (MR-VP) test‚ Citrate test‚ Urea test‚
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American Journal of Epidemiology Copyright © 2003 by the Johns Hopkins Bloomberg School of Public Health All rights reserved Vol. 157‚ No. 9 Printed in U.S.A. DOI: 10.1093/aje/kwg040 Use of Agricultural Pesticides and Prostate Cancer Risk in the Agricultural Health Study Cohort Michael C. R. Alavanja1‚ Claudine Samanic1‚ Mustafa Dosemeci1‚ Jay Lubin1‚ Robert Tarone1‚ Charles F. Lynch2‚ Charles Knott3‚ Kent Thomas4‚ Jane A. Hoppin5‚ Joseph Barker6‚ Joseph Coble1‚ Dale P. Sandler5‚ and Aaron Blair1
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compounds in n-hexane extract namely Hexadecane(1)‚ 2-[4a‚ 8-Dimethyl-3‚4‚4a‚5‚6-hexahydro-napthalene-2-yl]-prop-2-en-1-ol(2)‚ Heptadecane(3)‚ Benzene‚ [1-butylheptyl]-(4)‚ Benzene‚ [1-methyldecyl]-(5)‚ Oxirane‚ tetradecyl-(6)‚ Hexadecanoic acid‚ methyl ester(7)‚ Hexadecanoic acid‚ ethyl ester(8)‚ 9‚12‚15- Octadecatrienoic acid‚ ethyl ester‚ [Z‚Z‚Z]-(9)‚ Lupeol (11) . The ethanolic extract of the aerial parts showed the most promising activity among selected four solvents against clinically isolated
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following are chemical tests that we will use in this class. Some cover two related functional groups (such as the bromine test for alkenes and alkynes)‚ while other only a specific subcategory of that functional group (such as the iodoform test for methyl ketones). In some cases there can be false positives (compounds which do not have the functional group still give a result test) or false negatives (compounds which have the functional group give a negative result). If your results do not match
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Experiment #6: Colorimetric Determination of pH Almira‚ Faerie Carleen Lucile L. Gallardo‚ Charlotte O. Group #6‚ Chemistry 18.1‚ MHEG1‚ Ma’am Arlou Angeles September 23‚ 2013 I. Abstract The acidity of the four unknown solutions were determined with the use of colorimetry using McIlvaine’s buffer solutions varying in proportion of its constituents (disodium phosphate and citric acid). These buffer solutions were subjected to the addition of corresponding pH indicators and the variation of
Free PH PH indicator Acid dissociation constant
get citral because its distillation occurs below the boiling point of water. Adding t-butyl methyl ether to the distillate and shaking creates a distinct layer separation which when dried leaves purified citral. Materials and Equipment: Spatula‚ syringe‚ syringe needle‚ short-neck round bottom flask‚ digital thermometer‚ pipette‚ pipette bulb‚ ice‚ lemongrass oil‚ beaker‚ electric hot plate‚ t-butyl methyl ether‚ saturated sodium chloride‚ anhydrous calcium chloride‚ stopper‚ boiling chips‚ sand
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Analysis of Soda Ash and Volumetric Analysis of a Carbonate-Bicarbonate Mixture Buti‚ Mary Daphne A. Department of Chemical Engineering‚ Faculty of Engineering University of Santo Tomas España‚ Manila Abstract Sodium carbonate (Na2CO3)‚ commonly known by trade name soda ash‚ is a white‚ anhydrous‚ powdered or granular material that is an essential raw material used in the manufacturing of glass‚ detergents‚ chemicals‚ and other industrial products. In this experiment‚ the percent alkalinity
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Aim : To prepare an ester using reflux Hypothesis : The equation was written out for the reaction and pentyl ethanoate was predicted as being the ester that would be formed. Equipment * 10 ml pentanol | * condenser | * 10 ml glacial acetic acid | * Heating Mantel | * 1 ml conc. Sulfuric acid | * Funnel | * 50 ml flask | * 15ml 1molL-1 Na2CO3 | * Boiling chips | * Seperating Funnel | * Retort Stand | * Safety Glasses | Method 1. 10 ml of Pentanol
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potentially hazardous technology to the developing countries. Even after 20 years‚ Bhopal has not recovered. In this article‚ we present what happened and why and what lessons can be learned at this terrible cost. Keywords: hazards; green revolution; methyl isocyanate; multinationals; pesticides; poisonous gas; safety failures; Union
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Reminder: These notes are meant to supplement‚ not replace the laboratory manual. SN1 Reaction Notes Background and Application Substitution Nucleophilic First Order (SN1) reactions are one of the most common type of organic reactions. SN1 reactions can be used to make a wide variety of new compounds. In this experiment‚ t-amyl alcohol will be converted by a SN1 mechanism to 2-chloro-2-methylbutane. Safety Precautions Concentrated Hydrochloric Acid is 12M. It will cause visible destruction
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