However they can also be recognised based upon the effect they produce as stimulants‚ hallucinogens and depressants. Stimulants are drugs that increase the activity of the central nervous system and increase brain activity. Examples include alkyl nitrites‚ amphetamines‚ cocaine and crack‚ ecstasy‚‚ ‚ anabolic steroids and nicotine. Some of these give the feelings of greater confidence‚ energy and alertness. Depressants are drugs that reduce the activity of the central nervous system and slow down
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CHAPTER I INTRODUCTION: An aqua silencer is used to control the noise and emission in ic engines. The reason why we go for aqua silencer is‚ in today life the air pollution causes physical ill effects to the human beings and also the environment. The main contribution of the air pollution is automobiles releasing the gases like carbon dioxide‚ unburned hydrocarbons etc. In order to avoid this type of gases by introducing this aqua silencer. It is fitted to the exhaust pipe of the engine
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Analysis of Hydrocarbons Leoncito‚ Alyssa Lynn‚ Libatique‚ Keith Martin P.‚ Ligot‚ Nestlhyn B.*‚ Lim‚ Jamie Therese T. Department of Psychology‚ University of Santo Tomas‚ Manila‚ Philippines Abstract Four organic samples: hexane‚ cyclohexene‚ napthalene and toulene were given to serve as reference standards to characterize and distinguish four unknown given samples. Nitration‚ bromine and basic oxidation testswere conducted to classify the different samples from being an aliphatic‚ or aromatic
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Experiment IV Solubility of Dissolved Oxygen Purpose To demonstrate the effect of partial pressure‚ temperature and salinity on the solubility of dissolved oxygen and to demonstrate the interference of nitrite in dissolved oxygen analysis by the Winkler Method. To demonstrate the use of the oxygen electrode and the difference between activity and concentration. References 1. Mancy‚ K. H.‚ Jaffe‚ T.‚ "Analysis of Dissolved Oxygen in Natural and Waste Water‚" USDHEW Public Health Service
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Introduction A countries culture is displayed through the attitude of its people‚ dress‚ music‚ art and food. As Bahamians food plays an important and unique part in our social interactions and defining us as Bahamian. In fact‚ a popular Bahamian song insists that while visiting the Bahamas you must “try some conch‚ peas ‘n’ rice and guava duff” which are all delicious native delicacies. Even though it is great that we embrace and love this aspect of our culture this attitude has a negative effect
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Celiac disease‚ more commonly known as gluten intolerance‚ affects one in 133 Americans. This lifelong disease causes intestinal problems when eating gluten‚ which is the common name for offending proteins in wheat (including durum‚ semolina‚ spelt‚ kamut‚ einkorn‚ and faro)‚ rye‚ barley and oats. Gluten is like poison to people with celiac disease. Terms to beware of: Durum flour‚ couscous‚ semolina‚ spelt‚ kamut‚ bulgur and triticale‚ a grain crossbred from wheat and rye‚ are all names
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CH 222 ANALYTICAL CHEMISTRY I SYLLABUS COURSE OUTLINE: a. Introduction (1.5 hours) Classification of types of analysis‚ role and importance of analytical chemistry in various aspects of life. b. Steps in a typical quantitative analysis (10 hours) Emphasis on sampling protocol‚ sample preparation‚ wet chemistry methods‚ statistical evaluation of data. c. Review of concepts of stoichiometry (2 hours) Mole concept‚ concentrations‚ dilution and aliquots d. Review of concepts of equilibria
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Materials and methods 1. Raw materials Full ripe cactus Opuntia dillenii fruits were harvested from the orchard of Faculty of Agriculture‚ Suez Canal University‚ Ismailia Governorate‚ Egypt during December 2014. Fruits were washed and glochides and the two distal parts (top and bottom parts) were removed. The fruits were mashed in a mixer by mixing for 15 s. After that‚ the seeds were separated‚ washed and dried by hot air in a convective dryer (WT-binder‚ Type F115‚ Germany) at 50 ºC‚ air velocity
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1.History of ecology .Ecology as a science. Sub-disciplines of ecology. Economics and Ecology. Ecology appeared as a distinct field of science in the second part of the nineteenth century from a diversity of different areas‚ such as geography‚ plant physiology‚ taxonomy‚ and the theory of evolution. In 1893 two significant events happened. First‚ the book “Flower Ecology” by L.H. Pammel‚ was published. Secondly‚ the Madison Botanical Congress adopted the term "ecology" as denoting a new branch of
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www.kalvisolai.com 5 Mark Compulsory Problems with Solution 1 +2 CHEMISTRY Q. 70 Compulsory Problems with Solution Problems are solved in easiest way (As per Government Answer Key) www.kalvisolai.com 5 Mark Compulsory Problems with Solution 2 SALIENT FEATURES Dear Students ❆ Q.No: 70 is asked as compulsory problem in Govt Exam. ❆ Two problems to be answered out of four problems. ❆ To simplify the problem‚ hints and expected compounds related to molecular formula‚ general formula are
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