and pyrimidine bases project inwards at 900 to the axis of the helix. 3. The two strands are held together by hydrogen bonding between pairs of bases such that guanine always pairs with cytosine and adenine always pairs with thymine; this is called complementary base pairing 3. The diameter of the helix is 2.0 nm and adjacent bases are separated by 0.34 nm and inclined at 360 relative to each other. This means that each complete turn of the double helix contains about 10 base pairs. 4. The
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Partitioning of organic acid food preservatives between oil and water Olaya Iturbe Navalpotro Student of Food National Institute -DTU Technical University of Denmark Index 1. Introduction …………………………………………………………..pg. 2-4 2. Theoretical background……………………………………………….pg. 5-18 2.1. Preservatives (Sorbic acid and Benzoic acid) 2.2. Solubility and partitioning of food preservatives in food system 2.3. Measurements of the preservatives partitioning in oil-water system 2.4. Influences of
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Impact of a Water Jet 2.2 Flow Through a Venturi Meter 3.Experimental procedures and results 3.1 Experimental procedure – Impact of a Water Jet 3.2 Experimental procedure – Flow through a Venturi Meter 3.3 Results– Impact of a Water Jet 3.4 Results– Flow through a Venturi meter 4.Discussion 4.1 Impact of a water jet 4.2 Venturi meter 5.Conclusion 6.References Appendices Abstract Rate of flow was measured in two different experiments‚ Impact of a water jet and flow
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A carboxylic acid is an organic acid characterized by the presence of at least one carboxyl group. The general formula of a carboxylic acid is R-COOH‚ where R is some monovalent functional group. A carboxyl group (or carboxy) is a functional group consisting of a carbonyl (RR’C=O) and a hydroxyl (R-O-H)‚ which has the formula -C(=O)OH‚ usually written as -COOH or -CO2H. Carboxylic acids are Brønsted-Lowry acids because they are proton (H+) donors. They are the most common type of organic acid. Among
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Explain the concept of homeostasis. P6: Follow guidelines to interpret collected data for heart rate‚ breathing rate and temperature before and after a standard period of exercise. M2: Discuss the probably homeostatic responses to changes in the internal environment during exercise. M3: Present Date collected before and after a standard period of exercise. D2: Evaluate the importance of homeostasis in maintaining the healthy functioning of the body. P5 Homeostasis is a natural response
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Negative feedback Essay Homeostasis of Animals and Plants Many animals‚ including humans‚ can regulate their body temperature through a process called negative feedback. The temperature within the body is regulated to be maintained within a certain range. Animals capable of this type of homeostasis are deemed homeotherms (1). Temperature is adjusted by receptors that detect temperature fluctuations called thermoreceptors‚ which are found in the hypothalamus-a portion of the brain. These receptors
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FOOD GROUPS 5 CARBOHYDRATES 5 MAIN SOURCES 5 FUNCTIONS 5 ENERGY SUPPLY 5 PROTEINS 6 MAIN SOURCES 6 DIETARY IMPORTANCE (FUNCTIONS) 6 ENERGY SUPPLY 6 LIPIDS 7 PRINCIPAL SOURCES 7 DIETARY IMPORTANCE (FUNCTIONS) 7 ENERGY SUPPLY 7 VITAMINS 8 MINERALS 9 WATER 10 FUNCTIONS 10 DIETARY FIBER /ROUGHAGE 11 FUNCTIONS 11 PROBLEMS OF AN UNBALANCED DIET 12 MALNUTRITION 12 EFFECTS OF MALNUTRITION 12 CONSTIPATION 13 HEART DISEASE 13 OBESITY 14 STARVATION 15 Poverty 15 Over population 15 Drought 15 RESEARCH WORK 16
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Liquid fuels such as gasoline‚ diesel‚ fuel oil light‚ fuel oil heavy or kerosene have to be atomized and well mixed with the combustion air before burned. Therefor nozzles are used. Nozzles are divided into two groups: Pressure atomizers and twin-fluid atomizers. 5.1.1 Pressure atomizers Pressure atomizers are differed into turbulence nozzles and liquid sheet nozzles. At both types of nozzles the energy from the liquid pressure is converted into kinetic energy and a small part of it into forming
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Fluid Catalytic Cracking Fluid catalytic cracking* (FCC) is the most important conversion process used in petroleum refineries. It is widely used to convert the high-boiling hydrocarbonfractions of petroleum crude oils into more valuable [1][2][3] gasoline‚ olefinic gases and other products. . Cracking of petroleum hydrocarbons for conversion of heavy fractions into lighter fractions was originally done by thermal cracking which has been almost completely replaced by catalytic cracking because
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Catalyst Manufacturing Science and Engineering Consortium (CMSEC) Rutgers University New Jersey‚ U.S.A. Rutgers Catalyst Manufacturing Science and Engineering Consortium (CMSEC) Rutgers Catalyst Consortium since 2003 While a large segment of the US industry‚ including the petroleum‚ chemical‚ pharmaceutical‚ automotive‚ and energy industries makes and/or uses catalysts‚ there has been no academic program focusing on the operations required to make catalytic materials. Thus‚ catalyst manufacturing
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