Introduction Methyl Salicylate has been used for a long time for its pleasant odour and flavour. The objective of this experiment was to carry an organic synthesis; the preparation of salicylic acid from methyl salicylate. To do an organic synthesis‚ it is needed to chemically modify the molecules of another compound to end up with the desire compound. Methyl salicylate is the major constituent of wintergreen oil‚ which is why it was used in this experiment as the starting material. The new technique
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Genomes as Resources for Biocatalysis JON D. STEWART Department of Chemistry‚ University of Florida Gainesville‚ Florida 32611 I. II. III. IV. Introduction Yeast Dehydrogenase Gene Identification Expression and Isolation of Yeast Dehydrogenases Characterization of Yeast Dehydrogenases A. Results from Ethyl Acetoacetates B. Results from Higher Homologs C. Synthetic Applications V. Conclusions and Future Directions References 31 33 34 35 37 40 43 46 49 I. Introduction How well biocatalysis
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algorithm is proposed for removing large objects from digital images. The challenge is to fill in the hole that is left behind in a visually plausible way. In the past‚ this problem has been addressed by two classes of algorithms: (i) “texture synthesis” algorithms for generating large image regions from sample textures‚ and (ii) “inpainting” techniques for filling in small image gaps. The former work well for “textures” – repeating twodimensional patterns with some stochasticity; the latter focus
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individual because of the individuals need for control which is impacted by others and the environmental conditions which can then cause certain explanatory styles. Parents‚ teachers‚ weather conditions‚ gender‚ hair‚ race‚ peers‚ and the culture all contribute to a helplessness unique to youth. To overcome this condition‚ I would include a temporary/specific explanatory style which mostly optimistic and mastery-oriented. People with this mindset view failure as temporary and as a challenge instead of an
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reaction conditions. © 1998 ElsevierScienceLtd. All rights reserved. The choice of solid support and linker are important factors for success in solid phase synthesis. ~ Unlike solution phase synthesis‚ where an optimisation study will result in reproducible reactions‚ time consuming validation steps usually required in solid phase synthesis may only be specific for a particular solid support s Here‚ we present a comparative study of reaction rates‚ yields‚ and purity to assess the effect of the
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I. INTRODUCTION Synthesis Acetylsalicylic acid is an acetyl derivative of salicylic acid which appears as a white and crystalline and a weakly acidic substance with a melting point of 135°C and is also known to be aspirin. It is one of the most widely used drugs that can lower fever and is used as a painkiller. According to (Escobel‚ 2011)‚ Aspirin is synthesized through the reaction of salicylic acid with acetyl anhydride that causes a chemical reaction that turns salicylic acid’s hydroxyl group
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In “The Scottish Parliament and witch-hunting in Scotland under the Covenanters”‚ Young used an explanatory framework as it examines the role of the Scottish parliament and witch-hunting during the 1640’s when the covenanting movement was in power. This author used primary sources as Young referred to acts and bodies in the Scottish government that paved the way for witch hunts at the local level. An example of this is the 1563 witchcraft act passed by the Scottish parliament. Moreover‚ the church
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II. Synthesis This activity helps me to understand myself better by knowing what people think of me. It aims to foster self-awareness and self-improvement. I found out that my family thinks that I am a responsible person in terms of sense of responsibility. But my brother thinks I’m immature. In terms of duties at home‚ my mother and father understand that I don’t perform my duties because I’m busy with my studies. My sister thinks it too but she justified that I perform when I’m not busy. When
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● Introduction ● Initial problem ● How to Compare Recordings ● Dependence of system’s accuracy ● Algorithm instruction ● Source Code ● Software Requirements ● Hardware Requirements ● References Introduction The project “Attendance through Voice Recognition” is a tool that can help an organization or academic institute to have attendance of their employee or students and also the faculty members.It also record the time and date at which the member is present
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Student number: 658184 Due Date: 19th Sept 2012 Paracetamol: Preparation‚ Purification and Analysis 1.1 Introduction Paracetamol (N- (4- hydroxyphenyl) ethanamide) or acetaminophen is a widely used analgesic (pain reliever) and antipyretic (fever reducer). It is a relatively safe drug though toxicity has been observed with very high doses.1 according to the British Pharmacopeia (BP) 111 paracetamol should contain between 95.0%- 105.0% of the stated product.2 It can be synthesised by reacting 4-aminophenol
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