The organic chemistry laboratory

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  • The experiment had the unique aspect that students cured the resin in a round, seven-centimeter mold, forming a hardened epoxy disk. This disk, or medallion, was decorated in two different ways: first, a design was etched into the mold before curing to form a permanent imprint; second, the final epoxy medallion was decorated, post-cure, with colored permanent markers and glitter glue. After this laboratory experiment, students took home a durable ornament as a memento of their first-semester organic chemistry laboratory course.

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  • (bq) part 1 book "organic chemistry principles in context" has contents: fatty acid catabolism and the chemistry of the carbonyl group; investigating the properties of addition and condensation polymers; the industrial road toward increasing efficiency in the synthesis of hexamethylene diamine with stopovers at kinetic versus thermodynamic control of chemical reactions, nucleophilic substitution, and with a side trip to laboratory reducing agents,...and other contents.

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  • Much attention has increasingly been paid on safety, health and environmental issues, not only in industry but also in the university. Small scale experiments are safer in lowering the risk of chemical contact, more environmentally friendly, produce less waste and gain many other benefits. Although several universities are familiar with small scale chemistry and some universities have operated small scale chemistry laboratories successfully, several other universities have not yet adopted these practices, particularly for organic chemistry laboratory.

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  • High resolution 1 H NMR spectroscopy, an increasingly available instrumental method, is used in undergraduate organic laboratory practice as a simpler alternative to gas chromatographic method for the direct determination of the p/o ratios of the crude reaction product from the nitration of alkylbenzenes. The choice of isopropylbenzene as a substrate illustrates that steric effect can be significant in controlling regioselectivity in electrophilic aromatic substitution reactions.

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  • The house is 17.0 m long and 8.2 m wide, with a height of 3.4 m from the ground to the crest of the roof. The floor area is 127 m2 ; the enclosed volume is 310 m3 . The floor plan consists of three bedrooms, two bathrooms and a combined family, kitchen, dining and living area. The subfloor is plywood; 17 % of the floor area is resilient vinyl flooring; 72 % of the floor area is carpeted. The house is unfurnished with the exception of preinstalled kitchen and bath cabinetry and the monitoring equipment (described below)...

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  • Analysis of differences in content of nutrients and other substances in livestock products (meat, dairy, eggs) was more limited given the smaller evidence base. Analysis was conducted on nutrients or nutrient groups for which numeric data were provided in at least 5 of the 25 livestock product studies identified by the review.

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  • Sewage sludge has been used in agriculture over a long time. Since 1986 the utilization of sewage sludge has been subject to provisions stipulated in the EU Directive (86/278/EEC). The Directive sets out requirements with respect to the quality of sludge, the soil on which it is to be used, the loading rate, and the crops that may be grown on treated land. The European Commission considers that 86/278/EEC has been a success because there have been no reports of adverse effects wherever it has been applied.

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  • (BQ) Part 1 of the document Clinical chemistry (organ function tests, laboratory investigation) presents the following contents: Laboratory investigations, miscellaneous, inborn metabolic diseases (inborn errors of metabolism).

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  • Difficulty in accessing ground water without disturbing ground-water flow patterns, chemistry, microbiology, and the physical and chemical makeup of formation materials has made accurate characterization of in situ ground-water conditions a very challenging task.

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  • THERE IS probably no single course in “laboratory safety or chemical safety” at your college or university. Why not? Chemistry curricula have developed over many decades with a focus on the main topics of chemistry: organic, inorganic, physical chemistry, analytical chemistry, and (more recently) biochemistry. For decades, the topic of chemical safety was included at the margins of lab courses, mostly taught in a small way as a footnote to various lab experiments and procedures. Some chemists and chemistry teachers were aware of the importance of safety, while many were not.

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  • (BQ) Part 2 of the document Clinical chemistry (organ function tests, laboratory investigation) presents the following contents: Organ function tests (renal function tests, liver function tests, gastric function tests,...), laboratory investigations ( Hyperglycaemia, hypocortisolism, hyperlipoproteinaemias, jaundice,...).

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  • Basic Training in Chemistry is unique in that it gathers into one source the essential information that is usually widely dispersed. This book can be used as a quick reference guide to the different disciplines of Chemistry: the areas covered are General, Inorganic, Organic, and Instrumental Analysis. Although comprehensive in nature, Basic Training in Chemistry is not meant to replace any standard textbook but rather to be a supplement or additional source of information, or even a comprehensive review guide.

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  • The era of pharmacology, the science concerned with the understanding of drug action, began only about 150 years ago when Rudolf Buchheim established the first pharmacological laboratory in Dorpat (now, Tartu, Estonia). Since then, pharmacology has always been a lively discipline with “open borders”, reaching out not only to other life sciences such as physiology, biochemistry, cell biology and clinical medicine, but also to chemistry and physics.

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  • In 1996, the U.S. Department of Energy (DOE) and Mexico s Petr leos Mexicanos (PEMEX) began sponsoring this project to characterize the nature and sources of suspended particulate matter found in the ambient air in Mexico City. This collaborative effort follows another program sponsored by DOE and PEMEX in the early 1990 s to study gas phase pollutants and photochemical oxidants in the Valle de Mexico. 3,4 The high altitude, the year- round sunshine, and the complex atmospheric chemistry characteristic of Mexico City create a challenging laboratory for scientific research.

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