In this experiment the objective was to perform a Diels-Alder reaction using cyclopentadiene and maleic anhydride to synthesize the product‚ cis-Norbornene-5‚6-endo-dicarboxylic anhydride. The Diels-Alder reaction is one of the most important reactions in organic chemistry and was first investigated by Otto Diels and Kurt Alder in Germany. It is a [4+2] concerted cycloaddition reaction which involves a diene and a dienophile. The Diel-Alder reaction are mainly used for creating new carbon-carbon
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Characterization of a Yam Class IV Chitinase Produced by the Recombinant Pichia pastoris X-33 Department of Botany‚ Jahangirnagar University‚ Savar‚ Dhaka 1342‚ Bangladesh Abbreviations: Endo H‚ Endoglycosidase H; PR protein‚ pathogenesis related protein; P. pastoris‚ Pichia pastoris; VTS‚ vacuolar targeting signal; PCR‚ polymerase chain reaction; PAGE‚ polyacrylamide gel electrophoresis; SDS‚ sodium dodecyl sulfate Abstract A yam (Dioscorea opposita Thunb) class IV chitinase‚ whose genomic
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Marriage between two people with different culture Most people think they should remain within their culture when they marry. But‚ don’t you think it would be fascinating to marry someone from a different culture? Getting marry often requires compromise‚ flexibility and love‚ and for many intercultural couples‚ getting marry has been the learning experience of a lifetime. In fact‚ the whole relationship process can be difficult for the average couple‚ but for intercultural couples‚ these aspects
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COMPARATIVE STUDY OF BRANDS 3 In the market place of the pharmaceutical industry‚ many marketing strategies and extensive techniques are used to have consumers request their drug products. The pharmaceutical industry is a very competitive environment. It seems as though there are no boundaries that prevent them from bringing their product to market first or proving that their product is superior to its competitors. All things considered‚ creating a brand is essential and market
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spectrum with a chemical shift of 80 ppm. These results support the hypothesis. Steric approach control states that steric hindrance will control the stereoselectivity of a reaction and direct the reducing agent to the less hindered face. In this case the endo face is the least hindered and will produce isoborneol. Further evidence from comparing the 13C NMR spectrum of borneol to isoborneol will show a difference in chemical shifts of one of the methyl bridge carbons that will conclude in what position
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statins are only recently gaining public attention though they have been available for many years. Various cholesterol-lowering agents had been discovered during the 1950s and 1960s. However‚ the majority had unwanted side effects. In 1971‚ Drs. Akira Endo and Masao Kuroda began searching for a cleaner drug to treat hypercholesterolemia. Various experiments on animals and humans had shown that cholesterol could either be absorbed from the diet or synthesized de novo‚ when the diet lacked sufficient
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male w/ PMH (past medical history) DM and 20 year pack history with one day h/o pneumonia and day #1 abx (antibiotic) treatment. 1) ID: community acquired pneumonia x1 day with infiltrates in right lower lobe on broad spectrum abx coverage 2) Endo: DM type II‚ blood sugars are well controlled 3) F/E/N: (fluids/ electrolytes/ nutrition) pt clinically well hydrated‚ electrolytes wnl (within normal limits) appropriate nutritional needs met 4) Prophylaxis: pt needs DVT and ulcer prophylaxis
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reconstructs many aspects of the Wari’s culture as death‚ society and grievance interwoven with the culture abundance that came with the ‘contact’ of the outside world. From being socially and cultural isolated from the outside world‚ the Wari found that endo cannibalism was a form of expressing love and community. Conklin amplifies here that these practices were deeply embedded in the social relations and culture of the Wari‚ and so they were deeply disturbed by the contact in the 1960’s that ended their
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4.1 Three Structured Constructs All programs can be constructed using only the three basic constructs. It is the concept of structured programming that a program should be developed using only these three basic constructs. It is not wrong to use the GOTO structure but it is discouraged‚ because programs with the GOTO structure are often classified as unstructured. The three basic constructs are Sequence Selection Iteration/Repetition 4.1.1 Sequence Construct In a sequence construct‚ the way the
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Abstract: Barbers poll worm is a common problem affecting Queensland and the top half of New South Wales. For this investigation sheep from the school farm were tested for levels of worms. Facies samples were collected and sent off to the vet‚ this revealed that the sheep had high levels of worms. Background: What are ectoparasites? Ectoparasites are external parasites that live on the outside of an organism’s body. These parasites feed on the blood of an animal. When the parasites attach themselves
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