نتایج جستجو برای: isolation and structure elucidation
تعداد نتایج: 16988364 فیلتر نتایج به سال:
in fact this study is concerned with the relationship between the variation in thematice structure and the comprehension of spoken language. so the study focused on the following questions: 1. is there any relationship between thematic structure and the comprehension of spoken language? 2. which of the themes would have greated thematic force and be easier for the subjects to comprehend? accord...
this study tried to explore disciplinary variations of web blurbs across soft and hard knowledge fields on the one hand, and to illustrate how academic publishers exploit interactional metadiscourse devices in move structure of their blurbs on the other.
A novel C-homoprotoberberine alkaloid, Hediamine (2), has been isolated from the roots of Berberis actinucantha (Berberidaceae). Conclusive proof for the structure of hediamine was obtained by its comparison with the isomeric lactam (4), by chemical transformation, and by means of spectroscopic techniques (UV, IR, MS, NMR).
Objectives: Lichen is a stable mutually beneficial organism. Composed of fungi, Mycobiont united with algae, phycobiont or cyanobacteria. Since the ancient period, extract derived from Lichens utilized in medication numerous diseases. An attempt was made to isolate and structure elucidation erythrin, biologically active compound corticolous lichen Roccella montagnei, analyze antimicrobial antio...
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