منابع مشابه
Semiochemicals of the Scarabaeinae, III*: Identification of the Attractant for the Dung Beetle Pachylomerus femoralis in the Fruit of the Spineless Monkey Orange Tree, Strychnos madagascariensis
Following the observation tha t the non-ball-rolling dung beetle Pachylomerus fem oralis (K irby) rolled the flesh-covered seeds from the fruit o f the spineless m onkey orange tree, Strychnos madagascariensis Poiret, an investigation into the chemical a ttrac tan ts o f this fruit was made. U sing headspace gas chrom atography with electroantennographic and flame ioni zation detection in para...
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Progress that has been made in research on the chemical aspects of mammalian semiochemistry over the past decade is discussed on the basis of examples from the most topical problem areas. The chemical characterization of the volatile organic constituents of the urine, anal gland secretions and exocrine gland secretions of rodents, carnivores, proboscids, artiodactyls and primates, and their pos...
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Members of the family Bignoniaceae are mostly found in tropical and neo-tropical regions in America, Asia and Africa, although some of them are cultivated in other regions as ornamentals. Species belonging to this family have been extensively studied in regard to their pharmacological properties (as extracts and isolated compounds). The aim of this review is to summarize the reported scientific...
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cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...
romantic education:reading william wordsworths the prelude in the light of the history of ideas
عصر روشنگری زمان شکل گیری ایده های مدرن تربیتی- آموزشی بود اما تاکید بیش از اندازه ی دوشاخه مهم فلسفی زمان یعنی عقل گرایی و حس گرایی بر دقت و وضوح، انسان عصر روشنگری را نسبت به دیگر تواناییهایش نابینا کرده و موجب به وجود آمدن افرادی تک بعدی شد که افتخارعقلانیتشان، تاکید شان بر تجربه فردی، به مبارزه طلبیدن منطق نیاکانشان وافسون زدایی شان از دنیا وتمام آنچه با حواس پنجگانه قابل درک نبوده و یا در ...
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ژورنال
عنوان ژورنال: Journal of Chromatography A
سال: 2008
ISSN: 0021-9673
DOI: 10.1016/j.chroma.2007.09.041