منابع مشابه
detection of volatile compounds of medicinal plants with some nano-sorbents using modified or new methodologies and investigation of antioxidant activity of their methanolic extracts
in this work, a novel and fast method for direct analysis of volatile compounds (davc) of medicinal plants has been developed by holding a filament from different parts of a plant in the gc injection port. the extraction and analysis of volatile components of a small amount of plant were carried out in one-step without any sample preparation. after optimization of temperature, extraction time a...
Varieties of Interdisciplinarity and of Scientific Progress
What is interdisciplinarity? What to make of it? What forms does it take? What drives it? The remarks to follow seek to offer a relatively broad overview of selected key concepts and key issues that together help identify and assess the very complex and non-unitary phenomenon of interdisciplinarity. In the literature on interdiscplinarity, there has been a pressing need for more systematic and ...
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Malaria is a parasitic disease of major global health significance that causes an estimated 2.7 million deaths each year. In this review we describe the burden of malaria and discuss the complicated life cycle of Plasmodium falciparum, the parasite responsible for most of the deaths from the disease, before reviewing the evidence that suggests that a malaria vaccine is an attainable goal. Signi...
متن کاملNew prenylchalcones from the hops of Humulus lupulus.
Two new prenylchalcones, xanthohumol C and D, together with two known prenylchalcone derivatives, xanthohumol (1) and 5''-(2''-hydroxyisopropyl)-dihydrofurano-[2'',3''-b]-4,4'-dihydroxy-6'-methoxy-chalcone (4) were isolated and identified from the hops of Humulus lupulus L. The structures of xanhohumol C and D were elucidated as 5''-hydroxy-6'',6''-dimethyl-dihydropyrano-[2'',3''-b]-4,4'-dihydr...
متن کاملNew Examples of Defective Secant Varieties of Segre-veronese Varieties
We prove the existence of defective secant varieties of three-factor and four-factor Segre-Veronese varieties embedded in certain multi-degree. These defective secant varieties were previously unknown and are of importance in the classification of defective secant varieties of Segre-Veronese varieties with three or more factors.
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ژورنال
عنوان ژورنال: Journal of the Institute of Brewing
سال: 1963
ISSN: 0046-9750
DOI: 10.1002/j.2050-0416.1963.tb01907.x