نتایج جستجو برای: aristolochia ringens
تعداد نتایج: 683 فیلتر نتایج به سال:
Sustainability assessment of food supply chains is relevant for global sustainable development. A framework is proposed for analysing fishfood (fish products for direct human consumption) supply chains with local or international scopes. It combines a material flow model (including an ecosystem dimension) of the supply chains, calculation of sustainability indicators (environmental, socio-econo...
Pollination of several angiosperms is based on deceit. In such systems, the flowers advertise a reward that ultimately is not provided. We report on a previously unknown pollination/mimicry system discovered in deceptive Aristolochia rotunda (Aristolochiaceae). Pollinators were collected in the natural habitat and identified. Flower scent and the volatiles of insects (models) potentially mimick...
For the purpose of this Monograph, unless otherwise specified, the term ‘aristolochic acids’ refers to an extract of Aristolochia species comprising a mixture of aristolochic acid I and its demethoxylated derivative, aristolochic acid II. Aristolochia species also contain the related aristolactams, which are phenanthrene cyclic amides (EMEA, 2000). In some of the older literature, it is unclear...
Available data on the reproductive biology of the Peruvian anchoveta (ElIgrauJis ringens, nonhem/caltral stock, 4-1405) are reviewed and lUed to estimate monthly spawning size and egg production iran January 1953 to December 1982. Basic information used are: (a) monthly biomass by length class (4 to 20 em), (b) a model relating the shape and position of the matUration ogive to sea surface tcnpe...
BACKGROUND Aristolochic Acids (AAs) are major components of plants in Aristolochia and have been found to be nephrotoxic, carcinogenic and mutagenic. Herein reported are the isolation, identification and quantity determination methods of Aristolochic Acid-I (AA-I) and Aristolochic Acid-II (AA-II) toxic compounds of Aristolochia bracteolata indigenous to Central Sudan and medicinally used in div...
Hesperozygis ringens (Lamiaceae), popularly known as espanta-pulga, is a threatened species endemic to rocky and sandy regions of the Pampa biome. One factor that can influence low number individuals seed germination rate influenced by temperature and/or light. Thus, objective this study was evaluate light on H. ringens. The seeds two lots were sown paper substrate maintained in BOD chambers at...
The genus Aristolochia,an important source of physiologically active compounds that belong to different chemical classes, is the subject of research in numerous pharmacological and chemical studies. This genus contains a large number of terpenoid compounds, particularly diterpenes. This work presents a compilation of the 13C-NMR data of 57 diterpenoids described between 1981 and 2007 which were...
Aristolochia sinoburmanica Y.H.Tan & B.Yang, a new species of Aristolochiaceae from Putao, Kachin State, Myanmar, is described and illustrated. According to morphology (strongly curved perianth, 3-lobed limb, as well as 3-lobed gynostemium, anthers 6, adnate in 3 pairs to the base of gynostemium, opposite to the lobes), the species belongs to Aristolochia subgenus Siphisia. It is morphologicall...
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