نتایج جستجو برای: betulaceae
تعداد نتایج: 189 فیلتر نتایج به سال:
گونه Betula litwinowii به عنوان گزارش جدیدی از شمال ایران نام برده می‌شود. ویژگی‌های ریخت شناسی این گونه با گونه نزدیک آن یعنی B. pendula مقایسه می شود. پراکنش جغرافیایی این دو گونه در ایران و مناطق مجاور نیز مورد بحث و بررسی قرار می‌گیرد.
Periplaneta americana (Blattodea:Blattidae) toxicity of 17 different plant-based essential oil against, adults were investigated. Used oils Lavendula angustifola (Lamiaceae), Zingiber officinale (Zingiberaceae), Citrus bergamia (Rutaceae), Juniperus virginiana (Cupressaceae), Piper nigrum (Piperaceae), Curcuna longa Betula lenta (Betulaceae), Myristica fragranaceae (Myristica fragranaceae), com...
Colon cancer is one of the most common cancers. In this study, we isolated a lignan [(-)-(2R,3R)-1,4-O-diferuloylsecoisolariciresinol, DFS] from Alnus japonica (Betulaceae) and investigated its biological activity and mechanism of action on colon cancer. DFS reduced the viability of colon cancer cells and induced cell cycle arrest. DFS also suppressed β-catenin nuclear translocation and β-caten...
THE FLORAS of Formosa and the Philippines are, in spite of the ir geographic proximity , distinctive in their general nature. The tw<? regions wereseparated by the Formosan rift (the Bashi Channel), probably in the early Tertiary, long' before their connections with other respective neighboring areas were severed. Thus the bulk of the Formosan flora was derived from China or from other floras t...
The Paleocene-Eocene Thermal Maximum (PETM) is correlated with the first occurrences of earliest modern mammals in the Northern Hemisphere. The latest Paleocene Clarkforkian North American Land Mammal Age, that has yielded rodents and carnivorans, is the only exception to this rule. However, until now no pre-PETM localities have yielded modern mammals in Europe or Asia. We report the first Clar...
The protection and propagation of rare endangered species are key to the preservation their population development; however, due scarcity individuals, potential effects status in whole forest ecosystem still poorly understood. Using data from a 60 × 140 m dynamic monitoring sample Carpinus tientaiensis (Betulaceae) Zhejiang Southeast China. We assessed distribution diameter at breast height (DB...
The prevalence of pollen allergy has increased due to urbanization, climate change and air pollution. effects green space pollution on respiratory health patients are complex best studied in spatio-temporal detail. We tracked 144 adults sensitized Betulaceae during the tree season (January–May) 2017 2018 assessed their exposure space, allergenic trees, pollutants birch pollen. Participants repo...
Climate change and anthropogenic habitat destruction have led to the extinction of many species. Ostrya rehderiana (Betulaceae) is a typical rare endangered species, only five wild individuals survived. In 1980s, offspring trees were planted for ex situ conservation grown into stable cultivated populations. To protect O. resources, genetic diversity structure this species analysed using SSR mar...
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