نتایج جستجو برای: margalef d
تعداد نتایج: 577766 فیلتر نتایج به سال:
Saltwater intrusion is a potential risk damaging crop diversity and productivity due to degraded soil physicochemical properties. However, little known about how salinity affects the structure function of nematodes community in intensive rice cultivated area. This study aimed (1) assess impacts saltwater on nematode alluvial acid sulfate soils; (2) evaluate its relation with conditions. reduced...
Abstract Temple trees, including the gymnosperm Platycladus orientalis and angiosperm Styphnolobium japonicum , have been planted in China for thousands of years. Tree age thus varies widely from young to ancient trees. Foliar endophytes P. S. were surveyed this exploratory study that was based on isolation into culture sequencing fungi trees varying 10 5000 years ( ) 1700 ). Sequenced belonged...
Permian brachiopods from Oman are well-known as valuable tools for correlation and palaeobiogeographical palaeoclimatic reconstructions. Here, we describe a new brachiopod fauna the Qarari Unit of allochthonous Batain Group in northeast Oman. Brachiopods were collected four localities: Wadi Khawr al Jaramah (WKJ), Jebel (JQ1), X (JX3) Shiya (SH11). The age fossiliferous localities is wellconstr...
Vitamin D deficiency is endemic to South Asia, and is associated with varied biochemical and clinical presentations. Health care professionals of all specialties need to ensure optimal Vitamin D level of all persons, irrespective of age or gender, to prevent the many complications that are associated with vitamin D deficiency. These pragmatic recommendations aim to support health care professio...
فرض کنیم(r,m) یک حلقه موضعی نوتری ،i یک ایده آل r و m یک r-مدول متناهی مولد باشد با dimm=d .واضح است که اگرr کامل باشد بنا به دوگان ماتلیس،آن گاه مدول کوهمولوژی موضعی h_i^d (m) ویژگی زیر را دارد: به ازای هر ایده آل اول ??"ann" ?_"r" "h" ?_"i" ^"d" ("m" )?p داشته باشیم: ?ann?_r (0:_(h_i^d (m) ) p)=p (*) علاوه براین، مدول کوهمولوژی موضعیh_i^d (m) در حالت کلی ویژگی(*) را ندارد.در این پایان نامه ...
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