نتایج جستجو برای: stable cell
تعداد نتایج: 1905356 فیلتر نتایج به سال:
Soil carbon (C) storage is dependent upon the complex dynamics of fresh and native organic matter cycling, which are regulated by plant and soil-microbial activities. A fundamental challenge exists to link microbial biodiversity with plant-soil C cycling processes to elucidate the underlying mechanisms regulating soil carbon. To address this, we contrasted vegetated grassland soils with bare so...
Given the restructure of the electric sector in the whole world , they have developed many methods to allocate cost of the transmission system that, independently we established the different characteristics for one country to another they try to pay to the sector, giving signs of technical and economic efficiency. This publication is to emphasize with in the discussion and describe a method to...
The purpose of this paper is to study the coalition game between the potential fishing nations of Norwegian spring-spawning herring. We study a three-player cooperative game using Shapley value and nucleolus as solution concepts. We show that full cooperation between all fishing nations is not stable when the fishing fleets have a high-catchability coefficient. Further, the potential new member...
Two principally different statements of the problem of stable numerical differentiation are considered. It is analyzed when it is possible in principle to get a stable approximation to the derivative f ′ given noisy data fδ. Computational aspects of the problem are discussed and illustrated by examples. These examples show the practical value of the new understanding of the problem of stable di...
مطالعات اخیر نشان داده است که آهن از طریق کاتالیز واکنش تولید رادیکال آزاد هیدروکسیل (oh) می تواند باعث آسیب یاخته های اندوتلیال عروق کرونر و اکسیداسیون ldl شود و همچنین در آسیب میوکارد در مراحل ایسکمی و جریان دوباره خون به بافت قلبی نقش مهمی ایفا نماید. این مطالعه بطور تصادفی بر روی 130 بیمار مبتلا به انفارکتوس میوکارد (mi) شامل 94 مرد و 36 زن در بخش ccu بیمارستان قلب شهید رجائی تهران در دو مر...
Background The piwi family genes are highly conserved during evolution and play a crucial role in stem cell self-renewal, gametogenesis, and RNA interference in diverse organisms ranging from Arabidopsis to humans. Piwil2, also known as Hili, is one of the four human homologues of piwi. Piwil2 was found in germ cells of adult testis, suggesting that this gene functions in spermatogonial stem ce...
The stable colloidal dispersions of magnetic nano-particles in nematic liquid crystals are called ferronematics. Their behaviour in magnetic fields depends on various parameters such as anchoring energy, magnetic anisotropy, and shape and volume fraction of the particles. In the present paper, the threshold field is obtained for these colloidal nematics. Then, the influence of magnetic anisotr...
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