نتایج جستجو برای: primary and secondary structures
تعداد نتایج: 16992928 فیلتر نتایج به سال:
The encapsidation signal of bovine leukemia virus (BLV) was previously shown by deletion analysis to be discontinuous and to extend into the 5' end of the gag gene (L. Mansky et al., J. Virol. 69:3282-3289, 1995). The global minimum-energy optimal folding for the entire BLV RNA, including the previously mapped primary and secondary encapsidation signal regions, was analyzed. Two stable stem-loo...
the extent to which written corrective feedback on linguistic errors can play a role in helping l2 writers improve the accuracy of their writing continues to be an issue of interest to researchers and teachers since truscott (1996) mounted a case for its abolition. while there is growing empirical evidence that written corrective feedback can successfully target some types of linguistic error (...
background: nowadays, highly specific aptamers generated by cell selex technology (systematic evolution of ligands by exponential enrichment) are being applied for early detection of cancer cells. prostate specific membrane antigen (psma), over expressed in prostate cancer, is a highly specific marker and therefore can be used for diagnosis of the prostate cancer cells. the aim of the present s...
the present dissertation aims to investigate four-word lexical bundles in applied linguistics research articles by iranian and internationally-published writers. the aims of this study are two-fold: first of all, attempts have been made to create a comprehensive list of the most commonly used four-word lexical bundles categorized by their type and token frequency, their structural characteristi...
the follicle arrangement and secondary to primary follicle ratio (s/p) were studied in the skin of nine male and nine female markhoz goats breed from one week to 16 weeks of age. the skin samples were taken from mid-side area of each animal in nine stages every other week. the follicles were arranged in groups, predominantly including three primary and several secondary follicles. each prim...
اساس نظریه مجموعه های ناهموار، بدین صورت است که برای هر زیرمجموعه از یک مجموعه کلی، با استفاده از یک رابه هم ارزی، یک زوج مرتب از مجموعه ها را معرفی می کند. هر موفه را به ترتیب، تقریب پایینی و بالایی می نامند. تقریب پایین از یک زیرمجموعه،اجتماع تمام عناصری از مجموعه ی کلی است که کلاس هم ارزی مربوط به آن عنصر، در زیرمجموعه ی مورد نظر قرار گیرد و همچنین، تقریب بالا از آن زیرمجموعه، اجتماع تمام عن...
Among different coronavirus genera, the receptor-binding S1 subunits of their spike proteins differ in primary, secondary, and tertiary structures. This study identified shared structural topologies (connectivity of secondary structural elements) in S1 domains of different coronavirus genera. The results suggest that coronavirus S1 subunits share a common evolutionary origin but have attained d...
SUMMARY The non parasitic benign cysts of spleen are rare iesions and can he divided into two groups, primary and secondary. In the cysts in the primary group an epithelial lining is present. Secondary cysts are far more frequent, accounting for 80% of all splenic cyst. ln this article we report about an 23 year old girl admitted with LLQ pain and feeling of abdominal mass. After splenectomy ...
Olivine is one of the major crystals in ultrabasic rocks of Piranshahr Ophiolitic Complex. This mineral occurs as anhedral with cracks and fractures. Commonly, olivine is altered to serpentine along the fractures and rims. In some cases, serpentine crosscut the olivine. According to BSE images and mineral chemistry studies of olivine, the secondary iron- rich olivines occur at the rim of primar...
Non-coding RNAs (ncRNAs) have important biological functions in living cells dependent on their conserved secondary structures. Here, we focus on computational RNA secondary structure prediction by exploring primary sequences and complementary base pair interactions using the Conditional Random Fields (CRFs) model, which treats RNA prediction as a sequence labelling problem. Proposing suitable ...
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