نتایج جستجو برای: ژن tufa
تعداد نتایج: 15989 فیلتر نتایج به سال:
Prominent tufa localities along the Provo level (∼14,000 C yr B.P.) shoreline in Pleistocene Lake Bonneville have been characterized in detail. Three types of tufa are recognized: capping tufa, beachrock, and capping tufa over beachrock. Capping tufa and beachrock are end members of a continuum based on variable clastic content. All three types typically occur on headland environments that had ...
Previous work suggested that the tufA gene, encoding protein synthesis elongation factor Tu, was transferred from the chloroplast to the nucleus within the green algal lineage giving rise to land plants. In this report we investigate the timing and mode of transfer by examining chloroplast and nuclear DNA from the three major classes of green algae, with emphasis on the class Charophyceae, the ...
The majority of research has focused on the association between trans unsaturated fatty acids (TUFA) from hydrogenated vegetable oils and heart disease even though TUFA are also produced from hydrogenated fish oil. We compared the acute effect of three solid fats on postprandial cholesterol, triacylglycerol (TAG) and NEFA concentrations in normocholesterolaemic males. Eight healthy male volunte...
استخراج dna از گونه های ماکرو جلبکی حاوی میزان بالای ترکیبات پلی ساکاریدی و فنولی جهت مطالعات ژنتیکی
استخراج dna خالص و کافی از ماکرو جلبک ها به علت دارا بودن رنج وسیعی از متابولیتهای ثانویه، نحوه اشتباه نمونهبرداری و خصوصیات مرفولوژی کی آن ها، معمولاً مشکل است. ازآنجاکه استخراج dna خالص جهت مطالعات مولکولی از اهمیت ویژهای برخوردار است این مطالعه باهدف استخراج آسان و ارزان dna ژنومی باکیفیت و کمیت بالا از نمونههای ماکرو جلبکی انجام شد. استخراج dna توسط روشهای فنول-کلروفرم، ctab و ctab تغی...
Several different barcoding methods of distinguishing species have been advanced, but which method is the best is still controversial. Chlorella is becoming particularly promising in the development of second-generation biofuels. However, the taxonomy of Chlorella-like organisms is easily confused. Here we report a comprehensive barcoding analysis of Chlorella-like species from Chlorella, Chlor...
Elongation factor Tu (EF-Tu), encoded by tuf genes, carries aminoacyl-tRNA to the ribosome during protein synthesis. Duplicated tuf genes (tufA and tufB), which are commonly found in enterobacterial species, usually coevolve via gene conversion and are very similar to one another. However, sequence analysis of tuf genes in our laboratory has revealed highly divergent copies in 72 strains spanni...
Tufa accumulations from the Gostilje River Basin and Sopotnica in SW Serbia are represented by both active fossil tufa precipitates. The aim of this study is to distinguish describe different facies determine environmental conditions, based on stable isotope data. We also compare our analysis with other deposits Europe. Four distinguished: moss tufa, algal stromatolitic laminated phytoclastic t...
OBJECTIVE To validate a fat intake questionnaire (FIQ) developed to assess habitual dietary intake while focusing on the assessment of detailed fatty acid intake including total trans unsaturated fatty acids (TUFA). DESIGN An 88 food item/food group FIQ was developed using a meal pattern technique. Validation was achieved by comparison with dietary intake assessed by a modified diet history (...
Lithological and biological features of a fossiliferous tufa in the Kapthurin Formation, Baringo, Kenya, reveal the presence of a lush wetland in a semiarid environment during the Middle Pleistocene (ca 500 ka) in this portion of the East African Rift Valley. Four geological sections, each between 3 m and 8 m in thickness, exposed over a distance of 0Æ5 km, reveal a 1 to 2 m thick paludal tufa ...
مایکوپلاسما آگالاکتیه یکی از عوامل اصلی ایجاد آگالاکسی در نشخوارکنندگان کوچک میباشد. ایران یکی از کانونهای اصلی اپیدمیهای سالانه این بیماری در جهان شناخته میشود. واکسن کشته آگالاکسی با استفاده از سه سویه بومی شیراز، طالقان و لرستان در موسسه رازی تولید میشود. به منظور شناسایی ویژگیهای ژنتیکی این سویهها سیستم تایپینگMulti Locus Sequence typing (MLST)i با تمرکز بر روی 5 ژن dnaA ،gltX ،gyrB ...
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