نتایج جستجو برای: as v

تعداد نتایج: 5807972  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه کردستان - دانشکده محیط زیست 1393

هدف از مطالعه حاضر حذف as (v) از محلول های آبی با استفاده از ماده نانو حفره سیـلیکاتی mcm-48 عامل دار شده با 3-آمینو پروپیل تری متوکسی سیلان در سیستم ناپیوسته است. سنتز mcm-48 در دمای محیط و به روش سل-ژل انجام شد و عامل دار کردن آن به روش پس سنتزی صورت گرفت. ساختار جاذب تولید شده با استفاده از آنالیزهای تفرق اشعه ایکس (xrd)، جذب- واجذب گاز نیتروژن (bet)، آنالیز وزن سنجی حرارتی (tga)، میکروسکوپ ...

Journal: :Journal of bioenergetics and biomembranes 2005
Emma Jean Bowman Barry J Bowman

V-ATPases are large, complex enzymes responsible for acidification of many internal compartments in eukaryotic cells. They also occur on plasma membranes of specialized cells, where they acidify the surrounding milieu. Numerous physiological processes depend on the activity of V-ATPases, and V-ATPases are implicated as a contributing factor in multiple diseases, including osteoporosis, deafness...

Journal: :iranian journal of mathematical chemistry 2013
m. h. reyhani s. alikhani m. a. iranmanesh

let g = (v, e) be a simple graph. hosoya polynomial of g isd(u,v)h(g, x) = {u,v}v(g)x , where, d(u ,v) denotes the distance between vertices uand v. as is the case with other graph polynomials, such as chromatic, independence anddomination polynomial, it is natural to study the roots of hosoya polynomial of a graph. inthis paper we study the roots of hosoya polynomials of some specific graphs.

Journal: :Biochimica et biophysica acta 2007
Danny W-K Ng Tao Wang Mahesh B Chandrasekharan Rodolfo Aramayo Sunee Kertbundit Timothy C Hall

Modification of the histone proteins that form the core around which chromosomal DNA is looped has profound epigenetic effects on the accessibility of the associated DNA for transcription, replication and repair. The SET domain is now recognized as generally having methyltransferase activity targeted to specific lysine residues of histone H3 or H4. There is considerable sequence conservation wi...

2010
James J. Sheehan Brendan Simms

In December 1774, seventeen-year-old Carl August, Prince of Saxe Weimar, met the celebrated young author Johann Wolfgang Goethe in a Frankfurt hotel room. The meeting was cordial, indeed the two men got along together so splendidly that, less than a year later, Goethe accepted the prince’s invitation to move to Weimar, where he would spend the rest of his long and incredibly productive life. I ...

2015
Gojko Žarić Gorka Fraga González Jurgen Tijms Maurits W. van der Molen Leo Blomert Milene Bonte

A failure to build solid letter-speech sound associations may contribute to reading impairments in developmental dyslexia. Whether this reduced neural integration of letters and speech sounds changes over time within individual children and how this relates to behavioral gains in reading skills remains unknown. In this research, we examined changes in event-related potential (ERP) measures of l...

2006
Melanie N Zeilinger Eva M Farré Stephanie R Taylor Steve A Kay Francis J Doyle

In plants, as in animals, the core mechanism to retain rhythmic gene expression relies on the interaction of multiple feedback loops. In recent years, molecular genetic techniques have revealed a complex network of clock components in Arabidopsis. To gain insight into the dynamics of these interactions, new components need to be integrated into the mathematical model of the plant clock. Our app...

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