نتایج جستجو برای: روش ctab

تعداد نتایج: 370994  

2012
P Sharma S D Purohit

A quick, simple and improved DNA extraction method from polysaccharide rich leaves of Boswellia serrata Roxb. has been developed. Different methods involving use of CTAB and SDS with or without modification were used. A CTAB based extraction method which uses diatomite to remove polysaccharides, such as, gums and resin, proved to be the best. This method allowed recovery of good quality DNA in ...

ژورنال: :زیست شناسی دریا 0
کیانا پیریان خسرو پیری سعید تمدنی جهرمی جلوه سهرابی پور امیر اقبال خواجه رحیمی

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...

Journal: :Journal of the American Chemical Society 2003
Kyu T Lee Yoon S Jung Seung M Oh

The tributylphenyltin (TBPT)-encapsulated resorcinol (R)-formaldehyde (F) sol was prepared inside the micelles of cetyltrimethylammonium bromide (CTAB). This core-shell-type sol was polymerized and further carbonized to obtain nanosized Sn-encapsulated spherical hollow carbon. The size of spherical hollow carbon and Sn metal particles was controllable by changing the R/CTAB or TBPT/CTAB mole ra...

ژورنال: گیاه پزشکی 2019
داود نجف زاده, سمانه ‌ لله گانی

استخراج DNA اولین مرحله در انجام آزمایشات ژنتیکی است، لذا کیفیت و کمیت مناسب DNA استخراج شده در مطالعات مولکولی امری بسیار ضروری می باشد. از این رو دستیابی به روش یا روش ­هایی که به سهولت استخراج DNA از زنبورعسل کوچک Apis florea Fabricius  که یکی از دو گونه زنبورعسل موجود در ایران است کمک کند، می ­تواند حائز اهمیت باشد. این گونه زنبورعسل به دلیل پراکندگی گسترده و همچنین ایفای نقش مستقیم در گرده...

2016
Santosh Kumar Meena Sirin Celiksoy Philipp Schäfer Andreas Henkel Carsten Sönnichsen Marialore Sulpizi

We provide a microscopic view of the role of halides in controlling the anisotropic growth of gold nanorods through a combined computational and experimental study. Atomistic molecular dynamics simulations unveil that Br(-) adsorption is not only responsible for surface passivation, but also acts as the driving force for CTAB micelle adsorption and stabilization on the gold surface in a facet-d...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2009
Sekh Mahiuddin Oliver Zech Sabine Raith Didier Touraud Werner Kunz

We show here the influence of n-alcohols (C(2)OH-C(8)OH) on the solubility behavior of cationic-anionic surfactant mixtures, so-called "catanionics". We studied catanionics of different compositions composed of sodium dodecyl sulfate (SDS)/cetyltrimethylammonium bromide (CTAB) and sodium dodecanoate (SDod)/CTAB mixtures. Interestingly, with a molar excess of SDS, long chain n-alcohols (C(4)OH-C...

2012
Yuan Zhang Ziqiang Tian Jian Xu Zhenxing Zhong Tao Yu Yucheng Chen

Adsorption and desorption of sulfamethoxazole (SMX) at water-sediment interfaces from Taihu Lake, China, were investigated in this study. The effects of a cationic surfactant, cetyltrimethylammonium bromide (CTAB), and an anionic surfactant, sodium dodecylbenzene sulfonate (SDBS), on the adsorption/desorption processes were also studied. Results show that adsorption and desorption could be well...

2017
A. Abekhti B. Taminau M. Kihal G. Daube

Btana is traditional preservation method that can sustain date’s supply during many years in comparaison to the commercial storage methods. However no scientific informations are available about biological factors that contribute to the successful of this method. Bacterial communities are a major key in preservation of many foods. Culture independent techniques are the most powerful tools to en...

2011

Kinetic studies on the reduction of dithizone by stannous chloride was carried out in acidic medium (HCl) at room temperature. The study was made in the presence of cationic surfactant, Cetyl Trimethyl ammonium Bromide (CTAB) and anionic surfactant, Sodium Dodecyl Sulphate (SDS). The reduction of dithizone in the presence of CTAB is much faster than in the absence of surfactant in acidic medium...

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