نتایج جستجو برای: bio based surfactant

تعداد نتایج: 2995077  

Journal: :Electrophoresis 2004
Cevdet Akbay Jepkoech Tarus Nicole L Gill Rezik A Agbaria Isiah M Warner

One disadvantage of amino acid-based chiral selectors for micellar electrokinetic chromatography (MEKC) is that either they have very low solubility or are insoluble at acidic pHs. In order to increase solubilities at lower pHs, we have synthesized a highly water-soluble achiral surfactant and copolymerized it with an amino acid-based chiral surfactant. These two surfactants were polymerized ei...

Journal: :Journal of nanoscience and nanotechnology 2009
A M Kannan V Renugopalakrishnan S Filipek P Li G F Audette L Munukutla

Bio-fuel cells are alternative energy devises based on bio-electrocatalysis of natural substrates by enzymes or microorganisms. Here we review bio-fuel cells and bio-batteries based on the recent literature. In general, the bio-fuel cells are classified based on the type of electron transfer; mediated electron transfer and direct electron transfer or electronic charge transfer (ECT). The ECT of...

Journal: :مدیریت خاک و تولید پایدار 0
زهرا عربی دانشگاه آزاد اسلامی واحد گرگان علی احمدی دانشگاه آزاد اسلامی واحد گرگان آسیه سیاه مرگویی دانشگاه علوم کشاورزی و منابع طبیعی گرگان

in order to investigation the effects of different combination and amount of chemical, biological and organic manure in present of water absorbent materials on some phenological, morphological and yield of soybean, a field study was carried out gorgan region climate conditions in a factorial experiment based on randomized complete block design with three replications. in this experiment two lev...

2004
Linda A. Figueroa Johanna Miller Helen E. Dawson

Application of surfactants to increase the mobility of hydrophobic contaminants in soils will create a secondary aqueous waste stream containing mobilized contaminant and surfactant that may be biodegraded. Previous research on surfactant biodegradation focused on low surfactant concentrations, typically less than 0.01 % (weightlweight). The goal of this project was to investigate the effect of...

2009
Steve Severtson Helen Xu Jiguang Zhang Larry Gwin Carl Houtman

Results are reviewed from a study on the distribution of surfactants in pressure-sensitive adhesive (PSA) films subsequent to the coating process. The PSAs are water-based acrylics synthesized with n-butyl acrylate, vinyl acetate and methacrylic acid and two commercially available surfactants, disodium (nonylphenoxypolyethoxy)ethyl sulfosuccinate (anionic) and nonylphenoxypoly(ethyleneoxy) etha...

Journal: :Journal of applied physiology 2012
Arnab Majumdar Stephen P Arold Erzsébet Bartolák-Suki Harikrishnan Parameswaran Béla Suki

Secretion of pulmonary surfactant by alveolar epithelial type II cells is vital for the reduction of interfacial surface tension, thus preventing lung collapse. To study secretion dynamics, rat alveolar epithelial type II cells were cultured on elastic membranes and cyclically stretched. The amounts of phosphatidylcholine, the primary lipid component of surfactant, inside and outside the cells,...

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