نتایج جستجو برای: سورفکتانت sds
تعداد نتایج: 21615 فیلتر نتایج به سال:
Shampoo and cleansers containing anionic surfactants including sodium dodecyl sulphate (SDS) often cause pruritus in humans. Daily application of 1-10% SDS for 4 days induced hind-paw scratching (an itch-related behaviour) in a concentration-dependent manner, and 10% SDS also caused dermatitis, skin dryness, barrier disruption, and an increase in skin surface pH in mice. SDS-induced scratching ...
در این پروژه تحقیقاتی از تکنیک های استخراج با آب گرم و ریزاستخراج مایع- مایع پخشی به همراه hplcبا آشکارساز آرایه دیودی برای استخراج و اندازه گیری سولفونامیدها در نمونه های آبی و گوشت استفاده شد. ریز استخراج توسط افزایش 45 میکرولیتر محلول 5% سورفکتانت (متیل تری آلکیل آمونیوم کلراید) در حلال پخشی کلروفرم به 5 میلی لیتر محلول نمونه آبی توسط یک سرنگ50 میکرولیتری انجام گرفت. پس ازسانتریفوژ، فاز آلی ...
به منظور ساخت و بررسی زمان پایداری امولسیون سوخت آب در اکتان، از دستگاه فراصوت استفاده شد.از توان 300 وات و سیکل 0.7 و از سونوترودی با قطر 14 میلی متر از جنس تیتانیوم برای ساخت نانو امولسیون آب در اکتان استفاده شده است.با بررسی زمان های مختلف زمان 5 دقیقه را زمان مناسبی برای ساخت این نوع نانو امولسیون دانستیم زیرا در این زمان با افزایش زمان از 5 تا 15 دقیقه تنها شاهد کاهش 36 نانومتری در سایز قط...
In this investigation low, non-solubilizing concentrations of the strong anionic detergent SDS were used to perturbate the interaction of Ca2+ and Pi with their respective binding domains on the sarcoplasmic reticulum Ca-transport ATPase. Rising SDS concentrations produce a two-step decline of Ca2+-dependent ATP hydrolysis. At pH 6.15, SDS differently affects high affinity Ca2+ binding and phos...
Barren ground and sites with low coverage by vegetation (e.g., dunes, soil surfaces, dry lakes, riverbeds) are the main source areas of sand dust storms (SDS). The understanding causes, processes (abrasion, deflation, transport, deposition), influencing factors sandy dusty particles moving wind both in boundary layer atmosphere basic prerequisites to distinguish between SDS. Dust transport modu...
Shwachman-Diamond syndrome (SDS) is a rare inherited disorder characterized by bone marrow (BM) dysfunction and exocrine pancreatic insufficiency. SDS patients have an increased risk for myelodisplastic syndrome and acute myeloid leukemia. Mesenchymal stem cells (MSCs) are the key component of the hematopoietic microenvironment and are relevant in inducing genetic mutations leading to leukemia....
The main aim of the paper is to evaluate ferroprecipitates as immobilization agents for removing selected surfactants from aqueous solutions. Two ferro-precipitates based on iron oxides were used. Adsorbents were varied both in elementary composition and mineral composition. Sodium dodecyl sulphate (SDS) was used as a model anionic surfactant. Simultaneous measurements of the surfactant’s adsor...
INTRODUCTION SDS-polyacrylamide gel electrophoresis (SDS-PAGE) represents the second-dimension separation of two-dimensional (2D)-PAGE. Large-scale proteome analysis usually requires simultaneous electrophoresis of batches of second-dimension SDS-PAGE gels to maximize the reproducibility of 2D electrophoresis protein profiles. This requirement is most easily met using multiple, vertical second-...
Probably the most widely used of techniques for analyzing mixtures of proteins is SDS polyacrylamide gel electrophoresis. In this technique, proteins are reacted with the anionic detergent, sodium dodecylsulfate (SDS, or sodium lauryl sulfate) to form negatively charged complexes. The amount of SDS bound by a protein, and so the charge on the complex, is roughly proportional to its size. Common...
FDA (the Factorized Distribution Algorithm) is an evolutionary algorithm that combines mutation and recombination by using a distribution. The distribution is estimated from a set of selected points. It is then used to generate new points for the next generation. In general a distribution defined forn binary variables has 2n parameters. Therefore it is too expensive to compute. For additively d...
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