نتایج جستجو برای: dscmicroemulsion microstr ucturepseudo ternary phase diagramsaxs

تعداد نتایج: 613305  

2003
J. H. Barry

We consider a model for ternary polymer mixtures with biand tri-functional monomers and solvent molecules embedded on a honeycomb lattice. We first show that the grand partition function of the model polymer mixture is equivalent to the partition function of an eight-vertex model on the same lattice. This equivalence transforms the model into an Ising model in a nonzero external magnetic field....

Journal: :Angewandte Chemie 2014
Martin F Haase Jasna Brujic

Multiple emulsions with an "onion" topology are useful vehicles for drug delivery, biochemical assays, and templating materials. They can be assembled by ternary liquid phase separation by microfluidics, but the control over their design is limited because the mechanism for their creation is unknown. Herein we show that phase separation occurs through self-similar cycles of mass transfer, spino...

2008
Lianjiang Tan Ding Pan Ning Pan

Experimental cloud-point data were obtained by cloud-point titration. The phase diagram for a ternary system of water–dimethylformamide–polyacrylonitrile was determined by numerical calculation on the basis of the extended Flory–Huggins theory and was found to agree well with the cloud-point data. To construct the theoretical phase diagram, three binary interaction parameters were obtained with...

Journal: :The Biochemical journal 2009
David Holowka

Since evidence first appeared for 'detergent-resistant membranes' in the early to mid-1990s, cell biologists from a wide spectrum of biological sciences have been intrigued by the functional relevance of this indication of membrane heterogeneity, commonly referred to as 'lipid rafts'. Model membrane studies revealed that these lipid rafts are related to the more ordered liquid phase that forms ...

A new theoretical model based on the local composition concept (TNRF-mNRTL model) was proposed to express the short-range contribution of the excess Gibbs energy for the solutions containing polymer and electrolyte. This contribution of interaction along with the long-range contribution of interaction (Pitzer-Debye-Hückel equation), configurational entropy of mixing (Flory-Huggins relation)...

Journal: :iranian journal of pharmaceutical research 0
maryam azimi department of pharmaceutical biotechnology, school of pharmacy, shahid beheshti university of medical sciences nastaran nafissi-varcheh department of pharmaceutical biotechnology, school of pharmacy, shahid beheshti university of medical sciences mohammad ali faramarzi department of pharmaceutical biotechnology, faculty of pharmacy & biotechnology research center, tehran university of medical sciences reza aboofazeli department of pharmaceutics, school of pharmacy, shahid beheshti uni. med. sci.

the aim of this study was to develop a microemulsion system as a medium for laccase-catalyzed reactions. phase behavior studies were conducted by constructing partial pseudo-ternary phase diagrams for systems comprising of cetyltrimethylammonium bromide (ctab), various organic solvents as the oil phase (i.e., hexane, cyclohexane, heptane, octane, isooctane, toluene, isopropyl myristate), two co...

In a ternary semihyperring, addition is a hyperoperation and multiplicationis a ternary operation. Indeed, the notion of ternary semihyperringsis a generalization of semirings. Our main purpose of this paper is to introducethe notions of fuzzy hyperideal and fuzzy bi-hyperideal in ternary semihyperrings.We give some characterizations of fuzzy hyperideals and investigateseveral kinds of them.

2011
Shigeru Saito Toshiyuki Takashima Katsumi Miyama Kazuya Kurokawa Toshio Narita

Compositions with tie lines between the and ( ; ) phases in a ternary Re-Cr-Ni system were investigated by heat treating various ternary Re-Cr-Ni alloys at 1573K in vacuum for up to 2000 h. The microstructures of the Re-containing alloys that had been water quenched after various heat treatment for times were observed and their concentration profiles for Re, Cr, and Ni were measured using an el...

Journal: :iranian journal of pharmaceutical research 0
malihe shahbaziniaz 1- department of pharmaceutics, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran. 2- student research committee, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran. seyed mohsen foroutan department of pharmaceutics, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran. noushin bolourchian department of pharmaceutics, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran.

clarithromycin (cla), a broad-spectrum macrolide, is a poorly soluble drug with dissolution rate limited absorption. the aim of this investigation was to prepare cla nanoparticles from a ternary ground mixture in the presence of sodium lauryl sulfate (sls) and polyvinyl pyrrolidone (pvp) as co-grinding water-soluble compounds, in order to improve the drug dissolution rate. different weight rati...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1390

علم ترمودینامیک و خواص انتقالی در فرآیندهای طراحی وکاربردی ضروری هستند. دانسیته و ویسکوزیته مـخلوطهای چـند تایی در بـسیاری از مـحاسبات مهندسی شیمی مانند انتقال شار، گرما و انتقال جرم مورد نیاز است. دانسیته و ویسکوزیته مـخلوطهای دوتایی وسـه تایی تشـکیل شده از :کلروبنزن، پیریدین وتولوئن دردمـاهای 15/ 288 درجه کلوین تا 15/ 313 درجه کلوین در فشار جو اندازه گیری شد. از این داده های تجربی برای محاس...

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