نتایج جستجو برای: co solvent

تعداد نتایج: 384677  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند - دانشکده علوم انسانی 1389

abstract amino acids are building blocks of proteins, and play a vital role in living beings existence and their functionality. the interaction of these compounds with metal ions is of great importance to biochemists, and chemists, because their functions can be utilized as a model in understanding enzymes mechanism for transport of metal ions to tissues. among twenty essential amino acids w...

Behrooz Roozbehani, Ehsan Rahmandoost Mohammad Hosein Maddahi

CO2 emissions from combustion flue gases have turned into a major factor in global warming. Post-combustion carbon capture (PCC) from industrial utility flue gases by reactive absorption can substantially reduce the emissions of the greenhouse gas CO2. To test a new solvent (AIT600) for this purpose, a small pilot plant was used. This paper presents the results of studies ...

Journal: :iranian journal of pharmaceutical sciences 0
rassoul dinarvand department of pharmaceutics, faculty of pharmacy, tehran university of medical sciences, tehran, iran fatemeh atyabi department of pharmaceutics, faculty of pharmacy, tehran university of medical sciences, tehran, iran shadi h. moghadam department of pharmaceutics, faculty of pharmacy, tehran university of medical sciences, tehran, iran neda islami department of pharmaceutics, faculty of pharmacy, tehran university of medical sciences, tehran, iran

in this study, microspheres containing estradiol valerate were prepared by solvent evaporation method using poly (glycolide-co-lactide) (plga 50:50) and poly (lactide). the effect of different process variables such as polymer type, drugpolymer ratio, stirring rate, volume of internal phase and temperature of external phase on the morphology, particle size distribution, encapsulation efficiency...

Journal: :Journal of chromatography. A 2014
Dennis Åsberg Martin Enmark Jörgen Samuelsson Torgny Fornstedt

A chemometric approach is used for studying the combined effect of temperature, pressure and co-solvent fraction in analytical and preparative supercritical fluid chromatography (SFC). More specifically, by utilizing design of experiments coupled with careful measurements of the experimental conditions the interaction between pressure, temperature and co-solvent fraction was studied with respec...

2016
Abdullah Sulaiman Al-Hobaib Mohammed Sulaiman Al-Suhybani Khalid Mohammed Al-Sheetan Hasan Mousa Mohammed Rafi Shaik

The objective of this research is to prepare and characterize a new and highly efficient polyamide TFC RO membrane by interfacial polymerization in dodecane solvent mixed with co-solvents. Three co-solvents were tested namely; acetone, ethyl acetate, and diethyl ether of concentration of 0.5, 1, 2, 3, and 5 wt %. The modified membranes were characterized by SEM, EDX, AFM and contact angle techn...

2001
Paul M. Randall

The purpose of this evaluation was to provide an objective evaluation of the use of supercritical carbon dioxide (CO,) as an alternative technology for spray applied in wood finishing processes using reduced solvent formulations. Union Carbide has pioneered this technology under the UNICARBTM trademark. In the UNICARBTM process, the solvent-like properties of supercritical CO, are employed to r...

2014
Elena A. Buvaylo Vladimir N. Kokozay Olga Yu. Vassilyeva Brian W. Skelton

The title compound, [Co(C13H9N2O2)2]·1.5C3H7NO, is formed as a neutral Co(II) complex with di-methyl-formamide (DMF) solvent mol-ecules. The Co(II) atom has a distorted O2N4 octa-hedral coordination sphere defined by two tridentate anionic Schiff base ligands with the O atoms being cis. The coordination sphere around the Co(II) atom is geometrically different from that reported for the co-cryst...

2012
Tanzeela N. Raja Albert M. Brouwer Tijs Nabuurs Ronald Tennebroek

Repartitioning of co-solvents between particles of latex emulsions was investigated by means of a fluorescence method based on the detection of the amount of co-solvent via the solvatochromic shift of the emission maximum of a fluorescent probe, copolymerized at a low concentration. Complete repartitioning of co-solvents between particles of latex materials with a low T(g) (ca. 25 °C) occurred ...

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