نتایج جستجو برای: peg 4000

تعداد نتایج: 25520  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه کردستان - دانشکده علوم 1393

در این پژوهش تعادل مایع-بخار محلول های سه جزیی آبی پلیمری با استفاده از دو روش ایزوپیستیک و اسمومتری فشار-بخار (vpo) مورد بررسی قرار گرفته است. در روش اسمومتری فعالیت آب محلول هایی از پلیمرهای dex،peg400 ، pvp10000 و ppg400 در آب خالص و در محلول های آبی پلیمرهای peg400،peg6000 ، pvp10000 و ppg400 با کسرهای وزنی 0.05، 0.1، 0.15، 0.2 در دمای 308.15 کلوین اندازه گیری شده است. در روش ایزوپیستیک داد...

2011
Bhuvanesh Gupta Shalini Saxena Abha Arora Mohammad Sarwar Alam

Membranes have been developed by coating a blend of chitosan (CS) and polyethylene glycol (PEG) of different molecular weights (4000, 10,000 and 20,000) on cotton fabric followed by freeze drying. The influence of PEG molecular weight on the physical characteristics of the membranes has been investigated. The scanning electron microscopy of the coated fabric reveals porous structure. The porosi...

2013
Shailendra Singh Solanki Love Kumar Soni Rajesh Kumar Maheshwari

In the present investigation, mixed-solvency approach has been applied for the enhancement of aqueous solubility of a poorly water- soluble drug, zaltoprofen (selected as a model drug), by making blends (keeping total concentrations 40% w/v, constant) of selected water-soluble substances from among the hydrotropes (urea, sodium benzoate, sodium citrate, nicotinamide); water-soluble solids (PEG-...

Journal: :Dalton transactions 2011
Shu Zhen Pan Le Xin Song Jie Chen Fang Yun Du Jing Yang Juan Xia

In this study, we try to answer a fundamental question: what is the consequence of the noncovalent interaction between a polymer and a coordination compound? Here, polyethylene glycol (PEG-4000, PEG-b) and copper complex of ethylenediaminetetraacetic acid (H(2)CuY) were employed to solve this problem. A novel adduct (CEP) between H(2)CuY and PEG-b was prepared. Our results indicated several int...

Journal: :Analytical chemistry 2004
Daniel A Saucy Sven Ude I Wuled Lenggoro Juan Fernandez de la Mora

Aqueous solutions of poly(ethylene glycol) (PEG) in a 10 mM ammonium acetate buffer are electrosprayed, and the maximum charge state on the resulting gas-phase ions is reduced to unity using a radioactive source. The mobility distribution of these charged particles is then measured in air in a differential mobility analyzer of unusually high resolution. The relation Z(m) between the mobility Z ...

2009
T. Vasileva I. Ivanova

The Leuconostoc species require sucrose in the culture medium as an inducer for the elaboration of glucosyltransferase (GTF) and glucans. Among all the reported putification methods, polyethylene glycol (PEG) is a effective and single step purification method for GTF from Leuconostoc mesenteroides. The extracellular GTFs from Leuconostoc mesenteroides L.m.28 and mutant Leuconostoc mesenteroides...

2016

In the preformulation study physical compatibility of the drug-excipient was screened and compatibility was observed between Zaltoprofen and selected solubilizers. In the drug solubilizers interference study no interference was observed in UV spectrophometric analysis of Zaltoprofen in presence of employed solubilizers. Aqueous solubility of Zaltoprofen was found 0.028 mg/ml. The solubilizers s...

Journal: :Processes 2022

The poly(ethylene) glycol (PEG) capped mancozeb nanoformulation was prepared by the ultrasonic method using a 1% solution and 20% capping agent, PEG-4000. synthesized characterized UV-visible, FTIR, SEM TEM techniques. photolytic photo catalytic experiments were carried out in Borosil glass bottle presence of sunlight, varying pH proportions at single fortification level (1.0 g/mL) ground water...

Journal: :Drug discoveries & therapeutics 2011
M Etman M Amin A H Nada M Shams-Eldin O Salama

Myrrh has long been used for its circulatory, disinfectant, analgesic, antirheumatic, antidiabetic, and schistosomicidal properties. Myrrh essential oil (MEO) was extracted from the oleo-gum resin of Commiphora molmol and formulated into emulsions and suppositories to mask/avoid its bitter taste. Three oil-in-water emulsions (E1-E3) were formulated and taste was evaluated by 10 volunteers. Part...

2011
Komal R. Parmar Sunny R. Shah Navin R. Sheth

The aim of this investigation was to improve the dissolution properties of the water-insoluble drug ezetimibe (EZE) and potentially improve bioavailability. A combination of melt and adsorption techniques was employed for the preparation of solid dispersions. PEG 4000, PEG 6000, and Gelucire 44/14 were used as hydrophilic carriers, and lactose monohydrate was used as an adsorbent. Phase solubil...

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