In the present study, a hydrophobic zeolite was used as an adsorbent for the adsorption of polyethylene glycol (PEG) in water solution and electroplating solution at 25 degrees C. The adsorption capacities were determined through the adsorption isotherms in a thermostated shaker. The rate of adsorption, on the other hand, was investigated in a batch adsorber under controlled process parameters ...

The present work investigates the feasibility of the design of an enteric coated microporous osmotic pump tablet (ECMOPT) to prolong the drug release of an antipsychotic drug, quetiapine fumarate (QTF). The ECMOPT consisted of an osmotic core coated with a microporous membrane (MPM) made up of cellulose acetate and PEG 4000 as in situ micropore former. The effect of formulation variables such a...

Polyethylene glycol (PEG) dehydrogenase in crude extracts of a PEG 20,000-utilizing mixed culture was purified 24 times by precipitation with ammonium sulfate, solubilization with laurylbetaine, and chromatography with diethylamino-ethyl-cellulose, hydroxylapatite, and Sephadex G-200. The purified enzyme was confirmed to be homogeneous by sodium dodecyl sulfate-polyacrylamide gel electrophoresi...

An artificial neural network (ANN) model is presented for the prediction of kinematic viscosity of binary mixtures of poly (ethylene glycol) (PEG) in water as a function of temperature, number-average molecular weight and mass fraction. Kinematic viscosities data of aqueous solutions for PEG (0.55419×10 – 9.875×10 m2/s) were obtained from the literature for a wide range of temperatures (277.15 ...

This work aimed to optimize the parameters affecting partitioning of a bacteriocin-like inhibitory substances (BLIS) from Lactococcus lactis Gh1 in extractive fermentation using polyethylene glycol (PEG)/dextran aqueous two-phase system (ATPS). was developed for simultaneous cell cultivation and downstream processing BLIS. Results showed that molecular weight PEG, PEG concentration, dextran T50...

UNLABELLED BACKGROUND Phosphorus-containing high performance polymers have aroused wide interest, mainly due to good mechanical properties and their excellent fire resistance. The flexibility of synthetic polyphosphoesters allows the development of polymers in order to obtain solid polymer electrolytes for rechargeable lithium batteries based on solid films with superior fire resistance. R...

Background: Danoprevir (RG7227) is an inhibitor of the HCV NS3/4A protease. In two Phase Ib studies of treatment-naive patients with chronic HCV genotype 1 infection, danoprevir administration for 14 days was associated with HCV RNA median reduction reaching 3.8 log10 in monotherapy and 5.7 log10 in combination therapy with pegylated interferon (PEG-IFN)-a2a (40 KD) plus ribavirin (RBV). After ...

Ag-TiO2@polyethylene glycol (PEG) nanoparticles were continuously obtained in a single-pass configuration by appropriately reacting freshly flame-synthesized TiO2 with Ag formed in an ultrasonic aqueous medium containing PEG. When the proposed synthesis was kept constant, the production rate for Ag-TiO2@PEG nanoparticles reached approximately 3 g/h while only using a combination of a lab-scale ...

Oxidative degradation characteristics of silica-supported amine sorbents with varying amounts of tetraethylenepentamine (TEPA) and polyethylene glycol (PEG; P(200) or P(600) represents PEG with molecular weights of 200 or 600) have been studied by IR and NMR spectroscopy. Thermal treatment of the sorbents and liquid TEPA at 100 °C for 12 h changed their color from white to yellow. The CO(2) cap...

BACKGROUND Morita Baylis Hillman (MBH) reaction is used to introduce carbon-carbon or carbon-heteroatom bond in a molecule. The major drawback of this reaction is the relatively low product yield and long reaction time. Though notable changes have been made to improve the reaction rate and yield of MBH adduct by various groups, a reliable synthetic procedure under ambient temperature in presenc...