Homogeneous cytosolic pyruvate kinase from endosperm of germinating castor oil (Ricinus communis L. cv Hale) seeds was potently activated by polyethylene glycol. The addition of 5% (w/v) polyethylene glycol to the pyruvate kinase reaction mixture caused a 2.6-fold increase in maximal velocity and 12.5- and 2-fold reductions in Km values for phosphoenolpyruvate and ADP, respectively. Glycerol, e...

Leuconostoc mesenteroides NRRL B-1149 produces extracellular dextransucrase which in this study was purified using different concentrations of polyethylene glycol (PEG). The dextran produced by this enzyme is unique in that it contains α(16) and α-(13) linkages which have clinical applications. The cell free supernatant with 0.9 U/mg enzyme specific activity was subjected to fractionation by ...

background: nowadays colonoscopy has a very important role in screening colorectal cancers. in addition, adequate bowel preparation is critical to colonoscopy, as a poor preparation may obscure pathology or prevent full colonoscopy. as it is estimated that unsuccessful colonoscopy leads to second procedures in up to 20% of patients, we sought to compare the effects of different doses of polyeth...

background: fusion of dendritic cells (dcs) with melanoma cells could reinforce the antigenicity of tumors as a strategy for the treatment of malignant melanoma. however, the insufficient quantity of dcs and the low fusion efficiency limits the development of such approach. objective: to define the dosage of the stimulating factors as well as the induction condition for the optimal dcs preparat...

The effects caused upon the physicochemical behavior of high-density polyethylene pipes by exposure to a diesel lubricant were investigated, as a function of time and temperature, by thermogravimetric and gravimetric analysis and by FTIR. The gravimetric data were satisfactorily described using Fick’s law. The fitting of the experimental points showed that diesel, which can be regarded as a mod...

The stability of Δ9‒tetrahydrocannabinol acetate (Δ9‒THC‒OAc) and Δ8‒tetrahydrocannabinol (Δ8‒THC‒OAc) in e-liquid during storage was investigated. Δ9‒THC‒OAc liquids cartridges were stored at 80℃ or 30℃ for 28 days. relative concentrations cannabinoids the measured by gas chromatography with flame ionization detection. decreased either temperature. Δ9‒THC, a minor impurity, also decreased. Δ8‒...

Polyethylene glycol was easily grafted to silica gel and used as a solid–liquid phase transfer catalyst in the reduction of aromatic nitro compounds. This silica-grafted polyethylene glycol is proved to be an efficient heterogeneous catalyst in the reduction of nitroarenes to the corresponding aromatic amines with zinc powder in water. The reduction reactions proceeded efficiently with exce...

Large volumes of Japanese encephalitis (JE) virus propagated in mouse brain can be easily purified by polyethylene glycol 6,000. By using the polyethylene glycol precipitation method, mouse hemoglobin was almost all separated from the viral suspension, and consequently the total amount of nonviral protein in the viral suspension decreased. The recovery of infectivity was about 100%. The removal...

to determine the effects of priming and planting density on improvement of morphological and physiological traits of the two hybrid corns sc (s.c. 704) under double cropping in sari, a split plot experiment as randomized complete block design with four replications was conducted in 2010. treatments included two densities of 80 and 100 thousand plants per hectare as the first factor and osmoprim...

In this article, we study on the effect of different congregated granularities of microencapsulated n-octadecane on polyurethane foamed system, and the making of the polyurethane foams with high contents of microencapsulated n-octadecane. The results show that, when relative low granularities of microencapsulated phase change materials (MicroPCMs) are used as additives, the remnant water and fo...