نتایج جستجو برای: cross linking agent
تعداد نتایج: 781118 فیلتر نتایج به سال:
A chrome gel system with 13 million molecular weight and 19 polymer DQ-8 cross-linking agent is dynamically gelled under different conditions of 50-mesh 100-mesh screens shear rates. Concentration limit. The experiment shows that the critical concentration gelation 500-700mg/L, new in 80mg/L-90mg/L. cross-linker cut by steel mesh. post-gelation time prolonged. Between 6h-10h, after 12 days test...
Introduction: One of the surgeries that needs to be considered after pain and discomfort is corneal cross-linking of the cornea. The aim of this study was to compare the effect of indomethacin and acetaminophen oral surgery before surgery on postoperative pain in the patients undergoing collagen cross-linking surgery. Methods: The present study was a double-blind clinical trial study that was ...
In this work, we refer to the fraction of hydrides and vinyl groups consumed in cross-linking reaction as a variation properties poly(dimethylsiloxane) (PDMS) with varying formulation curing agent from 3.2 wt % 50 %. Young's modulus, density, refractive indices PDMS were observed have maxima at about 10 cross linker. The intensity Raman band for Si?H stretching mode cross-linker is almost zero ...
Background: Immobilization is an approach in industry to improve stability and reusability of urease. The efficiency of this technique depends on the type of membrane and the method of stabilization. Methods: The PEI-modified egg shell membrane was used to immobilize urease by absorption and glutaraldehyde cross-linking methods. The membranes were characterized by Fourier-transform infrared sp...
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