نتایج جستجو برای: polymer urea
تعداد نتایج: 130317 فیلتر نتایج به سال:
abstract in this study, we synthesized a novel template polymer by using methacrylic acid (mma) as functional monomer, ethylene glycol dimethacrylate(egdma) as cross linker, 2,2-azobisisobutyronitrile (aibn) as initiator and olanzapine as targeted molecule in the presence of chloroform and acetonitrile as solvent. the products have been characterized and confirmed by (chn)elemental analysis,...
Urea removal is one of the biggest challenges in dialysate regeneration Wearable Artificial Kidney (WAK) devices. In this work, a new Mixed Matrix Membrane (MMM) developed for urea WAK applications. The MMM consists polystyrene-based ninhydrin particles within polyethersulfone/polyvinylpyrrolidone polymer blend matrix. prepared via dry-wet spinning technique and characterized terms its morpholo...
A pyridine and thioether co-supported triazole ligand L (L = 2-((4-(3-(cyclopentylthio)propyl) -1H-1,2,3-triazol-1-yl)methyl)pyridine) has been synthesized using the CuAAC click reaction. This ligand supports the formation of a thermally stable, one-dimensional coordination polymer [L2Ag4]n·4n(BF4) (1) possessing a cationic polymeric structure with [Ag4] metallomacrocycles, in which the ligand ...
The present study describes two different methods for the preparation of superabsorbent polyacrylamide (PAAm) hydrogels for application in farming of sandy soil. The two methods were employed to induce the crosslinking of the polymer matrix. In the first method a PAAm paste was exposed to gamma rays, while in the second method the polymer was thermally treated in the solid phase. Crosslinked PA...
lactatingdairy cows (n=177) fed with grass and corn silage ad libitum kept in pasture, were randomly assigned to evaluate how urea nitrogen in plasma and milk can be related to their pregnancy rate. blood and milk samples were collected on the artificial insemination (ai) day to evaluate plasma urea nitrogen (pun) and milk urea nitrogen (mun) as well as progesterone levels, excluding cows with ...
419 Mention of product names is for the convenience of the reader and implies no endorsement on the part of the authors or the USDA. Soil Sci. Soc. Am. J. 74:419–428 Published online 8 Jan. 2010 doi:10.2136/sssaj2009.0126 Received 26 Mar. 2009. *Corresponding author ([email protected]). © Soil Science Society of America, 677 S. Segoe Rd., Madison WI 53711 USA All rights reserved. No par...
Polymeric biomaterials used for applications such as coronary and vascular bypass grafting have demonstrated poor patency due to their surface thrombogenicity, initiation of chronic inflammation and unfavourable host tissue responses. The aim of this thesis has been to develop a peptide which would demonstrate an inhibitory effect on blood coagulation and/or improved endothelial cell adhesion. ...
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