نتایج جستجو برای: پلیمریزاسیون raft
تعداد نتایج: 7003 فیلتر نتایج به سال:
زمینه و هدف: انقباض پلیمریزاسیون کامپوزیت های با بیس متاکریلات یکی از مهم ترین عوامل در شکست ترمیم های کامپوزیت می باشد. برای برطرف کردن این نقیصه، کامپوزیت های با بیس سیلوران معرفی شده اند. ادعا شده است که این کامپوزیت ها دارای حداقل انقباض می باشند. هدف از این مطالعه بررسی میزان انقباض پلیمریزاسیون این دو نوع کامپوزیت بود.
Poli(4-vinilbenzil-g-stiren) Aşı Kopolimerinin RAFT Ve FRP Yöntemleriyle Sentezi Ve Karakterizasyonu
Poli(4-vinilbenzil-g-stiren) [poli(VB-g-S)] aşı kopolimeri tersinir katılmalı/ayrışmalı zincir transfer (RAFT) ve serbest radikal polimerizasyon (FRP) teknikleri kullanılarak sentez edildi. Bu amaç için, 4-vinilbenzil klorür monomeri FRP yöntemiyle poli(4-vinilbenzil klorür) [poli-4-VBC] polimeri sentezlendi. İkinci aşamada, poli-4-VBC ile potasyum etil ksantat reaksiyona sokularak makro-RAFT a...
Research to reliably predict the seismic response of nuclear power stations with a pile-raft foundation is needed meet high safety requirements stations. In this study, scaled superstructure 4×3 foundation, which constructed in Shanxi kaolin clay, modelled. Accordingly, characteristics for are analyzed using dynamic centrifuge tests. particular, multiple earthquake motions different magnitudes ...
BACKGROUND/AIMS Trafficking, brush border membrane (BBM) retention, and signal-specific regulation of the Na+/H+ exchanger NHE3 is regulated by the Na+/H+ Exchanger Regulatory Factor (NHERF) family of PDZ-adaptor proteins, which enable the formation of multiprotein complexes. It is unclear, however, what determines signal specificity of these NHERFs. Thus, we studied the association of NHE3, NH...
Reversible addition-fragmentation chain transfer (RAFT) polymerization is one of the most common controlled techniques to prepare well-defined, rather narrow dispersed polymers due reduced demands in reactant preparation. Despite these advantages, RAFT was so far primarily utilized on small laboratory scales. This study presents a first step scaled-up by developing and experimentally validating...
Using aqueous emulsion as the medium in radiation-induced graft polymerization (RIGP) offers an environment-friendly shift from organic solvents while increasing efficiency through known water radiolysis-based initiation. In present paper, we further extend applicability of RIGP under influence reversible addition fragmentation chain transfer (RAFT) mechanisms. Emulsions prepared with Tween 20 ...
To better understand the characteristics of seismic response nuclear power stations with fixed-base and pile-raft foundations, a series shaking table tests were performed. The included three cases: free-field soil, structure without superstructure foundation embedded in soil. One white noise excitation earthquake motions different intensity selected as ground motion to identify structure, raft,...
During the past decade, the lipid-raft hypothesis has focused attention on the role of membrane domains in controlling cellular functions. Among the best-studied roles of lipid rafts is the regulation of T-cell signalling. In particular, a model has emerged in which lipid rafts regulate protein-protein interactions during signalling in a cholesterol-dependent manner. Does this model provide the...
We examined the distribution of selected raft proteins on the sarcolemma of skeletal myofibers and the role of cholesterol environment in the distribution. Immunofluorescence staining showed that flotillin-1 and influenza hemagglutinin exhibited rafts that located in the domains deficient of the dystrophin glycoprotein complex, but the distribution patterns of the two proteins were different. C...
BACKGROUND Although tissue perfusion is often decreased in patients with sepsis, the relationship between macrohemodynamics and microcirculatory blood flow is poorly understood. We hypothesized that alterations in retinal blood flow visualized by angiography may be related to macrohemodynamics, inflammatory mediators, and retinal microcirculatory changes. METHODS Retinal fluorescein angiograp...
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