纖維的多孔性 的英文怎麼說
中文拼音 [xiānwéideduōkǒngxìng]
纖維的多孔性
英文
fiber porosity-
Poly ( vinylidene fluoride ) ( pvdf ) hollow - fiber porous membranes have excellent performances. but adsorption fouling will still be created on the hydrophobic surface when the membranes are used in aqueous solution separation systems. this can cause the decrease of the permeate flux and separation efficiency, thus the applications of the membranes are limited
聚偏氟乙烯（ pvdf ）中空纖維多孔膜具有優良的性能，然而由於其表面的疏水性，在用於水相體系分離時，仍會產生吸附污染，導致膜通量和分離效率下降，應用范圍受到限制。Cell adhesion to surface of the substrate is essential to development of the anchorage - dependent cells. only after adhering to surface followed by spreading can cells develop and proliferate. most synthetic polymers used as orthopaedic matrix substitute present hydrophobicity, which may correlates to the low degree of cell attachment. modification with cell adhesion protein / peptides can be benificial to the cell adhesion on polymers and then affect the cell proliferation and differentiation. cell attachment to substrate is primarily mediated by integrins, a widely expressed family of heterodimeric surface receptors. most extrcellular matrix proteins such as fibronectin, osteopontin, collagen type i, bone sialoprotein and vitronectin contain an arg - gly - asp ( rgd ) sequence which is specific to the fixation of cell membrane receptors like integrin. the main aim of this research is to measure, assess adhesion, proliferation of rabbit marrow stromal cells ( mscs ) on the polymers coated by fibronectin, collagen type i or biotie gen, which includes : ( 1 ) biologic characteristics of rabbit mscs were observed by two types of separating method in primary culture. ( 2 ) adhesion, proliferation and differentiation of mscs cultured on polymers coated with biotiegen were assessed. ( 3 ) also, adhesion, proliferation and differentiation of mscs were assessed on plga film or porous plga substrates coated with fibronectin, or collagen type i respectively. ( 4 ) bone formation was observed on the porous plga substrates coated with collagen type i in vivo. this research aims to give new way to make novel synthetic bone with cell adhesion and high bone induction capabilities
因此將這些蛋白包被、固定到材料表面，觀察骨組織工程種子細胞mscs細胞的粘附、生長特性是本研究的中心環節，並從以下方面進行探討： （ 1 ）採用不同原代細胞分離方法，研究其對mscs細胞的生物學特性影響。 （ 2 ）檢測基因勝肽膠對mscs細胞粘附、增殖及分化的影響。 （ 3 ）分別採用型膠原及纖維粘連蛋白（ fibronectin ， fn ）包被聚乙醇酸-乳酸共聚物（ poly （ 1actide - co - glycolide ） ， plga ）膜及多孔塊型plga材料，觀察細胞在單層或三維培養狀態下，型膠原及fn對mscs細胞粘附、增殖及向成骨細胞分化效應及能力。The gross appearance, as seen here in a patient with organizing diffuse alveolar damage, is known as " honeycomb " lung because of the appearance of the irregular air spaces between bands of dense fibrous connective tissue
如圖正在機化的彌漫性肺泡損傷病人，外觀是典型的蜂窩肺，因在不規則緻密纖維結締組織間有較多含氣孔而得名。In this dissertation, cellulose acetate was selected as immobilization carrier for cod and the ca membrane was prepared by pump means and salt leaching, the catalytic activity of immobilized cod based in the membrane and some external factors, such as characteristic of membrane, immobilization condition and reaction condition were detailed studied
論文改進了醋酸纖維素的制備方法，採用鹽析法制備了多孔性ca薄膜，對ca薄膜固定cod的催化特性進行了詳細的研究，分析了薄膜特性、固定條件和反應條件等因素對酶膜活性的影響。Regarding the lcm filling process as the newton fluid through fibrous reinforcements, the permeability of preform determines the saturating of resin in fiber, and has effects on the curing process and the quality of products. based on the darcy ' s law, the theoretical model of permeability measurement was established. and the influence of different testing methods and major process parameters such as fabric structure, fiber volume fraction, injection pressure, flow rate and resin viscosity on preform permeability were investigated in details
文中首先根據達西定律建立了滲透率測量的理論模型，深入研究了不同的測試方法及主要工藝參數（纖維織物織構、纖維體積含量、充模壓力、流動速度、樹脂粘度）對滲透特性的影響規律，發現多孔介質增強材料的滲透率主要取決于纖維織物的結構形式，預成型體孔隙分佈及其體積分數、壓實性對滲透率有較大的影響，提高充模壓力和流動速度可以縮短充模時間，在一定程度上可以提高滲透率。Kenyon cells are not labeled. in the back of the protocerebrum, there are two groups ( about 20 ) of large positive neurons whose axons often run in bundles, some thin branches of which invade a large area of the protocerebrum
在前腦后側，靠近蕈形體冠的下方，有對稱分佈的兩組大的抗原細胞，在食道孔上方形成許多纖維束並且分枝向側前腦，前腦下方擴展，形成大量的陽性纖維。分享友人