查询词典 membranes

Specifically, itcontains 8 chapters.In chapter 1, the formation, structures, properties and the futureprospect of liposome were thoroughly reviewed;In chapter 2, the stibility and permeability of phopholipid -eleostericacid liposome were studied together with the effect of polymerizationof eleostearic acid. This membrane system was very sensitive to 〓,the effect of 〓 was clarified to increase the aggregation/fusion ofliposomes and made the permeability of mixed liposomes much higher;In chapter 3, two polymerizable conjugated diyne bolaamphiphiles were synthesized. They could form very stable mixed liposome, andthe diyne could be polymerized by UV light in bilayer liposomes, as aresult, the stability of mixed liposome against solvent or surfactantafter polymerization were enhanced. In chapter 4, two kinds of amphiphilic amino acids were synthesized andstable liposomes were formed therefrom After the condensationpolymerization of amino acid in bilayer liposomes, stable polypeptide liposomes were obtained, which had lower phase transition temperatureand higher permeability.In chapter 5, four kinds of glycolipids were synthesized and theiraggregation behavior in water was comparied. When incorporated intophospholipid bilayer membranes, they could increase the phase transitiontemperatures and inhibit the aggregation and fusion of mixedliposomesat lower temperature.In chapter 6 and 7, three kinds of steroidal bolaamphiphiles withdifferent chain lengths were synthesized. Incorporation of steroidalmoiety to the center of lipid bilayer membrane obviously increased themobility of lipid membrane and shifted Tc to lower temperature side incomparasion with cholesterol. The bolaamphiphile which was shorter thanthe hosted lipid bilayer membrane thickness influenced the lipid packingmore obviously.

全文共分8章：第一章对脂质体的形成、结构、性质及展望进行了较为详细的文献综述；第二章研究了磷脂-桐酸脂质体的稳定性，通透能力及桐酸的聚合对这些性质的影响；磷脂-桐酸混合脂质体为一类对〓灵敏的脂质体，〓的作用首先是使脂质体集聚然后使脂质体融合，并加速内包荧光物的释放；第三章通过合成两种可聚合共轭双炔双极性双亲分子DDCA，DDOL，研究了共双炔分子在双分子层脂质体膜上的聚合及对脂质体性质的影响，聚合可以提高脂质体相对于溶剂及表面活性剂的稳定性；第四章合成了两类氨基酸为极性基团的双亲分子，它们均可以在超声下形成稳定的脂质体结构；氨基酸基团可以在脂质体上进行缩聚反应，若聚合后脂质体表面仍有足够的亲水能力，则可得到稳定的多肽型脂质体；聚合后脂质体的相变温度降低，通透能力增加；第五章合成了四种亲水基团为单糖基的双亲分子GL-l，GL-2，GL-3， GL-4，研究了它们在水中的分散情况、集合体形态与分子结构的关系；在DMPC双分子层膜中加入糖脂分子可以使脂质体的相变温度提高，阻止脂质体在低温放置时的集聚与融合；第六章-第七章合成了三种不同碳链长度的双极性含胆甾环双亲分子 CL-1，CL-2，CL-3；它们可以象胆固醇一样与磷脂混合形成稳定脂质体，胆甾环基团位于脂质体双分子层膜的中间；与胆固醇的作用相反，它们可以增加磷脂双分子层膜的流动性，降低混合脂质体的相变温度；三种分子的作用与其碳链长度和磷脂双分子层膜的厚度有关，比膜厚度短的分子影响最大。

Amniotic fluid may gain access to uterine veins following a tear in the placental membranes and embolize to the lungs, producing acute dyspnea with cyanosis and shock.

羊水通过羊膜的破裂口进入子宫静脉栓塞到肺，引起急性呼吸困难，伴面色苍白和休克。

Results: The main causes were retained placenta and membranes, endometritis and decidualitis, infection, dehiscence and hemorrhage of caesarean incision ,sub involution of uterus.

结果：主要病因依次为胎盘、胎膜残留，子宫内膜炎和蜕膜炎，剖宫产术的子宫切口感染、裂开出血以及子宫复旧不良等。

Results: The main causes were retained placenta and membranes, endometritis and decidualitis, infection, dehiscence and hemorrhage of caesarean incision ,sub involution of uterus.

结果：主要病因依次胎盘、胎膜残留，子宫内膜炎和蜕膜炎，剖宫产术的子宫切口感染、裂开出血以及子宫复旧不良等。

Overall, in responses of plant plasma membranes to stresses, adaptive responses were usually observed under gradual stresses, whereas excitive responses usually happened under abrupt experimental stresses.

总之，与实验室人为短期而剧烈的胁迫下植物发生的应激性反应不同，在缓慢胁迫下，植物细胞质膜的响应更多地表现为适应性反应。

AIM: To investigate the efficacy of recombinant tissue plasminogen activator for treatment of fibrinous membranes following cataract surgery.

目的：研究重组组织型纤维蛋白酶原激活剂对于治疗白内障手术后的纤维蛋白膜的作用。

RESULTS: Injection of the solution of tissue plasminogen activator into anterior chamber of 15 eyes resulted in complete dissolution of the fibrinous membranes in 9 (60.0﹪)eyes after 2 hours, and 11 (73.3﹪) eyes within 1 day.

结果：在前房注射tPA的1 5眼中，其中9眼(60.0﹪)在2h后纤维蛋白膜完全溶解，11眼(73.3﹪)在1d内完全溶解。3眼内注射tPA几天后纤维蛋白膜复发。

The postoperative complications included moderate high intraocular pressure, temporary inflammatory reaction, lens opacity, fibrocellular membranes proliferation and heavy silicone oil emulsification.

术后主要并发症包括轻至中度的眼压升高、眼前段炎症反应、晶状体混浊、增殖膜形成和硅油乳化等。

With immature of structure and poor function, the newly formed blood vessels and proliferating fibrovascular membranes subsequentally result in macular edema and hemorrhage in the retina and vitreous, and exert traction on the retina which can finally be detached.

其基本病理过程是原发病造成的视网膜血管损伤和视网膜组织缺血，并可诱发视网膜新生血管生成。

The results indicate the membrane prepared in pure water coagulation bath exhibits fingerlike structure, with an increase of the volume fraction of ethanol in coagulation bath leads to a reduction of fingerlike cavities, and in ethanol/water coagulation bath of φ=40% exhibits spongelike structure; the melting points of the fingerlike and spongelike membrane increase by 3.9℃ and 3.5℃ compared to that of raw material respectively, and the crystallinity of the two type membranes increases by 16.1% and 13.5% respectively.

结果表明纯水凝胶浴中所成膜为指状多孔膜，随着凝胶浴乙醇体积分数的增加，膜指状大孔逐渐消失，在φ=40%的乙醇／水凝胶浴中转变为海绵状多孔膜；指状多孔膜和海绵状多孔膜熔点相对于原料分别提高了3.9℃和3.5℃，而结晶度相对于原料分别提高了16.1%和13.5%。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。