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In this article, we have been investigated that synthesizing and properties of shape memory polyurethane. The shape memory polyurethane was synthesized from PCL diol, MDI(4, 4'-diphenylmethane diisocyanate) and BDO (1,4-butanediol) in this experiment. We analyzed that the effect of differential mole ratio of monomers to synthesized SMPU. Besides, the various concentrations of Nano-silver were mixed with SMPU. Mechanical properties and shape memory behavior of SMPU nanocomposite films were investigated.

本研究目的为藉由改变4,4'-二苯甲基二异氰酸盐(4,4'-diphenylmethane diisocyanate, MDI)/聚己内酯二元醇(polycaprolactone diol, PCL diol)/1,4-丁二醇(1,4-butanediol, BDO)等不同莫耳比制备形状记忆型聚氨基甲酸酯(Shape Memory Polyurethane, SMPU);并探讨改变不同单体莫耳比及添加不同浓度奈米银溶液对其物性及形状记忆性的影响。

However, as a result of human activity especially moorland is reclaimed, the aggravate that uses favourable geographical position waiting for earth of chemical fertilizer to use an activity in great quantities, and large-scale disafforest and habitat are broken the change that spends favourable geographical position waiting for earth to use structure, played havoc with natural landscape, the change moves floral to live environment, make ecosystem function degrades, brought about the forfeiture of biology diversity finally.

然而,由于人类活动尤其是荒地开垦、化肥的大量使用等土地利用活动的加剧,以及大规模砍伐森林和栖息地破碎化等土地利用格局的改变,严重破坏了自然景观,改变动植物的生存环境,使生态系统功能退化,并最终导致了生物多样性的丧失。

This can change depending on the season or the game, but as a rule I don't make a habit of disliking other teams.

这会随着时间和比赛的改变改变的,但是我并没有讨厌其他球队的习惯。

It might be the OC's composition, regardless of its seerity, so the changes of OCs spectrum are noteworthy between healthy subjects and asthmatics and less eident between seere and mild asthmatics.

因此,哮喘患者和正常人OCs谱的改变显著,重度和中度哮喘的改变不明显。

Camshaftless valve actuation includes electromagnetic,electrohydraulic,electropneumatic and electromechanical types.it could vary valve timing agilely,simplify the engine's structure,deactivate some of the engine's cylinders selectively and vary the effective compression ratio flexibly to adapt different fuels.So it could offer more advantages than general variable valve timing.

阐述了在发动机上以电磁、电液、电气或其他方式驱动气门,实现无凸轮轴气门驱动,可以灵活改变气门正时,简化发动机结构,能有选择地闭缸,灵活改变发动机有效压缩比以适应多种燃料要求,使发动机获得比采用一般可变气门驱动更多的好处。

Expression of nNOS mRNA, eNOS mRNA and iNOS mRNA in the E 20 cerebral cortex: There were no obvious changes of expression of nNOS mRNA in ETU-injected and control groups. Expression of eNOS mRNA increased significantly in cerebral cortex of the encephalocoele group, And there were no obvious changes of expression of eNOS mRNA in cerebral cortex of the control group and the other ETU-injection groups.

六、不同组E20胎鼠大脑皮质中nNOS mRNA、eNOS mRNA和iNOS mRNA的表达 1、实时定量PCR检测发现对照组、给药无畸形组、脊柱裂组和脑膨出组E20胎鼠大脑皮质中nNOS mRNA表达无明显改变; 2、给药无畸形组、脊柱裂组和对照组胎鼠大脑皮质中eNOSmRNA表达无明显改变,而脑膨出组胎鼠大脑皮质中eNOS mRNA表达明显增多; 3、在各组未检测到iNOSmRNA表达。

It is currently considered that HDCP origins from the patho-physio changes of placenta,this kind of changes can further lead to the damage and disfunction of blood vessel endotheliocyte,and consequently,cause a serial of symptoms.

目前认为HDCP的发病起源于胎盘的病理生理改变,此改变进一步导致全身血管内皮细胞损伤和功能异常,从而引起一系列HDCP的临床症状。

Because acrylon macrololecules a enterokinesia, with the temperature rising aggravated, it is very sensitive to temperature, that is, enterokinesia is with the temperature changes.

因为腈纶不小不合子链段的蠢动,随着温度降低而增剧,它差温度出格敏锐,也不离是说,蠢动是随着温度的改变改变

The big difference between these two alternatie ways that tumour cells use to inactiate tumour suppressor genes is that, while the reersal of genetic alterations is technically almost unfeasible in clinical scenarios, the function of these epigenetically inactiated suppressor genes is easily reactiated by pharmacological means.

这两种改变方式最大的不同之处在于肿瘤细胞利用失活的肿瘤抑制基因,而在同时相反的遗传学改变在临床方案上是很难实施的技术。

Objective To examine the value of Edaravone in the treatment of vascular dementia through ethologic and pathologic changes induced by chronic cerebral ischemiaMethods Wistar rats were randomly divided into sham operated group,model group,edaravone group and duxil groupThe chronic cerebral hypoperfusion models were made by permanent bilateral occlusion of both common carotid arteriesThe memory ability and ultramicrostructure of brain tissue were observedResults The escape latencies in model group were more significantly prolonged than that in the other groups (P<005)But there was no significant difference between edaravone and duxil groupAnd pathologic changes observed by electron microscope in nerve cell of edaravone group and duxil group and model group were fairly light than that in sham operated groupEdaravone group had increased mitochondrium and frontal membranous synaptic vesicle and more productive metabolic activityConclusions Edaravone can lessen injures of hippocampal neurons loss to improve the spatial learning and memory abilitiesAnd it is proved further that edaravone can treat VD

目的 观察依达拉奉对慢性缺血致血管性痴呆大鼠行为学及形态学的影响,探讨依达拉奉在治疗VD中的应用价值。方法实验分假手术组、模型组及都可喜对照组及依达拉奉治疗组,应用双侧颈总动脉结扎方法制备慢性脑缺血大鼠痴呆模型,观察各组大鼠的记忆功能及脑组织超微结构改变。结果缺血组水迷宫表现同对照组、都可喜组及依达拉奉组相比有显著差异(P<005),依达拉奉组与都可喜组相比未见显著差异。同时电镜观察结果也发现依达拉奉组及都可喜组与模型组及假手术组相比神经细胞病理改变较轻,且依达拉奉组线粒体及前膜突触小泡增多,代谢活动较都可喜组旺盛。结论依达拉奉可能通过减轻海马神经元的损伤来改善慢性脑缺血大鼠空间学习记忆障碍,证明依达拉奉对慢性缺血致VD大鼠具有治疗作用。

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I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像,后来回台湾,甚至去年在北京,居然也四处看见她的海报,才惊讶她的魅力之大。

Ah may dee:You are chinese living in a democratic country.

你是居住在民主国家的中国人吧。