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OBJECTIVE: To study the effects of prolonged 75% oxygen exposure on the expression of vascular endothelial growth factor and its receptors (VEGFR1 and VEGFR2) in the neonatal rat lungs and to elucidate the effects of prolonged exposure of high concentration of oxygen on lung vascular development and its relationship with bronchopulmonary dysplasia.

目的：研究持续吸入75%氧对新生大鼠肺血管内皮生长因子（vascular endothelial growth factor，VEGF）及其受体（VEGFR1和VEGFR2）表达的影响，探讨较高浓度吸氧对肺血管发育的影响及与支气管肺发育不良（bronchopulmonary dysplasia，BPD）的关系。

objective to elucidate the choice of three defferent ways as well as the clinical efficacy in the treatment of pilon fracture and different damages of skin and tissue.methods 29 cases were treated with calcaneum bone traction and small splinting,23 cases were treated with internal fixation,11 cases were treated with external fixation of ilizarov.results all cases were followed up for 8～31 months (15.3 months average).according to helfet criterion,the results were evaluated as the total excellent and good outcome accounted for 90.5％.conclusion the key point of treatment is rational selection of three defferent ways in the treatment of pilon fracture according to the typle of pilon fracture and different damages of skin and tissue.

目的 探讨pilon骨折的三种不同治疗方法临床适应证及其疗效评价。方法对2000年2月至2006年3月间治疗的63 例pilon骨折患者进行回顾性分析。其中开放性损伤15 例，闭合性损伤48 例。根据骨折类型与周围软组织损伤程度，分别采用三种不同治疗方法：跟骨牵引加小夹板固定组(29 例)均为闭合性骨折，内固定组(23 例)，外固定器组(11 例)。结果所有患者均获得随访，随访8～31个月(平均15.3个月)，骨愈合时间8～14周，平均10周。按helfet疗效评价标准，本组优良者57 例(90.5％)，其中ⅰ型骨折优良者26 例，ⅱ型骨折优良者15 例，ⅲ型骨折优良者16 例。

This dissertation studied the overcompensatory responses of cotton,Gossipium hirsutum L. plants to leaf loss, square loss and cell sap lossand the changes in some physiological and biochemical contents with timein the case of overcompensation. The artificial defoliation, early squareremoval and aphis colonization were used as three types of simulated ornatural herbivory. The target of this study is to elucidate thephysiological mechanism of cotton plant overcompensation for insectherbivory.

本文以棉花为实验材料，采用人工去除棉花一部分叶片、花蕾及接种棉蚜的方法，分别模拟昆虫食叶、食蕾及吸汁为害等三种为害方式，研究棉花对于失叶、失蕾及损失细胞汁液所产生的超补偿作用，及一些生理生化代谢随棉花发育时间进程变化的情形，以期较为系统地从多个方面阐明棉花对于虫害超补偿作用的生理学机制。

Objective To elucidate the differences of the clinical symptoms and laboratory tests of epidemic cerebrospinal meningitis between in 2001 and 2002 in Peking region.

目的 探讨北京地区2002年与2001年流行性脑脊髓膜炎在临床及实验室检查等方面的差异。

In an effort to elucidate the mechanisms of the resistance,our laboratory has previously identified and reported a number of genes associated with resistance to a widely used pyrethroid deltamethrin,including a Culex chymotrypsin gene.

为阐明媒介昆虫对拟除虫菊酯的抗性机制，本实验室先前已经鉴别并报道了一系列拟除虫菊酯代表种溴氰菊酯抗性相关基因，其中包括糜蛋白酶基因。

Objective To elucidate the inhibitory action of interferon alpha-2b (IFN α-2b) on the cicatrization under conjunctiva and the best way to use it after glaucoma filtration surgery.

目的 探讨干扰素α-2b (interferon alpha-2b，IFNα- 2b)对结膜下瘢痕形成的抑制作用机理和青光眼滤过术后的应用方式。

Objective: Elucidate the medicinal licorice species circumscription in order to develop licorice resources in China and select new cultivars.

目的：阐明中国药用甘草物种之间的界限，为甘草资源开发和优良品种选育奠定基础。

To elucidate the mechanisms of neurogenic intermittent claudication in lumbar spinal canal stenosis.

目的：阐明腰椎管狭窄症中神经原性间歇性跛行的机制。

Sergiovanni elucidate, also caused our country academia to comparative the attention of degree.

Sergiovanni阐发之后，也引起了我国学界相当程度的关注。

Objective To elucidate the effect of febrile convulsions on memory ability and its relationship to hippocampal mossy fiber sprouting.

目的 观察热性惊厥对学习记忆的影响及其与海马苔藓纤维发芽的关系。

Life. But the intrinsic way of the Internet by wire confines accessing and using of the network information.

然而，Internet固有的有线连接方式大大限制了人们对网络信息的访问和使用。

I have a strong persuasion that this is true .

我坚信这是正确的。