屏障

Calculations of diffracted attenuation are important for acoustic design of railway noise barriers.

铁路声屏障绕射衰减计算是声屏障声学设计的重要内容。

They have in effect internalized a set of barriers, which they erect and which others are supposed to recognize.

结果，他们将一系列的屏障内在化。他们建立起这些屏障，同时认为别人都应该知道。

All C.neoformans contain serine protease; Serine proteinase perturbs the integrity of BMEC of the blood-brain barrier, improves open the level of BBB; Secreted serine protease from pathogenic fungi were virulence.

发现新生隐球菌分泌具有活性的胞外蛋白水解酶并含有丝氨酸蛋白酶成分；新生隐球菌自身分泌的丝氨酸蛋白酶可以干扰构成血脑屏障主要成分内皮细胞的完整性使得血脑屏障开放程度提高；致病性真菌分泌的丝氨酸蛋白酶可能是一种毒性因子。

The primary function of reactor protection system is to protect the integrity of the three nuclear safety barriers, namely, fuel cladding, primary pressure boundary and containment. When the certain safety limits, determined by the accident studies, are exceeded, The reactor protection system will give the protection signals of reactor trip and/or safeguard actuations, and then the reactor trip system and/or the engineered safety features are actuated.

反应堆保护系统的功能主要是保护三道核安全屏障(燃料包壳、一回路压力边界和安全壳)的完整性，当运行参数达到危及三道屏障完整性的阈值时，保护系统动作触发反应堆紧急停堆和启动专设安全设施。

ABSTRACT:OBJECTIVETo investigate the relationship between abnormal metabolism of thyroxin and injury of intestinal barrier, and observe the protective effects of exogenous thyroxin for intestinal barrier function in rats.

［目的］探讨重症急性胰腺炎时甲状腺激素的代谢异常与肠黏膜屏障损伤之间的关系，观察外源性甲状腺激素对肠黏膜屏障的保护作用。

ABSTRACT:OBJECTIVETo investigate the relationship between abnormal metabolism of thyroxin and injury of intestinal barrier, and observe the protective effects of exogenous thyroxin for intestinal barrier function in rats.

探讨重症急性胰腺炎时甲状腺激素的代谢异常与肠黏膜屏障损伤之间的关系，观察外源性甲状腺激素对肠黏膜屏障的保护作用。

METHDOS: Pulp cavity perforations were created in the pulpal floor of 55 extracted tooth. They were repaired with amalgam、flowable resin、Chinese gall compound recipe under amalgam、Chinese gall compound recipe under resin and MTA. Then the sealing ability of different materials by dye penetration were evaluated.

在55个离体牙上制造髓室底穿孔模型后，分别用银汞合金、复合树脂、复方五倍子作屏障银汞合金修复、复方五倍子作屏障复合树脂修复及MTAMTA组）修复，通过染料渗漏法测定各组渗漏情况。

To date, all stroke clinical trials targeting glutamate receptors have failed, largely because of their side effects, an inefficient delivery of compounds from the blood to the brain or the length of time it takes for the drugs to work effectively.

迄今为止，所有关于中风的谷氨酸受体方面的研究都以失败告终，很大程度是由于副作用的原因，药物不易透过血脑屏障以及过血脑屏障所需时间都会影响药效。

Presents the concept of heat barrier, and analyses its formation and some characteristics including irregular shape, dynamic changes and potential harmfulness.

提出了土壤换热中热屏障的概念，并分析了热屏障的形成原因及其特性，即形状不规则、动态变化和危害性。

DEX inhibited the permeability of BTB,but not inhibited the increase of BTB permeability induced by BK.

地塞米松降低血肿瘤屏障通透性，但未抑制缓激肽诱导的血肿瘤屏障通透性增加。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。