屏障

In particular, I make the case that the love poems in McKay's Harlem Shadows (1922), the most influential early book of black poetic modernism, cannot communicate without being heard as meta-lyrics of the "lyrical left," the political edge of Village bohemianism that aimed to break down the barriers between contemplation and action, sexual and economic liberation, the artist's studio and the revolutionary barricades.

如若不将它作为"抒情左翼"的元抒情诗来听，难以得其要旨。所谓"抒情左翼"，是指格林威治村波希米亚主义的政治之锋，旨在打破凝思与行动之间的屏障、性解放与经济解放之间的屏障、艺术家工作室与革命者街垒之间的屏障。

The first is improving intestinal physical defensive barrier: restoring intestinal perviousness and altering intestinal micro-circumstance and activating generation of benefical bacteria; The second is improving intestinal immunity defensive barrier and eliminating inflammatory reaction.

益生菌治疗UC的机理，主要表现在两个方面：一方面是提高肠道非免疫防御屏障功能，包括恢复肠道黏膜通透性和改变肠道微生态环境，并激活内源性细菌的代谢；另一方面是提高肠道免疫防御屏障，通过改善肠道免疫防御屏障而消除肠道炎症反应。

We discovered that the mechanisms of borneol opening BBB involved (1) promoting the tight junction of endothelial cells opening:(2) increasing the quantity of pinocytosis vesicle in endothelial cells and enhance the pinocytosis;(3) inhibiting the activation of P-glycoprotein (P-glycoprotein is an efflux pump of drugs) and increase the permeability of BBB;(4) reducing the expression of intercellular adhesion molecule-1 in brain microvessel endothelial cells;(5) increasing the concentration of Ca〓 in brain microvessel endothelial cells;(6) increasing the activation of eNOS in brain microvessel endothelial cells.

随后，在对冰片开放血脑屏障的机制作进一步的研究时又发现，冰片开放血脑屏障的机制包括以下几个方面：(1)冰片可使血脑屏障内皮细胞间的紧密连接开放；(2)冰片能使内皮细胞内的囊泡数量增加，吞饮功能增强；(3)冰片能抑制P-糖蛋白的活性（P-糖蛋白是一种药物外排泵），而使血脑屏障的通透性增加；(4)冰片能使脑微血管内皮细胞ICAM-1表达量减少；(5)冰片使脑微血管内皮细胞内的Ca〓浓度升高；(6)冰片可升高脑微血管内皮细胞eNOS的活性。

Blood-Testis Barrier is the harrier between capillary vessel and seminiferous tubule which is important to produce sperm and maintain male procreation function.

血睾屏障是睾丸内毛细血管与精小管之间存在的屏障结构。血睾屏障对精子的正常发生及雄性生殖功能的维持具有重要的作用。

How to calculate diffracted attenuation accuratly in this case is the important part of sound barrier design.

公路上设置的声屏障的长度一般为有限长，如何准确的计算出此种情况下声屏障的绕射衰减，是声屏障声学设计的关键。

EN is mechanical to alvine mucous membrane the protective screen of machinery of mucous membrane of protective action bowel of protective screen is main by mucous membrane of the mucus layer of surface of alvine mucous membrane, bowel epithelial reach its the composition such as close connection.

肠内营养对肠屏障功能的维护机理是多方面的，EN制剂的种类对小肠功能的改善功能也不相同。1 EN对肠黏膜机械屏障的保护功能肠黏膜机械屏障主要由肠黏膜表面的黏液层、肠黏膜上皮细胞及其紧密连接等组成。

Function of 1 bowel protective screen and protective screen of its characteristic bowel include protective screen of alvine mucous membrane, chemical protective screen, biology protective screen and immune protective screen, its are main the function is to resist the bacterium inside alvine antrum and toxin enter system inside.

本文现就化疗药物对肠屏障功能的损伤机制及其防治进展作一综述。1肠屏障功能及其特征肠屏障包括肠黏膜屏障、化学屏障、生物屏障和免疫屏障，其主要功能是抵御肠腔内细菌及毒素进入体内。

Part 1: Permeability of Exogenetic BDNF through placental barrier of pregnant rats and blood-brain barrier of fetus with transient uteroplacental ischemiaObjective To investigate the potential of BDNF to penetrate the placental barrier and get into the fetus and pass through the blood-brain barrier of fetus to play neuroprotective function in the condition of transient ischemia.

第一部分：外源性脑源性神经营养因子在宫内缺氧环境中对胎盘及胚鼠血脑屏障通透性的实验研究目的：探讨外源性脑源性神经营养因子在宫内缺氧环境下能否通过胎盘屏障进入胎鼠体内，再通过胎鼠血脑屏障进入胎鼠脑组织而发挥其生物功能。

It also probes into the problems of the tourism development and the geo-environmental traits of the Tibetan-Yi Corridor from a new point of view. Geopolitically, the Tibetan-Yi Corridor acts as a passage and functions as a barrier as well. In the Corridor, the valley from the north to the south of Hengduan Mountains used to be the passage of the ancient migration.

地缘政治学意义的藏彝走廊，既有通道的功能，又具屏障的作用：走廊中横断山脉间南北&纵贯&的河谷就是历史上民族迁徙的通道；而屏障有三：即地貌的屏障、生态的屏障和民族的屏障。

Wheel/rail noise of the high-speed slab track on concrete bridge and that of the urban elevated supporting block track are predicted respectively. Noise of the slab track, compared with that of the ballasted track, is more severe. The noise of the slab track is about 6.2dBA higher than that of the ballasted track for the receiver nearby the rail, and about 3.5dBA higher than that of ballast track for the receiver

对降低高速铁路桥上板式无碴轨道及城市轨道交通桥上支承块式无碴轨道轮轨噪声的技术措施进行了研究，包括：(1)分别就板式轨道和支承块式轨道结构参数的低噪声设计原则进行了研究；(2)对几种典型的新型轨道用吸声材料的降噪效果进行了分析，结果表明降噪效果显著；(3)就声屏障高度、位置、形状以及声屏障内侧敷设吸声材料对降噪效果的影响进行了分析，结果表明：声屏障越高、越接近轨道，降噪效果越好；声屏障内侧敷设吸声材料，可降低钢轨近旁噪声2.0～3.0dBA，可降低近地面噪声约1.5～2.0dBA

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。