查询词典 prevent changes

The calvarium bone of newborn rats was digested with bacterial collagenase and cultured to obtain osteoblasts and SP with different concentrations was then added. The proliferation and activity changes of the osteoblasts were identified by counting the cells, determining the ALP activity and observing the changes of cell cycle.

采用新生大鼠颅盖骨消化法培养成骨细胞，再加入不同浓度的SP，观察细胞生长数量，测定碱性磷酸酶活性及观察细胞周期变化。

Except for 2μmol/L Verapamil,other concentrations ofCAs and CaMAs could decrease mdr1 mRNA expression level of K562/VCRcells,indicating significant difference from those of control group(CAs:P＜0.05;CaMAs:P＜0.01),but the changes of mdr1 mRNA expression levelcaused by CaMAs had negative dose-responses relationship with CaMAsconcentration(P＜0.05),while the changes of mdr1 mRNA expression levelinduced with CAs had no dose-responses relationship with the CAsconcentration.

除〓的Ver外，其它浓度的CAs和CaMAs均可降低K562/VCR细胞mdr1 mRNA表达水平，与对照组相比，存在着明显差异（CAs：P＜0.05；CaMAs：P＜0.01）；并且CaMAs各浓度间引起的mdr1 mRNA表达水平的变化也存在着差异（P＜0.05），呈负的量效关系，而CAs各浓度间引起的mdr1 mRNA表达水平的变化无明显差异。

Comparison of changes in ejection fraction to changes in impedance cardiography cardiac index and systolic time ratio.

无创血流动力学监测对老年隐性心衰的临床意义。实用老年医学， 2008， 22(2)： 159160。[3] 马立业。无创心脏血流动力学监测仪的工作原理、参数意义和临床价值。

Dynamic changes of three protective enzymes activity and MDA content of Catalpa 'Jinsi' and C.'Yuanjichangguo' during softwood cutting time were studied. And the relations between its dynamic changes and rooting rate were analyzed and discussed.

以金丝楸和圆基长果楸的嫩枝为材料，研究了ABT处理下扦插生根过程中3种保护酶活性和丙二醛含量的动态变化，分析了其变化规律与生根的关系。

Under high-speed centrifugal force caused by changes in the system of forces and shape of changes.

高速下离心力所引起的力系变化和形状变化。

According to Liu Xie , there is unchangeableness in changes of literary forms or there are changes in unchangeableness . Such a structural theory inspires us to combine structuralist explorations of universality with post - structuralist explorations of changeableness , which may be a scientific and effective approach .

刘勰关于文学形式交中有不变或者说不变中有交的"通变"结构理论给人们启示了一条将结构主义对普遍性的探讨与后结构主义对变异性的探讨融为一体的独特的研究之途，不失为一条科学有效的研究路径。

Shoulder: High-density portion of a characteristic curve in which the slope changes with constant changes in exposure.

肩部：特性曲线的高密度部分，这一段的斜率随着曝光量的连续变化而变化。

The copyright of 80% above number of program of mainstream Chinese movie and TV changes exclusive hold by net Shang Wen, net Shang Wen changes the anthology of abroad and outstanding theatrical work that accords with Chinese culture viewpoint of value choicely at the same time and film to introduce the mainland, include Korea SBS, United States Disney channel and Ying Chao direct seeding.

主流华语影视节目的80%以上数字版权由网尚文化独家持有，网尚文化同时精选符合中国人文化价值观的海外优秀剧集和电影引进到大陆，包括韩国SBS、美国迪斯尼频道以及英超直播等。

What axe difficult are the conceptual changes, the changes in course that future generations will reproach us for not having made if we do not have the clear-sightedness and spiritual strength needed to embark on them.

什么事情最难？最难的是转交观念，如果我们今天因缺乏进行这种转变所需的敏锐的目光和精神力量而没有转交，那么后人将会责怪我们。不仅是战争改变了。

He analyzes historical figures with a clearcut class stand and emphasizes that people are the motive force in the making of history and all social changes have force in the making of history and all social changes have been made by people, not by the few great personalities.

李大钊对历史人物的分析有着鲜明的阶级立场，他强调人民群众是历史的主人，认为社会上的一切活动和变迁全为人力所造，决不是几个伟人。

Objective:To compare the response control and attention of Schizophrenic patients with that of the healthy controls by Integrated Visual and Auditorycontinuous performance test. To quantitate the impairment of cognitive function in patients, and to explore the relationship between cognitive function and the severity of the disorder.

目的：探讨精神分裂症病人在IVA持续操作测试中的反应控制能力、注意力等，并与健康人进行比较，从而量化精神分裂症病人的认知功能损害，并进一步探讨其认知功能与疾病严重程度的关系。

Main effective factors including subcooling degree, mechanical vibration, gas hydrate reformation, environment temperature, noncondensing gas and surfactant are analyzed.

指出过冷度、机械振动、重复生成水合物、环境温度、不凝性气体、添加剂是影响气体水合物生成的主要因素，还对R152a水合物的放冷进行了实验研究。