查询词典 prevent changes

Self-pollination was brought as the essential reason for causing emptied seeds by former researchers. Based on those studies, potassium antimonate and electron microscopy were used to study the calcium distribution of pollens in the micropylar canal of self-pollinated and cross-pollinated ovules and morphological changes in certain cells undergoing programmed cell death from pollination to fertilization, and observation of histo-chemical changes during microgametopyte development was performed by paraffin section.

前人研究认为自交是华北落叶松产生空粒的主要原因，本论文在此基础，运用焦锑酸钾沉淀法配合电镜观察研究了传粉后到受精前异交控制和自交辅助授粉胚珠珠孔道内花粉的钙分布情况，及此过程中细胞程序化死亡超微结构的变化，并通过石蜡切片研究了华北落叶松传粉后到受精前雌配子体发育过程及细胞内含物的变化，以研究在受精前胚珠内是否存在花粉识别与选择系统，探讨钙信号传导和花粉与胚珠相互作用及细胞程序化死亡的关系。

To investigate the stantant changes of Ⅰ、Ⅱ、Ⅲ and PG expression of mandibular condylar chondrocytes stimulated by the different static compressive stresses, so that to make a primary understanding of the relationship between the differentiation and dedifferentiation of condylar chondrocytes and different compressive stresses; to investigate the stantant changes of the content of DNA of mandibular condylar chondrocytes stimulated by the different static compressive stresses, so that to make a primary understanding of the relationship between proliferentiation and apothesis of MCCs and different static compressive stresses.

观察单层培养的髁状突软骨细胞加载不同静压力后，Ⅰ、Ⅱ、Ⅲ型胶原以及蛋白多糖表达的变化，探讨不同静压力对髁状突软骨细胞的分化及去分化的即时效应；观察单层培养的髁状突软骨细胞加载不同静压力后，其增殖、凋亡及细胞周期的变化，探讨不同静压力对髁状突软骨细胞增殖及凋亡的即时效应。

Results: The changes following hydrocortisone intervention of rats could be identified by PCA, and the kidney deficiency syndrome rats entered a state of "hyperfunction", involving a series of changes in metabolic pathway and metabolic network. The response integral area of lactic acid (δ 1.37) increased, indicating the accumulation of metabolites of lactic acid. The amount of dimethylamine (δ 2.72) also increased, indicating that the disorder of kidney function was related to kidney-deficiency syndrome. The response of creatinine (δ 3.87), asparaginic acid (δ 2.83), taurine (δ 3.44, 3.28), and hippurate (δ 7.84, 7.56, 7.64, 3.97) all decreased significantly, indicating that the hydrocortisone might cause adrenal cortex excretion injury. The response integral area of succinate (δ 2.41) and citric acid (δ 2.53, 2.68) decreased, which was usually caused by disorder of the mitochondrial function.

结果：PCA方法处理肾虚证和空白对照大鼠尿液数据显示，两组大鼠的数据可以在得分图实现分类，与对照组比较肾虚组大鼠由于氢化可的松诱导，大鼠机体进入一个过消耗后衰弱的状态，相关代谢发生显著变化，乳酸(δ 1.37)代谢发生堆积；二甲胺(δ 2.72)的含量增加，提示肾虚与肾功能异常是密切相关的；天冬氨酸(δ 2.83)，牛磺酸(δ 3.44， 3.25)，马尿酸(δ 7.84， 7.56， 7.64， 3.97)，肌氨酸(δ 3.87)等的相对积分面积明显下降，这预示糖皮质激素可能引起了肾上腺皮质分泌功能的损害；琥珀酸(δ 2.41)和柠檬酸(δ 2.53， 2.68)是三羧酸循环能量代谢及糖酵解的中间产物，其含量的降低，通常是由于线粒体功能紊乱所引起。

This studyexamined the changes in athletes' coping and affect across the phases of asport competition and the extent to which performance-goal discrepancy moderated these changes.

本研究以73名参加全国射击系列赛第四站及冠军赛的射击运动员为被试，目的是考察在比赛的不同阶段不同目标期望组的运动员应付策略和情绪的特点及差异。

It expanded to 106119ha in 1973, descented to 99167ha in 1987, backed up to 112440ha, and attained the max value in history—123170ha in 1998 and descent to 109934ha again in 2001. GIS overlaying analysis shows that, the spatial change of Minqin Oasis had the different characteristics in different stage in the last 50 years: at the end of 50's to the beginning of 70%, oasis expandation Was performed by extension of origin oasis; the atrophia of oasis from the beginning from 70's to the 80's was performed by increasing of non-oasis spot pieces of inner part for oasis; the main performance of keeping on expanding of oasis from late 80's to late 90's is outside extension of Baqu oasis near the upper stream, with increased oasis area in interior of hungriness and increased area of non-cultivation in Huqu oasis in the north. From 1998 to 2001, opening up wideness in interior of hungriness continued, but hnngrinessization of oasis became worse. The oases in the Minqin Basin developed from small to large and back to small in terms of area changes, and from south to north then to south in terms of spatial changes.

绿洲分布图的GIS叠加覆盖分析表明，近50年来民勤绿洲的空间变化在不同阶段有不同的特征：50年代末至70年代初，绿洲扩展主要表现为已有绿洲的外延式扩大；70年代初至80年代后期的绿洲萎缩，主要表现为绿洲内部非绿洲斑块增加；80年代后期至90年代后期的持续扩展，主要表现为靠近上游的坝区绿洲向外围扩展和荒漠腹地绿洲面积的增加，而北部湖区绿洲弃耕面积不断扩大；98年至2001年，绿洲荒漠腹地的开荒还在继续，但湖区的绿洲荒漠化还在进一步加剧。50年来民勤绿洲的发展总体上经历了一个面积由小到大再到小，空间位置上从南而北再向南的迁移过程。

ultrastructural changes were observed in the basilar artery after sah, and significant dynamic changes were observed in the progress.

sah后脑血管的超微结构会发生损害，并在病程发展中呈明显的动态改变；血管内皮细胞的损害是导致迟发性cvs的重要因素之一。

Ultrastructural changes were observed in the basilar artery after SAH, and significant dynamic changes were observed in the progress.

SAH后脑血管的超微结构会发生损害，并在病程中呈明显的动态改变；血管内皮细胞的损害是导致迟发性CVS的重要因素之一。

The surface subsidence in the Yellow River delta foreland area brings changes to the land surface height there, and the depth datum in the bathymetric survey is determined on the basis of the level of land bench mark, so the changes in the level of land bench mark will affect the determination of depth datum and the accuracy of bathymetric survey.

国家海洋局，第一海洋研究所，山东青岛 266061文章摘要：黄河三角洲前沿的陆地由于受地面沉降的影响，使地面高程不断发生变化。在水深测量中，深度基准面是根据陆地水准点高程确定的，陆地水准点高程的变化影响深度基准面的确定，从而影响水深测量的准确性。

The surface subsidence in the Yellow River delta foreland area brings changes to the land surface height there,and the depth datum in the bathymetric survey is determined on the basis of the level of land bench mark,so the changes in the level of land bench mark will affect the determination of depth datum and the accuracy of bathymetric survey.

又由于黄河海港附近有一无潮点，其附近的潮汐性质变化大，在黄河三角洲前沿大范围水深测量中，根据测区潮位变化设立足够的验潮站及统一各个验潮站的水尺零点到同一个深度基准面上，是保证水深测量结果可靠的关键。

About Naxxramas changes, our Lead Designertalked about this a bit in the past, a fight like Thaddius will bepretty much the same where a fight like the Four Horsemen will needa fair amount of changes.

我们的首席设计师之前曾经谈到过一点关于这个的消息——比如：塔迪乌斯的战斗和原版类似，但4DK的战斗方式将会有一些调整。

What was it that made you want to change sider ?

是什么使你临阵倒戈？

I don't know what he wants, but let's play along with him.

我不知道他要干什么，可我