查询词典 prevent changes

Based on A.Greif's study of the relation between cultural tradition and institutional changes, this paper, utilizing game theory and historical evidences, discussed the different cultural tradition of Genoa and Maghribi traders in late Middle Ages and its effects on the selection of economic institution, political system and social structural changes, and gave a new explanation for the source of the ramifications in the institution changes of the East and the West.

本文以格瑞夫关于文化传统与制度变迁关系问题的研究为基础，运用了博弈论与历史经验的归纳性分析相结合的研究方法，以中世纪晚期的热那亚和马格里布为典型案例，对不同文化传统对经济制度、政治体制和社会结构变迁所产生的影响，进行了深入具体的历史比较制度分析，并进一步对东西方国家长期制度变迁出现轨迹分叉的根源，提出了全新的说明与阐释。

Major pathological changes are duct ectasia and obvious periductal inflammatory changes.The clinical manifestations of PCM are breast mass and inflammatory changes,which should to be distinguished with advanced breast cancer and inflammatory breast cancer.

结果：乳腺导管扩张症临床表现为乳头溢液和乳腺肿物，主要与乳腺肿物和早期乳腺癌鉴别诊断，手术以局部切除多见，病理表现为导管扩张及导管周围明显炎性改变。

Meanwhile, with the lapse of time, synchronization of different nations, the changes of immigration's identity, such a cultural system also undergoes lots of changes in both its heritage contents, channels and purposes, all of which resulted in changes of playwriting, composing, orchestration and performing rules.

同时，随着时代的推移、民族的融合、移民认同心理的变化，在传承内容、途径、目的等方面也有了很多变迁，从剧本、曲谱到乐器配置、演出制度都发生了变化。

The measured parameters including the changes of prevertebral height, the changes of anterior longitudinal ligament strain and the changes of vertebral disc's height; segments including upward and downward of the fractured vertebral bodies were observed.

标本分组，并分别在过伸牵拉、纵向牵引、器械加压三种方式下复位，观察椎前高度、前纵韧带应变值、伤椎上下椎间隙高度的变化。

Comprehensive promotion prevails the development standard that changes rasorial job, from macroscopical view analysis, should hold to " area changes layout, dimensions breed, standardization production, industrialization is managed " the road; of development and be based on promote turn an area, condition of base of humanitarian resource advantage and science and technology, economy, make an on-the-spot investigation from microcosmic angle, oneself think around effect of economic benefits, brand, quality safety is mixed develop 4 big themes continuously, exert oneself advocate hit " science and technology, zoology, culture " 3 pieces of cards, will be to start the new way that changes rasorial estate development.

全面提升兴化家禽业的发展水平，从宏观视野分析，应该坚持走&区域化布局、规模化养殖、标准化生产、产业化经营&的发展之路；而基于兴化区位、人文资源优势和科技、经济基础条件，从微观角度考察，本人认为围绕经济效益、品牌效应、质量安全和持续发展四大主题，着力主打&科技、生态、文化&三张牌，将是兴化家禽业发展的新路径。

The expressions of VEGF mRNA in renal cortex in B and group C increased greatly compared with A group at 8th week(P.01), And the expression was decreased more in C group than that in B group at the 8th week;④The light microscopes results showed that no pathological changes in group A; pathological changes were much obvious in group B:glomerular capillary lumen tumbling,lumens blocked,mesangial region widened,basal lamina thicking,mesenterium base inceased,the volume of glomerulus become large,cell population increased,renal tubule vacuolization, renal interstitium was infiltrated by lots of lymphocyte and mononuclear macrophage; pathological changes in group C was light,only see glomerular capillary lumen lightly stegnosis,few lymphocyte infiltrating.

免疫组化结果显示第8周B组大鼠肾皮质VEGF蛋白含量较A组显著增加(P.01)，C组VEGF含量较B组有明显减少(P.01)，C组较A组表达量仍然增加(P.01)；③第8周B组肾皮质VEGF mRNA表达较A组有明显上调(P.01)，与B组相比，辛伐他汀可以明显减少C组肾皮质VEGF mRNA表达；④光学显微镜下A组肾小球毛细血管腔均匀一致，无狭窄，肾小管-间质无炎症细胞浸润。B组则病变较明显：大鼠肾小球毛细血管袢塌陷，管腔闭塞，系膜区增宽，基膜增厚和系膜基质增多，肾小球体积增大，出现玻璃样变；肾小管尤其是近区小管肿胀、变性、空泡形成，肾间质可见大量淋巴细胞和单核巨噬细胞浸润。C组病变较轻，可见肾小球毛细血管管腔轻度狭窄，肾小管-间质见少量淋巴细胞浸润。

Structural magnetic resonance imaging include lineal mesure, volume measure and volume rendered. They can detect the abnormal brain structure, especially the change of mesial temporal lobe in early onset of Alzheimer s disease. Recent studies more focused on functional imaging which can find the functional changes in brain. Prior to structural changes, functional changes happen, so it can reflect the sutile pathological process in Alzheimer s disease.

磁共振成像结构影像学主要介绍了磁共振成像线性和面积测量、磁共振成像体积测量和磁共振容积再现三方面，其研究热点主要集中于阿尔茨海默病患者异常脑结构的分布，以及特征性结构内侧颞叶，尤其是海马，杏仁核，以及内嗅皮质在结构在阿尔茨海默病早期诊断治疗中的作用。

Methods The acute necrotizing pancreatitis model was made by retrograde injection of3.5%Sodium Taurocholic Acid into the rat's pancreatic duct.Through mirabilit for external application and qing yi decoction,the changes of serum endothelin,nitric oxide,amylase and the weight changes ofmirabilit for external application and the pathological changes of pancreas,lungs were observed.

应用牛磺胆酸钠逆行胰胆管穿刺注射造成大鼠急性坏死性胰腺炎（acute necrotizing pancreatitis，ANP）模型，通过芒硝外敷与清胰汤内服联合应用，观察大鼠血清内皮素（endothelin，ET）、一氧化氮（nitric oxide，NO）、血清淀粉酶（amylase，AMY）的变化及芒硝外敷前后自身重量的变化和胰腺、肺脏的病理变化。

Meanwhile, the three-dimensional mechanical characteristics of calcium thenardite salt rock take great changes after a period of solution pervasion actions. The compression strength of calcium thenardite rock salt changes from 46.53MPa to 11.42MPa after 49h solution pervasion with 2.0MPa confining pressure. Accordingly, the elastic modulus changes from 43.700MPa to 0.834MPa.

由于溶解渗透使得矿物组成及其结构的变化，钙芒硝盐岩在溶解渗透前后三轴力学特性差异也很大，在2.0MPa围压的作用条件下，溶解渗透49h之后，钙芒硝盐岩的强度由未溶解渗透时的46.53MPa，降低为溶解渗透后的11.42MPa；与此同时，弹性模量也由43.700MPa降低为0.834MPa。

Reactive oxygen species causing DNA oxidative damage comes from two kinds of ways:one is from cellular normal physiological metabolism;the other is from outer environment.Redox-sensitive green fluorescent protein was expressed in Saccharomyces cerevisiae.Recombinant cells were evaluated in monitoring the changes in the redox state of living cells when challenged with toxicologically relevant metal ions NaAsO_2 or Pb(NO_3)_2 by measuring emission intensity at 510 nm with a Hitachi F6500 fluorescence spectrophotometer,roGFP expressed in yeast responded not only to typical membrane-permeant oxidants H_2O_2 and reductants DTT,but also to toxicological metal ion-induced intracellular redox changes in a dose-dependent manner.Moreover,exposure of yeast cells to NaAsO_2 or Pb(NO_3)_2 at concentrations that induced redox changes reported by roGFP caused up to 2～3 fold increases in DNA mutation frequency.This mutagenic effect was largely caused by oxidative stress since blocking the production of hydryl radicals with thiourea significantly reduced the mutation rate as well as delayed the cell death.

本文将对氧化还原状态变化敏感的绿色荧光蛋白roGFP1-R12，在酵母细胞中实现了多拷贝强表达；荧光扫描经强氧化剂H_2O_2和还原剂DTT以及环境中重金属NaAsO_2或Pb(NO_3)_2处理后的酵母细胞悬液，测定510 nm处的荧光发射强度结果显示，表达的绿色荧光蛋白对氧化还原水平敏感，且在510 nm处的荧光强度与一定的重金属浓度呈正相关，即roGFP1-R12在510nm处的荧光发射值随重金属浓度的增高而增强，从而说明重金属对细胞的毒性在一定程度上很可能是通过破坏细胞内的氧化还原平衡发生作用；同时通过该绿色荧光蛋白对胞内氧化还原状态变化的响应情况可以来实时检测环境中的重金属；遗传学的点突变频率及致死率实验数据表明，重金属能导致菌体的点突变频率和致死率升高，且活性氧的清除剂巯基脲能明显降低这种点突变和致死率，说明由重金属引发的这种点突变和致死效应在很大程度上是依赖于重金属对细胞诱导产生的氧化胁迫。

When this condition occurs, inbound replication with the source partner is stopped on the destination domain controller and event ID 2042 is logged in the Directory Services event log.

计算机密码学是研究计算机信息加密、解密及其变换的科学，是数学和计算机的交义学科，也是一门新兴的学科。

Instructions: click on the thumbnails to see a larger image, then use the left-right arrow keys to scroll through the slideshow.

使用说明：滑鼠点在小图上即可放大观赏。开启后键盘左右键可用来换照片。