明显特征

Results:tlc characteristic of qualtative identification of this goods was apparent,with the same rf to standard samples.the content of uncaria alkaloid in rhynchophylline was 0.71% measured by ultraviolet spectrophotometry at 246.0 nm wavelength.conclusion:this method was found to be rapid,simple,economic,accurate and reproducible.

结果：本品定性鉴定薄层色谱特征明显，与标准品有相同的rf；紫外分光光度法在246.0 nm波长处测得钩藤总碱中钩藤碱的含量为0.71%。结论：此方法快速、简便、经济、准确、重现性好。

Two kinds of silicon samples with distinct surface treatment, i. e., one surface was chemically etched and the other was unetched, were used to investigate the characteristics of leakage current and surface flashover of semiconductor under impulse voltage in vacuum. The experimental results showed that the surface conditions of samples affected these characteristics greatly. Before flashover, the Ohmic current was observed for unetched samples and the space charge limited current for etched samples, respectively. Meanwhile both samples showed quite different flashover tracks, and the surface-etched samples displayed a much higher onset voltage of flashover.

对采用和未采用表面化学腐蚀处理的半导体硅在冲击电压下的实验表明（参见 Zhang et al ， Applied Physics Letters， 2002），试品的表面状况对其泄漏电流和沿面闪络特性有着很大的影响：在沿面闪络之前，未经处理试品的泄漏电流表现为 Ohm 性电流，而表面处理过的试品表现为空间电荷限制电流特性；同时两类试品表面的闪络通道也表现出不同的特征，而采用表面化学腐蚀处理可以明显提高其沿面闪络电压。

The pore structure types are fine throat-small pore and micro-fine throat-small pore. The reservoir shows stronger unhomogeneity in the study area.

储层非均质性明显，物性总特征为平面上砂体中心部位良好，部分井点由于次生孔隙发育，孔隙度、渗透率、含油饱和度变好。

From thematic perspective, viewing system of theory of Chinese characteristic socialism with integral sex of the theme is whole scientific and academic system, seeing itself of system of theory of Chinese characteristic socialism with thematic oneness is propose form unifiedly, but as a result of objective and actual level sex feature, a few kinds of academic configuration of system of theory of Chinese characteristic socialism present an apparent administrative levels sex.

从主题的视角，以主题的整体性看中国特色社会主义理论体系是完整的科学理论体系，以主题的统一性看中国特色社会主义理论体系本身是个统一的建构，但由于客观实际的阶段性特征，中国特色社会主义理论体系的几种理论形态呈现出明显的层次性。

ANP and CX43 began to express at 2nd week after induction and increased gradually,about 60% of the resulting myogenic cells were positive at 4th week after induction ,they were negative for uninduced cells.hMSCs'surface antigen profiles obtained by Flow Cytometry were negative for CD31\CD34\CD45 before and after induction,but CD90 expressed higher after induction while was weak positive before induction(P.05). Apotosis index was correlated with the cultural time after induction,The apoptosis rate of induced hMSCs was remarkably higher than control group(P.01),and the variation between groups was notable(P.05),the cell cycle analysis showed that the percentages of G_0/G_1phases were reduced significantly after induction. The expresstion levels ofβ-MHC and CTNT mRNA were undetectable before induction,began to increase at 1st、4th week after induction,reached the peak at 6th week and decreased after that,the expression of Bcl-2 and Bax mRNA varied regularly after treated with 5-azacytidine. hMSCs'resting membrane potential、range and rate of depolarization were heightened gradually after being induced.

结果：hMSCs诱导前为纺锤形，诱导后第2天部分细胞即开始发生形变，呈球形或短棒状，1周后胞浆中颗粒增多，约20～30%细胞边缘呈毛刷样变化；hMSCs表面抗原CD31、CD34、CD45在诱导前后差异无统计学意义，CD90未诱导时表达呈弱阳性，诱导后明显增高(P.05)；ANP和CX43在诱导前无表达，诱导后第2周开始表达且表达随时间逐渐增强，但CX43在诱导后第5周表达量开始降低。hMSCs诱导后凋亡指数随诱导后培养时间增加，低浓度诱导组低于标准浓度诱导组，组间差异有统计学意义(P.05)，G_0/G_1期细胞比例诱导后较对照组显著减少(P.05)；β-MHC和CTNT基因分别在诱导后第1周和第4周时表达开始增强，在第6周时均达到高峰，第8周时表达开始衰减，Bcl-2、Bax基因表达呈时间依赖性变化，hMSCs经诱导后随心肌样细胞特征的表达膜静息电位、去极化幅值和去极化速率逐渐增高。

He advocated Confucianism by studying its classics and cultivating in himself the benevolence, uprighteousness, rationalism and humanism. He held a great interest in and taste for things and their evolutions in the nature. Moreover, the Confucianism during the Northern Song dynasty, characterized by its pursuit of social participation, erudition, skepticism and rationalism, had great impact on his scientific research. As a result, his research was with conspicuous features of the then Confucianism.

他推崇儒学，研习儒家经典，养浩然之气，行君子之道，穷理尽性，以民为本；他对自然界的事物及其变化具有浓厚的兴趣和爱好；北宋儒学的济世精神、博学精神、怀疑精神和求理精神深深地影响着他的科学研究，以致于他的科学研究明显带有北宋儒学的特征。

The result notes that dynamic triaxial test preferably simulate the actual stress state of grading macadam, and Uzan model which considers the shear performance of material can better reflect stress states of grading macadam. Regression coefficients of the model obviously present nonlinear characteristic with moisture changed, and to further influence dynamic resilient module.More the module is larger, more diminishing rate of maximum tensile stress on pavement Bottom is smaller. To enhance draining function and strength, the gradation should been rigid controlled, and which the content of less than 0.075mm is controlled between 5～7％ and spring-back is controlled between200~300MPa are appropriate.

结果表明，动三轴试验较好地模拟了级配碎石层的实际受力状态；Uzan模型考虑了材料的剪切性能，更能反映了级配碎石在隧道路面中应力状态；随含水量的变化，Uzan模型中回归系数变化呈明显的非线性特征，进而显著影响级配碎石的动态回弹模量的变化；级配碎石模量越大，路面层底的最大拉应力减小率越小；为了兼顾到级配碎石层的排水渗透功能和强度，应严格控制级配，特别是0.075mm以下的含量宜控制在5％～7％，级配碎石的回弹模量宜控制在200～300MPa之间。

Main conclusions are as follows:(1) changes of leaf morphological and anatomical structures with tree height:25 researched tree species exhibited xeromorphic structures at tree top,that is,toward tree top,leaves were with 1 increased cuticle thickness;2 developed palisade tissue and even double-palisade structure;3 densely arranged tissue cells;4 smaller cells;5 thicker epidermis,smaller and denser stomata;6 smaller and thicker leaf,great LMA value.

本文主要得出以下结论：(1)叶片结构随树高的变化：研究的25种树种表现为越往树顶处：1角质层越厚；2栅栏组织越发达，全栅特征越明显；3叶组织细胞排列越紧密；4叶肉细胞越小；5表皮层越厚，气孔越小而密、单叶的气孔总面积越小；6叶片越小而厚，LMA越大。

ROC analysis showed that using inflection point and the second extreme point of curvature as judgment indexes, greater area under curve could be obtained, and the Youden index was 0.54-0.64, which exhibited judgment capacity.

说明LOGISTIC曲线模型的数学特征值与物理治疗效果存在明显的关联，LOGISTIC曲线模型对颈椎病物理治疗的过程特征表达充分。

On the basis of integrative expatiation and analysis on current development and problems of western advertising, this thesis summarizes the reasons which lead western advertising hang behind and face bottleneck condition, and propose a strategic concept for sustained development of western advertising In the national point of view, the development of advertising is always restricted by local social and economic development, but as the grown-up of different regional economies with their own characteristics, advertising in different regions would show their regional characters.

从全国范围来看，不同地域的广告发展水平始终受到当地经济社会发展水平的制约，但随着具有不同发展特点的区域经济在国内的迅速崛起，各个区域的广告业也将表现出差别非常明显的区域化特征来。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。