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Defect of angiogenesis in bone marrow may play a role resulting in or aggravating hematopoietic aplasia in patients with AA.

再生障碍性贫血患者骨髓血管生成缺陷可能导致或加重骨髓造血障碍。

Based on the valuation of the defect that analysis-method is not equilibrate, this paper analyses systematically the relation between governance structure of the board in listed companies and efficiency, in use of the analysis-method of equilibrium in the aspects of board size,CEO duality and independent director ratio.

他们都把上市公司董事会的科学治理看成是提升企业质量，促进资本市场完善与安全的基本途径和最有效的方式之一。于是关于董事会治理问题的理论的、概念的和经验的工作已经吸引了包括经济学、财务学、管理学和社会学等众多领域的研究者们。

The undertaking of undergraduate instruction evaluation in our current HEIs has begun to become effective. At present, in order to promote instruction evaluation and the healthy development of higher education, we must further our research and carry out evaluation ac- cording to levels and catergories, develop evaluation technology, build up evaluation data- base, lower the implicit cost of evaluation, carry out management counsultation in evaluation, cope with the conflicts triggered by the intrinsic defect of evaluation.

我国现行的高校本科教学工作水平评估已初显成效，当前应深入研究和解决分层分类开展评估、评估技术研发、建立评估数据库、降低评估隐性成本、在评估中开展管理咨询、妥善处理因评估本身固有的不足带来的矛盾等问题，切实推动教学评估和高等教育的健康发展。

Cholesterol gallstones formed in C57L mice and fatty livers developed in AKR mice. Conclusions Biliary cholesterol hypersecretion is the key pathophysiological defect of gallstone formation, lith genes have effects on biliary cholesterol hypersecretion and susceptibility to cholesterol gallstone formation in C57L mice. Lithogenic bile is formed at the canalicular membrane and precedes the development of cholesterol gallstones. It is most likely that cholesterol and bile acid hyposecretion make the AKR strain susceptible to the development of fatty livers and resistant to gallstone formation.

结论胆道胆固醇的高分泌是胆囊胆固醇结石形成的主要病理生理基础，结石基因决定了C57L鼠肝内胆汁中胆固醇的高分泌和胆囊胆固醇结石的易患性，成石胆汁形成在肝内胆管，先于胆囊结石的形成；肝内胆汁中胆固醇和胆酸的低分泌可能与AKR鼠脂肪肝的发生和胆囊结石的免患性有关。

Either they do this out of pusillanimity and a natural defect of spirit; then you must make use especially of those who are of good counsel, because in prosperity they bring you honor and in adversity you do not have to fear them; but, when by art and for an ambitious cause, they are not obligated, it is a sign that they are thinking more for themselves than for you; and the prince must be on guard against them, and fear them as if they were open enemies, because in adversity they will always help ruin him.

有的人 生性优柔寡断，天生就缺乏热情。君主尤其要启用那些能忠言直谏的人，因为他们会在繁荣期给君主带来荣誉，而君主在逆境中时也不必担心他们拆台。但如果大人物工于机巧，野心勃勃，而没有感恩之心，那就是一种征兆，证明他们更多的是考虑自身的利益，而很少为君主着想。对这样的人必须像对待公开的敌人一样提高警惕，因为他们在君主遭殃时往往会落井下石。一个人在民众的拥戴下当上了一国之君，就应该善待民众——这是轻而易举之—事，因为民众对他的要求只是不受压迫而已。

To prepare studying hierarchical intelligent control system of material flows in mineral processing plant further, picturing, transition rulers, analytic methods, relevance matrix and dynamic equation, defect in applying of Petri network, fall short of orient object models applying are discussed after technology of formalization model built, non-formalization built and compound model. And Petri network system with time attribute is expanded opening network system with interface of input and output. The network system expanded with all attributes of basic Petri network model has hierarchy and recursiveness, can be analyzed with mathematical tools of network system and can deal with concurrent and asynchronously also.

为了对选矿厂生产物流递阶智能控制系统的进一步研究奠定基础，本文在讨论了形式化建模技术、非形式化建模技术和复合模型的基础上，研究和分析了Petri网的图形表示、变迁规则、分析方法、关联矩阵与动态方程、Petri网模型应用中的缺陷、面向对象模型应用中的不足，并把采用赋时的Petri网系统扩展成为对外界有输入和输出接口的开放网系统，扩展后的Petri网具有递阶性和递归性，同时保持基本Petri网的所有性质，使模型仍可采用网系统数学工具进行分析，并可处理生产物流系统中的并发性和异步性。

According to the computational stability analysis conducted to the linear term time difference scheme in simple harmonic motion equation, one new semi-implicit integration scheme also is designed. By adopting a kind of revised time-explicitdifference scheme to these linear terms still included in spectral model governing equations, this defect of spectral model only partly used in semi-implicit integrating scheme, can be overcome to some degree.

以简谐振动方程中线性项时间差分格式对其计算稳定性影响为理论依据，本文设计了一种新谱模式半隐式时间积分方案，此方案通过对一般谱模式求解框架中那些隐含的线性项采用了一种显式修正的差分格式，可有效克服其国际谱模式半隐式时间求积方案实质上只是部分应用了半隐式差分格式的问题。

The value in "benevolence" management idea, which surpasses time and space, has great significance in remedying the defect of modem western management culture, saving modern people from the loss in spirit and morality, adjusting mental malfunction such as emotional solitariness and self-isolation.

仁爱"管理思想中所蕴含的超越时空的管理价值，对弥补现代西方管理文化的缺陷，挽救现代人的精神和道德失落、调整情感孤独、自我封闭等心理失衡具有积极的指导意义。"

Results:Regardless of load manner,the stress of the bone around 1 were high when just healthy side implanted,but the stress reduced after implantantion in health side combined with the implantation in zygoma in defect side.

由于上颌骨缺损在解剖结构上的特殊性，缺损范围上的变异性和不确定性，以及赝复体形式的复杂性，使得应用有限元方法对其进行生物力学研究具有特殊困难[6]。

Crack reasons for this are: the heating temperature is too high as a result of quenching or cooling in a hurry, the quality of thermal stress and metal volume changes in the organization of the anti-stress than the breaking strength of steel; the work of the original surface defects (such as surface micro-cracks or scratches) or the internal defect of steel (such as slag, serious non-metallic inclusions, white point, the residual cavity, etc.) formed in the quenching stress concentration; serious Decarburization and carbide surface segregation; parts after quenching Back lack of timely or tempering fire; processes in front of the stress caused by excessive cold red, forging folding, turning deep marks, sharp edges and corners, such as the oil groove.

造成这种裂纹的原因有：由于淬火加热温度过高或冷却太急，热应力和金属质量体积变化时的组织应力大于钢材的抗断裂强度；工作表面的原有缺陷或是钢材内部缺陷（如夹渣、严重的非金属夹杂物、白点、缩孔残余等）在淬火时形成应力集中；严重的表面脱碳和碳化物偏析；零件淬火后回火不足或未及时回火；前面工序造成的冷冲应力过大、锻造折叠、深的车削刀痕、油沟尖锐棱角等。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。