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Secondly, we choose the proportion of shares held by institutions as dependent variable, and we use log of the total asset, volatility, beta, Jensen Index, debt-to-asset ratio, dividend yield, turnover ratio, years listed in exchange and HS300 Index dummy as explanatory variables. Then we set up a multiple regression model. Finally, we use the cross-sectional data from the end of 2006 to the end of 2007Q3 to test the relationship between the explanatory variables and the proportion held by institutions.
具体方法如下:首先,在已有研究成果的基础上,对我国机构投资者的审慎性持股偏好提出了两个假设;其次,以机构持股占个股流通盘的比例为因变量,以公司的总资产对数值、波动率、贝塔值、Jensen指标、资产负债率、股息率、年度换手率、上市年限为解释变量,并在引入沪深300虚拟变量后,建立了多元线性回归模型;最后,采用我国证券市场迎来历史性大牛市、机构投资者发展最为迅猛的2006年末-2007年3季末的四个横截面数据,对各解释变量与机构持股比例之间的关系进行了实证检验。
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Process for the manufacture of a dialkylphenylethylmalonatewhich comprises adding to a quantity of sodium which is covered with a hydrocarbon solvent boiling above 100°C, at least a chemically equivalent proportion of methyl, ethyl or a propyl alcohol, subsequently adding an approximately equivalent proportion of a dialkylcarbonate and of an alkyl phenylacetate, the alkyl groups in these two last-mentioned compounds being preferably the same as the alkyl radical of the above –mentioned lower aliphatic alcohol, heating the mixture to induce reaction and continually distilling out the alcohol formed from the reaction zone and finally causing the sodio diethyl phenylmalonate so formed to interact with an ethylating agent.
生产二烷基苯基丙二酸酯的工艺过程:这包括这包括把至少处于化学平衡的甲醇,乙醇或丙醇添加到覆盖着沸点超过一百摄氏度的碳氢化合物溶剂中,接着加入大约相同当量的二烷基碳酸酯和烷基乙酸苯酯,在刚才提到的化合物中,其烷基集团最好是和刚才提到的低级别脂肪族醇相同,然后加热反应混合物从而引导反应的进行,在反应区域通过连续蒸馏移除形成的醇类。最后使所形成的钠代二乙基苯基丙二酸酯和乙基化试剂反应。
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The macroscopic rheological parameters and microstructure parameters were closely related, it is helpful to explain the essence of multiple rheological properties through the analysis of which the wax evolution process and microstructure of the crude oil which is waxy and high viscosity; the yield time of gelled waxy crude oil monotone increases along with the decreasing of rate of shear (the time of stress effect prolonged), there was power function relationship between them, it can be expressed with ; when adding diesel oil to Sudan crude oil, dilute proportion bigger the eccentricity degree of paraffin particles were bigger too, that was to say the symmetry of wax crystal was better, the wax crystal form fabric more hardly when the intermolecular interaction was smaller; in the light of macroscopica, the fall extent of the abnormity temperature, solidifying point and viscosity could be larger along with the accretion of dilute proportion, as a result, it's rheological properties could be improved.
SD原油析蜡点为94℃,析蜡高峰为50~30℃,异常点为40℃;其蜡晶颗粒细小、对称性差,所以具有较大的比表面能,容易形成联生、联锁结构;损耗角曲线与储能模量曲线或损耗模量曲线的交点所对应的温度与原油凝点或倾点温度非常接近,大约在39℃左右;也就是说,含蜡原油粘弹特性曲线的交点可以表征其流动性;原油宏观流变参数与微观结构参数密切相关,原油析蜡过程及蜡晶微观结构分析有助于诠释易凝高粘原油多重流变特性的本质;胶凝含蜡原油的屈服时间随剪切速率的降低而单调增加,二者显然存在幂函数关系,可用关系式描述;当SD原油加柴油稀释处理时,稀释比越高,蜡晶颗粒的偏心度也越大,亦即蜡晶对称性越好,分子间作用力越小,蜡晶颗粒越不易形成结构,宏观表现为异常点、凝点及表观粘度等流变参数下降的幅度越大,流动性越好。
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To study the area crop distribution and the plan disposition analysis indicated that in 21.99 hm2 type area total cultivated area,the current planters beet,the naked oat,the potato,reached the proportion which occupies with the corn and the red kidney bean five crops respectively was 32.93%,36.88%,5.39%,5.61%and 19.19%;Choosed the region symbolic soil fertility target 0~10 cm surface layer soil the physical property clay content to carry on the farmland regionalization altogether to divide into 4 levels:The 1st level, soil physical property clay content>30%;The 2nd level,25~30%;The 3rd level,20~25%; The 4th level,<20%.,Showed that the plots 1~4 the proportion of cultivated land were 3.32 percent and 26.39 percent,32.16 percent and 38.13 percent.
对研究区作物分布与规划配置分析表明,在21.99hm~2样区总耕地面积中,当前种植的甜菜、莜麦、马铃薯、饲用玉米和红芸豆五种作物所占的比重分别为32.93%、36.88%、5.39%、5.61%和19.19%;选择区域标志性土壤肥力指标0~10cm表层土壤的物理性粘粒含量进行农田区划共分为4级:第1级,土壤物理性粘粒含量>30%;第2级,25~30%;第3级,20~25%:第4级,<20%。,表明该样区1到4级耕地所占的比重分别为3.32%、26.39%、32.16%和38.13%。
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Subject to any express provision in the policy, where there is apartial loss of freight, the measure of indemnity is such proportion of thesum fixed by the policy, in the case of a valued policy or of the insurablevalue, in the case of an unvalued policy, as the proportion of freight lostthe policy.
受本保险任何明示规定的制约,在发生,运费部分损失之场合,赔偿限额为:对定值保险单而言,按保险单上载明的保险金额或保险价值的比例;就不定值保险单而论,按被保险人遭受的运费损失与根据保险单被保险人处于风险中的全部运费比例。
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Using RAPD markers techonolgy analysed the genetic structure of populations and built up the reaction system of SSR markers of Aristida pennata, at the same time, analysed the genetic structure based on SSR markers techonolgy. The research results are as follow:(1) 11 amplifiction random primers were used to detecte 125 loci in 76 samples. The total proportion of polymorphic loci of. Aristida pennata is 96.8%, the average proportion of polymorphic loci of Aristida pennata is 45.3%. The analyses of Shannon diversity index (1,0.5151) and Nei gene diversity index(h, 0.3471) indicate that the gene variation is rich in subpopulations.
Pennata.tirn为研究对象,在阜康,147团及121团周边等7个亚种群采集76个样品,通过RAPD分子标记技术进行亚种群内和种群间的遗传变异分析,并采用SSR技术建立羽毛三芒草的检测技术平台同时进行遗传结构分析,结果表明:(1) 11条RAPD引物检测到76个样品有125个位点,总多态位点百分比为96.8%;亚种群内平均多态位点比为45.3%,香农表型多样性指数(1,0.5151),Nei's基因多样度指数(h,0.3471)都说明羽毛三芒草种群有较为丰富的遗传变异。
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Of the free tick, Hyalomma asiaticum asiaticum was the dominant species in the southern part while Hyalomma asiaticum kozlovi was the dominant species in the eastern part.Both of them accounted for about 66.9% and about 25% was overlapped. Among the parasitic ticks, Rhipicephalus turanicus was the dominant species and its proportion was higher than that in the northwest.The proportion of Rhipicephalus sanguineus reached about 10%,which was identical to Dermacentor niveus .
游离蜱中亚洲璃眼蜱指名亚种在南部地区占主要地位,为72.6%,而在东部地区以亚东璃眼蜱为主,为66.9%,存在25%左右的交叉,寄生蜱中以图兰扇头蜱为主,并较西北部的比例偏高,血红扇头蜱的比例达10%左右,与银盾革蜱基本一致,较西北部高出20左右。
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Results The smoking rate and great smoking proportion, the drinking rate and great drinking proportion and salt intaking quantity were all higher in hypertension group than that in normal group, and the difference was significant. The levels of Cholesterol, glycerinate, LDL, blood glucose, serum Ca, serum Fe were higher compared to the normal group and the significant existed.
结果 高血压组的吸烟率、吸烟量大的比例和饮酒率、饮酒量大的比例以及盐摄入量均高于正常组,并有统计学意义;胆固醇、甘油三脂、LDL、血糖、血Ca、血Fe水平均为高血压组高于正常组,有统计学意义。
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After the above agent all the hypothesis of the optimization assembly, versus dynamic variance that different the growing period air ratio was studied, the air proportion affecting organisms used in two-step fermentation process and decide the air proportion for different cultivating period and investigate to what extent air may affect the organisms used in two-step fermentation process so that the fair term was created for 2- keto -L- gulonic acid of the accumulation.
在以上因素都优化组合的前提下,对不同生长期空气比的动态变化研究,确定了混合菌培养过程中,根据实际单罐批的生长情况,优化控制空气比可以协调巨大芽孢杆菌﹑氧化葡萄糖酸杆菌之间关系,为2-酮基-L-古龙酸的积累创造良好的条件。
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Two original experimental methods have been developed: 1 A procedure of mineralogical analysis of zinc sulphide concentrates which permits to reliably determine the proportion Fe/Zn of marmatite in each concentrate and the proportion of marmatite in...
在此基础上,实验研究了精矿中的铁对精矿的半导体性质的影响规律,应用半导体电化学原理讨论了精矿铁含量对精矿的直接浸出的影响机理。
- 推荐网络例句
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The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.
此刻阴唇已经几乎完全的缝在一起了,排除多余淤血体液的管子和Foley导管从顶端冒出来。
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To get the business done, I suggest we split the difference in price.
为了做成这笔生意,我建议我们在价格上大家各让一半。
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After an hour and no pup, look for continued contractions and arching of the back with no pup as a sign of trouble.
一个小时后,并没有任何的PUP ,寻找继续收缩和拱的背面没有任何的PUP作为一个注册的麻烦。