不存在

Peony is a kind of cross-pollinating and entomophilous plant with weak capability of selfing.

芍药不存在无融合生殖，有微弱的自交性，不存在闭花授粉的现象。

No significant difference indrinking capacity was found between HS and FD and its non-early satiety subgroup.Ⅱ. Pathological findings in FD fundic mucosa and its relationship with WLT.(1) significant difference was found in 5-HT positive cell counting between early satietyand non-early satiety subgroups(P.05). but no difference in mast cell counting, activity,and H.

6HS组与FD组及FD的早饱和非早饱亚组在半排时间、排出量和排出率存在显著差异(P.05)，HS组的半排时间、排出量和排出率显著低于FD组及FD早饱和非早饱亚组：HS组与FD的早饱亚组之间的阈值饮水量和饱足饮水量存在显著差异(P.05)，HS组饮水量显著高于早饱组：HS组与FD组及HS组与FD的非早饱亚组之间的阈值饮水量和饱足饮水量均不存在显著差异。

Firstly, the sectional data from 27 companies in communications and transportation industry, which are listed before 1999, are linearly regressed. We find their capital structure and firm performance are irrelated significantly. Then the section data are quadricly regressed, but the result is also disillusionary, which indicates that the capital structure of listed companies has not the best range only with the sectional data from 1999 to 2003. Finally, in allusion to the problems in the securities market and illogicality of the capital structure, we put forward some methods to optimize the capital structure for listed companies from four facts.

文章首先对交通运输仓储行业1999年以前上市的27家公司的截面数据进行线性回归，发现在分析时段1999年至2003年，样本公司的净资产收益率和单位经济增加值与资产负债率之间线性不相关；然后文章又对该行业上市公司的截面数据进行二次函数回归，同样也没有得到令人满意的结果，这说明仅就1999年至2003年五年的截面数据而言，上市公司资本结构不存在最优区间；最后，文章对我国证券市场存在的问题以及该行业上市公司资本结构的不合理性提出了改进的设想，并从四个方面提出了优化我国上市公司资本结构的建议。

There were no significant differences in contents of quercetin, isoquercitrin and kaempferol in the fronds, and also no significant differences in contents of rutin, quercetin, kaempferol and total flavonoids in the roots of the three plants studied under the same As treatment.

结果表明：在相同As浓度处理条件下，叶片中槲皮素、异槲皮甙和山奈酚的含量不存在显著差；根部芸香苷、槲皮素、山奈酚和总黄酮含量也不存在显著差异。

The misrecognition of the performative dimension runs here in the opposite direction: the classical Master is the Master only insofar as his subjects are treating him as a Master, but here, the People are the "real People" only insofar as they are embodied in its representative, the Party and its Leader.

在此，基本的欺骗存在于这样的事实中，即这个领袖的参照点，对于他正向其提到要合法化他的统治的情况是不存在的，或者更准确地说，这只有通过其物神崇拜的代表--党及其领袖--并在其物神崇拜的代表中才是存在的。

But the effluent ammonium in the anoxic reactor, where enough NO2 were present, was equal to the blank system, and no ammonium was converted to such nitrogen compounds as NO2- and N2 by Nitrosomonas eutropha using NO2 as electron acceptor, which maybe caused by lack of the function bacteria. There were two ANAMMOX reaction pathways in the one-stage autotrophic nitrogen removal system. One way was that after part of NH4+ was oxidized to NH2OH under aerobic conditions, NH2OH and NO2- were converted to N2O under anaerobic conditions, at last N2O was further converted to N2 which realized the nitrogen removal; Another way was that at first NO2- was reduced to NH2OH, NH2OH reacted with NH4+ to form N2H4, which was further converted to N2 subsequently, realizing the nitrogen removal.

结果表明：单级自养脱氮系统内6.72%的氨氮是通过吹脱等物化作用去除的，不超过6.02%的氨氮是通过传统硝化反硝化途径去除的，87.26%左右的氨氮是由自养脱氮途径去除的，自养脱氮反应起主要脱氮作用；在足够NO2存在且缺氧的条件下，单级自养脱氮系统内的出水氨氮浓度与空白反应器相当，NH4+并没有被亚硝化单胞菌以NO2为电子受体氧化为NO2-和N2等化合物而得以去除，可能是因为系统内不存在该代谢功能的亚硝化功能菌；单级自养脱氮系统内存在两条ANAMMOX反应途径：其中一条途径即NH4+在好氧条件下被氧化为NH2OH后，生成的NH2OH与系统内的NO2-在缺氧条件下被转化为N2O，N2O则进一步被转化为N2而实现氮的去除；另外一条途径即NO2-首先被还原为NH2OH，生成的NH2OH则与系统内的NH4+反应生成N2H4，N2H4继续被转化为N2而实现氮的去除。

It is proved that there is no strong arbitrage in the proportional case if and only if there is no strong arbitrage in the nonproportional case.

我们证明了不成比例交易费的市场不存在强套利机会等价于成比例交易费的市场不存在强套利机会。

In the third chapter, we assume the expected returns of the risky and risk-free assets as well as the covariance matrix of the risky assets are not exactly known, but defined by some known elements, which form the vertices of this polytope. We consider three problems, the first one is when there exists no risk-free asset in the

第三章假设风险资产和无风险资产的收益以及风险资产的协方差矩阵不是完全确定的，其相关参数属于某个已知的凸多面体，分别在市场不存在和存在无风险资产的情况下定义了稳健最优投资组合问

In this paper we assume the expected returns of the risky and risk-free assets as well as the covariance matrix of the risky assets are not exactly known, but defined by some known elements, which form the vertices of this polytope. Robust optimal portfolio problems are proposed in the market with and without risk-free asset. And the analytical solutions are given out when the covariance matrix of the risky assets are exactly known.

本文假设风险资产和无风险资产的收益以及风险资产的协方差矩阵不是完全确定的，其相关参数属于某个已知的凸多面体，分别在市场不存在和存在无风险资产的情况下定义了稳健最优投资组合问题，并在协方差矩阵确定的情况下给出了问题的解析解。

The results show that both conformations of prolyl peptide bond are not easy to transit from each other supporting the opinion that both of the BPP's bio-characters are from its conformations separately. And the function of BPP may not lie on a conformation. The other peptide bond conformations also have influence.

结果表明，脯氨酸肽键构象不易发生互变，无论哪种构象均不存在向另一种构象转变的趋势，从侧面支持了BPP具有的两种稳定的生物学作用是来自于肽键的不同构象的观点，而且BPP的生物学作用可能也不是取决于某一个肽键构象，其它脯氨酸肽键构象对其活性也存在影响。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。