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Isoflavonoids are a kind of substances in leguminous plants which have biological activity and faintish estrogenic activity. Daidzein is one of the most classes in these substances.

异黄酮类化合物是一种存在于豆科植物中的生物活性物质,具有较弱的雌激素样活性,而大豆黄酮是此类化合物中存在较广、近年来研究也较多的一种。

Notably, compounds 12–14 can be described as a 3D open–framework with nano–channels, compound 15 can be described as a 3D open–framework with double helical channels, while compound 16 can be described as a 3D heterochiral coordination polymer with double helical channels, which can be obtained by spontaneous resolution from the racemic phosphonic acid.X–ray powder diffraction analysis shows that compound 16 is a pure phase. Surface photovoltage spectroscopy of compound 16 indicates that it possesses positive SPV response in the range of 300–600 nm and shows p–type semiconductor characteristic.

值得注意的是,化合物12-14为具有一维纳米孔道结构的三维开放骨架结构,化合物15是具有双螺旋孔道的三维开放骨架结构,而化合物16是外消旋的有机膦酸配体通过自发拆分而形成的具有双螺旋孔道的多手性三维开放骨架结构。X-射线粉末衍射分析表明化合物16为纯相;化合物16的表面光电压光谱分析中,在300-600nm范围内有3个正的光(来源:ABC论文12网www.abclunwen.com)伏响应带,表明它具有p型半导体的特征;化合物16的诱导表面光电压谱进一步确定它的p型半导体的特征;磁性研究表明,化合物16中两Mn原子之间存在弱的反铁磁相互作用。

In 0.015 mol/L NaOH medium, AuCl4(superscript -)reacted with hexadecyl trimethyl ammonium bromide, forming water soluble CTMAB-AuCl4 complex that exhibited a weak absorption peak at 400 nm. In the presence of hydrazine, the reaction produced orange-red nanogold particle and exhibited a surface plasma resonance absorption peak at 520 nm.

在0.015mol/LNaOH介质中,氯金酸根离子AuCl(上标-下标 4与阳离子表面活性剂十六烷基三甲基溴化铵反应生成水溶性的CTMAB-AuCl4缔合物,在400nm处产生一个很弱的吸收峰,当有肼存在时,反应生成橙红色的金纳米粒子,在520nm处出现一个表面等离子体共振吸收峰,从而可实现废水中微量肼的分光光度测定。

There are different content of Ni, Fe deposed on waste catalysts, which make them receive inequivalent force in magnetic field, catalysts with high content are selected from non- or lower magnetic active mass.

该磁分离方法主要是利用镍、铁等重金属元素在催化剂上沉积量的不同导致它们在磁场中所受的磁力大小不同,可从非磁性或弱磁性催化剂颗粒中选出吸附了较多金属的磁性催化剂颗粒。

The empirical result demonstrates that:(1) the average abnormal reture and accumulated average abnormal reture around and after quarter surplus announcement change obviously, which illustrates the quarter surplus reports are of information content in our A share market;(2) the market can treat different types of accounting surplus data distinguishly by analysing inexpectant surplus as good news or bad news, but it reacts intensely to good news and flatly to bad news:(3) the market investors are paying more and more attention on accounting surplus of listed companies, which can be viewed in the annual text that the surplus reaction coefficient significance enhances;(4) A share market is, basically, under a state of semi-strong efficiency, or at least of an effective process from weak to semi-strong.

实证结果表明:(1)季度盈余报告公布前后平均非正常收益率和累积平均非正常收益率都发生了明显的变化,说明在我国A股市场季度盈余报告是具有信息含量的;(2)通过对未预期盈余分为利好组和利空组的分析,得出市场能够区别对待不同性质的会计盈余数据,但是市场对利空消息反应强烈,对利好消息反应平淡;(3)在分年度的检验中,可以看到盈余反应系数的显著性不断增强,证明我国A股市场的投资者对于上市公司会计盈余的重视程度在不断增加;(4)研究结果倾向于我国A股市场基本处于半强式效率,至少我国证券市场正处在从弱式有效向半强式有效转变的过程中。

Chemically, fluoroquinlones are an amphoterics molecule processing major ionizable groups, a basic piperazine amine and acidic carboxyl. The form of drugs was greatly affected by the acidity in aqueous solution. Thus the effect of pH values in aqueous solution on the fluorescent properties of fluoroquinolones was studied in details, the spectral properties of each form was characterized. It was found that the fluoroquinolones exhibit weak fluorescence in strong basic solution.

氟喹诺酮类药物分子结构中既有羧基,又有哌嗪氨基,它们所处环境的pH值对其存在型体有很大影响,因此我们详细研究了水溶液的pH值对该类药物光谱特性的影响,并对于各型体光谱特征进行归属,发现强碱性溶液中其发光较弱。

Abundances of compatible and weakly incompatible elements in melt vary greatly when P values chanse, so P values of these elementscan not be replaced by D0 in the melting model. However, abundances of moderately and highly incompatible elements only show small variation when P values are different. It is thoughtthat P values of moderately and highly incompatible elements are equal to D0 values in the nonmodal partial melting model.

当P值不同时,相容元素和弱不相容元素在熔体中的浓度出现大的变化,因此,在模型中这些元素的P值不能用D0代替;然而,P值的变化仅造成强不相容及中等不相容元素的浓度小的变化,可以认为强不相容与中等不相容元素的P值约等于D0。

The results showed: there is the apoptosis of the myocardial cells during the period of I/R. The further study showed that there is the express of Bcl-2, Bax and Fas in the model of the cultured myocardial cells which were treated with ischemia-reperfusion The express of Bax, Fas proteins increase obviously. The overexpress of Bcl-2 is weak positive which shows that there is certain relationship between the apoptosis of the myocardial cells and the higher express of Fas and the ratio descent of the Bcl-2/Bax.

结果表明:在I/R过程中确有心肌细胞凋亡现象,而且进一步研究发现在培养的心肌细胞缺血-再灌注的模型中均见Bcl-2、Bax、Fas的表达,Bax、Fas蛋白的过度表达明显增加,Bcl-2的过度表达仅呈弱阳性,表明心肌细胞的凋亡与Fas的高表达,Bcl-2/Bax的比例下调有一定的必然联系。

Optical control of the primary step of photoisomerization of the retinal molecule in bacteriorhodopsin from the all-trans to the 13-cis state was demonstrated under weak field conditions (where only 1 of 300 retinal molecules absorbs a photon during the excitation cycle) that are relevant to understanding biological processes.

在弱场条件下(整个兴奋周期中,300个视黄醛分子中只有一个吸收光子),细菌视紫红质中视黄醛分子的从全反式到13-顺式状态的光致异构化的最初阶段的光学控制被阐明,这与生物学过程的理解有关。

In still other embodiments, the invention provides for the recovery of a raffinate from the formation which is enriched in relatively weaker adsorbing gaseous fluids.

还有些实施方案中,本发明提供了从富集相对较弱吸附气体的岩层中回收残液的方法。

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你知道吗,我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书,王祥生,李德昌。安徽省首次发现嗜群血蜱。

Chapter Three: Type classification of DE structure in Sino-Tibetan languages.

第三章汉藏语&的&字结构的类型划分。