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In addition, some modifications on several computational methods are also presented. Using LMTO method the electronic structure of several systems are studied, and some results are obtained. They are: The ideal Nb (100) surface has three surface states, the multi-layer relaxed surface has two surface states. The surface energy of the ideal surface is higher than that of the relaxed surface, that means that the multi-layer relaxed surface is more stable than the former one, which supports the LEED results. The mono-layer relaxed Ag (111) surface is the most stable one among several" stable surface models"presented by several researchers. The surface energy of Ag (111) surface is higher than that of surface Ag (001), which supports some experimental results such as different reaction rate at different surface orientations for the same material. The surafce states of Si (111) surface not only locate near the Fermi level, but also in the valence band, which agrees well with Cohen's conclusion. Si (111)-H is an effective model for analysing the surface states and H adsorbed on the back surface is a good method for improving the convincingness of the results obtained on thinner slab models. The surface stability depends on three different kinds of MoSi〓(001) surfaces, the surface with mono-layer Si is the most stable one, and the surface with Mo at the first layer is the most unstable one among them. These are consistant with the Kemoda's experimental results. The valence bands of clean or K adsorbed CdTe (111) surface agrees well with the synchrotron radiation studies. The surface of CdTe (111) consists of four kinds of surface models which show different surface electronic structures and different surface structure stabilities. The conclusion agrees well with Wu's experimental work. The different absorbed alkali metals on the CdTe (111) surface give different adsorption characteristics which have relations not only with the valence electrons, but also with the core ones of the alkali metals. The electonic structures of Si-C alloys are different from that of Si-Ge alloys, and the energy band gaps of Si-C alloys do not increase linearly with Carbon concentration, our conclusion supports Alexander's results, but conflicts with Soref's one.
现分述如下: LMTO方法及其应用方面:1)通过对Nb(100)表面电子态分析发现清洁理想表面有三个表面态,多层弛豫表面有两个表面态;表面能大小说明多层弛豫表面更稳定,支持了LEED结果。2)通过对采用不同方法获得的几种不同Ag(111)表面稳定结构的表面能计算分析,给出了单层弛豫表面为Ag(111)表面的最稳定结构;从Ag(111)单层弛豫表面和Ag(001)表面的表面能比较,发现了Ag(001)表面表面能要比Ag(111)小的,表明了同种物质不同表面取向将表现出不同物理、化学性质,这是与实验中得出的结论是吻合的,3)通过对Si(111)表面态分析,不仅发现了Si(111)表面不仅具有居于费米能级附近的悬挂键所对应的表面态,而且还有很多表面态位于价带能量范围内,与Cohen等结果一致,H饱和slab模型背表面相当于增加了slab层的厚度,是一有效的变相增加slab层厚的方法,弛豫表面较清洁理想表面价带谱们低能端的少许移动,预示着总能降低,说明弛豫表面较清洁理想表面稳定。4)MoSi〓具有三种表面,从费米能级上态密度值大小得到单层Si表面最稳定,Mo原子为表层原子的表面最不稳定,双层Si原子表面居中的结论,这与Kemoda等人实验结果是一致的。5)通过对CdTe(111)表面表面电子态、表面结构稳定性及表面H、碱金属吸附的电子结构系列研究,不仅得出了CdTe(111)清洁及碱金属K吸附价带谱与同步辐射光电子谱相吻合的结果,而且发现了CdTe(111)表面具有四类不同原子近邻特征,表现出四类不同的表面结构及电子结构特征:不同表面态分布、不同的表面结构稳定性(表层原子与次层原子成三键有一悬挂键的表面要比表层原子与次层原子成一键有三悬挂键稳定(与Wu等人实验结果一致))、不同的H吸附特性。
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The results manifest that the concentration of glycocholic acid has satisfactory linear correlation whith peak area, regression equation: Y= 39579X + 57823,R2=0.9984;The lowest detected concentration is 0.02μg/mL with S/N=3 ; Average recovery rate is 98.49%; RSD为0.52%~2.00%in day, RSD为0.74%~4.98%between days;The average recovery rate is 99.35%, RSD is 2.24% in the first team, and it is 100.87%, RSD is 4.73% in the second team at the stability test. When the concentration of glycocholic acid was detected in the liver, kidney and brain tissue, corresponding tissue concentration was calculated by preparing the standard curve with the glycocholic acid standard preparation in vitro, but the result can only reflect the relative chang law of the concentration of glycocholic acid in tissue but not in real tissue. The result of tissue stability experiment is consistent with that of the serum experiment.
结果表明,在0.15625~10.0μg/ml范围内血清中甘氨胆酸浓度与峰面积呈良好的线性关系,回归方程Y= 39579X + 57823,R2=0.9984;以信噪比S/N=3为标准,最低检测浓度为0.02μg/ml;平均回收率为98.49%;日内RSD为0.52%~2.00%,日间RSD为0.74%~4.98%;稳定性试验第一组的平均含量为99.35%,RSD为2.24%,第二组的平均含量为100.87%,RSD为4.73%;测定了肝、肾、脑组织中甘氨胆酸含量,采用体外甘氨胆酸标准品制备标准曲线的方法计算了相应的组织浓度,其结果仅反映组织中甘氨胆酸浓度的相对变化规律,不能体现真正的组织浓度值,但对组织样品的稳定性进行了较细致的考察,其结果和血样结果基本一致。
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I saved taxes for last, recommending that we increase the top income tax rate from 31 to 36 percent on incomes over $180,000, with a 10 percent surcharge on incomes over $250,000; raise the corporate income tax rate from 34 to 36 percent on incomes over $10 million; end the tax subsidy that made it more profitable for a company to shut down its American operations and move overseas than to reinvest at home; subject more of the income of the best-off Social Security recipients to taxation; and enact the BTU tax.
我把税收问题留到最后来说。
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The recessive sluggish that the high recessive unemployment rate that the article drafts to be in to be being put in economy at present and rate of high recessive inflation form bilges undertake rough analysis, be in in order to promote carry out the to this one problem sufficient understanding in can developing the strategy continuously and take seriously.
本文拟对目前经济中存在的高隐性失业率和高隐性通货膨胀率构成的隐性滞胀进行粗略的分析,以促进在实施可持续发展战略中对这一问题的充分了解和重视。
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The results indicated that the accumulation of Mn in the cell wall (accumulation rate as high as 36.34%) and the vacuole of the leaves (accumulation rate as high as 65.64%) might be one of the mechanisms of tolerance and hyperaccumulation of Polygonum hydropiper to Mn. Most Mn in leaves were the speciation of H2O-solubility organic salts or manganese oxalates. The content of chlorophyll a did not change under different Mn concentration treatments except that its content decreased remarkably when Mn concentration was 8000μmol/L in solutions. The membranes were not banned by Mn when its concentration was less than 5000μmol/L in solutions; Under different Mn concentrations of Mn, the content of their soluble proteins of leaves had changed at some stage. The activity of SOD and POD were gradually improved with the increasing of Mn concentration, which could eliminate activated oxygen free radical, This might be the other physiological mechanism of tolerance and hyperaccumulation of Polygonum hydropiper responding to Mn.
结果表明:锰在水蓼叶片非活性代谢部分的积累是其解毒耐锰的主要机制之一;水蓼叶片中的锰大部分以水溶性有机盐或草酸锰的形态存在;在锰浓度处理为8000μmol/L时,叶绿素a含量显著降低,而在其它处理条件下,叶绿素a无明显变化;在锰处理≤5000μmol/L时水蓼叶片的细胞膜还没有受到明显伤害;水蓼叶片的可溶性蛋白含量随锰处理浓度不同而变化,说明植物在代谢和结构上发生了调整;随锰处理浓度的增加,水蓼叶片SOD和POD活性提高,保护酶活性的提高又可清除活性氧自由基,这是水蓼耐高锰和累积锰的一种生理响应机制。
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The boundary condition that the surface of the crust is kept at a constant temperature of 25℃, leads to relatively less obvious variation of temperature in the underground no deeper than 2 kilometers, so that the calculated strain rate is less than 10〓(normal geological strain rate is 10〓~10〓).
由于地表的边界效应,在深度小于2km的地壳里,温度变化相对不急剧,一般不出现大于10〓应变速率(典型的地质应变速率为10〓~10〓)。
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The temperature rising mechanisms of manganese carbonate fines containing coal by microwave heating were discussed. The results show that, manganese carbonate fines containing coal have good characteristics of microwave heating and self-reduction. At the molar ratios of C atom to O atom as 1.1, 1.2 and 1.3 in the mixed materials, the averaged maximum temperature-rising rate of the mixed materials by microwave heating is 140.7 K/min at 1 473 K with the microwave frequency of 2.450 GHz. At the different containing coal ratios and heating temperatures, the value of the dielectric constant is big, 5.5, but that of the permeability is about 1, so the mixed materials belong to dielectric loss. The temperature rising performance depends chiefly upon the electromagnetic performance of materials, whose change is caused primarily by the chemical reaction, the changes of crystal structural , and the changes of defects state. The bigger the containing coal ratio, the better the absorptivity of microwave. At the same containing coal ratio, the higher the heating temperature, the weaker the absorptivity of microwave.
研究结果表明:含碳碳酸锰矿粉具有优良的微波加热特性和自还原性;在微波加热频率为2.450 GHz、碳氧原子摩尔比分别为1.1,1.2和1.3时,微波加热混合物料至1 473 K的升温速率平均最高达到140.7 K/min;不同的加热温度和配碳比下混合物料的介电常数较大,都在5.5左右,而磁导率为1左右,属介电损耗型;微波加热含碳碳酸锰矿粉的升温性能主要取决于含碳碳酸锰矿粉的电磁性能,而电磁性能的改变主要是由物料加热过程中产生的化学反应、晶体结构变化及缺陷状态的改变引起的;配碳比提高,物料吸收微波的能力有所提高;在相同的配碳比下,加热温度升高,吸收微波的能力有所减弱。
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"Our results suggest that prognostications based upon initial progression rate are most reliable for slow and fast progressors but that long duration reliability of an intermediate progression rate may depend upon the patient's age and life expectancy at diagnosis," the study authors conclude.
&我们的研究结果提示:基于初诊进展率的预后评估对低进展患者与快速进展患者来说最可靠,但是中等进展的长期持续可靠性可能取决于该患者的年龄以及依靠诊断推算出的平均寿命。&
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Set-point theorists claim that everyone has a genetically programmed basal metabolism rate, the rate at which the body burns calories for energy, and a fixed number of fat cells, which are cells that store fat for energy.
持这种理论的人说,每个人都有基因决定的基本新陈代谢率,它决定身体燃烧多少能量所需的卡路里以及脂肪细胞的数量。
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The results show that:(1) MnO2 deposition on the surface is the main factor resulting in cathode polarization, and the flowing of the solution can remarkably reduce this polarization. Furthermore, the buffered solution can reduce the polarization resulting from H+ concentration difference;(2) it is deduced from the polarization curve that the key factor influencing the performance of MFC is microbial number and metabolic rate and the electron transferring rate from microbial to electrode;(3) the power density arrives at the biggest, 824 mW/m2, when outer resistance is 300 Ω, which is accordance to the inner resistance,(284±18)Ω, deduced from I-V curve;(4) the influences of pH and permanganate concentration on cathode potential is in agreement to Nernst equation.
研究结果显示:(1) MnO2在碳纸表面的沉积是阴极极化的主要原因,而溶液流动可以明显降低极化程度;将高锰酸钾溶解在缓冲溶液中可以进一步降低阴极H+浓差极化;(2)根据极化曲线可以推断,影响电池输出功率的决定性因素应是微生物代谢反应速度和微生物与电极之间的电子传递速率;(3)随外电阻的变化,电池输出功率出现极大值824 mW/m2,相应外电阻为300 Ω左右,这与通过 I-V 关系曲线推导得到的电池内阻(284±18)Ω相吻合;(4) pH值和高锰酸钾浓度对电池阴极电极电势的影响符合Nernst方程。
- 推荐网络例句
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However, as the name(read-only memory)implies, CD disks cannot be written onorchanged in any way.
然而,正如其名字所指出的那样,CD盘不能写,也不能用任何方式改变其内容。
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Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.
镀锌钢托盘多用于出口,替代木托盘,免薰蒸,符合欧盟、北美各国对出口货物包装材料的法令要求;喷涂钢托盘适用于重载上货架之用,托盘表面根据需要制作成平板状、波纹状及间隔形式,满足不同的使用要求。
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A single payment file can be uploaded from an ERP system to effect all pan-China RMB payments and overseas payments in all currencies.
付款指令文件可从您的 ERP 系统上传到我们的电子银行系统来只是国内及对海外各种币种付款。