查询词典 second rate

Since the dismutation of superoxide radicals by SOD is a reaction that is rate-limited by diffusion and enhanced by electrostatic guidance, all these structural features may be related to GP-MnSOD's high catalytic activity: first, Lys38 may increase the effective enzyme-substrate association rate by enhancing the electrostatic gradient at its substrate channel; second, an excess of acidic over basic residues makes the negative surface potential of GP-MnSOD more larger than those of other known MnSODs. This may enhance the reaction rate by reducing futile collisions of superoxide radicals with GP-MnSOD's surface.

因此，GP-MnSOD的上述结构特征可能与GP-MnSOD的较高酶活有关：首先，Lys38增加了底物通道口的正静电势梯度，从而可能促进了GP-MnSOD的活性中心与底物的有效结合速率；其次，GP-MnSOD表面覆盖的过量酸性残基使得它比其它MnSOD在底物通道以外的蛋白表面更多地被负静电势所覆盖，这可能有效地减少了超氧阴离子与GP-MnSOD表面的无效碰撞，从而提高了反应速率。

Because the theoretical basement of the study on benchmark rate and benchmark yield curve is the theory of rate decision and rate term structure, the first chapter and the second one is mainly the pectination and summary of above theories and make a brief and timing review the main research productions in this field to the point.

由于基准利率和基准收益曲线研究的理论基础是利率决定理论和利率期限结构理论，所以第一、第二章主要通过对利率决定理论和利率期限结构理论进行梳理和总结，并适时和中肯的对这一领域的主要研究成果做了简要的评述。

First,we proposes the acceleration of Monte Carlo EM Algorithm,which is based on Monte Carlo EM Algorithm and Newton-Raphson algorithm,to improve the convergence rate;Second,the it is shown that the accelerated EM algorithm we proposed has quadratic convergence rate in a neighborhood of the posterior mode;Finally,its excellent performance in convergence rate is illustrated by a classical example.

受Monte Carlo EM算法与EM加速算法启发，本文构造了一种新的EM算法，称为Monte Carlo EM加速算法；证明了该算法在似然函数/后验分布的众数的附近确实具有二次收敛速度，改进了Monte Carlo EM算法的收敛速度；并通过一个数值例子的计算结果说明了该算法的优良性，它兼具实现简单及收敛速度快的特点。

At present,the rate laws and reaction mechanisms of pyrite oxidation,pyrite and chalcopyrite formation,uraninite and magnetite dissolution in aqueous solutions are mainly studied,and it is discovered that (1)oxidation rate of pyrite controlled by surface reaction assume fractional dependence on Fe3+ and O2 molalities in acid solutions;(2)Pyrite cannot nucleate directly from solutions below 300 ℃,it can only form initially through sulfidation of a FeS precursor. The rate equation of reaction between FeS and H2S to form pyrite is of the second order;(3)Chalcopyrite is formed by reactions of pyrrhotite or pyrite with Cu2+,the former proceeds via a series of mediate metastable phases of Cu-Fe sulfide,whereas the rate equation of the latter is apparently of the first order which is controlled by surface reaction;(4)The nonlinear behavior of magnetite dissolution at acid pH can be represented by a shrinking core model coupling with surface reaction and diffusion transport.

目前主要研究了水溶液中黄铁矿氧化、黄铁矿和黄铜矿形成、晶质铀矿和磁铁矿溶解的速率定律和反应机理，发现：(1)酸性溶液中黄铁矿的氧化速率对Fe3+和O2浓度呈分数依赖并受表面反应的控制；(2)低于300 ℃时黄铁矿不能从溶液中直接成核，而需初始地通过FeS先驱物的硫化生成，FeS与H2S反应形成黄铁矿的速率方程为二级；(3)磁黄铁矿或黄铁矿与Cu2+反应均可形成黄铜矿，前者经历了一系列准稳的Cu-Fe硫化物的中间物，后者的速率方程为表观一级并受表面反应的控制；(4)酸性pH时磁铁矿的非线性溶解行为可采用表面反应扩散输运耦合的收缩核模型来描述。

Consider to make clear in recent years, second acid is calcic - Bowman does not move bacillus clinical bacterium of single born of the same parents of the detached rate that go up and verdigris holiday comparatives, have the tendency that year after year rises, the fundamental condition pathogenic bacteria that already became the infection inside the courtyard [1] , have to a variety of antibacterial content be able to bear or endure higher property of a medicine [1, 2] , for this, we are monitored and statistic analysed my courtyard to came 1998 2004 7 years a second acid is calcic - the clinical infection condition that Bowman does not change bacillus, to 14 kinds of antibacterial content be able to bear or endure property of a medicine and be able to bear or endure medical tendency, sum up a report to be as follows now. 1 material and method all data all come from 1.1 basic materials to came on January 1, 1998 my courtyard outpatient service was mixed on December 31, 2004 the specimen sending check of inpatient, via clinical microbiology the lab is fostered and classics appraisal is second acerbity calcium - Bowman does not move bacillus to affect case of illness, with clinical and commonly used antibacterial at the same time content makes the kill that medical quick detects. 1.2 bacteria appraisal is mixed medical quick experiment uses live thing VITEK32 of Mei Li dust is full automatic the bacterial appraisal of bacterial analysis system and its form a complete set gets stuck and medical quick card undertakes detecting, 1998~2000 year use GNI appraisal gets stuck, 2001~2004 uses GNI+ card.

近年探究表明，乙酸钙-鲍曼不动杆菌临床上的分离率和铜绿假单胞菌相当，并有逐年上升的趋向，已成为院内感染的重要条件致病菌[1]，对多种抗菌药物有较高耐药性[1，2]，为此，我们监测并统计分析了我院1998年至2004年七年间乙酸钙-鲍曼不动杆菌的临床感染情况，对14种抗菌药物的耐药性及耐药趋向，现总结报道如下。1材料和方法1.1基本资料所有资料均来自于1998年1月1日至2004年12月31日我院门诊和住院病人的送检标本，经临床微生物学实验室培养并经鉴定为乙酸钙-鲍曼不动杆菌感染病例，同时以临床常用抗菌药物作药敏检测的结果。1.2细菌鉴定和药敏试验采用生物梅里埃VITEK32全自动细菌分析系统及其配套的细菌鉴定卡和药敏卡进行检测，1998~2000年使用GNI鉴定卡，2001~2004使用GNI+卡。

The rotating disc of Cu has been used to study the kinetics of Ag cementation on metallic Cu in ammoniacal solution. Two stages of reaction rate were found in this cementation process, i.e., an initial slow rate and a second enhanced rate.

用Cu的旋转圆盘研究了氨性溶液中Cu置换Ag的动力学，观察到有两段反应速率，即初始段反应速率慢和第二段反应速率增快。

Every treatment combination has 4 replications.(1)The germination indexes of the former are higher than that of the latter; the germination of the former is stimulated by NaCl density of 0.3 %, while that of the later is restrained by all kinds of NaCl density.(2)With increasing of temperature and PEG indesity,the order of germination rate and vigor of Bromus stamineus and Bromus inermis is decreaced.(3)Under treatment of broadcast sowing and plant density of 549kermels·m~(-2), Bromus stamineus has the highest bud rate, fresh weight, seed yield, while treated with 25cm row spacing and 412kermels·m~(-2) plant densities, tillers, plant height, growth rate increased to the top;(4) Under treatment of broadcast sowing and plant density of 549kermels·m~(-2), its growth rate is took second place, while treated with 15cm row spacing and 824kermels·m~(-2) plant densities, it has the highest seed yield

3撒播时，引进种在播种密度为549粒·m~(-2)处理下单位面积出苗率最高，分蘖数最多，鲜重最大，单株最高，种子产量最大；生长速度在播种密度为412粒·m~(-2)处理下生长最快，密度为549粒·m~(-2)处理下稍次之，结合方差分析可以初步确定它在撒播时的播种密度为549粒·m~(-2)；(4)条播时，在行距为25cm、播种密度为412粒·m~(-2)处理下单位面积分蘖数最多，鲜重最大，单株最高，生长速度最快；种子产量在行距为15cm、播种密度为824粒·m~(-2)处理下最大，在行距为25cm、密度412粒·m~(-2)处理下次之；结合方差分析，就3种规格的行距来说，引进美国无芒雀麦条播时的行距为25cm，播种密度为412粒·m~(-2)；就这两种播种方式来说，应该选择撒播。

Another result of the study is that the total rate of entering a higher school is 74 percent, 69 percent, and 86 percent. For educational opportunities, the second group is most unequal when the rate of entering a higher school increases up by 50 percent. Through the analysis of logical regression beta b, the change in the inequality of opportunities of years of education in Taiwan is mainly influenced by various sharp structures of a total rate of entering a higher school, and not by the inequality of educational resources. When the rate of entering higher school is nearly 50 percent, the opportunity of years of education is most inequal.

本研究进一步分析各年代的整体国中后升学机率，分别为74%，69%，86%，以第二组年代的升学机率最接近50%，教育机会也最不均等；而根据逻辑回归系数 b 值的分析结果，发现台湾地区民众教育资源分配之不平等性并没有明显一致的变化趋势，前述受教育年数的机会不平等性之变迁，并非受教育资源分配不平等性的影响，而主要受到整体升学率不同的钜视结构影响，在升学率最接近50%时，受教育年数的教育机会最不均等。

During the non-isothermal crystallization, compared with common PE, the cooling rate had less impact on the crystallization rate of mPE. Second, the sensitivity of the melt viscosity of mPE to the shear rate was poor, and the introduction of long chain branches onto the molecular structure of mPE could improve the dependence of their melt viscosity on both shear rate and temperature. In the extensional rheometric tests, the occurrence of phenomena of'strain hardening' relied on the structure of linear long chains, and mPE didn't show the behavior of'strain hardening', which implied that the melt strength ofmPE was poor.

其中通过共聚方法在mPE分子中引入非线性长支链结构，对提高mPE熔体粘度对温度的依赖性作用较为明显，而对提高mPE熔体粘度对剪切速率的依赖性以及对提高mPE熔体强度作用较弱；采用共混方法在mPE体系中引入线性长支链结构，则对提高mPE熔体粘度对剪切速率的依赖性以及提高mPE的熔体强度的作用较为明显，而对于提高mPE熔体粘度对温度的依赖性作用相对较弱。

The pathological lesion rate caused by local pneumonia for the progeny swinery of the first-born sows was 3/%, and that for the second -born breeding sows was 11%, being 30% of the pathological lesion rate in the first-born sows, so the health level of more than the second-born breeding sows was more stable.

头胎母猪后代的地方性肺炎痛变率为31%，二胎以上母猪后代的地方性肺炎病变率是11%，为头胎母猪后代发病率的1/3，稳定了二胎以上母猪的健康水平。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。