查询词典 essential resistance

objective to analyze the drug resistance of staphylococcus aureusand provide suggestion for clinical rational use of antibiotics.methods secretion of those neonates suffered primary skin soft tissue infection and admitted during june,2005 to december,2007 was cultured and 113 strains of staphylococcus aureus were detected.we used k-b diffusion methods to determine their susceptibility to the common used antibiotics.results resistance rates of staphylococcus aureus to ampicillin/sulbactam,penicillin-g and cefazolin were 14.2%,40.7%and 6.2% respectively; there was no vancomycin-resistant strain.conclusion the resistance of staphylococcus aureus is not a serious problem in neonatal dermatic soft tissue infection.local treatment is the major approach in clinic,while general anti-infection consisting mainly of penicillin and first generation cephalosporin is chosen to avoid resistance mutation of staphylococcus aureus resulted from abuse of antibiotics.

多重聚合酶链反应快速鉴别葡萄球菌及。。。乳腺脓肿分离到葡萄球菌的鉴定和药敏。。。目的探讨金黄色葡萄球菌的耐药性，指导临床合理用药。方法对我院2005年6月至2007年12月新生儿原发性皮肤软组织感染患儿的分泌物进行培养，共检出金黄色葡萄球菌113株，并采用kb纸片扩散法对其进行常用抗生素的药敏试验。结果金黄色葡萄球菌对氨苄西林/舒巴坦、青霉素g及头孢唑啉的耐药率分别为14.2%、40.7%和6.2%，未发现耐万古霉素金黄色葡萄球菌。结论在新生儿皮肤软组织感染中金黄色葡萄球菌的耐药问题并不十分严重，临床处理应以局部为主，全身抗感染治疗宜以青霉素及i代头孢类抗生素为主，避免过度使用抗生素加速金葡菌的耐药突变。

Polyurethane elastomer has good elasticity, wearable property, good oil resistance, the ozone(O_3) resistance, microtherm resistance, well viscidity, good mechanical property and electrical resistance and so on. So it has been widely applied in the every area of civil affairs.

聚氨酯弹性体具有许多优良特性，如高弹性，耐磨性，耐油性，耐臭氧性，耐低温性，高粘接性，有良好的机械强度以及好的电绝缘性等，因而被广泛应用于国民经济的各个领域，成为不可缺少的重要材料之一。

Studies the influence of SSB_and _fin appendage on resistance of WPC by the model resistance test and flow visualization techniques,points out that the total resistance of WPC can be remarkedly reduced by improving the profile of the parts connecting SSB to ship hull and fins to SSB,and concludes that the layout of integration and profile of connection of SSB_and_fins appendage have their effects on the resistance of WPC.

对SSB加鳍组合附体对穿浪船阻力性能影响进行了初步探讨。目的是想法尽量减小组合附体的阻力增加。通过流动观察及阻力试验分析，对组合附体与穿浪船片体连接处线型提出了改进措施，使总阻力有明显的降低。研究表明SSB加鳍组合附体与穿浪船片体之间的综合布局及线型选择对阻力的显著影响。

In order to do research on pipe flow and pump characteristics of polymer flooding and water flooding rod-pumped well in especially high water-cut stage, rheometric test aimed at production stream from polymer flooding and water flooding rod-pumped well in especially high water-cut stage has been made, and the characteristic of production stream in especially high water-cut stage is confirmed as Newtonian fluid. Experiments using different mediums about pipe flow and pump characteristics is made. Frictional resistance and coefficient of friction resistance of annulus fluid between sucker rod and the pipe flow is calculated under different working conditions. Frictional resistance between plunger and pump barrel under different parameters is calculated based on related theory of pump characteristic and the strained analytical model of oil-well pump. Besides, using the theory of slit flow and hydraulic -clamping pressure, the frictional resistance is calculated, and the error between the result and measured value is no more than 13%.

为研究特高含水期水驱及聚驱抽油机井管流特性与泵特性，本文针对特高含水期水驱及聚驱井采出液进行了流变性试验，确定了特高含水期油井采出液的性质属牛顿流体；利用不同介质，进行管流特性与泵特性试验，得到了不同工况下杆、管环空流的摩擦阻力和摩阻系数；根据泵特性相关理论和抽油泵受力分析模型，计算了不同参数下柱塞与泵筒间的摩擦阻力，并利用缝隙流与液压卡紧力理论对柱塞与泵筒间的摩擦阻力进行了计算，计算结果与实测值误差在13%以内。

In the environment where it is higher than thermodynamics zero degree, current pulse of faitness is produced by the movement electron in the resistance, it forms the noise current of resistance by addition, the higher the temperature in resistance is, the acuter the electron movement will be, the bigger the noise current will be, therefore the resistance of the thermal noise current is formed.

作者单位：（攀枝花学院电气信息工程学院，四川攀枝花 617000）摘要：在高于热力学零度的环境下，在电阻体内存在大量由运动电子而产生的微弱电流脉冲，经过迭加形成电阻的热噪声电流。

In this study, genetic analyses were conducted to determine the genetic basis in an elite resistant inbred line Siyi with complete resistance to maize dwarf mosaic. A new genetic model, two dominant complementary genes conditioning the resistance, were found by Mendelian genetic analysis based on parents, F1, F2 and backcrosses in three successive years' field trails. The two genes were further mapped near the centromere of chromosome 3 and 6, respectively by tightly linked microsatellite markers using 242 plants from F2 generation. The resistance gene on chromosome 3 is 1.0 cM apart from the flanking markers phi053 and umc1527, respectively. Whereas the linkage distance between two flanking markers bnlg1600 and phi075 and resistance gene on chromosome 6 was 1.0 and 4.0 cM, respectively. Genotypic analysis of the plants from testcross and F3 populations supported the new genetic manners.

课题组通过连续三年的抗病鉴定，在国内种质资源中筛选出一份综合农艺性状优良、配合力较高的自交系四一，三年的表型遗传研究和两年的分子标记工作，发现四一中的玉米矮花叶病抗性是由两对显性互补基因控制的，进而利用F2作图群体，把发现的两个基因定位在第三和第六染色体的着丝点附近，并获得了双侧紧密连锁的分子标记连锁图谱，其中第三染色体上的分子标记UMC1527和phi053从抗病基因双侧逼近1 cM，而第六染色体上的分子标记phi075、bnlg1600从抗病基因双侧分别逼近4 cM和1 cM；利用B2群体、F2：3家系、BC3F1群体和带有第三、第六染色体抗病基因以及两个抗病基因的近等基因系，进一步证实了四一中成株期抗性是由两个显性互补基因控制的。

Degaussing resistor is a thermistor (四四方方board, with three-pin components), their cold resistance is generally 12 ~ 47 ohm-ohm range, when the city electricity after, the resistance low power was the work of degaussing coil, degaussing coil current larger, making degaussed temperature resistance, resistance increased dramatically, resulting in flow through the degaussing coil current decreases sharply complete degaussing process.

消磁电阻其实是一个热敏电阻（电路板上四四方方的，有三个引脚的元件，），其冷态阻值一般为12欧姆~47欧姆不等，当市电经过时，其阻值较低，消磁线圈得电工作，消磁线圈的工作电流较大，使得消磁电阻的温度升高，阻值急剧增加，致使流过消磁线圈的电流急剧减小，完成消磁过程。

In order to study the disease resistance displays of descendant of improved varieties,which pyramid different resistance-genes,compound hybridizes were adopted,and 3 Powdery mildew resistance genes which were Pm4b,Pm13 and Pm21 were pyramid and transferred,then to carried on artificial infection for F1 and F2,and investigated the phenotype disease resistance.

为了明确不同抗小麦白粉病基因聚合于推广品种后代的抗性表现，通过复合杂交，将抗小麦白粉病基因Pm4 b，Pm13，Pm21聚合并转入推广品种，其后代(F1，F2)进行人工接种和表型抗病调查。

The results showed as:(1)Gegen decreases fasting insulin and insulin resistance index and increases insulin sensitive index of rats of insulin resistance induced by dexamethasone significantly;(2)Gegen can improve glucose tolerance of rats of insulin resistance but not to alloxan indued diabetes mice;(3)Gegen increases glucose intake of 3T3-L1 adipocytes and improves the insulin resistance of 3T3-L1 adipocytes induced by dexamethasone significantly;(4)Gegen can activate peroxisome proliferator- activated receptor gamma, make it bind to PPAR response elements;(5)Gegen can up-regulate mRNA expression of PPAR v ,aP2 and adiponectin.

结果表明：①葛根显著降低地塞米松诱导的胰岛素抵抗大鼠血清胰岛素水平和胰岛素抵抗指数，升高胰岛素敏感指数，改善大鼠的胰岛素抵抗；②葛根显著改善胰岛素抵抗大鼠的糖耐量，但对四氧嘧啶糖尿病小鼠的糖耐量没有明显的作用；③葛根显著增加胰岛素抵抗3T3-L1脂肪细胞对葡萄糖的摄取，改善地塞米松诱导的3T3-L1脂肪细胞的胰岛素抵抗；④葛根能促进HepG2肝癌细胞过氧化物酶体增殖物激活受体γ与靶基因的特异DNA序列结合，对PPARγ及其下游基因的转录具有激活作用；⑤葛根能够促进PPARγ及其下游基因脂肪酸结合蛋白(aP2)、脂联素mRNA的表达。

The capacity of single pile will enhance when the length and diameter of pile increases, but effect of pile diameter is more obvious. While pile diameter increases 20、40 and 60 percents, the capacity of pile will enhance 20.4、53.7 and 78.1 percents. And with the effect of mud-cake, the capacity of single bored pile will fall down nearly 20 percents, and pile-side resistance will also reduce 15 — 35 percents. In the centrifuge tests, when the relative displacement between pile and soil was 45 —85mm, which is much more than the criterions, the pile-side resistance will become most. Meanwhile the intenerated value of utmost resistance is close to the resistance in situ. In the pile group tests, the capacity of pile group , which the space among piles increases from 2D to 3D、 4D and 5D , will enhance 6.1、9.6、18 percents .

当桩径增加20%、40%、60%时，桩承载力分别增长了20.4%、53.7%和78.1%；在考虑泥皮效应后单桩侧摩阻力减小15～35%，极限承载力减小18%～24%，且减小率随桩径的增加而变小；试验中桩身侧阻软化值与原型桩实测侧阻软化值接近，且极限侧阻所对应的桩土相对位移试验要比规范值大得多，约为45～85mm；同时群桩极限承载力随桩距的增大而增加，其中桩距为3D、4D、5D的群桩承载力分别比间距为2D的群桩高6.1%、9.6%和18%；其承载力效应系数η接近或大于1，并随着桩间距的增大而不断提高；群桩侧摩阻力沿深度的分布与单桩略有不同，即桩身上部由于承台的作用，侧阻削弱，但桩身中部侧阻具有增加的趋势。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。