查询词典 essential resistance

Base on the problem of large quantity fatigue loads on corroded R.C. structure and small quantity study of its mechanical property, bending resistance fatigue test of corroded R.C. beams is discussed in this paper. The influence of stress ratio and re-bar weight loss ratio on bending resistance fatigue performance of corroded R.C. beams are researched, and the relation between strains of corroded re-bars and fatigue life of beams are obtained. The main research contents and conclusions are as following: 1. Under the fatigue loads, the overstrain of concrete approximately coincidences three stages strain development and accumulation rule, and the mechanical property of concrete is deteriorated. The fatigue damage of concrete is accumulated. The overstrain of re-bars increases and the increase rate decreases.

鉴于实际工程中大量存在腐蚀钢筋混凝土结构承受反复荷载作用，但其力学性能研究不多的问题，本论文进行了锈蚀钢筋混凝土梁抗弯疲劳试验，研究了应力比和钢筋锈蚀率对锈蚀钢筋混凝土梁抗弯疲劳性能的影响，得出了锈蚀钢筋的应变与构件疲劳寿命之间的关系曲线，主要研究内容及结论如下：(1)在循环荷载下，混凝土残余变形基本符合三阶段变形规律，力学性能劣化，疲劳损伤积累。

Journal of Antimicrobial Chemotherapy Advance Access publication 6 December 2005 OXE β-lactamases in Acinetobacter:the story so far Molecular Chemotherapy,Centre for Infectious Diseases,University of Edinburgh,The Chancellor's Buliding,49 Little France Crecent,Edinburgh,EH16 4SB,UK The emergence of carbaoenem resistance in Acinetobacter baumannii has become a global concern since these β-lactams are often the only effectine treatment lsft against many multiresistant strains.A recent debelopmenth has the discovery of a novel group of narrow-spectrum OXA β-lactamases in carbapenem-resistant strains,some of whitch have acquired the ability to hydrolyse the carbapenems.The first of these was found in a strain isolated in Edinburgh before imipenem was in usr in the hospital.Whether these carbapenemases have been acquired or are part of the genetic make-up of this species has yet to be determined.More importantly,however,they represent an important stage in the evolution of antibiotic resistance in Acinetobacter.This paper discusses the emergence of these unusual enzymes over the past decade.

抗菌化学疗法》杂志上 2005年12月6日提前存取出版在不OXEβ-lactamases：到目前为止分子化疗，中心为传染性疾病，爱丁堡大学，议长，49岁的法国Crecent少、爱丁堡、EH16 4SB，英国 carbaoenem电阻的出现在鲍曼不动杆菌已成为全球关注这些β-lactams通常是唯一effectine对抗许多multiresistant菌株治疗lsft…最近的一debelopmenth已发现的一种β-lactamases仅OXA集团在carbapenem-resistant株，其中一些已经取得了hydrolyse能力的carbapenems第一个被发现在一株孤立在爱丁堡的药物有亚胺培南在使用之前在医院这些carbapenemases是否已经或正在部分的基因构成该物种还有待确定然而更重要的是，他们代表着一种重要阶段的抗生素耐药性的演化出不本文探讨了产生这些不寻常的酶在过去的十年。

The microstructure of the coating and the mechanism of the wear resistance were analyzed. Compared with the coating using oxyacetylene flame process, results showed that the wear resistance of coating prepared by plasma spray welding process is higher than that of the coating using oxyacetylene flame process.

进而对涂层的微观组织和耐磨机理进行了分析和研究，并且与氧乙炔火焰喷焊技术所制备的涂层进行了对比测试分析，结果表明，利用等离子喷焊技术所制备的超厚涂层耐磨性能更为出色。

Moreover, the resistance level of the RSC strain was higher than that of the SRC strain, demonstrating that selection with more resistant hosts can accelerate the development of resistance in the parasitoid. Ratios of MFO activity in the SP, SRP and RP strains of P.

以SRP为寄主的RSC品系的抗性水平高于以SP为寄主的SRC品系的抗性水平，表明和抗性较高的寄主同步筛选，寄生蜂的抗性发展更快。

Grisea have been obtained in recent years as well.In our previous work, an RIL population consisting of 304 lines was constructed from the indica cross Zhong 156/Gumei 2. Two genes conferring complete resistance to blast isolate 92-183 (ZC15) were primarily mapped by using 148 lines of the population. In the present study, genotype of the 304 RILs were analyzed and QTL mapping for partial resistance to 2 isolates of leaf blast and 1 isolate of neck blast were conducted.

本实验室曾经应用中156／谷梅2号构建了由304个重组自交系(recombinant inbred lines，RIL)组成的重组自交系群体，应用其中的148个株系对抗稻瘟病基因进行了初步的定位，本研究则进一步对整个群体的304个RILs的基因型进行了分析，对控制叶瘟和穗瘟部分抗性的QTL进行了定位。

We find that the negative motion is characterized by a peak of negative voltage or resistance in resistance–temperature transport measurements.

我们发现这种负运动在电阻-温度输运测量中表现为负电压或负电阻峰的特征。

This paper analyzes the sliding bodywork in Mechanism and feasibility and brings up a way of designing; it also analyzes and calculates the Resistance of sliding bodywork. Emphasize the way of design and the specific realized structure of adjustable moving device, which can decrease resistance and increase speed for pedrail vehicle.

该文对滑行车体进行了机理和可行性分析，提出了滑行车体的方案设计方法，并对滑行车体的阻力进行了分析和估算，重点分析了履带车辆降阻增速的可伸缩式行动装置的方案设计及其具体的结构实现形式。

The air cooling coil adopts the air clasp large bending tube Persian blinds overturn edge wings , the clustered mechanical expansion tube , the heat exchange rate is high , the water resistance and wind resistance is small .

表冷器采用发卡式大弯管套百叶窗翻边铝翅片形式，集束机械胀管使热交换功率高，水阻，风阻小。

The baumanii resistance shows upgrade tendency overall, and the persister increases rapidly as well as multi-drug resistance because of widely use even abuse of antibiotics.

由于抗菌药物的广泛使用甚至过度使用，鲍曼不动杆菌的耐药性呈总体上升趋势，耐药株迅速增加，并出现了多重耐药株。

Objective: To approach the drug resistance reversion effect of two kinds of animal origin ω-3 polyunsaturated fatty acids, to human ovarian carcinoma cell line A2780 holding doxorubicin resistance, by the vitro cytotoxicity experiment of human ovarian cancer cell and doxorubicin persister.

目的：通过人卵巢癌细胞及多柔比星耐药株的体外细胞毒性实验，探讨两种动物源性ω-3多不饱和脂肪酸对耐多柔比星人卵巢癌细胞系A2780逆转耐药性的作用。

However it can often be frust ating for a child when people are unable to pronounce their name.

但它往往可以令人沮丧的一个孩子当人们无法断言他们的名字。

All these compounds were obtained from this genus for the first time. Compound, 4-cumylphenol, was a new nature product.

所有化合物均为首次从本属海藻中分离得到，其中4cumylphenol为新天然产物。