查询词典 sensitivity analysis

In order to study the effects of pre-heating on the sensitivity of cells to tumor necrosis factor-α, the K562 cells were pre-heated at 40℃ for different times to induce heat shock protein 70(HSP70). To observe the effects of TNF-α concentration on the sensitivity of pre-heated cells, cells were pre-heated for 60 min and treated with TNF-α(50,100,200 and 400U/ml) for 16 hours, and the cells vitalities were detected by MTT.

为探讨预热对肿瘤细胞肿瘤坏死因子α敏感性的影响及其机理，将白血病患者胸腔渗出细胞系(K562细胞)在40℃预热不同时间(0、30、60、90、120、150和180min)，使细胞热应激蛋白70(HSP70)高表达；然后将预热60min细胞和未预热细胞分别暴露于50、100、200和400U/ml的TNF-α16小时，用MTT比色法检测细胞活力。

The results showed that the stearates can accelerate the development of PTG material. The addition of NiSt2 greatly increased the maximum density and the sensitivity together with a slight fog increase. However the addition of BaSt2 and CaSt2 did not make such great increase in the maximum density and the sensitivity, together with a slight fog decrease.

结果表明，MSt2的加入可促进PTG材料的显影，其中加入硬脂酸镍(NiSt2)后在灰雾增加不大的情况下，最大密度和感光度大幅度提高，而加入硬脂酸钡(BaSt2)和硬脂酸钙(CaSt2)后在抑制灰雾的同时，最大密度和感光度也有一定程度的增加。

One pair of primers that amplified the gB gene of pseudorabies viruswas designed and synthesized.PCR technique detecting the DNA of PRV was established after selecting the best reaction conditions.This technique was applied to specifically amplify the 281 bp DNA fragment of the PRV strains including Fa,Fb,Bartha,BJ,GD,V2F4,S,S3,SR,Buk,Shope,Norden,Mink Ⅲ,HB,F8,F9 and F12 in cultured samples.The negative results were achieved from Vero cells,swine vesicular disease virus,hog cholera virus,Japanese encephalitis virus,porcine reproductive and respiratory syndrome virus,porcine parvovirus,foot and mouth disease virus F29 strain,O3I3 strain,T509 strain and O Ⅱ MF249 strain.The results of sequencing showed that the PCR method was of specificity.The sensitivity of PCR reached 15.8 pg of PRV Fa strain DNA.The tissue samples obtained during 1994 and 2000 were detected,and the results showed that the sensitivity of PCR was more sensitive than virus isolation and the Sandwich ELISA.The PCR was applied to detect 191 tissue samples from 31 pig farms obtained from Guangdong,Fujian,Hainan Provinces during 1999 and 2000,50 samples(26.2%)were positive and 22 pig farms(71%)were positive.

根据伪狂犬病病毒gB基因的序列，设计并合成了一对引物，以闽A株细胞培养毒为模板，筛选最佳反应条件，建立了检测PRV的PCR方法应用该方法对Fb、Bartha、BJ、GD、V2F4、S、S3、SR、Buk、Shope、Norden、MinkⅢ、HB、F8、F9、F12等毒株的细胞培养液进行基因扩增，均获得了分子量为 2 81bp的特异性目的DNA片段，而对Vero细胞与FMDV、SVDV、HCV、PRRSV、JEV、PPV等病毒进行检测，结果均为阴性，没有出现交叉反应对PRV毒株扩增的产物测序，结果序列与文献报道一致，证明PCR扩增产物和方法的特异性对 1994～ 2 0 0 0年期间送检的临床样品和保存的PRV毒种，用病毒分离、双抗体夹心ELISA和PCR等 3种方法进行检测，结果前 2种方法检测为阳性的，PCR检测均为阳性；PCR检测为阴性，前 2种方法检测也为阴性；可是，前 2种方法检测为阴性的，PCR却检测出部分阳性；经x2 检验，证明PCR检出率明显高于前 2种方法的检出率对PRV闽A株细胞毒提取物DNA进行检测，其最低检出量为 15 8pg 对 1999～ 2 0 0 0年期间广东、福建、海南等省的 31个大中型猪场送检的 191份病料进行检测。

The unit has a variable attack (.5 to 100 millisecond) and release (100 millisecond to 3 seconds) input sensitivity switch, overload LED, compression control (over 24 dB), change and VU meters, side chain outputs, link inputs, low frequency compression sensitivity switch and output gain control.

该部门有一个变量攻击（0.5至100毫秒）和释放（100毫秒至3秒）输入灵敏度开关，过载灯，压缩控制（超过24分贝），变更，VU表，侧链产出，链接投入，低压缩灵敏度开关频率和输出增益控制。

The genetic study suggested that the carbendazim-resistance in these mutants could be steadily inherited by asexual and selfed reproduction, and the resistance was controlled by the same single major gene both in laboratory mutants and field resistant isolates, the different levels of resistance or the same resistant level in different strains maybe conferred by mutations at different sites or one site with different allelic mutations. The gene compensates for the sensitivity to MDPC was allelic to that governs the carbendazim resistance, but the mutation for increasing sensitivity to MDPC in this gene could get the pathogen highly resistant to carbendazim.

抗药性遗传研究表明，在所研究的抗药突变体中，抗药性在自交和无性繁殖后代中能稳定遗传；室內抗药突变体和田间抗药菌株对多菌灵的抗药性由同一个主效基因控制，但它们发生突变的位点不同或者同一碱基位点发生了不同的突变；对MDPC的敏感性也是由单个基因控制的，该基因与控制多菌灵抗性的基因是等位基因，当该基因发生对MDPC的敏感性增加的突变时会使病菌对多菌灵产生高水平抗性。

A mixed sensitivity H∞ control model is constructed and the band width of wind turbine speed control is designed according to the frequency characteristic of wind speed variation and noise of rotating speed sensor. The sensitivity function is decreased within this frequency band to restrain the wind torque perturbation to wind turbine rotating speed control.

通过构造基于复合灵敏度的H∞鲁棒控制模型，根据风速的波动频率范围和传感器的噪声频率范围设计了风车转速控制的带宽，并在此带宽内降低系统的灵敏度函数，来抑制风力转矩对风车转速控制的干扰。

The methods testing the WEP usually are torsion pendulum and free falling, the latter one is limited by the height of experiment, so the sensitivity of this method can't be improved, thus nowadays the torsion pendulum is mostly used in high sensitivity experiment.

检验弱等效原理的方法多为扭秤方案和自由落体方案，自由落体法由于受到实验高度的限制，使得在地球上的实验精度无法得到进一步提高，因此现在高精度的地面实验大都采用扭秤方案。

All factors affecting relative sensitivity are analyzed. The sensitivity of slide bridge and its influence on the measured resistance Rx are discussed.

用两种不同方法导出了单电桥的相对灵敏度计算公式，分析了影响相对灵敏度的各种因素。

All factors affecting relative sensitivity are analyzed.The sensitivity of slide bridge and its influence on the measured resistance Rx are discussed.The condition of the minimum relative error is theoretically given.

并在此基础上讨论了滑线电桥的灵敏度及其对所测电阻 Rx 的影响，从理论上给出了滑线电桥最小相对误差的条件：要使滑线电桥灵敏度所引起的相对误差最小，电桥平衡点的位置应按待测电阻 Rx 与检流计内阻 Rg 的比值来确定。

The threshold side beam's sensitivity was calculated in detail model by Hypermesh software, and compared the result with the sensitivity that was calculated in conception model by Nastran.

在HyperMesh软件计算了详细模型中门槛侧梁的灵敏度，并与在概念车身模型中求得的灵敏度进行了比较，结果证明，在概念设计阶段研究梁截面对车身刚度的影响是可行的。

Molecular Distillation is a kind of high vacuum distillation method, which is suitable for the separation of high boiling, heat sensitivity and viscidity products.

分子蒸馏技术是一种在高真空条件下进行的连续蒸馏过程，适合于分离高沸点、热敏性及具有生物活性的混合物。

They are to the Noughties what yuppies were to the Eighties .

那在六十年代是时髦的，但在八十年代肯定是过时了