灵敏度

Following are summary of our works:(1)The powders of LaCr_(0.9)Co_(0.1)O_3, LaCr_(0.9)Fe_(0.1)O_3, LaCr_(0.9)Ni_(0.1)O_3, LaCr_(0.95)Sn_(0.05)O_3 and LaCr_(1-x)Ti_xO_3(x=0.0-0.3) were single perovskite phase with orthorhombic structure. The gas-sensing properties of their thick film sensors were tested in the acetone, ethanol, normal propyl alcohol, carbinol and formaldehyde organic gases. The sensitivity of the sensors can not be enhanced effectively by doping Co、Fe、Ni、Sn elements in B-site of LaCrO_3. Ti dopant with proper concentration can greatly improve the gas-sensing properties, which make the sensor display higher sensitivity and quicker response-recovery characteristics.

所得结果摘要如下：(1)LaCr_(0.9)Co_(0.1)O_3、LaCr_(0.9)Fe_(0.1)O_3、LaCr_(0.9)Ni_(0.1)O_3、LaCr_(0.95)Sn_(0.05)O_3和LaCr_(1-x)Ti_xO(来源：ABfd1dC论文网www.abclunwen.com)_3(x=0.0-0.3)粉体为正交单相钙钛矿结构，其厚膜型气敏元件在350℃时对丙酮、乙醇、正丙醇、甲醇、甲醛等有机气体的气敏性能测试表明：0.1mol Co、Fe、Ni和0.05mol Sn元素在LaCrO_3的B位进行掺杂后，不能有效提高材料对以上测试气体的气敏性能；而Ti元素的适量掺杂可以极大地改善LaCrO_3的气敏性能，使之显示出对丙酮气体的高灵敏度和快速响应恢复能力。

The results showed that the method has good purifying effect with high sensitivity.

实验结果表明，该方法净化效果好，灵敏度高，操作简便快速。

First,making use of martingale method,pricing formula on European contingent claim,price of call and put option were obtained;Then the partial differential equation which price of European contingent claim satisfgied was deal with and hedging strategy for option was obtained.The sensitivity analysis was given.

首先利用鞅方法给出欧式未定权益一般定价公式，并得到欧式买权、卖权价格的解析表达式及平价关系，推广了一般Black-Scholes模型及Merton模型的结果；其次利用Ito公式给出欧式未定权益价格应满足的偏微分方程和套期保值策略；最后给出了欧式期权价格的灵敏度分析。

the determination of bacterial endotoxin can be used to replace the detection of pyrogen in sodium cefoperazone injection.

选择适宜灵敏度的鲎试剂，注射用头孢哌酮钠的热原检查可用细菌内毒素检查法代替家兔法。

Driving the bimorph cantilever at one of its eigenfrequencies with an appropriate force feedback allows obtaining an effective Q-factor up to 103 in water from its original amount of ～ 40, that is, the sensitivity can be improved.

当双晶片在它的某一本征频率下被激励，通过调节一个适当的反馈力，它的机械谐振品质因数在水中可以从40增强到103，因此成像灵敏度获得显著改善。

The test results demonstrated that this MOEMS accelerometer could support more than 30g acceleration load and its static optical intensity sensitivity is about 624.7mV/g, which is related to Q-factor of the microfiber loop resonantor and MEMS structure parameters.

而相关研究表明微光纤环形谐振腔的Q值还有较大的提升空间，随着微光纤环Q值的提高(从目前10~3增加到10~6)，该MOEMS加速度传感器的探测灵敏度还将大幅提升。

Based on the technique of radiate temperature measurement, the author designs a circuit of prismatic decomposition colorimetric radiate temperature measuring. A high resolution A/D converter and measurement range switch technology are adopted to resolve the problem that it has lower radiation power and lower signal sensitivity in the low-temperature stage, while higher signal amplitude and higher need of dynamic range in the high-temperature stage. The technique of the Black Body Furnace demarcates, digital calibration and the quartic curve fitting are applied to correct the sensor and improve its measurement precision.

3研究了辐射温度测量技术，设计了棱镜分光比色辐射温度测量电路，使用高分辨率A／D转换器和量程切换技术解决低温段辐射能量小、信号灵敏度低，而高温段信号幅值大，动态范围要求高的矛盾，应用黑体炉标定技术和数字校准方法以及4次拟合校正技术提高温度测量精度。

On a ZORBAX Stable Bound (2.150 mm, 1.8 m), the rutin、quercitrin、quercitrin-3-O-giucoside and quercitrin-3-O-galactose could be separated completely with 0.05 mol/L potassium dihydrogen phosphate and methanol as mobile phase (40:60,V/V) at a flow rate of 0.3 ml/min and detected with a photodiode array detector .

在色谱柱为ZORBAX Stable Bound (2.150 mm， 1.8 m)，流动相为0.05 mol/L的磷酸二氢钾缓冲溶液-甲醇(40：60，V/V)，流速为0.3 ml/min，在检测波长为360 nm的色谱条件下，芦丁、槲皮素、槲皮素-3-O-葡萄糖苷和槲皮素-3-O-半乳糖苷分离效果好，方法灵敏度高，重现性好，用于测定雪莲果叶中的上述几种黄酮芦丁型黄酮，效果满意。

The sensitivity of the proposed criterion is higher than that of the quondam criterion, and no floating threshold is used. It can judge the evolved fault quickly and correctly whether the power systems swing or not.

与目前所用的判别元件相比，该元件不需要采用浮动门槛，动作灵敏度较高，不受电力系统振荡的影响，能更准确有效地判断出系统是否发生了发展性故障。

Puerto Rico is home to the largest, most sensitive radio telescope in the world.

波多黎各坐落着世界上最大灵敏度最高的射电望远镜。400多年来，阿雷西沃天文台测量星系的运动，对金星表面进行映射，研究脉冲星物理学以及接收自外星生命的信号。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！