探测器

Under the condition of the borehole and sandstone formation filling with oil and water, respectively, the ability is different when different energy windows are selected to distinguish formation by simulating the detector response spectrum of various diameters and length of NaI and BGO crystal. The C/O value difference of BGO crystal is higher than that of NaI crystal when the energy window includes photoelectric peak, the first and the second escape peaks, but it is less affected by the different sizes of detector crystal. Using photoelectric peak corresponding to the energy window, the C/O value difference of BGO crystal detector is much larger than that of NaI, but it increases with the crystal size increasing. The C/O value is greatly affected by energy drifting, while relatively a little by energy resolution.

对于井眼和地层流体分别为油和水砂岩地层，模拟改变NaI和BGO晶体探测器的直径和长度时的非弹性散射γ射线响应能谱，采用不同能窗处理方法对地层流体的分辨能力不同，选取光电峰和第一、第二逃逸峰对应的能量窗时，BGO晶体探测器比NaI晶体探测器测量的C/O差值大，但受尺寸的影响不大；采用光电峰对应的能量窗时，BGO晶体探测器测量的C/O差值比NaI的大得多，且随尺寸的增加差值增大；能量道的漂移对C/O值影响较大，而能量分辨率对差值影响相对较小。

It includes: the selection of detector crystal, the design of geometrical dimension of the detector, the magnetic shield of detector, shield of fast neutron and thermal neutron, distribution of fast neutron in formation, the investigation depth of logging tools and the spacing.

本文第三章介绍了对双晶C/O能谱测井仪研制过程中遇到的主要物理问题进行研究的情况，内容包括：探测器晶体选择、探测器几何尺寸设计、探测器磁屏蔽研究、快中子屏蔽、热中子屏蔽、快中子地层分布、仪器探测深度及源距等。

Using 60Co γ-rays and 70～180 keV X-rays,the test results show that saturation characteristics of the cavity ionization chamber meet the requirement of DIS detector. Direct Ion Storage detector,tissue-equivalent cavity ionization chamber,MOS field effect transistor,saturation characteristic curve

本文从探测器原理出发，设计与研制DIS探测器中组织等效空腔电离室，重点从壁材料、气体成分、腔体形状和尺寸、壁厚度以及绝缘材料等角度，测试电离室辐射性能，以为研制新型DIS探测器奠定基础。1DIS探测器原理图1直接电

You can read about smoke detectors in more detail in How Smoke Detectors Work, but the first one to hit the consumer market is called the ionization smoke detector.

你可以在烟雾探测器的工作原理一文中了解更多有关烟雾探测器的细节，但是第一款震撼消费者市场的烟雾探测器称为：电离式烟雾探测器。

J14TE3 Series 3-Stage Thermoelectrically Cooled PbSe Detectors: The J14TE3 Series detectors are high quality temperature stabilized PbSe detectors mounted on a three-stage thermoelectric cooler with a thermistor for control and stabilization of the detector element.

j14te3系列三阶段thermoelectrically冷却pbse探测器： j14te3系列探测器的高品质温度稳定pbse探测器安装在一个三阶段的热电冷却器与热敏电阻器，为控制和稳定该探测器的元素。

J14TE1 Series 1-Stage Thermoelectrically Cooled PbSe Detectors: The J14TE1 Series detectors are high quality temperature stabilized PbSe detectors mounted on a one-stage thermoelectric cooler with a thermistor for control and stabilization of the detector element.

j14te1系列1阶段thermoelectrically冷却pbse探测器： j14te1系列探测器的高品质温度稳定pbse探测器安装在一个一期热电冷却器与热敏电阻器，为控制和稳定该探测器的元素。

The origins of disturbed signals were analyzed for different earthed-conditions between PZT and sample. It is best to ensure that the upper surfaces of PZT and sample have independent earth wire respectively, and for semiconductors, an insulation glue between the PZT and sample was chosen.

在结构设计合理的探测器组件基础上，分析了探测器材料和样品在不同的接地状态下干扰信号的产生原因，指出了样品与探测器的上表面最好同时接不同的地线，而对半导体类样品，样品与探测器之间最好采用电绝缘的耦合剂。

The Fish ID feature gives more information on location than a traditional single beam: Fish in the narrow beam are displayed as solid fish symbols; fish in the wide beam are shown as hollow fish symbols.

双探测器相比单探测器可以提供更多的鱼类信息：窄束探测器探测到的鱼类在显示屏上显示的是实体形状，而宽幅探测器探测到的鱼类在显示屏上显示的是空心的形状。

In addition to the basic configurations such as door magnetic detector and passive infrared detector, it is still compatible with smoke detector, noxious gas detector, active correlation detector, glass break detector and high-pitch alarm.

除了基本配置门磁控测器、被动红外探测器外，本系统还兼容烟雾探测器、有害气体探测器、主动红外对射探测器、玻璃破碎探测器、高音警号等系列设备，用户可购买增配。

The experimental results show that the response time of the GaAs detector is about 100 ps and is independent of the bias voltage. However, it is dependent on the conditions of measurement system. The method of neutron irradiation and techniques change can improve the response time of the detector. The relationship between the sensitivity and the bias voltage is linear.

实验结果表明：SI-LEC GaAs光电导辐射探测器时间响应约为100 ps，与探测器偏压无关，但受测试系统的影响较大；用中子辐照改性和改进工艺的方法可提高探测器的时间响应；探测器的直流激光响应与偏压则呈线性关系。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。