pmt

Using coincidence method, transit time spread ( TTS) is measured with Cherenkov light produced by cascade γ radioactive source, 60Co on photocathode window of photomultiplier tube ( PMT).

采用符合方法，测量级联γ放射源60Co在光电倍增管（PMT）光阴极窗上激发产生的切伦科夫光，从而测定PMT渡越时间涨落。

The non-isothermal degradation of PMT was not first order reaction and two degradation stages were identified.

研究发现,PMT的热降解过程包括两个主要失重阶段,其热分解反应不是一级反应.

The Application of Photon Counter PMT in Fluorescence Check and Measure System

光子计数式PMT在荧光检测系统中的应用

A 2-DOF ( Degree-Of-Freedom) parallel translational mechanism and a 2-DOF spherical five-bar mechanism are used to realize the translational and rotational degree of freedom of the PMT and a new type synthesis of a new typed five-axis hybrid machine tool is given.

采用一种二自由度并联平动机构和球面五杆机构分别实现并联机床的平动与转动自由度，提出了一种新型五轴混联机床的新构型。

The trigger signal at the same time is used as the light source driving signal. We number each PMT separately and record the measurement results in the database systems.

触发信号同时作为光源驱动信号，每个PMT进行分别编号，测量结果记入数据库系统。

Analysis and Research of Dark Current in High Speed MCP PMT

快速MCP型光电倍增管中暗电流的分析与研究

First, this study compares thick source ZnS alpha-counting calibration results of the photomultiplier tube ( PMT) high voltages and thresholds calibrated by the oscillograph with those by different sources.

利用不同标定源对美国Daybreak582、583型低本底厚源ZnSA1pha计数仪光电倍增管高压（HV）和积分甄别器阈值电压（DISC）进行了标定，并与示波器标定结果进行了对比。

Parallel Machine Tool ( PMT) is a new kind of manufacture equipment came forth in the middle of 90s. It combines mechanics theory, robot technique and numerical technique.

并联机床PMT（Parallel Machine Tool）是上个世纪90年代中期问世的新型制造装备，它是机构学理论、机器人技术和数控技术结合的产物。

Results The number of projecting AChE fibers to the cortex and the hippocampus in PMT group was larger than that in the control group, and no morphological destruction was seen in the experimental group ( P < 0.01).

结果：何首乌喂饲组与非何首乌喂饲组相比，其投射到海马及大脑皮质的AChE纤维数目多，纤维形态无破坏，差异有显著性（P<0.01）。

Coil coatings was thermal analyzed and researched with DSC in order to test glass transition temperature ( Tg) of the paint film at the maximum precoated metal temperature ( PMT) and determine the optimal curing conditions of different coil coatings.

采用DSC进行卷材涂料热分析研究，测试在不同PMT（最高金属板温）下漆膜的Tg，以确定各种卷材涂料的最佳固化条件。

Suitable for low-light-level detection applications, the photomultiplier tube ( PMT ) provides extremely high sensitivity and ultra-fast response.

适合微光探测应用, 光电倍增管 ( PMT ) 提供极高的灵敏度和 超快速 响应.

The data acquisition system is based on VME systems, making use of multiple QDC ( 16 Channels) for 16 PMT signals.

光源由LED和激光提供，通过分光系统为多个光纤提供信号。数据获取系统基于VME系统，使用多路QDC（16路）同时获取16路PMT信号。

Calibrations showed good linear relationship between photon counts of PMT and concentration of ozone generated by standard ozone calibrator, up to 50 ppb ( parts per billion by volume).

采用标准臭氧发生器标定的结果显示，在0￣50×10-9（体积比）的浓度范围内，化学发光的光子计数值与臭氧浓度之间的线性关系很好。

Develop confidence and persistence through mastery of Personal Management Technology ( PMT ).

以自我管理技术为手段,实现自信和毅力的全面提升!

Conclusion: Extract of Polygonum multiflorum Thunb. ( PmT ) have effect of decrepit obviously.

结论: 何首乌提取物具有明显的抗衰延寿作用.

Secondly detection technique of weak fluorescence was studied and double detection circuit which comprise of PMT, PIN detector, the circuit of signal amplified, the circuit of low-pass filter and Boxcar integrator was designed.

其次，研究了微弱荧光信号的检测技术，设计了由光电倍增管和PIN探测器，前置放大电路、滤波电路，Boxcar取样积分器组成的双通道检测电路，完成了对背景噪声中微弱荧光信号的提取。

method of improving the detectability of photon counting system based on pmt

提高PMT光子计数系统探测灵敏度的方法

Non optical methods of sample tip distance regulation based on shear force which include emission detection with PMT, quartz tuning fork, capacitance, piezoeffect, impedance are reviewed in this paper.

本文综述了扫描近场光学显微镜发展以来所出现的基于剪切力原理进行样品／探针间距的探测的一些主要的非光学方法。

On the BOD_5/ COD_ ( Cr) ratio's effect on the performance of artificial YDT and PMT media packaged contact oxidation tank for raw water pretreatment

人工YDT及PWT填料接触氧化池生物预处理效果与原水BOD5/COD（Cr）的关系

The photoelectric detectors of the lidars developed by our Laboratory& Key Laboratory of Ocean Remote Sensing, Ministry of Education, Ocean University of China, are PMTs, so the study of PMT is important.

中国海洋大学海洋遥感教育部重点实验室研制的多套激光雷达的光电接收器件选用的都是光电倍增管，因此研究光电倍增管具有一定的应用意义。

processing of the signal of pmt based on waveguide multi-layer optical memory

基于波导多层存储的PMT输出信号的处理

Preliminary design of PMT trigger module for Daya Bay neutrino reactor experiment

大亚湾中微子实验PMT触发判选电路的初步设计

Study of timing voltage divider system of PMT for neutron wall at CSR terminal

CSR系统终端中子墙光电倍增管时间型分压系统的应用研究

In this way, the light flux received by PMT is the fluorescence produced by chlorophyll-a.

通过脉冲氙灯的每次闪光强度与光电倍增管所检测的荧光强度之比来表征叶绿素a的浓度.

Conclusion PMT has protective effect on the rat AChE neurons and their projecting fibers.

结论何首乌对大鼠AChE神经元及其投射纤维有保护作用。

The basic error classification of the PMT is introduced, including static error and dynamic error mostly.

介绍了并联机床误差的基本分类，主要分为静态误差和动态误差两大类。

This paper introduces that the DT pulse neutron takes on the waveform with burred feature because of fluctuation of particle statistic when it is measured through the PMT scintillant detector.

介绍了在用PMT闪烁探测器测量脉冲中子产额时，由于粒子的统计涨落而使脉冲波形呈现毛刺现象。

Results Compared with model rats, the rats treated by middle and high-dosage of PMT, the learning-memory ability of was better, the SOD activity of was higher and the MDA concentration of was lower ( P < 0 05).

结果中高剂量何首乌灌胃组与模型组相比：大鼠学习记忆能力和海马区SOD活性均显著增高（P<005），MDA含量显著降低（P<005）。

five independent parameters represent five degrees of freedom. geometry constraints are the main factor influencing the workspace of pmt.

通过分析得出本机床五个独立参数表示的五个自由度，并用螺旋理论进行了验证。

Roth, the measurement method of platform is developed. Experiments on the PMT are done by this method, and spherical joints' ( Huke joints ') errors and legs' tolerance of every leg using experiment data are calculated.

Roth的方法建立了本机床平台的测量方法，利用此方法对机床进行实验，通过实验数据求出每个杆的铰链点误差和杆长误差。