查询词典 neutron

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。

This kind of short-distance force can let nucleus stable, so it can let a neutron-star stable.

这种短程力能使原子核保持稳定，当然也能使带电中子星保持稳定。

The temperature measurement using neutron resonance spectrum has many advantages comparing traditional techniques of temperature measurement.

中文摘要中子共振测温与传统的测温技术相比，具有很多优势。

Solar flare is one of violent solar activities. It is confirmed that flux of solar cosmic ray less than 10 GeV rises in neutron monitor.

太阳耀斑是太阳活动之一，已经确切地观测到太阳耀斑期间，中子监测器上观测到能量高达几个GeV太阳宇宙线的增强。

Furthermore, the effectiveness the PSF model is verified by numerical simulation of neutron imaging.

通过中子成像的数值模拟，验证了所建立模型的合理性。

According to the observation of the number concentration spectrum and the mass concentration of atmospheric aerosol, TSP and its particle size distribution,micrometeorology,and the solar spectroscopic radiation,even the neutron activation treatment of sand dust samples in Helan Mountainous area, the formation law of sandstrom, dust and sand blowing weather and the characteristics of climatic variation in this area and the influence of Helan Mountain are counted and analysed.

利用贺兰山地区沙尘暴历史资料和综合观测资料，对大气背景、浮尘、扬沙和沙尘暴发生期间的大气气溶胶数浓度谱、质量谱、大气总悬浮颗粒及粒径分布、微气象、分光日射观测以及沙尘样品进行中子活化处理，分析了该地区浮尘、扬沙和沙尘暴形成规律，气候变化特征和贺兰山的影响。

The laboratory is also home to the Intense Pulsed Neutron Source, the Argonne Tandem Linear Accelerator System and other facilities.

该实验室还拥有激烈的脉冲中子源，阿贡串列直线加速器系统和其他设施。

The response mechanism of a photomultiplier tube interacting with an accelerator neutron source was investigated.

分析了中子束直接照射光电倍增管产生直照响应的过程和机理。

The photomultiplier tube responding to direct neutron irradiation has an extreme effect on the scintillation detector design and its practical applications.

光电倍增管的中子直照响应对脉冲中子探测器的设计和实际应用具有重要影响。

It also introduces the discrete ordinates couple-solving method (DOT-BSTP-DOT) which uses the half-symmetric angular quadratures for core geometry and the quadratic S〓 biasing angular quadratures for duct geometry. Calibrations for several types of duct are carried out and the schemes of XPR epithermal neutron filter are successfully designed. The other international popular code ANISN is also exploited and modified.

本论文首先开发、修改了其它国际通用屏蔽计算程序DOT/4.2和MCNP/4B，编制了边界源转换程序BSTP，首次建立深穿透屏蔽计算的临界源方向偏倚与指数变换相结合的蒙特卡罗耦合抽样方法，以及堆芯几何采用半对称求积基、孔道几何采用二阶S〓偏向求积基的离散坐标耦合求解法（DOT-BSTP-DOT），并对不同孔道进行了数值校算，成功地得到了西安脉冲堆超热中子过滤器的设计方案。

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。