目的建立一种电离测量法14 c尿素呼气试验,用于快速检测幽门螺杆菌感染。
Objective To develop a novel 14 C-urea breath test (UBT) with Geiger-Muller counters for detection of H. pylori infection.
当时他们用这种激光来激发并电离那些被火焰的高温裂解出来的原子,目的是测量不同火焰的特征辐射。
They were using the laser to excite and ionize the atoms liberated by the heat of the flame in order to measure the characteristic emissions of different flames.
本文介绍了测量金属及非金属材料厚度的测厚电离室系列的原理、结构及各种性能。
This paper introduces the principle, construction and performances of ionization Chambers for measuring the thickness of metal and nonmetal materials.
对两种预电离源的放电电压和电流进行测量,得到瞬态信息。
The transient discharge voltage and current of the two pre ionization sources were measured also.
并对应用电离法测量逸出气氡的连续自记观测技术进行了预研究试验。
The authors also studied the continuous self-recording technique by using the ionization method to measure the Radon gas.
在电离气体变色发光实现的基础上,测量了光谱相对功率分布。
On the basis of the realization of variable color luminescence in ionized gases, the relative spectral power distribution was measured.
该研究为电离层不规则结构纬向漂移速度的测量提供了一种可行的方法。
This research will provide a feasible method for measurement of the ionospheric zonal velocity.
提出一种测量金激光等离子体电荷态分布与平均电离度的X射线光谱学诊断方法。
In this paper, a diagnostic method of average ionization degree by X-ray emission spectra of laser-produced gold plasma was presented.
上述电离室可作次级标准伦琴计和防护剂量测量用。
All of them can be used as secondary standard Rontgen meter and in protection dose measurement.
方法:利用电离室法测量平野、动态楔形野、物理楔形野的深度剂量和射野外周边剂量。
Methods: The depth doses and peripheral doses were measurement for open field and Enhanced Dynamic wedge field as well as physical wedge.
建立了一种用于解释正电子寿命谱测量结果的模型,该模型中费米能级位置的改变可影响缺陷的电离以及正电子在缺陷位置的被捕获。
The average positron lifetimes was explained by a proposed model, in which the shifting of Fermi-level affects the defect ionization and consequent positron trapping at defects site.
利用该装置测量了一氧化碳分子的光电离效率曲线及其离子碎片的部分光学振子强度密度。
The photoionization efficiency curve and the partial optical oscillator strength densities for different fragments of CO was determined by this work.
根据汽油机燃烧过程中火焰电离的原理,成功地试制了一台火焰传播测量仪。
Based on the flame ionization principle, a flame detector was developed to investigate the flame propagation inside the gasoline engine cylinder with TJ-jet combustion system.
本文报道用双色三光子共振电离法测量钐原子高激发态78个新能级。
The paper reports the measurement of 78 high-lying levels in samarium atoms by two-colour three-photon resonant ionization.
本文报道了测量多光于电离谱的一整套硬件和软件系统。
We report the hard and software systems for measuring multiphoton ionization spectra.
该监测系统采用高气压氙气电离室作为探测器,以8051单片计算机作为控制主机,电路上采用弱电流测量方法。
This system consists of high pressure ionization chamber detector filled with Xe gas, 8051 single chip control unit and low current measuring amplifier.
本文测量了X光预电离脉冲雪崩放电准分子激光增益的时间和空间特性。
Time dependent gain characteristics and gain spatial distribution of X-ray pre-ionized pulse avalanche discharge XeC1 excimer laser have been measured.
研制成功了三种结构的具有管型电子倍增器的电离规,企图解决低到10~(-14)托的压强测量问题。
Three types of ion gauges with tube electron multiplier are developed. It intends to solve the low pressure measurements up to 10~(-14) torr.
推导了三种载波相位观测量线性组合的模型:宽巷组合、窄巷组合和无电离层延迟的组合。
Three kinds of models of carrier phase observation value linear combination are deduced such as wide lane, narrow lane and free ionosphere.
软X线稀有气体电离室作为软X线波段绝对探测器,是通过测量光电离子流得出光谱辐射强度。
The technique of soft X-ray ion chamber includes the measurement of the ion current as a function of rare gas pressure in the ion chamber.
在治疗计划系统中算出电离室所在区域的吸收剂量为计划剂量,按验证计划照射测量到的电离室吸收剂量为实测剂量,将二者进行比较得出误差。
Ionization chamber area dose calculated in TPS is plan dose, while the dose measured by ionization chamber according to QA plan is actual dose, Compare plan dose and actual dose then get the error.
低能电子碰撞原子内壳层电离截面测量的研究在理论和实际应用方面都具有重要意义。
The study of atomic inner-shell ionization cross-sections by low-energy electron impact is significant in both theoretical researches and practical applications.
用三台可调谐脉冲染料激光器三步共振电离方法,测量了铀原子在电离限附近的能级。
A large number of levels of atomic uranium near the ionization limit have been studied using three-step resonant ionization method with three pulsed tunable dye lasers.
在GPS的广域、局域增强导航系统和rtk的应用中,电离层延迟改正的准确度都是决定测量定位结果能否达到精度要求的重要因素。
The accuracy of ionospheric delay correction is an important factor that affects the positioning precision in the applications of GPS in wide area, local area navigation systems and RTK.
由于地面电离层多普勒频率偏移测量具有时间连续、设备相对简便等固有特征,它特别适合于扰动监测。
The measurements of HF Doppler shift in the ionosphere have long been a powerful tool in monitoring the ionospheric disturbances due to its features of continuity in time and simplicity.
基于电离层总电子含量与太阳活动性之间的线性相关关系,利用在新乡长期测量所得的电离层总电子含量的资料,得出了总电子含量的一种经验模式。
Based on the linear correlation between the ionospheric total electron content (TEC) and solar activity, an empirical model of the TEC is derived using the measured data of the TEC at Xinxiang.
用电离室作辐射剂量学的绝对测量,用胶片法进行相对测量,给出了测量结果并进行了讨论。
The absolute dosimetry is determined using ionization chamber. The relative dose profile is measured by film. The test results are presented and discussed.
借助于电离流时间衰减曲线,测量得出了上述三条谱线对应的振动能级的动力学参数。
With the measurement of ion current decay curves of the three features, dynamic parameters of them were obtained.
在电离真空规的线性测量上限部分,离子流随着压强上升而衰降。
Beyond the upper limit of the linear region of an ionization gauge, there is a falloff in the ion current with the increase of the measured pressure.
在电离真空规的线性测量上限部分,离子流随着压强上升而衰降。
Beyond the upper limit of the linear region of an ionization gauge, there is a falloff in the ion current with the increase of the measured pressure.
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