查询词典 sealed radioactive source

Light source and the results of other light source measurement vary greatly, D series because of its color temperature of light source in 5000K ~ 7500K, close to the white, the display of passbys in business card printing and membership card production, observation of quadrochromatic class transmissional samples recommended D50 light source, observation business card printing and membership card making products reflecting samples recommended D65 light source.

平源和其它平源丈度的甘休不同很大，D系列的平源因为其色温在5000K～7500K，挨近不黑色，所以其外现性较好，在制卡和会员卡制作产业洋，查察草稿类的透射样本时保举拔取D50平源，查察制卡和会员卡制作品等不直射样本时保举拔取D65平源。

The first chapter of the paper mainly states the research of HPM source and HPM appliance based on the transit-time effect,the second chapter introduces a variety of HPM source in investgating course,capability,fabric,research condition,developing tendency aspects and so on,the third chapter descants HPM source based on the axial transit-time effect , the radial transit-time effect and the low diode impedance HPM source based on the axial transit-time effect,the forth chapter includes a conclusion of HPM source and HPM appliance based on the transit-time effect,and gives a assumption of the work in the future.

本文第一章主要简述了高功率微波源和基于渡越时间效应的器件的研究情况，第二章从研发过程、性能参数、结构特点、研究现状、发展趋势等方面系统介绍了各种高功率微波源。第三章则从各个方面详尽介绍了基于轴向渡越时间效应、基于径向渡越时间效应的器件以及低阻抗的轴向渡越时间振荡器，第四章则对高功率微波源和基于渡越时间效应的器件的发展做出了结论，并对以后的工作提出了构想。

There are 8.6%~10.91% foreign matter in the sphenes, in which radioactive elements of strontium, cesium and uranium range from 4.26% to 4.58%. The change of structural cell parameters of sphenes is still very little,Δa=-0.0009 nm~0.0041 nm,Δb=0.0018 nm~0.0004 nm,Δc=0.0002 nm~0.0048 nm,Δβ=-0.10°~0.09° with high crystallinity of 99.27%~96.46%. Though, the age of sphene from the Fenghuang Mountain is about 1000 Ma, and experienced 775 Ma~1758 Ma geological evolvement and alpha decay, its crystallinity only decreased 3%, and its crystal shape and structure are still fine, indicating that sphene is of good ability to solidify radioactive elements. Therefore, sphenes are ideal minerals for solidifying nucleus waste.

通过对北祁连牛心山变质杂岩体中榍石(775Ma)和山西凤凰山花岗岩中榍石(1758Ma)的XRD及EDS等测试与研究，结果表明：两地榍石的杂质元素质量分数高达8.6%~10.91%，放射性核素锶、铯和铀的质量分数达4.26%~4.58%；晶胞参数的变化极小，△a=-0.0009nm~0.0041nm、△b=0.0018nm~0.0004nm、△c=0.0002nm~-0.0048nm、△β=-0.10°~0.09°，结晶度仍高达99.27%~96.46%，榍石经过10×10^8a的地质作用，结晶度仅减少了3%，显示榍石固化放射性系列核素的能力较强，虽经历了约775Ma~1758Ma的复杂地质演化及其所含放射性核素的衰变作用，其晶体结构完好，稳定性极高，是值得期待的理想核废物固化矿物。

It is important that studying gamma ray spectrometry of field rocks and soil in the earth抯 crust. Their energy range are mainly 30-3000keV, they contain abundant information of natural radioactive nuclides, such as uranium, thorium, potassium, etc, and of artificial radioactive nuclides from nuclear engineering activity, such as cesium, americium, cobalt, etc, and of the results in interaction between gamma ray and earth抯 crust.

国外近年已经生产出大于256道的伽玛射线能谱仪，但由于仪器应用滞后于仪器研究，且仪器稳谱未完全解决，获取全谱信息困难，加之对低能谱段的认识不足等原因，致使野外应用仍然滞留在仅限于测定铀钍钾含量的伽玛能谱测量水平上。

The continuous electrodeionization technology was used in low-level radioactive wastewater treatment to minimize radioactive wastes and energy consumptions, with Cs, Co, and Sr chosen as the typical fission products of pressurized water reactor.

为满足低放废水处理在放射性废物最小量化和节能降耗方面的要求，研究如何利用连续电除盐技术处理低放废水。

Prepare 131I-labbelled anti-CD20 monoclonal antibody using lodogen iodine labelling;(2)Measure the immunity activation of labbelled antibody by means of both cell combine analysis and LDH cytotoxicity detection kit;(3)Evaluate the injury rate of tumor exposed to 131I-chimeric anti-CD20 monoclonal antibody in vitro. The MTT method and the experiment of cell growth control are used;(4)Record the apotosis of Daudi cell using gelose electrophoresis;(5)Learn the inhibition effect of radioactive medication on the marrow. Radiohnmunoimages are taken on various intervals after injection of the labeled antibodies to the nude mice. The distribution of radioactive medication, I31l-labeled antibodies, in the marrow tissue indicates the inhibition effect. Here a B cell non-hodgkin lymphoma model in nude mice is established by us;(6)28-day observation are done in 3 groups of nude mice model.

(1) 用lodogen标记法制备131I-国产人鼠嵌合抗CD20单抗；(2)采用细胞结合分析法和乳酸脱氢酶法细胞杀伤性实验测定131I标记后国产人鼠嵌合抗CD20单抗与靶细胞的免疫活和利结合能力；(3) MTT法和细胞生长抑制实验测定131I-国产人鼠嵌合抗CD20单抗的体外杀瘤活性；(4)用琼脂糖凝胶电泳法研究131I-国产人鼠嵌合抗CD20单抗致Daudi细胞凋亡；(5)建立荷人B细胞淋巴瘤移植瘤裸鼠模型，应用γ计数法检测注射到荷瘤裸鼠体内的131I-国产人鼠嵌合抗CD20单抗的组织分布情况，明确其靶向性；(6)将荷瘤裸鼠分3组进行放射免疫治疗，分别为阴性对照组、131I-国产人鼠嵌合抗CD20单抗组、国产人鼠嵌合抗CD20单抗组。

3 The poisonous, harmful or radioactive workplace is prone to contingent occupational injuries or the transportation/storage of radioactive isotope fails to meet the provision of Article 23 hereinabove

可能发生急性职业损伤的有毒、有害工作场所、放射工作场所或者放射性同位素的运输、贮存不符合本法第二十三条规定的

Any of several radioactive gases that are isotope s of radon and are products of radioactive decay.

"几种氡的同位素的放射性气体，是放射性物质衰变的产物。"

This research is to provide a new ＂drug＂ that the paramagnetic radioactive isotopic nanometer-iron for treatment tumor, it have some characteristics comprising the paramagnetism and the radioactive activity, it can be located to the position of focus with three-dimensional rotating magnetic field.

本文提出一种新型的抗肿瘤药物——顺磁纳米铁核素，它具有超顺磁性、放射性活度和较好的磁导向功能的特点，在引导磁场的作用下可有效定位于靶区。

The aim of radiation protection at nuclear power plants is to set up and to maintain effective defense against radiation hazard,and the main tasks are radiation dose control,radioactive contamination control and radioactive material control.

核电站辐射防护的目的是建立并维持对放射性危害的有效防御，其主要任务是辐射剂量控制、放射性污染控制和放射性材料控制三个方面。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。