放射性核素

Artificial radioactivity sources are widely applied to petroleum exploration and development and probably in ways of preventing pollution in soil environment.

人工放射源在石油勘探、开采等方面得到广泛应用，放射性核素可通过多种途径污染土壤环境。

Master the conception, fundamental principle and characteristic of radionuclide tracer technique and autoradiography, the conception and classification of activation analysis.

掌握放射性核素示踪技术、放射自显影术的概念、基本原理、特点及活化分析的概念与分类。

Soft tissues of bivalves had high concentration factors for 110mAg and 65Zn.

和简单角毛藻对上述放射性核素的浓集动力学。

The nuclear reactions in the initial study, the discovery of the neutron in 1932 and in 1934 the synthesis of artificial radionuclides is a representative The results of .40 before and after the age of nuclear physics has entered a phase of great development .1939, the Hahn and Strassman found that the phenomenon of nuclear fission in 1942, Fermi established the first fission chain reactor, which is human with nuclear energy start.

在初期的核反应研究中，1932年中子的发现和1934年人工放射性核素的合成是具有代表性的成果。40年代前后，核物理进入一个大发展阶段。1939年，哈恩和斯特拉斯曼发现核裂变现象，1942年，费米建立了第一个链式裂变反应堆，这是人类掌握核能源的开端。

Radiolabeled ASODN was designed complementation to target mRNA for imaging changes in the level of gene expression in vivo.

用放射性核素标记ASODN，在体外显像可以诊断体内mRNA水平变化，肿瘤的存在和大小。

This paper describes the principle and application of correlation method in the absolute radioactivity measurement .

本文介绍用于放射性核素活度绝对测量的相关方法的基本原理、应用及其优点。

It summarizer the environmental monitoring activities carride out byin the USSR and some other countries after the accident .

本文介绍了苏联切尔诺贝利核电站事故的放射性核素释放和地面沉降特点，简述了事故后苏联和其他国家的环境监测活动并讨论了γ能谱技术在环境放射性监测中的重要性。

Result: The rabbits of osteoporosis group underwent muscle injection till sixth week, the skeleton video pictures of nuclein show that the video pictures of normal group are clear and radioactivity scatters symmetrically and evenly.

结果： 骨质疏松模型组肌肉注射DX第6周，放射性核素骨骼显像显示正常组为骨骼显影清晰，放射性分布对称、均匀。

In order to achieve the required angular resolution, a sophisticated tracking detection system was established to reconstruct the track of each incident particle, as well as each scatted particle. The upstream detection system consisted of two plastic scintillators (T1 and T2) and two low-pressure multiwire proportional chambers .

He是结构性质比较典型的丰中子核，也是RIBLL可以产生的束流强度较大的放射性核素。2001年3月，我们利用兰州近代物理研究所的放射性次级束流线装置提供的25MeV/n的〓He轰击〓Be和〓Li靶，进行了〓He+〓Be的准弹性散射的研究。

The high temperature and strong radioactivity target-source system is one of the critical techniques in ISOL.

因为涉及到强放射性及放射性核素的释放问题，靶材料及靶-源结构材料的确定是一个重要的问题。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。