放射性

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。

The phenomenon was first reported in 1896 by Henri Becquerel for a uranium salt, and it was soon found that all uranium compounds are radioactive due to the uranium's radioactivity.

放射性：某些类的物质自发发射辐射的特性。1896年贝克勒耳第一个报告在铀盐中发现了这一现象，不久发现由于铀有放射性，所以所有的铀化合物都是放射性的。

"Radioactivity: Property exhibited by certain types of matter of emit ting radiation spontaneously. The phenomenon was first reported in 1896 by Henri Becquerel for a uranium salt, and it was soon found that all uranium compounds are radioactive due to the uranium's radioactivity."

放射性：某些类的物质自发发射辐射的特性。1896年贝克勒耳第一个报告在铀盐中发现了这一现象，不久发现由于铀有放射性，所以所有的铀化合物都是放射性的。

Basic nuclear physics and fundamental measuring techniques: The basic nuclear physics involves the main types of nuclear decay, law of decay, definition and units of radioactivity and the interaction of radiations and materials.

核物理基础与放射性测量技术：内容主要是核衰变的四种类型、衰变规律、放射性活度及其单位；射线与物质的相互作用，以及γ计数器及液体闪烁仪测量的基本原理和放射性测量的统计误差。

Article 58 Whoever imports radioactive wastes or radioactively polluted articles into the territory of the People's Republic of China or transfers them via the territory of the People's Republic of China shall be ordered by the customs to return the said radioactive wastes or radioactively polluted articles, and shall be imposed upon a fine of not less than 500,000 Yuan but not more than 1,000,000 Yuan in addition; if a crime is constituted, he/it shall be investigated for criminal liabilities.

第五十八条向中华人民共和国境内输入放射性废物和被放射性污染的物品，或者经中华人民共和国境内转移放射性废物和被放射性污染的物品的，由海关责令退运该放射性废物和被放射性污染的物品，并处五十万元以上一百万元以下罚款；构成犯罪的，依法追究刑事责任。

In hypergensis process uranium tend to be activate and transfer while thorium tend to enrich in the relict phase.

在我们的研究中，通过计算，得到了放射性核素浓度与核素的比放射性活度之间的定量关系，进一步推算出α、β比放射性活度与核素浓度之间的定量换算公式，这对放射性环境监测具有一定的实际意义。

This invention relates to radiotherapeutic reagents and peptides, radiodiagnostic reagents and peptides, and methods for producing labeled radiodiagnostic and radiotherapeutic agents.

本发明涉及放射性治疗试剂和肽，放射性诊断试剂和肽，和生产这些标记的放射性诊断试剂和放射性治疗试剂的方法。

Specifically, the invention relates to vasoactive intestinal receptor binding peptides, derivatives and analogues of vasoactive intestinal peptide, and embodiments of such peptides radiolabeled with a radioisotope, as well as methods and kits for making, radiolabeling and using such peptides for radiodiagnostic and radiotherapeutic purposes.

具体地，本发明涉及到具血管活性肠受体结合特性的肽，血管活性肠肽的衍生物和类似物，和用放射性同位素标记这类肽的实施方案，以及生产、放射性标记与使用这类肽的方法和药盒进行放射性诊断和放射性治疗。

Radioactivity of 〓Tc-MIBI incepted by A549DDP cells in controlling group, Rh2 group, DDP group and Rh2＋DDP group account for 0.94%, 1. 08%, 1. 13% and 2. 0% respectively of the total radioactivity. There was evident difference between the former three groups and Rh2＋DDP group P＜(0.05 . Radioactivity of 〓Tc-MIBI incepted by A549 cells was 2. 38% of the total radioactivity, obviously higher than that in controlling group (P ＜O. 05). conclusions: gensenoside Rh2 of no toxicity concentration can reverse resistance of lung adenocarcinoma A549DDP cells to cisplatin.

对照组的A549DDP细胞摄取〓Tc-MIBI的放射性活性与总放射性活性的百分比为0.94%为，Rh2组的A549DDP细胞摄取〓Tc-MIBI的放射性活性与总放射性活性的百分比为1.08%，DDP组的A549DDP细胞摄取〓Tc-MIBI的放射性活性与总放射性活性的百分比为1.13%，这两组分别与对照组比较无显著性差别（P＞0.05）；Rh2+DDP组的A549DDP细胞摄取。

The liquid radioactive contamination comes from the radioactive substances produced by the circulatory cooled water activated after neutron radiation;the solid radioactive contamination comes from the match plate in the hot working chamber,the collimation equipment...

液态放射性污染主要指加速器冷却循环水受中子照射被活化形成放射性物质；固体放射性污染为热室工作箱内的模板，退役加速器离子源、准直器和靶周围被活化的器件及与放射性制剂分装、注射相关的用品；放射性气态污染，主要指中子使空气活化产生核素11C、13N、15O、41Ar，空气中其它成份被中子活化产额低，多为气溶胶状态；另外放射性表面污染主要指加速器厅内被活化的固体器件，冷却水破裂或放射性药物意外污染，有关传递通道和贮源容器的表面放射性污染。

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。