放射性材料

Measurement of gamma ray activities can be transformed to that of alpha ray and beta ray activities. When natural radionuclides are well distributed in materials, there is fixed interrelationship between alpha ray and beta ray activities in any part of a decorative material and alpha ray and beta ray surface activities.

同时，ICRP和IAEA都已明确我国《放射卫生防护基本标准》GB4792-1984对公众的剂量限值不适用于天然放射性，而我们的国家标准仍使用土壤的剂量转换因子和公众的年剂量限值来推导建筑材料的核素限量。

Article 307While consigning for transport such dangerous goods as inflammable, explosive, toxic, corrosive or radioactive articles, the consignor shall, in accordance with the regulations of the State on the transport of dangerous goods, properly package the dangerous goods, affix thereto warning signs and labels, and submit to the carrier written documents concerning the name, nature and precautional measures relevant to the dangerous goods.

第三百零七条托运人托运易燃、易爆、有毒、有腐蚀性、有放射性等危险物品的，应当按照国家有关危险物品运输的规定对危险物品妥善包装，作出危险物标志和标签，并将有关危险物品的名称、性质和防范措施的书面材料提交承运人。

In this paper, radioactive pollution derived from the stone-coal related building materials of our country is analyzed.

对我国与石煤有关的建筑材料的放射性污染状况进行了分析。

Along with the higher and higher requirements of the large-sized and ultra-large integrated circuit on the covering materials, it is necessary to be superfine as well as to be high-purity and low radioelement content, especially on particle shape.

随着大规模、超大规模集成电路对封装材料的要求也越来越高，不仅要求超细，而且要求其有高纯度、低放射性元素含量，特别是对于颗粒形状提出了球形化要求。

This article reviews the advances in researches of radionuclide therapy materials applied for internal raditherapy for tumor.

文摘：本文论述了放射性核素治疗材料用于内介入放射治疗肿瘤的研究。

Since the y -ray's self-absorption of radiate materials is a very important factor, which depends on the geometry of the materials.

而其中γ射线的自吸收，是影响谱线分杉析精度的一个极为重要的物理量，它与放射性核材料的几何尺寸有密切的关系。

Article 307 When shipping such dangerous articles as are inflammable, explosive, corrosive or radioactive, a shipper shall appropriately pack the articles in conformity with the rules of the State governing the carriage of dangerous articles, and put on the marks and labels for dangerous articles and submit the written papers relating to the nature and measures of precaution to the carrier.

第三百零七条托运人托运易燃、易爆、有毒、有腐蚀性、有放射性等危险物品的，应当按照国家有关危险物品运输的规定对危险物品妥善包装，作出危险物标志和标签，并将有关危险物品的名称、性质和防范措施的书面材料提交承运人。

Product this measure, belong to, have radioactive class A product by China national construction material industrial radioactivity and harmful substance supervision and inspection center, production and sales and using unrestrictedly.

该 产品经中国国家建筑材料工业放射性及有害物质监督检验测试中心检测属于无放射性A类产品，生产销售和使用无限制。

Upholstery with paint, plywood, shaving board, and other materials were thrown paint containing formaldehyde, benzene and other organic vapour, but also building materials, radioactive substances have considerable carcinogenic.

室内装饰用的油漆、胶合板、刨花板、内墙涂料等材料均含有甲醛、苯等有机蒸气，还有建筑材料中的放射性物质都具有相当的致癌性。

For example imitation board and its products with the European edition of formaldehyde "shaving board," the standard indicators consistent; Solvents, benzene-based paint wooden limited value and the "Community eco-labelling products -- Seqi and varnishes ecological commands" the same; Carpet, carpet pad and carpet products used Jiaonianji divided into A, B levels, a level of environmental protection - which the limited value with the United States under the carpet Association standards volatile organic compounds, formaldehyde, and other indicators of the same; the conditions of application of radioactive materials into civil construction and industrial materials of construction, civil construction is divided into one category and class civil construction, and then, in accordance with A, B, C classification.

比如人造板及其制品中的甲醛限量与欧洲&刨花板&等有关标准的指标相一致；溶剂型木器涂料中苯的限量值与&欧共体生态标志产品―――色漆和清漆生态指令&相同；地毯、地毯衬垫及地毯用胶黏剂产品分为A、B两级，其中A级环保型的限量值与美国地毯协会标准规定的挥发性有机化合物、甲醛等指标相同；建筑材料放射性把材料适用条件分为民用建筑和工业建筑，民用建筑又分为一类和二类民用建筑，然后按照A、B、C分类。

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。