查询词典 sealed radioactive source

Carbon has two non-radioactive isotopes, and in material from the solar system, including most meteoritic minerals, these are mixed in a well-known ratio.

碳有两个非放射性的同位素，在太阳系的物质中，包括在大多数的陨石矿石中，它们的混合比例是众所周知的。

The r-imaging was not discovered that radioactive nuclein was gathered in liver,kidney and marrow at the secondday after injection.

术后第二天同位素扫描未发现肝、肾和骨髓的核素聚集。

The Contents of progesterone and oestradiol(E_2) in the milk of 50 Chinese Holstein cows were measured within 23 days after delivery and 12 days during oestrus with radioactive immunity.

自放射免疫激素测定技术出现后，国内外在生殖内分泌领域的研究取得了巨大进展[1~6]。

YAC is now prevailingly used as the first cloning vector for human genome analysis, but one problem that is not yet solved is the insert DNA fragment is not easily isolated from yeast chromosomes and vectors. So, we developed a new technique for the specific radioactive labelling of YAC insert by Alu-PCR technique.

因目前YAC中的插入片段还无法分离出来，因此我们对筛选到的这些YAC，用Alu-PCR技术将人基因组插入片段进行了特异扩增，并通过PCR条件的适当改变，获得较理想的标记效果。

For its well properties showing in research about immobilizing high level radioactive waste, pyrochlore which stably exists in nature has been well studied in recent years.

自然界中稳定存在的烧绿石由于在高放废物固化研究中呈现出的良好特性，近年来得到了大量的研究。

The results indicate that pyrochlore synroc has high density and waste loading, well durability and radiation stability, and it is a suitable host for high level radioactive waste as well as the final disposal of the final geological.

已有的研究表明，烧绿石人造岩石固化体具有较高的密度和包容量，良好的抗浸出和抗辐照性能，是固化高放废物和进行最终地质处置的理想固化体，具有良好的应用前景。

The safety of radioactive sources is a primary issue of radiological protection in China.

放射源的安全已成为我国当前辐射防护的一个主要问题。

Radioactive skin injury is one of the most common complications in tumour radiotherapeutics.

放射性皮肤损伤是由于放射线作用于皮肤而引起的炎症损害 [1 ] 。

Results All17patients had reiteratively blood in stools.The longest medical history of these patients is of3years,the shortest is of2months.8cases showed symptoms of stomachaches;2cases showed symptoms of peritonitis.3cases resulted in positive tests in the radioactive scanning.Of the rest of the patients,1case showeda positive test in the selective arterial angiographies.Of the17patients,12recovered completely after the operation.And no recurrence was found in the following3～5years.5patients died of the recurrence of tumor and metastasis.

结果 17例均有反复次便血，病史最长3年，最短2月，8例伴有腹痛，2例伴有腹膜炎体征，3例伴有腹块。3例核素扫描检查均是阳性，4例选择性血管造影1例阳性。17例病员无1例术明确原发病，其中15例剖腹探查直接找到病因，2例术中结合内镜找到出血原因。17例中12例经手术治疗痊愈，随访3～5年无复发。5例死于肿瘤复发转移。

The therapy of radioactive ^125I seeds implantation is safe and resultful.

放射性粒子植入治疗安全目疗效肯定，是肿瘤综合治疗的手段之一。

However it can often be frust ating for a child when people are unable to pronounce their name.

但它往往可以令人沮丧的一个孩子当人们无法断言他们的名字。

All these compounds were obtained from this genus for the first time. Compound, 4-cumylphenol, was a new nature product.

所有化合物均为首次从本属海藻中分离得到，其中4cumylphenol为新天然产物。