放射性

Save United States wilderness: Old-Growth in the Cascades; western U.S. wilderness; Palmyra Atoll with 16,000 acres of reef

保护美国的荒野，包括散布在各地的古老物种、美国西部的荒野和16000个受到放射性污染的危险区域。

A radioactive decay series; the paraffin alkane series.

放射性蜕变的系列；链烷烃系列。

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。

Air is perfectly elastic .

镭和铀是放射性很强。

Group in the periodic table there are silver-white metallic luster of the solid metal transition element, atomic number Z = 26, atomic weight of 55847, chemical symbol Fe, there is a stable F isotope 5626Fe and a radioisotope 5526Fe, content of 5% of the earth's crust, accounting for elements of in the fourth place, the metal in the second melting point 1535 ℃, boiling point 2750 ℃, the relative density of 786, the external electronic structure 3d64s2, chemical reactions 2-6 tram F-volatile son, oxidation number of 0, 2, 3, 4 , 5 and 6, the chemical nature of the metal element is very lively, in the humid air combined with oxidation, but also directly with the sulfur, phosphorus, silicon, carbon together.

周期表中Ⅷ族有银白色金属光泽的固体金属过渡元素，原子序数Z＝26，原子量55847，化学符号Fe，有一种稳定F同位素5626Fe和一种放射性同位素5526Fe，地壳中含量5％，占元素中第四位、金属中第二位熔点1535℃，沸点2750℃，相对密度786，外围电子结构3d64s2，化学反应时易丢失2—6个电F子，氧化数为0、＋2、＋3、＋4、＋5和＋6、化学性质很活泼的金属元素，在潮湿空气中能与氧化合，也能直接与硫、磷、硅、碳化合。

Bilateral inferior petrosal sinus sampling is considered the gold standard for establishing the origin of ACTH secretion, and it is recommended in patients with ACTH-dependent Cushing's syndrome whose clinical, biochemical, or radiological studies are discordant or equivocal.

双侧岩下窦取血法被认为是确定ACTH产生来源的金标准，推荐用于ACTH依赖性库兴症患者，这些患者往往临床，生化和放射性检查结果不一致或可疑

Ventricle and lumbar puncture and cerebrospinal fluid of double or phenol red test to identify radionuclides.

这点可通过脑室及腰椎双重穿刺和脑脊液酚红或放射性核素试验来鉴别。

Pierre:You mean then that there is something about that rock that gives off rays of its own-rays powerful enough to go through black paper and affect this photographic plate.

皮埃尔：你是说这块矿石有某种特性，能够自己发光，而且光线很强，能够穿透黑色的纸，并对底片产生作用。例2（玛丽萌发深入研究放射性的念头

Results Capillary electrophoresis detected the 1/600 of the PCR product from 20 picogram of male DNA, as amount of DNA in 3～4 cells.

放射性同位素标记可提高检测灵敏度，但操作复杂、且受一定的条件限制。

We are also indebted to Pierre Curie for basic research in the field of radioactivity, which has been carried out either alone, in collaboration with his pupils.

我们也非常感谢皮埃尔·居里在放射性领域所做的基本研究，无论这些研究是他独立完成的还是与学生合作完成的。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。