查询词典 radioactivity

The air survey is specially superior in the regional environmental radioactivity survey, which is recommended by IAEA.

在区域环境放射性测量中，航测具有特殊的优势，是IAEA推荐的手段。

We have established the perfect metrological standard equipment and calibrating method, we have had the ability to provide the metrological assurance for the environmental radioactivity air survey.

在核设施退役过程中，通过航测全面掌握拟退役核设施及周围地区的放射性辐射现状，为核设施退役的放射性治理在范围和程度上提供了科学有效的数据，可以有效地支持核设施的安全退役。

We have shown that it is possible to create a radioactivity characterized by the emission of positive or negative electrons in boron and magnesium, by bombardment with alpha rays.

我们已经展示了人工放射现象的可能性，这种放射现象的特征是用以射线轰击用咄硼和镁中的正电子或负电子。

Intelligent nuclear instrument has been a dominant developing direction of radioactivity measurement instrument. The instrument for radon measurement of air pulse ionization chamber, based on the theory that alpha rays decayed by radon and its progeny can ionize the air molecules, can measure the radon concentration accurately.

智能核仪器已成为放射性测量仪器发展的一个主导方向，利用氡及其子体衰变放出α射线能使空气分子电离的理论设计的空气脉冲电离室α测氡仪可以准确地测量空气中的氡浓度。

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。

The discovery of the artificial radioactivity pulled the prelude of nuclear fission. The Joliot- Curie couple played an important role in the discovery of nuclear fission.

人工放射性的发现拉开了核裂变发现的序幕，约里奥-居里在核裂变发现过程中也起到了重要的作用。

Only the brain areas that distributing of radioactivity diminution in interictal SPECT, in the same time, distributing of radioactivity heighten in ictal SPECT should be sure of epilepsy focus.

目的 探讨发作间期及发作期单光子发射计算机断层扫描在脑软化灶导致癫痫的伽玛刀治疗中的运用。

Rnsults There were brain areas that distributing of radioactivity diminution in interictal SPECT in all 69 cases ,and there were brain areas distributing of radioactivity heighten in ictal SPECT in all 69 cases.

结论伽玛刀治疗脑软化灶导致的癫痫是有效的，而且无痛苦、无出血、无感染、无死亡、术后恢复快，其中以局限性发作效果最好；对脑软化灶导致癫痫的患者行SPECT检查，只有发作间期放射性分布减低和发作期增高在同一脑区才被确认为致痫灶；以上方法可明显缩小靶区体积。

The results were as follows: Both the 32P specific radioactivity and32P total radioactivity in panicle,leaf,stem and sheath,root of rice plant treated with 10—50 mg/L ALA were significantly higher than that of the control(0 mg/L ALA).

结果表明，10～50.mg/L.ALA处理稻株的穗、叶片、茎鞘、根系中的32P比活度和放射性活度均显著高于不喷施ALA的对照处理；10～50mg/L。

ND-1 scFv was labeled with 〓Tc by MTD.〓Tc-ND-1 scFv was injected into mice bearing the CCL-187 xenograft for biodistribution study, radioactivity in blood, tumor and normal tissue was determinated at various time periods following injection by a gamma scintillation counter, and the ratios of radioactivity between tumor tissue and normal tissue were evaluated. Radioactively- labled scFv displayed rapid localization in tumors. Accumulation was found in tumors in high concentrations 1 hour after injection, and scfv uptake in tumor was 2.6 times higher than in blood. The T/NT for blood, liver, spleen , hear, lung and kidney were 2.61, 1.85 1.94, 1.75, 0.83 and 0.22 respectively.

将ND-1scFv与同位素〓Tc偶联制备〓Tc-ND-1scFv，注入荷瘤裸鼠体内，观察了偶联物的体内生物学分布，结果显示，〓Tc-ND-1scFv在荷瘤裸鼠体内的生物学分布带有明显的肿瘤积聚趋向，注射1小时后即可选择性地积聚于肿瘤组织，其放射性明显高于大多数正常组织，除肾脏和肺外T/NT值均大于1.2，而完整的ND-1完成同样的积聚则需要20-24小时。

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。