核素

Either of them predisposes the spleen to torsion.1 Acquired wandering spleen can also arise in multiparous women during pregnancy when ligamentous laxity occurs owing to hormonal changes.2 Chronic torsion can cause splenomegaly.

腹痛由脾脏包膜的收缩或局部腹膜炎引起。此外，尚可见贫血、白细胞计数增多，乳酸脱氢酶升高等。影像检查主要包括超声、CT、核素成像、血管造影。

The measured spectra are analysed with the multiplet alpha spectra analysis program MULT. Thus the alpha-particl probabilities of the five nuclides are obtained.

放射源的α能谱，用多重峰α能谱分析程序MULT对所测α能谱进行非线性分析，获得了这几种核素发射α粒子的辐射几率。

Keywords Actinide nuclides Multiplet α-spectra α-particle emission probabilities Total uncertainty

锕系核素；多重峰α能谱；α粒子辐射几率；总不确定度

objective: to study the application of radionuclide bone imaging in diagnosing multiple myeloma.

目的：探讨核素骨显像在多发性骨髓瘤诊断中的应用。

This method of drug delivery involves immobilization of drug or radionuclide in biocompatible magnetic nano- or microspheres.

这种药物的运输方法涉及在生物相容的磁性纳米或微米球上固定药物或放射性核素。

The concentration of neptunium and plutonium is extremely low in environmental samples. Additionally such samples have a complex matrix composition, which is to be taken into account for a proper analysis.

环境样品基体复杂，铀、镎和钚等锕系元素含量非常低，在复杂的生态条件下，这些核素常常具有复杂多变的化学形态，要准确测定其含量，必须要有灵敏可靠的检测方法。

Since 1980s, ICP-MS has been used overseas for the determination of uranium, thorium, neptunium, and plutonium in environmental samples. ICP-MS is one of the most suitable analysis techniques for the measurement of the long-lived radionuclides.

自八十年代以来，国外对ICP-MS测量环境样品中的铀、钍、镎和钚的研究表明，ICP-MS在测量长寿命放射性核素方面是最有发展前景的测量技术之一。

By analyzing radionuclides such as uranium, neptunium and plutonium in environmental samples, which were collected in the immediate environment of a nuclear process or nuclear site, researchers can detect evidence of the corresponding nuclear activities.

随着核能的开发应用，为评价放射性废物对环境的影响及确定放射性废物安全处置方案，长寿命放射性核素的环境行为越来越受到各国环境科学工作者的关注。

Objective To evaluate the significance of bone scan in the clinical staging and evaluation of therapeutic effect of neuroblastoma.

目的探讨核素骨扫描在儿童神经母细胞瘤临床分期和疗效评价中的应用价值。

When the distribution of important fission products is calculated, emphasis is placed on the noble gas radionuclides and upon radioisotope of iodine because of their great contribution to accident dose.

在对重要裂变产物分布的仿真计算中，重点放在了惰性气体核素和碘的放射性同位素上，因为它们是事故中放射性剂量的重要来源。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。