核素

The effect of the decrease in bremsstrahlung energy on the yields of these main products is examined.

其中~(11)C，~(18)F，~(45)Ti，~(47)Sc，~(57)Ni，~(57)Co，~(67)Cu，~(99)Mo，~(105)Ag，~(115)Cd，~(114m)In，~(111)Sn和~(111)In为主要产物，其他核素作为同时产生的杂质。

Using the Dynamic Cardiogram and Nucleon Myocardial Raster Display (201TL ) to compare the situation of MI.

采用动态心电图和核素心肌显像两种检测方法比较心肌缺血的情况。

Methods: Nineteen cases of clinicopathologic defined thyroid nodule cauterization were retrospectively recruited. We analyzed their clinical materials and radionuclide imaging features.

回顾性分析19例经手术病理证实为甲状腺结节癌变患者的临床资料和核素显像表现。

9The sieve that scanning of 9mTc-MDP nuclide bone can check in installment as lung cancer checks the method; progress as lung cancer course of diseases, tumor labels the level of content CEA, CA125, NSE and CYFRA21-1 rises gradually. Other people of number of tumour of combination of 99mTc-MDP bone scanning has fundamental value in be not cellule lung cancer to be diagnosed in installment.

99mTc-MDP核素骨扫描可作为肺癌分期检查的筛查手段；随着肺癌病程的进展，肿瘤标记物CEA、CA125、NSE和CYFRA21-1的水平逐渐上升。99mTc-MDP骨扫描联合肿瘤标记物在非小细胞肺癌分期诊断中具有重要的价值。

In diagnosing centrum metastases,MRI is more sensitive and correct than WBS.

在显示骨转移瘤方面，MRI较核素骨扫描具有高的敏感性、特异性。

The nuclear reactions in the initial study, the discovery of the neutron in 1932 and in 1934 the synthesis of artificial radionuclides is a representative The results of .40 before and after the age of nuclear physics has entered a phase of great development .1939, the Hahn and Strassman found that the phenomenon of nuclear fission in 1942, Fermi established the first fission chain reactor, which is human with nuclear energy start.

在初期的核反应研究中，1932年中子的发现和1934年人工放射性核素的合成是具有代表性的成果。40年代前后，核物理进入一个大发展阶段。1939年，哈恩和斯特拉斯曼发现核裂变现象，1942年，费米建立了第一个链式裂变反应堆，这是人类掌握核能源的开端。

The results suggest that natural TL of the three samples with known depth positions had depth distribution such as meteoritic cosmogenic nuclides, which was smaller with increasing distance from the current surface, indicating the conditions of cosmic ray exposure of the Jilin chondrite.

对3个已知取样深度和3个未知取样部位的吉林陨石样品的热释光研究表明，其自然热释光值具有宇宙成因核素含量相似的性质即深度分布效应，随着样品距离表面位置的增大而降低，这表征了母体暴露期间宇宙射线的分布状况。

A kind of in-situ measurement method is introduced in this paper, by which the radioactivity in the clayey sand of ground surface contaminated by radioactive particulates can be investigated.

本文简要介绍一种对放射性微粒污染的地表砂土中放射性核素活度的就地测量方法。

Radiolabeled ASODN was designed complementation to target mRNA for imaging changes in the level of gene expression in vivo.

用放射性核素标记ASODN，在体外显像可以诊断体内mRNA水平变化，肿瘤的存在和大小。

Yuen joined the simulation of the radionuclide more energy to raise the low end of the Compton scattering count.

体源模拟加入了更多核素的能量，提高了低能端的康普顿散射计数。

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％。