放射性活度

~（147）Pm溶液的放射性活度采用效率示踪和液体闪烁两种方法测量。

The radioactivity of 147Pm solution is measured with both liquid scintillation counting and efficiency tracer method .

ISOL靶-源中铀靶的放射性活度研究

Investigation of Radioactivity of Uranium Target in Target - Source of ISOL

强度平衡法测量~（59）Fe放射性活度

Measurement of Radioactive Activity for ~ ( 59 ) Fe Using Intensity Balance Method

游泳池反应堆回路水中~（16）N和~（19）O放射性活度确定

Determination of ~ ( 16 ) N and ~ ( 19 ) O Activities in Loop Water of Swimming Pool Reactor

双探头SPECT对向平面显像放射性活度定量的模型研究

Activity quantification of phantom using dual-head SPECT with two-view planar image

~（204）T1核素溶液放射性活度国际比对测量

International Comparison of the Activity Measurement of Solution of 204 T1

用抗人IgG二抗分离抗体抗原复合物，测定放射性活度。

Antigen-antibody complex was precipitated with anti-human IgG ( immune precipitation method ) and radio-activity determined .

描述了用于放射性活度测量的4πγNaI（Tl）计数法的测量原理。

The paper describes the 4 πγ counting method in radioactivity measurement .

~（99）Tc~m-MIBI与细胞共同孵育2h后收集细胞，测定放射性活度和P-gp表达水平。

Cells were harvested after 2 h incubation with ~ ( 99 ) mTc-MIBI .

内充气正比计数管系统绝对测量~（87）Kr放射性活度浓度

Absolute Measurement of Activity Concentration of ~ ( 87 ) Kr by Using Internal Gas Proportional Counting

18F-FDG组显示随其放射性活度增加，肺癌细胞对其摄取比率先升高后降低。

As the activity of 18F-FDG increased , the uptake rates first rise then decreased .

用4πβγ符合装置测量放射性活度，以及用HPGe和小平面Ge探测器测量γ射线数。

Activity is measured using 4 πβ γ coincidence apparatus and photon counting is performed applying HPGe and small area planar Ge detectors .

方法15例宫颈癌患者存局麻下实施经超声引导阴道穿刺125I粒子植入治疗，每颗粒子放射性活度为0.50-0.80mCi，平均植入15颗。

Methods Fifteen patients with carcinoma of uterine cervix were treated with 125I particulate implantation guided by ultrasonography .

PKC活性通过测定转移到CK2底物上的[γ32P]ATP的32P的放射性活度来检测。

The PKC activity was assayed by detecting incorporation of 32P of [ γ - 32P ] ATP into the substrate .

用4台HPGe探测器组成的γγ符合测量装置，对标准源133Ba和134Cs的放射性活度进行了测量。

Activities of the standard sources 133 Ba and 134 Cs are determined using four HPGe detectors by γ γ coincidence measurements .

肝脏中6h5min的放射性活度为30min的27.2%，下降了72.8%。

The radioactivity in 6 h 5 min was 27.2 % of the 30 min in normal mice liver and decreased 76.8 % .

此外，本工作还对影响比对结果的其它因素也做了讨论，它明确指出，那些受外源性特征X射线干扰的特征γ峰不应该被用来测定样品的γ放射性活度。

And other factors that influence this time comparison result are discussed too in the work . In the paper it is pointed out definitely that the characteristic peaks that are disturbed by characteristic X-rays from out-sources ought to be not adopted to determine activities of the samples .

血样放射性活度数据应用DAS软件处理，结合αvβ3受体在正常体内实际表达情况进行室模型判断，并得出相应的示踪动力学参数。

The data were processed by computer with DAS program , the compartment model was judged in combination of the actual expression of α _ v β _ 3 receptor in normal body and the relevant tracer kinetics parameters were obtained .

植株体内放射性活度随着时间延长而降低，从标记后1d到成熟期，常规水稻和旱作水稻体内放射性活度总量分别下降31.6%和31.3%。

With time extending the radioactivity in rice plant declined . From the next day of labeling to harvest the total amount of radioactivity decreased by 31.56 % in normal paddy rice and 31.34 % in upland rice .

介绍了如何提高3H、14C样品的探测效率，进行了计量技术的研究。使用4πβ（LS）活度国家基准刻度3H、14C溶液的放射性活度。

The paper introduces a practical method to improve the detection efficiency of 3H , 14C sample , used for metrology technique research , using 4 πβ( LS ) radioactivity of graduation solution of 3H , 14C of National Primary Standard .

结果①45Ca标记的钙制剂具有较高的放射性活度、较稳定的组织标准曲线和回收率。

Results ① Radioisotope 45 Ca labeling calcium chemical compound has high radio intensity , more steady standard curve and recover rate .

反应与纯化大约需要2.5h，SephadexG-75用于从反应产物中分离标记单克隆抗体（McAb），产率不低于初始~（211）At放射性活度的30%。

The reaction and purification required about 2.5 h. Sephadex G-75 column was used to separate the labelled CEA-McAb from reactive products and the labelling yield was at least 30 % of the initial activity of ~ ( 211 ) At .

应用32P研究了金钗石斛对磷素的吸收和运转。结果表明，金钗石斛植株各部位均可吸收磷素，成长叶的总放射性活度最高。

The characteristics of absorption and translocation of phosphorus in dendrobe were revealed by using 32 P.The results indicated that each part of dendrobe could absorb phosphorus , and the highest plant total radioactivity was obtained in the treatment of labelled mature leaf .

对中国原子能科学研究院游泳池反应堆回路水中16N和19O的放射性活度进行测定。

Measurements of activities for ~ ( 16 ) N and ~ ( 19 ) O nuclei in the loop water of swimming pool reactor at China Institute of Atomic Energy were carried out .

在盛花期，花果中磷素放射性活度呈上升趋势，宁RS-1和宁油7号叶中的磷素放射性活度都先上升后下降，但前者上升的幅度较大，而且后期下降缓慢；

On the one hand , the radioactivity in leaves of varieties " Ning RS-1 " and " Ningyou NO.7 " rose at first and then fell off , but the increase of radioactivity in variety " Ning RS-1 " was more significant and the radioactivity fell off more slowly .

对取自浙江近岸浅海海域的5个沉积岩心进行了210Pb放射性活度、粒度和元素地球化学含量测试，探讨了沉积速率的横向变化、化学元素的垂向分布与变化特征。

Based on the analysis of ~ ( 210 ) Pb radioactivity , grain-size and element geochemical contents of 5 cores collected from shallow sea of Zhejiang offshore , we discussed the variation of deposition rates , and the vertical distribution and change characters of chemical elements .

高放废液总β放射性活度测量

Measurement of gross beta radioactivity in high - level liquid waste

γ辐射核素放射性活度测量标准装置

Standard apparatus for measuring activity of the γ - ray radionuclides

对IAEA188号报告中一标准算例，用这4种方法进行饱和放射性活度As的计算，并对结果进行比较。

These four methods were compared using a standard IAEA example .

GB/T10253-1988液态排出流β、γ放射性活度连续监测设备

Equipment for continuously monitoring for beta and gamma activity in liquid effluents