Tritium radioactivity measuring system
    2.
    发明授权
    Tritium radioactivity measuring system 失效
    氚放射性测量系统

    公开(公告)号:US4755471A

    公开(公告)日:1988-07-05

    申请号:US884155

    申请日:1986-09-05

    CPC分类号: G01N31/00

    摘要: A continuous tritium radioactivity measuring system is disclosed, in which a sample gas containing tritium is mixed with hydrogen gas, water vapor and lower hydrocarbon gases with the assistance of a catalyst for causing an isotope exchange reaction between the tritium contained in the sample gas and hydrogen. The resultant tritium gas and lower hydrocarbons containing tritium are removed from the remaining hydrogen water, and radioactivity detection is performed thereon.

    摘要翻译: 公开了一种连续的氚放射性测量系统,其中含有氚的样品气体与氢气,水蒸气和低级烃气体在催化剂的帮助下与样品气体中所含的氚和氢气之间的同位素交换反应混合 。 从剩余的氢水中除去得到的氚气体和含有氚的低级烃,并进行放射性检测。

    Method of compensating for quenching effect of substance contained in a
sample gas the radioactivity of which is to be measured by a
radioactivity detector and apparatus for performing the same
    4.
    发明授权
    Method of compensating for quenching effect of substance contained in a sample gas the radioactivity of which is to be measured by a radioactivity detector and apparatus for performing the same 失效
    补偿样品气体中所含物质的淬灭效应的方法,其放射性由放射性检测器和用于进行该放射性检测的装置

    公开(公告)号:US4027163A

    公开(公告)日:1977-05-31

    申请号:US541250

    申请日:1975-01-15

    CPC分类号: G01T7/02

    摘要: A first and a second radioactivity detectors are used in series or in parallel which have substantially the same constructive features and the second radioactivity detector includes a fixed standard radioactive source therein. Sample gases each having a common radioactivity and having a different quenching effect are passed through the two radioactivity detectors sequentially to measure the effective radioactivities thereof to thereby obtain counting efficiencies of the two radioactivity detectors. A correction curve is drawn by putting the counting efficiency of the first radioactive detector along one axis of an orthogonal coordinates and the counting efficiency of the second radioactivity detector along the other axis of the coordinates. An unknown sample is treated in the same manner as the above to obtain the counting efficiency of the second detector for the unknown sample and a corresponding counting efficiency of the first radioactivity detector is obtained from the correction curve by the last counting efficiency of the second radioactivity detector. The quenching effect of the unknown sample is compensated for by using the corresponding counting efficiency of the first radioactivity detector.

    摘要翻译: 串联或并联使用第一和第二放射性检测器,其具有基本上相同的结构特征,并且第二放射性检测器在其中包括固定的标准放射源。 各具有共同放射性并具有不同淬灭效果的样品气体依次通过两个放射性检测器以测量其有效放射活性,从而获得两个放射性检测器的计数效率。 通过将第一放射性检测器的计数效率沿着正交坐标的一个轴和第二放射性检测器的坐标的另一个轴的计数效率来绘制校正曲线。 以与上述相同的方式处理未知样品以获得未知样品的第二检测器的计数效率,并且通过第二放射性的最后计数效率从校正曲线获得第一放射性检测器的相应计数效率 探测器。 通过使用第一放射性检测器的相应计数效率来补偿未知样品的淬灭效应。

    Method and apparatus for judging agglutination pattern
    5.
    发明授权
    Method and apparatus for judging agglutination pattern 失效
    用于判断凝集模式的方法和装置

    公开(公告)号:US4794450A

    公开(公告)日:1988-12-27

    申请号:US90477

    申请日:1987-08-28

    摘要: An apparatus for judging an agglutination has a transparent plate stand 5 for supporting a microplate 7 and perforated with positioning openings 9 for centering of each well 8 of the microplate. A light source and TV camera 12 are disposed above the microplate, an image memory 13 stores the output of the camera, a processor 15 differentiates the stored image to determine its profile, and the picture elements of the differentiated image having intensity levels larger than zero are counted. A calculator 17 produces coefficients of variation, which are plotted against the image profile and compared with a reference value to remove contrast irregularities.

    摘要翻译: 用于判断凝集的装置具有用于支撑微板7的透明板支架5,并且穿过定位开口9,用于定位微孔板的每个孔8。 光源和电视摄像机12设置在微板上方,图像存储器13存储照相机的输出,处理器15区分所存储的图像以确定其轮廓,并且具有大于零的强度水平的差分图像的像素 算了 计算器17产生变化系数,其相对于图像轮廓绘制并与参考值进行比较以去除对比度不规则。

    Indirect agglutination immunoassay and apparatus therefor
    6.
    发明授权
    Indirect agglutination immunoassay and apparatus therefor 失效
    间接凝集免疫测定及其设备

    公开(公告)号:US06258607B1

    公开(公告)日:2001-07-10

    申请号:US08082373

    申请日:1993-06-28

    IPC分类号: G01N33553

    摘要: An indirect agglutination immunoassay includes the steps of providing, in a container, an immunoassay system comprising a test sample containing a desired analyte, and a reagent composed of magnetic particles or magnetic-material containing particles containing iron therein, wherein the magnetic particles or magnetic-material containing particles have been sensitized to allow specific binding to the desired analyte, and have a particle size in the range of 1 to 5 &mgr;m, with the content of the iron being in the range of 8 to 20 wt. %, precipitating the magnetic particles or magnetic-material containing particles by the application of magnetic force, allowing the container to stand at an inclination, and detecting the presence or absence of an immune reaction from the absence or presence of slippage observed of the precipitated magnetic particles or magnetic-material containing particles on the bottom of the container. An apparatus for conducting this indirect agglutination immunoassay is composed of the above container, a magnetic sedimentation device for magnetically precipitating the components containing the magnetic particles at the bottom of the container, and an inclination device for allowing the container to stand at an inclination after removal of the magnetic sedimentation device.

    摘要翻译: 间接凝集免疫测定法包括以下步骤:在容器中提供包含含有所需分析物的测试样品的免疫测定系统和由含有铁的粒子的磁性粒子或磁性材料构成的试剂,其中,磁性粒子或磁性粒子, 含有颗粒的材料已经被致敏以允许与期望的分析物的特异性结合,并且具有1至5μm的范围内的粒度,其中铁的含量在8至20重量%的范围内。 %,通过施加磁力使磁性颗粒或含有磁性材料的颗粒沉淀,允许容器倾斜放置,并且检测是否存在免受沉淀的磁体的滑动的存在或不存在 在容器底部含有颗粒的颗粒或磁性材料。 用于进行这种间接凝集免疫测定的装置由上述容器构成,用于磁性沉淀容器底部包含磁性颗粒的组分的磁性沉降装置和用于允许容器在移除后以倾斜姿势静置的倾斜装置 的磁性沉降装置。