Methods and compositions for detecting telomerase activity
    5.
    发明授权
    Methods and compositions for detecting telomerase activity 有权
    检测端粒酶活性的方法和组合物

    公开(公告)号:US07390621B2

    公开(公告)日:2008-06-24

    申请号:US10534978

    申请日:2003-11-12

    IPC分类号: C12Q1/68 C12P19/34

    摘要: A method for determining telomerase activity using primer extension followed with real time PCR quantification is disclosed. The method of the present invention provides a rapid, sensitive and accurate measurement for telomerase activity in a biological sample. In one embodiment, the method includes the steps of: adding the biological sample to a reaction tube containing a first reaction mixture having a first primer and nucleoside triphosphates, a second reaction mixture having a second primer and a DNA polymerase, and a wax layer that separates the first reaction mixture from the second reaction mixture; incubating the biological sample with the first reaction mixture; admixing the extension product with the second reaction mixture; amplifying and quantifying the extension product using real-time PCR and a control template. In another embodiment, the detection method includes an in situ primer extension step that allows the production of the extension product within an intact cell. In this embodiment, the extension product can be preserved under appropriate conditions for an extended time before the completion of the quantification step.

    摘要翻译: 公开了使用引物延伸测定端粒酶活性的方法,随后进行实时PCR定量。 本发明的方法提供对生物样品中端粒酶活性的快速,灵敏和准确的测量。 在一个实施方案中,该方法包括以下步骤:将生物样品加入到含有具有第一引物和核苷三磷酸的第一反应混合物的反应管中,具有第二引物和DNA聚合酶的第二反应混合物和蜡层, 将第一反应混合物与第二反应混合物分离; 用第一反应混合物孵育生物样品; 将延伸产物与第二反应混合物混合; 使用实时PCR扩增和定量扩增产物和对照模板。 在另一个实施方案中,检测方法包括原位引物延伸步骤,其允许在完整细胞内产生延伸产物。 在本实施例中,扩展产品可以在适当的条件下在量化步骤完成之前延长一段时间。

    High-powered optical module safety systems and methods
    10.
    发明授权
    High-powered optical module safety systems and methods 有权
    大功率光模块安全系统及方法

    公开(公告)号:US08817245B2

    公开(公告)日:2014-08-26

    申请号:US13593212

    申请日:2012-08-23

    IPC分类号: G01N21/00 G01M11/00

    摘要: A method, optical module, and optical amplifier are configured to detect fiber discontinuities at or near a port from which high powered optical signals are input into a fiber span. These fiber discontinuities can include fiber pinches, and are detected by monitoring for slight changes in a backscatter signal. Detection is quick and efficient based on the backscatter signal being attenuated by the fiber discontinuities twice, namely once as the high powered optical signals and again as the associated backscatter signal of the high powered optical signals returning to the port. Various remedial actions can be taken upon detecting fiber pinches at or near the port.

    摘要翻译: 一种方法,光学模块和光学放大器被配置为检测光纤不连续性,其中高功率光信号从该端口输入到光纤跨度。 这些光纤不连续性可以包括光纤夹紧,并通过监视反向散射信号的轻微变化来检测。 基于后向散射信号被光纤不连续性衰减两次,即一次作为高功率光信号,再次作为返回到端口的大功率光信号的相关后向散射信号,检测是快速和有效的。 在端口处或附近检测光纤夹点时可以采取各种补救措施。