PRODUCTION AND USE OF RAT SPERMATOGONIAL STEM CELL LINES
    102.
    发明申请
    PRODUCTION AND USE OF RAT SPERMATOGONIAL STEM CELL LINES 审中-公开
    大肠杆菌干细胞系的生产和使用

    公开(公告)号:WO2010065550A2

    公开(公告)日:2010-06-10

    申请号:PCT/US2009/066275

    申请日:2009-12-01

    Inventor: HAMRA, F., Kent

    Abstract: A spermatogonial stem cell line that is derived from testes of rats characterized by a desirable genetic background can serve as a source for cells to transplant into male-sterile recipient animals that are immuno-compatible with the spermatogonial line. Rat cells thus transplanted readily develop into fertilization-competent, haploid male gametes, with little or no endogenous sperm competition generated by the testes of the male-sterile recipient. This approach, constituting the first vector system for the use of rat spermatogonial lines from in vitro culture in generating mutant rats on a desired genetic background, effects maximal germline transmission of donor haplotypes from the transplanted spermatogonial cells.

    Abstract translation: 来源于具有所需遗传背景的大鼠睾丸的精原干细胞系可以作为细胞移植到与精原细胞系免疫相容的雄性不育受体动物的来源。 因此移植的大鼠细胞很容易发育成受精能力的单倍体雄性配子,雄性不育接受者的睾丸产生的内源性精子竞争很少或没有。 构建用于在所需遗传背景下产生突变大鼠的来自体外培养的大鼠精原细胞系的第一载体系统影响来自移植的精原细胞的供体单倍型的最大种系传播。

    DOWNHOLE STRAIN SENSOR
    110.
    发明申请

    公开(公告)号:WO2019232521A1

    公开(公告)日:2019-12-05

    申请号:PCT/US2019/035178

    申请日:2019-06-03

    Abstract: A device for measuring strain on the exterior of a pipe includes a body comprising a top portion and a bottom portion; one or more elastically deformable members coupled between the top portion and the bottom portion, wherein each of the one or more elastically deformable members have an outer contact surface and an inner non-contact surface. One or more sensors are disposed on the inner non-contact surface of one or more of the elastically deformable members. The sensors, during use, provide data that can be used to determine changes in strain on the exterior of the pipe. In another embodiment, one or more sensors are embedded in, or attached to, a casing disposed in a wellbore. In an embodiment, a method includes pressurizing or depressurizing the wellbore with a fluid and measuring the strain induced in the casing (or in an open wellbore) in response to this change in wellbore pressure.

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