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  2. Late termination of pregnancy - Wikipedia

    en.wikipedia.org/wiki/Late_termination_of_pregnancy

    Definition [ edit] A late termination of pregnancy often refers to an induced ending of pregnancy after the 20th week of gestation, i.e. after a fetal age (time since conception) of about 18 weeks. The exact point when an abortion is considered late-term, however, is not clearly defined.

  3. GPS week number rollover - Wikipedia

    en.wikipedia.org/wiki/GPS_week_number_rollover

    The GPS week number rollover is a phenomenon that happens every 1,024 weeks, which is about 19.6 years. The Global Positioning System (GPS) broadcasts a date, including a week number counter that is stored in only ten binary digits, whose range is therefore 0–1,023. After 1,023, an integer overflow causes the internal value to roll over ...

  4. Gestational sac - Wikipedia

    en.wikipedia.org/wiki/Gestational_sac

    Gestational sac. Contents in the cavity of the uterus seen at approximately 5 weeks of gestational age by obstetric ultrasonography. Artificially colored, showing gestational sac, yolk sac and embryo (measuring 3 mm as the distance between the + signs). The gestational sac is the large cavity of fluid surrounding the embryo.

  5. National Library Week - Wikipedia

    en.wikipedia.org/wiki/National_Library_Week

    First sponsored in 1958, National Library Week (NLW) as observed in the United States is sponsored by the American Library Association (ALA) and libraries across the USA each April, typically the second full week. [1] It promotes library use and support. In 1954, a nonprofit National Book Committee was established between the ALA and the ...

  6. Zero Waste Week - Wikipedia

    en.wikipedia.org/wiki/Zero_Waste_Week

    Zero Waste Week is an environmental campaign to reduce landfill waste, and takes place annually during the first full week in September. [1] [2] [3] It is a non-commercial grass-roots campaign to demonstrate means and methods to reduce waste, foster community support [4] and bring awareness to the increasing problem of environmental waste and ...

  7. Percutaneous umbilical cord blood sampling - Wikipedia

    en.wikipedia.org/wiki/Percutaneous_umbilical...

    Percutaneous umbilical cord blood sampling ( PUBS ), also called cordocentesis, fetal blood sampling, or umbilical vein sampling is a diagnostic genetic test that examines blood from the fetal umbilical cord to detect fetal abnormalities. [1] Fetal and maternal blood supply are typically connected in utero with one vein and two arteries to the ...

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