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Related Concept Videos

Gain01:15

Gain

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Gain and phase shift are properties of linear circuits that describe the effect a circuit has on a sinusoidal input voltage or current. The circuit's behavior that contains reactive elements will depend on the frequency of the input sinusoid. As a result, it is observed that the gain and phase shift will all be frequency functions.
Gain:
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The shape of a small drop of liquid can be considered spherical, neglecting the effect of gravity. This drop can further be considered as two equal hemispherical drops put together due to surface tension. The forces acting on the spherical drop are due to the pressure of the liquid inside the drop, the pressure due to air outside the drop, and the force due to the surface tension acting on the two hemispherical drops.
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While taking the arithmetic, geometric, or harmonic mean of a sample data set, equal importance is assigned to all the data points. However, all the values may not always be equally important in some data sets. An intrinsic bias might make it more important to give more weightage to specific values over others.
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Atomic Weight01:25

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Protons and neutrons have approximately the same mass, about 1.67 × 10-24 grams. Scientists arbitrarily define this amount of mass as one atomic mass unit (amu) or one Dalton. Electrons are much smaller in mass than protons, weighing only 9.11 × 10-28 grams, or about 1/1800 of an atomic mass unit. As a result, they do not contribute much to an element's overall atomic mass. This means that, when considering atomic mass, it is customary to ignore the mass of any electrons and...
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Mass and Weight01:19

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Mass and weight are often used interchangeably in everyday conversation. For example,  medical records often show our weight in kilograms, but never in the correct units of newtons. In physics, however, there is an important distinction. Weight is the pull of the Earth on an object. It depends on the distance from the center of the Earth. Weight dramatically varies if we leave the Earth's surface, unlike mass, which does not vary with location. On the Moon, for example, the...
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Author Spotlight: Alleviating Nausea and Vomiting in Pregnancy with Safe and Effective Auricular Acupuncture
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Excessive Gestational Weight Gain.

Megan McDowell, Mary Ashley Cain, Jessica Brumley

    Journal of Midwifery & Women'S Health
    |December 15, 2018
    PubMed
    Summary
    This summary is machine-generated.

    Excessive gestational weight gain (GWG) increases risks for mothers and newborns. Individualized counseling and interventions like diet/exercise advice can help manage pregnancy weight gain.

    Keywords:
    gestational weight gainmaternal health complicationsnutritionobesitypatient educationprenatal care

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    Area of Science:

    • Obstetrics and Gynecology
    • Maternal-Fetal Medicine
    • Public Health

    Background:

    • Excessive gestational weight gain (GWG) is linked to significant maternal and neonatal complications.
    • Higher pre-pregnancy Body Mass Index (BMI) increases the risk of excessive GWG and postpartum weight retention.
    • Maternal excessive GWG is associated with an elevated risk of childhood obesity.

    Purpose of the Study:

    • To review current research on the maternal and neonatal risks associated with excessive GWG.
    • To explore effective interventions for managing and reducing excessive GWG during pregnancy.

    Main Methods:

    • Literature review of current research on gestational weight gain.
    • Analysis of studies examining risks and interventions related to excessive GWG.

    Main Results:

    • Excessive GWG is associated with hypertensive disorders of pregnancy, fetal macrosomia, and increased cesarean birth rates.
    • Individualized counseling based on pre-pregnancy BMI and tracking GWG are recommended strategies.
    • Interventions including specific diet and exercise counseling, technology, and motivational interviewing show promise in reducing excessive GWG.

    Conclusions:

    • Effective management of GWG is crucial for mitigating maternal and neonatal health risks.
    • Personalized prenatal care approaches incorporating evidence-based interventions are vital for optimizing pregnancy outcomes.
    • Addressing excessive GWG can contribute to reducing the incidence of childhood obesity.