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Related Concept Videos

Weir01:24

Weir

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A weir is a hydraulic structure designed to partially obstruct an open channel, enabling precise control and measurement of water flow. By forcing water to flow over or through it, a weir allows for accurate determination of discharge rates, making it an essential tool in water resource management. These structures are extensively used in regulating river flows, irrigation systems, and flood control channels.Types of Weirs and Their FeaturesWeirs are categorized primarily into sharp-crested and...
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Weir: Problem Solving01:26

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Water flow in open channels is often measured using hydraulic structures such as weirs, which allow precise calculation of discharge. In a rectangular channel, flow rates are measured using three types of weirs: rectangular sharp-crested, triangular sharp-crested, and broad-crested. The weir head is set at a fixed height above the channel bottom, simplifying calculations and enabling the relationship between depth and flow rate to be analyzed.For the rectangular sharp-crested weir, the flow...
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Atoms and molecules interact with each other through intermolecular forces. These electrostatic forces arise from attractive or repulsive interactions between particles with permanent, partial, or temporary charges. The intermolecular forces between neutral atoms and molecules are ion–dipole, dipole–dipole, and dispersion forces, collectively known as van der Waals forces.
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Wheatstone Bridge01:29

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An ohmmeter is a resistance-measuring device. It works by applying a voltage to a resistor of unknown resistance and measuring the current across the resistor. The resistance value is deduced using Ohm's law. Usually, the standard configuration of an ohmmeter comprises a voltmeter or an ammeter. However, such configurations are limited in accuracy because the meters alter the voltage applied to the resistor and the current that flows through it.
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Tandem Mass Spectrometry01:21

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Tandem mass spectrometry is a technique that uses multiple mass analyzers in series to obtain a higher selectivity and reduce chemical noise during analyte detection. Instruments with multiple analyzers separated by an interaction cell enable secondary fragmentation and selected study of the fragment ions.Secondary fragmentations occur in the interaction cell and can be induced by various factors. Fragmentation induced by collision with inert gases, such as N2, Ar, He, etc., is called...
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Reply to T Weishaar

Ramon A Durazo-Arvizu1, Pauline Camacho1, Pascal Bovet1

  • 1From the Departments of Public Health Sciences (RAD-A, rdurazo@luc.edu; BT; LRD; RSC; and AL) and Endocrinology (PC), Stritch School of Medicine, Loyola University Chicago, Maywood, IL; the Institute of Social and Preventive Medicine, Lausanne University Hospital, Lausanne, Switzerland (PB); the Tropical Medicine Research Institute, University of the West Indies, Mona, Kingston, Jamaica (TF); the Research Unit for Exercise Science and Sports Medicine, University of Cape Town, Cape Town, South Africa (EVL); Kwame Nkrumah University of Science and Technology, Kumasi, Ghana (JP-R); the Departments of Laboratory Medicine and Medicine, University of Washington, Seattle, WA (ANH); and Winthrop University Hospital, Mineola, NY (JA).

The American Journal of Clinical Nutrition
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No abstract available in PubMed .

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