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  • Interactive size control of catalyst nanoparticles

    5, 10, or maybe 15? How many nanometers should nanoparticles of a catalyst be to optimize the course of the reaction? Researchers usually look for the answer by laborious, repetitive tests. At the Institute of Physical Chemistry of the Polish Academy of Sciences in Warsaw, a qualitatively new techni more

  • Self-sustaining loop of chemical reactions could revolutionize drug production

    Experts from the University of Nottingham have created a self-sustaining circuit of reactions which is a greener and more efficient method of chemical production. Drs Francesca Paradisi and Martina Contente of the University of Nottingham produce chemicals more efficiently through a looped set of re more

  • A faster and more efficient way to process information

    University of Waterloo chemists have found a much faster and more efficient way to store and process information by expanding the limitations of how the flow of electricity can be used and managed. In a recently released study, the chemists discovered that light can induce magnetization in certain s more

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Choked flow

Choked flow Choked flow of a fluid is a fluid dynamic condition caused by the Venturi effect . When a flowing fluid at a certain pressure and temperature flows through a restriction (such as the hole in an orifice plate or a valve in a pipe ... more


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