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Accurate and uniform temperature in a refrigerator plays a key role in ensuring the life of vaccines, reagents and other biologicals. Research has shown that minor variances in temperature such as those in a household refrigerator can compromise the effectiveness of your biologicals, risking up to thousands of dollars in valuable contents.
A 3 He/ 4 He dilution refrigerator is a cryogenic device that provides continuous cooling to temperatures as low as 2 mK, with no moving parts in the low-temperature region. [ 1 ] [ 2 ] The cooling power is provided by the heat of mixing of the helium-3 and helium-4 isotopes.
Expert Review of Medical Devices is a monthly peer-reviewed medical journal covering research on the clinical use of devices. It was established in 2004 and is published by Informa . According to the Journal Citation Reports , the journal has a 2013 impact factor of 1.784.
1920 – Edmund Copeland and Harry Edwards use iso-butane in small refrigerators. 1922 – Baltzar von Platen and Carl Munters invent the 3 fluids absorption chiller, exclusively driven by heat. 1924 – Fernand Holweck – the Holweck pump; 1926 – Albert Einstein and Leó Szilárd invent the Einstein refrigerator.
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Proposed 25% U.S. tariffs on Canada and Mexico could lead to a sharp increase in vehicle prices, auto industry executives and analysts say.
A solar-powered refrigerator is a refrigerator which runs on energy directly provided by sun, and may include photovoltaic or solar thermal energy. Solar-powered refrigerators are able to keep perishable goods such as meat and dairy cool in hot climates and are used to keep much-needed vaccines at their appropriate temperature to avoid spoilage.
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