Electronics & Semiconductors
Memory, or the ability to store information in a readily accessible way, is an essential operation in computers and human brains. A key difference is that while brain information processing involves performing computations ...
Mar 19, 2024
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43
Energy & Green Tech
Bipolar membranes (BPMs) are a class of ion-exchange membranes typically comprising a cation- and an anion-exchange layer. While these membranes have recently been integrated in various electrochemical devices for a wide ...
Energy & Green Tech
Layered lithium cobalt oxide, a key component of lithium-ion batteries, has been synthesized at temperatures as low as 300°C and durations as short as 30 minutes.
Oct 24, 2023
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74
Energy & Green Tech
Scientists from NTU Singapore have developed a flexible battery as thin as a human cornea, which stores electricity when it is immersed in saline solution, and which could one day power smart contact lenses.
Aug 24, 2023
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154
Energy & Green Tech
Emil Thorin from Umeå University has developed a new optical method for rapid measurements of gaseous inorganic species in biomass combustion and gasification. The new technology will contribute to more efficient conversion ...
May 17, 2023
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11
Engineering
Automated sprinklers, lighting, and security systems have been commonplace in homes and offices for several decades. In recent years, however, they have become increasingly efficient at anticipating user needs and optimizing ...
Mar 29, 2023
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83
Engineering
Scientists at the U.S. Department of Energy's Oak Ridge National Laboratory have begun operating a unique system designed to enable a variety of testing to characterize the performance of an advanced heat transfer fluid for ...
Feb 14, 2023
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8
Energy & Green Tech
Researchers from Tokyo Metropolitan University have developed a new carbon capture system that removes carbon dioxide directly from the atmosphere with unprecedented performance. Isophorone diamine (IPDA) in a "liquid-solid ...
May 30, 2022
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389
Energy & Green Tech
Scientists at Nanyang Technological University, Singapore (NTU Singapore) have developed a pollen-based "paper" that, after being printed on, can be "erased" and reused multiple times without any damage to the paper.
Apr 5, 2022
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469
Energy & Green Tech
Sodium, the main constituent in salt, and potassium alteration are associated with some of the world's most valuable ore deposits.
Jul 23, 2021
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440
Potassium (pronounced /pɵˈtæsiəm/) is the chemical element with the symbol K (Latin: kalium, from Arabic: القَلْيَه al-qalyah “plant ashes”, cf. Alkali from the same root), atomic number 19, and atomic mass 39.0983. Potassium was first isolated from potash. Elemental potassium is a soft silvery-white metallic alkali metal that oxidizes rapidly in air and is very reactive with water, generating sufficient heat to ignite the evolved hydrogen.
Potassium in nature occurs only as ionic salt. As such, it is found dissolved in seawater, and as part of many minerals. Potassium ion is necessary for the function of all living cells, and is thus present in all plant and animal tissues. It is found in especially high concentrations in plant cells, and in a mixed diet, it is most highly concentrated in fruits.
In many respects, potassium and sodium are chemically similar, although they have very different functions in organisms in general, and in animal cells in particular.
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