In the deepest parts of the ocean, below 4,000 meters, the combination of high pressure and low temperature creates conditions that dissolve calcium carbonate, the material marine animals use to make their shells.
Earth Sciences
Jul 9, 2024
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39
Researchers have synthesized tannic acid-coated magnetic beads capable of extracting membrane vesicles called "exosomes" from biological fluids with 60% efficiency. This novel method will make it easier and faster to isolate ...
Biochemistry
Jul 1, 2024
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39
When looking at calcite under a microscope, a scientist would immediately recognize the crystalline form of calcium carbonate by its rhombohedral appearance. That is, calcite is shaped like a distorted cube. One of Earth's ...
Materials Science
Jun 25, 2024
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Researchers at the University of Hannover have uncovered new insights into the mode of action of calcium in the reduction of macrocracking in sweet cherry fruit. The findings shed light on the mechanisms underlying this phenomenon, ...
Plants & Animals
Jun 20, 2024
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Calcium oxide is a cheap, chalky chemical compound commonly used in the manufacturing of cement, plaster, paper, and steel. But the material may soon have a more high-tech application.
Condensed Matter
Jun 6, 2024
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109
A collaborative team of researchers has made a cracking discovery with the potential to make a significant impact in the sustainable recovery of rare earth elements (REEs), which are in increasing demand for use in green ...
Analytical Chemistry
Jun 5, 2024
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321
A research team led by Prof. Huang Xingjiu from the Hefei Institutes of Physical Science of the Chinese Academy of Sciences constructed a highly stable solid contact calcium ion-selective electrode. They used synchrotron ...
Analytical Chemistry
Jun 1, 2024
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1
If you go to the beach and dip a bucket in the sea, you might at first think it contains lifeless water. But examine that water under a microscope and you will see your bucket contains a universe of microscopic life, in the ...
Ecology
May 13, 2024
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Biomineralized columns, stacked in layers like a sandwich gave Cambrian brachiopod shells their strength and flexibility 520 million years ago.
Evolution
Apr 18, 2024
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33
Even intense exercise by astronauts cannot compensate for muscle atrophy caused by microgravity. Atrophy occurs, in part, by way of an underlying mechanism that regulates calcium uptake. Recent research has shown exposure ...
Space Exploration
Apr 17, 2024
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Calcium (pronounced /ˈkælsiəm/) is the chemical element with the symbol Ca and atomic number 20. It has an atomic mass of 40.078 amu. Calcium is a soft grey alkaline earth metal, and is the fifth most abundant element by mass in the Earth's crust. Calcium is also the fifth most abundant dissolved ion in seawater by both molarity and mass, after sodium, chloride, magnesium, and sulfate.
Calcium is essential for living organisms, particularly in cell physiology, where movement of the calcium ion Ca2+ into and out of the cytoplasm functions as a signal for many cellular processes. As a major material used in mineralization of bones and shells, calcium is the most abundant metal by mass in many animals.
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