Calcium carbonate

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Calcium carbonate is a chemical compound with the chemical formula CaCO3. It is a common substance found in rock in all parts of the world, and is the main component of shells of marine organisms, snails, pearls, and eggshells. Calcium carbonate is the active ingredient in agricultural lime, and is usually the principal cause of hard water. It is commonly used medicinally as a calcium supplement or as an antacid, but high consumption can be hazardous.

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Watching Proteins Direct Crystal Growth One Step at a Time (w/ Video)

Watching Proteins Direct Crystal Growth One Step at a Time (w/ Video)

Nanotechnology / Nanophysics

created 13 hours ago | popularity 5 / 5 (1) | comments 0

(PhysOrg.com) -- Scientists at Berkeley Lab's Molecular Foundry imaged the growth of protein-studded mineral surfaces with unprecedented resolution and provided a glimpse into how living systems engineer key ...


Acid test: Study reveals both losers and winners of CO2-induced ocean acidification

Acid test: Study reveals both losers and winners of CO2-induced ocean acidification

Space & Earth / Earth Sciences

created Dec 01, 2009 | popularity 4.3 / 5 (13) | comments 8

(PhysOrg.com) -- As the world’s seawater becomes more acidic due to rising atmospheric carbon dioxide, some shelled marine creatures may actually become bigger and stronger, according to a new study.


All decked out: Networks of chitin filaments are integral components of diatom silica shells

Chemistry / Biochemistry

created Dec 01, 2009 | popularity 5 / 5 (1) | comments 0

(PhysOrg.com) -- A whole microcosm of various bizarrely shaped life forms opens up when you look at diatoms, the primary component of ocean plankton, under a microscope. The regularly structured silica shells of these tiny ...





Search results for calcium carbonate


Researchers find increased dairy intake reduces risk of uterine fibroids in black women

Medicine & Health / Diseases

created Dec 04, 2009 | popularity not rated yet | comments 0

Boston University School of Medicine (BUSM) researchers at the Slone Epidemiology Center found that black women with high intake of dairy products have a reduced incidence of uterine leiomyomata (fibroids). This report, based ...


Lithium

Lithium to be extracted from geothermal waste

Technology / Energy

created Dec 14, 2009 | popularity 5 / 5 (15) | comments 4

(PhysOrg.com) -- A technique developed by a Californian company, Simbol Mining, will enable the valuable mineral lithium, widely used in high-density batteries, to be reclaimed from the hot waste water produced ...


Spotting evidence of directed percolation

Spotting evidence of directed percolation

Physics / General Physics

created Nov 17, 2009 | popularity 3.5 / 5 (2) | comments 0

A team of physicists has, for the first time, seen convincing experimental evidence for directed percolation, a phenomenon that turns up in computer models of the ways diseases spread through a population ...


The benefits of stress ... in plants

Biology / Plants & Animals

created Nov 19, 2009 | popularity 5 / 5 (1) | comments 0

Chronic stress in humans has been implicated in heart disease, weight gain, and diabetes, among a host of other health problems. Extreme environments, a source of chronic stress, present a challenge even for the hardiest ...


New research may help to clean drainage from abandoned mines

New research may help to clean drainage from abandoned mines

Space & Earth / Environment

created 11 hours ago | popularity 5 / 5 (2) | comments 0

(PhysOrg.com) -- In a quiet green glen near Ashville, Pa., lies a rust-colored pond. A deep, rectangular hole in the ground, it somewhat resembles an Olympic-sized pool. Few people, however, would make the ...


Fighting climate change by turning CO2 to stone

Fighting climate change by turning CO2 to stone

Space & Earth / Environment

created Nov 17, 2009 | popularity 3.5 / 5 (13) | comments 4

(PhysOrg.com) -- While politicians debate the best ways to cut global carbon dioxide emissions, researchers at Idaho National Laboratory's Center for Advanced Energy Studies are charging ahead on a strategy ...


A RANK insider resolving the enigma of the fever chart

Medicine & Health / Research

created Nov 25, 2009 | popularity not rated yet | comments 0

Mammals have evolved a complex system for controlling bone remodeling. Babies require calcium for healthy bones and they obtain it from their mother's milk. Nursing mothers release calcium from their bones. Surprisingly, ...


New understanding about mechanism for cell death after stroke leads to possible therapy

Medicine & Health / Research

created Nov 22, 2009 | popularity not rated yet | comments 0

Scientists at the Brain Research Centre, a partnership of the University of British Columbia Faculty of Medicine and Vancouver Coastal Health Research Institute, have uncovered new information about the mechanism by which ...


New study links vitamin D deficiency to cardiovascular disease and death

Medicine & Health / Health

created Nov 16, 2009 | popularity 4.8 / 5 (6) | comments 3

While mothers have known that feeding their kids milk builds strong bones, a new study by researchers at the Heart Institute at Intermountain Medical Center in Salt Lake City suggests that Vitamin D contributes to a strong ...


Antioxidant compound reduced incidence of colorectal metachronous adenomas

Medicine & Health / Cancer

created Dec 08, 2009 | popularity 4.5 / 5 (2) | comments 0

Supplementation with a selenium-based antioxidant compound decreased the risk of developing new polyps of the large bowel — called colorectal metachronous adenomas — in people who previously had colorectal polyps removed.



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