Calcium Carbonate Current Events

Calcium Carbonate Current Events, Calcium Carbonate News Articles.
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Hot springs microbes hold key to dating sedimentary rocks, researchers say
Scientists studying microbial communities and the growth of sedimentary rock at Mammoth Hot Springs in Yellowstone National Park have made a surprising discovery about the geological record of life and the environment. Their discovery could affect how certain sequences of sedimentary rock are dated, and how scientists might search for evidence of life on other planets. (2008-01-22)

Coral reefs at risk of losing building material by end of century
A new study suggests that by 2050, most coral reefs around the world are at risk of experiencing constant depletion of one of their building blocks - calcium carbonate sediments. (2018-02-22)

Novel nanoparticle made of common mineral may help keep tumor growth at bay
Engineers at Washington University in St. Louis found a way to keep a cancerous tumor from growing by using nanoparticles of the main ingredient in common antacid tablets. (2016-02-02)

Getting the most from your calcium supplement
Many women (and men) can benefit from calcium supplements to their diets. The December issue of Mayo Clinic Health Letter offers these tips to make sure you are getting the most from calcium supplements. (2000-11-29)

Purdue study finds dairy better for bones than calcium carbonate
A Purdue University study shows dairy has an advantage over calcium carbonate in promoting bone growth and strength. Connie Weaver, distinguished professor and head of the food and nutrition department, found that the bones of rats fed nonfat dry milk were longer, wider, more dense and stronger than those of rats fed a diet with calcium carbonate. (2009-04-28)

Mangroves lock away carbon
Researchers uncover an overlooked process enhancing the carbon-removal potential of mangroves. (2020-12-13)

Skeletons developed as chemistry of oceans changed, study shows
Skeletons and shells first came into being 550 million years ago as the chemical make-up of seawater changed, a study suggests. (2017-04-04)

Exact climate data from the past
Corals and cave carbonates can reveal the temperatures that prevailed at the Earth's surface at the time they formed. An international team of geoscientists led by Goethe University Frankfurt, Germany, has developed a new method that makes it possible to identify whether the composition of these deposits was exclusively controlled by temperature, or if the formation process itself exerted an additional control. The new method allows scientists to determine past Earth surface temperatures more reliably. (2020-08-10)

Sea shells for sale: A new source of sustainable biomaterials
Over 7 million tonnes of mollusc shells are discarded by the seafood industry each year as unwanted waste -- and the vast majority of these shells are either thrown in landfills or dumped at sea. Dr. James Morris and a team of CACHE researchers from the Royal Belgian Institute of Natural Sciences are looking at environmentally and economically sustainable options for these biomaterials. (2017-07-04)

Calcium citrate trumps calcium carbonate in osteoporosis studies
Three studies from UT Southwestern Medical Center at Dallas researchers show that calcium citrate is better absorbed than calcium carbonate and is effective at preventing osteoporosis in early post-menopausal women. (1999-11-22)

Is theory on Earth's climate in the last 15 million years wrong?
A key theory that attributes the climate evolution of the Earth to the breakdown of Himalayan rocks may not explain the cooling over the past 15 million years, according to a Rutgers-led study. The study in the journal Nature Geoscience could shed more light on the causes of long-term climate change. It centers on the long-term cooling that occurred before the recent global warming tied to greenhouse gas emissions from humanity. (2019-09-23)

Mother-of-pearl's genesis identified in mineral's transformation
How nacre, or mother-of-pearl, is first deposited by the animals that make it has eluded discovery despite decades of scientific inquiry. Now, a team of Wisconsin scientists reports the first direct experimental observations of nacre formation at its earliest stages in a mollusk. (2015-10-20)

Fishdunnit! Mystery solved
In a new article in Science, an international team of scientists has solved a mystery that has puzzled marine chemists for decades. They have discovered that fish contribute a significant fraction of the oceans' calcium carbonate production, which affects the delicate pH balance of seawater. The study gives a conservative estimate of three to 15 percent of marine calcium carbonate being produced by fish, but it could be up to three times higher. (2009-01-16)

Increasing Carbon Dioxide Threatens Tropical Coral Reefs
Tropical coral reefs could be harmed by atmospheric carbon dioxide (CO2) entering the oceans; some reefs may already be declining. Joan Kleypas (National Center for Atmospheric Research) comments, (1999-04-01)

UBC researcher gives first-ever estimate of worldwide fish biomass and impact on climate change
Are there really plenty of fish in the sea? University of British Columbia fisheries researcher Villy Christensen gives the first-ever estimate of total fish biomass in our oceans: two billion tons. (2009-01-15)

Zebrafish genetic research results in significant discovery for geobiologists
A researcher at Oregon Health & Science University's Oregon Hearing Research Center and colleagues at the Max Planck Institute have discovered a new gene that has profound effects on the formation of inorganic crystals in the inner ears of zebrafish. (2003-10-09)

A crystal clear view of chalk formation
Chalk crystallizes differently from the way we once thought it did. This discovery will allow the development of new scale inhibitors and other materials, and has also consequences for climate change. (2009-01-23)

Iron fertilization less efficient for deep-sea CO2 storage than previously thought?
Ian Salter from the Alfred Wegener Institute and a team of international collaborators discovered that iron fertilization promotes the growth of shelled organisms. In a naturally iron-fertilized system in the Southern Ocean the growth and sinking of these phytoplankton grazers reduces CO2 deep-ocean storage by up to 30 percent. Ignoring this response could result in overestimating the marine CO2 storage capacity resulting from iron fertilization. The study is published by Nature Geoscience. (2014-11-10)

Deep blue carbon storage
Scientists at USC and Caltech have accelerated a normally slow, natural chemical reaction, by a factor of 500, which could store and neutralize carbon in the deepest recesses of the ocean without harming coral or other organisms. (2017-07-17)

Strength is shore thing for sea shell scientists
Scientists have made synthetic 'sea shells' from a mixture of chalk and polystyrene cups -- and produced a tough new material that could make our homes and offices more durable. (2010-03-08)

Fish guts explain marine carbon cycle mystery
Research reveals the major influence of fish on maintaining the delicate pH balance of our oceans, vital for the health of coral reefs and other marine life. The discovery, made by a team of scientists from the UK, US and Canada, could help solve a mystery that has puzzled marine chemists for decades. Published in Science, the study provides new insights into the marine carbon cycle, which is undergoing rapid change as a result of global CO2 emissions. (2009-01-15)

Using bacteria to protect roads from deicer deterioration
Special bacteria that help form limestone and marble could soon have a new job on a road crew. Recent research from Drexel University's College of Engineering shows how the bacteria, called Sporosarcina pasteurii, can be used to prevent the road degradation caused by ice-melting salt. (2019-04-09)

New book on calcium signaling from Cold Spring Harbor Laboratory Press
Calcium ions play a critical role in signaling in a wide variety of cells and tissues, including muscle, immune cells, neurons, the liver, and oocytes. (2011-10-03)

Nucleation a boon to sustainable nanomanufacturing
Young-Shin Jun, professor of energy, environmental & chemical engineering in the School of Engineering & Applied Science, and Quingun Li, a former doctoral student in her lab, are the first to measure the activation energy and kinetic factors of calcium carbonate's nucleation. (2018-09-19)

As CO2 acidifies oceans, scientists develop a way to measure effect on marine ecosystems
Man-made emissions have dramatically increased the CO2 content of oceans and acidified their surface waters. Now scientists in Israel have for the first time developed a way to quantify how acidification is affecting marine ecosystems on an oceanic basin scale. Studying a 5,000 km strip of ocean, they developed a new way to assess overall calcification rates of coral reefs and open sea plankton based on variations in surface water chemistry. (2014-11-19)

Basaltic rocks in Iceland effective sinks for atmospheric carbon dioxide
Atmospheric carbon dioxide injected into volcanic rock as part of a pilot project in Iceland was almost completely mineralized, or converted to carbonate minerals, in less than two years, a new study shows. (2016-06-09)

Mystery dissolves with calcium pump discovery
Geo-microbiologists from Arizona State University have solved a long-standing conundrum about how some photosynthetic microorganisms, endolithic cyanobacteria, bore their way into limestone, sand grains, mussel shells, coral skeletons and other substrates composed of carbonate. (2010-11-30)

Scientists find evolution of life
A trio of scientists including a researcher from the Lawrence Livermore National Laboratory has found that humans may owe the relatively mild climate in which their ancestors evolved to tiny marine organisms with shells and skeletons made out of calcium carbonate. (2003-10-30)

Sea urchin spurs new ideas for lightweight materials
Materials researchers love sea creatures. Mother-of-pearl provokes ideas for smooth surfaces, clams inspire gluey substances, shark's skin is used to develop materials that reduce drag in water, and so on. Researchers at the University of Copenhagen's Department of Chemistry have now found a model for strong, lightweight materials by diving below the sea surface to investigate a sea urchin cousin known as the heart urchin. (2015-11-10)

Ocean acidification could have broad effects on marine ecosystems
Concern about increasing ocean acidification has often focused on its potential effects on coral reefs, but broader disruptions of biological processes in the oceans may be more significant, according to Donald Potts, a professor of ecology and evolutionary biology at UC Santa Cruz and an expert in coral reef ecology and marine biodiversity. (2008-12-17)

Ocean acidification affects mussels at early life stages
Mussels protect themselves against environmental disturbances and enemies through a hard, calcareous shell. Increased ocean acidification makes it difficult for organisms to form their shells. In a study published today, in the international journal, Nature Communications, a group of scientists from the Kiel University and GEOMAR Helmholtz Centre for Ocean Research Kiel show that mussel larvae react sensitively to ocean acidification, which leads to reduced calcification rates and shell dissolution. (2017-11-22)

Ben-Gurion U. research leads to improved calcium supplement derived from crustacean shells
Using new technology inspired by the crustaceans' natural process, the BGU researchers tested this synthetic ACC compound against other commonly used calcium supplements. Results showed that the absorption and retention rates were up to 40 percent higher in the blood and 30 percent higher in bone when the ACC compound is compared to other calcium sources. Such dramatic enhancement in absorption may be useful in reducing the necessary dosage of calcium. The supplement will be available in 2011. (2011-02-17)

Calcium plus vitamin D supplementation does not reduce joint symptoms in postmenopausal women
A team of investigators systematically analyzed the effect of calcium and vitamin D supplementation on joint symptoms in a rigorous and controlled study of postmenopausal women. They found that supplementation did not reduce the severity of joint symptoms reported by the participants. Their results are published in the Journal of the Academy of Nutrition and Dietetics. (2013-08-15)

Alkaline soil, sensible sensor
Producers sometimes face challenges that go deep into the soil. They need answers to help the soil, on site. A portable field sensor can accurately measure minerals in soils more easily and efficiently than existing methods. And a research team, including a middle school student and her scientist father, can confirm it. (2017-08-02)

Oceans' acidity influences early carbon dioxide and temperature link estimates
An international team of geoscientists believes that carbon dioxide, and not changes in cosmic ray intensity, was the factor controlling ancient global temperatures. The new findings resulted from the researchers inclusion of the ocean's changing acidity in their calculations. (2004-03-16)

Scientists discover at the European Synchrotron the first fossil brain
A 300-million-year-old brain of a relative of sharks and ratfish has been revealed by French and American scientists using synchrotron holotomography at the European Synchrotron Radiation Facility. It is the first time that the soft tissue of such an old fossil brain has ever been found. (2009-03-02)

Impurities in biominerals reveal key to understanding climate change, will lead to novel materials
The calcium carbonate skeletons produced by ocean organisms contain important clues to Earth history. By observing the microscopic growth of calcium carbonate crystals using the atomic force microscope, researchers have observed for the first time the fundamental physical processes that help govern climate change and ocean chemistry through the formation of biominerals. (2000-11-08)

The structure is decisive
Blue-green algae are one of the oldest organisms in the world and have an important role to play in many ecosystems on Earth. However, it has always been difficult to identify fossils as blue-green algae without any trace of doubt. The reason is their unremarkable sheath made of calcium carbonate. A master's student at Friedrich-Alexander-Universität Erlangen-Nürnberg has now developed a method which can help assign organisms to a particular species. (2018-03-26)

Hard soft coral: New genus and species of 'living fossil' octocoral related to blue coral
A new species and genus of octocoral (Cnidaria Anthozoa) was described from Zamami Island Okinawa Japan, Nanipora kamurai. Molecular phylogenetic analyses showed that the species is closely related to genus Heliopora, and can be considered a 'living fossil.' The study was published in the open-access journal ZooKeys. (2015-07-02)

Shell-shocked: Ocean acidification likely hampers tiny shell builders in Southern Ocean
University of Colorado Boulder study shows a ubiquitous type of phytoplankton -- tiny organisms that are the base of the marine food web -- appears to be suffering from the effects of ocean acidification caused by climate change. (2015-03-25)

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