Current Calcium Carbonate News and Events

Current Calcium Carbonate News and Events, Calcium Carbonate News Articles.
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Can bacteria make stronger cars, airplanes and armor?
Biological systems can harness their living cells for growth and regeneration, but engineering systems cannot. Until now.Researchers are harnessing living bacteria to create engineering materials that are strong, tolerant, and resilient. (2021-02-22)

First DNA extracted from modern, ancient and fossil tropical shells
The next time you eat seafood, think about the long-term effects. Will consistently eating the biggest fish or the biggest conch, mean that only the smaller individuals will have a chance to reproduce? (2021-02-22)

Fishes contribute roughly 1.65 billion tons of carbon in feces and other matter annually
Scientists have little understanding of the role fishes play in the global carbon cycle linked to climate change, but a Rutgers-led study found that carbon in feces, respiration and other excretions from fishes - roughly 1.65 billion tons annually - make up about 16 percent of the total carbon that sinks below the ocean's upper layers. (2021-02-17)

Self-healing concrete for regions with high moisture and seismic activity
Preparing regular concrete scientists replaced ordinary water with water concentrate of bacteria Bacillus cohnii, which survived in the pores of cement stone. The cured concrete was tested for compression until it cracked, then researchers observed how the bacteria fixed the gaps restoring the strength of the concrete. The engineers of the Polytechnic Institute of Far Eastern Federal University (FEFU), together with colleagues from Russia, India and Saudi Arabia, reported the results in Sustainability journal. (2021-02-17)

Plant-based diet and bone health: adequate calcium and vitamin D intakes should be ensured
In a study conducted at the University of Helsinki, partial replacement of animal protein with plant protein in the diet altered bone metabolism and decreased calcium and vitamin D intakes. (2021-02-10)

Ural Federal University scientists developed a new way of synthesis of high-purity zircon
A research group from Ural Federal University synthesized high-purity single-phase zircon (ZrSiO4) and analyzed its structural, thermal, vibrational and optical properties. The results have been published in the Journal of Solid State Chemistry (Q2) (2021-02-05)

How metal atoms can arrange themselves on an insulator
In order to produce tiny electronic memories or sensors in future, it is essential to be able to arrange individual metal atoms on an insulating layer. Scientists at Bielefeld University's Faculty of Chemistry have now demonstrated that this is possible at room temperature: molecules of the metal-containing compound molybdenum acetate form an ordered structure on the insulator calcite without jumping to other positions or rotating. Their findings have been presented in the Nature Communications journal. (2021-02-04)

Diabetes during pregnancy may increase risk of heart disease
An analysis of more than 1,000 women found that a history of gestational diabetes (diabetes during pregnancy) doubled the risk of heart artery calcification - a marker of increased risk for heart disease - many years after pregnancy, at the average age of 48, even if blood sugar returned to healthy levels. (2021-02-01)

Geologists produce new timeline of Earth's Paleozoic climate changes
MIT geologists have produced a new timeline of Earth's Paleozoic climate changes. The record shows ancient temperature variations coinciding with shifts in planet's biodiversity. (2021-02-01)

Automated AI algorithm uses routine imaging to predict cardiovascular risk
Investigators teamed up to develop and evaluate a deep learning system that may help change this. The system automatically measures coronary artery calcium from CT scans to help physicians and patients make more informed decisions about cardiovascular prevention. (2021-01-29)

Important climate change mystery solved by scientists
Scientists have resolved a key climate change mystery, showing that the annual global temperature today is the warmest of the past 10,000 years - contrary to recent research, according to a Rutgers-led study in the journal Nature. (2021-01-27)

Change of course on the journey to the island of stability
An international research team succeeded in gaining new insights into the artificially produced superheavy element flerovium, element 114, at the accelerator facilities of the GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt, Germany. Under the leadership of Lund University in Sweden and with significant participation of Johannes Gutenberg University Mainz (JGU) as well as the Helmholtz Institute Mainz (HIM) in Germany and other partners, flerovium was produced and investigated to determine whether it has a closed proton shell. (2021-01-26)

Multiple sclerosis: Immune cells silence neurons by removing synapses
Damage to the brain gray matter plays an important role in the progression of multiple sclerosis. This study now shows that such damage can be caused by inflammatory reactions that lead to loss of synapses, which impairs neural activity. (2021-01-26)

Climate and carbon cycle trends of the past 50 million years reconciled
In a study published today in Science Advances, University of Hawai'i at Mānoa oceanographers fully reconciled climate and carbon cycle trends of the past 50 million years--solving a controversy debated in the scientific literature for decades. (2021-01-22)

Diamonds need voltage
Diamonds are fascinating - as jewellery but also because of the extreme hardness of the material. How exactly this variant of carbon is formed deep underground and under extremely high pressures and temperatures remains a mystery. Now, researchers from the Russian Academy of Sciences Novosibirsk, collaborating with the German Research Centre for Geosciences GFZ, have documented a new influencing factor in theory and experiment. Weak electric fields can be a decisive catalyst for its formation (2021-01-21)

Oldest carbonates in the solar system
A meteorite that fell in northern Germany in 2019 contains carbonates which are among the oldest in the solar system; it also evidences the earliest presence of liquid water on a minute planet. The high-resolution Ion Probe - a research instrument at the Institute of Earth Sciences at Heidelberg University - provided the measurements. (2021-01-20)

A neuronal cocktail for motivation
'A journey of a thousand miles begins with a single step' is a popular adage that talks about the initial thrust required to embark on a task. However, once begun, how do we persevere on the job and not let it fall apart like a New Year resolution? How do we stay motivated? (2021-01-19)

Acidification impedes shell development of plankton off the US West Coast
Results from a 2016 research cruise show ocean acidification has interfered with shell development of zooplankton that are a critical part of the marine food web. (2021-01-19)

New research reveals early warning sign for heart disease
The build-up of calcium in a major artery outside of the heart could predict future heart attack or stroke, a new Edith Cowan University led study has demonstrated. (2021-01-13)

Mechanisms in the kidney that control magnesium and calcium levels discovered
The gene KCTD1 directs production of a protein that functions in the kidney to maintain a normal balance of magnesium and calcium in blood. Loss of KCTD1 impairs the ability of the kidney to properly absorb magnesium and calcium from urine in the kidney, leading to abnormally low magnesium and calcium blood levels, thereby triggering the parathyroid glands to secrete excess parathyroid hormone that in turn leads to metabolic bone disease. (2021-01-12)

2D CaCl crystals with +1 calcium ions displaying unexpected metallicity and ferromagnetism
Counter to conventional wisdom that the only valence state of Ca ions under ambient conditions is +2 and corresponding crystals are insulating and nonferromagnetic, scientists in China made exciting discoveries of two-dimensional CaCl crystals with +1 calcium ions, which have unexpected metallicity, room-temperature ferromagnetism, heterojunction, piezoelectricity-like property, and distinct hydrogen storage and release capability, showing great potential applications of such abnormal material in designing novel electric and magnetic devices with a size down to atomic scale. (2021-01-05)

CRISPR helps researchers uncover how corals adjust to warming oceans
The CRISPR/Cas9 genome editing system can help scientists understand, and possibly improve, how corals respond to the environmental stresses of climate change. Work led by Phillip Cleves--who joined Carnegie's Department of Embryology this fall--details how the revolutionary, Nobel Prize-winning technology can be deployed to guide conservation efforts for fragile reef ecosystems. (2020-12-21)

Volcanic eruptions directly triggered ocean acidification during Early Cretaceous
New study supports hypothesis that Ontong Java Plateau large igneous province eruptions led to oceanic anoxic event 1a, 127 to 100 million years ago. (2020-12-21)

Nanotechnology -- nanoparticles as weapons against cancer
Ludwig-Maximilians-Universitaet (LMU) in Munich researchers have developed a novel type of nanoparticle that efficiently and selectively kills cancer cells, thus opening up new therapeutic options for the treatment of tumors. (2020-12-18)

New path to rare earth mineral formation has implications for green energy and smart tech
Researchers from Trinity College Dublin have shed new light on the formation mechanisms of a rare earth-bearing mineral that is in increasingly high demand across the globe for its use in the green energy and tech industries. Their discovery has important economic implications because there are no substitute alternatives to these rare earth elements, which are indispensable for smart devices and low-carbon energy generation (e.g., electronics, wind turbines, hybrid cars). (2020-12-17)

University of Oregon researchers solve a Colorado River mystery
University of Oregon researchers have published two papers that provide new evidence that today's desert landscape of the Colorado River's lower valley was submerged roughly 5 million to 6 million years ago under shallow seas with strong, fluctuating tidal currents. (2020-12-16)

Scientists: Xenon improves properties of maxillofacial and orthopedic implants
Scientists of Tomsk Polytechnic University (TPU) jointly with the colleagues from Siberian State Medical University (SSMU) and Immanuel Kant Baltic Federal University (IKBFU) studied the properties of calcium phosphate coatings deposited on titanium implants in various inert gases environment. The researchers managed to discover that the use of xenon positively affects the physicochemical, mechanical and biological properties of the coatings used in oral and maxillofacial surgery, orthopedics and traumatology. (2020-12-15)

Chemists from RUDN University used crab shells to improve palladium catalysts
?hemists from RUDN University synthesized soluble biopolymers based on chitin from crab shells. Together with palladium, they form effective catalysts for organic reactions, and their nanoparticles can be re-used over ten times. (2020-12-14)

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

Patients with non-cardiac chest pain are reassured with brief education
Patients diagnosed with non-cardiac chest pain are reluctant to believe they do not have heart disease. A new study shows that explaining the test results convinces patients and reduces the likelihood of future chest pain. The research is presented at EACVI - Best of Imaging 2020, a scientific congress of the European Society of Cardiology (ESC). Chest pain is one of the most frequent causes of consults at the emergency department. (2020-12-12)

New tool for watching and controlling neural activity
An interdisciplinary team of scientists has created a new molecular tool to help us better understand the cellular basis of behavior. (2020-12-11)

Why failing hearts love hard workouts
High-intensity interval training strengthens the heart even more than moderate exercise does. Now researchers have found several answers to what makes hard workouts so effective. (2020-12-10)

New study allows regional prediction of uranium in groundwater
Stanford researchers can predict where and when uranium is released into aquifers and suggest an easy fix to keep this naturally occurring toxin from contaminating water sources. (2020-12-08)

Coasts drown as coral reefs collapse under warming and acidification
The coastal protection coral reefs currently provide will start eroding by the end of the century, as the world continues to warm and the oceans acidify. The rate of erosion of calcium carbonate on coral reefs will overtake the rate of accretion on the majority of present-day reefs by the end of the century. (2020-12-03)

Can we make bones heal faster?
A new paper in Science Advances describes for the first time how minerals come together at the molecular level to form bones and other hard tissues, like teeth and enamel. (2020-12-03)

Drinking blocks a chemical that promotes attention
UT Health San Antonio scientists studied the cascade of events that begins when alcohol diminishes norepinephrine release in a brain structure called the locus coeruleus. (2020-12-02)

How to spot winning sperm: examine their racing stripes
Millions of sperm enter the race to fertilize, but only one wins the sprint to the egg. Now Yale researchers have discovered that these winning sperm possess a few key molecular characteristics that differentiate them from those left behind, they report Dec. 1 in the journal eLife. (2020-12-01)

Vitamin D regulates calcium in intestine differently than previously thought
A Rutgers study has discovered that vitamin D regulates calcium in a section of the intestine that previously was thought not to have played a key role. The findings have important implications on how bowel disease, including ulcerative colitis and Crohn's disease, may disrupt calcium regulation. (2020-12-01)

A new strategy for the greener use of calcium carbide
Computational chemists from St Petersburg University and the Zelinsky Institute of Organic Chemistry of the Russian Academy of Sciences have developed a new strategy for using calcium acetylide in the synthesis of organic compounds. The researchers proposed a new approach by analysing the interaction of calcium acetylide with water and dimethyl sulfoxide on the atomic scale. (2020-11-25)

RASi associated with reduced risk of KRT compared with CCB in CKD patients
In a population-based Swedish database, researchers studied the clinical outcomes of starting renin-angiotensin system inhibitor (RASi) or calcium channel blockers (CCB) in 2,458 patients with CKD G4-5. Compared with CCB, RASi initiation was associated with a lower risk of KRT, but similar risks of mortality and major adverse cardiovascular events. These findings suggest that RASi initiation might slow the progression of kidney disease compared with CCB in patients with advanced CKD, and offer similar cardiovascular protection. (2020-11-24)

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