°
Ashburn

Latest News - #chemistry

The plastic recycling and sequestration of carbon dioxide

Indian chemists in collaboration with British colleagues have created a nanoporous material, named as amorphous zeolite, which converts carbon dioxide into fuel and plastic from waste chemicals. The study is published in the journal Nature Communications.

Global warming, caused by greenhouse gas emissions, and pollution of non-biodegradable waste — the most important anthropogenic problems the solution of which I think scientists from different countries.

Russian chemists found a method of producing a metal technetium

Russian scientists from RCTU named after D. I. Mendeleev together with colleagues from other institutes found a simple and cheap method for the synthesis of technetium — expensive and highly sought after metal that is practically not found in nature. The study is published in the journal of Electroanalytical Chemistry.

Technetium is a radioactive element that in large quantities contained in spent nuclear fuel. It is widely used in nuclear medicine as a contrast label for diagnostics of internal organs and tumors, but because of the complex process of obtaining it is very expensive.

Scientists have proposed an unusual method of extraction of rare earth metals

Russian scientists from the Siberian Federal University have developed a new type of sorbent for collecting rare metals from ash and volcanic deposits. It is made on the basis of vikramasila from rice husks. The study is published in the journals Analytical Methods and Separation Science and Technology.

Rare earth elements (REE) or rare earth widely used in the manufacture of modern electronics, lasers, SuperMagnets, electric vehicles, superconductors, metallurgy and medicine. In nature the rare earths are found in scattered form in the form of oxides, and this severely complicates their extraction on an industrial scale.

Scientists have confirmed the early appearance of the first humans in America

British and American scientists have proved that the fossilized feces in the Paisley caves in the Western United States belong to the ancient people who lived here more than 12 thousand years ago, before the advent of Clovis culture. The study is published in the journal Science Advances.

For a long time, until the second half of the twentieth century, it was believed that representatives of culture Clovis were the first people appeared on the American continent. Later Dating of the appearance of people in America have been adjusted, and the theory of the "Clovis — first" — denied. Since then, the archaeologists are constantly looking for evidence of the presence of precursors to Clovis.

Traces of plutonium from the damaged Fukushima reactors have been found throughout Japan

Scientists from six countries using advanced analytical techniques found that the plutonium contained in nuclear fuel plant Fukushima-1, destroyed in March 2011, still contained in the environment in the composition of micro-particles ejected during an accident. The study is published in the journal Science of the Total Environment.

Environmentalists and chemists previously noted that the materials released into the atmosphere, soil and seawater after the accident, contained traces of plutonium, but its physical, chemical and isotopic forms remained unknown.

Scientists figured out how to highlight the places of accumulation of calcium in the body

Russian chemists in cooperation with German colleagues have synthesized compounds that are able to highlight the contrast with the calcium ions in solutions, biological tissues and even within cells. The method will find application in the treatment of bone diseases and in non-invasive diagnosis of different tumors associated with excess risk of soft tissue calcification. Description of the development published in the journal Sensors and Actuators B: Chemical.

The study was conducted by staff of the Department of chemistry and technology of biomedical preparations RCTU named after D. I. Mendeleev, in cooperation with the Institute of gene biology of RAS, Institute General physics of RAS, as well as the Technical University of Chemnitz and the University of Erlangen-Nuremberg in Germany. The work is executed at support of Russian science Foundation grant.

Skoltech scientists said the formula for water

Russian scientists in cooperation with German colleagues have found that the water contains large amounts of short-lived ions. This radically changes the understanding of the dynamic water structure and approaches to the assessment of acidity. The study is published in the journal Scientific Reports.

Natural water is a composition of a mixture of isotopologues —combinations of different isotopes of oxygen and hydrogen, the two elements that make up water.

Astronomers have discovered a new source of carbon in the Universe

Analysis of white dwarfs in the milky Way and other galaxies showed that stars of this class can be an important source of carbon — an element necessary for life. The study is published in the journal Nature Astronomy.

All the carbon atoms in the Universe were created by fusion of three helium atoms. But astrophysicists are still arguing, stars what are the primary carbon source.

Russian scientists have found a way to accelerate the growth of plants in greenhouses

Researchers from the ITMO University together with the specialists of Tomsk Polytechnic University have created a special glass-ceramic with the addition of chrome for the lights in the greenhouses. Under their light, the plants grow faster. Description of the development appears in the journal Optical Materials.

Many saw in the Windows of houses a bright pink glow is a special lamp used by the owners indoor plants for their flowers did not lack in light. Similar lamps are used and the farmers, placing them in the greenhouses.

Scientists have developed a cement for bone healing

German scientists have developed based on calcium phosphate cement for bone bonding and manufacture of implants which have the property to regenerate itself. The study is published in the journal Scientific Reports.

The human body is able to cure many injuries and wounds alone, but in complex injuries of the bones required surgical intervention. In such cases, doctors use materials that are partially or fully restore the form and function of bone at the site of injury.