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Chemistry - Physics - 09.03.2023
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Chemistry
Results 21 - 40 of 3173.
Access to new fluorescent materials
Significantly increased efficiency of fluorescence - Wide range of applications in everyday life Fluorescence is a fascinating natural phenomenon. It is based on the fact that certain materials can absorb light of a certain wavelength and then emit light of a different wavelength. Fluorescent materials play an important role in our everyday lives, for example in modern screens.
Significantly increased efficiency of fluorescence - Wide range of applications in everyday life Fluorescence is a fascinating natural phenomenon. It is based on the fact that certain materials can absorb light of a certain wavelength and then emit light of a different wavelength. Fluorescent materials play an important role in our everyday lives, for example in modern screens.
Biochemical synthesis discovery could unlock new drug development breakthroughs
A mystery about how a chemical compound found in nature could be synthesised in the lab may have been solved, scientists say - a breakthrough which could unlock new developments in medicine. Scientists from universities and research institutions in Scotland and Germany are behind the discovery, published in the journal Nature Chemistry .
A mystery about how a chemical compound found in nature could be synthesised in the lab may have been solved, scientists say - a breakthrough which could unlock new developments in medicine. Scientists from universities and research institutions in Scotland and Germany are behind the discovery, published in the journal Nature Chemistry .
Smoke particles from wildfires can erode the ozone layer
MIT chemists show the Australian wildfires widened the ozone hole by 10 percent in 2020. Close A wildfire can pump smoke up into the stratosphere, where the particles drift for over a year. A new MIT study has found that while suspended there, these particles can trigger chemical reactions that erode the protective ozone layer shielding the Earth from the sun's damaging ultraviolet radiation.
MIT chemists show the Australian wildfires widened the ozone hole by 10 percent in 2020. Close A wildfire can pump smoke up into the stratosphere, where the particles drift for over a year. A new MIT study has found that while suspended there, these particles can trigger chemical reactions that erode the protective ozone layer shielding the Earth from the sun's damaging ultraviolet radiation.
Electric Vehicle Batteries Could Get Big Boost With New Polymer Coating
Scientists at Lawrence Berkeley National Laboratory ÜBerkeley Lab) have developed a conductive polymer coating - called HOS-PFM - that could enable longer lasting, more powerful lithium-ion batteries for electric vehicles. "The advance opens up a new approach to developing EV batteries that are more affordable and easy to manufacture,” said Gao Liu, a senior scientist in Berkeley Lab's Energy Technologies Area who led the development of the material.
Scientists at Lawrence Berkeley National Laboratory ÜBerkeley Lab) have developed a conductive polymer coating - called HOS-PFM - that could enable longer lasting, more powerful lithium-ion batteries for electric vehicles. "The advance opens up a new approach to developing EV batteries that are more affordable and easy to manufacture,” said Gao Liu, a senior scientist in Berkeley Lab's Energy Technologies Area who led the development of the material.
Researchers investigate the influence of oxidative stress on peptide aggregation
Despite considerable advances in research, there is still no cure for many age-related diseases, such as Alzheimer-s. One hypothesis for the development of Alzheimer's is the aggregation of peptides, i.e. their -clumping-, in the brains of people with the disease. But stress has also been suspected as a possible trigger.
Despite considerable advances in research, there is still no cure for many age-related diseases, such as Alzheimer-s. One hypothesis for the development of Alzheimer's is the aggregation of peptides, i.e. their -clumping-, in the brains of people with the disease. But stress has also been suspected as a possible trigger.
How plants communicate at a distance
Plants have a powerful warning system in case of attack, based on a sophisticated communication mode. In a study published in the journal "Cell", the group of Prof. Edward Farmer of the University of Lausanne details the mechanism of propagation of the electrical signal essential to this defense process .
Plants have a powerful warning system in case of attack, based on a sophisticated communication mode. In a study published in the journal "Cell", the group of Prof. Edward Farmer of the University of Lausanne details the mechanism of propagation of the electrical signal essential to this defense process .
Inspired by nature: synthesis of an important molecular ring successful in the laboratory
Chemists use new method for sustainable production of cyclopropanes Tripartite ring-shaped hydrocarbons (cyclopropanes) are important structural subunits in many drugs and materials. Their production in the laboratory is challenging and usually involves the generation of various waste products. The research group led by Nuno Maulide, a chemist at the Faculty of Chemistry at the University of Vienna, has now developed a new nature-inspired process for the sustainable production of cyclopropanes and presented it in the renowned journal JACS (Journal of the American Chemical Society).
Chemists use new method for sustainable production of cyclopropanes Tripartite ring-shaped hydrocarbons (cyclopropanes) are important structural subunits in many drugs and materials. Their production in the laboratory is challenging and usually involves the generation of various waste products. The research group led by Nuno Maulide, a chemist at the Faculty of Chemistry at the University of Vienna, has now developed a new nature-inspired process for the sustainable production of cyclopropanes and presented it in the renowned journal JACS (Journal of the American Chemical Society).
Breaking down household waste and reforming it into products
Previous article Next article We have been separating our waste for many years, but a large part of the waste stream cannot be recycled. Scientists at the University of Twente are researching, in collaboration with companies, how you can make new products from so-called complex and 'wet' waste streams.
Previous article Next article We have been separating our waste for many years, but a large part of the waste stream cannot be recycled. Scientists at the University of Twente are researching, in collaboration with companies, how you can make new products from so-called complex and 'wet' waste streams.
Removing Traces of Life in Lab Helps NASA Scientists Study Its Origins
A specialized laboratory setup at JPL removes the chemical influence of modern organisms so scientists can study the chemistry that may have led to life's emergence. In the Origins and Habitability Lab at NASA's Jet Propulsion Laboratory, you can find a world in a test tube - specifically, a simplified simulation of early Earth.
A specialized laboratory setup at JPL removes the chemical influence of modern organisms so scientists can study the chemistry that may have led to life's emergence. In the Origins and Habitability Lab at NASA's Jet Propulsion Laboratory, you can find a world in a test tube - specifically, a simplified simulation of early Earth.
Chaos on the Nanometer Scale
Sometimes, chemical reactions do not solely run stationary in one direction, but they show spatio-temporal oscillations. At TU Wien, a transition to chaotic behavior on the nanometer scale has now been observed. Chaotic behavior is typically known from large systems: for example, from weather, from asteroids in space that are simultaneously attracted by several large celestial bodies, or from swinging pendulums that are coupled together.
Sometimes, chemical reactions do not solely run stationary in one direction, but they show spatio-temporal oscillations. At TU Wien, a transition to chaotic behavior on the nanometer scale has now been observed. Chaotic behavior is typically known from large systems: for example, from weather, from asteroids in space that are simultaneously attracted by several large celestial bodies, or from swinging pendulums that are coupled together.
Ancient proteins offer new clues about origins of life on Earth
In early Earth simulation co-led by researchers at Johns Hopkins, scientists gain insights into how amino acids shaped the genetic code of ancient microorganisms By simulating early Earth conditions in the lab, researchers have found that without specific amino acids, ancient proteins would not have known how to evolve into everything alive on the planet today-including plants, animals, and humans.
In early Earth simulation co-led by researchers at Johns Hopkins, scientists gain insights into how amino acids shaped the genetic code of ancient microorganisms By simulating early Earth conditions in the lab, researchers have found that without specific amino acids, ancient proteins would not have known how to evolve into everything alive on the planet today-including plants, animals, and humans.
LLNL chemists double down with breakthrough method to study radioactive materials
Studying radioactive materials is notoriously difficult due to their radiation-induced toxicity and risk of contamination when handling. The cost of the radioactive isotopes used in research also is a major barrier, with some costing more than $10,000 per microgram. Certain radioisotopes also cannot be produced in sufficient quantity so it is simply impossible for researchers to study them with current laboratory techniques.
Studying radioactive materials is notoriously difficult due to their radiation-induced toxicity and risk of contamination when handling. The cost of the radioactive isotopes used in research also is a major barrier, with some costing more than $10,000 per microgram. Certain radioisotopes also cannot be produced in sufficient quantity so it is simply impossible for researchers to study them with current laboratory techniques.
New study takes close look at energy storage
Researchers from Giessen and Münster publish detailed analysis of prospects for the development of solid-state batteries / Review in Nature Energy Research into electrochemical energy storage devices and their development are among those fields of material sciences in which most work is being done worldwide.
Researchers from Giessen and Münster publish detailed analysis of prospects for the development of solid-state batteries / Review in Nature Energy Research into electrochemical energy storage devices and their development are among those fields of material sciences in which most work is being done worldwide.
Scientists discover new superacid
Scientists discover new superacid: Substance converts harmful compounds into sustainably usable chemicals Scientists at the University of Paderborn have succeeded in producing very special catalysts, so-called Lewis superacids, with the help of which strong chemical bonds can be split and reactions accelerated.
Scientists discover new superacid: Substance converts harmful compounds into sustainably usable chemicals Scientists at the University of Paderborn have succeeded in producing very special catalysts, so-called Lewis superacids, with the help of which strong chemical bonds can be split and reactions accelerated.
The inner workings of organic light-emitting diodes
How electrons and atomic nuclei make OLEDs glow Organic light-emitting diodes (OLEDs) can be used to generate light from electricity in a cost-effective and sustainable manner. Central to this is the use of efficient dye molecules. A team of theoretical chemists from the University of Vienna has now elucidated how these molecules function by means of computer simulations.
How electrons and atomic nuclei make OLEDs glow Organic light-emitting diodes (OLEDs) can be used to generate light from electricity in a cost-effective and sustainable manner. Central to this is the use of efficient dye molecules. A team of theoretical chemists from the University of Vienna has now elucidated how these molecules function by means of computer simulations.
Where do toxins from tobacco attack DNA?
It is known that toxins in tobacco smoke can change our DNA - but where exactly in the genome they do this has been a mystery. A new approach developed by researchers at ETH Zurich now brings light into the darkness. In the future, this could make it easier than ever to determine the safety of many chemical substances.
It is known that toxins in tobacco smoke can change our DNA - but where exactly in the genome they do this has been a mystery. A new approach developed by researchers at ETH Zurich now brings light into the darkness. In the future, this could make it easier than ever to determine the safety of many chemical substances.
On the Road to Better Solid-State Batteries
A team from Lawrence Berkeley National Laboratory ÜBerkeley Lab) and Florida State University has designed a new blueprint for solid-state batteries that are less dependent on specific chemical elements, particularly critical metals that are challenging to source due to supply chain issues. Their work, reported recently in the journal Science , could advance solid-state batteries that are efficient and affordable.
A team from Lawrence Berkeley National Laboratory ÜBerkeley Lab) and Florida State University has designed a new blueprint for solid-state batteries that are less dependent on specific chemical elements, particularly critical metals that are challenging to source due to supply chain issues. Their work, reported recently in the journal Science , could advance solid-state batteries that are efficient and affordable.
Researchers enhance durability of low-cost solar cells made from nano-sized crystals
An international team of researchers has developed a new technique to enhance the durability of inverted perovskite solar cells - an important step toward commercialization of an emerging photovoltaic technology that could significantly reduce the cost of solar energy. Unlike traditional solar cells, which are made from wafers of extremely high-purity silicon, perovskite solar cells are built from nano-sized crystals.
An international team of researchers has developed a new technique to enhance the durability of inverted perovskite solar cells - an important step toward commercialization of an emerging photovoltaic technology that could significantly reduce the cost of solar energy. Unlike traditional solar cells, which are made from wafers of extremely high-purity silicon, perovskite solar cells are built from nano-sized crystals.
New corrosion protection that repairs itself
Researchers have developed an extraordinary protection against corrosion after a chance discovery. It glows in places where it is not damaged, repairs itself - and can be reused multiple times. Skyscrapers, bridges, ships, aeroplanes, cars - everything humans make or build sooner or later decays. The ravages of time are known as corrosion; nothing is safe from it.
Researchers have developed an extraordinary protection against corrosion after a chance discovery. It glows in places where it is not damaged, repairs itself - and can be reused multiple times. Skyscrapers, bridges, ships, aeroplanes, cars - everything humans make or build sooner or later decays. The ravages of time are known as corrosion; nothing is safe from it.
A more sustainable way to generate phosphorus
MIT chemists found a way to cut the carbon footprint of producing white phosphorus, an ingredient in many consumer products. Close Phosphorus is an essential ingredient in thousands of products, including herbicides, lithium-ion batteries, and even soft drinks. Most of this phosphorus comes from an energy-intensive process that contributes significantly to global carbon emissions.
MIT chemists found a way to cut the carbon footprint of producing white phosphorus, an ingredient in many consumer products. Close Phosphorus is an essential ingredient in thousands of products, including herbicides, lithium-ion batteries, and even soft drinks. Most of this phosphorus comes from an energy-intensive process that contributes significantly to global carbon emissions.
Environment - Mar 27
'It's very special to realize that my research really means something to people'
'It's very special to realize that my research really means something to people'
Life Sciences - Mar 27
U-M grad student receives national award for research on rewiring the brains of fruit flies
U-M grad student receives national award for research on rewiring the brains of fruit flies