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Results 21 - 40 of 223.


Chemistry - Pharmacology - 03.12.2019
Two chiral catalysts working hand in hand
Two chiral catalysts working hand in hand
Chemists at Münster University develop a synthetic method providing access to different stereoisomers of a molecule / Study published in 'Nature Catalysis' Just as our left hand is not superposable to our right hand, the mirror image of certain molecules cannot be overlapped onto it, even when turned or twisted.

Chemistry - Environment - 02.12.2019
New membrane technology to boost water purification and energy storage
Imperial College London scientists have created a new type of membrane that could improve water purification and battery energy storage efforts. The new approach to ion exchange membrane design, which is published today , uses low-cost plastic membranes with many tiny hydrophilic ('water-attracting') pores.

Chemistry - 02.12.2019
Chemistry breakthrough could help produce new drugs, molecules
Olefins are one of those molecules that most people don't recognize, but that appear all around us: in bottles, in medicines, in wetsuits and in tires. Now, University of Chicago chemists have discovered an efficient method to make a kind of olefin with four different attachments-used in everything from medicines to new ways to store data.

Health - Chemistry - 02.12.2019
Automated technique helps identify cancer cell metabolism inhibitors
FINDINGS UCLA Jonsson Comprehensive Cancer Center researchers have developed a new automated method for testing hundreds of molecules at a time to find out which ones block cancer cells from consuming glucose — the sugars they need to spread and grow. Using robotics, the researchers tested 3,555 compounds on non-small-cell lung cancer cells.

Earth Sciences - Chemistry - 27.11.2019
Barbequed clams on the menu for ancient Puerto Ricans
Scientists have reconstructed the cooking techniques of the early inhabitants of Puerto Rico by analysing the remains of clams. Led by Philip Staudigel, who conducted the analysis as a graduate student at the University of Miami Rosenstiel School and is now a postdoctoral researcher at Cardiff University, the team has used new chemical analysis techniques to identify the exact cooking temperatures at which clams were cooked over 2500 years ago.

Chemistry - Physics - 27.11.2019
An electron highway headed for methanol
An electron highway headed for methanol
Making methanol just got a lot easier, now that chemists at Yale have opened up a new electron highway. The discovery, published online Nov. 27 , finds a novel solution for two chemical tasks: producing methanol - a volatile, liquid fuel that is prized by industry - and removing carbon dioxide from the atmosphere.

Chemistry - Physics - 27.11.2019
Cutting nanoparticles down to size - new study
A new technique in chemistry could pave the way for producing uniform nanoparticles for use in drug delivery systems. Scientists have been investigating how to make better use of nanoparticles in medicine for several decades. Significantly smaller than an average cell, nanoparticles are more similar in size to proteins.

Innovation - Chemistry - 22.11.2019
Glass from a 3D printer
Glass from a 3D printer
ETH researchers are using a 3D printing method to produce complex, highly porous glass structures. The technology makes it possible to produce made-to-measure objects that may eventually make life difficult for counterfeiters. Producing glass objects using 3D printing is not easy. Only a few groups of researchers around the world have attempted to produce glass using additive methods.

Chemistry - Environment - 20.11.2019
Creating Useful Chemicals Out of Thin Air
Humanity's reliance on fossil fuels is often thought of in the context of energy, but petroleum and natural gas are also important sources of raw materials for the manufacture of commodity chemicals. In concert with efforts to develop sustainable sources of energy, like wind and solar, there has been an increasing push to develop technologies that allow the production of chemicals from renewable resources.

Environment - Chemistry - 18.11.2019
Climate change could double greenhouse gas emissions from freshwater ecosystems
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Chemistry - Life Sciences - 14.11.2019
Chemists use light to build biologically active compounds
Chemists use light to build biologically active compounds
Some of the most biologically active molecules, including synthetic drugs, contain a central, nitrogen-containing chemical structure called an isoquinuclidine. This core has a three-dimensional shape which means it has the potential to interact more favourably with enzymes and proteins than flat, two-dimensional molecules.

Pharmacology - Chemistry - 14.11.2019
Could synthetic molecules provide a general treatment for Cystic Fibrosis?
A new treatment for lung disease in cystic fibrosis (CF) for which there remains no cure could potentially benefit all patients, according to a University of Bristol study published in Chemical Science. The findings are an important step towards a new therapy addressing the fundamental cause of cystic fibrosis.

Chemistry - Materials Science - 14.11.2019
Lifelike chemistry created in lab search for ways to study origin of life
The researchers subjected their chemical soups to a form of selection by taking a small amount of material from one vial and placing it in a new vial with fresh pyrite and chemicals. After multiple generations, they found evidence of chemical networks, represented in yellow, spreading quick enough to avoid dilution.

Chemistry - Physics - 14.11.2019
Observing changes in the chirality of molecules in real time
Chiral molecules - compounds that are mirror images of each other - play an important role in biological processes and in chemical synthesis. Chemists at ETH Zurich have now succeeded for the first time in using ultrafast laser pulses to observe changes in chirality during a chemical reaction in real time.

Chemistry - Physics - 14.11.2019
New synthesis approach for soluble silicon clusters
New synthesis approach for soluble silicon clusters
Theoretical calculations indicate that under certain conditions silicon can endow solar cells with a much higher efficiency. Small silicon clusters may provide a source of accordingly modified silicon. However, to date these clusters have not been accessible in soluble form, a prerequisite for flexible processing.

Physics - Chemistry - 13.11.2019
Space rock research could reveal origins of Earth’s oceans
The return of a space probe bearing samples from a distant asteroid is being eagerly anticipated by researchers from the University of Glasgow and Curtin University in Australia. Scientists from the School of Geographical and Earth Sciences will receive three miniscule precious pieces of the asteroid Ryugu when the uncrewed Hayabusa2 mission returns to Earth late next year after six years in space.

Materials Science - Chemistry - 12.11.2019
A cheaper way to scale up atomic layer deposition
A cheaper way to scale up atomic layer deposition
Chemical engineers at EPFL have developed a new method for atomic layer deposition, a technique commonly used in high-quality microelectronics. The new method can be used in materials with larger surfaces much more cheaply than current approaches, while preserving quality and efficiency. Atomic layer deposition (ALD) involves stacking layers of atoms on top of each other like pancakes.

Physics - Chemistry - 12.11.2019
Scientists Explore Egyptian Mummy Bones With X-Rays and Infrared Light to Gain New Insight on Ancient Life
Scientists Explore Egyptian Mummy Bones With X-Rays and Infrared Light to Gain New Insight on Ancient Life
Researchers from Cairo University work with teams at Berkeley Lab's Advanced Light Source to study soil and bone samples dating back 4,000 years Two researchers from Cairo University in Egypt brought 32 bone samples and two soil samples to study using X-ray and infrared light-based techniques at Berkeley Lab's Advanced Light Source (ALS).

Chemistry - 12.11.2019
New testing method helps protect workers - and their skin - from harmful chemicals
People who work in labs, factories and other workplaces are at risk for developing potentially serious skin allergies to the chemicals they use and encounter on the surfaces they touch. The allergies can be so severe that workers may develop chronic skin conditions and, at times, be forced to abandon their careers.

Environment - Chemistry - 11.11.2019
Nitrous oxide emissions set to rise in the Pacific Ocean
Nitrous oxide emissions set to rise in the Pacific Ocean
The acidification of the Pacific Ocean in northern Japan is increasing the natural production rate of N2O, an ozone-depleting greenhouse gas. That's the finding of a study carried out jointly by scientists at EPFL, Tokyo Institute of Technology and Japan Agency for Marine-Earth Science and Technology and appearing recently.