news 2013

« BACK

Chemistry



Results 61 - 80 of 206.


Physics - Chemistry - 30.08.2013
A completely new atomic crystal dynamic of the white pigment titanium dioxide discovered
An international team of researchers at Vienna University of Technology in Austria and at Princeton University in the USA has confirmed theoretically-predicted interactions between single oxygen molecules and crystalline titanium dioxide. The results, which could be of importance for a variety of applications, have been published in the current.

Chemistry - Mechanical Engineering - 30.08.2013
How to get fresh water out of thin air
Fog-harvesting system developed by MIT and Chilean researchers could provide potable water for the world's driest regions. In some of this planet's driest regions, where rainfall is rare or even nonexistent, a few specialized plants and insects have devised ingenious strategies to provide themselves with the water necessary for life: They pull it right out of the air, from fog that drifts in from warm oceans nearby.

Physics - Chemistry - 27.08.2013
Existence of new element confirmed
Remember the periodic table from chemistry class in school? Researchers from Lund University in Sweden have presented fresh evidence that confirms the existence of a previously unknown chemical element. The new, super-heavy element has yet to be named. An international team of researchers, led by physicists from Lund University, have confirmed the existence of what is considered a new element with atomic number 115.

Health - Chemistry - 26.08.2013
Disabling enzyme reduces tumor growth, cripples cancer cells, study finds
Disabling enzyme reduces tumor growth, cripples cancer cells, study finds
Knocking out a single enzyme dramatically cripples the ability of aggressive cancer cells to spread and grow tumors, offering a promising new target in the development of cancer treatments, according to a new study by researchers at the University of California, Berkeley. The paper, published today (Monday, Aug.

Life Sciences - Chemistry - 25.08.2013
Mercury levels in Pacific fish likely to rise in coming decades
Mercury levels in Pacific fish likely to rise in coming decades
ANN ARBOR-University of Michigan researchers and their University of Hawaii colleagues say they've solved the longstanding mystery of how mercury gets into open-ocean fish, and their findings suggest that levels of the toxin in Pacific Ocean fish will likely rise in coming decades. Using isotopic measurement techniques developed at U-M, the researchers determined that up to 80 percent of the toxic form of mercury, called methylmercury, found in the tissues of deep-feeding North Pacific Ocean fish is produced deep in the ocean, most likely by bacteria clinging to sinking bits of organic matter.

Physics - Chemistry - 23.08.2013
The gold standard for cell penetration
Paper: "Effect of Particle Diameter and Surface Composition on the Spontaneous Fusion of Monolayer-Protected Gold Nanoparticles with Lipid Bilayers" Gold nanoparticles with special coatings can deliver drugs or biosensors to a cell's interior without damaging it. Cells are very good at protecting their precious contents - and as a result, it's very difficult to penetrate their membrane walls to deliver drugs, nutrients or biosensors without damaging or destroying the cell.

Earth Sciences - Chemistry - 23.08.2013
Morphing manganese
An often-overlooked form of manganese, an element critical to many life processes, is far more prevalent in ocean environments than previously known, according to a study by U.S. and Canadian researchers published this week in Science. The discovery alters scientists' understanding of the chemistry that moves manganese and other elements, like oxygen and carbon, through the natural world.

Physics - Chemistry - 22.08.2013
Computer Simulations Indicate Calcium Carbonate Has a Dense Liquid Phase
Computer simulations conducted at the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) could help scientists make sense of a recently observed and puzzling wrinkle in one of nature's most important chemical processes. It turns out that calcium carbonate-the ubiquitous compound that is a major component of seashells, limestone, concrete, antacids and myriad other naturally and industrially produced substances-may momentarily exist in liquid form as it crystallizes from solution.

Health - Chemistry - 22.08.2013
’Better detection’ for Alzheimer’s and cancers
A new chemical discovery will lead to better monitoring and treatment for cancers and degenerative diseases, according to latest research by scientists. In a paper published today in ChemComm an international team of researchers from the Universities of Birmingham, Bath and the East China University of Science and Technology in Shanghai outline a new approach to detecting 'reactive oxygen' using fluorescence.

Astronomy / Space Science - Chemistry - 20.08.2013
As they form, stars shape their womb from within
As they form, stars shape their womb from within
Star formation is an even more intense and dynamic process than previously thought, according to research based on data from one of the world's newest and most powerful telescopes. As stars form in clouds of gas and dust, they shoot powerful jets of gas and other raw material outward. Analysis of fresh high-resolution images of fast-moving emissions from a well-known protostar refines the existing picture of the outflows' size, shape, and motion, and shows that they are moving at greater velocities than previously measured, researchers report Aug.

Chemistry - Life Sciences - 20.08.2013
Multiple genes manage how people taste sweeteners
UNIVERSITY PARK, Pa. Genetics may play a role in how people's taste receptors send signals, leading to a wide spectrum of taste preferences, according to Penn State food scientists. These varied, genetically influenced responses may mean that food and drink companies will need a range of artificial sweeteners to accommodate different consumer tastes.

Astronomy / Space Science - Chemistry - 16.08.2013
Stellar winds scatter star-forming material
UAlberta astrophysicist's 3-D rendering helps international researchers get unprecedented look at gases escaping from nearby galaxy. UAlberta astrophysicist Erik Rosolowsky created this 3-D rendering of carbon monoxide in the starburst galaxy NGC 253. A University of Alberta astrophysicist's 3-D computer animation is helping an international research team get an unprecedented look at star-forming gases escaping from a nearby galaxy.

Health - Chemistry - 16.08.2013
Nanosensors could aid drug manufacturing
Paper: "Emergent Properties of Nanosensor Arrays: Applications for Monitoring IgG Affinity Distributions, Weakly Affined Hypermannosylation, and Colony Selection for Biomanufacturing" Chemical engineers find that arrays of carbon nanotubes can detect flaws in drugs and help improve production. MIT chemical engineers have discovered that arrays of billions of nanoscale sensors have unique properties that could help pharmaceutical companies produce drugs - especially those based on antibodies - more safely and efficiently.

Chemistry - Life Sciences - 15.08.2013
Discovery of new enzyme could yield better plants for biofuel
The presence of lignin in secondary plant cell walls can be visualized using specific dyes. On this cross section of an Arabidopsis stem, the lignin has been stained red. Photo: Wout Boerjan, VIB, Belgium For nearly a decade, scientists have thought that they understood how plants produce lignin - a compound that gives plant tissues their structure and sturdiness, but can limit their use as a source of biofuels.

Chemistry - Physics - 15.08.2013
Graphene nanoscrolls are formed by decoration of magnetic nanoparticles
Researchers at Umeň University, together with researchers at Uppsala University and Stockholm University, show in a new study how nitrogen doped graphene can be rolled into perfect Archimedean nano scrolls by adhering magnetic iron oxide nanoparticles on the surface of the graphene sheets. The new material may have very good properties for application as electrodes in for example Li-ion batteries.

Chemistry - Environment - 14.08.2013
Raising the IQ of Smart Windows
Researchers at the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) have designed a new material to make smart windows even smarter. The material is a thin coating of nanocrystals embedded in glass that can dynamically modify sunlight as it passes through a window.

Life Sciences - Chemistry - 14.08.2013
Messenger between gut and brain linked to eating behavior
Yale researchers report they may have found a key molecular messenger that links the stomach-to-brain reward circuits and signals the brain it has sufficient calories. Mice placed on a high-fat diet have a deficiency of dopamine, a key neurotransmitter involved in activating reward centers of the brain.

Life Sciences - Chemistry - 14.08.2013
New Biochip Holds Great Promise for Quickly Triaging People After Radiation Exposure
Berkeley Lab scientists have helped to develop a tiny chip that has big potential for quickly determining whether someone has been exposed to dangerous levels of ionizing radiation. The first-of-its-kind chip has an array of nanosensors that measure the concentrations of proteins that change after radiation exposure.

Health - Chemistry - 13.08.2013
New blood stem cell could help solve platelet shortage
A new type of bone marrow stem cell in mice that is primed to produce large numbers of vital blood-clotting platelets has been discovered. The breakthrough could lead to the development of new treatments to restore platelets in patients who have undergone chemotherapy or a bone marrow transplant. A team funded by the Medical Research Council (MRC), and led by scientists at Oxford University's MRC Weatherall Institute of Molecular Medicine, has reported the discovery in the journal Nature .

Health - Chemistry - 12.08.2013
Grapefruit biomolecules may herald new treatment for heart disease
New research published in the 'Biochemical Journal' has identified molecules occurring naturally in fruit that may play an important role in the future treatment of heart disease. Molecules called flavanoids, which are found in citrus fruits - particularly grapefruit - have proven effective at reducing the inflammation which can lead to deadly cardiovascular disease.