Because many materials are handled in industrial applications as suspensions, engineers need to understand how to predict their flow properties. However, they have been hard-pressed to understand DST and calculate when it will occur during processing. Since concentrated suspensions are found in everything from consumer products to cement, a range of industries stand to find better ways to manage suspensions.
Earth
High levels of natural gas are escaping from the aging pipes beneath the streets of the nation's capital, creating potentially harmful concentrations in some locations, a new study has found. Natural gas leaks pose explosion risks, health concerns and contribute to climate change. The paper, which appears in the ACS journal Environmental Science & Technology, also provides information that could help companies justify additional financial incentives for fixing leaks quickly.
Rice University scientists have found they can control the bonds between atoms in a molecule.
The molecule in question is carbon-60, also known as the buckminsterfullerene and the buckyball, discovered at Rice in 1985. The scientists led by Rice physicists Yajing Li and Douglas Natelson found that it's possible to soften the bonds between atoms by applying a voltage and running an electric current through a single buckyball.
The researchers detailed their discovery this week in the online Proceedings of the National Academy of Sciences.
Glaciers are important indicators of climate change. Global warming causes mountain glaciers to melt, which, apart from the shrinking of the Greenlandic and Antarctic ice sheets, is regarded as one of the main causes of the present global sea-level rise. Tibet's glaciers are also losing mass clearly, as scientists from the universities of Zurich, Tubingen and Dresden reveal using satellite-based laser measurements.
Just a single foreign atom located in the vicinity of a molecule can change spatial arrangement of its atoms. In a spectacular experiment, an international team of researchers was able to change persistently positions of the nuclei of hydrogen atoms in a porphycene molecule by approaching a single copper atom to the molecule.
The intensity of tropical cyclones hitting East Asia has significantly increased over the past 30 years, according to a new study published today.
The coastlines of China, Korea and Japan in particular have experienced increasingly stronger cyclones, which the researchers have attributed to increasing sea surface temperatures and a change in atmospheric circulation patterns over the coastal seas.
Montreal, January 15, 2014 — When it comes to global warming, there are seven big contributors: the United States, China, Russia, Brazil, India, Germany and the United Kingdom. A new study published in Environmental Research Letters reveals that these countries were collectively responsible for more than 60 per cent of pre-2005 global warming. Uniquely, it also assigns a temperature change value to each country that reflects its contribution to observed global warming.
"The interface is the device," Nobel laureate Herbert Kroemer famously observed, referring to the remarkable properties to be found at the junctures where layers of different materials meet. In today's burgeoning world of nanotechnology, the interfaces between layers of metal oxides are becoming increasingly prominent, with applications in such high-tech favorites as spintronics, high-temperature superconductors, ferroelectrics and multiferroics.
The once-booming, now struggling Olympia oyster native to the West Coast could face a double threat from ocean acidification and invasive predators, according to new research from the University of California, Davis' Bodega Marine Laboratory. The work is published Jan. 15 in the journal Proceedings of the Royal Society B.
Computer security systems may one day get a boost from quantum physics, as a result of recent research from the National Institute of Standards and Technology (NIST). Computer scientist Yi-Kai Liu has devised away to make a security device that has proved notoriously difficult to build—a "one-shot" memory unit, whose contents can be read only a single time.
As if being sick weren't bad enough, there's also the fear of frequent injections, side effects and overdosing on you medication. Now a team of researchers from University of Copenhagen, Department of Chemistry, Nano- science center and the Institut Laue-Langevin (ILL), have shown that reservoirs of anti-viral pharmaceuticals could be manufactured to bind specifically to infected tissue such as cancer cells for the slow concentrated delivery of drug treatments.
ARGONNE, Ill. (Jan. 13, 2014) -- Humans have for ages taken cues from nature to build their own devices, but duplicating the steps in the complicated electronic dance of photosynthesis remains one of the biggest challenges and opportunities for chemists.
Boulder, Colo., USA – Geology adds 19 new articles online, covering locations in China, the Atacama Desert, the Himalaya, Kilauea volcano, Australia, the Mediterranean basin, the Gulf of California, the southern Andes, the Gulf of Cadiz, the northern Red Sea, and offshore Japan. Oceanography is an emphasis in many of the papers, and several articles incorporate modeling studies. Three articles in this collection are open access.
Open Access Papers
Doctoral student Florian Vogel and Dr. Nelia Wanderka from the HZB Institute of Applied Materials have elegantly combined two methods to accomplish this: transmission electron microscopy (TEM) and atom probe tomography (APT), which they carried out in collaboration with colleagues from the University of Münster.
The next time you light a candle and switch on your television ready for a relaxing evening at home, just think. These two vastly different products have much more in common than you might imagine.
Research recently carried out by Prof Tanja Schilling and associates, Muhammad Anwar and Francesco Turci, at the Physics and Material Science Research Unit of the University of Luxembourg made this surprising connection, which works as follows.