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Opposing phenomena possible key to high-efficiency electricity delivery

By Guest PostDecember 29, 2013Scienceali yazdani, andras gyenis, binghamton university, british columbia, coexistence, copper oxide, da silva neto, eduardo, electricity delivery, high efficiency, high temperature superconductors, hts, material, mystery in physics, pegor aynajian, phenomena, princeton university, rigid pattern, superconductivity, university, xray scattering technique

The coexistence of two opposing phenomena might be the secret to understanding the enduring mystery in physics of how materials heralded as the future of powering our homes and communities actually work, according to Princeton University-led research. Such insight could help spur the further development of high-efficiency electric-power delivery.

Published in the journal Science, the findings provide a substantial clue for unraveling the inner workings of high-temperature superconductors (HTS) based on compounds containing copper and oxygen, or copper oxides. Copper-oxide high-temperature superconductors are prized as a material for making power lines because of their ability to conduct electricity with no resistance. It’s been shown that the material can be used to deliver electrical power like ordinary transmission lines, but with no loss of energy. In addition, typical superconductors need extremely low temperatures of roughly -243 degrees Celsius (-405 degrees Fahrenheit) to exhibit this 100-percent efficiency. A copper oxide HTS, however, can reach this level of efficiency at a comparatively toasty -135 degrees Celsius (-211 degrees Fahrenheit), which is achievable using liquid nitrogen. (more…)

Angelina Jolie Effect: Breast Cancer Awareness vs. Knowledge

By Guest PostDecember 28, 2013Healthangelina jolie effect, breast cancer awareness, breast cancer risk, genetic testing, preventive double mastectomy

COLLEGE PARK, Md. – Angelina Jolie heightened awareness about breast cancer when she announced in a New York Times op-ed that she had undergone a preventive double mastectomy. But a new study led by researchers in the University of Maryland School of Public Health and the Johns Hopkins School of Public Health reveals that widespread awareness of Jolie’s story did not translate into increased understanding of breast cancer risk. (more…)

The Virus That Makes a Disposable Syringe

By Guest PostDecember 28, 2013Sciencealpha helical molecules, bacterial cell, bacteriophage, tail structure, virus

For decades, no one knew how a virus that preys on bacteria transfers its DNA into the host cells because it appeared to lack the structures other viruses use for that process. Now researchers have discovered how the virus does it – using a structure that might hold applications for nanotechnology. (more…)

Umfrage: Kraftstoffverbrauch ist wichtigstes Kriterium beim Autokauf

By Guest PostDecember 28, 2013Environmentautokauf, co2 emissionen, dena, deutschen energie agentur, deutschland, energieeffiziente verkehrssysteme, kfz steuer, kraftstoffverbrauch, kriterium, meinungsforschungsinstitut tns emnid, pkw label, stefan siegemund, umfrage

Pkw-Label bietet alle Energiedaten auf einen Blick. Bekanntheit soll über Handel gesteigert werden

Wer sich in Deutschland ein Auto kaufen möchte, der will vor allem wissen, wie hoch der Kraftstoffverbrauch und die Kraftstoffkosten sind. Nach einer Umfrage im Auftrag der Deutschen Energie-Agentur (dena) geben rund zwei Drittel der Kaufinteressierten an, dass diese beiden Kriterien ihnen bei der Fahrzeugwahl sehr wichtig sind. Andere Kriterien wie Antriebsart, Größe, Leistung oder Marke kommen dagegen nicht über vierzig Prozent. Die dena empfiehlt deshalb Autokäufern, sich nach dem Pkw-Label zu erkundigen. Die Kennzeichnung ist seit Dezember 2011 Pflicht für Neuwagen und informiert über Kraftstoffverbrauch, Kraftstoffkosten und CO₂-Emissionen eines Fahrzeugs. (more…)

Scientists solve a decades-old mystery in the Earth’s upper atmosphere

By Guest PostDecember 28, 2013Sciencebinbin ni, chorus, craig kletzing, data driven, decades old mystery, earth, electron acceleration, emfisis, extremely energetic particles, geoff reeves, global wave model, inward, jacob bortnik, james van allen, local stochastic acceleration, low frequency, planetary magnetospheres, qianli ma, radial diffusive transport, radiation belts, radio wave, scientists, solve, space scientist, ultra relativistic electrons, university of iowa, upper atmosphere, van allen

New research published in the journal Nature resolves decades of scientific controversy over the origin of the extremely energetic particles known as ultra-relativistic electrons in the Earth’s near-space environment and is likely to influence our understanding of planetary magnetospheres throughout the universe.

Discovering the processes that control the formation and ultimate loss of these electrons in the Van Allen radiation belts — the rings of highly charged particles that encircle the Earth at a range of about 1,000 to 50,000 kilometers above the planet’s surface — is a primary science objective of the recently launched NASA Van Allen Probes mission. Understanding these mechanisms has important practical applications, because the enormous amounts of radiation trapped within the belts can pose a significant hazard to satellites and spacecraft, as well astronauts performing activities outside a craft. (more…)

Big data and how to use it

By Guest PostDecember 28, 2013Economy, Technologybank of america, big data, bintong chen, bruce weber, charles riordan, chitra dorai, consumer analytics, courtney smith goodrich, data analytics, david schweidel, emory university, era, hannah montana, ifsa, industry applications, information systems, jason van hulse, jpmorgan chase, magic, nate silver, pratap manyam, raj venkatesan, Science, sequencing, skyrocketed, Technology, university of delaware

UD Consumer Analytics and Industry Applications conference discusses big data

In the era of big data come big questions about how to use it. These questions and more were the backdrop of the recent Consumer Analytics and Industry Applications conference, put on by the University of Delaware’s Institute for Financial Services Analytics (IFSA).

“We are living in a big data world,” said IFSA director and professor of business administration, Bintong Chen. The institute is a collaboration between UD’s Alfred Lerner College of Business and Economics, the College of Engineering and JPMorgan Chase. (more…)

An Inside Look at a MOF in Action

By Guest PostDecember 28, 2013Scienceals, atmosphere, berend smit, berkeley lab, carbon dioxide gas, david prendergast, gas adsorption, gas molecules, global climate change, inside look, jacs, jeff kortright, jeffrey long, jeffrey neaton, metal organic framework, mg mof 74, mof in action, molecules, nano, nexafs, open metal site, roberta poloni, thomas mcdonald, united states, vulcan, walter drisdell

Berkeley Lab Researchers Probe Into Electronic Structure of MOF May Lead to Improved Capturing of Greenhouse Gases

A unique inside look at the electronic structure of a highly touted metal-organic framework (MOF) as it is adsorbing carbon dioxide gas should help in the design of new and improved MOFs for carbon capture and storage. Researchers with the U.S. Department of Energy (DOE)’s Lawrence Berkeley National Laboratory (Berkeley Lab) have recorded the first in situ electronic structure observations of the adsorption of carbon dioxide inside Mg-MOF-74, an open metal site MOF that has emerged as one of the most promising strategies for capturing and storing greenhouse gases. (more…)

Slippery bark protects trees from pine beetle attack, according to CU-Boulder study

By Guest PostDecember 27, 2013Naturebark texture, beetle attacks, pine beetle attack, pine beetle epidemic, resin ducts, slippery bark

Trees with smoother bark are better at repelling attacks by mountain pine beetles, which have difficulty gripping the slippery surface, according to a new study by the University of Colorado Boulder. (more…)

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