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Taking a New Look at Carbon Nanotubes

Berkeley Researchers Develop Technique For Imaging Individual Carbon Nanotubes

Despite their almost incomprehensibly small size – a diameter about one ten-thousandth the thickness of a human hair – single-walled carbon nanotubes come in a plethora of different “species,” each with its own structure and unique combination of electronic and optical properties. Characterizing the structure and properties of an individual carbon nanotube has involved a lot of guesswork – until now.

Researchers with the U.S. Department of Energy (DOE)’s Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California (UC) Berkeley have developed a technique that can be used to identify the structure of an individual carbon nanotube and characterize its electronic and optical properties in a functional device. (more…)

Bestseller verklärt Gewalt gegen Frauen

Der Bestseller «Fifty Shades of Grey» verklärt Gewalt gegen Frauen. Zu diesem Schluss kommt eine Studie der Ohio State University.

Die Fachzeitschrift «Journal of Women’s Health» hat die Studie online veröffentlicht. «Fifty Shades of Grey» schildert die Beziehung zwischen der 22-jährigen Studentin Anastasia Steele und dem sechs Jahre älteren Unternehmer und Multimillionär Christian Grey. Die beiden leben eine von Gewalt geprägte sexuelle Beziehung nach vereinbarten Regeln, denen beide zugestimmt haben. Weltweit wurden mehr als 70 Millionen Exemplare der Trilogie verkauft. (more…)

Should you invest or clear off credit card debt first?

If you have outstanding credit card debt, you might be considering making an investment, the income from which you expect would help make it easier for you to pay back your debt. (more…)

Nanoscale Coatings Improve Stability and Efficiency of Devices for Renewable Fuel Generation

Splitting water into its components, two parts hydrogen and one part oxygen, is an important first step in achieving carbon-neutral fuels to power our transportation infrastructure – including automobiles and planes.

Now, North Carolina State University researchers and colleagues from the University of North Carolina at Chapel Hill have shown that a specialized coating technique can make certain water-splitting devices more stable and more efficient. Their results are published online in two separate papers in the Proceedings of the National Academy of Sciences. (more…)

Milde Gabe für den Eisbär

Schutzkonferenz: Arktis-Staaten wollen Eisbär retten

Berlin/Moskau – Auf der am Freitag in Moskau zu Ende gegangenen Eisbär-Konferenz haben sich die arktischen Anrainerstaaten auf die Eckpfeiler eines umfassenden Aktionsplans verständigt. Die Naturschutzorganisation WWF erklärte, die wichtigsten Ziele auf dem Ministertreffen seien erreicht worden und die internationalen Schutzbemühungen für den Eisbär und seinen Lebensraum hätten politische Rückendeckung erhalten. (more…)

MU Research Sheds Light on Nerve Regeneration Following Spinal Cord Injury

COLUMBIA, Mo. – Fish, unlike humans, can regenerate nerve connections and recover normal mobility following an injury to their spinal cord. Now, University of Missouri researchers have discovered how the sea lamprey, an eel-like fish, regrows the neurons that comprise the long nerve “highways” that link the brain to the spinal cord. Findings may guide future efforts to promote recovery in humans who have suffered spinal cord injuries.

“There is a lot of attention to why, following a spinal cord injury, neurons regenerate in lower vertebrates, such as the sea lamprey, and why they don’t in higher vertebrates, such as humans,” said Andrew McClellan, professor of biological sciences in the College of Arts and Science and director of the UM Spinal Cord Injury Research Program (SCIRP). (more…)

No peak in sight for evolving bacteria

There’s no peak in sight – fitness peak, that is – for the bacteria in Richard Lenski’s Michigan State University lab.

Lenski, MSU Hannah Distinguished Professor of Microbiology and Molecular Genetics, has been running his evolutionary bacteria experiment for 25 years, generating more than 58,000 generations. In a paper published in the current issue of Science, Michael Wiser, lead author and MSU zoology graduate student in Lenski’s lab, compares it to hiking. (more…)