817,254 articles

2012 noctilucent cloud season begins

(Phys.org) -- Data from NASA's AIM spacecraft show that noctilucent clouds (NLCs) are like a great "geophysical light bulb". They turn on every year in late spring, reaching almost full intensity over a period of no more than 5 to 10 days--and the bulb is glowing. "They were visible to the north for about 3 hours as we flew between Ottawa and Newfoundland at 35,000 feet" said Brian Whittaker.

A comprehensive study of ice

A group composed of 17 scientists from 11 different countries has published the most comprehensive study ever done on ice in the world. The study addresses the most important contemporary issues in a field of research that is "red hot", in authors' words.

Barnes & Noble 4Q loss narrows

(AP) — Barnes & Noble said Tuesday that its fiscal fourth-quarter loss narrowed as the company continues to invest in its Nook e-reader business.

Bright white:Organic acids prevent decomposition and discoloration of an antitumor agent

(Phys.org) -- Would you want to swallow a tablet that’s yellow rather than its usual white? Would this effect be harmless and would the drug still be efficient? Researchers in India have now described an approach to maintaining the color and activity of an antitumor agent. As they report in Chemistry - An Asian Journal, acids can protect powders of the drug from discoloration and loss of...

British group outlines plan for open-access publishing for publicly funded research papers

(Phys.org) -- The computer and subsequent Internet age have brought all manner of change to modern society, one of which is easy access to published scientific research papers; where before it would typically take months for a paper to be published, now it can be done almost instantly and accessed just as quickly. But with such change comes resistance as established entities seek to hold on to...

Carbon scheme in danger of going up in smoke

(Phys.org) -- Australia’s carbon-pricing scheme is a world-leader and shows the way forward for other countries seeking to mitigate carbon emissions, says an expert from The Australian National University. However, political squabbling runs the risk of turning the world’s best carbon pricing scheme into the world’s shortest-lived.

Chemists offer law enforcement crime solving tool

(Phys.org) -- University at Albany researchers have developed a method to determine the caliber and type of weapon used in a crime by analyzing gunshot residue (GSR). Using near-infrared (NIR) Raman microspectroscopy and advanced statistics, the new technique may play a pivotal role in law enforcement cases and forensic investigations. The research was highlighted in a recent issue...

Copper fields: Quantum criticality in high-temperature cuprate superconductors

(Phys.org) -- Superconductivity is a complex phenomenon that is considerably more intricate than many casual observers realize. This caveat applies equally to the subset of this research known as high-temperature superconductivity – which, it should be noted, is described as such only in relation to the near absolute zero temperature range at which conventional superconductors are found, and...

From pomegranate peel to nanoparticles

Food waste is a growing problem in many parts of the world, but discarded fruit peel, in the case of pomegranates, could be put to good use in the burgeoning field of nanotechnology according to research published in the International Journal of Nanoparticles.

Graphene decoupling of organic/inorganic interfaces

(Phys.org) -- Cryogenic ultrahigh vacuum scanning tunneling microscopy (STM) was employed by researchers in the Center for Nanoscale Materials Electronic & Magnetic Materials & Devices Group at the Argonne National Laboratory to uncover exceptionally weak molecule-surface interactions between fullerene C60 deposited onto epitaxially grown graphene on silicon carbide substrates.

Schooling fish: Wild zebrafish assess risk through social learning

Sarah Zala and Dustin Penn from the Konrad Lorenz Institute of Ethology of the University of Veterinary Medicine, Vienna investigated whether zebrafish use social learning to assess risk. They found that wild zebrafish, which are more timid than their domesticated counterparts, became emboldened after interacting with domesticated zebrafish. The opposite did not occur, however. The study is...

Sony announces the development of the 'Spectral' cell analyzer prototype

Sony Corporation today announced the development of ‘Spectral’ cell analyzer, its second ‘flow cytometer’ cell analysis instrument for the optical analysis of cells. Sony will also exhibit its prototype at ISAC (the International Society for Advancement of Cytometry) in Leipzig, Germany, from June 23 - 27.

UK cyclists take different paths

Vast differences in cycling cultures have been found in UK cities; for some cycling is a traditional transport accessible to all while for others it is a new edgy, urban subculture according to recent findings from a research project funded by the Economic and Social Research Council (ESRC). "We wanted to find out what British cycling cultures were like, what supported them, and what local and...