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Researchers Find Gold Nanoparticles Capable of ‘Unzipping’ DNA

By Guest PostJune 23, 2012Scienceanatoli melechko, double helix, double stranded dna, electronics, gene therapy, gold nanoparticles, hydrophobic, justin railsback, nanoelectronic circuits, nanoparticles, organic molecules, timothy mcknight, unzipping dna, yaroslava yingling

New research from North Carolina State University finds that gold nanoparticles with a slight positive charge work collectively to unravel DNA’s double helix. This finding has ramifications for gene therapy research and the emerging field of DNA-based electronics.

“We began this work with the goal of improving methods of packaging genetic material for use in gene therapy,” says Dr. Anatoli Melechko, an associate professor of materials science and engineering at NC State and co-author of a paper describing the research. Gene therapy is an approach for addressing certain medical conditions by modifying the DNA in relevant cells. (more…)

Combating Global Problems at BIARI

By Guest PostJune 22, 2012Environment, General, Scienceaids, ambedkar university delhi, anita elizabeth cherian, armed conflict, barbara willaarts, biari, botin foundation, brazil, brown university, cape town, China, chinese cities, civil society, climate change, courtney coelho, development, end project evaluation, environmental awareness, ethiopia, global problem, grass stage theatre, hiv, hiv awareness, India, junia quiroga de cuhan, kathamandu university, ke zhang, latin america, laureate universities, maria cecelia trannin, nepal, new delhi, nigeria, peking university, population, qing hui hou, rebecca hodes, rio de janeiro, rukmini sen, sagar sharma, shimla, South Africa, university, yunnan province, zheng xie

Some 140 participants and 30 visiting faculty from more than 45 countries arrived at Brown to take part in the Brown International Advanced Research Institutes (BIARI). The two-week program began June 11, 2012.

PROVIDENCE, R.I. [Brown University] — Some 140 participants and 30 visiting faculty from more than 45 countries arrived at Brown to take part in the Brown International Advanced Research Institutes (BIARI). Participants, who were chosen from a pool of more than 850 applicants, come from several countries, including Brazil, China, Nigeria, India, and Ethiopia.

The two-week program began Monday, June 11, 2012. Now in its fourth year, BIARI is centered around four two-week intensive institutes, convened concurrently by Brown faculty, in which participants and leading scholars in their fields share their research and develop new collaborative projects through sustained, high-level dialogue spanning disciplines and continents. This year’s institutes touched on global health and HIV/AIDS; theater and civil society; population and development; and climate change. (more…)

Childhood Obesity Linked to Math Performance, MU Researcher Says

By Guest PostJune 22, 2012Scienceacademic tests, anxious, childhood obesity, elementary grades, kindergarten, math performance, mediated analysis, obesity, sara gable, university of missouri

COLUMBIA, Mo. – Childhood obesity has increased dramatically throughout the past 40 years and has been tied to many health problems. Now, a University of Missouri researcher has found that children’s weight is associated with their math performance.

“The findings illustrate the complex relationships among children’s weight, social and emotional well-being, academics and time,” said Sara Gable, associate professor in the MU Department of Nutrition and Exercise Physiology, who led the study.

Gable looked at more than 6,250 children from the Early Childhood Longitudinal Study-Kindergarten Cohort, a nationally representative sample. The children were followed from the time they started kindergarten through fifth grade. At five points in time, parents provided information about their families, teachers reported on the children’s interpersonal skills and emotional well-being, and children were weighed and measured; they also took academic tests. (more…)

Scientists Reconstruct Pre-Columbian Human Effects on the Amazon Basin

By Guest PostJune 19, 2012Environment, Sciencealan tessier, Amazon, amazon basin, amazon river, archaeological evidence, biodiversity, climate change, crystal mcmichael, cultural parkland, d r piperno, ecological processes, environmental change, european, fit, historical evidence, human disturbance, human populations, luiz lobato, m r silman, madre de dios river, mark bush, national science foundation, peru, peruvian amazon, porto velho manaus, pre columbian amazon, pre columbian times, tropical rainforests

Findings overturn idea that the Amazon had large populations of humans that transformed the landscape

Small, shifting human populations existed in the Amazon before the arrival of Europeans, with little long-term effect on the forest.

That’s the result of research led by Crystal McMichael and Mark Bush of the Florida Institute of Technology (FIT). The finding overturns the idea the Amazon was a cultural parkland in pre-Columbian times with large human populations that transformed vast tracts of the landscape.

The Amazon Basin is one of the highest biodiversity areas on Earth. Understanding how it was modified by humans in the past is important for conservation and for understanding the ecological processes in tropical rainforests. (more…)

Put a cork in it

By Guest PostJune 19, 2012Sciencecork, rohacell, sandwich composites, synthetic foam, vibrational properties, wine bottle stoppers

Paper details use of natural material cork for quiet sandwich composites

Cork, known for its use in such low-tech applications as wine bottle stoppers and bulletin boards, now shows promise as the core material in composite sandwich structures for use in high-tech automotive, aircraft and energy applications. (more…)

Global Science: U.S. is Still in The Game

By Guest PostJune 19, 2012Sciencealexandra achen killewald, america today, american economy, american science, decline, globalization, harvard university, mathematics, new york times, newsweek, popular media, relative scale, Science, scientific achievement, united states, university of michigan, US, yu xie

ANN ARBOR, Mich.— Globalization is a benefit to U.S. scientific achievement, not a threat. That’s the conclusion of a new book that weighs the evidence from a number of recent surveys to answer its title question: “Is American Science in Decline?”

American science is in good health, according to the book’s authors, sociologists Yu Xie of the University of Michigan and Alexandra Achen Killewald of Harvard University.

Although there are areas of concern, they maintain that traditional American values will help the nation maintain its strength in science for the foreseeable future, and that globalization will promote efficiency in science through knowledge sharing. (more…)

Crisis in Academic Publishing

By Guest PostJune 18, 2012Scienceacademic publishing, academic spring, author payer model, open access, open access journals, public funds

“In almost every country in the world, research is supported by public funds. When researchers publish their results in academic journals, they do so for free. The results are also reviewed by peers for free. And journals often require researchers to give up their rights to these articles. Then, major publishers or learned societies sell their journals at exorbitant prices to libraries… which are also financed by public funds! It’s a vicious circle in which taxpayers pay for the production and access to researchers while publishers and societies make profits of 30-45% before taxes. It’s outrageous!” exclaimed Jean-Claude Guédon. This professor of comparative literature at the Université de Montréal is far from being the only one to protest. In recent months, more than 11,000 researchers worldwide have expressed their dissatisfaction through a petition calling for a boycott of Elsevier. This academic publishing giant earned profits of more than US $1.1 billion in 2011. (more…)

First Commercial IBM Hot-Water Cooled Supercomputer to Consume 40% Less Energy

By Guest PostJune 18, 2012Science, Technologyartificial heart valve, computing infrastructure, europe fastest computer, german federal government, hot water cooling, supermuc, supermuc performance, Technology, zero emission

Leibniz’s “SuperMUC” named Europe’s fastest supercomputer

MUNICH – 18 Jun 2012: The Leibniz Supercomputing Centre (LRZ), in collaboration with IBM, today announced the world’s first commercially available hot-water cooled supercomputer, a powerful, high-performance system designed to help researchers and industrial institutions across Europe investigate and solve some of the world’s most daunting scientific challenges. (more…)

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