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Researchers Develop New, Less Expensive Nanolithography Technique

By Guest PostSeptember 3, 2012Scienceabsorb, albena ivanisevic, approach, biomedical application, chapel hill, humidity, marcus a kramer, micron, nanolithography, nanoscale, north Carolina, polymer, silicon strip, spore, state university, substrate surface, surface, technique, water

Researchers from North Carolina State University have developed a new nanolithography technique that is less expensive than other approaches and can be used to create technologies with biomedical applications.

“Among other things, this type of lithography can be used to manufacture chips for use in biological sensors that can identify target molecules, such as proteins or genetic material associated with specific medical conditions,” says Dr. Albena Ivanisevic, co-author of a paper describing the research. Ivanisevic is an associate professor of materials science and engineering at NC State and associate professor of the joint biomedical engineering program at NC State and the University of North Carolina at Chapel Hill. Nanolithography is a way of printing patterns at the nanoscale. (more…)

Analysis of Election Factors Points to Romney Win, University of Colorado Study Says

By Guest PostAugust 23, 2012Politicsanalysis, Barack Obama, colorado, democracy, democrat, Economy, election, electoral college, factor, florida, kenneth bickers, michael berry, minnesota, new hampshire, north Carolina, ohio, Pennsylvania, prediction model, republican, romney, trajectory, university of colorado, us president, virginia, White House, wisconsin

A University of Colorado analysis of state-by-state factors leading to the Electoral College selection of every U.S. president since 1980 forecasts that the 2012 winner will be Mitt Romney.

The key is the economy, say political science professors Kenneth Bickers of CU-Boulder and Michael Berry of CU Denver. Their prediction model stresses economic data from the 50 states and the District of Columbia, including both state and national unemployment figures as well as changes in real per capita income, among other factors.

“Based on our forecasting model, it becomes clear that the president is in electoral trouble,” said Bickers, also director of the CU in DC Internship Program. (more…)

Non-cancerous Brain Tumors Linked to Frequent Dental X-rays

By Guest PostApril 11, 2012Healthbrain tumor, california, central nervous system, connecticut, dental xrays, elizabeth claus, joellen schildkraut, joseph wiemels, lisa calvocoressi, margaret wrensch, massachusetts, melissa bondy, meninges, meningioma, motor control, non cancerous, north Carolina, panorex dental exam, texas, yale

People who received frequent dental X-rays in the past, before dosages were lowered, have an increased risk of developing a meningioma, the most common and potentially debilitating type of non-cancerous brain tumor, a new study led by the Yale School of Public Health has found. The study is published online in Cancer, a journal of the American Cancer Society.

Meningioma is listed as a rare disease by the National Institutes of Health. The estimated incidence is up to 8 out of 100,000 people, and it occurs more frequently among women than men. Although it is the most frequently diagnosed type of brain tumor, meningioma is listed as a rare disease by the National Institutes of Health. Tumors develop in a membrane that envelops the brain and the central nervous system known as the meninges. They can grow undetected for years and eventually reach the size of a baseball or larger. While they are not cancerous, they can cause debilitating side effects such as headaches, vision problems, and loss of speech and motor control. (more…)

Prehistoric Predators with Supersized Teeth Had Beefier Arm Bones

By Guest PostJanuary 4, 2012Sciencearm bones, barbourofelids, carnivores, catlike cousins, chicken and egg question, colossal canines, cross section, dimensions of the teeth, durham, environmental challenges, extinct cats, extinct predators, fangs, Julie Meachen, meat eaters, museum specimen, national science foundation, NESCent, nimravids, north Carolina, saber toothed cats, Saber toothed tigers, saran twombly, toothiest prehistoric predators

*Combination of colossal canines and forceful forelimbs arose repeatedly over time*

The toothiest prehistoric predators also had beefier arm bones, according to results of a study published today in the journal Paleobiology.

Saber-toothed tigers may come to mind, but these extinct cats weren’t the only animals with fearsome fangs.

Take the false saber-toothed cats–also known as nimravids–and their catlike cousins, a family of carnivores called the barbourofelids. (more…)

Deforestation Causes Cooling in northern U.S., Canada

By Guest PostNovember 24, 2011Environmentalbedo effect, atmosphere, carbon, climate monitoring strategies, cooling, david hollinger, deforestation, florida, forests, global warming, local climate, manitoba, minnesota, north Carolina, northern latitudes, open areas, reflection of sunlight, solar radiation, surface temperatures, turbulent, vegetation types, xuhui lee

Deforestation, considered by scientists to contribute significantly to global warming, has been shown by a Yale-led team to actually cool the local climate in northern latitudes, according to a paper published Nov. 17 in Nature.

“If you cut trees in the boreal region, north of 45 degrees latitude, you have a net cooling effect,” says Xuhui Lee, the study’s principal investigator and professor of meteorology at the Yale School of Forestry & Environmental Studies. “You release carbon into the atmosphere by cutting down trees, but you increase the albedo effect — the reflection of sunlight.” (more…)

Charges of Political Corruption Have Little Impact on Voter Opinion

By Guest PostOctober 31, 2010Politicscorruption strategy, effective electoral strategy, north Carolina, political corruption, political scandal, public opinion

Republican claims of political corruption in North Carolina’s Democratic Party have made little impact on public opinion among potential voters in the state, according to new polling data analyzed by North Carolina State University researchers. The findings show that highlighting actual corruption is not necessarily an effective electoral strategy. (more…)

Study of Death Penalty in North Carolina Shows That ‘Race Matters’

By Guest PostJuly 26, 20101 commentGeneral, Politicsboston, death sentences, fbi, glenn pierce, law review, michael radelet, north Carolina, northeastern university, professor, race matters, racial justice act, school of criminology and criminal justice, sociology, supplemental homicide reports, university of colorado at boulder, us supreme court

A new study examining death sentences in North Carolina over a 28-year period ending in 2007 shows that among similar homicides, the odds of a death sentence for those who are suspected of killing whites are approximately three times higher than the odds of a death sentence for those suspected of killing blacks.

(more…)

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