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Penn State


Four synchronized planets reveal clues to how planets form

The Kepler-223 planetary system has unusually long-term stability due to gravitational interactions between its four planets, which return to the same positions relative to each other and their host star. Numerical simulations suggest that slow migration during formation could have placed these planets into their balanced configuration.

SourcePenn State·JournalNature·DateMay 12, 2016

In a connected world, privacy becomes a group effort

A study by Penn State researchers reveals that social media users act autonomously on some privacy issues but become interdependent when information is co-owned by multiple users. Participants relied on strategies like group discussions and private groups to manage privacy rights for group content.

Deep male voices not so much sexy as intimidating

Research found that deep-pitched male voices are seen as dominant by other males but have a smaller impact on attracting females. Human male traits imply physical aggression and formidability, providing competitive advantages in fighting or threatening other men more than they help attract women.

Type 2 diabetes drug trials unnecessarily exclude women

Research reveals that type 2 diabetes drug trials frequently exclude women who are pregnant, breastfeeding, or may become pregnant without clear justification. The criteria most often excluded women who were currently pregnant or breastfeeding, but more than 50 studies excluded all women of childbearing potential.

SourcePenn State·JournalDiabetes Care·DateMay 5, 2016

Personal cooling units on the horizon

Researchers at Penn State have developed a nanowire array that can cool about 5.5 degrees Fahrenheit using 36 volts, an electric field level safe for humans. The material is flexible, can be powered by a 500g battery pack for two hours, and could potentially be incorporated into firefighting gear or athletic uniforms.

SourcePenn State·JournalAdvanced Materials·DateApr 28, 2016

Land grant university programs helped keep farmers on the farm

The cooperative extension program has been instrumental in keeping farmers on the farm, with the federal program helping to retain over 137,000 agricultural businesses. By leveraging research from land grant universities, the program provides education and learning opportunities to farmers and citizens alike.

SourcePenn State·JournalApplied Economic Perspectives and Policy·DateApr 20, 2016

Strength training helps older adults live longer

A large analysis found that older adults who met strength-training guidelines had significantly lower mortality rates, even when controlling for demographic variables and health behaviors. The study suggests that strength training is beneficial beyond improving muscle strength and physical function.

SourcePenn State·JournalPreventive Medicine·DateApr 20, 2016

Researchers find new clue in lupus autoantibody production

Researchers at Penn State College of Medicine have discovered a potential target for treating lupus: interferon gamma. The cytokine stimulates immune cells and is involved in the formation of autoreactive B cells that produce autoantibodies, leading to inflammation and tissue damage.

SourcePenn State·JournalJournal of Experimental Medicine·DateApr 12, 2016

Researchers reproduce mechanism of slow earthquakes

Researchers successfully replicated a range of fault slip modes found during earthquakes, quiet periods and slow earthquakes. They used ground quartz and a machine to apply pressure and alter stresses, revealing the forces behind slow earthquake mechanisms.

SourcePenn State·JournalNature Communications·DateMar 31, 2016

Sea-level rise from Antarctic ice sheet could double

A new ice sheet model suggests that Antarctic ice sheet melting could lead to a 50-foot rise in sea level by 2500, potentially doubling previous estimates. The researchers attribute this to ocean warming and the fracturing of floating ice shelves, which would cause them to collapse into the sea.

SourcePenn State·JournalNature·DateMar 30, 2016

Research on risky sexual behaviors is lacking

A recent study identifies multiple sexual behaviors associated with prevalent sexually transmitted infections, including HIV. Men who engaged in anal stimulation or enema use were nearly five times as likely to test positive for HIV as those who did not.

SourcePenn State·JournalThe Journal of Sexual Medicine·DateMar 29, 2016

Expectation may be essential to memory formation

Researchers propose expectancy-based binding theory, which suggests that subjects remember features without necessarily attaching them to the target object. This contradicts traditional theories of object-based and feature-based encoding., Attention alone is not enough for accurate memory recall, according to the study.

SourcePenn State·JournalCognition·DateMar 28, 2016

Keep an eye on children's calories, researchers say

A new study suggests that caregivers can lower children's meal calories by choosing lower-calorie products and strategic portion sizes. By serving larger portions of lower-calorie foods with smaller portions of higher-calorie foods, children's overall caloric intake can be substantially reduced.

SourcePenn State·JournalPhysiology & Behavior·DateMar 17, 2016

Keeping ribosomes stuck may stop virulent bacteria strain in its track

Researchers developed compound inhibitors that target ribosomes in the translation phase of a virulent bacteria's genetic process. These compounds halt the bacterial rescue operation, making it difficult for the bacteria to grow and proliferate. The study's findings offer new hope against biowarfare agents and resistant pathogens.

SourcePenn State·JournalAntimicrobial Agents and Chemotherapy·DateMar 16, 2016

Some assembly required to boost robot ratings

Researchers found that participants who assembled their own robots experienced a higher sense of accomplishment and ownership. However, those who faced difficulties during assembly lowered their ratings. The study suggests that manufacturers should balance positive and negative aspects of self-assembly when designing robots.

Green tea and iron, bad combination

A new study published in the American Journal of Pathology suggests that green tea's antioxidant properties may be compromised when consumed with iron-rich foods or supplements. The researchers found that the main compound in green tea, EGCG, loses its ability to inhibit pro-inflammatory enzymes when bound to iron.

SourcePenn State·JournalAmerican Journal Of Pathology·DateMar 8, 2016

Leaf mysteries revealed through the computer's eye

A computer program developed by researchers can categorize leaves into large evolutionary categories, leading to improved fossil identification and a better understanding of flowering plant evolution. The method achieves a 72% accuracy rate over 19 leaf families compared to random chance.

SourcePenn State·JournalProceedings of the National Academy of Sciences·DateMar 7, 2016

New trigger for self-powered mechanical movement

A team of researchers at Penn State University and the University of Pittsburgh has developed a new way to use enzyme reactions to trigger self-powered mechanical movement. The enzyme pumps can precisely control flow rate without an external power source and turn on in response to specific chemicals in solution.

SourcePenn State·JournalProceedings of the National Academy of Sciences·DateFeb 25, 2016

Let it go: Reaction to stress more important than its frequency

A study by Penn State and Columbia University found that individuals who experience more negative emotions and perceive stressful events as more stressful have lower heart rate variability, a risk factor for cardiovascular disease. This suggests that reaction to stress is more important than its frequency in determining health risks.

SourcePenn State·JournalPsychosomatic Medicine·DateFeb 25, 2016