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Penn State


Deep magma matters in volcanic eruption cycle

A team of researchers found that magma is continuously supplied from deep in the crust but a valve acts below a shallower magma chamber, releasing lava to the surface periodically. The upper reservoir is open and the lower reservoir refills at half the rate it was lost during lulls in eruption.

SourcePenn State·JournalScience·DateOct 9, 2008

Researchers teach computers to search for photos based on their contents

A team of Penn State researchers has developed a new approach called Automatic Linguistic Indexing of Pictures in Real-Time (ALIPR) that enables computers to recognize the contents of photographs. The system uses statistical models to assign keywords to images based on pixel information, improving accuracy rates up to 90%.

SourcePenn State·JournalIEEE Transactions on Pattern Analysis and Machine Intelligence·DateOct 9, 2008

African-American blogs offer key health communications tool

A recent study found that African-American blogs provide a unique platform for discussing HIV and AIDS, allowing individuals to express themselves freely and anonymously. The researchers identified three key risk factors for the Black community: ineffective leadership, Black cultural practices, and individual behaviors.

SourcePenn State·JournalJournal of Computer-Mediated Communication·DateOct 2, 2008

Researchers study how pistachios may improve heart health

Researchers found that pistachio diets can beneficially affect cardiovascular disease risk factors in a dose-dependent manner. The study suggests that pistachios may decrease CVD risk profile through effects on Stearoyl CoA Desaturase (SCD) and other bioactive substances.

SourcePenn State·JournalAmerican Journal of Clinical Nutrition·DateSep 26, 2008

Coating copies microscopic biological surfaces

Penn State researchers have developed a method to rapidly and inexpensively copy biological surface structures using the conformal evaporated film by rotation (CEFR) technique. This technique enables the creation of coatings that capture the micro and nanostructure of biological surfaces, including metallic finishes and iridescent colors.

SourcePenn State·JournalApplied Physics Letters·DateSep 17, 2008

Army still using physicians in interrogation, bioethicist says

A Penn State bioethicist and Georgetown University law professor argue that the US Army continues to involve physicians in interrogations despite professional medical associations' adoption of restrictive policies. The Army's Behavioral Science Consultation Memo attempts to justify physician participation in interrogations.

SourcePenn State·JournalNew England Journal of Medicine·DateSep 10, 2008

Scientists develop new method to investigate origin of life

Researchers at Penn State have developed a computational method to trace evolutionary histories of proteins back to cells or viruses, aiming to settle the debate on which came first. The new approach uses phylogenetic profiles and tree-like diagrams to provide clearer insights into retroelement evolution.

SourcePenn State·JournalProceedings of the National Academy of Sciences·DateSep 2, 2008

Global warming greatest in past decade

Researchers confirm that surface temperatures in the Northern Hemisphere were warmer over the last 10 years than any time during the last 1300 years. The study uses a variety of proxy data, including tree rings, marine and lake sediment cores, ice cores, and coral cores, to derive a long-term temperature record.

SourcePenn State·JournalProceedings of the National Academy of Sciences·DateSep 1, 2008

Ceramic material revs up microwaving

Researchers have developed a ceramic material that heats up in the microwave without causing damage, allowing for faster cooking times. The material, made from petalite and magnetite, can retain heat for up to 15 minutes, enabling innovative food preparation methods.

SourcePenn State·JournalChemistry of Materials·DateAug 28, 2008

Novel fungus helps beetles to digest hard wood

A team of researchers discovered a novel fungus in the gut of Asian longhorned beetles that helps break down lignin, a protective barrier for plants. The fungus produces enzymes that enable the beetles to digest hard wood, leading to potential breakthroughs in pest control and biofuel production.

SourcePenn State·JournalProceedings of the National Academy of Sciences·DateAug 18, 2008

Pesticide build-up could lead to poor honey bee health

Researchers found unprecedented levels of fluvalinate and coumaphos in beeswax, while pollen and bees showed lower levels of other pesticides. A new method using gamma radiation reduced acaricide load in beeswax by 50%. The study highlights the need for monitoring pesticide interactions and potential links to Colony Collapse Disorder.

Testosterone key to disease transmission

Research suggests that increased testosterone in male mice increases their ability to transmit diseases, driving transmission through close social contact. The study found that treated mice made significantly more contacts with both males and females than untreated mice, leading to a higher risk of disease spread.

Compressor-free refrigerator may loom in the future

Researchers at Penn State have discovered a new way to cool using ferroelectric polymers that exhibit temperature changes under an electrical field. The technology could lead to the development of flat panel refrigerators without coils or compressors, providing a more energy-efficient and environmentally friendly cooling solution.

SourcePenn State·JournalScience·DateAug 7, 2008

World's smallest snake found in Barbados

The Leptotyphlops carlae is the world's smallest known snake species, with adults measuring just under four inches in length. This tiny threadsnake was discovered by Blair Hedges in a forest fragment on Barbados and is believed to be rare due to habitat destruction.

SourcePenn State·JournalZootaxa·DateAug 3, 2008

Piecing together an extinct lemur, large as a big baboon

Researchers have digitally reconstructed a nearly complete skull of the extinct lemur species Hadropithecus stenognathus, providing new insights into its diet and body size. The study reveals that the lemur was as large as a male baboon and had a brain size comparable to some large monkeys.

SourcePenn State·JournalProceedings of the National Academy of Sciences·DateJul 28, 2008

Microbes beneath sea floor genetically distinct

Researchers discovered that microbes beneath the sea floor are genetically distinct and dominate life's biomass, with a unique metabolism and slow growth rate. The study found that these microbes could survive major Earth impacts and potentially be a reservoir of novel genetic material.

SourcePenn State·JournalProceedings of the National Academy of Sciences·DateJul 21, 2008

Tethered molecules act as light-driven reversible nanoswitches

Researchers have developed a technique to attach light-sensitive organic molecules to metal surfaces, enabling reversible switching between two configurations in response to different wavelengths of light. This technology has potential applications in molecular motors, artificial muscles, and molecular electronics.

SourcePenn State·JournalNano Letters·DateJun 23, 2008

Woolly-mammoth gene study changes extinction theory

A large genetic study of the extinct woolly mammoth has revealed that it did not have much genetic diversity and was split into two groups. The discovery rules out human hunting as a contributing factor to its extinction, instead pointing to climate change and disease.

SourcePenn State·JournalProceedings of the National Academy of Sciences·DateJun 11, 2008

Study finds new properties in non-magnetic materials

A Penn State team has shown that non-magnetic materials can have more properties than previously thought, thanks to their unique structure and symmetry. The researchers found that certain non-magnetic materials can exhibit roto second harmonic generation, a property previously associated with magnetic materials.

SourcePenn State·JournalPhysical Review Letters·DateJun 11, 2008

Video games can make us creative if spark is right

Researchers discovered that video games can boost creativity when players are highly energized and in a positive mood. Conversely, low arousal and negative emotions lead to the highest levels of creativity. The study suggests harnessing emotional elements in games to spark creative thought and problem-solving skills.