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Penn State


Innovation linked to international exports for both rural and urban firms

A new study led by Penn State researchers found that innovative US firms are more likely to engage in international trade, with a strong association between innovation activities and export behavior. The study applied to both rural and urban companies, with findings that could inform efforts aimed at boosting US exports.

SourcePenn State·JournalEconomics Letters·TypeData/statistical analysis·DateApr 11, 2024

Disparities in sleep health and insomnia may begin at a young age

A study by Penn State researchers found that childhood-onset insomnia symptoms persist through young adulthood, with Black children being 2.6 times more likely to experience long-term sleep problems compared to white children. The findings highlight the need for early intervention and treatment to address this public health issue.

SourcePenn State·JournalSLEEP·TypeObservational study·DateApr 8, 2024

In the evolution of walking, the hip bone connected to the rib bones

A new reconstruction of the 375-million-year-old fossil fish Tiktaalik reveals that its ribs likely attached to its pelvis, enabling support of the body and potentially leading to the evolution of walking. This discovery provides insights into the major evolutionary transition from fish to four-limbed vertebrates.

SourcePenn State·JournalProceedings of the National Academy of Sciences·DateApr 5, 2024

New sunflower family tree reveals multiple origins of flower symmetry

A new analysis of the sunflower family tree shows that flower symmetry evolved multiple times independently among its members. The research, led by Penn State biologist Hong Ma, used low-coverage genome sequences to increase the number of species available for comparison and resolved more of the finer branches of the family tree.

SourcePenn State·JournalPlant Communications·TypeExperimental study·DateApr 3, 2024

An avocado a day may improve overall diet quality, researchers report

A team led by Kristina Petersen and Penny Kris-Etherton found that eating avocados daily significantly increased participants' adherence to dietary guidelines. The study suggested that using avocados as a substitute for refined grains and sodium may play a role in achieving improved diet quality.

SourcePenn State·JournalCurrent Developments in Nutrition·TypeRandomized controlled/clinical trial·DateMar 22, 2024

Satellite data assimilation improves forecasts of severe weather

A Penn State technique combining satellite data with existing computer weather forecast models produces more accurate forecasts of surface gusts in severe thunderstorms. This method can be especially useful in areas lacking ground-based weather monitoring infrastructure, such as radar systems.

SourcePenn State·JournalGeophysical Research Letters·TypeComputational simulation/modeling·DateMar 21, 2024

Two keys needed to crack three locks for better engineered blood vessels

Researchers have found two proteins, SOX17 and FGF2, that can efficiently mature stem cells into endothelial cells, forming tubular-like vessels. This breakthrough could enable the growth of lab-grown vascular tissue to support heart transplants and develop artificial blood brain barriers for neurological drug testing.

SourcePenn State·JournalStem Cell Reports·TypeExperimental study·DateMar 21, 2024

Backyard insect inspires invisibility devices, next gen tech

Researchers have precisely replicated the complex geometry of leafhopper particles, called brochosomes, which absorb visible and ultraviolet light. The unique design serves a dual purpose, reducing visibility to predators and scattering visible light for potential threats.

SourcePenn State·JournalProceedings of the National Academy of Sciences·TypeExperimental study·DateMar 18, 2024

Trauma screening may improve mental health service recommendations for children

A new study from Penn State finds that incorporating a trauma screening into child welfare evaluations leads to better identification of traumatic stress reactions and more appropriate service recommendations. The screening, developed by Christian Connell and Jason Lang, has been shown to increase referrals for specific trauma-focused ...

SourcePenn State·JournalJournal of Traumatic Stress·TypeData/statistical analysis·DateMar 11, 2024

Psychosocial stressors linked to higher inflammation in Black pregnant women

Research found that experiences of racial discrimination and perceived neighborhood racial composition are associated with higher levels of pro-inflammatory cytokines during pregnancy. Higher macrophage migration inhibitory factor (MIF) levels were linked to glucocorticoid resistance, a potential mechanism underlying preterm birth.

SourcePenn State·JournalBrain Behavior & Immunity - Health·TypeObservational study·DateMar 6, 2024

New role for bacterial enzyme in gut metabolism revealed

Researchers at Penn State have identified a bacterial enzyme, bile salt hydrolase, that produces new bile acid species in humans at birth, coinciding with the establishment of the gut microbiome. This discovery opens up new avenues for exploring the role of bile acids in human health and disease.

SourcePenn State·JournalNature·DateFeb 29, 2024

Cyber-physical heating system may protect apple blossoms in orchards

Researchers developed an autonomous heating system that uses real-time temperature and wind-direction data to warm fruit tree canopies. The system resulted in significantly reduced damage to apple tree buds in tests, with increased canopy protection times of over double and nearly triple in low temperatures.

SourcePenn State·JournalComputers and Electronics in Agriculture·TypeExperimental study·DateFeb 29, 2024

New structural insights could lead to mechanical enhancement in alloys

Researchers discovered that a new class of metallic materials with potential applications in aerospace and energy can withstand extreme temperatures and resist fractures thanks to their short-range order. The study revealed the interaction between short-range order and planar defects, which enhances the alloys' mechanical performance.

SourcePenn State·JournalNature Communications·TypeExperimental study·DateFeb 23, 2024

Common plant could help reduce food insecurity, researchers find

Researchers suggest Carolina azolla, a fast-growing aquatic fern, has the nutritional content to serve as a potentially vital food source after a catastrophe or disaster. The study found that cooking methods can significantly reduce polyphenolic content, making it digestible for humans.

SourcePenn State·JournalFood Science & Nutrition·TypeExperimental study·DateFeb 23, 2024

Black hole at center of the Milky Way resembles a football

A new study using NASA's Chandra X-ray Observatory and VLA data reveals that the supermassive black hole Sagittarius A* is spinning at about 60% of its maximum possible speed. This spin could provide an incredibly powerful kick to surrounding matter if the amount of material in the vicinity increases.

SourcePenn State·JournalMonthly Notices of the Royal Astronomical Society·TypeImaging analysis·DateFeb 21, 2024

Low voice pitch increases standing among strangers

A cross-cultural study found that lower voice pitch makes women and men sound more attractive for long-term relationships and more formidable among other men. Lower male voice pitch also confers formidability and high social status in societies with higher relational mobility, suggesting evolutionary origins.

SourcePenn State·JournalPsychological Science·DateFeb 8, 2024

Predicting neurodevelopmental disease in children from parent’s traits

Researchers found that parents' manifestation of neurodevelopmental and psychiatric traits can predict the prevalence and severity of disorders in children. The study analyzed 97,000 families and revealed a correlation between parental traits, suggesting that assortative mating may contribute to increased disease severity.

SourcePenn State·JournalAmerican Journal of Human Genetics·TypeData/statistical analysis·DateFeb 7, 2024