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Science News Archive 2019 - Page 101


Page 101 of 486

X marks the spot: recombination in structurally distinct chromosomes

Researchers discovered that different mechanisms govern chromosome interaction with the synaptonemal complex, particularly for sex chromosomes like X. The findings highlight the importance of structural features over primary amino acid sequences and suggest a chromosome-specific aspect to human meiotic defects.

SourceStowers Institute for Medical Research·JournalProceedings of the National Academy of Sciences·DateOct 16, 2019

First study to test healthy lifestyle changes in reducing the risk of dementia in a large-scale, diverse population in the United States

A new study at Rush University Medical Center aims to determine whether a combination of lifestyle changes can protect memory and thinking skills in people at risk of developing dementia. The two-year U.S. POINTER clinical trial will enroll 2,000 adults between 60-79 years old with no current memory problems or exercise habits.

The moon determines when migratory birds head south

Researchers found that European nightjars begin their autumn migration 10 days after the full moon and synchronize their flight to depart at the same time. The study reveals that moonlight affects the birds' activity patterns, enabling them to hunt more efficiently and replenish energy reserves.

SourceLund University·JournalPLOS Biology·DateOct 16, 2019

Family members' emotional attachment limits family firm growth

Research by Lancaster University finds that family-related considerations often trump a desire to grow among firms with multiple generations of the same family in senior roles. Non-active family members as major shareholders and non-family members on boards encourage growth, while active family members are more conservative and risk-av...

SourceLancaster University·JournalEuropean Management Review·DateOct 16, 2019

Ultrafast particle interactions could help make quantum information devices feasible

Researchers detected energy transfer from excited electrons to the crystal lattice on the femtosecond timescale, enabling the development of materials that retain energy for longer periods. This study contributes to the retardation of decoherence and the creation of quantum information devices such as optical switches.

How partisan hate leads people to believe falsehoods

A study by Ohio State University found that partisan media use is linked to stronger negative feelings and false beliefs about political opponents. Researchers surveyed Americans using various news outlets during the 2012 and 2016 presidential elections, discovering a correlation between increased hostility and belief in misperceptions.

SourceOhio State University·JournalJournal of Communication·DateOct 16, 2019

Human medicines affect fish behavior

Research reveals that human medicines influencing serotonin and dopamine systems alter the boldness and explorative behaviour of three-spined sticklebacks, highlighting potential consequences for aquatic ecosystems. The study confirms the role of these signal substances in individual personality differences and stress resilience.

SourceLinköping University·JournalJournal of Experimental Biology·DateOct 16, 2019

Pilot study shows even short-term 'vaping' causes inflammation in non-smokers

Researchers at Ohio State University Wexner Medical Center report a measurable increase in inflammation after four weeks of e-cig use without nicotine or flavors. The study suggests that even short-term usage can result in inflammatory changes at a cellular level, a concern as vaping usage is rapidly outpacing scientific understanding.

SourceOhio State University Wexner Medical Center·JournalCancer Prevention Research·DateOct 16, 2019

Study reveals how age affects perception of white LED light

Researchers found that age-dependent effects on color perception can lead to different perceptions of white LED lighting. Designs that consider these differences can improve the aesthetic appeal of LED lighting. The study suggests using modern colorimetry to minimize inter-user discrepancies in LED emitters.

SourceOptica·JournalOptics Express·DateOct 16, 2019

Pioneering cell therapies for non-responders to current immunotherapies

A new approach to identifying killer T lymphocytes in patients with gastrointestinal tumors has been developed, which can hone in on unique mutations expressed in cancer cells. This breakthrough could lead to the development of personalized and effective cell therapies for patients who do not respond to current immunotherapies.

SourceVall d'Hebron Institute of Oncology·JournalJournal of Clinical Investigation·DateOct 16, 2019

Investigating the full spectrum of suicide

A recent study published in Injury Prevention described a method for categorizing self-injury mortality, allowing closer examination of national trends in suicide and drug-related deaths. The study found that suicide is likely underreported for females due to less violent and less obvious methods.

SourceMcLean Hospital·JournalInjury Prevention·DateOct 15, 2019

New treatment combination could work against broader array of cancer cells, study finds

Researchers at University of Maryland School of Medicine identify new pathway to destroy cancer cells using PARP inhibitor and DNA methyltransferase inhibitor combination. The therapy has a synergistic effect when combined with radiation therapy, potentially expanding treatment options for non-small cell lung cancer patients.

SourceUniversity of Maryland School of Medicine·JournalProceedings of the National Academy of Sciences·DateOct 15, 2019