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Science News Archive 2018 - Page 416


Page 416 of 473

Reshaping drug tests

Researchers at Tohoku University have created a novel approach to screen drugs for their potential impact on the heart by cultivating lipid membranes around tiny holes in silicon chips. The team found that lipid membranes attached better to tapered holes, enabling more efficient testing of drug effects on ion channels.

SourceTohoku University·JournalScientific Reports·DateFeb 19, 2018

How the insulin receptor works

Researchers from Helmholtz Munich successfully visualize insulin receptor activation for the first time, revealing a structural change that propagates across the plasma membrane to initiate signaling cascades. This breakthrough sheds new light on insulin's biological actions and has implications for understanding diabetes and cancer.

How companies can restore trust after CEO misconduct

A new study by Taylor & Francis Group found that boards of directors can increase public trust towards an organization by addressing CEO misconduct through proactive measures. Firing the CEO or keeping it in place while offering a genuine apology and acknowledgment of wrongdoing both increased trust, but in different ways.

SourceTaylor & Francis Group·JournalJournal of Trust Research·DateFeb 19, 2018

College roommates underestimate each other's distress, new psychology research shows

A new study from New York University found that college roommates tend to underestimate their roommate's level of distress, despite being able to detect certain changes over time. The researchers suggest that training roommates to recognize and respond to distress could lead to improved accuracy and support for college students.

SourceNew York University·JournalPersonality and Social Psychology Bulletin·DateFeb 19, 2018

Study identifies traces of indigenous 'Taíno' in present-day Caribbean populations

Researchers have identified genetic evidence of Taíno ancestry in contemporary Puerto Ricans and other Caribbean communities, providing unprecedented insights into the genetic makeup of the region. The study's findings support claims by indigenous descendant communities that their ancestors survived European colonization.

SourceSt. John's College, University of Cambridge·JournalProceedings of the National Academy of Sciences·DateFeb 19, 2018

Earthquakes follow wastewater disposal patterns in southern Kansas

A new report by the Seismological Society of America concludes that wastewater created during oil and gas production is the probable cause for a surge in earthquakes in southern Kansas. Between 2012 and 2016, six magnitude 4 or greater earthquakes occurred in the study area, with decreases in seismicity corresponding to decreases in di...

SourceSeismological Society of America·JournalBulletin of the Seismological Society of America·DateFeb 19, 2018

Declines of specific animal species in tropical forests affect lowland western Amazonian tree communities

A new study found that declines in specific Amazonian tree communities are linked to the loss of large vertebrate populations. The research, published in the Journal of Ecology, suggests that defaunation may not lead to massive biomass losses, but further on-the-ground research is needed to understand its long-term impact.

SourceSan Diego Zoo Wildlife Alliance·JournalJournal of Ecology·DateFeb 19, 2018

Robotic crystals that walk n' roll

Scientists at Waseda University have developed robotic crystals that walk slowly like an inchworm and roll 20,000 times faster than its walking speed. These autonomously moving crystals have great potential as material for soft robots in the medical field, particularly for microrobots that transport substances in the microscopic region.

SourceWaseda University·JournalNature Communications·DateFeb 19, 2018

New software helps detect adaptive genetic mutations

Researchers from Brown University have developed a new method, SWIF(r), to detect adaptive genetic mutations. The technique combines multiple statistical tests into a single machine-learning framework, allowing for more accurate identification of beneficial mutations and shedding light on the evolutionary history of populations.

SourceBrown University·JournalNature Communications·DateFeb 19, 2018

Electric eel-inspired device reaches 110 volts

Researchers developed an electric eel-inspired device that produced 110 volts from gels filled with varying strengths of salt water, leveraging ion gradients across hydrogels. The team hopes to increase the current and develop a power source for implantable devices utilizing existing human body ionic gradients.

Biodiversity loss raises risk of 'extinction cascades'

New research shows that biodiversity loss can lead to a domino effect of further extinctions, where the removal of one species creates a gap for other species to fill. This can result in simpler ecological communities at greater risk of extinction cascades with potential losses of many species.

SourceUniversity of Exeter·JournalProceedings of the National Academy of Sciences·DateFeb 19, 2018

How the brain responds to injustice

The study found that participants were more willing to punish a wrongdoer when they experienced injustice directly, associating with brain activity in the ventral striatum. Participants receiving oxytocin chose less intense punishments, suggesting the hormone's role in maintaining fairness.

Cracking the genetic code for complex traits in cattle

A global genomic study has identified genes that influence complex trait of height in cattle, confirming findings with miniature cattle and ancient DNA. The study's collaborative approach also reveals a high degree of overlap with human and dog genomes, opening up new possibilities for research on traits like temperament and body fatness.

SourceUniversity of Queensland·JournalNature Genetics·DateFeb 19, 2018

Hydroxychloroquine no more effective than placebo for relieving osteoarthritis hand pain

Researchers found hydroxychloroquine no more effective than placebo in relieving moderate to severe hand pain and radiographic osteoarthritis. The study's findings do not support the use of hydroxychloroquine as an alternative for patients with hand osteoarthritis, suggesting that tendon problems may be a major contributor to hand pain.

SourceAmerican College of Physicians·JournalAnnals of Internal Medicine·DateFeb 19, 2018

Continental interiors may not be as tectonically stable as geologists think

Researchers identified unexpected geophysical signals beneath stable continental interiors of South America and Africa, suggesting recent geologic activity. Cratons, ancient rocks on Earth's surface, may have experienced delamination, a process where the denser lower mantle layer peels away from the buoyant upper layer.

Spatial perception of odorants in cockroaches

Researchers from the University of Konstanz and Japan's Universities of Sapporo and Tokyo discovered a neural structure in cockroach brains that processes olfactory molecules with spatial information. This finding suggests that cockroaches can build an internal map of their olfactory landscape, similar to humans' sense of touch and sight.

SourceUniversity of Konstanz·JournalCurrent Biology·DateFeb 19, 2018

Fifteen new genes identified that shape our face

Researchers have identified 15 new genes that play a crucial role in shaping our facial features. The discovery was made using a novel approach that analyzed DNA data from large databases of faces. The findings could lead to breakthroughs in forensic analysis and reconstructive surgery, enabling doctors to use DNA to recreate lost faces.

SourceKU Leuven·JournalNature Genetics·DateFeb 19, 2018

Study: Involving the public in water policies is key to successful municipal water systems

A Portland State University study published in Water Resources Research found that involving residents in local water policies is key to building healthy and resilient city water systems. The research bridged the gap between residents' concerns about costs and water shortages and water managers' concerns about aging infrastructure, res...

SourcePortland State University·JournalWater Resources Research·DateFeb 19, 2018

Insulin goes viral

Researchers at Joslin Diabetes Center discovered that four viruses can produce insulin-like hormones that bind to human insulin receptors and stimulate cellular signaling. This finding opens up a new field of study in microbial endocrinology, potentially revealing biological mechanisms behind diabetes, autoimmune disease, and cancer.

SourceJoslin Diabetes Center·JournalProceedings of the National Academy of Sciences·DateFeb 19, 2018

Flexible warped nanographene developed for bioimaging

Researchers have developed a water-soluble warped nanographene molecule that induces cell death when exposed to blue laser light, showing promise for fluorescent cell imaging and possibly eradication of cancer cells. The molecule exhibits green fluorescence under ultraviolet or blue light and has low cytotoxicity.

SourceInstitute of Transformative Bio-Molecules (ITbM), Nagoya University·JournalAngewandte Chemie International Edition·DateFeb 19, 2018