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Science News Archive 2019 - Page 442


Page 442 of 486

Scientists develop metal-free photocatalyst to purify pathogen-rich water in minutes

Researchers from Yangzhou University and the Chinese Academy of Sciences create a metal-free photocatalyst that can purify pathogen-rich water in 30 minutes with over 99.9999% disinfection efficiency under visible light irradiation. The catalyst's high activity and low ecotoxicity make it a promising approach for global clean water sca...

Stalled fertility declines linked to disruptions in women's education in Africa

A new study found that disruptions in women's education in sub-Saharan Africa are partly responsible for the stall in declining fertility rates. The research used detailed data on over two million births and found that cohorts affected by educational discontinuities in the 1980s tend to have higher levels of fertility.

SourceInternational Institute for Applied Systems Analysis·JournalProceedings of the National Academy of Sciences·DateFeb 7, 2019

This is a neuron on nicotine

A team of scientists has developed a protein sensor that allows them to visualize where nicotine collects inside cells, revealing its effects on neural cells and the nature of nicotine addiction. The sensor, composed of a special protein, detects nicotine molecules and activates fluorescent proteins to glow brightly.

SourceCalifornia Institute of Technology·JournalJournal of General Physiology·DateFeb 7, 2019

Game behavior can give a hint about player gender

Game behavior can be analyzed to predict a person's personality features, including gender. Researchers used machine learning on large amounts of game data from the Steam gaming platform to make accurate predictions. The study shows that even limited information about gameplay and achievements can provide good predictive values.

67 percent of bankruptcy filers cite illness and medical bills as contributors to financial ruin

A study published in the American Journal of Public Health found that medical problems contributed to 66.5% of all bankruptcies, with 530,000 families affected annually. The study suggests that health insurance offers little protection to middle-class Americans and that private health insurance is a defective product.

SourcePhysicians for a National Health Program·JournalAmerican Journal of Public Health·DateFeb 7, 2019

All the data in the sky, alerted via UW eyes

The Zwicky Transient Facility has identified thousands of new objects in the night sky, including binary star systems and black holes. The facility's automated alert system has successfully generated over 1.2 million alerts each night, sharing data with survey partners who are experimenting with machine-learning classification systems.

SourceUniversity of Washington·JournalPublications of the Astronomical Society of the Pacific·DateFeb 7, 2019

Finding clues to a functional HIV cure

Scientists at George Mason University have identified a measurable indicator of cofilin dysfunction, a key protein regulating cell migration. This discovery may lead to new therapies to repair immune damages and potentially achieve a functional cure for HIV.

SourceGeorge Mason University·JournalScience Advances·DateFeb 7, 2019

Thirdhand smoke residue exposes children to chemicals

Researchers at Cincinnati Children's Hospital Medical Center and the University of Cincinnati found significant levels of nicotine on children's hands, even when caregivers did not smoke in their presence. The study suggests that indoor smoking bans may not fully protect children from exposure to tobacco smoke residue.

SourceUniversity of Cincinnati·JournalTobacco Use Insights·DateFeb 7, 2019

Do microplastics harm humans?

Researchers are unsure if microplastics cause harm to people as they accumulate in the body and organs, with varying effects depending on composition and additives. Microplastics have been identified in human feces, raising concerns about potential health risks.

SourceAmerican Chemical Society·JournalChemical & Engineering News·DateFeb 6, 2019

Study estimates misuse of prescribed opioids in the United States

A new study estimates that 3.9 million US adults misused prescription opioids annually, with risk factors including co-occurring substance use disorders and psychological distress. Prescribers should be vigilant about potential misuse among patients prescribed potent opioid medications for long-term use.

SourceWiley·JournalPharmacoepidemiology and Drug Safety·DateFeb 6, 2019

Simpler parts make for a more efficient system

Researchers at George Washington University found that decentralized systems perform better when individual parts are less capable, as overly smart components lead to overcorrections and mistakes. This discovery has potential applications in company structure, autonomous vehicles, AI algorithms, and even biological evolution.

SourceGeorge Washington University·JournalScience Advances·DateFeb 6, 2019

Bubbles of brand new stars

Researchers have spotted a massive young stellar object with a jet emitted by a fledgling star, shedding light on the early lives of stars. The observations were made possible by ESO's MUSE instrument, which has been improved by the addition of Adaptive Optics Facility.

SourceESO·JournalNature·DateFeb 6, 2019

An elegant mechanism

Mitochondrial researchers at the University of Freiburg discovered a critical role for the metabolite channel porin/VDAC in protein import into mitochondria. The study shows that porin/VDAC stimulates carrier protein import independently of its channel activity, forming an 'elegant mechanism' to regulate mitochondrial function.

SourceUniversity of Freiburg·JournalMolecular Cell·DateFeb 6, 2019

Certain characteristics linked with depression before and after giving birth

A study found associations between depression during pregnancy and postpartum periods with smoking, intimate partner violence, and pre-existing medical conditions like migraines or premenstrual syndrome. The findings suggest that different perinatal depression trajectories have distinct characteristics, paving the way for individualize...

SourceWiley·JournalJournal of Neuroscience Research·DateFeb 6, 2019

Atomic-scale simulation of antiarrhythmic drug interaction with cardiac cells

Researchers at UC Davis developed a novel simulation that provides insights into vital atomic-scale drug-cardiac cell interactions. The study advances the development of new antiarrhythmic drugs targeting voltage-gated sodium channels, which can help predict individual patient responses to drug therapy.

SourceUniversity of California - Davis Health·JournalProceedings of the National Academy of Sciences·DateFeb 6, 2019

Climate change poses greater risk of mental health challenges for children born to depressed mothers

A new study finds that climate change increases the risk of mental health problems in children born to mothers with prenatal depression who experience natural disaster-related stress. Infants of depressed mothers displayed greater distress and fear, less smiling and laughter, and lower soothability.

SourceAdvanced Science Research Center, GC/CUNY·JournalInfant Mental Health Journal Infancy and Early Childhood·DateFeb 6, 2019

What can worms tell us about human aging?

Researchers have developed a community-agreed model of worm metabolism, which has been re-optimised for relevance to metabolic changes during ageing. The model predicts that Oxaloacetate production becomes limiting in aged worms, potentially leading to extended lifespan by up to 20%.

SourceBabraham Institute·JournalFrontiers in Molecular Biosciences·DateFeb 6, 2019