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Science News Archive August 2019 - Page 29


Page 29 of 38

Analysis and detoxification in one step

A Thai research team has created a novel approach for simultaneously detecting and detoxifying harmful phenol compounds in one step. The innovative technique leverages natural enzymatic reactions to convert toxic chemicals into luciferin, a bioluminescent compound produced by fireflies.

SourceWiley·JournalAngewandte Chemie International Edition·DateAug 8, 2019

Lassa virus' soft spot revealed

Researchers at La Jolla Institute for Immunology identified the molecular properties of antibodies that neutralize Lassa virus. By understanding these properties, they can create a map for rational vaccine design, aiming to develop effective treatments or vaccines against this deadly disease.

Reevaluating the impacts of smoke plumes aloft, based on the 2017 Pacific Northwest wildfires

Researchers compared observations with model simulations, revealing gaps in smoke plume rise and duration modeling. The study found that solar heating warmed air within the plume, causing it to self-loft to nearly 23 kilometers, but observed smoke lifetime was 40% shorter than calculated models due to photochemical loss of organic carbon.

Migration can promote or inhibit cooperation between individuals

A new analysis suggests that migration can promote cooperation among individuals by creating heterogeneous patterns in their spatial distribution. This allows populations to thrive despite the threat of exploitation, as defectors avoid cooperators or form communities with public goods.

SourcePLOS·JournalPLOS Computational Biology·DateAug 8, 2019

88% decline of big freshwater animals

The study found a significant decline in global freshwater megafauna populations, with large fish species like sturgeons and salmonids facing the highest threats. Conservation efforts have shown some success, but monitoring and protection remain inadequate for many species.

SourceForschungsverbund Berlin·JournalGlobal Change Biology·DateAug 8, 2019

These sharks use unique molecules to glow green

Researchers have identified a previously unknown family of small-molecule metabolites responsible for the bright green color in sharks' skin, which may also aid in identifying other sharks and fighting microbial infections. The discovery opens new questions about the potential functions of biofluorescence in shark biology.

SourceCell Press·JournaliScience·DateAug 8, 2019

Two-in-one contrast agent for medical imaging

A Belgian team developed a two-in-one contrast agent for medical imaging, combining MRI and photoacoustic imaging techniques. The bimodal probe enhances sensitivity while minimizing risks for patients.

SourceWiley·JournalEuropean Journal of Inorganic Chemistry·DateAug 8, 2019

Fluoride may diminish kidney and liver function in adolescents, study suggests

A recent study published by Mount Sinai researchers found that fluoride exposure may contribute to complex changes in kidney and liver function among youth in the US. The findings suggest that adolescents with poorer kidney or liver function may absorb more fluoride, highlighting potential health concerns.

SourceThe Mount Sinai Hospital / Mount Sinai School of Medicine·JournalEnvironment International·DateAug 8, 2019

Fighting child diarrhea

A simple, electricity-independent device has been proven effective in reducing child diarrhea rates by up to 23% in developing countries. The Aquatabs Flo technology uses precise chlorine dosing to purify water without compromising taste, offering a promising solution to control the second-leading cause of death for children globally.

SourceStanford University·JournalThe Lancet Global Health·DateAug 8, 2019

Control theory: Mother nature is an engineer

A University of Arizona research team discovered complex biochemical circuits in cells that follow control theory principles, controlling growth in response to nutrient availability. The study found that the TOR and PKA pathways work together like a thermostat, with one pathway speeding up response and the other maintaining stability.

SourceUniversity of Arizona·JournalNature Communications·DateAug 8, 2019

The reasons behind aerosol pollution over the eastern slope of the Tibetan Plateau

A combination of local emissions, transport from outside the region, and terrain-driven circulation contribute to high aerosol loading over the eastern slope of the Tibetan Plateau. The study highlights the need for understanding aerosol transport processes and physical mechanisms to mitigate environmental risks.

SourceInstitute of Atmospheric Physics, Chinese Academy of Sciences·JournalAdvances in Atmospheric Sciences·DateAug 8, 2019

Decoding touch

A study at Harvard Medical School's Blavatnik Institute has identified molecular aberrations causing heightened touch sensitivity in autism and points to a possible treatment. The research, conducted in mice, shows that an experimental compound mitigated abnormal touch sensitivity while improving body mass and alleviating anxiety.

SourceHarvard Medical School·JournalCell·DateAug 8, 2019

Leaping larvae! How do they do that without legs?

Researchers at Duke University discovered that gall midge larvae use a hydrostatic legless jumping mechanism, which allows them to launch themselves through the air with incredible speed and efficiency. This remarkable behavior is made possible by sticky patches of skin on the larva's body, similar to those found on geckos' feet.

SourceDuke University·JournalJournal of Experimental Biology·DateAug 8, 2019