Add BrightSurf on Google Email

Science News Archive May 2019 - Page 8


Page 8 of 42

More fishing vessels chasing fewer fish, new study finds

A new study found that despite increased technology and motorization, modern fishing vessels take only one fifth of the catch per unit of effort compared to the 1950s. This reflects growing pressure on marine resources and a fall in fish abundance, with Asia's fishing fleet expansion outpacing fish stocks' capacity.

SourceUniversity of Tasmania·JournalProceedings of the National Academy of Sciences·DateMay 27, 2019

A forest 'glow' reveals awakening from hibernation

Researchers linked seasonal photosynthesis cycles to solar-induced fluorescence in evergreen forests, enabling large-scale monitoring of carbon dioxide uptake. The study found that fluctuations in photoprotective pigments affect both photosynthesis and fluorescence, providing a proxy for forest activity.

SourceUniversity of Utah·JournalProceedings of the National Academy of Sciences·DateMay 27, 2019

Antibiotic ornament clasp

Lugdunin, a cyclic peptide with strong antimicrobial properties, works by proton transport across bacterial membranes. The researchers discovered that the thiazolidine group in lugdunin forms a critical part of its structure and is essential for its antibacterial activity.

SourceWiley·JournalAngewandte Chemie International Edition·DateMay 27, 2019

Diagnosis of coronary artery disease improved by deep learning analysis of SPECT MPI

A multicenter study found that deep learning analysis of single photon emission computed tomography (SPECT) myocardial perfusion imaging (MPI) improved the diagnosis of obstructive coronary artery disease. The new method showed increased sensitivity and accuracy compared to traditional methods, leading to better patient outcomes.

SourceSociety of Nuclear Medicine and Molecular Imaging·JournalJournal of Nuclear Medicine·DateMay 27, 2019

Microglia turned on

Researchers have developed a microglia-selective fluorogenic probe that triggers fluorescence through gene expression, enabling selective labeling and imaging of microglia cells in live brain tissue. This probe has the potential to detect developing neural diseases such as Alzheimer's disease and stroke.

SourceWiley·JournalAngewandte Chemie International Edition·DateMay 27, 2019

Thirty years after anorexia onset, fewer ill than healthy

A study of 102 participants, including those with anorexia and healthy controls, found that 30 years later, the majority were healthy but some had persistent eating disorders. The study identified age as a factor in recovery prospects, with teenagers who started anorexia at a slightly older age having better health outcomes.

SourceUniversity of Gothenburg·JournalThe British Journal of Psychiatry·DateMay 27, 2019

First-of-its-kind study in endothelial stem cells finds exposure to flavored e-cigarette liquids, e-cigarette use exacerbates cell dysfunction

A new study found that exposure to flavored e-cigarette liquids and e-cigarette use exacerbate endothelial cell dysfunction, a key risk factor for heart disease. The researchers observed pro-inflammatory markers and toxic effects on cells from various e-liquids.

SourceAmerican College of Cardiology·JournalJournal of the American College of Cardiology·DateMay 27, 2019

Fighting academic failures

Supporting socially vulnerable students is key to preventing academic failures. International studies have shown that family context impacts a child's school progress, but strict predetermination is not inevitable. Experts suggest measures such as subsidies, monitoring, and targeted support like special tutors, personalized curricula, ...

SourceNational Research University Higher School of Economics·JournalJournal of Modern Foreign Psychology·DateMay 27, 2019

Crabs' camouflage tricks revealed

Researchers found that shore crabs from mudflats closely match the appearance of the mud they live on, while those in rock pools rely on high-contrast patterns to break up their outline. This study contributes to understanding why shore crabs are so diverse.

SourceUniversity of Exeter·JournalScientific Reports·DateMay 24, 2019