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Science News Archive May 2018 - Page 40


Page 40 of 44

Early HIV treatment key to avoiding brain atrophy

A new study suggests that early HIV treatment can prevent brain atrophy and cognitive decline, emphasizing the importance of timely antiretroviral therapy. By analyzing MRI data from patients with early HIV infection, researchers found that cART treatment halted volume loss and cortical thinning in several brain regions.

SourceMcGill University·JournalClinical Infectious Diseases·DateMay 3, 2018

Study points to the futility of urine tests for salbutamol doping

A recent study published in British Journal of Clinical Pharmacology found that large variability in urine concentrations makes it impossible to determine an administered dose from a single untimed urine sample. This highlights the need to reconsider the use of urine tests for detecting salbutamol doping, as many violations will go unn...

SourceWiley·JournalBritish Journal of Clinical Pharmacology·DateMay 3, 2018

Untangling DNA knots

MIT researchers have discovered the factors that determine whether a DNA knot moves along the strand or jams in place. By manipulating the electric field strength, they can induce knots to move towards one end of the molecule, potentially enabling more accurate genome sequencing and knot removal methods.

SourceMassachusetts Institute of Technology·JournalPhysical Review Letters·DateMay 3, 2018

Revealing the remarkable nanostructure of human bone

The study reveals that bone's mineral crystals have a hierarchical structure integrated into the larger-scale skeleton, with 12 levels of hierarchy. The combination of mineral and protein forms continuous networks to provide strength essential for functional bones. This breakthrough builds on previous studies and sheds light on the uni...

SourceUniversity of York·JournalScience·DateMay 3, 2018

The ExACT tools for safe autonomy

HRL Laboratories joins DARPA's Assured Autonomy program with the Expressive Assurance Case Toolkit (ExACT) to ensure autonomous vehicle systems perform as programmed without unsafe behavior. The tool kit mathematically verifies algorithms lead to safe and reliable system behavior, considering physics and dynamics of the system.

Novel approach for photosynthetic production of carbon neutral biofuel from green algae

Scientists at the University of Turku have discovered an efficient way to transform solar energy into chemical hydrogen through photosynthesis of green algae, extending hydrogen production by several days. The new method shows that a major obstacle to efficient hydrogen production is not oxygen, but competition between metabolic pathways.

SourceUniversity of Turku·JournalEnergy & Environmental Science·DateMay 3, 2018

Mercury rising: Are the fish we eat toxic?

A study by Université de Montréal researchers found that 38% of countries' populations are exposed to methylmercury levels higher than safe for foetal development, with high-risk areas including the Maldives and South Korea. Industrial fishing has increased mercury exposure, especially in coastal and island nations.

SourceUniversity of Montreal·JournalScientific Reports·DateMay 3, 2018

Interconnected cells-in-a-dish let researchers study brain disease

Salk scientists develop a new way to study brain cell connections, revealing how communication is altered in people with schizophrenia. By creating multiple types of neurons from stem cells and observing their interactions, the team showed that CA3 pyramidal neurons form physical connections both to other CA3 neurons and to DG neurons.

SourceSalk Institute·JournalCell Stem Cell·DateMay 3, 2018

Women who eat fast food and little or no fruit take longer to become pregnant

A recent study published in Human Reproduction found that women who consume more fast food and less fruit take longer to become pregnant. The research, which analyzed data from over 5,500 women, suggests that a diet rich in fruits and low in fast food can improve fertility and reduce the time it takes to get pregnant.

Improving 3-D printing of plastic parts

Researchers developed structured core-shell polymer filaments to improve the strength of 3-D printed plastics. The new filaments have a polycarbonate core and an olefin ionomer shell, which self-reinforce the printed parts and make them more resistant to impacts.

SourceAmerican Chemical Society·JournalACS Applied Materials & Interfaces·DateMay 2, 2018

Blood pressure-regulating hormone may be a key marker of sociality in monkeys

Researchers found a potential biomarker for autism spectrum disorder (ASD) in monkeys with low social behavior, which had lower arginine vasopressin concentrations in their cerebrospinal fluid. This discovery suggests that AVP may be a target for developing new drugs to alleviate social impairment in ASD patients.

SourceAmerican Association for the Advancement of Science (AAAS)·JournalScience Translational Medicine·DateMay 2, 2018

Math sheds light on how living cells 'think'

Researchers have developed new mathematics to understand how proteins work together as an integrated network within cells, enabling them to adapt and reset themselves after exposure to a new stimulus. This finding has potential applications in various fields, including cancer therapies and understanding the human hormone system.

SourceQueensland University of Technology·JournalNature Communications·DateMay 2, 2018

River dolphins are declining steeply in the Amazon basin

Populations of freshwater dolphins in the Amazon basin are declining rapidly, with both boto and tucuxi species facing severe decline rates. The study reveals that these species would be classified as Critically Endangered under IUCN Red List criteria if current trends continue.

SourcePLOS·JournalPLOS ONE·DateMay 2, 2018

Cracking open the formation of fossil concretions

Researchers at Nagoya University developed a method to analyze concretions using L-shaped cross-plot diagrams, revealing that they grow quickly due to the presence of organic matter. The study found that concretions can preserve well-preserved fossils of soft tissues, which are rarely fossilized under other conditions.

SourceNagoya University·JournalScientific Reports·DateMay 2, 2018