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Science News Archive October 2018 - Page 4


Page 4 of 47

Giant killers

A long-term study found that frequent disturbances outweigh severe ones in structuring kelp forest biodiversity. Annual disruptions led to a doubling of smaller plants and 30-61% fewer fish and shellfish, highlighting the importance of resilience over severity.

A new environment for repairing eyes

Researchers at the University of Houston have developed a new environment for repairing eyes using hyaluronic acid. By creating an ideal substrate layer with high concentrations of hyaluronic acid, they aim to improve the treatment of patients with limbal stem cell deficiency, which can lead to opaque corneas.

One month of abstinence from cannabis improves memory in adolescents, young adults

A study found that one month of abstinence from cannabis improved memory functions among adolescents and young adults, including the ability to learn and recall new information. Cognitive improvement occurred largely during the first week of abstinence, suggesting that abstaining from cannabis helps young people learn efficiently.

SourceMassachusetts General Hospital·JournalJournal of Clinical Psychiatry·DateOct 30, 2018

Droplet Digital PCR enables precise detection and quantification of a promoter mutation prevalent in many cancer types

A recent study published online demonstrated that Droplet Digital PCR technology can detect and quantify rare mutations in the TERT promoter region with high sensitivity. The assays detected the mutation in 78% of samples and yielded no false positives, showing its potential as a biomarker for diagnosing and monitoring patients.

SourceCG Life·JournalJournal of Molecular Diagnostics·DateOct 30, 2018

Advertising in mobile apps for young children -- Study raises concerns about frequency and content

A study found that nearly all smartphone and tablet apps targeted at toddlers and preschoolers have commercial content, using distracting features and potentially manipulative approaches. The research suggests that designers and app stores could take steps to develop higher-quality apps for children.

SourceWolters Kluwer Health·JournalJournal of Developmental & Behavioral Pediatrics·DateOct 30, 2018

Dopamine drives early addiction to heroin

Scientists have made a major advance in understanding how heroin addiction develops by studying the brain circuits that lead to its powerful addictive effects. The discovery of dopamine neurons' role in reinforcing heroin's effects could help refine addiction treatment and develop less addictive painkillers.

SourceeLife·DateOct 30, 2018

Tiny beetle trapped in amber might show how landmasses shifted

A new species of insect, Propiestus archaicus, found in Burmese amber is a relative of modern flat rove beetles that lived under tree bark. The beetle's flattened body and short legs suggest it was adapted to life in the Late Cretaceous era, helping scientists understand how continents shifted millions of years ago.

SourceField Museum·JournalJournal of Systematic Palaeontology·DateOct 30, 2018

Preventing sudden cardiac death with genome editing

Researchers at Baylor College of Medicine have successfully used genome editing to correct a genetic mutation causing a rare and deadly heart condition. The study uses CRISPR/Cas9 technology to selectively disrupt the disease-causing gene, reducing arrhythmia symptoms in mice. This breakthrough could lead to a permanent treatment for p...

SourceBaylor College of Medicine·JournalCirculation Research·DateOct 30, 2018

Balloon measurements reveal dust particle properties in free troposphere over desert

The study used balloon-borne measurements to investigate dust particles in the free troposphere over a Chinese desert region. The findings suggest that mineral particles from desert areas have a local influence and are transported long distances, with coarse-mode particles dominating the size distribution.

SourceInstitute of Atmospheric Physics, Chinese Academy of Sciences·JournalAtmospheric and Oceanic Science Letters·DateOct 30, 2018

How plants cope with stress

Researchers found that a specific mark on RNA molecules protects them from degradation under stressful conditions, enabling plants to more effectively respond to drought and salt stress. This mechanism could be manipulated to develop more resilient crop varieties.

SourceUniversity of Pennsylvania·JournalCell Reports·DateOct 30, 2018

Facial Asymmetry Increases with Age

A study published in Plastic and Reconstructive Surgery found that facial asymmetry increases steadily with aging, especially in the lower two-thirds of the face. Researchers used 3D photogrammetry to measure facial symmetry in 191 volunteers, ranging from four months to 88 years old.

SourceWolters Kluwer Health·JournalPlastic & Reconstructive Surgery·DateOct 30, 2018

High stability of the hepatitis B virus

The hepatitis B virus is highly stable at room temperature and can withstand temperatures of four degrees centigrade for nine months. Disinfectants are effective against the virus when applied undiluted, but their effectiveness decreases with dilution.

SourceRuhr-University Bochum·JournalThe Journal of Infectious Diseases·DateOct 30, 2018