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Science News Archive March 2019 - Page 39


Page 39 of 43

Looks matter when it comes to success in STEM, study shows

A Rice University study reveals that students who look more racially stereotypical are more likely to persist in STEM fields, while those who do not fit the mold face higher drop-out rates. Asian students who look more like their racial group are more likely to complete a STEM degree, but black students who do so are less likely.

SourceRice University·JournalJournal of Personality and Social Psychology·DateMar 5, 2019

Life-threatening birth complication rate increasing across US racial, ethnic groups

A recent NIH-funded analysis of California hospital records found a significant increase in severe maternal morbidity among US women from diverse racial and ethnic backgrounds. The study revealed substantial disparities in life-threatening birth complications, with non-Hispanic black women facing the highest rates.

Mom-to-mom phone calls lift breastfeeding rate

An Australian study found that regular telephone support from experienced breastfeeders increased breastfeeding rates among first-time mothers by 75%, compared to 69% in the control group. The program also improved mothers' ability to cope with challenges, leading to a significant increase in exclusive breastfeeding at six months.

SourceLa Trobe University·JournalEClinicalMedicine·DateMar 5, 2019

Electrical signals kick off flatworm regeneration

Scientists have discovered that electrical activity is the first known step in planarian flatworm regeneration, starting before genetic machinery kicks in. This breakthrough enables cells to communicate and make decisions about their position and overall organ structure.

SourceCell Press·JournalBiophysical Journal·DateMar 5, 2019

When changing one atom makes molecules better

Researchers have found a way to replace hydrogen atoms with fluorine in organic molecules, increasing their metabolic stability and potentially leading to more effective pharmaceuticals. This breakthrough could lead to the development of new treatments for various diseases.

SourceUniversity of Vienna·JournalNature Chemistry·DateMar 5, 2019

Study confirms and quantifies Zika-microcephaly link in Brazil

A study published in PLOS Medicine has confirmed and quantified the association between Zika virus infection during pregnancy and microcephaly in Brazil. The research found that women infected with Zika virus early in pregnancy were almost 17 times more likely to have a child with microcephaly.

SourcePLOS·JournalPLOS Medicine·DateMar 5, 2019

Plasma protein may hold promise for wound scaffolds

A team of researchers from Germany has successfully developed a new method for creating wound-healing tissue scaffolds using plasma protein. The scaffold can be attached or detached from a surface and retains the properties of the protein, making it suitable for various biomedical applications such as blood coagulation and drug screening.

SourceIOP Publishing·JournalBiofabrication·DateMar 4, 2019

Using sleep disorder to predict Parkinson's disease

A large multi-centre study of over 1,200 patients with REM sleep behaviour disorder found a high risk of Parkinson's disease progression and identified several strong predictors, including motor difficulties and mild cognitive impairment. The study's findings will improve clinical trial selection and therapy development.

SourceMcGill University·JournalBrain·DateMar 4, 2019

The random anti-laser

Researchers have developed a method to build an anti-laser based on random scattering, which can absorb light of a specific color and dissipate energy. The new approach has been confirmed by experiments in cooperation with the University of Nice and opens up possibilities for various scientific and engineering applications.

Cocoa may help curb fatigue typically associated with multiple sclerosis (MS)

Researchers found that high flavonoid cocoa powder improved fatigue in people with multiple sclerosis by reducing mental and physical fatigue. Participants who drank the high flavonoid version showed a moderate effect on fatigability and improvements in pain symptoms, while those drinking low flavonoid cocoa saw no significant benefits.

SourceBMJ Group·JournalJournal of Neurology Neurosurgery & Psychiatry·DateMar 4, 2019

Researchers uncover new facets of HIV's 'arms race' with human defense system

A new study reveals the crucial role of a protein called Nef in allowing HIV to thrive within human cells despite the immune system's efforts to combat it. The research team showed that Nef antagonizes another protein called TIM, effectively reducing its power to protect human cells and making it easier for the HIV virus to release.

SourceOhio State University·JournalProceedings of the National Academy of Sciences·DateMar 4, 2019

Honey bee-inspired drug patches

Microfabricated surfaces with hair-like micropillars can entrap particles at five times the density of commercial patches, enabling higher drug contents and potential biomedical applications. The technology could also be used for industrial purposes, building on the unique properties of honey bee legs.

SourceProceedings of the National Academy of Sciences·JournalProceedings of the National Academy of Sciences·DateMar 4, 2019