Add BrightSurf on Google Email

Science News for March 5, 2019


Weather-responsive intersections could ease traffic congestion

Researchers at the University of Waterloo found that adjusting traffic light timing in response to weather conditions can significantly reduce intersection delays. By analyzing video data and running computer simulations, they determined that weather-responsive signal plans could ease congestion and improve safety during snowstorms.

SourceUniversity of Waterloo·JournalJournal of Traffic and Transportation Engineering·DateMar 5, 2019

Rethinking old-growth forests using lichens as an indicator of conservation value

Researchers propose using lichens to assess old-growth forest conservation value, offering a more nuanced approach to measuring biodiversity. This method, developed by Dr. Troy McMullin and Dr. Yolanda Wiersma, uses suites of lichen species associated with old-growth areas to develop an index of ecological continuity.

SourceCanadian Museum of Nature·JournalFrontiers in Ecology and the Environment·DateMar 5, 2019

Study shows success of measles vaccine campaigns in India

A mass measles vaccination campaign in India saved an estimated 41,000 to 56,000 children's lives between 2010 and 2013, according to a study published in eLife. The campaigns significantly reduced child mortality rates in the affected districts, with mortality rates falling by 27% compared to non-campaign states.

SourceeLife·DateMar 5, 2019

BU conducts first experimental evaluation of pharmaceutical industry-led access program

A new study by Boston University School of Public Health evaluates the Novartis Access program in Kenya, demonstrating that robust, 'gold standard' methods can be used to assess major pharmaceutical companies' access programs. The study found that the program significantly increased availability of two medicines in health facilities bu...

SourceBoston University School of Medicine·JournalThe Lancet Global Health·DateMar 5, 2019

Nanoparticles help realize 'spintronic' devices

Researchers have demonstrated a new way to perform functions essential to future computation at speeds trillions of times faster than current commercial devices. The team created a nanoscale spintronic semiconductor device that can partially switch between specific magnetic states in under a picosecond.

SourceUniversity of Tokyo·JournalApplied Physics Letters·DateMar 5, 2019

Capturing bacteria that eat and breathe electricity

Researchers at Washington State University captured heat-loving bacteria that can 'eat' pollution by converting toxic pollutants into less harmful substances and generating electricity. The discovery was made possible by a cheap portable potentiostat invented by graduate student Abdelrhman Mohamed, who worked with Professor Haluk Beyenal.

SourceWashington State University·JournalJournal of Power Sources·DateMar 5, 2019

Nitric acid and ammonia electrosynthesis

Researchers at Tianjin University have developed an alternative strategy for synthesizing nitric acid and ammonia through electrochemical reactions using air and waste nitrate combined electrocatalytic process. This approach offers a more energy-efficient and environmentally friendly method compared to traditional industrial processes.

SourceScience China Press·JournalNational Science Review·DateMar 5, 2019

Location and competition

A UC Santa Barbara study reveals that proximity to highly trafficked areas, shopping centers, and freeways leads to higher gas prices. The researchers also found that market competition can override the effect of location, with nearby gas stations influencing pricing behavior.

SourceUniversity of California - Santa Barbara·JournalAsia-Pacific Journal of Regional Science·DateMar 5, 2019

HIV remission achieved in second patient

A second person has experienced sustained remission from HIV-1 after ceasing treatment through a stem cell transplant. The patient remained undetectable after stopping antiretroviral therapy (ARV) and his immune cells continue to lack the CCR5 receptor, making it difficult for the virus to enter host cells.

SourceUniversity College London·JournalNature·DateMar 5, 2019

Sacrificing accuracy to see the big picture

Researchers at the University of Pennsylvania propose that humans' ability to detect patterns stems from the brain's desire for simplicity. By prioritizing overall structure over individual details, people can more quickly recognize complex patterns and anticipate what comes next. The study's findings have significant implications for ...

New Regenstrief studies report drug focused approach insufficient to manage ICU delirium

Recent clinical trials conducted by the Regenstrief Institute found that traditional drug-focused approaches are ineffective in managing delirium in ICU patients. Implementing deprescribing strategies and exploring alternative methods, such as waking and mobilization, may be more effective in reducing delirium severity and duration.

SourceRegenstrief Institute·JournalJournal of the American Geriatrics Society·DateMar 5, 2019

Giving a voice to society's maintainers

Researchers Lee Vinsel and Andrew Russell aim to improve the lives of maintenance professionals through a global network and recognition. They received a $189,193 grant from the Alfred Sloan Foundation to connect leaders with maintainers in various industries.

Menstrual cycle phase influences cocaine craving

A new study reveals that the menstrual cycle phase may contribute to differences between men and women in cocaine seeking and vulnerability to relapse after quitting. Female rats exhibited stronger cravings for cocaine during estrus, a phase associated with ovulation, compared to non-estrus.

SourceElsevier·JournalBiological Psychiatry·DateMar 5, 2019

Results of ABATE infection trial published

The ABATE Infection Trial found that daily antiseptic bathing with nasal ointment reduced hospital-acquired bloodstream infections by 30% in patients with central venous catheters, a high-risk group. This intervention also decreased antibiotic-resistant organisms, including MRSA and vancomycin-resistant enterococcus, in this patient po...

Genetic 'usual suspects' identified in researchers' new list

Scientists at Cold Spring Harbor Laboratory have created a ranked list of genes that are likely to be involved in any disease, allowing researchers to distinguish between these 'usual suspects' and those unique to specific conditions. The study's findings provide valuable context for interpreting gene activity in disease onset.

SourceCold Spring Harbor Laboratory·JournalProceedings of the National Academy of Sciences·DateMar 5, 2019

Distracted drivers 29 times more likely to wreck in a highway work zone

Researchers at the University of Missouri found that drivers who are distracted while driving in a highway work zone are 29 times more likely to be involved in a collision or near-miss. The study analyzed data from over 3,000 drivers and provides recommendations for behavioral countermeasures to reduce injuries and fatalities.

SourceUniversity of Missouri-Columbia·JournalTransportation Research Record Journal of the Transportation Research Board·DateMar 5, 2019

Attitudes about health affect how older adults engage with negative health news

A study by North Carolina State University found that older adults are more willing to engage with negative health information when they have a positive attitude towards their health. Participants who completed a checklist designed to make them feel good about their lifestyle choices read more than 50% of the negative articles, compare...

SourceNorth Carolina State University·JournalPsychology and Aging·DateMar 5, 2019

Spin devices rev up

Researchers from University of Tokyo discover magnetic spin Hall effect in non-collinear antiferromagnet Mn3Sn, enabling efficient spin current transfer. This could lead to high-speed and high-capacity devices with improved power efficiency.

SourceUniversity of Tokyo·JournalNature·DateMar 5, 2019

A step closer to an HIV cure

Researchers have found no rebound of HIV in two patients who stopped taking their medication after receiving stem cell transplants, providing crucial insights into the potential mechanisms of cure. The transplanted donor cells had a gene defect that made it difficult for HIV to infect cells, offering new hope for developing a cure.

Matrix could ensure vital copper supplies

Researchers have identified a matrix of 12 risk categories that consider environmental, social, governance and mineralogical factors affecting the viability and accessibility of complex copper orebodies. The study found that 75% of undeveloped copper orebodies face environmental, social and governance challenges.

SourceUniversity of Queensland·JournalJournal of Cleaner Production·DateMar 5, 2019

A silver lining like no other

New technology from the University of South Australia uses silver-loaded microneedle patches to create a 24-hour bacteria-free zone around the injection site, reducing infection risk. The dissolvable feature ensures no reuse and eliminates one of the greatest causes of infection.

SourceUniversity of South Australia·JournalChemical Communications·DateMar 5, 2019

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