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Science News Archive 2019 - Page 405


Page 405 of 486

Binding with consequences

Researchers discovered a mechanism by which bacteria like Burkholderia ambifaria activate white blood cells and attack the immune system. The study found that lectin BambL binds to carbohydrate residues on the surface of B cells, triggering an immune response in immunocompromised hosts.

SourceUniversity of Freiburg·JournalScience Signaling·DateMar 6, 2019

Eating healthy on a limited budget is possible

A new study published in the Journal of Nutrition Education and Behavior found that serving healthy meals to a family of four can be done for $25 per day, consistent with the USDA low-income cost of food meal plan. The study used menu planning and access to bulk supermarkets to achieve this cost.

SourceElsevier·JournalJournal of Nutrition Education and Behavior·DateMar 6, 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...