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Science News Archive 2020 - Page 101


Page 101 of 512

Study finds lowering nicotine decreases addictiveness of smoking in vulnerable populations

A study published in JAMA Network Open found that reducing nicotine levels in cigarettes decreases addictiveness, particularly among those with mental illness and socioeconomic disadvantage. The research suggests that lower nicotine content could lead to policy changes benefiting all smokers, especially the most vulnerable.

Most psoriasis patients taking drugs that affect the immune system survive COVID-19

A global registry of psoriasis and COVID-19 patients found that over 90% of patients taking immune system drugs survived the pandemic. The risk factors for severe outcomes were similar to those in the general population, with older, male patients and those with certain health conditions being more likely to require hospital admission.

SourceNational Institute for Health Research·JournalJournal of Allergy and Clinical Immunology·DateOct 20, 2020

Safety considerations for visiting primary care doctors

Primary care doctors are taking safety measures to protect patients, including appointment-only offices, clear protocols posted online or over the phone, and staggered in-person visits. Patients can also take precautions such as calling labs before scheduling appointments and wearing masks during visits.

SourceRutgers University·JournalJournal of Public Health Management and Practice·DateOct 20, 2020

Criteria to predict cytokine storm in COVID-19 patients identified by Temple Researchers

Temple researchers developed and validated predictive criteria to identify COVID-19 patients at risk of developing a cytokine storm, which can lead to life-threatening organ damage. The six criteria relate to inflammation, cell death, tissue damage, and electrolyte imbalance, and were validated in two cohorts of patients.

SourceTemple University Health System·JournalAnnals of the Rheumatic Diseases·DateOct 19, 2020

Gut bacteria in multiple sclerosis: Probiotic or commensal, good or bad?

A study published in Proceedings of the National Academy of Sciences found that Lactobacillus reuteri, a commonly used probiotic, can exacerbate multiple sclerosis in mouse models. The research suggests that gut microbiome balance is crucial in chronic diseases and that a one-size-fits-all approach to treatment may not be effective.

SourceUniversity of Vermont·JournalProceedings of the National Academy of Sciences·DateOct 19, 2020

Natural killer cells also have a memory function

Researchers found that one third of human liver NK cells can remember viruses and respond specifically to them, making them an interesting target for prophylactic use in the fight against infections. This subset of NK cells exhibits a unique gene expression profile and could be used for specific vaccination strategies.

SourceMedical University of Vienna·JournalScience Immunology·DateOct 19, 2020

Mouthwashes, oral rinses may inactivate human coronaviruses

Researchers found that several nasal and oral rinses had a strong ability to neutralize human coronavirus, suggesting these products could reduce virus spread by COVID-19-positive individuals. The 1% baby shampoo solution inactivated over 99.9% of the virus after a two-minute contact time.

SourcePenn State·JournalJournal of Medical Virology·DateOct 19, 2020

NUS study reveals severe air pollution drives food delivery consumption and plastic waste

A NUS study found that poor outdoor air quality in China drives consumers to use food delivery services, resulting in increased plastic waste from packaging. The study revealed a strong causal link between air pollution and plastic waste, with a 100 μg/m³ increase in PM2.5 levels raising food delivery consumption by 7.2%.

SourceNational University of Singapore·JournalNature Human Behaviour·DateOct 19, 2020

Fighting fire with data

A University of Pittsburgh professor is utilizing optimization techniques to find effective solutions for mitigating forest fires. The project aims to predict when and where fuel treatment methods should be implemented to best control wildfires.

Frère Jacques, are you sleeping?

A study published in Nature Human Behaviour found that American infants relaxed when played unfamiliar and foreign-language lullabies. The researchers discovered universal elements of songs that produced relaxation effects independently of experience, supporting the idea that there is something universal about lullabies.

SourceHarvard University·JournalNature Human Behaviour·DateOct 19, 2020

Creating perfect edges in 2D-materials

Scientists at Chalmers University of Technology develop a new method for controlling the edges of two-dimensional materials, resulting in extremely sharp and atomically precise patterns. This breakthrough enables the creation of perfect edges in 2D materials, opening up new possibilities for nanoscience and technology.

SourceChalmers University of Technology·JournalNature Communications·DateOct 19, 2020

Odors as navigational cues for pigeons

Researchers have identified volatile organic compounds used for olfactory navigation by homing pigeons, generating regional olfactory maps that can be used as a compass to return home from unfamiliar sites. The study provides evidence for the existence of suitable regional chemical gradients in the air.

SourceMax-Planck-Gesellschaft·JournalScientific Reports·DateOct 19, 2020

What lies between grey and white in the brain

A multidisciplinary team has successfully visualized superficial white matter in living human brains using high-field MRI. The study reveals that this region contains significant amounts of iron, necessary for myelination, which can occur throughout lifespan but is predominant during development.

SourceMax-Planck-Gesellschaft·JournalScience Advances·DateOct 19, 2020

Astrophysics team lights the way for more accurate model of the universe

Researchers at the University of Texas at Dallas have developed a self-calibration method to remove contamination from gravitational lensing signals, allowing for more accurate measurements of key cosmological parameters. This breakthrough has significant implications for understanding dark energy and the structure of the universe.

SourceUniversity of Texas at Dallas·JournalThe Astrophysical Journal Letters·DateOct 19, 2020

Biochar helps hold water, saves money

A new study from Rice University shows that biochar can help farmers save money by retaining water in sandy soils, with potential irrigation savings of over 50%. The research provides formulas for farmers to estimate water-holding capacity and irrigation cost savings.

The line of succession

A specific region of messenger RNAs plays a crucial role in brain cell function. The study reveals an unusual EXAR (EXon-Activated Rescue) mechanism that secures this process, using ELAV and FNE proteins to determine neuronal transcript signatures.

SourceMax-Planck-Gesellschaft·JournalMolecular Cell·DateOct 19, 2020

Smarter models, smarter choices

Researchers developed a new mathematical framework that leverages uncertainty and expert knowledge to create more accurate and efficient computer models. This method provides guarantees on model performance and can lead to breakthroughs in renewable energy, battery technology, and other fields.

SourceUniversity of Delaware·JournalScience Advances·DateOct 19, 2020