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Science News Archive 2019 - Page 52


Page 52 of 486

Are hyoliths Palaeozoic lophophorates?

Researchers analyzed hundreds of hyolith fossils and discovered soft parts with tentaculate feeding organs, challenging the current phylogenetic placement. The findings suggest that hyoliths likely occupied a more basal position in the Lophophorata, contrary to previous assumptions.

SourceScience China Press·JournalNational Science Review·DateNov 18, 2019

How gene expression noise shapes cell fate

A new method called VarID quantifies gene expression variability across groups of similar or related cell states, revealing the dynamics of biological noise during cell differentiation. This approach may help understand how gene expression noise regulates development and cell fate decisions.

SourceMax-Planck-Gesellschaft·JournalNature Methods·DateNov 18, 2019

Foam offers way to manipulate light

A Princeton University study reveals a type of foam can block specific wavelengths of light while allowing others to pass through, creating a photonic band gap. This property has the potential to control the flow of electrons in materials and could lead to breakthroughs in telecommunications.

SourcePrinceton University, Engineering School·JournalProceedings of the National Academy of Sciences·DateNov 18, 2019

Study -- disparities in care among homeless adults hospitalized for cardiovascular conditions

A study found striking disparities in in-hospital care and mortality between homeless and non-homeless adults hospitalized for urgent cardiovascular conditions. Homeless patients were significantly less likely to receive important diagnostic or therapeutic procedures and generally had higher in-hospital death rates compared to non-home...

SourceBeth Israel Deaconess Medical Center·JournalJAMA Internal Medicine·DateNov 18, 2019

New assessment finds EU electricity decarbonization discourse in need of overhaul

A new study challenges the EU's approach to decarbonizing its economy, arguing that it overlooks the importance of functional societal change. The researchers propose a new methodological approach to analyze complex issues like electricity decarbonization, highlighting the need for policies that motivate use changes.

SourceUniversitat Autonoma de Barcelona·JournalEnergy Research & Social Science·DateNov 18, 2019

What will make grandma use her Fitbit longer?

A Michigan State University study found that older adults are more likely to use wearable activity trackers for longer periods if they offer a variety of functions, such as tracking calories burned or mood. Technological savviness and partnership-based motivation also play a crucial role in long-term adoption.

SourceMichigan State University·JournalTelemedicine and e-Health·DateNov 18, 2019

Uncovering the pathway to wine's acidity

The University of Adelaide team identified an enzyme that helps produce natural tartaric acid in grapes, enabling winemakers to balance sweetness and acidity. This discovery has the potential to save the Australian wine industry significant sums of money by reducing reliance on expensive additives.

SourceUniversity of Adelaide·JournalJournal of Biological Chemistry·DateNov 18, 2019

Tracking inheritance of human mitochondrial DNA

A study reveals how mitochondrial DNA is transmitted between generations, showing that a bottleneck occurs during oogenesis, reducing genetic diversity. This process can affect the inheritance of disease-related mutations, making it crucial for genetic counseling in women planning pregnancies.

SourcePenn State·JournalProceedings of the National Academy of Sciences·DateNov 18, 2019

Oil and gas well leakage in British Columbia

Researchers analyzed data on oil and gas well leakage in British Columbia, finding that 10.8% of wells showed reported leakage, with most incidents involving gas venting. Unremediated surface gas leakage from abandoned wells is estimated to produce significant GHG emissions, equivalent to nearly 75,000 metric tonnes of CO2 per year.

SourceProceedings of the National Academy of Sciences·JournalProceedings of the National Academy of Sciences·DateNov 18, 2019

Benefits of exercise referral schemes not as large as hoped

Exercise referral schemes have been shown to improve physical activity levels among individuals with long-term conditions. However, the analysis of data from 23,731 participants found that while significant improvements were observed in most measures, they did not reach clinical thresholds for meaningful impact.

SourceBMJ Group·JournalJournal of Epidemiology and Community Health·DateNov 18, 2019

Study measures impact of agriculture on diet of wild mammals

Researchers analyzed stable carbon and nitrogen isotopes in fur samples from 29 species of mammals to measure the impact of agriculture on their diet. The study found that herbivores and omnivores inhabiting forest fragments consumed agricultural resources, while carnivores close to croplands preyed on prey that feed on these resources.

SourceFundação de Amparo à Pesquisa do Estado de São Paulo·JournalProceedings of the National Academy of Sciences·DateNov 18, 2019

Statins not associated with memory or cognition decline in elderly, may be protective in some patients

A new study published in the Journal of the American College of Cardiology found no association between statin use and memory or cognitive decline in elderly patients. Statin users showed similar cognitive performance to never-users, suggesting potential protective effects in this population.

SourceAmerican College of Cardiology·JournalJournal of the American College of Cardiology·DateNov 18, 2019