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Science News for October 28, 2016


Novel approach in primary care setting may help identify patients with COPD

Researchers develop a simple tool to identify patients with chronic obstructive pulmonary disease (COPD) in primary care settings using five questions and peak expiratory flow meters. The approach shows high sensitivity and specificity rates, and may improve COPD diagnosis, quality of life, and health outcomes.

SourceAmerican Thoracic Society·JournalAmerican Journal of Respiratory and Critical Care Medicine·DateOct 28, 2016

Prevalence of immunosuppression among US adults

A study published in JAMA analyzed data from the 2013 National Health Interview Survey to estimate the prevalence of self-reported immunosuppressed adults in the United States. The estimated US prevalence of immunosuppression is 2.7%, with higher rates among women, whites, and individuals aged 50-59 years.

SourceJAMA Network·JournalJAMA·DateOct 28, 2016

Novel light sources made of 2-D materials

Researchers have developed novel light sources using 2-D materials, which can be used to transfer information securely. The light sources emit photons in pairs, making them ideal for quantum communication. Additionally, the novel lasers exhibit self-sustaining properties, opening up new possibilities for studying quantum effects.

SourceUniversity of Würzburg·JournalNature Communications·DateOct 28, 2016

Close up of the new mineral merelaniite

A team of scientists from Michigan Technological University and other institutions has discovered a new mineral, merelaniite, with a complex structure composed of layers of molybdenum disulfide and lead sulfide. The discovery showcases the intricate microscopic beauty of exotic materials, which may have useful applications.

Study finds that sleep apnea therapy has positive impact on hypertensive patients

A new study found that positive airway pressure (PAP) therapy for sleep apnea significantly improves patient-reported outcomes in hypertensive patients, including reduced daytime sleepiness, depressive symptoms, and fatigue severity. The study also showed consistent improvement even in resistant hypertension cases.

SourceAmerican Academy of Sleep Medicine·JournalJournal of Clinical Sleep Medicine·DateOct 28, 2016

Conundrum of missing iron in oxygen minimum zones solved

A international research team has discovered a new biogeochemical process that explains the removal of dissolved iron from seawater in oxygen minimum zones. This process, which involves the reaction of iron with nitrate instead of oxygen, is essential for understanding nutrient availability and carbon fixation in the oceans.

SourceHelmholtz Centre for Ocean Research Kiel (GEOMAR)·JournalEarth and Planetary Science Letters·DateOct 28, 2016

New research paves way for anti-cancer treatment

Researchers developed a new lab technique that may improve anti-cancer treatment success rates by predicting patient responses to modified drug-eluting beads. The method was tested in lab experiments and validated with in vivo data, enabling accurate predictions without risking patients.

SourceUniversity of Huddersfield·JournalEuropean Journal of Pharmaceutical Sciences·DateOct 28, 2016

Scientists discover way to make milk chocolate have dark chocolate health benefits

Researchers developed a method to infuse peanut skin extracts into maltodextrin powder, which was then incorporated into milk chocolate. The resulting product had antioxidant properties comparable to dark chocolate without affecting the taste. Consumer testing showed that the fortified chocolates were liked as well as untreated samples.

SourceInstitute of Food Technologists·JournalJournal of Food Science·DateOct 28, 2016

Colorado River's dead clams tell tales of carbon emission

The Colorado River delta's annual carbon cycle has changed dramatically due to poor water management, with fossil clam shells revealing vast amounts of carbon being added to the atmosphere. The reduced carbon emissions at the delta are vastly outweighed by the carbon emissions from transporting water to cities and farms.

SourceCornell University·JournalRoyal Society Open Science·DateOct 28, 2016

New biochar model scrubs CO2 from the atmosphere

A new biochar model suggests using a bioenergy-biochar system to remove carbon dioxide from the atmosphere, potentially becoming a viable option for climate change mitigation. This approach involves charring organic material and producing carbon-sequestering biochar that can be used as fertilizer and improve crop production.

SourceCornell University·JournalNature Communications·DateOct 28, 2016

Autism spectrum disorder linked to mutations in some mitochondrial DNA

A study of 903 children with autism spectrum disorder found that they have more harmful mitochondrial DNA mutations than their unaffected siblings. These mutations can be inherited from the mother or result from spontaneous mutation during development, increasing the risk of neurological and developmental problems.

SourcePLOS·JournalPLOS Genetics·DateOct 28, 2016

Science: Public interest high, literacy stable

A US survey finds that while 51% of Americans are interested in science, only 28% have a sufficient level of scientific understanding. The adult literacy rate is driven by completion of college-level science courses and baccalaureate degrees. NASA's educational programs aim to boost science literacy among learners of all ages.

A tiny machine

Researchers at UCSB have developed a functional nanoscale computing device, operating on an unconventional type of logic that could be packed into a block no bigger than 50 nanometers. This technology has the potential to store and process data much faster, reducing energy consumption and increasing computing efficiency.