Add BrightSurf on Google Email

Science News Archive November 2016 - Page 33


Page 33 of 38

Nanostructures made of pure gold

Researchers at TU Wien have successfully created nanostructures made of pure gold using an additive direct-write lithography technique. The new method allows for the fabrication of three-dimensional gold structures, which are essential for various applications in electronics and sensor technology.

SourceVienna University of Technology·JournalScientific Reports·DateNov 4, 2016

E-cig vapor does not induce genetic mutations associated with cigarette smoke exposure

In a lab-based test using the Ames assay, scientists found that e-cigarette vapour did not cause DNA mutations in bacteria, unlike tobacco smoke. The results suggest that e-cigarettes may be less harmful than cigarettes, supporting growing evidence of their potential as a safer alternative.

SourceR&D at British American Tobacco·JournalMutation Research/Genetic Toxicology and Environmental Mutagenesis·DateNov 4, 2016

On-chip observation of THz graphene plasmons

Scientists developed a technique to image THz photocurrents with nanoscale resolution, visualizing strongly compressed THz waves in a graphene photodetector. The imaging technique, called THz photocurrent nanoscopy, provides unprecedented possibilities for characterizing optoelectronic properties at THz frequencies.

SourceElhuyar Fundazioa·JournalNature Nanotechnology·DateNov 4, 2016

When dictators die, stability reigns

A study found that dictatorships remain stable 87% of the time following a leader's death, whereas other forms of leadership exit result in stability only 43% of the time. This is likely due to loyal followers who support the status quo and have an incentive to preserve their privileged access to office.

SourceMichigan State University·JournalJournal of Democracy·DateNov 3, 2016

Mixtec evangelicals

UCSB scholar Mary I. O'Connor's new book highlights how economic migration and religious conversion have changed the social and cultural makeup of predominantly folk-Catholic communities in rural Mexico. Globalization is at the heart of this process, affecting the home communities of Mixtecs who travel to northern Mexico and the U.S.

Study details rare cardiac side effects of immune checkpoint cancer therapies

A study published in The New England Journal of Medicine details two cases of acute and unexpected fatal myocarditis that occurred in melanoma patients following treatment with a combination of ipilimumab and nivolumab. High-dose corticosteroids were initially administered, but both patients died due to the severe immune reaction.

SourceVanderbilt University Medical Center·JournalNew England Journal of Medicine·DateNov 3, 2016

Molecular conductors help plants respond to drought

Scientists at the Salk Institute have discovered key molecular conductors in plant stress responses, enabling a better understanding of how plants cope with environmental hardships. By controlling these conductors, researchers can potentially develop new technologies to optimize water use in plants and help agriculture adapt to drought.

SourceSalk Institute·JournalScience·DateNov 3, 2016

Adding hydrogen to graphene

Researchers at IBS discovered that hydrogenation of single-layer graphene proceeds rapidly over the entire surface, while few-layer graphene reacts slowly from the edges. Hydrogenation changes graphene's optical and electric properties. The study also found that defects or edges are necessary for the reaction to occur.

SourceInstitute for Basic Science·JournalJournal of the American Chemical Society·DateNov 3, 2016

Soda tax falls flat

A new study by Cornell University economist John Cawley found that the Berkeley soda tax resulted in price increases of less than expected, indicating consumer sensitivity. The study also showed that proximity to untaxed rival stores affects the pass-through of taxes to consumers.

SourceCornell University·JournalJournal of Policy Analysis and Management·DateNov 3, 2016

Smells like teen spirit

A recent meta-analysis found that all three sensory agents affect shoppers, but in different ways. Music is positively related to pleasure and satisfaction, while scent affects arousal, pleasure, and behavioral intentions. Retailers can tailor their environments using these stimuli to increase appeal.

SourceJournal of Retailing at New York University·JournalJournal of Retailing·DateNov 3, 2016

Physicists reveal cocktails with Dr. Jekyll and Mr Hyde features

Researchers discovered that two-liquid cocktails exhibit long-range correlations at equilibrium and when disturbed, resulting in coexistence of different characteristics within the same fluid. Understanding these effects is crucial for studying diffusion mechanisms in various physical and biological processes.

SourceSpringer·JournalThe European Physical Journal E·DateNov 3, 2016

Both providers and patients drive health care spending, study finds

A new study finds that both patients and healthcare providers account for half of the regional spending differences in medical costs. Patient characteristics, such as basic health and care preferences, contribute to nearly 50% of these disparities, while provider practices and incentives drive the remaining 50%. The research provides i...

SourceMassachusetts Institute of Technology·JournalThe Quarterly Journal of Economics·DateNov 3, 2016

Impact of sea smell overestimated by present climate models

Scientists from the Leibniz Institute for Tropospheric Research have published a comprehensive study revealing that current climate models overestimate the impact of dimethyl sulfide on oceanic clouds. The study found that aqueous-phase chemistry significantly reduces sulfur dioxide emissions, contradicting earlier projections.

SourceLeibniz Institute for Tropospheric Research (TROPOS)·JournalProceedings of the National Academy of Sciences·DateNov 3, 2016

Can you smell through your lungs?

Researchers discovered two olfactory receptors in human lung tissue that regulate airway smooth muscle cell contraction. Activation of these receptors may help constrict or prevent airway constriction in diseases such as asthma and emphysema.

SourceFrontiers·JournalFrontiers in Physiology·DateNov 3, 2016

High number of sports-related eye injuries in US

A study published in JAMA Ophthalmology estimates that approximately 30,000 individuals per year report to US emergency departments with sports-related eye injuries. The majority of these cases involve males playing basketball or baseball, with the latter leading to significant blowout fractures and impaired vision.

SourceJAMA Network·JournalJAMA Ophthalmology·DateNov 3, 2016