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Science News Archive September 2015 - Page 10


Page 10 of 35

The rise of X-ray beam chemistry

Researchers at Argonne National Laboratory create a new surface microscope that allows them to control the chemical environment and image minerals as they react under extreme conditions. The technique, called X-ray reflection interface microscopy (XRIM), enables scientists to study reaction front instabilities in real-time.

Fewer patients die at fully accredited hospitals

A new study published in International Journal of Quality in Health Care found an association between hospital accreditation and mortality rate among patients. Hospitals that fully met the requirements of the Danish Healthcare Quality Programme had a significantly lower mortality rate compared to those that only partially met the stand...

SourceAarhus University·JournalInternational Journal for Quality in Health Care·DateSep 24, 2015

New method to better understand atomic nuclei

Physicists at Ruhr-University Bochum have developed a new approach to carry out precision calculations of the forces acting between protons and neutrons in atomic nuclei. This method uses effective field theory and a new method for analyzing theoretical uncertainties, allowing for a more accurate description of nuclear systems.

SourceRuhr-University Bochum·JournalPhysical Review Letters·DateSep 24, 2015

11-year cosmic search leads to black hole rethink

Scientists used Parkes telescope for 11 years to detect gravitational waves but found nothing, suggesting that black holes may merge quickly without generating waves. The lack of detection has implications for astronomers who want to use pulsar timing techniques to spot gravitational waves.

SourceCSIRO Australia·JournalScience·DateSep 24, 2015

Frontline treatments show best results for unexplained infertility

A study published in the New England Journal of Medicine found that letrozole did not improve pregnancy rates and live birth rates for women with unexplained infertility, but clomiphene remained the best option. Clomiphene enabled production of more eggs and hormones, while gonadotropin had the highest rate of pregnancy and live births.

SourceMedical College of Georgia at Augusta University·JournalNew England Journal of Medicine·DateSep 23, 2015

The world's nitrogen fixation, explained

Yale University scientists have designed a new chemical compound that mimics the properties of nitrogenase, an enzyme responsible for natural nitrogen fixation. The findings could lead to the development of synthetic catalysts that turn nitrogen into ammonia, reducing transportation and production costs.

SourceYale University·JournalNature·DateSep 23, 2015

9,000-year-old ritualized decapitation found in Brazil

A 9,000-year-old case of human decapitation has been discovered in Lapa do Santo, Brazil, featuring amputated hands and v-shaped cut marks on the jaw and vertebrae. The remains are believed to demonstrate sophisticated mortuary rituals among hunter-gatherers in the Americas.

SourcePLOS·JournalPLOS ONE·DateSep 23, 2015

Twisting neutrons

Scientists at Joint Quantum Institute successfully control orbital angular momentum of neutron waves, a fundamental property of matter waves. The achievement uses a counterintuitive property of neutrons to twist the phase of their wavefunction, enabling potential applications in neutron imaging and quantum information processing.

SourceJoint Quantum Institute·JournalNature·DateSep 23, 2015

Man walks again after years of paralysis

A participant with complete paralysis regained walking ability using a brain-controlled system that utilizes electroencephalogram signals. The study, published in Journal of NeuroEngineering and Rehabilitation, demonstrates the feasibility of non-invasive leg muscle stimulation using direct brain control.

SourceBMC (BioMed Central)·JournalJournal of NeuroEngineering and Rehabilitation·DateSep 23, 2015