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Science News Archive May 2017 - Page 17


Page 17 of 42

Scientists perform first-principles simulation of transition of plasma edge to H-mode

Physicists at PPPL have simulated the spontaneous transition of turbulence at the plasma edge to H-mode using a first-principles-based model. The simulation reveals that both turbulence-generated and non-turbulent sheared flows contribute to the bifurcation, providing the physics-basis for successful tokamak operation.

SourceDOE/Princeton Plasma Physics Laboratory·JournalPhysical Review Letters·DateMay 18, 2017

Worse pain outcomes after knee replacement for patients who took opioids before surgery

A study published in The Journal of Bone & Joint Surgery found that patients who previously took prescription opioids had a higher average pain score six months after knee replacement surgery. This suggests that preoperative opioid use may be problematic due to its negative effects on subsequent total knee arthroplasty outcomes.

SourceWolters Kluwer Health·JournalJournal of Bone and Joint Surgery·DateMay 18, 2017

100-year-old fertility technique reduces need for IVF

A 100-year-old medical technique, hysterosalpingography (HSG), has been proven to increase fertility rates in infertile women. Using an iodised poppy seed oil solution significantly improves pregnancy rates within six months, with 40% of women achieving successful pregnancies compared to 29% with water-based solution.

SourceUniversity of Adelaide·JournalNew England Journal of Medicine·DateMay 18, 2017

Flat Antarctica

A new study published in Earth System Dynamics finds that Antarctica's slower warming pace may be due to its high land height. The research suggests that if Antarctica were flat, it would warm more quickly due to changes in heat transport by the atmosphere and oceans.

SourceEuropean Geosciences Union·JournalEarth System Dynamics·DateMay 18, 2017

Opioid use before knee replacement surgery results in worse pain outcomes for patients

A recent study published in the Journal of Bone and Joint Surgery found that preoperative opioid use is associated with less pain reduction after total knee replacement surgery. Patients who used opioids before their procedure experienced about 9 percent less pain relief at six months following surgery compared to those who did not.

SourceBrigham and Women's Hospital·JournalJournal of Bone and Joint Surgery·DateMay 18, 2017

Cancer prevention & early detection, 2017-2018

The report assesses current cancer risk factors and prevention measures, highlighting improvements in some areas but stagnation or decline in others. Cigarette smoking among adults has dropped to 15% but remains high in certain geographic areas, while obesity prevalence continues to rise, particularly among black women.

Studies link healthy brain aging to omega-3 and omega-6 fatty acids in the blood

Researchers found correlations between blood levels of omega-3 fatty acids and fluid intelligence in healthy elderly adults, suggesting a potential role for dietary intake of these nutrients. The studies also linked the balance of omega-3 and omega-6 fatty acids to memory preservation and brain structure.

SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalNutritional Neuroscience·DateMay 18, 2017

How enzymes communicate

Researchers have discovered that enzymes can be activated by electrical stimulation, leading to ultrafast signal transfer within cells. This process allows for locally restricted signaling, preventing unwanted cellular processes such as cell death.

SourceUniversity of Freiburg·JournalProceedings of the National Academy of Sciences·DateMay 18, 2017

Predators are real lowlifes

A recent study deployed green clay caterpillars across six continents to reveal that insects are responsible for the majority of predation observed. The findings suggest that predation pressure is stronger in the tropics due to the need for insects to innovate defense mechanisms against predators.

Tooth truth

A new method in dentine analysis reveals permanent records of Vitamin D deficiency, shedding light on human adaptation and health conditions. The study offers a valuable resource for understanding rickets, affecting over 1 billion people worldwide.

A step towards understanding Zika

Researchers successfully synthesized Zika virus from a viral sequence detected in infected tissue, allowing them to induce microcephaly in pregnant mice and study its transmission by mosquitoes. This breakthrough helps advance research into the mysterious emergence of Zika virus, which causes devastating foetal brain infections.

SourceUniversity of Queensland·JournalmSphere·DateMay 17, 2017

Are we educating educators about academic integrity?

A study found that academic integrity is not a core concept taught to academics in UK Higher Education, despite its central importance. Researchers recommend including academic integrity as a core concept in learning and teaching to prevent it from being seen as a standalone disciplinary concept.

SourceSwansea University·JournalAssessment & Evaluation in Higher Education·DateMay 17, 2017

Unveiling nasty act of trans-fatty acids in blood

Trans-fatty acids directly activate ASK1 kinase by enhancing extracellular ATP, promoting cell death in a more direct manner than previously thought. The study identifies several trans-fatty acid types that stimulate cell death, but not their corresponding cis-fatty acids, which have health benefits.

SourceTohoku University·JournalJournal of Biological Chemistry·DateMay 17, 2017

Tiny bubbles help heal broken bones, in pigs

Researchers have developed a novel gene therapy method that utilizes microbubbles and ultrasound to promote bone growth and healing in nonunion fractures. The technique, which involves injecting genetic material for a bone growth factor into the affected area, has been shown to completely heal broken bones in pigs within eight weeks.

SourceAmerican Association for the Advancement of Science (AAAS)·JournalScience Translational Medicine·DateMay 17, 2017

How have European freshwater fish species changed over time?

Since 1840, European freshwater fish species have undergone significant changes, with non-native species outnumbering native ones. Human activities, such as habitat destruction and intentional introductions, have led to an increase in taxonomic homogenization across Europe.

SourceWiley·JournalJournal of Biogeography·DateMay 17, 2017