The premier online source for science news since 1996. A service of the American Association for the Advancement of Science.
Updated: 43 sec ago
Researchers find that primary school children with reduced cognitive skills for planning and self-restraint are more likely to show increased aggression in middle childhood. The study examined the relationship between aggression and executive function -- a measure of cognitive skills that allow a person to achieve goals by controlling their behavior. The results suggest that helping children to increase their executive function could reduce their aggression.
When noble metals are treated with an aliphatic thiol, a uniform monolayer self-assembles on the surface; this phenomenon is interesting because the conducting molecules produce unique quantum properties that could be useful in electronics. Attempts to measure the current across this thin skim have yielded varied results, but researchers in France developed a stable mechanical setup to measure conductance across individual molecules with greater success. The results are in this week's Journal of Applied Physics.
A study by the Harvard Pilgrim Health Care Institute found that contrary to current hepatitis C treatment guidelines, an eight-week treatment regimen may be just as effective as 12 weeks in black patients.
The Advancing Cryptococcal Meningitis Treatment for Africa (ACTA) trial funded by the Medical Research Council (UK) and ANRS (France) has highlighted the benefits of new therapeutic regimens in the treatment of cryptococcal meningitis, a frequent and severe opportunistic disease in patients living with HIV. In light of these findings, reported in the March 15, 2018 issue of the New England Journal of Medicine, the WHO has changed its guidelines regarding treatment of this fungal infection.
Researchers at the University of Sheffield have successfully used computer simulated models and medical imaging to test the strength of young children's bones, producing results which could help car seat manufacturers design safer car seats for young children.
Ten new attacks and nine prior attacks on 4G LTE networks were outlined in a paper.
A Spectrum Health study has found that dementia patients are not undergoing evaluation at the onset of the dementia process, a delay that prevents early, beneficial treatment. Researchers retrospectively reviewed 110 randomly-chosen initial evaluations from the Spectrum Health Medical Group Neurocognitive Clinic. They found that 78.9 percent of the patients evaluated already had moderate or severe dementia at the time of diagnosis. The study suggests that home-based, patient-centered care may improve early screening and detection.
Psychologists found that when we learn the names of unfamiliar objects, brain regions involved in learning actively predict the objects the names correspond to.
Salk scientists create new molecular scissors to correct protein imbalance in cellular model of dementia.
Chondroitin sulfate, a dietary supplement taken to strengthen joints, can speed the growth of a type of melanoma, according to experiments conducted in cell culture and mouse models.
A contradiction, about how a type of neurons generates signals, was now resolved by researchers at the Institute of Science and Technology (IST) Austria. Writing in Neuron, Professor Peter Jonas and first author Hua Hu reconcile the observation that fast-spiking, parvalbumin-expressing GABAergic interneurons send trains of rapid signals, thought to be energy expensive, with the limited energy supply reaching the brain.
Graphene's geometry allows it to adhere well to hairs without use of harsh chemicals and could be used to make hair conductive for use in bio-integrated electronics.
A study from UT Southwestern's Peter O'Donnell Jr. Brain Institute demonstrates that a bird's song can be altered -- to the syllable -- by activating and deactivating a neuronal pathway responsible for helping the brain determine whether a vocalization is performed correctly.
Insulin resistance and elevated blood glucose levels are considered to be the cause of type 2 diabetes. However, scientists from the German Cancer Research Center (DKFZ) and Heidelberg University Hospital have now provided evidence that things might be completely different. They showed in flies that elevated levels of the metabolite MG (methylglyoxal) cause the typical diabetic disturbances of the metabolism and lead to insulin resistance, obesity and elevated blood sugar levels.
Researchers at the German Center for Neurodegenerative Disease (DZNE) have found a possible explanation for the difficulty in spatial orientation experienced sometimes by elderly people. In the brains of older adults, they detected an unstable activity in an area that is central for spatial navigation. The results are reported in the journal Current Biology. In the long term, these findings might open up new ways for detecting Alzheimer's disease.
Graphene, a naturally black material, could provide a new strategy for dyeing dark hair that will make it less prone to staticky flyaways. In an article published March 15 in the journal Chem, researchers have put it to the test. They used sheets of graphene to make a dye that adheres to the surface of hair, forming a coating that is resistant to 30 washes without the need for chemicals that damage the hair cuticle.
Modern humans co-existed and interbred not only with Neanderthals, but also with another species of archaic humans, the mysterious Denisovans. Research published March 15 in Cell describes how, while developing a new genome-analysis method for comparing whole genomes between modern human and Denisovan populations, researchers unexpectedly discovered two distinct episodes of Denisovan genetic intermixing, or admixing, between the two. This suggests a more diverse genetic history than previously thought between the Denisovans and modern humans.
Honeybee larvae develop into queen bees if they are fed large quantities of a food called royal jelly. But royal jelly does more than determine whether a larva becomes a queen: it also keeps her safely anchored to the roof of the queen cell in which she develops. Research published in Current Biology on March 15 explains how the pH of royal jelly helps make the substance viscous enough to keep the queen-to-be from falling.
One of the biggest current threats to global health is the rise of multi-drug resistant bacteria, caused by the spreading of antibiotic resistance amongst them. In an attempt to help fight this threat, EMBL researchers have unraveled the molecular basis of a major antibiotic resistance transfer mechanism. They also developed molecules and a proof-of-principle for blocking this transfer. Cell publishes their results on March 15.
This week, thousands of graduating medical students around the country will find out where they'll head next, to start their residency training. But a new study gives the first objective evidence of the heavy toll that the first year of residency can take on their sleep, physical activity and mood.