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Science News Archive 2019 - Page 328


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Surgery shown to improve walking for children with cerebral palsy

A new surgical procedure has been shown to improve movement and quality of life for children with cerebral palsy. The selective dorsal rhizotomy procedure involves cutting sensory nerves to relieve stiffness and pain. The study provided convincing evidence that the procedure helps children, with no significant health risks identified.

Food packaging claims mislead consumers with ideas of health

Research reveals that front-of-pack food claims on breakfast cereals can be uncorrelated with actual nutritional quality, yet still influence consumers' perceptions of taste, healthiness, and fattening consequences. The study identifies four distinct types of claims and their effects on consumer choices.

SourceINSEAD·JournalJournal of Public Policy & Marketing·DateApr 29, 2019

Systematic review shows risk of a child developing overweight or obesity is more than trebled by maternal obesity prior to pregnancy

A systematic review by Newcastle University researchers found that maternal obesity prior to pregnancy increases the risk of childhood obesity by over three times. The study also identified higher risks for children born to mothers with overweight BMI, emphasizing the need for early interventions focused on weight management.

Fleming's method in miniature

Researchers at ETH Zurich develop a new technique, nanoFleming, to rapidly test for antibiotic activity in microorganisms. The method has identified 11 novel peptides with improved efficacy or resistance-bypassing properties.

SourceETH Zurich·JournalNature Chemical Biology·DateApr 29, 2019

Attitudes toward physician-assisted death among adults with elevated level of biomarker associated with Alzheimer's disease

Cognitively normal adults with elevated levels of amyloid-β exhibited mixed attitudes toward physician-assisted death, reflecting complex emotions and values surrounding end-of-life care. The study highlights the need for nuanced discussions about dying wishes and advance care planning in this vulnerable population.

SourceJAMA Network·JournalJAMA Neurology·DateApr 29, 2019

House hunting is a struggle for mixed-race families

A new study by Brigham Young University researchers found that mixed-race couples with children are more likely to move to racially diverse neighborhoods, but often settle for less affluent areas. These couples face challenges in finding neighborhoods that balance affordability with diversity and access to quality education.

SourceBrigham Young University·JournalDemography·DateApr 29, 2019

Magma is the key to the moon's makeup

Researchers at Yale University and Japan offer an explanation for the moon's composition, suggesting that magma played a key role in its formation. The new model suggests that 80% of the moon is made up of proto-Earth materials, contradicting previous theories that suggested the impactor was responsible.

SourceYale University·JournalNature Geoscience·DateApr 29, 2019

Partitioning of porous materials

Scientists have developed a fast and versatile two-in-one synthetic strategy to partition pores in metal-organic frameworks (MOFs), resulting in highly efficient adsorbents. The new pore-space-partitioned MOF shows better gas uptakes than unpartitioned materials, particularly for ammonia uptake with high packing density.

SourceWiley·JournalAngewandte Chemie International Edition·DateApr 29, 2019

What makes memories stronger?

Studies in rats reveal that highly demanding and rewarding experiences result in stronger memories due to replay processes in the hippocampus. This finding provides new insights into memory consolidation, which could lead to treatments that strengthen memories and better understand memory decline in diseases like dementia.

How the olfactory brain affects memory

Researchers found that piriform cortex stimulation triggers synaptic plasticity in the hippocampus, leading to enhanced memory formation. The study provides a theoretical basis for understanding the special role of olfaction in memory formation and retrieval.

SourceRuhr-University Bochum·JournalCerebral Cortex·DateApr 29, 2019

Continuous chemotherapy improves outcomes and quality of life in advanced breast cancer

Patients with advanced HER2-negative breast cancer treated with continuous chemotherapy showed improved survival rates and maintained quality of life compared to intermittent scheduling. The study also found that treatment holidays had a negative impact on physical quality of life scores, with a clinically meaningful decline at 24 months.

SourceEuropean Society for Medical Oncology·JournalAnnals of Oncology·DateApr 29, 2019

Study links exam stress with junk food cravings, snacking, and eating less fruit and veg

A study found that university students who experience high levels of exam stress are more likely to crave junk food, snack frequently, and consume fewer fruits and vegetables. The study suggests that prevention strategies should integrate psychological and lifestyle aspects to combat stress-induced eating.

SourceEuropean Association for the Study of Obesity·JournalEuropean Journal of Nutrition·DateApr 29, 2019

Deep learning takes Saturn by storm

Researchers from UCL and University of Arizona developed a 'deep learning' approach called PlanetNet to detect storms on Saturn. The algorithm accurately maps the components and features in turbulent regions, revealing previously undetected atmospheric features such as ammonia ice clouds.

SourceUniversity College London·JournalNature Astronomy·DateApr 29, 2019