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Science News Archive July 2023 - Page 14


Page 14 of 36

Amplification of extreme El Niño events predicted despite CO2 reductions: A call to refine climate policy

Research predicts increased frequency and intensity of extreme El Niño events due to high atmospheric carbon dioxide, even after CO2 reduction. Simulations suggest potential climate regime shifts in affected regions, with some areas experiencing desertification while others face increased flooding.

Device makes hydrogen from sunlight with record efficiency

Rice University engineers have created a device that converts sunlight into hydrogen with unprecedented efficiency, opening up new possibilities for clean energy and sustainable fuel production. The innovative technology uses halide perovskite semiconductors and electrocatalysts in a single, durable device.

SourceRice University·JournalNature Communications·TypeExperimental study·DateJul 20, 2023

From chaos to light

A team of researchers from EPFL has found a way to harness the unique features of chaotic frequency combs to implement unambiguous and interference-immune massively parallel laser ranging. This innovative approach offers significant advantages over conventional methods, enabling hundreds of multicolor independent optical carriers.

SourceEcole Polytechnique Fédérale de Lausanne·JournalNature Photonics·TypeExperimental study·DateJul 20, 2023

Paleontologists identify two new species of sabertooth cat

Researchers discover two new sabertooth species, Dinofelis werdelini and Lokotunjailurus chimsamyae, in a global analysis of Langebaanweg fossils. The study reveals a diverse range of environments in Africa, with Machairodonti cats suggesting open grasslands and Metailurini cats indicating forested areas.

SourceCell Press·JournaliScience·TypeObservational study·DateJul 20, 2023

Majority of older adults with cognitive impairment still drive

A Michigan Medicine study in Texas found that 61.4% of older adults with cognitive impairment are still driving, but one-third of caregivers have concerns about their care recipient's ability to drive safely. Researchers emphasize the need for open discussions between caregivers and healthcare professionals to ensure safety.

SourceMichigan Medicine - University of Michigan·JournalJournal of the American Geriatrics Society·TypeData/statistical analysis·DateJul 20, 2023

(How) cells talk to each other

Researchers from ISTA and NUS developed a new theoretical model to understand long-range cell-cell communication. The model reveals the interplay between mechanical forces and biochemical signals in cells, shedding light on complex biological phenomena. It has potential applications in wound healing and understanding tissue behavior.

SourceInstitute of Science and Technology Austria·TypeComputational simulation/modeling·DateJul 20, 2023

New research sheds light on factors influencing trust and bias in societies

Researchers found that people with positive perceptions of their nation's institutions show more favoritism toward fellow citizens. Conversely, a strong identification with one's own nation aligns with previous studies. The study suggests support for national institutions can pose challenges to establishing trust across borders.

SourceSociety for Personality and Social Psychology·JournalSocial Psychological and Personality Science·TypeExperimental study·DateJul 20, 2023

CHOP researchers develop tool for helping predict Alzheimer’s risk in various ethnic populations

Researchers from Children's Hospital of Philadelphia have developed an algorithm to help predict Alzheimer's disease risk based on genetic information in patients with various ethnic backgrounds. The tool, called genomic informed risk assessment (GIRA), was tested in different ethnic populations and performed better than existing methods.

SourceChildren's Hospital of Philadelphia·JournalAlzheimer s & Dementia·TypeData/statistical analysis·DateJul 20, 2023

New study reveals reptiles’ spontaneous association between vision and hearing

A new study reveals that reptiles demonstrate spontaneous associations between visual and auditory information, including tortoises associating low sounds with large shapes and high pitch sounds with small shapes. This discovery shows how brains are prepared to predict visuo-acoustic correspondences likely to occur in the natural world.

SourceQueen Mary University of London·JournalBiology Letters·DateJul 20, 2023

Malnutrition during pregnancy increases diabetes incidence

Researchers at the Complexity Science Hub found a significant link between malnutrition during pregnancy and an increased risk of type 2 diabetes. The study analyzed data from over 3.5 million people in Austria and found that men born during severe famine periods had a 78% higher incidence rate of new diabetes cases.

SourceComplexity Science Hub·JournalHeliyon·TypeData/statistical analysis·DateJul 20, 2023

New study expands the scope of aza-friedel−crafts reactions

Researchers developed a general para-selective aza-Friedel-Crafts type reaction of phenols with imines, opening up new possibilities for the rapid and safe synthesis of medicines and advanced materials. The bulky PyBidine-Ni(OAc)2 catalyst facilitated highly para-selective reactions with up to 99:1 selectivity.

SourceChiba University·JournalACS Catalysis·TypeExperimental study·DateJul 20, 2023

A novel drug screen identifies potential new therapy to lower bad cholesterol levels

Researchers at the Medical University of South Carolina have identified a novel class of compounds that effectively lower cholesterol, triglycerides and apoB in human liver-like cells. These molecules work independently of the LDLR pathway and offer a new treatment regimen for patients with familial hypercholesterolemia.

SourceMedical University of South Carolina·JournalCommunications Biology·TypeExperimental study·DateJul 20, 2023

Analysis shows rise and fall of angry, fearful tweets with passage and implementation of Philadelphia beverage tax

Researchers analyzed Twitter posts about the Philadelphia beverage tax before and after its implementation, finding a shift from anger to acceptance. The study's findings highlight the potential of social media data to influence public opinion and provide valuable insights for health policy makers.

SourceNew York University·JournalJournal of Public Health Management and Practice·TypeData/statistical analysis·DateJul 20, 2023

Light quality enhances contrast vision

Scientists found that contrasting shades of brightness can be improved through selective stimulation of melanopsin cells, enabling better text and image distinction. This study's results suggest potential innovations in lighting devices and displays, paving the way for optimal visual environments.

SourceNagoya City University·JournalVision Research·TypeCommentary/editorial·DateJul 19, 2023

A non-covalent bonding experience

Researchers from the University of Iowa and Brookhaven National Laboratory create 14 organic-inorganic hybrid materials, including seven entirely new ones, to advance clean energy and safe nuclear energy. The study reveals new bonding mechanisms and insights into material separations and recycling.

SourceDOE/Brookhaven National Laboratory·JournalAngewandte Chemie·TypeComputational simulation/modeling·DateJul 19, 2023