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Science News Archive February 2023 - Page 12


Page 12 of 36

Study finds sinking tundra surface unlikely to trigger runaway permafrost thaw

Researchers used a high-performance computer simulation to study the impact of soil subsidence on permafrost thawing in the Arctic tundra. They found that uneven land subsidence leads to a drier landscape, which limits the process's acceleration through the end of the century.

SourceDOE/Oak Ridge National Laboratory·JournalProceedings of the National Academy of Sciences·TypeComputational simulation/modeling·DateFeb 21, 2023

Ultrawide measurement for viscous fluids comes to chip-scale devices from bendable strips

Researchers developed a miniaturized viscometer using GaN optical device and bendable strip, achieving an ultra-wide viscosity range of 10^0 - 10^6 mPa·s. The viscometer demonstrated real-time monitoring capabilities and low sample consumption, making it suitable for practical applications.

Quarks and gluons: The JADE experiment at DESY

The JADE experiment at DESY discovered the gluon, a particle that binds quarks together to form protons and neutrons. The discovery confirmed the theory of quantum chromodynamics (QCD) and was recognized with the 2004 Nobel Prize for Physics.

SourceSpringer·JournalThe European Physical Journal H·DateFeb 20, 2023

Study finds 'staggering increase' in methamphetamine deaths tied to opioid co-use

Research reveals a staggering increase in US methamphetamine-related deaths, with most linked to heroin or fentanyl co-use. The number of deaths attributed to methamphetamine increased 50-fold between 1999 and 2021, with many fatal combinations involving fentanyl.

SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalAmerican Journal of Public Health·TypeData/statistical analysis·DateFeb 20, 2023

The switch made from a single molecule

Researchers at University of Tokyo's Institute for Solid State Physics have demonstrated a switch made from a single fullerene molecule that can function as multiple high-speed switches simultaneously. This technology could lead to unprecedented levels of resolution in microscopic imaging devices.

SourceUniversity of Tokyo·JournalPhysical Review Letters·TypeExperimental study·DateFeb 20, 2023

New Jersey regulation not associated with curbed opioid prescriptions or shortened usage

A Rutgers University analysis of Medicaid records found that the regulation did not reduce progression from short-term to long-term opioid use, but did decrease new prescriptions written for more than five days. This change may have reduced leftover opioids available for misuse, but also forced patients who needed longer treatments to ...

SourceRutgers University·JournalJournal of General Internal Medicine·DateFeb 20, 2023

Genomic study reveals signs of TB adaptation in ancient Andeans

A new genomic study found signs of TB adaptation in ancient Andean populations, thousands of years before European contact. The study suggests that Indigenous people in present-day Ecuador developed an immune response to tuberculosis around 3,000 years ago, when agriculture began proliferating in the region.

SourceEmory University·JournaliScience·TypeComputational simulation/modeling·DateFeb 20, 2023

Scientists unveil the highest quality map of sea turtles’ genomes – their future may lie in their evolutionary history

Researchers have created detailed genetic maps of green and leatherback sea turtle genomes, providing insights into their unique adaptations and evolutionary history. The study reveals that genetic differences between the two species are mainly found on microchromosomes, which may hold the key to each species' survival.

SourceLeibniz Institute for Zoo and Wildlife Research (IZW)·JournalProceedings of the National Academy of Sciences·TypeData/statistical analysis·DateFeb 20, 2023

Building a computer with a single atom

A new study by Tulane University demonstrates that even a single atom can act as a reservoir for computing, processing information optically. The researchers proposed a non-linear single-atom computer where input and output are encoded in light, enabling flexible computation with any desired outcome.

SourceSpringer·JournalThe European Physical Journal Plus·DateFeb 20, 2023

Human contact makes for happier and healthier dairy calves

A new study found that human contact, including neck scratches, can reduce stress and improve well-being in weaning dairy calves. The research showed that calves housed alone benefited most from the extra human interaction, leading to decreased sucking behaviors and increased rest after meals.

SourceElsevier·JournalJDS Communications·TypeObservational study·DateFeb 20, 2023

Prisons and Probation Ombudsman should improve transparency in death investigations to improve prison safety, report finds

A new report by the University of Nottingham highlights the need for improved transparency in prisoner death investigations to reduce self-inflicted deaths in prisons. The study recommends that the Prisons and Probation Ombudsman adopts more explicit methodology and acknowledges systemic hazards to prevent similar incidents.

SourceUniversity of Nottingham·TypeData/statistical analysis·DateFeb 20, 2023

Mid-twentieth-century physics in the home of Galileo

Fermi statistics and electronic coincidence circuits were developed at the Institute of Physics in Florence, laying the groundwork for modern electronics. The institute continued to thrive after WWII, establishing a strong theoretical physics program that remains active today.

SourceSpringer·JournalThe European Physical Journal H·DateFeb 20, 2023

Using light to switch drugs on and off

Researchers at the Paul Scherrer Institute have developed a film that demonstrates the potential of photopharmacology in treating diseases such as cancer. The new approach uses light to switch on and off a molecular photoswitch, allowing for targeted and reversible drug action.

SourcePaul Scherrer Institute·JournalNature Communications·TypeExperimental study·DateFeb 20, 2023

Education levels impact on belief in scientific misinformation and mistrust of COVID-19 preventive measures

A new study published in Vaccines found that individuals with a university degree were more likely to believe in the effectiveness of COVID-19 preventive measures. The research also revealed that people with higher education levels had lower levels of trust in scientific misinformation, highlighting the importance of education in shapi...

SourceUniversity of Portsmouth·JournalVaccines·TypeSurvey·DateFeb 20, 2023

Tuberculosis patients see dramatic cut in treatment duration, treatment effectiveness remains

A groundbreaking study found that a new TB treatment strategy can shorten treatment duration while maintaining effectiveness. The TRUNCATE-TB trial showed that an initial 8-week treatment period followed by retreatment for those not cured was as effective as the standard 6-month treatment but halved the average total time on treatment.

SourceNational University of Singapore, Yong Loo Lin School of Medicine·JournalNew England Journal of Medicine·TypeRandomized controlled/clinical trial·DateFeb 20, 2023

Finely-tuned quantum dots enhance nonlinear optics

Researchers have discovered a way to fine-tune quantum dots to enhance their nonlinear optical properties, allowing for tighter control over light emission frequency and brightness. This breakthrough could lead to significant advances in optoelectronic devices such as LEDs and light-based computer circuits.

SourceSpringer·JournalThe European Physical Journal D·DateFeb 20, 2023

Researchers develop machine learning model to improve Amazon carbon storage estimates

Researchers developed a machine learning model using high-resolution satellite imagery to estimate aboveground carbon stocks in the Amazon. The study found that accounting for uncertainties in forest degradation classification led to lower estimates of mean carbon density, suggesting earlier estimates may have been over-optimistic.

SourceOregon State University·JournalCarbon Balance and Management·TypeComputational simulation/modeling·DateFeb 20, 2023

Study shows long-term trend of undocumented Mexican immigrants most at risk for deportation from U.S.

A study led by Emory University found that young, single, and less educated men were disproportionately deported during the Trump administration, despite differing rhetoric. The research analyzed data from three administrations and suggests that immigration policies have unintended consequences on immigrant groups.

SourceEmory University·JournalProceedings of the National Academy of Sciences·TypeData/statistical analysis·DateFeb 20, 2023

Exploring the polysaccharide composition of plant cell walls in succulent aloes

Researchers investigated polysaccharide composition of hydrenchyma tissue in 93 different species of aloes to understand connection with medicinal use, phylogeny, growth form, distribution, and leaf morphology. The study found that polysaccharide composition primarily correlates with growth form and leaf morphology.

SourceUniversity of Copenhagen·JournalPlants People Planet·TypeExperimental study·DateFeb 20, 2023

HKU Engineering generates Fermat’s spiral patterns using solutal Marangoni-driven coiling in an aqueous two-phase system

Researchers at HKU Engineering have developed a new type of continuous Marangoni transport system that generates highly ordered Fermat's spiral patterns. The system utilizes an aqueous two-phase system, inspiring potential biological applications and novel methods for fibre fabrication.

SourceThe University of Hong Kong·JournalNature Communications·TypeComputational simulation/modeling·DateFeb 20, 2023

SMART researchers develop first nanotube sensors capable of detecting and distinguishing gibberellin plant hormones

Scientists have created a non-destructive method to detect and differentiate gibberellins, a class of plant hormones crucial for growth. The new nanosensors can identify changes in GA levels across various plant species, enabling early interventions against salinity stress.

SourceSingapore-MIT Alliance for Research and Technology (SMART)·JournalNano Letters·TypeExperimental study·DateFeb 20, 2023

Global proportion of disordered eating in children and adolescents

A systematic review of 32 studies involving 63,000 participants from 16 countries found that disordered eating affects approximately 22% of children and adolescents globally. The study highlights the need for public health strategies to prevent eating disorders, particularly among girls and those with increasing body mass index.

SourceJAMA Network·JournalJAMA Pediatrics·DateFeb 20, 2023

Geckos know their own odor

Researchers at the University of Bern discovered that geckos can detect and distinguish their own skin chemicals from those of other geckos, revealing a new level of social complexity in these animals. This finding suggests that geckos are more intelligent than previously thought, using pheromones for communication and self-recognition.

SourceUniversity of Bern·JournalAnimal Cognition·DateFeb 20, 2023

Uncovering the traits of Japan’s dual ancestry

A new statistical analysis tool has uncovered the distribution and intermixing of Jomon hunter-gatherers and East Asian immigrant farmers in Japan. The study found that regions with higher Jomon ancestry are more prone to obesity, while those with higher East Asian ancestry are more susceptible to exacerbated asthma.

SourceUniversity of Tokyo·JournaliScience·TypeData/statistical analysis·DateFeb 20, 2023

Atoms slow down more within colder blackbody radiation

Atoms encounter high frictional forces when moving towards blackbody radiation at lower temperatures, a phenomenon known as blackbody friction force (BBFF). This effect is particularly strong at lower temperatures and could impact atomic clocks, interferometers, and other high-precision experiments.

SourceSpringer·JournalThe European Physical Journal D·DateFeb 20, 2023

Leading addiction researchers denounce Australia’s NHMRC statement on e-cigarettes

Leading addiction scientists criticize Australia's National Health and Medical Research Council (NHMRC) for its 2022 statement on e-cigarettes, which they say selectively cites evidence and relies on flawed analysis. The critique argues that the NHMRC statement confuses association with causation and adopts a double standard.

SourceSociety for the Study of Addiction·JournalAddiction·TypeCommentary/editorial·DateFeb 20, 2023

Rising silicon-rich snow in the Earth's outer core

A team of scientists from Arizona State University predicts that silicon-rich crystals will rise in the Earth's outer core, forming 'snow' that can affect seismic velocity anomalies. The research, published in Nature, uses a new method to simulate high-pressure and high-temperature conditions expected for the core.

SourceArizona State University·JournalNature·TypeExperimental study·DateFeb 20, 2023