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Science News Archive September 2021 - Page 5


Page 5 of 40

An ancient disaster

Researchers have found conclusive evidence that a massive cosmic airburst destroyed the biblical city of Tall el-Hammam in the Jordan Valley around 3600 years ago. The impact, which is believed to be equivalent to a 12-megaton explosion, was characterized by temperatures exceeding 2,000°C and the formation of melted metals and glass.

SourceUniversity of California - Santa Barbara·JournalScientific Reports·TypeObservational study·DateSep 28, 2021

Seven symptoms jointly predict COVID-19 diagnosis

Researchers developed a model using data from over 1.1 million volunteers to identify the 7 most informative symptoms for COVID-19 test allocation. The model predicted PCR positivity with high accuracy, resulting in potential 30% to 40% increase in eligible individuals and 70% to 75% detection of positive cases.

SourcePLOS·JournalPLOS Medicine·TypeObservational study·DateSep 28, 2021

‘Research autopsy’ helps scientists study why certain cancer therapies stop working

A new study at Ohio State University's Comprehensive Cancer Center is using rapid autopsies to gather biological samples after death to better understand how cancer cells overcome different treatments. This approach has already led to novel findings about drug resistance mechanisms, including the recent approval of a targeted therapy f...

SourceOhio State University Wexner Medical Center·JournalThe Lancet Gastroenterology & Hepatology·TypeExperimental study·DateSep 28, 2021

Unbreakable glass inspired by seashells

McGill University scientists created a new glass and acrylic composite material mimicking nacre for exceptional strength and durability. The material is three times stronger and five times more fracture-resistant than regular glass, with potential applications in phone screens and other industries.

SourceMcGill University·JournalScience·TypeExperimental study·DateSep 28, 2021

Study highlights the importance of heart health for preventing diabetes

A new study found that maintaining healthy lifestyle habits and having a healthy body weight can significantly lower the lifetime risk of type 2 diabetes in middle-aged adults. The research included over 5,993 participants and analyzed the relationship between cardiovascular health and genetic predisposition to type 2 diabetes.

SourceEuropean Society of Cardiology·JournalEuropean Journal of Preventive Cardiology·DateSep 28, 2021

The changing occupation landscape: How automation affects workers health and mortality

A study found that individuals in occupations with high routine intensity are at risk of becoming unemployed, experiencing higher disability rates, and facing increased mortality. The research highlights the need for governments to assess opportunities for retraining and provide economic support to affected workers.

SourceColumbia University's Mailman School of Public Health·JournalOccupational and Environmental Medicine·DateSep 28, 2021

UNLV research bolsters link between diabetes and Alzheimer’s disease

A study published in Communications Biology reveals that chronic hyperglycemia in diabetes impairs working memory performance by altering the connection between key brain regions. Researchers found that areas critical for forming and retrieving memories were over-connected, leading to errors in remembering correct information.

SourceUniversity of Nevada, Las Vegas·JournalCommunications Biology·TypeExperimental study·DateSep 28, 2021

3D mapping of post-infarction scarring increases the prognostic potential of cardiac magnetic resonance imaging

A multidisciplinary team developed a method for identifying 3-dimensional features of scar tissue after myocardial infarction, enhancing cardiac magnetic resonance imaging's prognostic potential. The new method reveals significant correlation between low scar transmurality and ventricular tachycardia episodes, improving clinical practice.

SourceCentro Nacional de Investigaciones Cardiovasculares Carlos III (F.S.P.)·JournalScientific Reports·TypeExperimental study·DateSep 28, 2021

Decision Science Digest: Highlights of peer-reviewed research published in INFORMS journals

Recent INFORMS journal research highlights the use of predictive modeling to forecast wildfire risks and optimize firefighting equipment placement. Additionally, studies investigate strategies to reduce cardiac stenting overuse and improve electric mobility service costs through optimized fleet rebalancing.

SourceInstitute for Operations Research and the Management Sciences·JournalINFORMS Journal on Applied Analytics·DateSep 28, 2021

Glyscend Therapeutics announces initiation of phase 1 clinical trial on the heels of preclinical data presented at EASD 2021 on the metabolic benefits of its oral polymer-based duodenal exclusion therapy

Glyscend Therapeutics has initiated a phase 1 clinical trial in Australia investigating an oral polymer therapy that improves glucose homeostasis with weight loss in nonclinical models. The therapy targets mechanisms underlying bariatric surgery and aims to replicate its benefits without the need for surgery.

Managing teen sexting

A new study of 1328 South Australian high school students aged 13 and 14 found a relatively low proportion admitted to 'sexting' via various electronic mediums. The researchers suggest building a health safety education framework for adolescents to provide skills to navigate pornography as part of sexual education.

SourceFlinders University·JournalComputers in Human Behavior·TypeMeta-analysis·DateSep 28, 2021

Living retina achieves sensitivity and efficiency engineers can only dream about

The living retina achieves sensitivity and efficiency that human engineers can only dream about, with optimized mosaics of different sensitivities parsing 40 visual features. The retinas adapt to current conditions and conserve energy by tuning out noise, making them orders of magnitude less power-hungry than smartphone sensors.

SourceDuke University·JournalProceedings of the National Academy of Sciences·TypeData/statistical analysis·DateSep 28, 2021

Overcoming challenges to global child and adolescent health

A special issue of PLOS Medicine explores the social determinants of child and adolescent health, including poverty, pollution, and violence. The studies focus on the intersection of child health and challenging environments, highlighting urgent redirective strategies to achieve the UN Sustainable Development Goals.

SourcePLOS·JournalPLOS Medicine·TypeCommentary/editorial·DateSep 28, 2021

Tweaking Alloy Microchemistry For Flawless Metal 3D Printing

Researchers at Texas A t&M University have developed a method to create defect-free metal parts using laser powder bed fusion 3D printing. By combining machine learning and single-track experiments, they identified favorable alloy chemistries and process parameters to print parts with uniform properties at the microscale.

SourceTexas A&M University·JournalAdditive Manufacturing·TypeNews article·DateSep 28, 2021

Misuse of stimulants linked to other drug abuse

A recent study from the University of Georgia found that college students who misuse stimulant drugs are also likely to engage in heavy drinking and marijuana use. The research suggests a strong behavioral link among polysubstance users, highlighting the need for universities to be aware of the additive health effects of these behaviors.

SourceUniversity of Georgia·JournalJournal of American College Health·DateSep 28, 2021

Cleveland Clinic study suggests steroid nasal sprays may help improve outcomes in severe COVID-19 disease

A recent Cleveland Clinic study found that patients who use steroid nasal sprays are less likely to develop severe COVID-19-related disease, including lower risk of hospitalization, ICU admission, and mortality. The study showed a 20-25% reduction in these outcomes for patients using intranasal corticosteroids.

SourceCleveland Clinic·JournalJournal of Allergy and Clinical Immunology: In Practice·DateSep 28, 2021

In tightly controlled study, low-carb diet improves cardiometabolic risk profile

A new study published in the American Journal of Clinical Nutrition found that a low-carb diet with high saturated fat levels produced better cardiovascular and metabolic profiles than a low-fat diet. The low-carb diet improved blood lipid profiles, increased adiponectin, and reduced lipoprotein(a), a risk factor for heart disease.

SourceBoston Children's Hospital·JournalAmerican Journal of Clinical Nutrition·TypeRandomized controlled/clinical trial·DateSep 28, 2021

Deep dive into global Twitter posts reveals possible drop in negativity towards COVID-19 pandemic

Researchers analyzed over 120 million English-language tweets to find a decrease in negative posts about COVID-19, particularly in countries with high vaccination rates. The study suggests that increased vaccination may have contributed to the drop in negativity, but further analysis is needed to fully understand this phenomenon.

SourceFrontiers·JournalFrontiers in Psychology·TypeData/statistical analysis·DateSep 28, 2021

Magnetic stimulation of the brain can improve episodic memory

A PLOS study found that low-frequency magnetic stimulation can improve episodic memory by reducing beta-waves in the brain. The study, led by Mircea van der Plas and Simon Hanslmayr, used slow rTMS over the left prefrontal cortex to enhance verbal memory formation.

SourcePLOS·JournalPLOS Biology·TypeExperimental study·DateSep 28, 2021

The vicious circle of high academic achievement

A study of 604 Canadian teens found that high grades lead to higher perfectionism, which can result in anxiety, depression, and decreased motivation. Experts call for parents and educators to foster environments of self-acceptance and acknowledge successes, rather than pushing for perfection.

SourceUniversity of Ottawa·JournalInternational Journal of Behavioral Development·DateSep 28, 2021

Life expectancy gap between black and white Americans closes nearly 50% in 30 years

A study published in the Proceedings of the National Academy of Sciences found that life expectancy gaps between Black and white Americans have narrowed by nearly 50% over the past three decades. Improvements in healthcare access, safety-net programs, and reductions in mortality rates among Black Americans contributed to this decline.

SourcePrinceton School of Public and International Affairs·JournalProceedings of the National Academy of Sciences·TypeData/statistical analysis·DateSep 28, 2021

Study suggests R rate for tracking pandemic should be dropped in favour of ‘nowcasts’

A new study by University of Cambridge researchers proposes abandoning the R rate for tracking pandemics in favor of nowcasts, which forecast daily new cases and deaths based on growth rates. The Harvey-Kattuman model has already proved accurate and effective in predicting COVID-19 waves and spikes worldwide.

SourceUniversity of Cambridge·JournalJournal of The Royal Society Interface·TypeData/statistical analysis·DateSep 28, 2021

Using off-the-shelf technology, researchers at Kennedy Krieger Institute provide accessibility in diagnosing autism

A team of researchers at Kennedy Krieger Institute developed a new method to diagnose Autism Spectrum Disorder (ASD) using a single 2D camera. The Computer Assessment of Motor Imitation (CAMI) method provides greater access to patients and shows accurate assessment with 2D technology.

SourcePROFILES, Inc.·JournalResearch in Autism Spectrum Disorders·TypeExperimental study·DateSep 28, 2021