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Science News Archive 2024 - Page 213


Page 213 of 484

An effective strategy to inhibit grain coarsening: Construction of multi-element co-segregated grain boundary complexion

Researchers have developed a method to prevent grain coarsening in ceramics by creating complexions with multiple dopants co-segregated at the grain boundaries. The study shows that this approach can significantly reduce grain growth rates, but may also lead to liquid phase sintering if not optimized.

SourceTsinghua University Press·JournalJournal of Advanced Ceramics·DateJul 25, 2024

65 million Americans now own firearms for protection, suggests survey

The study found that 79% of gun owners cited protection as the primary reason for owning a firearm, with increasing numbers of women and minority ethnic backgrounds citing this reason. Gun ownership has become predominantly motivated by protection, appealing to demographics beyond traditional firearm owners.

SourceBMJ Group·JournalInjury Prevention·TypeObservational study·DateJul 25, 2024

Bilateral mastectomy and breast cancer mortality

Women with bilateral mastectomy have a greatly diminished risk of contralateral breast cancer, yet experience similar mortality rates as patients treated with lumpectomy or unilateral mastectomy. The study highlights the importance of considering long-term risks and benefits in breast cancer treatment decisions.

SourceJAMA Network·JournalJAMA Oncology·DateJul 25, 2024

Fresh light on the path to net zero

Researchers from UNSW used magnetic fields to study singlet fission, a process that breaks light particles into smaller chunks, increasing efficiency. The study could lead to improved silicon solar cell technologies, potentially achieving over 30% efficiency and reducing energy costs.

SourceUniversity of New South Wales·JournalNature Chemistry·DateJul 25, 2024

Does fertility affect a woman’s body odor?

Researchers analyzed underarm odour samples from 29 women over a menstrual cycle, finding no evidence that men prefer fertile days. Chemical analysis also showed no correlation between odour composition and fertility status.

SourceUniversität Leipzig·JournalProceedings of the Royal Society B Biological Sciences·TypeExperimental study·DateJul 25, 2024

Unlocking new potential in solar tech: dimethyl acridine enhances perovskite solar cells

Researchers have developed a novel dimethyl acridine-based self-assembled monolayer (SAM) that improves the efficiency and stability of perovskite solar cells. The new SAM, called 2PADmA, enhances carrier transport, passivates defects, and reduces nonradiative recombination, leading to a power conversion efficiency (PCE) of 24.01%.

SourceTsinghua University Press·JournalEnergy Materials and Devices·DateJul 25, 2024

Use of flurbiprofen ester in 4-dimensional hysterosalpingography: does flurbiprofen ester relieve pain during an infertility evaluation?

A new study found that flurbiprofen ester injection via continuous intravenous drip significantly relieved pain during transvaginal 4-dimensional hysterosalpingography (TVS 4D-HyCoSy) for infertility patients. The use of flurbiprofen ester also reduced the incidence of adverse reactions during the contrast examination.

SourceCompuscript Ltd·JournalBIO Integration·DateJul 25, 2024

Important region of marine ecosystem in Southwest Atlantic is shallower than expected, study finds

A new study has determined the vertical limits of the marine environment in the Southwest Atlantic, revealing that the mesophotic zone extends to a depth of between 15m and 18m. The research found distinct differences in fish diversity and species composition between the shallow and mesophotic zones.

SourceFundação de Amparo à Pesquisa do Estado de São Paulo·JournalMarine Environmental Research·DateJul 25, 2024

World Hepatitis Day 2024: Madrid study shows decrease in active hepatitis C infection among risk groups, indicating effectiveness of public health measures

A Madrid study found a significant decrease in active hepatitis C infection among people who use drugs (PWUD) from 23% to 6% between 2017 and 2023. The study attributed this decline to improved access to testing and treatment, as well as public health campaigns.

SourceEuropean Centre for Disease Prevention and Control (ECDC)·JournalEurosurveillance·TypeObservational study·DateJul 25, 2024

Researchers discover faster, more energy-efficient way to manufacture an industrially important chemical

Researchers at Argonne National Laboratory have developed a faster and more energy-efficient way to manufacture propylene, a key chemical in producing polypropylene. The new process uses zirconium combined with silicon nitride, yielding higher catalytic activity and lower operating temperatures.

SourceDOE/Argonne National Laboratory·JournalJournal of the American Chemical Society·DateJul 24, 2024

How can intelligent technology and scenario-based operations transform urban neighborhoods into smart, future-ready environments?

This article proposes a pathway for creating smart neighborhoods by integrating intelligent technology with scenario-based operations. It explores how this approach can improve the design, construction, and operation of future urban neighborhoods, providing a reference for China's smart neighborhood construction.

SourceHigher Education Press·JournalLandscape Architecture Frontiers·TypeCase study·DateJul 24, 2024

George Mason University researchers lead breakthrough study to find functional cure for HIV

Researchers at George Mason University's Center for Infectious Disease Research have made a breakthrough in finding a functional cure for HIV. Using an HIV-like virus particle called HIV Rev-dependent lentiviral vector, the team was able to reduce viral reservoirs and boost the immune system to produce antiviral neutralizing antibodies.

SourceGeorge Mason University·JournalGene Therapy·TypeExperimental study·DateJul 24, 2024

Nanoscale device simultaneously steers and shifts frequency of optical light, pointing the way to future wireless communication channels

Researchers have developed a metasurface that can reflect light at multiple frequencies, enabling faster wireless communication channels. The device operates in reflection mode at optical frequencies, offering thousands of times more bandwidth than current Wi-Fi.

SourceCalifornia Institute of Technology·JournalNature Nanotechnology·TypeExperimental study·DateJul 24, 2024

Older adults want to cut back on medication, but study shows need for caution

A new University of Michigan study found that over 82% of Americans aged 50-80 take one or more prescription medications, with 80% open to stopping certain drugs. However, researchers stress the importance of personalized guidance for deprescribing older adults, particularly those taking medication for cardiovascular disease or diabetes.

SourceMichigan Medicine - University of Michigan·JournalJournal of General Internal Medicine·TypeSurvey·DateJul 24, 2024

New study finds alarming rise in persistent ‘forever chemicals’ in pesticides

A comprehensive study reveals that per- and polyfluoroalkyl substances (PFAS) are increasingly added to US pesticide products, contaminating waterways and posing potential threats to human health. The study found that pesticides containing PFAS are widely used in staple foods, flea treatments for pets, and insect-killing sprays.

SourceEnvironmental Working Group·JournalEnvironmental Health Perspectives·TypeContent analysis·DateJul 24, 2024

Advanced printing crafts precision scaffolds for tissue regeneration

Researchers developed core-shell microfibrous scaffolds that excel in rotator cuff repair, restoring natural morphology and mechanical properties. The acellular, in situ tissue engineering technology harnesses stem cell regenerative abilities to provide robust biological regeneration without cell seeding.

SourceInternational Journal of Extreme Manufacturing·JournalInternational Journal of Extreme Manufacturing·DateJul 24, 2024

Researchers highlight ChatGPT’s role in bioinformatics and biomedical informatics

ChatGPT has shown impressive capabilities in tasks related to knowledge-mining and text-generation, but exhibited limitations in quantitative analysis and reasoning. The researchers emphasize the importance of human expert augmentation and efficient prompt engineering to minimize hallucination and improve response accuracy.

SourceHigher Education Press·JournalQuantitative Biology·TypeExperimental study·DateJul 24, 2024

A brittle interface with low modulus to improve the mechanical properties of multiphase ceramics: A unique design approach?

Researchers at Northwestern Polytechnical University developed a new design approach for low-modulus brittle interfaces in multiphase ceramics, improving their strength and toughness. The optimized ceramics exhibit significant enhancements in flexural strength and fracture toughness compared to non-optimized counterparts.

SourceTsinghua University Press·JournalJournal of Advanced Ceramics·DateJul 24, 2024