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Science News Archive December 2023 - Page 24


Page 24 of 29

Greenhouse gases in oceans are altered by climate change impact on microbes – an Incheon National University study

Researchers from Incheon National University found that climate change impacts prokaryotes in oceans, altering methane and nitrous oxide cycles. This study highlights the need for policies to reduce ocean acidification and warming to stabilize vital microbial communities and greenhouse gas cycles.

SourceIncheon National University·JournalMarine Pollution Bulletin·TypeExperimental study·DateDec 6, 2023

A reflective display based on electro-microfluidic assembly of particles within suppressed water-in-oil droplet array

Researchers developed an innovative reflective display method using electro-microfluidic assembly of particles, enabling multicolored displays with high reversibility and viewing angles. The technique offers advantages in fabrication, response speed, and color performance, making it a promising candidate for green display technology.

Repeated blast exposures may harm the brain health of military personnel

A study found increased brain inflammation and structural changes in special operations personnel exposed to blasts, potentially increasing the risk of long-term brain-related disease. The research suggests that repetitive exposure to low-level blasts may cause brain injuries and highlights the need for better protective measures.

SourceUniversity of Virginia Health System·JournalJournal of Neurotrauma·TypeRandomized controlled/clinical trial·DateDec 6, 2023

Can brain stimulation benefit individuals with schizophrenia?

Researchers found that repetitive transcranial magnetic stimulation (rTMS) improved event-based prospective memory in patients with schizophrenia, but not time-based prospective memory. The study suggests rTMS as a potential therapeutic option for prospective memory impairments in individuals with schizophrenia.

SourceWiley·JournalNeuropsychopharmacology Reports·DateDec 6, 2023

Plant diversity stabilizes soil temperature

Researchers found that high plant diversity acts as a buffer against fluctuations in soil temperature, protecting ecosystems and agricultural productivity. Plant diversity increased shading and organic carbon content, reducing heat conduction and stabilizing soil temperature.

SourceUniversität Leipzig·JournalNature Geoscience·TypeExperimental study·DateDec 6, 2023

New dark matter theory explains two puzzles in astrophysics

A new theory, self-interacting dark matter (SIDM), proposes that dark matter particles interact through a dark force, explaining high-density halos and low-density halos of ultra-diffuse galaxies. SIDM simulates cosmic structure formation with strong dark matter self-interactions, diversifying halo density in central regions.

SourceUniversity of California - Riverside·JournalThe Astrophysical Journal·TypeComputational simulation/modeling·DateDec 6, 2023

Novel dice loss functions for improved image segmentation

Novel Dice loss functions, t-vMF Dice loss and Adaptive t-vMF Dice loss, have been developed to improve image segmentation accuracy in medical images. These new functions outperform conventional formulations and show great potential for critical fields like medical imaging and diagnosis.

SourceMeijo University·JournalComputers in Biology and Medicine·TypeImaging analysis·DateDec 6, 2023

Wood materials make for reliable organic solar cells

Scientists at Linköping University have created stable and environmentally friendly organic solar cells by incorporating untreated kraft lignin into the electron transport layer. This innovation improves the overall efficiency and reliability of organic solar cells, paving the way for a more sustainable future.

SourceLinköping University·JournalAdvanced Materials·DateDec 6, 2023

Do “forever chemicals” have “forever impacts”? Study suggests link between higher prenatal pfas exposures and offspring obesity risk in adolescence

A Harvard Pilgrim Health Care Institute study found a strong link between higher prenatal PFAS exposure and increased rates of obesity and body fat in adolescent offspring. Higher levels of certain PFAS were associated with a 13-59% increase in the risk of obesity, highlighting the long-term consequences of PFAS for developmental health.

SourceHarvard Pilgrim Health Care Institute·JournalEnvironmental Health Perspectives·DateDec 6, 2023

Fascicle gearing dynamics: Unveiling 3D rotation effects in muscle elongation

Researchers at Waseda University used diffusion tensor imaging to reconstruct fascicles in three dimensions, finding that a gearing mechanism reduces individual fascicle elongation during stretching. This mechanism allows muscles to extend without significant fiber length changes, preventing overstretching and injury.

SourceWaseda University·JournalMedicine & Science in Sports & Exercise·TypeExperimental study·DateDec 6, 2023

Light therapy may improve symptoms of Alzheimer’s disease

A meta-analysis of 15 randomized controlled trials found significant improvements in sleep efficiency and psycho-behavioral symptoms in patients with Alzheimer's disease. Light therapy also alleviated depression and reduced patient agitation and caregiver burden.

SourcePLOS·JournalPLOS ONE·TypeMeta-analysis·DateDec 6, 2023

Study reshapes understanding of mass extinction in Late Devonian era

Researchers have long debated the cause of the Late Devonian mass extinction event, with some attributing it to large-scale volcanic eruptions and others to a mass deoxygenation event caused by land plants. A new study now posits that both factors played a role, highlighting the environmental tipping points the planet faces today.

SourceIndiana University·JournalCommunications Earth & Environment·TypeComputational simulation/modeling·DateDec 6, 2023

HKUST elucidates how IGF2’s secretory pathway mediates muscle stem cell differentiation

A HKUST research team identified TMED10 as a protein that facilitates the secretion of insulin-like growth factor 2 (IGF2), which is crucial for muscle stem cell differentiation. The study provides valuable insights into the mechanisms underlying IGF2's functions and suggests potential therapeutic strategies to modulate its signaling.

SourceHong Kong University of Science and Technology·JournalProceedings of the National Academy of Sciences·TypeExperimental study·DateDec 6, 2023

From infamy to ingenuity

Researchers have uncovered the intricate molecular mechanism used by parasitic phytoplasma bacteria to manipulate plants. The discovery sheds light on a peculiar phenomenon in nature, where plants exhibit 'zombie-like' effects due to bacterial infection.

SourceJohn Innes Centre·JournalProceedings of the National Academy of Sciences·TypeExperimental study·DateDec 5, 2023

Photoswitchable bactericide

Researchers have developed a photoswitchable bactericide that can target either Gram-positive or Gram-negative bacteria using a light-driven 'switch'. The nanomaterial was shown to be effective in healing MRSA-infected wounds in mice models, offering a potential new solution to combat antibiotic-resistant infections.

SourceWiley·JournalAngewandte Chemie International Edition·TypeExperimental study·DateDec 5, 2023

Insights on the formation of polar ice clouds

Marine bacteria and atmospheric rivers play a crucial role in forming ice clouds at higher-than-expected temperatures over the Southern Ocean. The findings from this study provide key information for improving numerical models of ice cloud formation, which can help better predict climate conditions in vulnerable polar regions.

SourceResearch Organization of Information and Systems·JournalGeophysical Research Letters·TypeComputational simulation/modeling·DateDec 5, 2023

Three decades of data in Bangladesh show elevated risk of infant mortality In flood-prone areas

A new study estimates that living in flood-prone areas in Bangladesh is associated with an excess risk of infant mortality of 5.3 additional deaths per 1,000 births. The study found that children born during rainy months face a higher risk of death than those born in dry months.

SourceUniversity of California - San Diego·JournalProceedings of the National Academy of Sciences·TypeData/statistical analysis·DateDec 5, 2023

From excitement to disillusionment – new research identifies 4 emotional stages of professional careers

A new study identifies four distinct emotional stages in professional careers, from initial excitement and anticipation to pride and joy and finally disillusionment and disappointment. The research highlights the importance of considering emotions and coping skills in career progression.

SourceUniversity of Bath·JournalHuman Resource Management Journal·TypeObservational study·DateDec 5, 2023

Mice pass the mirror test, a classic indicator of self-recognition

Researchers found that mice require significant external sensory cues to recognize changes in their reflection and can detect visual differences, but not tactile ones. The study identified a subset of neurons involved in developing self-image, highlighting the neural mechanisms behind self-recognition in mice.

SourceCell Press·JournalNeuron·TypeExperimental study·DateDec 5, 2023

Cell-type-specific genetic risk contributes to distinct stages of Alzheimer’s disease progression

Researchers identified cell-type-specific genetic risk scores associated with distinct stages of Alzheimer's disease progression, including amyloid-β accumulation and tau tangle formation. Astrocyte-specific risk contributed to earlier stages, while microglia-specific risk played a role in later phases.

SourceBrigham and Women's Hospital·JournalNature Communications·TypeObservational study·DateDec 5, 2023