Researchers investigated brain mechanisms that maintain balance between intimidation and physical aggression in mice. Projections from the lateral hypothalamus to the dorsal raphe nucleus play a critical role in preserving this balance. Increasing pathway activity led to increased attacks, while inhibiting it decreased attack bites.
Demographic changes are linked to increased household energy requirements, CO2 emissions, and financial burdens in Japan and the UK. Older single-person households have higher energy use and costs due to greater heating and cooling needs.
A new magnetic measurement system can reproduce the actual operating environment of next-generation power electronics devices by capturing complete M-H loops up to saturation. The system enables quantitative measurements under high-frequency (MHz-band) and high-field conditions, closely matching real device operation.
A biologically inspired event camera measures vibrations accurately without expensive equipment, providing a cost-effective alternative to laser-based systems. The camera captures high-speed vibrations by recording brightness changes independently at each pixel, enabling precise amplitude, phase, and frequency estimation.
The implementation of Japan's indoor smoke-free laws resulted in a modest increase in smoke-free establishments, with a 5.7% nationwide increase and 13.5% in areas with stricter ordinances. Despite this, a substantial number of establishments still permit indoor smoking due to exemptions under the current legislation.
Research reveals carbon monoxide poisoning from waterpipe smoking can occur after brief use, outdoor smoking, or secondhand exposure. The study identified 68 cases of acute CO poisoning, including 13 cases of polycythemia, a chronic condition caused by prolonged exposure to carbon monoxide.
Multicultural intergroup dialogue improves holistic support for international students at Japanese universities. The approach, based on Intergroup Dialogue, promotes equitable and inclusive university environments, where students from diverse backgrounds interact and learn with one another.
A sea urchin single-cell RNA-seq atlas reveals dynamic changes in cell states during neural differentiation. The study provides an accessible platform for exploring gene expression patterns, enabling detailed analysis of neurogenic lineages and regulatory dynamics.
The study highlights the importance of personalized features in healthcare apps to promote physical activity. Key findings include the need for educational components, timely feedback, and tailored exercise suggestions to support users' daily routines and work demands.
A randomized study of 14 young adults found that sparkling water consumption reduced subjective fatigue and improved executive function while playing virtual soccer for three hours. Players who drank sparkling water also committed fewer fouls and had better game enjoyment compared to those drinking plain water.
Researchers used UAV-LiDAR technology to measure deposits on abandoned mountain roads, estimating decadal-scale debris supply. The study found that debris supply increases with steeper slope angles and larger contributing areas, posing a risk for debris flows.
Researchers have developed a new type of solid-state magnesium-air rechargeable battery using nitrogen-doped porous graphene as the cathode. The battery exhibits superior performance and safety compared to traditional systems, with improved chloride resistance and high catalytic activity.
This study assesses the educational impact of introducing interest-matched examples in data science education, showing a positive effect on students' motivation and understanding. The findings suggest that instructional approaches grounded in intrinsic motivation theory can improve data science education quality.
Researchers developed a framework to predict acoustic streaming in mid-air phased arrays, revealing its influence on tactile perception and object stability. The study validates thermoviscous and atmospheric attenuation models, enabling precise sound-field design for safer ultrasonic interfaces.
Researchers discovered a short amino acid motif in NIN that confers broader DNA binding specificity, essential for rhizobial infection and nitrogen fixation. This finding suggests NIN evolved by co-opting preexisting molecular features of ancestral NLP transcription factors.
A massive Kamchatka earthquake with a magnitude of 8.8-8.9 struck off the peninsula in 2025, rupturing nearly the same region as a 1952 M9-class earthquake. The study estimated fault slip reached 9-12 m across a broad area, substantially exceeding the accumulated slip deficit since 1952.
A study examines how human-AI coexistence is represented in fictional works, revealing varying roles and degrees of autonomy. The findings propose a theoretical model conceptualizing AI as an entity forming relationships with humans.
A high-radiation-tolerance GaN detector was fabricated to enable real-time two-dimensional position detection of individual alpha particles and xenon heavy ions. The detector exhibited stable operation at radiation levels significantly higher than those tolerated by conventional Si-based detectors.
A longitudinal study has identified key physical performance indicators that contribute to severe knee injuries in rugby players. The analysis found associations between direct contact injuries and greater severity and burden, as well as a high limb symmetry index for hip internal rotation strength and hip extension strength.
Apusomonads display a clear avoidance response to blue light by asymmetrizing their posterior flagellum and contracting their cell body. This primitive mechanism provides clues to the evolution of high-speed flagellar movements in opisthokonts.
Researchers identified two fundamental coordination patterns in underwater dolphin kick, accounting for over 99% of movement across performance levels. Faster swimmers exhibited greater shoulder extension and increased lower trunk movement, enabling reduced water resistance and improved propulsion.
Research reveals that Sulf1 is essential for both reward-dependent and aversion learning, highlighting its critical role in adult brain function. The enzyme acts through distinct dopamine D1 and D2 receptor pathways, underscoring its importance in neural circuits involved in learning.
Researchers at University of Tsukuba discovered a regulatory small RNA, AdiZ, that directly negatively regulates genes involved in glucose uptake and glycolysis. This induction facilitates Salmonella's survival within macrophages by coupling acid resistance to metabolic reprogramming.
The Japanese version of the rPATD questionnaire has been validated to assess attitudes towards medication reductions among older adults and their caregivers in Japan. The tool is reliable, valid, and easily understood, facilitating shared decision-making between healthcare providers and patients.
A cellulose-based composite sheet can simultaneously adsorb and shield radioactive elements like cesium, iodine, and strontium. The resulting composite demonstrates its potential for controlling environmental contamination.
Researchers studied unique clouds around Mount Fuji, classifying them into subtypes and determining occurrence frequencies. Tsurushi clouds were generated by mountain waves, while Hata clouds displayed different seasonal patterns, indicating a distinct cloud category.
Researchers analyzed medical records of 1,269 elderly patients with advanced cancer to find that over 70% were prescribed potentially inappropriate medications (PIMs), which declined closer to death. PIM discontinuation was more common among female patients, those with polypharmacy, and palliative care unit admissions.
Dog owners experienced a decline in physical activity during the COVID-19 pandemic but returned to pre-pandemic levels. Non-dog owners showed no significant changes. Before the pandemic, dog ownership was associated with high exercise self-efficacy, predicting greater physical activity.
Researchers developed an AI-based system that accurately detects whip sounds in horse racing, achieving detection rates of up to 70% in audio data. The system's ability to process audio in real-time and its reliance on high-frequency components make it a promising tool for improving animal welfare and fair competition.
Researchers identified 48 OR genes, 2 V1R genes, and 135 V2R genes in hagfish, indicating functional roles in smell perception. The discovery overturns the assumption that true V2Rs evolved only in jawed vertebrates.
The Chinese hwamei, an invasive alien bird species, has expanded into Japan's mountainous regions, including alpine zones. The study found that it breeds in these areas during the summer and migrates to lower elevations in winter.
A study of 198 male rugby players found that injuries caused by indirect contact had a high incidence and burden, while tackle direction was associated with injury severity. The insights gained can guide targeted prevention programs for knee injuries in rugby.
Researchers used long-read sequencing to analyze the nuclear genome of Amorphochlora amoebiformis, revealing an extremely high proportion of introns (74%) compared to other eukaryotic genomes. The study provides important insights into the evolutionary dynamics and potential functional roles of introns in eukaryotic genomes.
Researchers discovered cerebellar signals strengthen visual cues during learning, facilitating precise visuomotor associations. This finding highlights the cerebellum's crucial role in cognitive functions beyond motor control.
Researchers developed a genetically informed dynamic species distribution model to reconstruct the distributional history of wild Piper nigrum from 21,000 years ago. The model identified glacial refugia and patterns of range contraction, expansion, and fragmentation following the Last Glacial Maximum.
The University of Tsukuba developed a Japanese version of WHO indicators to assess inclusive social participation of persons with disabilities. The indicators were validated through an online survey among persons with and without disabilities, demonstrating strong internal consistency and construct validity.
A study analyzed large-scale human ChIP-seq data to identify unmeasured transcription factor-tissue/cell type pairs, revealing significant gaps in current knowledge. These findings indicate that essential regulatory mechanisms may have been overlooked, emphasizing the need for strategic prioritization of measurement targets.
This study investigates how environmental variability and human migration influence the evolution of cooperation among humans. Simulation results reveal that cooperation is more likely to evolve when these factors are sufficiently high, hindering non-cooperative groups and encouraging cooperative groups.
Strong EAWM enhances upward heat fluxes, cooling sea surface temperatures south of Japan, modifying storm-track activity and intensifying the monsoon. A feedback loop emerges: cold air cools the ocean, reinforcing the monsoon.
Scientists found a cluster of non-visual, light-sensitive neurons in sea urchin larvae, similar to the vertebrate brain, and discovered that disrupting these neurons impairs light-dependent swimming behavior.
A multinational study found PSC prevalence among Asian IBD patients to be markedly lower than in Western countries, associated with more favorable clinical outcomes. The proportion of asymptomatic PSC cases has increased due to improved imaging modality detection, allowing for early-stage diagnosis and reduced liver transplantation rates.
High-resolution label-free imaging reveals stable organelle dynamics and spatial organization, overcoming phototoxicity and halo artifacts. ExAPC microscopy captures biomolecular condensate-like structures and cellular responses to drugs.
Japanese primary care physicians derive a sense of meaning from managing diverse health problems, fostering rapport through continuous care, and collaborating with other healthcare professionals. These experiences promote professional growth and contribute to broader societal goals, building fulfilling careers.
The study analyzed eye movement data to predict processing effort and found that word and sentence length are effective predictors of text readability among English learners. This approach provides valuable insights for selecting reading materials and developing reading tests.
A study by University of Tsukuba researchers found that a cartoon-based diabetes education was comparable to traditional lectures in improving children's knowledge and physical activity levels. The manga-focused approach showed higher psychological satisfaction among participants, leading to improved test scores and physical activities.
Researchers developed a machine learning technique to analyze plasma emission spectra, accurately identifying valence states and predicting film growth rates. This method uses full-wavelength information and can be used for real-time film deposition control technology.
Research on 1,000 older Japanese adults found that declining hand function significantly increases the risk of requiring long-term care. Hand function below a certain threshold was associated with an increased risk, highlighting its importance for daily activities and overall health.
Researchers at the University of Tsukuba identified a peptide hormone called Capa that regulates calcium levels in fruit flies. The study found that Capa is secreted by specific neurons and acts on organs similar to vertebrate kidneys to mobilize calcium from stored reserves.
Researchers found 'roof drainage' to be the main cause of radioactive cesium flow, with baseflow varying by air temperature. The study provides insights for improving monitoring systems and environmental management.
Scientists have successfully measured ultrafast electric fields using a diamond nonlinear probe, achieving femtosecond temporal and nanometer spatial resolution. This breakthrough enables the detection of local electric field dynamics near surfaces with unprecedented precision.