Japan

Bacteria in the digestive system may work to maintain balance directly and indirectly

Researchers at Tohoku University unveil a cool new technique that can visualize both the structure and elemental distribution of nanomaterials in frozen solvents.

A collaborative research team from Kanazawa University, the Indian Institute of Technology Hyderabad, and the University of Strathclyde has developed a novel method for forming high-performance high-entropy alloy (HEA) films on various surfaces—without the need for costly alloy targets. By using a proprietary rotating target composed of multiple pure metal segments and pulsed laser deposition (PLD) technology, the team successfully demonstrated a cost-effective and versatile approach to HEA film fabrication.

How mHealth app incentives drive health and transit in Japan’s Senboku New Town

A group of researchers led by The University of Osaka have identified a novel genetic mutation in Streptococcus pyogenes, a common bacterium which causes strep throat, significantly associated with severe invasive infections. A single mutation in the bacterial ferric ion transporter enhances bacterial growth in human blood. This mutation, unique to Japanese isolates, indicates a novel pathogenic mechanism. This world-first discovery offers a potential new target for treatments and preventive measures.

Researchers from The University of Osaka have used a miniature heater positioned over a nano-sized opening to gently unzip DNA’s double helix into a single strand for quick, efficient analysis. The device enables detection of longer DNA strands than before while using less power and improving accuracy. The technology could be used in handheld medical devices, helping doctors to diagnose disease and tailor treatments based on patients’ genes.

Researchers are one step closer to finding a common target for treating ALS - a fatal neurodegenerative disease that causes progressive muscle weakness.

For the first time, researchers at Institute of Industrial Science, The University of Tokyo, quickly and efficiently measure the seafloor down to the centimeter-level using an unmanned aerial vehicle

Researchers at The University of Osaka developed a deep learning model for rapid building damage assessment after floods using satellite imagery. This research establishes the first systematic benchmark for this task and introduces a novel semi-supervised learning method achieving 74% of fully supervised performance with just 10% of the labeled data. A new, lightweight deep learning model named Simple Prior Attention Disaster Assessment Net or SPADANet significantly reduces missed damaged buildings, improving recall by over 9% compared to existing models. This work provides crucial design principles for future AI disaster response, enabling faster and more efficient life-saving operations.

A joint international research team has, for the first time, unveiled the crucial link between the structure of the solid electrolyte interphase (SEI) and the efficiency of lithium-mediated nitrogen reduction to ammonia, a promising eco-friendly approach to fertilizer production. Using in situ spectroscopy, the team directly observed the previously poorly understood SEI formation process, revealing that the ethanol-to-water ratio in the electrolyte significantly impacts ammonia conversion efficiency. This discovery opens a new avenue for sustainable fertilizer production by reducing reliance on fossil fuels and lowering greenhouse gas emissions.

Researchers at The University of Osaka have developed a new program, “postw90-spin,” that enables high-precision calculations of a novel performance indicator for the spin Hall effect, a phenomenon crucial for developing energy-efficient and high-speed next-generation magnetic memory devices. This breakthrough addresses a long-standing challenge in spintronics research by providing a definitive measure of the spin Hall effect, overcoming ambiguities associated with traditional metrics.

As Japanese society increasingly gets global, a new study finds that its education system has not kept pace. Students with foreign roots face cultural and linguistic hurdles in schools that still operate on assumptions of homogeneity. Findings suggest a lack of teacher training on multiculturalism is contributing to isolation and missed learning opportunities for these students.

A team from The University of Osaka found that the intestinal flora works together with the OTUD3 and STING genes to aggravate ulcerative colitis, a disease with no cure that causes major intestinal pain and bloody diarrhea. When the OTUD3 gene is mutated, microbes in the intestinal flora trigger STING signalingOTUD, leading to inflammation in the colon. The intestinal flora and STING signaling may be important new targets for ulcerative colitis treatment.

When fermented with plant-derived bacteria, stevia leaf extract is toxic to pancreatic cancer cells but not to healthy kidney cells

Identification and characterization of a novel tRNA modification enzyme in the hyperthermophilic archaeon Thermococcus kodakarensis

Researchers have created an alloy that maintains its special ability to act as a sort of temperature-activated memory foam at temperatures as low as -200°C – making it highly suitable for space equipment.

A study by The University of Osaka and the National Institute for Environmental Studies aimed to understand how different rewards influence citizen contributions to biodiversity data. Using the Biome app, 830 users joined a one-week experiment offering either cash, donation-based, or no incentives for posting nature photos. Cash increased total posts, while donations encouraged sharing of rare species. The study reveals how tailoring incentives can improve both the quantity and quality of biodiversity data collected through citizen science.

Rabi-like splitting is one of the key concepts in modern quantum technology. Fully understanding it can help us advance our knowledge in quantum information processing.

Researchers from The University of Osaka have developed a mathematical model for Volterra defects using differential geometry to analyze the relationships between different types of defects. Their work provides insight into the connections between edge dislocations and wedge disclinations and extends traditional theories in material science. Their results may help to explain the unusual mechanical properties of crystals so they can be used to design new materials.

A groundbreaking new method developed at The University of Osaka calculates the entropy of liquids using a non-empirical approach, requiring only the atomic species as input. This revolutionary technique eliminates the need for extensive experimental data, paving the way for enhanced predictions of chemical reactions and optimization of industrial applications involving liquids.

Protein aggregation inhibitor shows lower levels of cell death and paralysis in mice with acute strokes

Researchers at The University of Osaka have developed a novel method for generating ultrahigh magnetic fields via laser-driven implosions of blade-structured microtubes. This method achieves field strengths approaching one megatesla—a breakthrough in compact, high-field plasma science.

In a significant step towards a carbon-neutral future, researchers developed an atomically precise copper nanocluster that demonstrates high stability and exceptional selectivity in electrochemical carbon dioxide reduction reactions.

Researchers at The University of Osaka have developed a novel framework for measuring occupancy in open-plan offices with unprecedented precision. This innovative system uses computer vision and AI to analyze occupancy at a micro-scale level, focusing on specific functional zones within the office. This addresses a significant gap in current occupancy tracking methods, which typically only provide macro-level data and struggle to capture detailed usage patterns within shared spaces.

As the days grow shorter, many animals prepare for the approaching winter by suspending reproduction. Insects, for example, accumulate energy stores while halting ovarian development through a process known as reproductive diapause. In a recent study published in The Journal of Experimental Biology, researchers at The University of Osaka uncovered a key neuroendocrine pathway underlying this seasonal shift in the bean bug Riptortus pedestris, identifying the neuropeptide corazonin as a molecular signal that suppresses reproduction in response to changes in day length.

By just sprinkling it on top and waiting 10 seconds, researchers can use this new fluorescent probe to clearly show synapses, the connection points between brain cells.

Researchers from The University of Osaka have identified key genetic mutations linked to extracranial arteriovenous malformations (AVMs), a rare and potentially serious vascular disorder. They have revealed that these mutations activate the RAS/RAF/MEK signaling pathway and that the MAP4K4 gene may drive pathological angiogenesis. This may mean that existing cancer drugs that target the same pathway could be effective for AVM treatment, potentially paving the way for novel therapies.

Nonlinear quantum dynamics are complicated, but they don’t have to be. A new, real-time simulation may help demystify these unusual dynamics, serving as a guide to develop next-gen quantum devices.

Researchers from The University of Osaka found that a one-time genome editing treatment introducing a gene encoding the glucagon-like peptide-1 receptor agonist Exendin-4, marketed as the weight-loss drug Exenatide, results in sustained secretion of the drug, reduced food intake, and enhanced weight loss in mice. This in vivo genome editing approach provides a potential strategy for treating complex diseases without defined genetic causes, such as heart disease and autoimmune disorders, without the need for frequent medication.

Spatial and seasonal variations of polychlorinated biphenyl (CB-153) in the Seto Inland Sea and its response to declines in atmospheric and riverine input