Researchers discovered nitrate reductase plays a crucial role in regulating nitrogen-responsive nodulation, balancing costs and benefits of symbiosis according to nitrogen availability. The enzyme maintains internal nitrate levels, preventing excessive nitrate accumulation and suppressing root nodule formation.
Researchers developed a system using a 3D time-of-flight camera to measure frozen skipjack tuna, capturing dense 3D point-cloud data for accurate body size and weight estimation. The combination of 3D imaging and machine learning analysis yielded accurate noncontact estimates of fish body weight.
Researchers developed an AI model combining physics and observations to reconstruct the Earth's mantle history. The model accurately recreated past temperatures and deep-mantle flow with high accuracy, indicating that combining complementary geophysical information is essential for recovering realistic mantle convection histories.
A new study sheds light on the diversity of ancient coastal ecosystems in Japan, revealing that iguanodontians of varying body sizes inhabited the coastal environments of East Asia. The fossil discovery provides valuable insights into the evolution and biogeography of these herbivorous dinosaurs.
A nationwide claims data analysis in Japan found breast cancer survivors have a 1.57-fold higher risk of herpes zoster and a 1.70-fold higher risk of postherpetic neuralgia. Vaccination can reduce both the incidence of herpes zoster and the risk of complications, emphasizing the importance of prevention in breast cancer survivorship care.
Researchers found that higher cardiorespiratory fitness is associated with a slower age-related decline in kidney function. The study of 198 adults with preserved kidney function found that maintaining cardiorespiratory fitness may help protect kidney health later in life.
Researchers developed a method to modify vehicle sounds using auditory augmented reality, which can draw pedestrian attention without loud warnings. By artificially increasing the frequency of approaching vehicle sounds, participants judged the vehicle as moving faster and closer.
Researchers found a variant in the thymic stromal lymphopoietin (TSLP) gene associated with EGPA susceptibility in both Japanese and European populations. Additionally, the HLA-DRB1*07:01 allele was linked to EGPA in Japanese individuals, but not in Europeans.
Researchers created microspheres with twisted-bipolar molecular configuration, enabling angle-selective optical resonance and laser oscillation. The resulting emissions mimic Saturn's rings, showcasing directional control of light in microscopic spaces.
Researchers found that live sporting events stimulate oxytocin dynamics, leading to increased heart-rate synchrony among casual spectators. This physiological response is linked to greater enjoyment, unity with players and spectators, immersion, and intention to reattend future events.
A new study reveals that Northern Eurasia's carbon sink is driven by climate change, with stronger sinks in western and southern regions. Forest productivity is a key determinant of the regional carbon sink, not just warming alone.
Researchers assessed ATT12's observational capabilities and found it could detect distant galaxies, identify dusty star-forming galaxies, and study galactic gas density. The telescope is planned for construction in Antarctica's dry conditions.
Tosyl groups act as a form of molecular code, enabling pseudorotaxane-like geometries and biased macrocyclization reactions. The number of tosyl units determines higher-order assembly behavior, including ring closure and polymeric chain formation.
Researchers found that when bedding strata incline above the topographic slope, rainwater infiltrates deep into the subsurface through fractures. In contrast, on dip slopes with aligned bedding direction, landslide landforms develop due to rapid runoff after rainfall events.
Researchers found that aged mice brains show increased micronuclei, which microglia internalize, leading to changes in morphology and gene expression. This process may contribute to age-associated inflammation and vascular dysfunction.
A new study found that prophylactic naldemedine is a cost-effective intervention for opioid-induced constipation in cancer patients. The analysis revealed an incremental cost-effectiveness ratio of 1,445,276 Japanese yen per QALY gained, which is below the official willingness-to-pay threshold of 5 million yen.
Researchers used numerical simulations and isotopic data to connect hot spring magmatic water to the subducting Pacific Plate. The study found that magmatic water from Kawayu Onsen in Japan closely matched isotopic values released from the Pacific Plate at a depth of 125 km.
The e-BOCCHI program, developed to address adolescent loneliness, showed statistically significant reductions in depressive symptoms. Participants demonstrated improvements in help-seeking skills compared to baseline, but modest improvements in loneliness and self-esteem scores.
Researchers used high-resolution topographic data to investigate landslide mechanisms. They found that soil thickness varies systematically with slope gradient, controlling depth and size of landslides. This study offers a foundation for hazard maps and risk assessments under climate change.
Researchers found that even morphologically similar pollinators can differ markedly in the diversity and heterospecificity of pollen they transport. This variation has important implications for understanding how different pollinators influence plant reproduction and evolution.
Researchers developed a unified theoretical framework for ultrasound wave propagation and energy dissipation in porous rock formations. The study identifies three distinct longitudinal-wave types with different physical origins, providing a basis for understanding and predicting ultrasonic wave behavior in multiphase porous media.
Researchers analyzed high-speed camera footage of skilled soccer players performing the scissors feint, revealing distinct movement characteristics that differ from less-skilled players. These include active distance regulation, strategic modulation of relative speed and efficient feint execution.
A study of 90 Japanese esports players found 43.3% had poor subjective sleep quality, with later bedtimes and shorter sleep times common among pros. Early-morning gaming was linked to poor sleep quality, highlighting the need for sleep support tailored to competitive status.
A neural network-based machine learning model accelerates diffuse optical tomography by over a million-fold, enabling real-time diagnosis. The model accurately reproduces signals even for unseen parameter combinations, with each inference taking approximately 2 milliseconds.
Researchers found that atmospheric rivers have intensified in recent decades, leading to more frequent extreme rainfall events in Japan. This trend aligns with global warming and increased atmospheric water vapor content.
Researchers developed a novel method to predict physical phenomena without estimating parameters, reducing computational challenges. The new approach uses a multiparameter eigenvalue-problem emulator to directly predict unknown observables.
Researchers found that climate variability in the North Atlantic-European region and tropical Indo-Pacific regions interact to intensify Japanese winters. This interaction amplifies jet stream disturbances, resulting in colder and more severe conditions.
A nationwide analysis of Japanese citizens found that SGM individuals experience greater mental health distress, with no improvement seen from living in municipalities with partnership certification systems. Surprisingly, suicidal ideation was reported more frequently among those with such systems.
A recent study using motion-capture and particle image velocimetry reveals that the flutter kick generates three-dimensional vortex structures contributing to forward propulsion. The alternating leg movements also produce asymmetric vortices, generating rolling and yaw moments that stabilize body posture during swimming.
Researchers used cryo-EM to investigate the molecular basis of functional diversity in alcohol oxidase isozymes. The study found structural differences in cofactor binding and amino acid residues that affect enzyme stability and catalytic performance, ultimately resulting in distinct roles among the variants.
Researchers observed a previously unknown strategy used by corioxenid parasites to overcome host-imposed barriers. By raising their host's wings, male parasites were able to emerge and mate. This finding expands our understanding of host range diversification within Strepsiptera.
A study in Japan found that individuals with higher health literacy regarding gastric cancer and screening, those who perceived themselves to be at risk, and those who received encouragement from others exhibited stronger screening intentions. Concrete implementation intentions were also significantly linked to actual screening partici...
A study of the 2005 Fukuchiyama-Line derailment accident reveals failures in organizational management as the root cause. The analysis found that skill development systems based on two-way communication among drivers are the most effective measure for preventing such accidents.
A study found that PEG tube aspirate and vomitus display distinct color patterns, with the aspirate being yellow-green and the vomitus dark brown. This contrast can serve as a diagnostic clue for gastric outlet obstruction in resource-limited settings.
Researchers discovered a molecular link between multicentric carpotarsal osteolysis (MCTO) and kidney disease, highlighting pathogenic MAFB accumulation and PI3K/AKT signaling. Treatment with imatinib suppressed AKT phosphorylation and attenuated glomerular injury in mice.
Researchers analyzed a large dataset of Japanese Instagram ads to identify linguistic patterns linked to click-through rates. The study found that word choices for supplement and cosmetic ads differed significantly, with risk-related words boosting CTR in supplement ads, while motion-related language increased CTR in cosmetic ads.
A study of 308 participants found that those with higher baseline ePTFp concentrations experienced a significantly steeper decline in kidney function over time. This association remained significant even when serum phosphate concentrations were within normal range.
A study found mitochondrial morphological abnormalities and downregulation of mitochondria-related genes in patients who developed myocarditis after mRNA vaccination. Treatment with antioxidants and pharmacological inhibitors suppressed the condition. Sex hormones may also play a role in preventing cardiac dysfunction.
Children who engaged in regular outdoor play had lower sedentary time and higher moderate-to-vigorous physical activity in adulthood, while those experiencing exercise restrictions during childhood had lower adult physical activity levels. These findings support personalized lifestyle interventions for patients with CHD.
After a mild head injury, CSF motion increased in some regions and decreased in others. The technique may help clarify the link between post-traumatic brain conditions and changes in cognitive function.
A novel circular RNA replicon was identified in a high-temperature hot spring ecosystem, showing profound divergence from previously known circular RNAs. The discovery reveals diverse self-replicating RNAs exist even in extreme environments, broadening the ecological scope of RNA-based replication systems.
Tomatoes have difficulty germinating under prolonged heat stress, but two mutant lines with the loss-of-function mutation in SlIAA9 showed little decline in germination and normal seedling development. The mutants exhibited elevated expression of antioxidant enzymes and heat shock proteins, leading to enhanced resilience to heat stress.
Researchers used LiDAR surveys to analyze medieval mountain castles' topography, distinguishing between human-made and natural landscapes. The study found that castle sites exhibit greater variability in slope compared to unmodified natural ridges, with high slope variability linked to landslide traces within the castle boundaries.
Researchers found that pill bugs do not simply incorporate ingested CaCO3 minerals as building blocks. Instead, they actively restructure CaCO3 within their bodies to form their tergite cuticles. This study highlights the biological control underlying mineral formation and provides new insights into biomineralization mechanisms.
Researchers used genome editing to inactivate a gene involved in anthocyanin production, resulting in increased accumulation of other flavonoids. This modification did not affect lettuce growth, suggesting a promising strategy for developing cultivars with tailored functional components.
Researchers found that the loss of flight in Prosopocoilus hachijoensis is linked to atrophy of flight muscles and reduced relative wing size. The species' increased reliance on ground-based locomotion, particularly in females, may have driven this adaptation.
Researchers discovered that limonene can be used as a reaction solvent for the Mitsunobu reaction, allowing efficient separation and purification. This characteristic promotes high reaction efficiency and simplified purification, making it an attractive alternative to traditional methods.
Researchers observed nonrandom patterns of spike D614 reversions in SARS-CoV-2 delta and omicron BA.2 variants, suggesting a non-spontaneous mechanism. These reversions occurred disproportionately after peak transmission periods and showed geographic clustering.
Researchers determined the LH1-RC complex structure at high resolution, identifying a new membrane protein and non-heme Fe ion that may facilitate electron transfer. The findings provide insight into the photosynthetic complex and could contribute to genetically engineered phototrophic systems and bioremediation technologies.
Research reveals longer weekly home-visit rehabilitations (HR) significantly improve activities of daily living (ADL) among older adults, especially those requiring moderate to severe care. The study found that HR duration correlates with ADL improvement in this population.