Tohoku University

Estimation of auroral emission altitude in the region of the ISS magnetic footprint during a relativistic electron precipitation event observed by ISS-CALET

We report a multi-MeV relativistic electron precipitation (REP) event as observed by the CALorimetric Electron Telescope and the Monitor of All-sky X-ray Image aboard the International Space Station, together with low-cost twin all-sky auroral imagers installed at Athabasca, Cana...

Late middle Pleistocene fossil coral reef growth history in the subtropical Northwest Pacific

Abstract During the Middle and Late Pleistocene, the Earth experienced rapid millennial-scale climate and sea-level fluctuations associated with 100 kyr-glacial-interglacial cycles. However, understanding of the timing and amplitude of these changes, and their impact on coral ree...

Raman Enhancement of Molecules Sandwiched between van der Waals Materials

Abstract Raman enhancement has been widely observed for molecules adsorbed on van der Waals (vdW) materials including graphene, MoS2, hexagonal boron nitride, and transition-metal dichalcogenides. This enhancement is often dominated by a chemical mechanism. However, how the Raman...

Ultra-fast spin Hall nano-oscillator based microwave spectral analysis

Abstract Ultra-fast spectrum analysis based on rapidly tuned spintronic nano-oscillators has been under development for the last few years and has already demonstrated promising results. Here, we demonstrate an ultra-fast microwave spectrum analyzer based on a chain of five mutua...

Decoupling species richness and interaction frequency reveals how fungal interactions regulate wood decomposition

Abstract Wood decay fungi play a central role in forest carbon cycling, yet the mechanisms linking fungal biodiversity to decomposition remain unclear because species richness and interspecific interactions are rarely separated. Here, we experimentally disentangled these effects...

Health indifference, symptom reporting, hospitalization, and vaccination: a three-wave longitudinal analysis of the Japan Society and New Tobacco/Infodemic Survey (JASTIS)

Abstract Background Healthcare systems struggle to reach people who are not interested in their health. However, prospective evidence on this orientation, which is termed health indifference, is scarce. We examined whether health indifference was associated with subsequent hospit...

Wide‐Bandgap Carbon Dots for Ultraviolet Photodetection: Structural Origins and Design Rules

ABSTRACT Tunable ultraviolet (UV) selectivity in solution‐processable photodetectors remains difficult because absorption, carrier transport, and interfacial extraction are tightly coupled. Carbon dots (CDs) offer broad structural and chemical tunability, yet their structure–stat...

Integrating Leg‐Press Strength and Nutritional Status Improves 16‐Year Mortality Risk Stratification in General Older Adults

ABSTRACT Background Malnutrition and muscle weakness are critical prognostic factors for mortality in older adults. While indices like the Geriatric Nutritional Risk Index (GNRI) are well‐established, the long‐term prognostic value of integrating nutrition with muscle strength (M...

Extratropical teleconnections in a multi-model ensemble nudged towards the observed QBO

The Quasi-Biennial Oscillation (QBO), the dominant mode of interannual variability of monthly-mean zonal winds and temperatures in the equatorial stratosphere, has a significant influence on the circulation in other regions of the stratosphere and troposphere in boreal winter. To...

Leucine-Enriched Essential Amino Acids in Clinical Practice: A Narrative Review

Muscle wasting driven by aging, chronic disease, or intensive exercise undermines mobility, metabolic health, and survival—yet the people who lose the most muscle are often those least able to eat more protein. Leucine-enriched essential amino acid (LEAA) mixtures combine a leuci...

Diabetes Trajectory and Pancreatic Cancer Detection in Patients with Diabetes: A Nationwide Survey Through Japan Diabetes Society-Certified Facilities

Background/Objectives: Diabetes mellitus (DM) and pancreatic cancer (PC) have a bidirectional relationship. Although new-onset DM (NODM) is recognized as a potential clue to PC, worsening glycemic control in long-standing DM (LSDM) may also precede PC diagnosis. We aimed to chara...

Generation and Preservation of Submarine Terraces: Insights From Records Imprinted on the Topography of Dokdo Volcano

Abstract Marine terraces archive sea‐level and tectonic history, yet their relationship to individual highstands remains contentious. While most studies focus on subaerial terraces in uplifting settings, submerged terraces in subsiding settings are less explored. We develop a 1‐D...

Amorphous Tungsten Driving Extraordinary Long‐Range Interlayer Exchange Coupling and Large Spin‐Orbit Torque

ABSTRACT Artificially‐designed magnetic hetero‐structures with an antiferromagnetic alignment of magnetization in magnetic layers, which exploit the interlayer exchange coupling (IEC) through a non‐magnetic layer, are called synthetic antiferromagnets (SyAF) and are a treasure tr...

Adsorption of Per- and Polyfluoroalkyl Substances across Molecular Classes: Understanding Adsorption Behavior and Adsorbent Performance

Abstract Per- and polyfluoroalkyl substances (PFASs) have been widely used in industrial and commercial applications because of the exceptional chemical and thermal stability of their C–F bonds and their water- and oil-repellent properties. Some PFASs (hereafter called “specific...

Craniofacial Morphology and Dental Age Assessment in Pediatric Craniosynostosis: A Comparative Cross‐Sectional Study

OBJECTIVES: To delineate the craniofacial morphometric characteristics of Thai children with syndromic (SC) and non-syndromic craniosynostosis (NSC) and to assess dental maturation relative to Chronological Age (CA). METHODS: This comparative cross-sectional study evaluated 19 pa...

Efficient power generation near room temperature in earth-abundant thermoelectric tin sulfide via lattice ordering

The inefficient carrier transport of earth-abundant tin sulfide (SnS), arising from its intrinsically low crystal symmetry, limits its thermoelectric performance at low temperatures. Here, the substitutional Ag+ doping modifies the Na-doped SnS crystal structure by reinforcing la...

Rapid fluvial response to meter-scale coseismic coastal uplift during the 2024 Noto Peninsula earthquake

Abstract The response of river profiles to relative base-level change is a key topic in earth surface processes, but observations capturing these changes on unconsolidated deposits at a 1–10 years timescales are scarce. We monitored geomorphic changes at the Hakka River mouth aft...

Proposal of a champagne bottle neck sign grading system reflecting advanced Suzuki stage and hemodynamic compromise in patients with Moyamoya disease

The champagne bottle neck sign (CBNS) is regarded as a characteristic finding of the cervical internal carotid artery in patients with moyamoya disease (MMD). However, there is no universal definition, and its clinical significance remains unclear. Here, we aimed to propose a nov...

Progress in deformation mechanisms and emerging functionalities of metastable β titanium alloys: Insights from advanced characterizations

Metastable β titanium alloys, characterized by diverse microstructural evolution due to a high content of β stabilizers, offer great potential for achieving high multifunctionality, such as excellent strength and ductility combination, biocompatibility, superelasticity, shape mem...

Griffiths Inequalities and Gibbs–Bogoliubov Inequality for General Gauge Glasses with Gaussian Disorder on Nishimori Line

We consider a class of gauge glass models with Gaussian disorder on the Nishimori line, including the Ising spin glass, the XY gauge glass, the Z q gauge glass, and the gauge-invariant Potts model. We prove that the first and second Griffiths inequalities hold for these models on...