Tohoku University

The parent bodies of Ryugu and Ivuna formed before those of other carbonaceous chondrites

Most carbonaceous chondrite (CC) meteorites contain abundant chondrules, millimeter-scale spherical inclusions of previously molten material. Ivuna-type carbonaceous chondrites (CIs) do not contain chondrules, nor do samples of the carbonaceous asteroid Ryugu. CIs and Ryugu share...

Indoor air pollutants and blood pressure in toddlers: data from the Japan environment and children’s study

Abstract Background Hypertension in childhood has been recognized as an early marker of future cardiovascular risk, and blood pressure trajectories are known to track from early life into adulthood. Environmental exposures during early childhood, particularly indoor air pollutant...

Management and Outcomes of Cardiac Sarcoidosis: Insights From the Nationwide MYSTICS Registry

BACKGROUND: Cardiac sarcoidosis (CS) may lead to serious outcomes, but large-scale data are lacking because of its rarity, diagnostic uncertainty, and heterogeneous clinical presentations. Actual management and outcomes, including recurrence, are not well understood. This study a...

Demographic and clinical characteristics of rapidly progressive glomerulonephritis in renal vasculitis in the Japan renal biopsy registry

This study evaluated the clinical and demographic characteristics of biopsy-proven rapidly progressive glomerulonephritis (RPGN), with histological evidence of renal vasculitis. We focused on five vasculitis-related nephritides: MPO-ANCA, PR3-ANCA, anti-GBM, IgA vasculitis (IgAV)...

Diffusional earthquakes and their slip-distance scaling

Abstract The final size of an earthquake typically cannot be predicted from its ongoing seismic radiation. Expanding observations reveal distinct exceptions, such as slow earthquakes, injection-induced seismicity, and natural earthquake swarms, in which fault slip has an upper bo...

Blue-sky thinking about pronunciation research and teaching

Abstract In the fall of 2024, Ron Thomson and Tracey Derwing invited 15 pronunciation scholars representing several subspecialties to participate in a full-day symposium to discuss directions for pronunciation research. To prepare for the symposium, held in conjunction with the P...

Discovery of an intrinsic non-Hermitian phase transition in a bulk condensed-matter system

Across regular phase transitions, systems remain in thermal equilibrium. However, when a system is driven far from equilibrium, non-Hermitian phase transitions may arise where the dynamical behavior—rather than steady properties—undergoes a qualitative change at a critical, so-ca...

Timing of Noncontact Anterior Cruciate Ligament Injury According to Developmental Stage in Japanese Female Athletes

Objectives: This study aimed to identify the timing of high incidence of noncontact anterior cruciate ligament (ACL) injuries in female athletes by developmental stage. Design: Cross-sectional study. Setting: Orthopedic clinic specializing in sports injuries. Participants: The st...

A collagen orientation switch reshapes fin architecture

Fibrillar-collagen architecture is a fundamental determinant of vertebrate tissue morphology; yet, its organizational principles remain poorly understood because collagen structures are challenging to visualize in vivo . Actinotrichia, the fibrillar-collagen structures in fish fi...

Investigating aspects of social acceptance of Rapid Autopsy Program (RAP) in Japan: an exploratory survey

Abstract Background Rapid Autopsy Program (RAP) provides postmortem tissue specimens for biomedical research, including molecular oncology and personalized medicine. However, public perspectives on RAP and related forms of postmortem human tissue use remain insufficiently charact...

Preferences and reasons for clothing colors in women patients and survivors of breast cancer in Korea

Purpose Clothing color can affect the psychological aspects in female patients and survivors of breast cancer; however, little is known regarding their preferences and reasons for choosing specific clothing color. This study aimed to explore the factors influencing their clothing...

State-dependent governance escalation in Wikimedia wikis: excess monitoring and enforcement concentration after conflict shocks

Rules and monitoring can help communities coordinate under stress, but they can also harden into counterproductive red tape. This paper asks whether a wiki’s pre-shock procedural regime shapes how it reorganizes when stress spikes. Bureaucratic state is measured as excess monitor...

Redefining Carbon Electrodes as Hierarchically Designable Reaction Fields for Electrochemical Biosensing

Electrochemical biosensors based on carbon materials have achieved remarkable sensitivity, yet carbon electrodes are still often treated as black-box conductive supports. In this perspective, we redefine carbon materials as hierarchically designable reaction fields in which defec...

Ca16Mab-56, a Novel Anti-Cadherin-16/Ksp-Cadherin Monoclonal Antibody for Multiple Applications

Background/Objectives: Cadherin-16 (CDH16, Ksp-cadherin) possesses unique seven extracellular cadherin repeats, and its expression is restricted to normal kidney epithelium. CDH16 is downregulated in renal cell carcinoma (RCC) and is associated with poor prognosis. Therefore, dev...

Porous Membrane Adsorption for Capturing Small Extracellular Vesicles Enables Accessible Single-Particle Analysis

Quantitative analysis of small extracellular vesicles (sEVs) at single-particle resolution remains challenging due to their nanoscale dimensions and compositional heterogeneity. Existing methods often rely on specialized and costly instrumentation, limiting accessibility for many...

Nature of the Localized V 3 d Electrons in Mo- and W-Doped BiVO4 Revealed by Soft X-ray Photoemission and Absorption Spectroscopy

Abstract We have investigated the effects of Mo and W doping on BiVO4 by means of X-ray photoemission spectroscopy (XPS) and X-ray absorption spectroscopy (XAS). The V 2p XPS spectra indicate that the substitution of W6+ and Mo6+ for V5+ induces the formation of V4+ species. In a...

Chiral by Nature: Chiroptical Activity in Fe3O4 Magnetic Nanoparticles from Bacterial Biomineralization

Abstract The coexistence of chirality and magnetism in nanomaterials has been observed with metallic complexes but remains rarely achieved in magnetic oxides. Here, we identify biologically induced chiroptical activity in the magnetotactic bacterium Magnetospirillum gryphiswalden...

Enantioselective and Divergent Synthesis of Propargylamides and Allenamides from Alkynyl Diazoketones and Anilines via Organocatalytic Wolff Rearrangements

Abstract Chiral allenes and alkynes are privileged scaffolds in natural products and pharmaceuticals. Although significant advances have been achieved in catalytic asymmetric synthesis from diazo compounds, selectively achieving high levels of both enantioselectivity and regiosel...

Aging beyond older adults: Transdisciplinary perspectives on demographic change in Japan

Population aging is increasingly recognized not merely as a demographic phenomenon, but as a broader societal transformation reshaping care systems, labor structures, infrastructure, communication, governance, and everyday social relations. Using Japan as an example of an advance...

IR Spectroscopy of Gas-Phase Protonated Water–Acetonitrile Clusters: Comparison of the Clusters in the Condensed Phase and Gas Phase

Abstract We performed infrared photodissociation spectroscopy and theoretical computations on gas-phase protonated water–acetonitrile clusters, H+[(H2O)m(CH3CN)n] (m = 1, n = 1–3; m = 2, n = 1–6; and m = 3, n = 5), to determine their cluster structures and compared their infrared...