National Institute of Advanced Industrial Science and Technology

Synchrotron-Based 3D Operando Chemical Imaging of Battery Electrodes: Toward Rational Design of Electrochemical Devices for Green Transformation

Achieving green transformation (GX) and carbon neutrality requires the large-scale deployment of renewable energy and the electrification of broad sectors of society. Realizing this transition depe...

2D and 3D Geomechanical Numerical Simulation for Evaluating Well-Stability and Reservoir Consolidation during the Production from the HYDRATE P1 Well on the Alaska North Slope

Abstract Methane hydrate production via depressurization can induce geomechanical changes in hydrate-bearing sediments, thereby impacting production performance and risking subsidence and wellbore instability. Here, a fully coupled thermo-hydro-mechanical simulator (COTHMA) is ap...

Alaska North Slope HYDRATE 02 Geo Data Well Multicomponent Inversion and NMR Log and Core Analysis of the B1 Sand Gas Hydrate Reservoir

Abstract The Collaborative Gas Hydrate R&D Project in Alaska, a joint initiative by the Japan Organization for Metals and Energy Security, the U.S. Department of Energy, and the U.S. Geological Survey, aims to advance understanding of gas hydrate reservoir systems and their produ...

Single-cell genomics reveals opportunistic Enterobacterales carrying putative cationic antimicrobial peptide resistance genes in red crown rot-affected soybean rhizoplanes

The productivity of soybean, a globally important agricultural crop, is strongly influenced by soil- and root-associated biotic interactions, including those that shape disease outcomes. Soybean red crown rot, caused by the soil-borne fungus Calonectria ilicicola , leads to subst...

High-Field Specific Heat and Fundamental Superconducting Properties of the Single-Phase Type-II Superconductor V 3 Si

The specific heat data above the upper critical magnetic field H c2 , the angular dependence of H c2 , and fundamental superconducting parameters were consequently determined. The V 3 Si sample used in this research does not exhibit the structural transition and its high quality...

Lithological Control of Gas Hydrate Saturation Determined by Pressure Core Analysis in Subpermafrost Reservoirs of the Alaska North Slope (HYDRATE-02 Geo Data Well)

Abstract Quantitatively degassing pressure cores by controlled depressurization is a key approach to characterizing gas hydrate reservoirs by measuring the gas hydrate saturation (Sh) of sediments. We measured Sh for 53 core sections from the Alaska North Slope during the JOGMEC-...

Strength, Stiffness, and Poisson’s Ratio Measurements for Cements Used in the Well Completions for the Extended-Duration Gas Production Test on the Alaskan North Slope

Abstract As part of an extended-duration production test from a natural gas hydrate reservoir on the Alaska North Slope, a suite of optical-fiber sensors was encased in the completion cement to provide stable downhole monitoring around each of the four project wells. How the sens...

Fluvial geomorphological development associated with MIS 5e–4 sea-level fluctuations in the lower reaches of the Kinu River, Japan

Understanding fluvial geomorphological responses to sea-level fluctuations during Marine Isotope Stage (MIS) 5 is essential for predicting future evolution of coastal lowlands under sustained high sea-level conditions. Although downstream river development since the Last Glacial...

Crystallographic Spin‐Orbit Torque From Epitaxial CrSb

ABSTRACT Altermagnets (AMs) represent an emerging magnetic phase that combines compensated antiferromagnetic order with ferromagnet‐like spin‐splitting, offering a new route for efficient spin‐current generation. Here, we experimentally demonstrate spin‐torque generation in epita...

International Intercomparison of Primary Photovoltaic Reference Cell Calibrations With Excellent Agreement

This study presents the results of an international intercomparison of primary calibration methods for photovoltaic (PV) reference devices according to IEC 60904‐4. The comparison involves three leading calibration laboratories—PTB, NLR, and AIST—representing independent traceabi...

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...

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...

Functional Assessment of Platelet‐Derived Phospholipid Activity in Pooled Normal Plasmas by Low‐Phospholipid Thrombin Generation Assay and Its Impact on Lupus Anticoagulant Mixing Tests

ABSTRACT Background Pooled normal plasma (PNP) used for lupus anticoagulant (LA) mixing tests may carry platelet‐derived phospholipid (PL) activity introduced during freezing/lyophilization, potentially attenuating LA‐mediated prolongation of clotting times. Objectives To determi...

A unified framework for estimating fingertip forces and muscle activations in human grasping with anatomical modeling and soft-finger contact

Abstract We developed a method to estimate fingertip forces, torques, and muscle activations during object grasping with a digital hand model. Grasping an object requires several equilibrium conditions: force and moment balance on the object, consistency between fingertip forces...

Highly conductive regenerated cellulose fibers containing high-quality single-walled carbon nanotubes

Abstract This study demonstrates the successful fabrication of highly conductive regenerated cellulose fibers (RCFs) through the proper mixing of single-walled carbon nanotubes (CNTs) retaining the high quality at concentration of 1.0–3.0 wt% in the dispersions. The CNT dispersio...

Development of Hamiltonian for Structural Applications by Quantum Annealing Assuming Finite Element Method

ABSTRACT Quantum annealing is emerging as a practical tool for large‐scale combinatorial optimization. We map continuum displacements and element densities to binary variables, turning both deformation analysis and topology optimization into quadratic unconstrained binary optimiz...

Spin-coherence characterization of boron vacancy defects in hexagonal boron nitride with broadband microwave pulses

Negatively charged boron vacancy (VB−) defects in hexagonal boron nitride (hBN) are promising for nanoscale-proximity quantum sensing. To evaluate their performance, it is important to characterize the spin-coherence times T2* and T2. In this study, we realized subgigahertz Rabi...

Effects of H2 addition on highly selective SiOCN etching using NF3-based plasma

In three-dimensional (3D) stacked logic devices, low dielectric constant (low-k) materials, such as SiOCN, are used as spacer materials and require highly selective isotropic etching. In this study, we investigated the effects of the addition of H2 gas on highly selective SiOCN e...

Preclinical evaluation of a fully threaded biodegradable magnesium alloy headless compression screw for enhanced fixation in small bones

Background Biodegradable magnesium (Mg) alloys have attracted attention as alternatives to conventional metallic implants; however, their clinical applicability to fully threaded headless compression (HC) screws has been scarcely investigated. Methods In this study, a fully threa...

Impact of Prolonged Continuous Stress Exposure on Immune Function and the Gut Microbiome in a Perpetual Avoidance of Water on a Wheel Mouse Model

Both the immune system and gut microbiome play important roles in the physiological response to stress, yet their interplay under conditions of long-term continuous stress remains poorly understood due to the lack of suitable experimental models. We employed our previously develo...