Tohoku University

Observed weakening of the Kuroshio driven by the East Asian winter monsoon under ongoing climate warming

Abstract Western boundary currents are generally thought to respond to global warming through basin-scale wind forcing and ocean stratification, yet the role of local winds remains unclear. Here, we investigate changes in the Kuroshio under ongoing climate warming using satellite...

Coulomb Blockade in Graphene Nano-islands Formed by Direct CVD Growth on Si/SiO 2 Substrate

Graphene nano-islands (GNIs) are promising building blocks for quantum devices owing to their unique potential. However, direct electrical measurements of GNIs have been challenging due to the requirement of metal catalysts in typical synthesis methods. In this study, we demonstr...

Right coronary artery ectasia with a focal aneurysm in a decomposed body: Non-contrast postmortem CT and autopsy correlation

Herein, we present a case involving a markedly decomposed body in which non-contrast postmortem computed tomography (PMCT) demonstrated long-segment right coronary artery ectasia with focal aneurysmal dilatation. A man estimated to be in his 30s was found dead 12 days after he ha...

Role of Al2Cu and Al3Fe in pit initiation of aluminum: insights from coarse single- and multi-particle electrodes

Abstract Al specimens containing coarse Al 2 Cu or Al 3 Fe particles were fabricated by spark plasma sintering through mixing pure Al powder with Cu or Fe powder, followed by hot forging and heat treatment to form intermetallic particles with diameters primarily in the range of 5...

Besov spaces associated with the harmonic oscillator

Abstract The Besov space associated with the harmonic oscillator is introduced and thoroughly explored in this paper. It provides a comprehensive summary of the fundamental concepts of the Besov spaces, their embedding properties, bilinear estimates, and related topics.

Melt evolution and crystal cargo uptake at Mount Ruapehu: a magma plumbing system characterized by narrow dikes and sills

Abstract To assess the magma plumbing architecture of Mount Ruapehu, an active stratovolcano in the Taupō Volcanic Zone (New Zealand), we combine whole rock, groundmass and crystal geochemistry of lava samples from the south-west flank, focusing on the Mangawhero (50–15 ka) and W...

Fine-scale strain-rate mapping of Japan from integrated public–private GNSS stations

We integrated observational data from the Global Navigation Satellite System (GNSS) Earth Observation NETwork System (GEONET) in Japan, operated by the Geospatial Information Authority of Japan, with over 3,300 proprietary reference stations operated by SoftBank Corp., and, using...

Osteoclastogenesis with FN1-associated cell differentiation, immune communication, and ECM remodeling in male SAMP6 mice

Early diagnosis and precise treatment of senile osteoporosis remain challenging. Herein, we apply a multi-omics strategy, integrating scRNA-seq and proteomics in the male 5-month-old senescence-accelerated mouse prone 6 (SAMP6) spontaneous aging model, to study early bone loss. T...

Multi‐Biomimetic Structural Colors Inspired by Pearls and Bird Feathers

ABSTRACT One‐dimensional photonic crystals (1D PCs) enable precise control of light–matter interactions and display stable structural colors. However, their optical performance critically depends on strict periodicity and nanometer‐scale control of thickness, necessitating comple...

Computational and Experimental Comparison of CLF5605 and Roamx-0201 Martian Helicopter Rotor Airfoils

This study compares the performance of the CLF5605 rotor airfoil—which flew on Ingenuity—with that of a new optimized roamx-0201 airfoil designed for Martian conditions at NASA Ames Research Center. Specifically, performance is studied at a Reynolds number of 20,000 and a Mach nu...

Direct Visualization of a Hydroperoxy Intermediate in Fluorescent Protein Chromophore Maturation in PAmCherry1

Abstract Despite the widespread use of fluorescent proteins in bioimaging, the mechanism of oxidative chromophore maturation to form the tyrosine Cα═Cβ double bond remains unclear. In the photoactivatable fluorescent protein PAmCherry1, this double bond has not yet been formed pr...

Effects of optimized lignocellulosic pretreatment derivatives on hydrolysis efficiency and codigestion performance of corn straw with food waste

Corn straw is a typical lignocellulosic biomass, and its anaerobic conversion is generally limited by the hydrolysis limitation. Ozone pretreatment can effectively improve the biodegradability of straw; however, its key process parameters have not been systematically optimized or...

Coaxially Electrospun 1D TiO2/Au x ( X = 2.5, 5.0, 7.5) Heterojunction Nanofibers: Unveiling the Role of TiO2–Au x Interfaces in Carbon Monoxide Oxidation

Abstract A “silent killer” that threatens aerobic life, carbon monoxide (CO) pollution has increased due to the Earth’s ecological equilibrium being upset by rapid industrialization and excessive resource extraction. In this study, titanium dioxide nanofibers (TiO2) decorated wit...

Stress field estimation and evaluation in eastern Hokkaido, northernmost Japan

In eastern Hokkaido, a volcanic front extends in the northeast–southwest direction, and small eruptions have occurred in recent years. Although eastern Hokkaido is a low-seismicity region, we estimated the stress field using a larger dataset than those employed previously to unde...

Development of a python interface for a framework of cross-reference solar-terrestrial physics simulation

Cross-reference simulation combines multiple simulation codes when one code requires data produced by another. To provide an efficient and convenient solution for cross-reference Solar-Terrestrial Physics (STP) simulation, a framework called Code-To-Code Adapter (CoToCoA) Library...

Impact of adjuvant chemotherapy on renal impairment patients following radical nephroureterectomy in upper tract urothelial carcinoma: a multicenter retrospective study

Abstract To evaluate the impact of adjuvant platinum-based chemotherapy (AC) on oncological outcomes in high-risk upper tract urothelial carcinoma (UTUC) patients with postoperative renal impairment following radical nephroureterectomy (RNU). Among 1050 patients who underwent RNU...

Copper-Catalyzed 1,3-Propargyl Shift: Development of an Anionic Rearrangement of ortho -Metalated Aryl Propargyl Ethers

Abstract A novel anionic [1,3]-rearrangement of ortho-metalated aryl propargyl ethers was developed. A catalytic amount of copper(I) salt efficiently promotes the 1,3-shift of a propargyl group from an oxygen atom to a carbon atom in an aryl magnesium species, affording phenol de...

Experimental detailed analysis of flow and temperature fields of free surface flows with turbulence promoters for investigation of surface heat removal mechanism

As for a liquid molten salt divertor proposed for a fusion DEMO reactor divertor that maintains the plasma-facing surface in a healthy condition through free-surface flow, one of the key challenges is how to suppress the surface temperature despite the low heat transfer performan...

What Controls Extreme Rainfall Intensity and Location Associated With Line‐Shaped MCSs Over Northern Japan? An Ensemble‐Based Approach

Abstract Line‐shaped mesoscale convective systems (MCSs) frequently produce extreme rainfall and severe hydrological disasters in Japan. This study investigates the environmental controls on both rainfall intensity and spatial displacement associated with two line‐shaped MCS even...

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...