Takuma Higo

ORCID: 0000-0002-2742-0836
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About
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Research Areas
  • Catalytic Processes in Materials Science
  • Catalysis and Oxidation Reactions
  • Catalysts for Methane Reforming
  • Ammonia Synthesis and Nitrogen Reduction
  • Hydrogen Storage and Materials
  • Vascular Malformations Diagnosis and Treatment
  • Vascular Malformations and Hemangiomas
  • Advanced Chemical Physics Studies
  • Caching and Content Delivery
  • Zeolite Catalysis and Synthesis
  • Electrocatalysts for Energy Conversion
  • Hybrid Renewable Energy Systems
  • Advanced Data Storage Technologies
  • CO2 Reduction Techniques and Catalysts
  • Electronic and Structural Properties of Oxides
  • Industrial Gas Emission Control
  • Nanomaterials for catalytic reactions
  • Catalysis and Hydrodesulfurization Studies
  • Glioma Diagnosis and Treatment
  • Epilepsy research and treatment
  • Molecular Junctions and Nanostructures
  • Traumatic Brain Injury and Neurovascular Disturbances
  • Intracerebral and Subarachnoid Hemorrhage Research
  • Chemical Looping and Thermochemical Processes
  • Meningioma and schwannoma management

Waseda University
2016-2025

Tokyo Metropolitan Hiroo Hospital
2021-2024

University of Tokyo Health Sciences
2024

Juntendo University
2007-2021

Shinjuku College of Information Technology
2020-2021

The University of Tokyo
2009

This paper presents a simple yet practical 3-D modeling method for recovering surface shape and reflectance from set of images. We attach point light source to hand-held camera add photometric constraint the multi-view stereo problem. Using constraint, we simultaneously solve shape, normal, reflectance. Unlike prior approaches, formulate problem using realistic assumptions near source, non-Lambertian surfaces, perspective model, presence ambient lighting. The effectiveness proposed is...

10.1109/iccv.2009.5459331 article EN 2009-09-01

Dehydrogenation of methylcyclohexane (MCH) was conducted over Pt/TiO2-Al2O3 catalysts, showing high activity, selectivity, stability, and mechanical strength. XPS measurements revealed that the binding energy Pt 4d5/2 shifted to a lower by adding TiO2 due electron donation from TiO2. Formed toluene released immediately on electron-rich before further decomposition form methane coke thanks π-coordination. This phenomenon improved catalytic performance, ensuring durability for dehydrogenation.

10.1246/cl.170722 article EN Chemistry Letters 2017-08-24

Summary Objective Some patients with S turge‐ W eber syndrome ( SWS ) need epilepsy surgery for adequate seizure control and prevention of psychomotor deterioration. The majority have leptomeningeal angioma located over the temporal, parietal, occipital lobes. We applied posterior quadrant disconnection this type intractable seizure. evaluated efficacy procedure in development. Methods Ten who were surgically treated using quadrantectomy PQT enrolled study. Surgical outcome was analyzed as...

10.1111/epi.12547 article EN Epilepsia 2014-02-22

The role of the electric field and surface protonics on low temperature catalytic dry reforming methane was investigated over 1 wt %Ni/10 mol %La-ZrO2 catalyst, which shows very high activity even at temperatures as 473 K. We kinetic analyses using isotope in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS), revealed synergetic effects between reaction with less than one-fifth apparent activation energy temperatures. Results investigations isotopes such CD4 18O2,...

10.1021/acssuschemeng.8b04727 article EN ACS Sustainable Chemistry & Engineering 2019-02-19

Methane activation on diluted metal ensembles is a challenging task in the field of alloy chemistry. This report describes that synergy between an electric and Pd-Zn allows improved catalytic activities steam reforming methane. Because surface protonics, Pd-Pd are no longer needed. Ligand effects facilitate methane conversion.

10.1039/c9cc02794g article EN Chemical Communications 2019-01-01

CO2 conversion to CO by reverse water-gas shift using chemical looping (RWGS-CL) can be conducted at lower temperatures (ca. 723-823 K) than the conventional catalytic RWGS (>973 K), and has been attracting attention as an efficient process for production from CO2. In this study, Co-In2O3 was developed oxygen storage material (OSM) that realize RWGS-CL process. showed a high splitting rate in mid-temperature range (723-823 compared with previously reported materials had durability through...

10.1039/d2cc00208f article EN cc-by-nc Chemical Communications 2022-01-01

10wt%Ni–10wt%Mg–La0.1Zr0.9O2–x (LZO) catalyst shows high reforming activity of methane while suppressing combustion on tri-reforming at low temperatures 473 K in an electric field. On the basis results light-on and light-off tests for oxidation temperature dependencies catalytic steam with or without field, we found that Mg addition to 10wt%Ni–LZO suppresses combustion, proceeds well by virtue surface protonics Ni2+ 10wt%Ni–10wt%Mg–LZO was more cationic than catalyst, NiO–MgO solid solution...

10.1021/acscatal.8b02476 article EN ACS Catalysis 2018-10-25

Low-temperature heterogeneous catalytic reaction in an electric field is anticipated as a novel approach for on-demand and small-scale processes. This report quantitatively reveals the important role of proton coverage on catalyst support ammonia synthesis field, which shows anti-Arrhenius behaviour.

10.1039/d0cc00482k article EN cc-by-nc Chemical Communications 2020-01-01

Efficient activation of CO 2 at low temperature was achieved by reverse water–gas shift via chemical looping (RWGS-CL) virtue fast oxygen ion migration in a Cu–In structured oxide, even lower temperatures.

10.1039/d0sc05340f article EN cc-by-nc Chemical Science 2020-12-23

CO2 methanation was conducted at low temperatures with an electric field. Results show that 5 wt %Ru/CeO2 catalyst exhibited high and stable catalytic activity for the The kinetic investigations in-situ DRIFTS measurements revealed Ru/CeO2 promoted Ru Ru–CeO2 interface (low-coordinated sites) contributes to reverse water gas shift reaction in Hydrogenation of CH4 proceeds over field even below 473 K, where conventional without does not proceed. In field, exhibits hindrance CO adsorbed on...

10.1246/cl.190930 article EN Chemistry Letters 2020-01-21

Lean-burn engines are gaining attention for their lower CO

10.1039/d3cc05189g article EN cc-by-nc Chemical Communications 2024-01-01

Chemical looping dry reforming of CH 4 , a promising approach to reduce fossil fuel consumption and use CO 2 hinges on designing an efficient oxygen carrier.

10.1039/d4cy00450g article EN cc-by-nc Catalysis Science & Technology 2024-01-01
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