A5018504032- Fuel Cells and Related Materials
- Electrocatalysts for Energy Conversion
- Transition Metal Oxide Nanomaterials
- Conducting polymers and applications
- Catalysis and Oxidation Reactions
- Advancements in Battery Materials
- Supercapacitor Materials and Fabrication
- Analytical Chemistry and Sensors
- Polyoxometalates: Synthesis and Applications
- Catalytic Processes in Materials Science
- Gas Sensing Nanomaterials and Sensors
- Electrochemical sensors and biosensors
- Advanced Battery Materials and Technologies
- Advanced Battery Technologies Research
- Ga2O3 and related materials
- Diamond and Carbon-based Materials Research
- Chemical Synthesis and Characterization
- Chemical and Physical Properties of Materials
- Adsorption, diffusion, and thermodynamic properties of materials
- Vascular Malformations and Hemangiomas
- Pigment Synthesis and Properties
- Superconducting Materials and Applications
- Electrochemical Analysis and Applications
- Nanomaterials for catalytic reactions
- Copper Interconnects and Reliability
Ibaraki University
2009-2021
Hitachi (Japan)
2007-2021
Okayama University
2010
York University
2007
Kyushu University
1977-2005
Institute of Metal Research
1999
Keio University
1992-1998
University of Tokyo Hospital
1993
Our aim was to investigate the regulation of glucose and fatty acid metabolism in cardiomyocytes by globular (gAd) full-length (fAd) forms adiponectin.We produced fAd (consisting high, medium low molecular weight oligomers) a mammalian expression system gAd bacteria. These were used treat primary neonatal rat (up 48 h), we employed 3H- or 14C-labeled substrates monitor uptake subsequent via oxidation, glycogen synthesis lactate production oxidation. Enzymatic assay for acetyl CoA carboxylase...
We have used fibrous carbon materials as polymer electrolyte fuel cell (PEFC) electrodes. examined the influence of ionomer/carbon ratio on performance PEFCs. The Marimo is a kind with spherical shape, and consists nanofilaments. Fibrous large specific surface areas without fine pores. reactant gases generated water can easily diffuse among ionomer plays two roles; one proton transfer activity, other binding catalyst An excess interferes diffusion gases. should affect PEFC, especially at...
Summary Otitis media is one of the most common and intractable ear diseases, major cause hearing loss, especially in children. Multiple factors affect onset or development otitis media. Prostaglandin D2 prostanoid involved infection allergy. However, role prostaglandin receptors on pathogenesis remains to be determined. Recent studies show that D receptor (DP) chemoattractant receptor-homologous molecule expressed T helper type 2 (Th2) cells (CRTH2) are receptors. In this study, homozygous...
The development of efficient fuel cells greatly promotes reducing the consumption fossil energy, and it is crucial to enhance platinum (Pt) catalytic activity by optimizing both nanoparticle size support effect. In this study, we generate a smaller uniform naked Pt nanocluster (NC) catalysts via dry process in gas phase, using direct powder embedded trapping method, NCs are spatioselectively supported on Marimo carbon (MC) that comprises high density nanofilaments. At minimum loading 0.05...
In this study, multi-walled carbon nanotubes were used as a support. The support for the Pt catalyst was prepared by convenient technique without need acid or heat treatment. Two different preparation methods utilizing nanocolloidal solution developed; i. e., method 1 and 2, an improved 1. colloidal first adding carbon. Based on SEM TEM observations, nanoparticles (5-20 nm) adequately supported. It found that better supported high dispersion in 2 compared to amounts Pt/MWCNT catalysts 31.4...
Layered lithium–vanadium oxide with a composition of ( and ) was prepared by the hydrothermal reaction at 180°C. This material corresponds to layered rhombohedral structure related in which vanadium ions are disordered alternate layers octahedral 3a (0, 0, 0) 3b sites. The electrochemical properties this were investigated compared those made conventional solid-state reaction. It found that capacity reversibility significantly improved material; reversible specific capacities systems ,...
Abstract A test method is proposed for obtaining correct polarization curves of PEFC single cells with reference electrodes, which in principle should have identical anode both H 2 /O and /Air. Measured are usually linear to the current density but not ohmic. Leak between cathode electrode causes voltage shift on curve. In order obtain ohmic polarization, measured curve be moved vertically up overlap base point. Configuration edge adjacent gives a significant effect potential. Polarization...
A fibrous carbon material has been used as the catalyst support of a polymer electrolyte fuel cell (PEFC) that is called Marimo (MC). The sufficient space volume between each fiber without any fine pores. supported Pt (Pt/MC) should show performance different from traditional catalyst. Pt/MC better than when ionomer content less 15.5 wt% in layer. needs about 25 for optimal performance. By using carbon, we simultaneously succeeded increasing and reducing
The effects on cell performance of Nafion® content in 1 mg/cm2 Pt with a and carbon mixture containing 50 wt.% (50 wt.%Pt/C-1 mgPt/cm2) catalyst layers were studied under several humidified operating conditions at 80°C atm. optimum for these was 28-32 (0.76-0.95 mg/cm2). value obtained using the wt.%Pt/C compared reported values 20 or wt.%PtCr/C catalyst. layer’s activation polarization insufficient decreases concomitantly increased humidity, but that layer excessive increases humidity.