Kazumasa Suzuki

ORCID: 0000-0002-9824-7620
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About
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Research Areas
  • Low-power high-performance VLSI design
  • Carbon and Quantum Dots Applications
  • Electroconvulsive Therapy Studies
  • Analog and Mixed-Signal Circuit Design
  • Structural Analysis and Optimization
  • Parallel Computing and Optimization Techniques
  • Advanced Materials and Mechanics
  • Luminescence and Fluorescent Materials
  • Advancements in PLL and VCO Technologies
  • Electrocatalysts for Energy Conversion
  • Nanocluster Synthesis and Applications
  • Radio Frequency Integrated Circuit Design
  • Nanomaterials for catalytic reactions
  • Characterization and Applications of Magnetic Nanoparticles
  • Semiconductor materials and devices
  • Advanced Mathematical Modeling in Engineering
  • Bone health and osteoporosis research
  • Protein Hydrolysis and Bioactive Peptides
  • ZnO doping and properties
  • Supramolecular Self-Assembly in Materials
  • Quantum Information and Cryptography
  • Synthesis and Properties of Aromatic Compounds
  • Photonic and Optical Devices
  • Diet and metabolism studies
  • Plant and fungal interactions

Nagoya University
2023-2025

La Jolla Institute for Immunology
2025

Yokosuka Kyosai Hospital
2006-2022

University of Shiga Prefecture
2018-2022

Hikone Central Hospital
2021

Shinko Electric Industries (Japan)
2020

Kanagawa Institute of Technology
2019

University of Sassari
2015-2018

National Interuniversity Consortium of Materials Science and Technology
2015-2018

Boston University
2018

Summary Only graminaceous monocots possess the Strategy II iron (Fe)‐uptake system in which Fe is absorbed by roots as an 3+ ‐phytosiderophore. In spite of being a plant, however, rice ( Oryza sativa ) contains previously identified 2+ transporter OsIRT1. this study, we isolated OsIRT2 gene from rice, highly homologous to OsIRT1 . Real‐time PCR analysis revealed that and are expressed predominantly roots, these transporters induced low‐Fe conditions. When yeast Saccharomyces cerevisiae...

10.1111/j.1365-313x.2005.02624.x article EN The Plant Journal 2006-01-10

Graminaceous plants take up iron through YS1 (yellow stripe 1) and YS1-like (YSL) transporters using iron-chelating compounds known as mugineic acid family phytosiderophores. We examined the expression of 18 rice (Oryza sativa L.) YSL genes (OsYSL1-18) in epidermis/exodermis, cortex, stele roots. Expression OsYSL15 root epidermis was induced by deficiency showed daily fluctuation. restored a yeast mutant defective uptake when supplied with iron(III)-deoxymugineic transported Xenopus laevis...

10.1074/jbc.m806042200 article EN cc-by Journal of Biological Chemistry 2008-12-03

Ideal interaction-free magnetite nanoparticles were prepared, and their magnetic properties measured to clarify the true nature of anisotropy individual at nanoscale analyze shape, surface, crystalline contributions. Spherical (17.7 nm), cubic (10.6 octahedral-shaped with average sizes ranging from 7.6 23.4 nm synthesized using solution techniques. Then, these coated silica appropriate shell thicknesses prepare samples, noninteractive was confirmed through first-order reversal curve...

10.1021/acsnano.0c02521 article EN ACS Nano 2020-06-23

Abstract Advanced optical applications of fluorescent carbon dots (C-dots) require highly integrated host-guest solid-state materials with a careful design C-dots – matrix interface to control the response. We have developed new synthesis based on grafting an organo-functional silane (3-glycidyloxypropyltrimethoxysilane, GPTMS) amino-functionalized C-dots, which enables fabrication organosilica-based hybrid organic-inorganic films through sol-gel process. The GPTMS onto has been achieved via...

10.1038/s41598-017-05540-5 article EN cc-by Scientific Reports 2017-07-10

A one-pot approach making use of a zinc oxide sol precursor and carbon quantum dots, together with partially fluorinated block copolymer as templating agent, has been used to synthesize porous matrix characterized by interesting energy transfer properties. The choice the surfactant for inducing porosity into inorganic allowed an easy removal agent at low temperature, preserving same time functional properties dots. resulting nanocomposite films have steady-state 3D mapping that evidenced...

10.1021/jp510661d article EN The Journal of Physical Chemistry C 2015-01-07

The optical properties of microwave-synthesized carbon dots dispersed in water and mesoporous ordered silica are reported. fluorescence characteristics bare compared to those nitrogen-doped samples, nitrogen doping being exploited increase the emission efficiency. Two bands blue-green region, at about 430 520 nm, singled out by exciting samples far UV (250 nm), near (350 visible (at 420 nm). analysis excitation/emission maps allows discussing wavelength tunability CD features, singling...

10.1021/acs.jpcc.8b08012 article EN The Journal of Physical Chemistry C 2018-10-16

Abstract Ten-eleven translocation (TET) proteins are dioxygenases that sequentially oxidize the methyl group of 5-methylcytosine (5mC) to 5-hydroxymethylcytosine (5hmC), 5-formylcytosine (5fC) and 5-carboxylcytosine (5caC). All three epigenetic modifications intermediates in DNA demethylation. In “passive” (replication-dependent) demethylation pathway, sequential oxidation reactions by TETs essential modified cytosines (C) diluted at each cycle replication. “active” (replication-independent)...

10.1093/intimm/dxaf006 article EN other-oa International Immunology 2025-02-08

Abstract Endoscopy, a crucial, minimally invasive medical procedure, is poised for significant advancements in the integration of cutting‐edge optical technologies. Although rare‐earth‐doped single‐crystal phosphors offer high‐luminance white light at their endoscope tips via external excitation wavelength conversion element, cost, toxicity, and complex fabrication processes limit widespread adoption. This study presents novel approach to development biocompatible, cost‐effective endoscopic...

10.1002/admi.202401015 article EN cc-by Advanced Materials Interfaces 2025-03-17

Urea-denatured α-zein was almost completely hydrolyzed into small peptides by digestion with 1/100 (w/w) of thermolysin at 37°C for 3h. The angiotensin I-converting enzyme (ACE) inhibitory activity (IC50) the digest total 24.5μg/ml, and most peptide fractions from Z19 separated reverse-phase HPLC had more or less ACE activity. From these fractions, thirty-six peptides, including 5 dipeptides, 14 tripeptides, 9 tetrapeptides, pentapeptides, 3 hexapeptides, were purified their amino acid...

10.1271/bbb.60.661 article EN Bioscience Biotechnology and Biochemistry 1996-01-01

Adaptive surface wrinkles are demonstrated to exhibit a peristaltic motion and size-selective transportation of micro-objects under thermal stimulus. The bilayered materials made thermoresponsive poly(N-iso-propylacrylamide) hybrid silica form responsive submillimeter dimensions with temperature variation. This hydrogel-based actuation works in near-physiological environment, which meets the critical requirement for artificial alternatives bioapplications. Soft microactuators...

10.1002/admi.201500802 article EN cc-by Advanced Materials Interfaces 2016-02-22

Stimuli-response on hierarchically-structured surface wrinkles is required for advanced filtration, catalysis and sensing applications. Although conventional processes can form hierarchical wrinkles, incorporation of stimuli-responsive features has not been achieved, limiting the potential multi-scale functionality wrinkles. Here, we demonstrate a novel process that fabricate structures silica−polymer hybrid films through precisely controlled UV-polymerization sol-gel condensation. Starting...

10.1038/srep00683 article EN cc-by-nc-sa Scientific Reports 2012-09-21

Development of a technology for the synthesis monometallic or multimetallic nanoparticles is exceptionally vital preparation novel magnetic, optical. and catalytic functional materials. In this context, polyol process safe scalable method metal with controlled sizes shapes in large scales. However, there no systematic investigation that discusses criteria selection salt solvent type determine kinetics reduction reaction influences morphology particles. Consequently, design metallic...

10.1021/acs.inorgchem.0c03266 article EN Inorganic Chemistry 2021-02-16

Two-dimensional materials modified with low molecular weight species are known to show unique electronic properties. In this study, we focus on the synthesis and electrochemical investigation of metal hydroxide salt monolayer nanoparticles different molecules toward improved functions. Nickel carboxylate were successfully prepared through epoxide-mediated alkalinization method using alkylcarboxylates. It was found that a size approximately 2 nm formed directly from an ionic precursor or...

10.1021/acsmaterialslett.2c00411 article EN ACS Materials Letters 2022-07-05

The V830R/AV's real-time decoding of MPEG-2 video and audio data enables practical embedded-processor-based multimedia systems.

10.1109/40.671401 article EN IEEE Micro 1998-01-01

Background and Objective The management of middle-aged elderly patients with catatonic schizophrenia has long been a major problem in clinical geriatric psychiatry. Most cases are intractable because medication resistance, intolerance, or severe medical conditions. Electroconvulsive therapy (ECT) is recognized as one the most efficacious therapies for schizophrenia. Thus, we conducted prospective study short-term effect acute ECT on Materials Methods Subjects were nine consecutive older than...

10.1097/00124509-200306000-00003 article EN Journal of Ect 2003-06-01

Schizophrenia is a serious psychiatric disorder that develops mainly in young adults. Electroconvulsive therapy (ECT) known to be effective and safe patients with schizophrenia acute psychotic exacerbation. Because of the shortage systematic studies, we conducted prospective naturalistic study examine short-term effects ECT its safety adults medically intractable first-episode schizophrenia. Subjects were seven consecutive patients, 15-35 years age, or schizophreniform (Diagnostic...

10.1620/tjem.210.213 article EN The Tohoku Journal of Experimental Medicine 2006-01-01

A 2.0 Gb/s clock-embedded interface for LCD drivers, Advanced-PPmL¿, has been developed high-speed data transfer and reduced area in transmission media. Only one pair of differential signals is needed to control the driver display images. newly 1/5-rate phase frequency detector helps achieve a 25% power reduction compared with half-rate architecture. Pulse filtering 4B5B-based protocol have noise-tolerant clock recovery. Power consumption recovery (CDR) 93 mW 3.0 V supply. The rms jitter...

10.1109/jssc.2009.2031024 article EN IEEE Journal of Solid-State Circuits 2009-12-01

Multifunctional nanoparticles (NPs) exhibiting high magnetic property and plasmonic resonance are expected to be advanced nanomaterials which enable therapy, detection, diagnosis simultaneously for medical applications. To achieve the practical performance of multifunctional NPs, precise design synthesis both required. In this work, considering chemical stability controllability, Co–Pt@Au core–shell exhibit resonance, were theoretically designed based on calculation then experimentally...

10.1021/acsanm.9b02040 article EN ACS Applied Nano Materials 2019-12-06

Co-Ni alloy nanoparticles, a potential candidate for microwave absorption material, were successfully synthesized by tuning the reduction timing of Co and Ni ions introducing oleylamine as complexing agent 1-heptanol reducing solvent. The formation mechanism elucidated using time-resolved sampling in situ X-ray spectroscopy (XAS) ultraviolet-visible (UV-vis) spectrophotometry measurements suggested that delay via complexation with facilitated co-reduction led to alloys. successful synthesis...

10.1021/acs.inorgchem.2c02633 article EN Inorganic Chemistry 2022-10-17

We encountered 2 patients with a psychiatric disorder (depression in one and catatonia one) accompanied by motor inhibition that was complicated pulmonary embolism (PE). In both cases, the safely resolved electroconvulsive therapy (ECT) during anticoagulant therapy. The cases direct our attention to at least 3 important points regarding safe administration of ECT shortly after occurrence PE, is, careful evaluation cardiac function residual deep vein thrombosis before start an course,...

10.1097/yct.0b013e31816c434a article EN Journal of Ect 2008-12-01
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