Kenji Kikuchi

ORCID: 0000-0001-8187-6773
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About
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Research Areas
  • Fusion materials and technologies
  • Nuclear Materials and Properties
  • Nuclear reactor physics and engineering
  • Nuclear Physics and Applications
  • Particle accelerators and beam dynamics
  • Structural Behavior of Reinforced Concrete
  • Magnetic confinement fusion research
  • Superconducting Materials and Applications
  • Advanced Polymer Synthesis and Characterization
  • Masonry and Concrete Structural Analysis
  • Advancements in Solid Oxide Fuel Cells
  • Organic Electronics and Photovoltaics
  • Chalcogenide Semiconductor Thin Films
  • High Temperature Alloys and Creep
  • Fuel Cells and Related Materials
  • Structural Load-Bearing Analysis
  • ZnO doping and properties
  • Electronic and Structural Properties of Oxides
  • Fullerene Chemistry and Applications
  • Nuclear and radioactivity studies
  • Ga2O3 and related materials
  • Catalytic Processes in Materials Science
  • Polymer Science and PVC
  • Micro and Nano Robotics
  • Fatigue and fracture mechanics

Tohoku University
2016-2025

Nihonkai General Hospital
2023-2024

Kanazawa Hospital
2023

Louis Pasteur Center for Medical Research
2023

Tohoku University Hospital
2022

Ibaraki University
2009-2021

Hitachi (Japan)
2009-2021

Oita University
2000-2020

Google (United States)
2018

Toyo University
2004-2014

Although diabetes mellitus is known to induce many pathophysiological changes in the skin, none of earlier studies has focused on state stratum corneum (SC) patients with diabetes. In our previous report a diabetic mouse model, we described decreased SC hydration and abnormalities function sebaceous gland together normally retained barrier SC.To examine functional diabetes.The following values were measured 49 diabetes: fasting plasma glucose (FPG) haemoglobin A1c (HbA1c); skin surface lipid...

10.1111/j.1365-2133.2005.06756.x article EN British Journal of Dermatology 2005-07-28

We conducted an elution experiment with contaminated soils using various aqueous reagent solutions and autoradiography measurements of bamboo shoots shiitake mushrooms to determine the physical chemical characteristics radioactive Cs from Fukushima Daiichi Nuclear Power Plant accident. Based on our study results data in literature, we conclude that active emitted by accident fell ground as granular non-ionic materials. Therefore, they were not adsorbed or trapped minerals soil, but instead...

10.1016/j.jenvrad.2013.12.020 article EN cc-by-nc-nd Journal of Environmental Radioactivity 2014-01-18

Sponges, the basalmost members of animal kingdom, exhibit a range complex architectures in which microfluidic channels connect multitudes spherical chambers lined with choanocytes, flagellated filter-feeding cells. Choanocyte can possess scores or even hundreds such cells, drive flows entering through porous walls and exiting into sponge channels. One mysteries choanocyte chamber is its shape, as it seems inappropriate for inducing directional transport since many flagella beat opposition to...

10.1073/pnas.2421296122 article EN cc-by Proceedings of the National Academy of Sciences 2025-03-21

Hydrogen negative ion beams of 507 keV, 1 A and 486 2.8 have been successfully produced in the JT-60U source with a three-stage accelerator by overcoming poor voltage holding large-size grids ∼2 m 2 . This is first result H − beam acceleration up to 500 keV at high current over A. In order improve capability, breakdown voltages small-size electrodes uniform locally strong electric fields were examined changing gap length. It was found that below half field which used design accelerator....

10.1088/0029-5515/51/8/083049 article EN Nuclear Fusion 2011-08-01

✓ The present studies evaluated the effect of phenobarbital, pentobarbital, and thiopental at concentrations comparable to those attained during therapeutic barbiturate-induced coma, on in vitro mitogen-induced lymphocyte activation. Lymphocytes from normal volunteers were incubated for 72 hours culture medium containing mitogen (phytohemagglutinin) a range barbiturates (5 833 µg/ml). Three parameters activation (mitogen-induced blast transformation, 3H-thymidine incorporation, cell...

10.3171/jns.1982.56.2.0254 article EN Journal of neurosurgery 1982-02-01

✓ The present investigation was conducted to examine the effects upon normal lymphocyte activation of addition brain-tumor cyst fluid or cerebrospinal (CSF) an in vitro culture system. It believed that factors these fluids may play a role local and systemic immunosuppression patients. authors evaluated effect fluid, CSF, serum from eight patients with brain tumors (one astrocytoma, five glioblastoma multiforme, one medulloblastoma, microglioma) on mitogen-stimulated function as measured by 3...

10.3171/jns.1983.59.5.0790 article EN Journal of neurosurgery 1983-11-01

The 500 keV negative-ion based neutral beam injector for JT-60U started operations in 1996. availability of the negative ion injection system has been improved gradually by modifying source and optimizing its operation parameters. Recently, extension pulse duration up to 30 s intended study quasi-steady state plasma on JT-60U. most serious issue is reduce heat load grids long operation. Two modifications have proposed load. One suppress spread beamlet-bundle which may be caused...

10.1088/0029-5515/46/6/s02 article EN Nuclear Fusion 2006-05-17

Dye-sensitized solar cells TiO2 with were fabricated. The phase composition and microstructures of the examined by X-ray diffractometry transmission electron microscopy, energy levels present also discussed. results show that a cell mixed xylenol orange rose Bengal shows higher conversion efficiency compared to single dye. An introduction amorphous layers in an improvement efficiency.

10.1016/s1002-0071(12)60045-8 article EN cc-by-nc-nd Progress in Natural Science Materials International 2011-04-01

In this study, we demonstrate the avalanche multiplication phenomenon in a crystalline-selenium (c-Se)-based heterojunction photodiode. The carrier injection from an external electrode, which is considered to be major factor contributing dark current at high electric field, was significantly decreased by employing thin n-type Ga2O3 layer with hole-injection barrier. fabricated Ga2O3/c-Se diode exhibited extremely quantum efficiency of over 100% short-wavelength region relatively low...

10.1063/1.4883649 article EN Applied Physics Letters 2014-06-16
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