A5101901690- N-Heterocyclic Carbenes in Organic and Inorganic Chemistry
- Conducting polymers and applications
- Polymer Nanocomposite Synthesis and Irradiation
- Nuclear materials and radiation effects
- Electrohydrodynamics and Fluid Dynamics
- Silicone and Siloxane Chemistry
- High voltage insulation and dielectric phenomena
- Radiation Effects and Dosimetry
- GaN-based semiconductor devices and materials
- Concrete Corrosion and Durability
- Organometallic Complex Synthesis and Catalysis
- Magnetic confinement fusion research
- Advanced Data Processing Techniques
- Wood and Agarwood Research
- Advanced optical system design
- Power Transformer Diagnostics and Insulation
- Ga2O3 and related materials
- Molecular Junctions and Nanostructures
- Flame retardant materials and properties
- Recycling and Waste Management Techniques
- Aerosol Filtration and Electrostatic Precipitation
- Non-Destructive Testing Techniques
- Plant Surface Properties and Treatments
- Nuclear Physics and Applications
- Electrodeposition and Electroless Coatings
Ion Technology Center (Japan)
2023-2024
Tokyo University of Agriculture and Technology
2008-2012
TDK (Japan)
2008-2012
Mie University
2000-2004
The University of Tokyo
1980-2000
Keio University
1997
Advanced Science Research Center
1981-1985
Japan Atomic Energy Agency
1984
Inclusion complex formation between polyaniline with emeraldine base and β-cyclodextrin has been studied by the frequency-domain electric birefringence (FEB) spectroscopy in a solution of N-methyl-2-pyrrolidone (NMP) scanning tunneling microscopy (STM). The FEB results show that cyclodextrin changes its conformation from coil to rod at low temperature (below 275 K), some rodlike images are observed on substrate STM. These suggest cyclodextrins threaded onto confine polymer chain one....
Various methods of thermogravimetric analysis were compared in case polystyrene degradation. The reaction order, the activation energy and preexponential factor evaluated from common TG curves experimentally obtained. In most cases a 5-mg sample with 110,000 molecular weight was decomposed at heating rate 10°C/min. found under this experimental condition to be first order 61.0 kcal/mole, though there slight differences depending on analytical used.
The insulation effect of an inclusion complex formed by polyaniline with emeraldine base as a conducting polymer and β-cyclodextrin insulators cyclic form has been studied using the oxidation iodine in solution N-methyl-2-pyrrolidone. When is oxidized solution, color changes from blue to violet. We observed little change at 273 K or considerable delay spectral 288 contrast that without β-cyclodextrin. This suggests conjugated almost completely insulated threaded cyclodextrin molecules...
Lanthanoid (Ln)-doped aluminum nitride (AlN) semiconductors are one candidate for optoelectric devices and single photon sources, although their optical properties less understood. We clarify the room temperature of Ln ion implanted crystal AlN changes upon thermal annealing by up to 1700 °C. Photoluminescence (PL), cathodoluminescence (CL), time-resolved PL praseodymium (Pr), europium (Eu), neodymium (Nd) analyzed. Recovery implantation induced damages diffusion ions also investigated. Our...
The unique electronic and steric features of di(9-anthryl)carbene result in the formation a surprisingly stable trimeric product (see picture). trimer, which neighboring anthracene groups are arranged staggered so as to reduce congestion, forms by coupling at 10 10′ positions, unpaired electrons mainly localized.
Journal of Polymer Science: Physics EditionVolume 22, Issue 3 p. 529-533 Note Mechanical properties electron-irradiated polysulfones T. Sasuga, Sasuga Takasaki Radiation Chemistry Research Establishment, Japan Atomic Energy Institute, Takasaki, Gunma 370-12, JapanSearch for more papers by this authorN. Hayakawa, N. Hayakawa authorK. Yoshida, K. Yoshida author First published: March 1984 https://doi.org/10.1002/pol.1984.180220315Citations: 20AboutPDF ToolsRequest permissionExport citationAdd...
For the application to space thermal management systems, spray cooling characteristics under both reduced and elevated gravity conditions have been experimentally studied with aid of parabolic flights an aircraft, MU-300, during each its flight (10/sup -2/g for 20 seconds) also entry recovery periods trajectory (1.5-2.0g 15-20 seconds). Water FC-72 (perfluorocarbon) were employed as test liquids be sprayed parameters liquid controlled by alternately using three different nozzles adjusting...
Abstract Irradiation (λ > 300 nm) of di(9-anthryl)diazomethane (1) in degassed benzene gave the trimer (3) dianthrylcarbene (2) as main product along with a small amount tetramer (4). The structures those oligomers were characterized caged compounds produced result three- and four-fold coupling at 10 10′ positions 2. Photolysis 1 presence oxygen short wavelength UV light resulted formation di(9-anthryl) ketone (5) anthraquinone (6), while similar irradiation longer 5 9-anthryl...
The in situ adsorption behavior of coumarin, a widely used inhibitor nickel electrodeposition, onto concaved substrate water under an electric field was studied using atomic force microscopy (AFM). AFM images showed that field, coumarin adsorbs more preferentially on the edge concavity than its inside, while preferential bias not observed without field. These results suggest profiled is driven by rather conventionally suggested convective diffusion effect.
Die einzigartigen elektronischen und sterischen Eigenschaften von Di(9-anthryl)carben führen zur Bildung des überraschend stabilen Trimers 1, bei dem die benachbarten Anthraceneinheiten aus Gründen gegeneinander versetzt angeordnet sind. Es entsteht durch Kupplung an der 10- 10′-Position, denen ungepaarten Elektronen hauptsächlich lokalisiert
Abstract This paper reports on the authors’ latest parabolic-flight experiments (November 1996) of spray cooling. Water and FC-72 (perfluorocarbon) were employed alternately as a test liquid sprayed from single full-cone nozzle onto Cr-plated surface an electrically heated copper block (transient cooling experiments) or transparent In2O3-coated glass (steady state in relatively low superheat region). Each experimental run was accomplished during some 15 seconds through which reduced gravity...
In the typical examples of LOCA (loss-of-coolant-accident) simulation, presented by IEEE Std 323-1974, test period was estimated to be three months for BWR and one year PWR. We studied conditions which were expected influence deterioration elastomeric materials used in a nuclear reactor, such as heating or cooling rate first transient part profile, dose effect, effect oxygen environment. Studies have progressed since 1979 JAERI verify an adequacy qualification testing method. this report, we...