Entity

Time filter

Source Type

Hakodate, Japan

Hakodate University is a private university in Hakodate, Hokkaido, Japan, established in 1965. The predecessor of the school was founded in 1938. Wikipedia.


Harima Y.,Hiroshima University | Sanada K.,Hiroshima University | Patil R.,Hiroshima University | Ooyama Y.,Hiroshima University | And 2 more authors.
European Polymer Journal | Year: 2010

Monodisperse and isolated microspheres of poly(N-methylaniline) were successfully prepared through chemical polymerization of N-methylaniline by S2 O82 - in adipic acid containing poly(vinylpyrrolidone) (PVP). Mean diameters of the microspheres with smooth surfaces changed from 320 to 100 nm by increasing the reaction temperature from 25 to 75 °C. The concentration of PVP did not affect much the size of microspheres, but the increased PVP concentration led to longer induction times for the onset of dispersion polymerization. © 2010 Elsevier Ltd. All rights reserved. Source


Jiang X.,Nanjing Normal University | Jiang X.,Hiroshima University | Setodoi S.,Hiroshima University | Fukumoto S.,Hiroshima University | And 5 more authors.
Carbon | Year: 2014

An easy electrochemical technique is proposed to prepare electrochemically reduced graphene oxide (ERGO)/polyaniline (PANI) composites in a single step. The technique uses a two-electrode cell in which a separator soaked with an acid solution is sandwiched between graphene oxide (GO)/aniline films deposited on conductive substrates and an alternating voltage was applied to the electrodes. Successful preparations of ERGO/PANI composites were evidenced by characterizations due to UV-vis-NIR, FT-IR, XPS, XRD, and SEM measurements with free-standing films of ERGO/PANI obtained easily by disassembling the two-electrode cells. The ERGO/PANI films exhibited a high mechanical stability, flexibility, and conductivity (68 S cm-1 for the composite film containing 80% ERGO) with nanostructured PANI particles (smaller than 20 nm) embedded homogeneously between the ERGO layers. The two-electrode cells acted as electrochemical capacitors (ECs) after a sufficient voltage cycling and exhibited relatively large specific capacitances (195- 243 F g-1 at a scan rate of 100 mV s-1) with an excellent cycle life (retention of 83% capacitance after 20,000 charge-discharge cycles). Influences of the GO/aniline ratio, the sort of electrolytes, and the weight of the composite on the energy storage characteristics of ECs comprising the ERGO/PANI composites were also studied. © 2013 Elsevier Ltd. All rights reserved. Source


The labor tribunal system, whieh is a form of alternative dispute resolution rather than a type of lawsuit, requires both parties' agreements to settle disputes and maintains a high settlement rate. As most of parties involved in the system are said to expect that labor problems should be settled fairly, it is assumed that they will readily accept the results of fair procedures. However, it seems that laborers who submit claims for compensation have a different concept of justice than employers or company employees in charge of settlements and this determines the attitudes toward the results. This study conducted a survey of participants in the labor tribunal system, and suggest that laborers attribute the validity of this system's results directly to judges, while company representatives attribute it to the procedure conducted by the judges. Source


Harima Y.,Hiroshima University | Setodoi S.,Hiroshima University | Imae I.,Hiroshima University | Komaguchi K.,Hiroshima University | And 4 more authors.
Electrochimica Acta | Year: 2011

Graphene oxide (GO) cast on conductive substrates was electrochemically reduced in some organic solvents. The amount of electricity required for the almost complete reduction of GO was 2.0 C for 1 mg GO, corresponding to attaching of a one-electron reducible species to each benzene ring in graphene. The electrochemically reduced GO film gave an electrical conductivity of about 3 S cm -1 and exhibited a relatively high specific capacitance of 147.2 F g -1 in propylene carbonate. The electrochemical reduction of GO was feasible on Al foils as well. © 2011 Elsevier Ltd. Source


Hakodate University | Entity website

Discover hidden collaborations