Shuji Tanabe

Learn More
Magnetic iron oxide nanoparticles were successfully prepared by a novel reverse precipitation method with the irradiation of ultrasound. TEM, XRD and SQUID analyses showed that the formed particles were magnetite (Fe(3)O(4)) with about 10nm in their diameter. The magnetite nanoparticles exhibited superparamagnetism above 200K, and the saturation(More)
Aqueous sample solutions containing noble metal ions (HAuCl4, Na2PdCl4, H2PtCl6), polyethyleneglycol monostearate, and magnetic maghemite nanoparticles were irradiated with high power ultrasound. Analyses of the products showed that noble metal ions were reduced by the effects of ultrasound, and the formed noble metal nanoparticles were uniformly(More)
OBJECTIVE Remineralization is an indispensable phenomenon during the natural healing process of enamel decay. The incorporation of zinc (Zn) into enamel crystal could accelerate this remineralization. The present study was designed to investigate the concentration and distribution of Zn in remineralized enamel after gum chewing. METHODS The experiment was(More)
Sonochemically prepared Pt, Au and Pd nanoparticles were successfully immobilized onto TiO2 with the assistance of prolonged sonication. Their photocatalytic activities were evaluated in H2 production from aqueous ethanol solutions. Beside the sonochemical method, the conventional impregnation method was also employed to prepare photocatalysts. The(More)
Individual components of 99mTc(NaBH4)-MDP mixtures, separated by anion exchange HPLC, have been evaluated as skeletal imaging agents in rats. Biodistribution data show that the evaluated components exhibit markedly different bone uptakes and soft tissue localizations. The component with the highest bone uptake and the highest bone/muscle and bone/blood(More)
Anion exchange high performance liquid chromatography has been employed to separate components of 99mTc(NaBH4)-MDP formulations prepared as a function of pH, the presence or absence of 99Tc carrier, and the presence or absence of air. The formulation pH is an effective variable for controlling the generation and interconversion of 99mTc-MDP components, and(More)
Through this project, successful applicants from Korea and China will be accepted into the Graduate School of Engineering Master's Course, that was established in April 2011, at Nagasaki University. They will be trained to become highly skilled professionals with practical knowledge who can contribute to solving water environment conservation issues,(More)
Reduction of 99mTcO4- by NaBH4 in the presence of HEDP leads to a mixture of 99mTc-containing complexes which can be separated by anion exchange high performance liquid chromatography (HPLC). The distribution of complexes within this mixture can be varied by controlling pH, the concentration of HEDP, the concentration of technetium, and the presence of air.(More)
Bimetallic Au/Pd nanoparticles supported on a silica matrix were prepared by an ultrasonic technique. The samples heat-treated at 100, 200, 300 and 400 degrees C were examined with techniques of XRD (X-ray diffraction), TEM and XAS (X-ray absorption spectrometry) for studying correlation between their structure and the catalytic activity of hydrogenation of(More)
Al loaded CaO catalysts for biodiesel synthesis were prepared with alkali co-precipitation method and investigated. The catalytic activities were examined with transesterification of triolein to oleic methyl ester (OME) as model reaction of biodiesel formation. The catalytic activity of these catalysts strongly depends on the amount of Al loading and(More)