Kazuo Higashino

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A new bi-directional valve-less silicon micro pump was proposed based on the analysis using an equivalent circuit model, and a performance of the fabricated pump was studied. The flow direction of the pump can be controlled by changing a driving waveform applied to a PZT plate fixed on a diaphragm. The feasibility of this new bidirectional pumping principle(More)
Abstract We examined polychlorinated dibenzo-p-dioxin, polychlorinated dibenzofuran (PCDD/Fs) and dioxin-like compounds formation during brine electrolysis with pitch used as the binding agent of graphite electrode. Graphite electrode was used in the past as an industrial process of chlorine production. The level of PCDFs was up to 1,800,000pg/L(More)
Um die Nebenwirkungen von l-Asparaginase zu kontrollieren, wurde eine Reihe klinischer Versuche an 40 stationären Patienten mit bösartigen Geschwülsten durchgeführt. Dieses Vorgehen beruht auf der Hypothese, daß die meisten l-Asparaginase-Nebenwirkungen auf die durch i.v. Enzymgabe entstehende Hyperammonämie zurückgeführt werden könnten. Die Verabreichung(More)
Soil leaching tests are commonly used to evaluate the leachability of hazardous materials, such as heavy metals, from the soil. Batch leaching tests often enhance soil colloidal mobility and may require solid-liquid separation procedures to remove excess soil particles. However, batch leaching test results depend on particles that can pass through a 0.45μm(More)
Column percolation tests may be suitable for prediction of chemical leaching from soil and soil materials. However, compared with batch leaching tests, they are time-consuming. It is therefore important to investigate ways to shorten the tests without affecting the quality of results. In this study, we evaluate the feasibility of decreasing testing time by(More)
Studies on the formation of polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) during the electrolysis of sodium chloride solution (brine) using graphite or titanium electrodes were carried out at a laboratory scale. High concentrations of PCDFs but no PCDDs were formed in tests using graphite electrodes. With titanium(More)
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