Nobuyoshi Saeki

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Flue gases from semiconductor process, per-fluorinated compounds (PFCs) and hydrofluorinated compounds (HFCs) such as NF/sub 3/, CF/sub 4/, C/sub 2/F/sub 6/, CHF/sub 3/ and SF/sub 6/, are being regulated internationally because their gases cause green effect and have more than 5,000 times GWP (Global Warming Potential) in comparison of CO/sub 2/. PFCs are(More)
Flue gases from the semiconductor process, SF/sub 6/, NF/sub 3/, perfluorocarbons (PFCs) such as CF/sub 4/ and C/sub 2/F/sub 6/, and hydrofluorocarbons such as CHF/sub 3/ are being regulated internationally because their gases have extremely large global warming potential in comparison to CO/sub 2/, and they have a long lifetime. PFCs are used for wafer(More)
The performance evaluation of CF/sub 4/ decomposition efficiency using 2- and 4-MHz power supplies was carried out as a function of the power, the pressure, the flow rate, and the quantity of O/sub 2/ addition. When the 2- and 4-MHz power supplies were used, almost complete CF/sub 4/ removal was achieved at 2.0 and 3.0 kW, respectively, when the CF/sub 4/(More)
A method for the protecting group free synthesis of β-urea-linked glycoconjugates has been developed. The one step process, involving reactions between urea and D-glucose, N-acetyl-D-glucosamine or D-xylose in acidic aqueous solution, furnishes the corresponding β-urea glycosides in modest yields. This simple and efficient procedure is applicable to the(More)
We used a three-dimensional audiogram which displays duration of the disease on the X-axis, frequency on the Y-axis, and hearing level on the Z-axis, to aid observation of hearing changes during the course of various otologic diseases. An overall, quantitative view of the changes in a patient's hearing level with time was easily obtainable with this(More)
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