著者

辻畑 敬治 宮川 奨蔵 大坪 茂 大野 重治 花木 功

出版者

社団法人日本鉄鋼協会

雑誌

鐵と鋼 : 日本鐡鋼協會々誌 (ISSN:00211575)

巻号頁・発行日

vol.46, no.4, pp.455-460, 1960-04-01

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In line with the starting of experiments on the use of self-fluxing sinter in blast furnaces, the experimental production of lime sinter using 5∿10% of lime stone was conducted at Kukioka D. L. Sintering Plant since May, 1958, and from the operation data the following items were inferred : - 1) Although in lime sinter the mean grain size was getting smaller, the amount of the fine fraction (minus five millimeter fraction) became rather decreased than in normal sinter, from which it was inferred that lime sinter was more improved in point of grain distribution. 2) Lime sinter had almost the same degree of strength as normal sinter. 3) By adding 5∿10% of lime stone, the output of sinter was increased by 4∿6.5%. When calculated in terms of iron, the output, however, was almost constant. 4) In case of using the burden of 100% lime sinter, operation was carried out with special attention paid to the control of basicity, and for that purpose such measures as the use of foreign fine ores divided into the three classes according to SiO_2 content, etc. were enforced, and, as the result, the sinter that could almost satisfy the requirements of blast furnaces was able to be produced. 5) Cost of sinter production was decreased by 2% and 5.5% by the addition of 5% and 10% of lime stone, respectively, but the cost in terms of iron was almost unchanged. For these reasons it was concluded that lime sinter was superior to normal sinter.

著者

瀬戸 孝宏 山田 悟 大坪 茂

出版者

独立行政法人 石川工業高等専門学校

雑誌

石川工業高等専門学校紀要 (ISSN:02866110)

巻号頁・発行日

vol.39, pp.19-26, 2007-03-30 (Released:2017-06-01)

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For submicron size device application, the selective laser lift-off using the heat insulation of hydrocarbon film was applied to the patterning of metal thin film. Experimentally, Ni and Cu films were patterned on Si substrates and Pt films were patterned on fused quartz substrates, successfully. For clarifying the mechanism, temperature simulations were carried with for the present laser lift-off technique. As a result, in the laser lift-off process, the temperature of the metal layer did not reach the melting or vaporization point while the temperature of the hydrocarbon layer was found to be elevated above 250℃. These findings require a new mechanism including the vaporization or explosive phenomenon of hydrocarbon layer other than the simple metal evaporation model. In addition, it was found that a temperature characteristic was more suitable for a Si substrate than a fused quartz substrate by a simulation that considered reflectance.

著者

斎藤 千草 大坪 茂 治田 宗徳 池田 智慧美 川原 克恵 後藤 康司 成田 晃子 三和 奈穂子 久保田 孝雄

出版者

東都大学

雑誌

東都大学紀要 = Tohto University bulletin (ISSN:24358878)

巻号頁・発行日

vol.12, no.1, pp.41-50, 2022-05

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当院の透析患者COVID-19感染対策について報告する。従来の感染対策に加え、全職員、患者への疾患の啓発、マスク着用、来院時並びに透析室入室時に手指消毒、毎日検温、透析室入室時にも検温、昼食提供の見直し、感染が疑われる際の電話受けのチェックリスト作成、疑いエリアのリネン等の物品の扱い方の工夫、環境整備、休みやすい勤務体系作り、鼻咽頭ぬぐい検査場所の見直し等を行った。感染疑いの強い患者は導線を分け、裏口より入室し、普段使用していない時間帯のフロアーで隔離透析を行った。その結果、今まで患者150名、スタッフ35名中、血液透析患者1例の感染発生のみで経過している。また、他院より透析室内濃厚接触(疑い含む)13例、家庭内濃厚接触者1例、治療退院直後で維持透析先受け入れ困難3例の合計17例の患者を受け入れた。東京都の血液透析患者のCOVID-19罹患率2.1%に対し、当院の罹患率は0.7%と低値であり、当院の感染対策は効果があったと思われる。(著者抄録)