8 0 0 0 OA 路面電車の速度向上策の検討(そのII)-運賃収受方法の改善に関する一考察
5 0 0 0 OA 路面電車の速度向上策の検討-停車時間の実態と課題
2 0 0 0 OA レーザ照射スパッタ多結晶シリコン薄膜トランジスタ
- 著者
- 芹川 正 白井 誠一
- 出版者
- The Institute of Electrical Engineers of Japan
- 雑誌
- 電気学会論文誌A(基礎・材料・共通部門誌) (ISSN:03854205)
- 巻号頁・発行日
- vol.110, no.10, pp.675-678, 1990-10-20 (Released:2008-07-15)
- 参考文献数
- 10
1 0 0 0 OA 加速歩行を呈するパーキンソニズム患者のための側方揺動支援システムの開発
- 著者
- 上原 皓 河本 浩明 今井 壽正 白井 誠 曾根 政富 野田 幸子 佐藤 栄人 服部 信孝 山海 嘉之
- 出版者
- 公益社団法人 日本生体医工学会
- 雑誌
- 生体医工学 (ISSN:1347443X)
- 巻号頁・発行日
- vol.57, no.6, pp.206-214, 2019-12-10 (Released:2020-02-29)
- 参考文献数
- 34
Gait festination (GF) is one of the representative locomotion disturbances associated with Parkinsonism, which induces pulsion caused by increased stepping velocity. Fear of falling over and involuntary symptoms caused by GF can have a significant impact on quality of life. Considering previous interventional strategies for GF and their utility in daily life, physical intervention using a wearable system to assist postural disorder and the hastening phenomenon is necessary for patients with GF. The purpose of this study was to develop a wearable system that can assist the patient in extending the trunk and generating internal rhythm. Another objective was to confirm the effectiveness of the system for preventing GF by conducting a gait experiment in a Parkinsonism patient. To design an assistive method, we simulated lateral swing in the standing position based on features of Parkinsonism, and defined the mechanism and power configurations for the system. A power unit at the back of the waist transmits a cyclic force to the chest by a link in the frontal plane. A gait experiment was performed in a Parkinsonism patient with GF to confirm that reduction of the gait cycle is prevented by using the system. The result showed that the linear trendline slope of reduction of the gait cycle decreased. In addition, the maximum stooping angle decreased by half, and the cyclic assistance of the system and gait cycle were harmonized. These results suggest that the system developed is effective in preventing GF by supporting posture and generating internal rhythm.
1 0 0 0 OA Microcystis シアノバクテリアの毒性
1 0 0 0 OA アオコの毒性に関する研究
- 著者
- 白井 誠
- 出版者
- 日本マイコトキシン学会
- 雑誌
- マイコトキシン (ISSN:02851466)
- 巻号頁・発行日
- vol.1996, no.42, pp.3-5, 1996-01-31 (Released:2009-08-04)
- 参考文献数
- 8
- 被引用文献数
- 1
- 著者
- 篠崎 賢二 羅 湘軍 有吉 秀文 黒木 英憲 白井 誠
- 出版者
- 社団法人溶接学会
- 雑誌
- 溶接学会論文集 : quarterly journal of the Japan Welding Society (ISSN:02884771)
- 巻号頁・発行日
- vol.17, no.2, pp.286-293, 1999-05-05
- 被引用文献数
- 11
This study was carried out quantitatively to evaluate the hot cracking susceptibilities of various Ni-base superalloys and the effect of grain size on hot cracking susceptibility during laser welding. Ni-base superalloys used were Inconel 718,Inconel X-750,Inconel 617,Inconel 625,Nimonic 90 Waspaloy, Hastelloy X. The grain size of Inconel 718 varied from about 10 to 110 μm. In this study, the hot craking susceptibility was evaluated by a modified U-type hot cracking tester during CO_2 laser welding. Samples were solution heat-treated before welding and welded with laser powers of 3 and 5 kW and with a traveling speed of 0.5 to 3 m/min. The hot cracking occurring in the weldment during the bead on plate test was reproduced on the U-type hot cracking test. Consequently, the liquation cracking susceptibilities of various Ni-base superalloys decreased in the order of Waspaloy, Inconel 617,Inconel 718,Hastelloy X, Inonel 625,Inconel X-750 and Nimonic 90. Liquation cracking susceptibility of Inconel 718 increased with an increase in grain size.