http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
오카다타카오(Okada Takao) 대한설비공학회 1992 대한설비공학회 강연회 및 기타간행물 Vol.- No.-
종래의 클린룸에서 중요한 과제였던 청정도, 온ㆍ습도, 실내압, 기류, 정전기, 전자파, 소음 등의 기술은 거의 완성된 단계에 있으며, 측정입경 0.01㎛에서 1cfm의 성능을 갖는 계측기의 실용화가 요구되고 있다. 향후의 반도체 제조 프로세스로서는 불활성 가스 중에서 처리하는 밀폐형의 것이 있지만 아직 실용화 단계는 이르다. 클린룸내에서 제어해야 되는 Factor로서는 공기중의 불순물(유기물, 무기물, 알칼리 금속, 중금속, 수분) 등을 들 수 있으며, 이에 따른 제거시스템의 개발이 요구된다. 그리고 클린룸의 저코스트화, 에너지절약, 안전, 쾌적성 증대 등의 문제들도 향후 중요시 되리라 본다. 1. 클린룸 공기중 ㎚사이즈의 입자생성에 관한 연구 슈퍼 클린룸에서 ULPA 필터로 부터의 취출공기 중에는 3㎚ 이상의 입자는 1cfm당 수개 정도에 불과하며, 청정공기중에 이온을 발생시키면 수화물의 초미립자가 생성되는 것을 알 수 있다. 이러한 초미립자의 입경은 2.5~3.0㎚ 정도임이 밝혀졌다. 이러한 크기의 미립자는 16M DRAM과 64M DRAM의 제조공정상에는 크게 영향을 미치지는 않지만 향후에는 제어되리라 생각한다. 이러한 입자의 크기보다는 입자의 자체성분(유기물 오염, 중금속 오염)이 문제가 될 수 있다. 2. 클린룸의 구성재로부터의 탈유기 가스의 평가 클린룸 구성재인 실리콘실링 재료, 도료, 파티션 재료, ULPA필터의 구성재 등으로 부터 발생되는 유기가스를 가스크로마토그래피에 의해 정성정량분석을 했다. 그 결과 클린룸의 구성재 중에서는 도료, 실리콘 실링재로부터 많이 발생되는 것이 판명되었다.
Tsuneaki Takao,Seiji Okada,Yuichiro Morishita,Takeshi Maeda,Kensuke Kubota,Ryosuke Ideta,Eiji Mori,Itaru Yugue,Osamu Kawano,Hiroaki Sakai,Takayoshi Ueta,Keiichiro Shiba 대한척추외과학회 2016 Asian Spine Journal Vol.10 No.3
Study Design: Retrospective case series. Purpose: To clarify the influence of cervical spinal canal stenosis (CSCS) on neurological functional recovery after traumatic cervical spinal cord injury (CSCI) without major fracture or dislocation Overview of Literature: The biomechanical etiology of traumatic CSCI remains under discussion and its relationship with CSCS is one of the most controversial issues in the clinical management of traumatic CSCI. Methods: To obtain a relatively uniform background, patients non-surgically treated for an acute C3–4 level CSCI without major fracture or dislocation were selected. We analyzed 58 subjects with traumatic CSCI using T2-weighted mid-sagittal magnetic resonance imaging. The sagittal diameter of the cerebrospinal fluid (CSF) column, degree of canal stenosis, and neurologic outcomes in motor function, including improvement rate, were assessed. Results: There were no significant relationships between sagittal diameter of the CSF column at the C3–4 segment and their American Spinal Injury Association motor scores at both admission and discharge. Moreover, no significant relationships were observed between the sagittal diameter of the CSF column at the C3-4 segment and their neurological recovery during the following period. Conclusions: No relationships between pre-existing CSCS and neurological outcomes were evident after traumatic CSCI. These results suggest that decompression surgery might not be recommended for traumatic CSCI without major fracture or dislocation despite pre-existing CSCS.
Study of Flow Field and Pressure Distribution on a Rotor Blade of HAWT in Yawed Flow Conditions
Maeda, Takao,Kamada, Yasunari,Okada, Naohiro,Suzuki, Jun Korean Society for Fluid machinery 2010 International journal of fluid machinery and syste Vol.3 No.4
This paper describes the flow field and the blade pressure distribution of a horizontal axis wind turbine in various yawed flow conditions. These measurements were carried out with 2.4m-diameter rotor with pressure sensors and a 2-dimensional laser Doppler velocimeter for each azimuth angle in a wind tunnel. The results show that aerodynamic forces of the blade based on the pressure measurements change according to the local angle of attack during rotation. Therefore the wake of the yawed rotor becomes asymmetric for the rotor axis. Furthermore, the relations between aerodynamic forces and azimuth angles change according to tip speed ratio. By the experimental analysis, the flow field and the aerodynamic forces for each azimuth angle in yawed flow condition were clarified.
Hiroshi Kataoka,Yohei Okada,Takao Kiriyama,Yorihiro Kita,Junji Nakamura,Shu Morioka,Koji Shomoto,Satoshi Ueno 대한파킨슨병및이상운동질환학회 2016 Journal Of Movement Disorders Vol.9 No.1
Objective Galvanic vestibular stimulation (GVS) activates the vestibular afferents, and these changes in vestibular input exert a strong influence on the subject’s posture or standing balance. In patients with Parkinson’s disease (PD), vestibular dysfunction might contribute to postural instability and gait disorders. Methods Current intensity was increased to 0.7 mA, and the current was applied to the patients for 20 minutes. To perform a sham stimulation, the current intensity was increased as described and then decreased to 0 mA over the course of 10 seconds. The patient’s status was recorded continuously for 20 minutes with the patient in the supine position. Results Three out of 5 patients diagnosed with PD with postural instability and/or abnormal axial posture showed a reduction in postural instability after GVS. The score for item 12 of the revised Unified Parkinson’s Disease Rating Scale part 3 was decreased in these patients. Conclusions The mechanism of postural instability is complex and not completely understood. In 2 out of the 5 patients, postural instability was not changed in response to GVS. Nonetheless, the GVS-induced change in postural instability for 3 patients in our study suggests that GVS might be a therapeutic option for postural instability
( Yoshiyasu Kono ),( Hiroyuki Okada ),( Ryuta Takenaka ),( Ko Miura ),( Hiromitsu Kanzaki ),( Keisuke Hori ),( Masahide Kita ),( Takao Tsuzuki ),( Seiji Kawano ),( Yoshiro Kawahara ),( Kazuhide Yamamo 대한소화기기능성질환·운동학회 2016 Gut and Liver Vol.10 No.1
Background/Aims: The interaction between nonsteroidal anti-inflammatory drugs (NSAIDs) and Helicobacter pylori remains controversial. We retrospectively investigated whether H. pylori infection exacerbates severe gastric mucosal injury among chronic NSAID users. Methods: From January 2010 to December 2013, a total of 245 long-term NSAID (including low-dose aspirin) users who had undergone an esophagogastroduodenoscopy and had been evaluated for H. pylori infection were enrolled at Okayama University Hospital and Tsuyama Chuo Hospital. The degree of gastric mucosal injury was assessed according to the modified Lanza score (MLS). Severe gastric mucosal injury was defined as an MLS ≥4. Univariate and multivariate logistic regression analyses were performed. Results: In the univariate analysis, age ≥75 years (odds ratio [OR], 2.4; 95% confidence interval [CI], 1.3 to 4.2), H. pylori-positivity (OR, 2.0; 95% CI, 1.2 to 3.5), and the concomitant use of proton pump inhibitors (PPIs) (OR, 0.48; 95% CI, 0.26 to 0.86) were significantly associated with severe gastric mucosal injury. The multivariate analysis was adjusted by age and sex and demonstrated that H. pylori-positivity (OR, 1.8; 95% CI, 1.0 to 3.3) and the concomitant use of PPIs (OR, 0.53; 95% CI, 0.28 to 0.99) significantly contributed to severe gastric mucosal injury. Conclusions: H. pylori infection exacerbates severe gastric mucosal injury among chronic NSAID users. (Gut Liver 2016;10:69-75)