- 著者
- Hyunho SHIN Hun-Joo LEE Yo-Han YOO Woong LEE
- 出版者
- The Japan Society of Mechanical Engineers
- 雑誌
- JSME International Journal Series A Solid Mechanics and Material Engineering (ISSN:13447912)
- 巻号頁・発行日
- vol.47, no.1, pp.35-41, 2004 (Released:2004-07-15)
- 参考文献数
- 16
- 被引用文献数
- 4 10
A determination procedure for element elimination criterion in finite element simulation of high-strain-rate impact and penetration phenomena, occurring between tungsten heavy alloy long-rod penetrators and steel targets, has been presented with some demonstrations for the validity of the established criterion. The element elimination criterion for the two types of materials have been determined by comparing the simulated depth of penetration (DOP) and deformed shape of the penetrator with previously available experimental results. Although the criterion affects the simulated DOP significantly at the studied impact velocity of 1500m/s, once established, they are shown to be valid in predicting the DOP in the impact velocity range between 1100 and 1750m/s. The events of partial penetration with severe material deformation such as critical ricochet angle and ricochet phenomenology have also been successfully predicted using the established criterion in the similar impact velocity range. Thus it is suggested that the determination procedure for the suitable element erosion criterion is prerequisite in simulating high-strain-rate impact/penetration phenomena and the criterion established by the procedure is useful in fairly broad range of the velocity and for other similar high-strain-rate events.
- 著者
- Masato Ota Kohei Taniguchi Mitsuhiro Asakuma Sang-Woong Lee Yuri Ito
- 出版者
- Japan Epidemiological Association
- 雑誌
- Journal of Epidemiology (ISSN:09175040)
- 巻号頁・発行日
- pp.JE20220347, (Released:2023-12-02)
- 参考文献数
- 28
Background: The COVID-19 pandemic has affected cancer care. The aim of this study was to clarify the trend of colorectal cancer (CRC) stage distribution in Japan during the COVID-19 pandemic.Methods: In this retrospective study, we used an inpatient medical claims database established at approximately 400 acute care hospitals. From the database, we searched patients who were identified as having the main disease (using ICD-10codes [C18.0–C20]) between January 2018 and December 2020. A multivariate logistic regression analysis was used to determine the impact of the pandemic on CRC stage distribution each month, and the odds ratio (OR) for late-stage cancer was calculated.Results: We analyzed 99,992 CRC patients. Logistic regression analysis, including the interaction term between increased late-stage CRC effect during the pandemic period and by each individual month, showed that the OR for late-stage CRC was highest in July during the pandemic, at 1.31 (95%CI: 1.13– 1.52) and also significantly higher in September at 1.16 (95%CI: 1.00– 1.35).Conclusion: We investigated the trend of CRC stage distribution during the COVID-19 pandemic using a nationwide hospital-claims database in Japan, and found that the proportion of early-stage cancers tended to decrease temporarily after the state of emergency declaration due to the COVID-19 pandemic, but the effect was only temporary.
- 著者
- Doo-Ho Lee Ji-Su Park Seung-Woong Lee Jong-Bae Choi
- 出版者
- The Society of Physical Therapy Science
- 雑誌
- Journal of Physical Therapy Science (ISSN:09155287)
- 巻号頁・発行日
- vol.29, no.3, pp.556-557, 2017 (Released:2017-03-22)
- 参考文献数
- 7
- 被引用文献数
- 2
[Purpose] The purpose of the present study was to investigate the effects of dysphagia therapy in an old man with difficulty swallowing in the oral and pharyngeal phases. [Subjects and Methods] The subject was a 72-year-old man with no history of neurological disorders. He was admitted to local hospital because of the complaint of swallowing difficulty. The interventions performed were electrical stimulation and conventional dysphagia therapy. We assessed the tongue and lip muscle strengths. Swallowing function was evaluated by using the videofluoroscopic dysphagia and penetration-aspiration scales. [Results] After the intervention, the tongue and lip muscle strengths increased from 35 to 39 kPa and from 18 to 23 kPa, respectively. Moreover, the oral and pharyngeal phases of the videofluoroscopic dysphagia scale were improved. Furthermore, aspiration decreased from 4 to 2 points in the penetration-aspiration scale. [Conclusion] Our results suggest that electrical stimulation and conventional dysphagia therapy were effective in improving the swallowing function in an elderly individual with dysphagia.
- 著者
- 松木 充 可児 弘行 立神 史稔 吉川 秀司 楢林 勇 李 相雄 馬渕 秀明 野村 栄治 奥田 準二 谷川 允彦 マツキ ミツル カニ ヒロユキ タツガミ フミナリ ヨシカワ シュウシ ナラバヤシ イサム サンウォン リー マブチ ヒデアキ ノムラ エイジ オクダ ジュンジ タニガワ ノブヒコ Matsuki Mitsuru Kani Hiroyuki Tatsugami Fuminari Yoshikawa Shushi Narabayashi Isamu Sang-Woong Lee Mabuchi Hideaki Nomura Eiji Okuda Junji Tanigawa Nobuhiko
- 出版者
- 日本医学放射線学会
- 雑誌
- 日本医学放射線学会雑誌 (ISSN:00480428)
- 巻号頁・発行日
- vol.64, no.3, pp.159-161, 2004-03-25