The Experts below are selected from a list of 39048 Experts worldwide ranked by ideXlab platform
Masayoshi Nakashima - One of the best experts on this subject based on the ideXlab platform.
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full scale shaking table test of a base isolated Medical Facility subjected to vertical motions
Earthquake Engineering & Structural Dynamics, 2013Co-Authors: Sachi Furukawa, Eiji Sato, Yundong Shi, Tracy C. Becker, Masayoshi NakashimaAbstract:SUMMARY Base isolation is a well known technology that has been proven to reduce structural response to horizontal ground accelerations. However, vertical response still remains a topic of concern for base-isolated buildings, perhaps more so than in fixed-base buildings as isolation is often used when high performance is required. To investigate the effects of vertical response on building contents and nonstructural components, a series of full-scale shaking table tests were conducted at the E-Defense Facility in Japan. A four-story base-isolated reinforced concrete building was outfitted as a Medical Facility with a wide variety of contents, and the behavior of the contents was observed. The rubber base isolation system was found to significantly amplify vertical accelerations in some cases. However, the damage caused by the vertical ground motions was not detrimental when peak vertical floor accelerations remained below 2 g with three exceptions: (1) small items placed on shelves slid or toppled; (2) objects jumped when placed on nonrigid furniture, which tended to increase the response; and (3) equipment with vertical eccentricities rocked and jumped. In these tests, all equipment and nonstructural components remained functional after shaking. Copyright © 2013 John Wiley & Sons, Ltd.
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Full‐scale shaking table test of a base‐isolated Medical Facility subjected to vertical motions
Earthquake Engineering & Structural Dynamics, 2013Co-Authors: Sachi Furukawa, Eiji Sato, Yundong Shi, Tracy C. Becker, Masayoshi NakashimaAbstract:SUMMARY Base isolation is a well known technology that has been proven to reduce structural response to horizontal ground accelerations. However, vertical response still remains a topic of concern for base-isolated buildings, perhaps more so than in fixed-base buildings as isolation is often used when high performance is required. To investigate the effects of vertical response on building contents and nonstructural components, a series of full-scale shaking table tests were conducted at the E-Defense Facility in Japan. A four-story base-isolated reinforced concrete building was outfitted as a Medical Facility with a wide variety of contents, and the behavior of the contents was observed. The rubber base isolation system was found to significantly amplify vertical accelerations in some cases. However, the damage caused by the vertical ground motions was not detrimental when peak vertical floor accelerations remained below 2 g with three exceptions: (1) small items placed on shelves slid or toppled; (2) objects jumped when placed on nonrigid furniture, which tended to increase the response; and (3) equipment with vertical eccentricities rocked and jumped. In these tests, all equipment and nonstructural components remained functional after shaking. Copyright © 2013 John Wiley & Sons, Ltd.
Eiji Sato - One of the best experts on this subject based on the ideXlab platform.
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full scale shaking table test of a base isolated Medical Facility subjected to vertical motions
Earthquake Engineering & Structural Dynamics, 2013Co-Authors: Sachi Furukawa, Eiji Sato, Yundong Shi, Tracy C. Becker, Masayoshi NakashimaAbstract:SUMMARY Base isolation is a well known technology that has been proven to reduce structural response to horizontal ground accelerations. However, vertical response still remains a topic of concern for base-isolated buildings, perhaps more so than in fixed-base buildings as isolation is often used when high performance is required. To investigate the effects of vertical response on building contents and nonstructural components, a series of full-scale shaking table tests were conducted at the E-Defense Facility in Japan. A four-story base-isolated reinforced concrete building was outfitted as a Medical Facility with a wide variety of contents, and the behavior of the contents was observed. The rubber base isolation system was found to significantly amplify vertical accelerations in some cases. However, the damage caused by the vertical ground motions was not detrimental when peak vertical floor accelerations remained below 2 g with three exceptions: (1) small items placed on shelves slid or toppled; (2) objects jumped when placed on nonrigid furniture, which tended to increase the response; and (3) equipment with vertical eccentricities rocked and jumped. In these tests, all equipment and nonstructural components remained functional after shaking. Copyright © 2013 John Wiley & Sons, Ltd.
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Full‐scale shaking table test of a base‐isolated Medical Facility subjected to vertical motions
Earthquake Engineering & Structural Dynamics, 2013Co-Authors: Sachi Furukawa, Eiji Sato, Yundong Shi, Tracy C. Becker, Masayoshi NakashimaAbstract:SUMMARY Base isolation is a well known technology that has been proven to reduce structural response to horizontal ground accelerations. However, vertical response still remains a topic of concern for base-isolated buildings, perhaps more so than in fixed-base buildings as isolation is often used when high performance is required. To investigate the effects of vertical response on building contents and nonstructural components, a series of full-scale shaking table tests were conducted at the E-Defense Facility in Japan. A four-story base-isolated reinforced concrete building was outfitted as a Medical Facility with a wide variety of contents, and the behavior of the contents was observed. The rubber base isolation system was found to significantly amplify vertical accelerations in some cases. However, the damage caused by the vertical ground motions was not detrimental when peak vertical floor accelerations remained below 2 g with three exceptions: (1) small items placed on shelves slid or toppled; (2) objects jumped when placed on nonrigid furniture, which tended to increase the response; and (3) equipment with vertical eccentricities rocked and jumped. In these tests, all equipment and nonstructural components remained functional after shaking. Copyright © 2013 John Wiley & Sons, Ltd.
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519 Full-scale Shaking Table Tests for Improvement of Functional Maintenance in Medical Facility against Earthquake
The Proceedings of the Dynamics & Design Conference, 2011Co-Authors: Eiji Sato, Hisanobu Sakai, Takahito Inoue, Kouichi Kajiwara, Atsuo Kakehi, Kenichi Kobayashi, Takayoshi KamadaAbstract:This research focuses on a hospital as one of the most critical facilities. The goal of this research is to improve seismic performance and function maintenance performance of the Medical facilities and to ensure that the injured and wounded could be treated promptly after a major earthquake. Therefore shake table tests with the realistic hospital building specimen were conducted for the first time in the world. Some serious damages on the function occurred on the base-fixed structure against the large short-period ground motions and the seismic isolation structure against the long-period and the long-duration ground motions. The shake table tests on the Medical Facility prepared for the measures to prevent the damages were conducted again, and function maintenance performance of the Medical facilities with the measures was verified. It was confirmed that the function of the Medical facilities was maintained enough on the seismic isolation structure with the measures.
Sachi Furukawa - One of the best experts on this subject based on the ideXlab platform.
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full scale shaking table test of a base isolated Medical Facility subjected to vertical motions
Earthquake Engineering & Structural Dynamics, 2013Co-Authors: Sachi Furukawa, Eiji Sato, Yundong Shi, Tracy C. Becker, Masayoshi NakashimaAbstract:SUMMARY Base isolation is a well known technology that has been proven to reduce structural response to horizontal ground accelerations. However, vertical response still remains a topic of concern for base-isolated buildings, perhaps more so than in fixed-base buildings as isolation is often used when high performance is required. To investigate the effects of vertical response on building contents and nonstructural components, a series of full-scale shaking table tests were conducted at the E-Defense Facility in Japan. A four-story base-isolated reinforced concrete building was outfitted as a Medical Facility with a wide variety of contents, and the behavior of the contents was observed. The rubber base isolation system was found to significantly amplify vertical accelerations in some cases. However, the damage caused by the vertical ground motions was not detrimental when peak vertical floor accelerations remained below 2 g with three exceptions: (1) small items placed on shelves slid or toppled; (2) objects jumped when placed on nonrigid furniture, which tended to increase the response; and (3) equipment with vertical eccentricities rocked and jumped. In these tests, all equipment and nonstructural components remained functional after shaking. Copyright © 2013 John Wiley & Sons, Ltd.
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Full‐scale shaking table test of a base‐isolated Medical Facility subjected to vertical motions
Earthquake Engineering & Structural Dynamics, 2013Co-Authors: Sachi Furukawa, Eiji Sato, Yundong Shi, Tracy C. Becker, Masayoshi NakashimaAbstract:SUMMARY Base isolation is a well known technology that has been proven to reduce structural response to horizontal ground accelerations. However, vertical response still remains a topic of concern for base-isolated buildings, perhaps more so than in fixed-base buildings as isolation is often used when high performance is required. To investigate the effects of vertical response on building contents and nonstructural components, a series of full-scale shaking table tests were conducted at the E-Defense Facility in Japan. A four-story base-isolated reinforced concrete building was outfitted as a Medical Facility with a wide variety of contents, and the behavior of the contents was observed. The rubber base isolation system was found to significantly amplify vertical accelerations in some cases. However, the damage caused by the vertical ground motions was not detrimental when peak vertical floor accelerations remained below 2 g with three exceptions: (1) small items placed on shelves slid or toppled; (2) objects jumped when placed on nonrigid furniture, which tended to increase the response; and (3) equipment with vertical eccentricities rocked and jumped. In these tests, all equipment and nonstructural components remained functional after shaking. Copyright © 2013 John Wiley & Sons, Ltd.
Junko Sugama - One of the best experts on this subject based on the ideXlab platform.
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incidence of skin tears in the extremities among elderly patients at a long term Medical Facility in japan a prospective cohort study
Geriatrics & Gerontology International, 2015Co-Authors: Hiromi Sanada, Gojiro Nakagami, Yuiko Koyano, Shinji Iizaka, Junko SugamaAbstract:Aim There is a lack of data from cohort studies for the incidence of skin tears among an elderly population in an Asian country. We estimated the cumulative incidence of skin tear, and identify its risk factor. Methods The present prospective cohort study was carried out at a long-term Medical Facility in Japan. Participants included patients (n = 368) aged 65 years or older receiving hospital care. The 3-month cumulative incidence of skin tears was estimated by identifying them using direct inspection of the extremities. In order to find the risk factors for the skin tear incidence, odds ratios and their 95% confidence intervals of skin tear development in association with the factors were estimated using logistic regression analyses. Results A total of 14 patients developed skin tears, and their cumulative incidence was 3.8%. No patients with skin tears developed multiple wounds on their extremities. Half of the skin tears occurred on the outside of the right forearm, and just three skin tears were found in the lower legs. Multiple logistic analyses showed that pre-existing skin tears (odds ratio 15.42, 95% confidence interval 3.53–67.43, P < 0.001) and a 6-point decrease in the total score of the Braden Scale (odds ratio 0.10, 95% confidence interval 0.01–0.83, P < 0.033) were significantly associated with skin tear development. Conclusions Patients with pre-existing skin tears and a low score of the Braden Scale have a higher risk of skin tear development during 3 months. These factors could be used to identify patients requiring prevention care for skin tears. Geriatr Gerontol Int 2015; 15: 1058–1063.
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Incidence of skin tears in the extremities among elderly patients at a long-term Medical Facility in Japan: A prospective cohort study.
Geriatrics & gerontology international, 2014Co-Authors: Hiromi Sanada, Gojiro Nakagami, Yuiko Koyano, Shinji Iizaka, Junko SugamaAbstract:Aim There is a lack of data from cohort studies for the incidence of skin tears among an elderly population in an Asian country. We estimated the cumulative incidence of skin tear, and identify its risk factor. Methods The present prospective cohort study was carried out at a long-term Medical Facility in Japan. Participants included patients (n = 368) aged 65 years or older receiving hospital care. The 3-month cumulative incidence of skin tears was estimated by identifying them using direct inspection of the extremities. In order to find the risk factors for the skin tear incidence, odds ratios and their 95% confidence intervals of skin tear development in association with the factors were estimated using logistic regression analyses. Results A total of 14 patients developed skin tears, and their cumulative incidence was 3.8%. No patients with skin tears developed multiple wounds on their extremities. Half of the skin tears occurred on the outside of the right forearm, and just three skin tears were found in the lower legs. Multiple logistic analyses showed that pre-existing skin tears (odds ratio 15.42, 95% confidence interval 3.53–67.43, P
Yuiko Koyano - One of the best experts on this subject based on the ideXlab platform.
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incidence of skin tears in the extremities among elderly patients at a long term Medical Facility in japan a prospective cohort study
Geriatrics & Gerontology International, 2015Co-Authors: Hiromi Sanada, Gojiro Nakagami, Yuiko Koyano, Shinji Iizaka, Junko SugamaAbstract:Aim There is a lack of data from cohort studies for the incidence of skin tears among an elderly population in an Asian country. We estimated the cumulative incidence of skin tear, and identify its risk factor. Methods The present prospective cohort study was carried out at a long-term Medical Facility in Japan. Participants included patients (n = 368) aged 65 years or older receiving hospital care. The 3-month cumulative incidence of skin tears was estimated by identifying them using direct inspection of the extremities. In order to find the risk factors for the skin tear incidence, odds ratios and their 95% confidence intervals of skin tear development in association with the factors were estimated using logistic regression analyses. Results A total of 14 patients developed skin tears, and their cumulative incidence was 3.8%. No patients with skin tears developed multiple wounds on their extremities. Half of the skin tears occurred on the outside of the right forearm, and just three skin tears were found in the lower legs. Multiple logistic analyses showed that pre-existing skin tears (odds ratio 15.42, 95% confidence interval 3.53–67.43, P < 0.001) and a 6-point decrease in the total score of the Braden Scale (odds ratio 0.10, 95% confidence interval 0.01–0.83, P < 0.033) were significantly associated with skin tear development. Conclusions Patients with pre-existing skin tears and a low score of the Braden Scale have a higher risk of skin tear development during 3 months. These factors could be used to identify patients requiring prevention care for skin tears. Geriatr Gerontol Int 2015; 15: 1058–1063.
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Incidence of skin tears in the extremities among elderly patients at a long-term Medical Facility in Japan: A prospective cohort study.
Geriatrics & gerontology international, 2014Co-Authors: Hiromi Sanada, Gojiro Nakagami, Yuiko Koyano, Shinji Iizaka, Junko SugamaAbstract:Aim There is a lack of data from cohort studies for the incidence of skin tears among an elderly population in an Asian country. We estimated the cumulative incidence of skin tear, and identify its risk factor. Methods The present prospective cohort study was carried out at a long-term Medical Facility in Japan. Participants included patients (n = 368) aged 65 years or older receiving hospital care. The 3-month cumulative incidence of skin tears was estimated by identifying them using direct inspection of the extremities. In order to find the risk factors for the skin tear incidence, odds ratios and their 95% confidence intervals of skin tear development in association with the factors were estimated using logistic regression analyses. Results A total of 14 patients developed skin tears, and their cumulative incidence was 3.8%. No patients with skin tears developed multiple wounds on their extremities. Half of the skin tears occurred on the outside of the right forearm, and just three skin tears were found in the lower legs. Multiple logistic analyses showed that pre-existing skin tears (odds ratio 15.42, 95% confidence interval 3.53–67.43, P
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Exploring the prevalence of skin tears and skin properties related to skin tears in elderly patients at a long-term Medical Facility in Japan.
International wound journal, 2014Co-Authors: Yuiko Koyano, Gojiro Nakagami, Shinji Iizaka, Takeo Minematsu, Hiroshi Noguchi, Nao Tamai, Yuko Mugita, Aya Kitamura, Keiko Tabata, Masatoshi AbeAbstract:The identification of appropriate skin tear prevention guidelines for the elderly requires clinicians to focus on local risk factors such as structural alterations of the epidermis and dermis related to skin tears. The aim of this cross-sectional study is to explore the prevalence of skin tears and to explore skin properties related to skin tears in elderly Japanese patients at a long-term Medical Facility. After doing the prevalence study, 18 participants with skin tears and 18 without were recruited and an evaluation of their skin properties using 20-MHz ultrasonography, skin blotting and also Corneometer CM-825, Skin-pH-meterPH905, VapoMeter, Moisture Meter-D and CutometerMPA580 was undertaken. A total of 410 patients were examined, the median age was 87 years and 73·2% were women. The prevalence of skin tears was 3·9%, and 50% of skin tears occurred on the dorsal forearm. The changes in skin properties associated with skin tears included increased low-echogenic pixels (LEP) by 20-MHz ultrasonography, decreased type IV collagen and matrix metalloproteinase-2, and increased tumour necrosis factor-α by skin blotting. In conclusion, this study suggests that increased dermal LEP, including solar elastosis, may represent a risk factor for skin tears; this indicates that skin tear risk factors might not only represent chronological ageing but also photoageing.