The Experts below are selected from a list of 11583 Experts worldwide ranked by ideXlab platform
M Miyazaki - One of the best experts on this subject based on the ideXlab platform.
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durability of doped zinc oxide silver doped zinc oxide low emissivity coatings in Humid Environment
Thin Solid Films, 2008Co-Authors: Eiichi Ando, M MiyazakiAbstract:Abstract The relationship between internal stress of doped zinc oxide films and durability of doped zinc oxide/silver/doped zinc oxide low emissivity (low-e) coatings in Humid Environment was investigated. Aluminum, titanium, tin, chromium, silicon, gallium, magnesium, boron, barium, and calcium were chosen as a doping element in sputtering targets. Ratios of dopant/zinc in the oxide targets were 4/96–5/95 at.%. Films were formed by radio frequency sputtering. Doping of barium and calcium to the zinc oxide film led to a large increase in the internal stress. Doping of the other elements resulted in decreasing the internal stress. It was concluded that durability of the low-e coatings in Humid Environment closely correlated with the internal stress of the oxide layers.
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Durability of doped zinc oxide/silver/doped zinc oxide low emissivity coatings in Humid Environment
Thin Solid Films, 2008Co-Authors: Eiichi Ando, M MiyazakiAbstract:Abstract The relationship between internal stress of doped zinc oxide films and durability of doped zinc oxide/silver/doped zinc oxide low emissivity (low-e) coatings in Humid Environment was investigated. Aluminum, titanium, tin, chromium, silicon, gallium, magnesium, boron, barium, and calcium were chosen as a doping element in sputtering targets. Ratios of dopant/zinc in the oxide targets were 4/96–5/95 at.%. Films were formed by radio frequency sputtering. Doping of barium and calcium to the zinc oxide film led to a large increase in the internal stress. Doping of the other elements resulted in decreasing the internal stress. It was concluded that durability of the low-e coatings in Humid Environment closely correlated with the internal stress of the oxide layers.
Gen Nakamura - One of the best experts on this subject based on the ideXlab platform.
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effect of Humidity on human comfort and productivity after step changes from warm and Humid Environment
Building and Environment, 2007Co-Authors: Hitomi Tsutsumi, Junkichi Harigaya, Yasuo Iguchi, Shin-ichi Tanabe, Gen NakamuraAbstract:Abstract Subjective experiments were conducted to evaluate the effects of Humidity on human comfort and productivity under transient conditions from hot and Humid Environment to thermally neutral condition. Two climate chambers, “Chamber 1” and “Chamber 2”, adjoined each other were used for this study. Subjects were exposed to 30 °C/70%RH air in Chamber 1 for 15 min with 2.0 met of metabolic rate. Then they moved into Chamber 2, where 4 Humidity conditions, 30, 40, 50 and 70%RH were examined. Air temperature was adjusted to keep SET* constant at 25.2 °C for all conditions. Subjects were exposed in Chamber 2 for 180 min performing 2 kinds of simulated office work. Positive effects of low Humidity on subjective pleasantness were found under transient condition at low Humidity due to more evaporation from human body, while no significant difference in thermal sensation and Humidity sensation among 4 relative Humidity levels was obtained. Subjective performance was found to be at the same level under all conditions. However, subjects reported to be more tired at 70%RH after Humidity step change.
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Effect of Humidity on human comfort and productivity after step changes from warm and Humid Environment
Building and Environment, 2007Co-Authors: Hitomi Tsutsumi, Junkichi Harigaya, Yasuo Iguchi, Shin-ichi Tanabe, Gen NakamuraAbstract:Subjective experiments were conducted to evaluate the effects of Humidity on human comfort and productivity under transient conditions from hot and Humid Environment to thermally neutral condition. Two climate chambers, "Chamber 1" and "Chamber 2", adjoined each other were used for this study. Subjects were exposed to 30 °C/70%RH air in Chamber 1 for 15 min with 2.0 met of metabolic rate. Then they moved into Chamber 2, where 4 Humidity conditions, 30, 40, 50 and 70%RH were examined. Air temperature was adjusted to keep SET* constant at 25.2 °C for all conditions. Subjects were exposed in Chamber 2 for 180 min performing 2 kinds of simulated office work. Positive effects of low Humidity on subjective pleasantness were found under transient condition at low Humidity due to more evaporation from human body, while no significant difference in thermal sensation and Humidity sensation among 4 relative Humidity levels was obtained. Subjective performance was found to be at the same level under all conditions. However, subjects reported to be more tired at 70%RH after Humidity step change. © 2006 Elsevier Ltd. All rights reserved.
Eiichi Ando - One of the best experts on this subject based on the ideXlab platform.
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durability of doped zinc oxide silver doped zinc oxide low emissivity coatings in Humid Environment
Thin Solid Films, 2008Co-Authors: Eiichi Ando, M MiyazakiAbstract:Abstract The relationship between internal stress of doped zinc oxide films and durability of doped zinc oxide/silver/doped zinc oxide low emissivity (low-e) coatings in Humid Environment was investigated. Aluminum, titanium, tin, chromium, silicon, gallium, magnesium, boron, barium, and calcium were chosen as a doping element in sputtering targets. Ratios of dopant/zinc in the oxide targets were 4/96–5/95 at.%. Films were formed by radio frequency sputtering. Doping of barium and calcium to the zinc oxide film led to a large increase in the internal stress. Doping of the other elements resulted in decreasing the internal stress. It was concluded that durability of the low-e coatings in Humid Environment closely correlated with the internal stress of the oxide layers.
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Durability of doped zinc oxide/silver/doped zinc oxide low emissivity coatings in Humid Environment
Thin Solid Films, 2008Co-Authors: Eiichi Ando, M MiyazakiAbstract:Abstract The relationship between internal stress of doped zinc oxide films and durability of doped zinc oxide/silver/doped zinc oxide low emissivity (low-e) coatings in Humid Environment was investigated. Aluminum, titanium, tin, chromium, silicon, gallium, magnesium, boron, barium, and calcium were chosen as a doping element in sputtering targets. Ratios of dopant/zinc in the oxide targets were 4/96–5/95 at.%. Films were formed by radio frequency sputtering. Doping of barium and calcium to the zinc oxide film led to a large increase in the internal stress. Doping of the other elements resulted in decreasing the internal stress. It was concluded that durability of the low-e coatings in Humid Environment closely correlated with the internal stress of the oxide layers.
Linmao Qian - One of the best experts on this subject based on the ideXlab platform.
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what governs friction of silicon oxide in Humid Environment contact area between solids water meniscus around the contact or water layer structure
Langmuir, 2017Co-Authors: Lei Chen, Chen Xiao, Bingjun Yu, Linmao QianAbstract:In order to understand the interfacial parameters governing the friction force (Ft) between silicon oxide surfaces in Humid Environment, the sliding speed (v) and relative Humidity (RH) dependences of Ft were measured for a silica sphere (1 μm radius) sliding on a silicon oxide (SiOx) surface, using atomic force microscopy (AFM), and analyzed with a mathematical model describing interfacial contacts under a dynamic condition. Generally, Ft decreases logarithmically with increasing v to a cutoff value below which its dependence on interfacial chemistry and sliding condition is relatively weak. Above the cutoff value, the logarithmic v dependence could be divided into two regimes: (i) when RH is lower than 50%, Ft is a function of both v and RH; (ii) in contrast, at RH ≥ 50%, Ft is a function of v only, but not RH. These complicated v and RH dependences were hypothesized to originate from the structure of the water layer adsorbed on the surface and the water meniscus around the annulus of the contact area. ...
Hiroyuki Kawada - One of the best experts on this subject based on the ideXlab platform.
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time dependent deformation of surface geometry on light weight and thermally stable cfrp mirror in Humid Environment
Proceedings of SPIE, 2010Co-Authors: Yoshihiko Arao, Shin Utsunomiya, Jun Koyanagi, Shinichi Takeda, Hiroyuki KawadaAbstract:CFRP (Carbon Fiber Reinforced Plastics) is the ideal material for space based mirror due to its low thermal expansion, and high specific modulus. To expand the use of CFRP, we investigated the long-term stability of CFRP under Humid Environment. CFRP mirror was made as precise as possible by using special class of material and adopting particular design techniques. Dimensional stability of CFRP mirror was evaluated by nano-scale measurement. The factors which cause out-of-plane deformation of the mirror is discussed.
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time dependent out of plane deformation of ud cfrp in Humid Environment
Composites Science and Technology, 2009Co-Authors: Yoshihiko Arao, Shin Utsunomiya, Jun Koyanagi, Hiroyuki KawadaAbstract:Time-dependent out-of-plane deformation of UD-CFRP (unidirectional CFRP laminate) caused by subjection to a Humid Environment was examined and analyzed. The UD-CFRP plate showed unpredictable geometrical variation with time in a Humid Environment, like asymmetric materials. The unpredictability was caused by non-uniform fiber distribution in the thickness direction of the specimen. A three-dimensional diffusion-stress coupling analysis considering the non-uniform fiber distribution was conducted based on finite element analysis. The analytical results showed very good agreement with the experimental results. Furthermore, the relationship between the non-uniform fiber distribution and the out-of-plane deformation with time was obtained quantitatively.
