Transactions of the Visualization Society of Japan最新文献

Analysis of erythrocyte swelling caused by osmotic shock under a non-hemolytic condition 非溶血状态下渗透性休克所致红细胞肿胀分析

Transactions of the Visualization Society of Japan Pub Date : 1900-01-01 DOI: 10.3154/tvsj.40.23

K. Bando, R. Otomo, Yukari Shimizu, H. Tabuchi

{"title":"Analysis of erythrocyte swelling caused by osmotic shock under a non-hemolytic condition","authors":"K. Bando, R. Otomo, Yukari Shimizu, H. Tabuchi","doi":"10.3154/tvsj.40.23","DOIUrl":"https://doi.org/10.3154/tvsj.40.23","url":null,"abstract":"ABSTRACT Osmotic shock is clinically widely used to measure erythrocyte health. In order to analyze the fragility of erythrocytes, effects of factors such as osmotic pressure, hydrostatic pressure, and membrane tension on the swelling and shrinking processes must be examined. Hypotonic shock-induced swelling experiments were performed on erythrocytes under a non-hemolytic condition. Erythrocyte swelling was modeled using a onedimensional model in which the osmotic difference across the membrane was obtained by solving diffusion equations for the inner and outer regions of the erythrocyte membrane. The simulated timewise changes in erythrocyte volume and osmotic difference fitted well with those of the experiments when the permeability coefficient of the membrane was adjusted. In the simulation, the time to swell to a sphere was almost the same as that in the experiment, and the non-hemolytic condition was satisfied, as the membrane tension was smaller than a hemolysis inception tension. By changing the area expansion modulus of the membrane, the differences in erythrocyte diameter, after being spherical in the equilibrium state, were calculated and then compared. The diameter differences were too small to be resolved with an optical microscope. However, the estimated time differences to reach hemolysis were measurable, suggesting that mechanical characterization of the area expansion modulus of the membrane is possible.","PeriodicalId":246197,"journal":{"name":"Transactions of the Visualization Society of Japan","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121945216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Experimental Characteristics on the Number of Spin Reversals of Semi-ellipsoidal Shaped Celts with Various Principal Curvatures 具有不同主曲率的半椭球体自旋反转数的实验特征

Transactions of the Visualization Society of Japan Pub Date : 1900-01-01 DOI: 10.3154/tvsj.40.1

K. Kioi

引用次数: 0

Influence of large-scale structure on the turbulent Prandtl number in a turbulent mixing layer 湍流混合层中大尺度结构对湍流普朗特数的影响

Transactions of the Visualization Society of Japan Pub Date : 1900-01-01 DOI: 10.3154/TVSJ.39.1

K. Takamure, Y. Sakai, Yasumasa Ito, K. Iwano

{"title":"Influence of large-scale structure on the turbulent Prandtl number in a turbulent mixing layer","authors":"K. Takamure, Y. Sakai, Yasumasa Ito, K. Iwano","doi":"10.3154/TVSJ.39.1","DOIUrl":"https://doi.org/10.3154/TVSJ.39.1","url":null,"abstract":"Influence of large-scale structure on the turbulent Prandtl number in a turbulent mixing layer Kotaro TAKAMURE, Yasuhiko SAKAI, Yasumasa ITO, Koji IWANO ABSTRACT We have run a Direct Numerical Simulation of a spatially developing shear mixing layer. The aim of this study is to clarify the influence of the large-scale structure on the turbulent Prandtl number PrT. As a main conclusion, PrT takes a small value (PrT ~ 0.5) in the dominant region of the large-scale structure. The budget analyses for the Reynolds stress equation and the scalar flux equation revealed that the differences between the momentum and scalar transfer are caused by terms related to pressure (i.e., pressure-strain correlation term, pressure-scalar gradient correlation term, and pressure diffusion terms). Phenomenally, the momentum in the field where a large-scale vortex coexists tends to be transported toward the countergradient direction under the influence of pressure, but the scalar is transported toward the gradient direction. As a result, it is thought that the difference in the driving force between the momentum and scalar transport causes the decrease of the PrT.","PeriodicalId":246197,"journal":{"name":"Transactions of the Visualization Society of Japan","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128685392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Measurement of skin friction distribution using oil film for industrial wind tunnels 用油膜法测量工业风洞表面摩擦分布

Transactions of the Visualization Society of Japan Pub Date : 1900-01-01 DOI: 10.3154/tvsj.41.28

H. Iijima, T. Uchiyama, H. Kato

引用次数: 1

High spatial resolution/high SN ratio measurement of concentration by optical fiber LIF method 高空间分辨率/高SN比光纤LIF法测量浓度

Transactions of the Visualization Society of Japan Pub Date : 1900-01-01 DOI: 10.3154/TVSJ.39.28

K. Iwano, Koji Suzuki, Y. Sakai, Yasumasa Ito

引用次数: 0

Experimental visualization of expiratory diffusion under face-to-face situation with utterance 说话时面对面呼气扩散的实验可视化

Transactions of the Visualization Society of Japan Pub Date : 1900-01-01 DOI: 10.3154/tvsj.41.21

K. Ishii, Yoshiko Ohno, Maiko Oikawa, N. Onishi

{"title":"Experimental visualization of expiratory diffusion under face-to-face situation with utterance","authors":"K. Ishii, Yoshiko Ohno, Maiko Oikawa, N. Onishi","doi":"10.3154/tvsj.41.21","DOIUrl":"https://doi.org/10.3154/tvsj.41.21","url":null,"abstract":"接触・発話を伴う対面時の呼気の可視化石井慶子 1), 2),大野淑子 2), 3),及川麻衣子 2), 3),大西典子 2), 3) Experimental visualization of expiratory diffusion under face-to-face situation with utterance Keiko Ishii, Yoshiko Ohno, Maiko Oikawa, Noriko Onishi ABSTRACT Due to the influence of the COVID-19, great damage has occurred all over the world. Not only health and medical problems, but also the effects of the decline in quality of life and economic activity due to the suspension of social activities cannot be ignored. It is thought that the main cause of virus infection is coughing and sneezing, but in recent it has become a topic that there is a possibility of airborne infection by aerosols containing viruses scattered in the air. In the case of airborne infection, the risk of infection is considered to increase when the mucous membrane is exposed to exhaled aerosol for a long time. Therefore, in this study, we actually visualized human breath by using the smoke of electronic cigarettes as tracer particles. For 4 patterns of the human posture, exhaled breath was visualized. As a result, it was clarified that the exhaled breath is affected by the body wall temperature and rises when it stays in the boundary layer, falls when it leaves, or diffuses randomly. This finding is effective in reducing the risk of infection during face-to-face customer service, and is considered to be the first discussion of the characteristics of human exhalation affected by temperature.","PeriodicalId":246197,"journal":{"name":"Transactions of the Visualization Society of Japan","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132058358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

折紙式メガホンの試作と飛沫抑制効果の評価折纸式喇叭筒的试制和飞沫抑制效果的评价

Transactions of the Visualization Society of Japan Pub Date : 1900-01-01 DOI: 10.3154/tvsj.43.9

Yo Ishigaki, H. Mikami

引用次数: 0

振動モード計測のための時間平均パルスストロボデジタルホログラフィ干渉法振动模式测量的时间平均脉冲频闪数字全息干扰法

Transactions of the Visualization Society of Japan Pub Date : 1900-01-01 DOI: 10.3154/tvsj.43.1

Hiroki Matsumoto, Hideki Funamizu

引用次数: 0

Flying Light Captured with a Multi-framing Image Sensor Operating at 10 ns 用工作在10ns的多帧图像传感器捕获的飞行光

Transactions of the Visualization Society of Japan Pub Date : 1900-01-01 DOI: 10.3154/tvsj.39.35

Y. Takano, T. Okinaka, K. Takehara, H. Nakano, K. Shimonomura, Naoki Hayashi, Yoichi Mitsui, T. Etoh

引用次数: 0

Experimental Analysis for Internal Flow Field of Torque Converter 液力变矩器内部流场实验分析

Transactions of the Visualization Society of Japan Pub Date : 1900-01-01 DOI: 10.3154/TVSJ.39.11

Yasunori Kunisaki, S. Murata, Yohsuke Tanaka, Tomoya Takeda

引用次数: 1