2,498 research outputs found

    Instant computational tool of optothermal fluidics

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    ファイル「README.pdf」を「Manual.pdf」に差し替え(2024-09-18)コンテンツ内容の update のため、ファイル「Manual.pdf」の差し替え(2024-12-16

    Numerical data for "Slip-flow theory for thermo-osmosis based on a kinetic model with near-wall potential"

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    Numerical values of figures 4-10 are provided in ASCII format. Visualization files (*.lay) for software Tecplot are also included

    Instant computational tool of optothermal fluidics

    No full text
    ファイル「README.pdf」を「Manual.pdf」に差し替え(2024-09-18)コンテンツ内容の update のため、ファイル「Manual.pdf」の差し替え(2024-12-16)3.

    Supplemental Material, 20200902_Supplementary_Figure - Clinical Effects of Anterior Cervical Spondylolisthesis on Cervical Spondylotic Myelopathy After Posterior Decompression Surgery: A Retrospective Multicenter Study of 732 Cases

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    Supplemental Material, 20200902_Supplementary_Figure for Clinical Effects of Anterior Cervical Spondylolisthesis on Cervical Spondylotic Myelopathy After Posterior Decompression Surgery: A Retrospective Multicenter Study of 732 Cases by Ken Ninomiya, Junichi Yamane, Ryoma Aoyama, Satoshi Suzuki, Yuta Shiono, Yuichiro Takahashi, Nobuyuki Fujita, Eijirou Okada, Osahiko Tsuji, Mitsuru Yagi, Kota Watanabe, Takahito Iga, Masaya Nakamura, Morio Matsumoto, Ken Ishii and Narihito Nagoshi in Global Spine Journal</p

    JCB899577 Supplemental Material - Supplemental material for Metabolic endotoxemia promotes neuroinflammation after focal cerebral ischemia

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    Supplemental material, JCB899577 Supplemental Material for Metabolic endotoxemia promotes neuroinflammation after focal cerebral ischemia by Naohide Kurita, Kazuo Yamashiro, Takuma Kuroki, Ryota Tanaka, Takao Urabe, Yuji Ueno, Nobukazu Miyamoto, Masashi Takanashi, Hideki Shimura, Toshiki Inaba, Yuichiro Yamashiro, Koji Nomoto, Satoshi Matsumoto, Takuya Takahashi, Hirokazu Tsuji, Takashi Asahara and Nobutaka Hattori in Journal of Cerebral Blood Flow & Metabolism</p

    A generalized slip-flow theory for a slightly rarefied gas flow induced by discontinuous wall temperature

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    A system of fluid-dynamic-type equations and their boundary conditions derived from a system of the Boltzmann equation is of great importance in kinetic theory when we are concerned with the motion of a slightly rarefied gas. It offers an efficient alternative to solving the Boltzmann equation directly and, more importantly, provides a clear picture of the flow structure in the near-continuum regime. However, the applicability of the existing slip-flow theory is limited to the case where both the boundary shape and the kinetic boundary condition are smooth functions of the boundary coordinates, which precludes, for example, the case where the kinetic boundary condition has a jump discontinuity. In this paper, we discuss the motion of a slightly rarefied gas caused by a discontinuous wall temperature in a simple two-surface problem and illustrate how the existing theory can be extended. The discussion is based on our recent paper [Taguchi and Tsuji, J. Fluid Mech. 897, A16 (2020)] supported by some preliminary numerical results for the newly introduced kinetic boundary layer (the Knudsen zone), from which a source-sink condition for the flow velocity is derived.Comment: 17 pages, 3 figure

    Inverse Magnus effect in a rarefied gas

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    The transverse force exerted on a rotating sphere immersed in an otherwise uniform flow of a rarefied gas is investigated based on the Bhatnagar-Gross-Krook (BGK) model of the Boltzmann equation assuming the Maxwell boundary condition on the sphere. In several existing studies, it has been shown that the transverse force acting on the sphere, also known as the Magnus force, has opposite signs in the free molecular and continuum flows. The present study intends to clarify the force's transition in terms of the Knudsen number (i.e., the reciprocal ratio of the sphere radius to the molecular mean free path) with a particular interest in the impact of the sphere's surface accommodation. It is found that the threshold of the Knudsen number, at which the transverse force changes the sign, depends only weakly on the accommodation coefficient, suggesting certain robustness in the threshold. The present study is an extension of the previous work [S. Taguchi and T. Tsuji, J. Fluid. Mech. 933, A37 (2022)], in which the case of complete accommodation (diffuse reflection) is exclusively considered.Comment: 22 pages, 2 figure

    A successful model of regional healthcare information exchange in Japan: Case Study in Kagawa Prefecture

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    In this study, we focused on analysis of healthcare data exchange over the network. For the advance of broadband capability development, many governments expect online medical information exchange between medical institutions. Japanese government also has tried to deploy ICT in the healthcare field. In Japan, many healthcare ICT projects started, but almost of all the projects face many issues and failed to continue. This situation caused us to clarify the success factor of healthcare information exchange network. For inspecting the success factors, we analyzed information access of healthcare systems in Kagawa prefecture of Japan. Kagawa prefecture is one of the most advance areas for healthcare information technology. We analyzed four medical ICT projects in Kagawa prefecture: K-MIX, Critical Pathway for Diabetes, E-prescription, and PHR. In addition, we inspected characteristics of exchanged data in the network, and stakeholder involved in these projects. This analysis lets us find various types of healthcare ICT projects. Characteristic of data processed in the projects caused differences of characteristic of the projects. On the other hand, multiple systems process same data, though the project does not share the data itself. Considering various types of medical information exchanges projects, we propose classification and standard format of exchanged data according to their characteristic are critical for efficient business deployment. --e-Health,regional healthcare information exchange,EHR

    Semianalytical model of optothermal fluidics in a confinement

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    In this paper, we provide the semianalytical solution of the temperature and flow fields of a fluid confined in a narrow space between two parallel plates. The temperature increase is triggered by photothermal effects of fluids and/or boundaries due to the absorption of a focused Gaussian beam irradiated perpendicular to the fluid film, and then the temperature variation induces the flow fields through a buoyancy force and/or thermo-osmotic slip. The semianalytical solution to this optothermal fluidic system is validated by comparing with the results of numerical simulation, and is applied to typical optothermal fluidic problems. In particular, the optothermal trap of nanoparticles observed in our previous experiment [Tsuji et al., Electrophoresis 42, 2401 (2021)] is investigated in terms of thermophoretic force and flow drag that are obtained semianalytically. The semianalytical solution can be shared through open-source codes that are available to researchers without the background of fluid mechanics

    Analysis for science librarians of the 2015 Nobel Prize in Physiology or Medicine: the life and work of William C. Campbell, Satoshi Ōmura, and Youyou Tu

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    Parasites affect humans worldwide with varying degrees of seriousness. Some of the most impactful parasitic infections affect millions of people, many of whom are already impoverished and struggling. The discoveries of the 2015 Nobel Laureates in Physiology of Medicine have changed the way some of these serious parasitic infections are treated, saving and improving the lives of countless people. These Laureates are William C. Campbell, Satoshi Ōmura, and Youyou Tu
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