21 research outputs found

    Numerical Analysis for Two-dimensional Heat Transfer of Superfluid Helium with Phase Transition

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    The purpose of this paper is to confirm the validity of the numerical model proposed in our previous paper for a two-dimensional analysis. The model can be applied to a wide range of temperatures from superfluid helium to normal fluid helium at vapor state. Two-dimensional numerical analysis for the horizontal channel with the heated bottom was performed, and the results were compared with experimental results. For low heat flux, the temperature profiles at steady state obtained from the analysis showed quantitative agreements with those from the experiment. For higher heat flux, the numerical results were able to represent the experimental temperature profiles qualitatively. In the transient analysis, the model was able to simulate the change of the velocity field caused by the phase transition. It was concluded that the validity of the proposed model in the temperature range including the phase transition was partially verified.The purpose of this paper is to confirm the validity of the numerical model proposed in our previous paper for a two-dimensional analysis. The model can be applied to a wide range of temperatures from superfluid helium to normal fluid helium at vapor state. Two-dimensional numerical analysis for the horizontal channel with the heated bottom was performed, and the results were compared with experimental results. For low heat flux, the temperature profiles at steady state obtained from the analysis showed quantitative agreements with those from the experiment. For higher heat flux, the numerical results were able to represent the experimental temperature profiles qualitatively. In the transient analysis, the model was able to simulate the change of the velocity field caused by the phase transition. It was concluded that the validity of the proposed model in the temperature range including the phase transition was partially verified

    New findings on the fungal species Tricholoma matsutake from Ukraine, and revision of its taxonomy and biogeography based on multilocus phylogenetic analyses

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    Publisher Copyright: © 2022 Elsevier B.V.. All rights reserved.Matsutake mushrooms are among the best-known edible wild mushroom taxa worldwide. The representative Tricholoma matsutake is from East Asia and the northern and central regions of Europe. Here, we report the existence of T. matsutake under fir trees in Eastern Europe (i.e., Ukraine), as confirmed by phylogenetic analysis of nine loci on the nuclear and mitochondrial genomes. All specimens from Japan, Bhutan, China, North Korea, South Korea, Sweden, Finland, and Ukraine formed a T. matsutake clade according to the phylogeny of the internal transcribed spacer region. The European population of T. matsutake was clustered based on the β2 tubulin gene, with a moderate bootstrap value. In contrast, based on analyses of three loci, i.e., rpb2, tef1, and the β2 tubulin gene, T. matsutake specimens sampled from Bhutan and China belonged to a clade independent of the other specimens of this species, implying a genetically isolated population. As biologically available type specimens of T. matsutake have not been designated since its description as a new species from Japan in 1925, we established an epitype of this fungus, sampled in a Pinus densiflora forest in Nagano, Japan.Peer reviewe

    The Definition of mānasapratyakṣa : Prajñākaragupta and the Tarkarahasya

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    広島大学比較論理学プロジェクト研究センター研究成果報告書(2007年度)本稿は、平成19年度科学研究費補助金(特別研究員奨励費)による研究成果の一部である

    Non-distinction between pramāṇa and pramāṇaphala : Prajñākaragupta’s Interpretation of PV III 319

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    広島大学比較論理学プロジェクト研究センター研究成果報告書(2006年度

    Prajñākaragupta on What Brings about Diversity in Cognition

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    広島大学比較論理学プロジェクト研究センター研究成果報告書(2005年度

    認識の多様性とその根拠 : プラジュニャーカラ的アプローチ

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