30 research outputs found

    Preface

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    Article信州大学農学部紀要. 46(1-2): 121 (2010)departmental bulletin pape

    Use and Conservation of Edible Wild Plants in Bhutan

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    In an investigation of edible wild plants in Bhutan by the authors, plants samples were identified and categorized into 60 families and 172 species and 6 families and 18 species from Divisions Magnoliophyta and Pteridophyta,respectively.Management of the community forest is one effective way for achieving in-situ conservation of edible wild plants. Since gathering edible wild plants in a forest is performed simultaneously with the maintenance and management of the forest in Bhutan, gathering is thought to be helpful to forest conservation.ブータンでの食用野生植物の調査の結果,種子植物で60科172種が,シダ植物で6科18種が確認された。共有林を維持管理していくことは,このような野生植物の生息域内保全に効果的である。ブータンでは食用野生植物の採取は森林の維持管理と一体的に行われているため,森林保全の一助にもなっていると考えられる。Article信州大学農学部紀要 48(1-2): 75-83(2012)departmental bulletin pape

    Comparison of seasonal growth and yield performances of Japanese cabbage varieties in Nagano, Japan

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    Three cabbage varieties, "Ajioh","Shutoku SP" and "Shinshu 868" were investigated at the AFC field, Faculty of Agriculture, Shinshu University during 2014. The experiment was established in a simple Randomized Complete Block Design, where these three cabbage varieties were transplanted and harvested at five different seasons. There were some significant differences among the varieties in head weight, head width and head height, as well as the number of leaves and their weight. For seasonal difference, the highest growth and yield performances were observed in Phase 3 (harvested in October) among the varieties. The results obtained indicated that "Shinshu 868" produced the highest head weight (1.64㎏) and the highest head width (19.1㎝) ; while "Ajioh" produced the highest head height (14.4㎝/head). The phase 5 had no head formation due to change in weather condition from October to December.Article信州大学農学部AFC報告 13: 131-136 (2015)departmental bulletin pape

    Group-theoretical analysis of two-dimensional hexagonal materials

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    金沢大学理工研究域数物科学系Two-dimensional hexagonal materials such as graphene and silicene have highly symmetric crystal structures and Dirac cones at the K point, which induce novel electronic properties. In this report, we calculate their electronic structures by using density functional theory and analyze their band structures on the basis of the group theory. Dirac cones frequently appear when the symmetry at the K point is high; thus, two-dimensional irreducible representations are included. We discuss the relationship between symmetry and the appearance of the Dirac cone. © 2017 The Japan Society of Applied Physics.Embargo Period 12 month

    First-principles calculation of anomalous muonium in silicon: Origin of the negative Fermi contact interaction constant

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    金沢大学理工研究域数物科学系We present the calculation of anomalous muonium in silicon which has been extensively studied but there still remains unresolved problems in the first-principles calculations. We perform calculations using spin-polarized density functional theory within the general gradient approximation or the local density approximation. We check the size effect of supercells and find that we need to use large sizes of supercells to obtain reliable results. Some quantitative disagreement between the experimental and theoretical values in previous studies may be due to the use of insufficient sizes of supercells. We clarify that the negative Fermi contact interaction constant (FCIC) is induced by the electron correlation effect. By using the Hubbard model, we find that the FCIC is zero when we neglect the correlation effect and the negative value of the FCIC is induced by the correlation effect. © 2019 The Japan Society of Applied Physics.Embargo Period 12 month

    First-principles study on thermoelectric properties of half-Heusler compounds CoMSb (M = Sc, Ti, V, Cr, and Mn)

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    金沢大学自然科学研究科数物科学専攻We have performed systematic density functional calculations and evaluated thermoelectric properties (Seebeck coefficient and anomalous Nernst coefficient) of half-Heusler compounds CoMSb (M = Sc, Ti, V, Cr, and Mn). The carrier concentration dependence of the Seebeck coefficient in nonmagnetic compounds is in good agreement with experiments. We found that the half-metallic ferromagnetic CoMnSb shows a large anomalous Nernst effect originating from Berry curvature near the Brillouin zone boundary. These results help us understand the mechanism of a large anomalous Nernst coefficient and give us a clue to design high performance magnetic thermoelectric materials. © 2018 Author(s).Embargo Period 12 month

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    Proceedings of Shinshu University International Symposium 2008 “Sustainable Coexistence with Forest - Dietary Usage of Wild Plants and Agriculture in Bhutan -”Article信州大学農学部紀要. 45(1-2): 32 (2009)departmental bulletin pape

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