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Search for charged-lepton flavor violation in Υ(2S) → ℓ∓τ± (ℓ = e, μ) decays at Belle
No full textjournal articl
Development of Low-Molecular-Weight Gelator/Polymer Composite Materials Utilizing the Gelation and Swelling Process of Polymeric Materials
No full textThe creation of polymer composite materials by compositing fillers into polymer materials is an effective method of improving the properties of polymer materials, and the development of new fillers and their novel composite methods is expected to lead to the creation of new polymer composite materials. In this study, we develop a new filler material made of low-molecular-weight gelators by applying a gelation process that simultaneously performs the swelling (gelation) of crosslinked polymer materials and the self-assembly of low-molecular-weight gelators into low-dimensional crystals in organic solvents within polymer materials. The gelation process of crosslinking rubber-based polymers using alkylhydrazides/toluene as the low-molecular-weight gelator allowed us to composite self-assembled sheet-like crystals of alkylhydrazides as fillers in polymeric materials, as suggested by various microscopic observations, including infrared absorption measurements, small-angle X-ray diffraction measurements and thermal analysis, microscopy, and infrared absorption measurements. Furthermore, tensile tests of the composite materials demonstrated that the presence of fillers improved both the Young’s modulus and the tensile strength, as well as the elongation at yield. Additionally, heat treatment was shown to facilitate filler dispersion and enhance the mechanical properties. The findings demonstrate the potential of self-assembled sheet-like crystals of low-molecular-weight gelators as novel filler materials for polymers. The study’s composite method utilizing gelators via gelation proved effective.journal articl
ジェンダーシステム正当化の要因の検討 システム脅威、性役割の暗黙理論、性別による差別・優遇認知に注目して
No full textGuided by system justification theory, this study investigated factors of gender system justification. Two hundred and seventy-nine female students were asked to indicate the gender system justification, traditional gender-role orientation, and the following factors: (a) perceptions of the system threat toward the current gender system, (b) implicit theory of gender role, and (c) the perceptions of gender-based discrimination/preferential treatments. Regression analyses were conducted to examine these factors’ main effects and interactions. The result of multiple regression analysis revealed that these variables were independently associated with gender system justification. Notably, the interactions of system threat and other variables were found; the system threat moderated the effects of implicit theory of gender role and discrimination perceptions on gender system justification. The theoretical and applied implications of this study were discussed.journal articl
Structure of Disaster Preparedness Motivation and Its Relationship with Disaster Preparedness Behaviors
No full textThis study investigated the motivations related to autonomous and continuous disaster preparedness from the viewpoint of self-determination theory (SDT). Study 1 was a bottom-up investigation to capture the structure of motivation. Four hundred people who had already engaged in preparedness answered an open-ended question concerning the reason for their preparedness. After categorizing the descriptions, four distinct categories (personal significance, avoidance of negative affect, introjection of social norms, and other-oriented motivation) were extracted. Study 2 developed survey items, based on the four categories extracted in Study 1 and a conceptual definition of the theory, and examined their relationships with disaster preparedness. Five hundred and sixty people answered the questions on disaster preparedness motivation (32 items), autonomous disaster preparedness (four items), household preparedness (10 items), and continuous preparedness (10 items). Factor analysis of motivation extracted four factors (personal significance and avoidance of negative affect, introjection of social norms, intimate other-orientation, and general other-orientation). Correlation analysis showed that all motivations were positively correlated with autonomous, household, and continuous preparedness. The results contribute to extending the scope of application of SDT and to clarifying the motivations corresponding to disaster preparedness. For future studies, strategies to promote disaster preparedness are discussed.journal articl
