5578 research outputs found
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Chemiluminescent Reaction Induced by Mixing of Fluorescent-Dye-Containing Molecular Organogels with Aqueous Oxidant Solutions
No full textChemiluminescence in solution-based systems has been extensively studied for the chemical analysis of biomolecules. However, investigations into the control of chemiluminescence reactions in gel-based systems, which offer flexibility in reaction conditions (such as the softness of the reaction environment), have only recently begun in polymer materials, with limited exploration in low-molecular-weight gelator (LMWG) systems. In this study, we investigated the chemiluminescence behaviors in the gel states using LMWG systems and evaluated their applicability to fluorescent-dye-containing molecular organogel systems/oxidant-containing aqueous systems. Using diethyl succinate organogels composed of 12-hydroxystearic acid as a molecular organogelator, we examined the fluorescent properties of various fluorescent dyes mixed with oxidant aqueous solutions. As the reaction medium transitioned from the solution to the gel state, the emission color and chemiluminescence duration changed significantly, and distinct characteristics were observed, for each dye. This result indicates that the chemiluminescence behavior differs significantly between the solution and gel states. Additionally, visual inspection and dynamic viscoelastic measurements of the mixed fluorescent dye-containing molecular gels and oxidant-containing aqueous solutions confirmed that the chemiluminescence induced by the mixing occurred within the gel phase. Furthermore, the transition from the solution to the gel state may allow for the modulation of the mixing degree, thereby enabling control over the progression of the chemiluminescence reaction.journal articl
Active Galactic Nucleus Properties of ∼1 Million Member Galaxies of Galaxy Groups and Clusters at z < 1.4 Based on the Subaru Hyper Suprime-Cam Survey
No full textHerein, we present the statistical properties of active galactic nuclei (AGNs) for approximately 1 million member galaxies of galaxy groups and clusters with 0.1 < cluster redshift (zcl) < 1.4 selected using the Subaru Hyper Suprime-Cam, the so-called CAMIRA clusters. In this research, we focused on the AGN power fraction (fAGN), which is defined as the proportion of the contribution of AGNs to the total infrared (IR) luminosity, LIR (AGN)/LIR, and examined how fAGN depends on (i) zcl and (ii) the distance from the cluster center. We compiled multiwavelength data using the ultraviolet–mid-IR range. Moreover, we performed spectral energy distribution fits to determine fAGN using the CIGALE code with the SKIRTOR AGN model. We found that (i) the value of fAGN in the CAMIRA clusters is positively correlated with zcl, with the correlation slope being steeper than that for field galaxies, and (ii) fAGN exhibits a high value at the cluster outskirts. These results indicate that the emergence of the AGN population depends on the redshift and environment and that galaxy groups and clusters at high redshifts are important in AGN evolution. Additionally, we demonstrated that cluster–cluster mergers may enhance AGN activity at the outskirts of particularly massive galaxy clusters. Our findings are consistent with a related study on the CAMIRA clusters that was based on the AGN number fraction.journal articl
Digital Innovation in Faculty Development: Crafting Academic Portfolios for the Next Era
No full textThis paper presents one project on integrating digital innovation in faculty development by creating academic portfolios. Academic portfolios document the multifaceted achievements of faculty members and help them in their professional progress and self-evaluation. This initiative adopted a systematic approach following the TU guidelines, incorporating lectures, mentoring, and collaborative sessions, and guiding educators to create portfolios that integrate teaching, research, and service activities. The project’s use of digital tools enabled time efficiency, accessibility, and iterative improvement and improved the transparency and scope of faculty performance. The digital platform also facilitated real-time feedback and integration of the portfolio with a wider digital repository, which aligns with environmentally sustainable practices. Participant feedback highlighted increased motivation and a deeper understanding of the interaction between teaching and research. The project demonstrated that the digital portfolio powerfully aligned teachers’ activities with their professional ethos and promoted continuous development and personal growth goals. This approach suggests the potential for transforming faculty development in the academic community.journal articl
自己制御ニーズに基づくソーシャルサポートの有効性についての検討
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This study investigated whether enacted social support was effective in a Japanese population based on the regulatory effectiveness of support (RES). RES is the extent to which social support can satisfy two needs (truth and control) concerning the recipient’s self-regulation. In this study, participants were asked to recall support they received from a long-term partner (Study 1) or a non-family member or non-partner (Study 2) for a difficulty they faced. Furthermore, they indicated RES, perceived responsiveness (PR) of the supporter, motivation, and mood for self-regulation. Data from 239 adults in Study 1 and 221 undergraduates in Study 2 were analyzed. Confirmatory factor analyses indicated that RES consisted of the abovementioned factors (truth and control) and was a different construct from PR. Furthermore, regression analyses found that RES was associated with motivation for self-regulation and high arousal-positive mood compared to PR. These results suggest the importance of RES in Japan. Finally, the implications and limitations of this study are discussed.journal articl
Fabrication of Low Resistive and Adhesive Cu Layer on Glass Substrate by Chemical Bath Deposition and Chemical Reduction
No full textjournal articl
Luminescence Changeable CO_2‐Storage Cylinder: Triple‐Stranded Helical Eu(III)/Tb(III) Fluorinated MOFs with Amide Linkers
No full textTriple-stranded helical lanthanide MOFs with CO_2 adsorption properties were investigated. Lanthanide MOFs ([Eu_0.1Tb_0.9(hfa)_3(dpa)]_n) are composed of lanthanide luminophores (Eu(III) and/or Tb(III) ions), fluorinated antenna ligands (hfa: hexafluoroacetylacetonate), and polyamide-type linker ligands (dpa: 4-(diphenylphosphoryl)-N-(4-(diphenylphosphoryl)phenyl)benzamide). The cylindrical structure was characterized by single-crystal X-ray analysis, thermogravimetric analysis, and gas adsorption measurements. The inner surfaces of the cylindrical channels were covered with the fluorine atoms of the hfa ligands. The emission intensity ratio (I_Eu/I_Tb) in [Eu_0.1Tb_0.9(hfa)_3(dpa)]_n is affected by the CO_2 gas adsorption behavior. The change in I_Eu/I_Tb value was caused by the intermolecular interactions between the CO_2 gas molecules and the fluorinated ligands, resulting in an electronic structural change of the lowest triplet excited state in the photosensitized hfa ligands.This work was supported by JSPS KAKENHI, Grant Numbers
JP23K17925 and JP23K23420.journal articl
令和5年度 奈良女子大学附属幼稚園 実践と研究の履歴：ともにあるということ:ちいさなものがたりをつむぐ実践 2023
No full texthttp://purl.org/coar/resource_type/c_184
