We have synthesized Ba2NaNb5O15 (BNN) crystal by annealing 25.6BaO–6.4Na2O–32Nb2O5–24SiO2–12B2O3 (BNNSB) glass and investigated the crystallization kinetics from the glass. The glass sample was prepared by a plate quenching method. Thermal, structural, vibrational, and surface properties have been studied by using differential thermal analysis, X-ray diffraction, Raman spectroscopy, and atomic force microscopy, respectively. It is found that the crystallite sizes of the orthorhombic Ba2NaNb5O15 crystal occurring in the BNNSB glass are confined within 30–70 nm. The Williamson–Hall plot was applied to estimate the effect of crystallite size and strain to Bragg peak broadening. The isothermal model of the Johnson–Mehl–Avrami–Kolmogorov function was applied to characterize the kinetics of the crystallization process. The Avrami exponent 4.5 indicates that the crystallization mechanism belongs to an increasing nucleation rate with diffusion-controlled growth. The activation energy of crystallization, 5.0 eV, obtained from the isothermal model, shows a value similar to that resulting from the isoconversion method. The Raman scattering patterns, which are very different between the crystalline and glass phases, have been deconvoluted, and the various vibrational modes have been explained based on the network dimensionality, nonbridging oxygen, and the degree of structural order.

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In modern society, the importance of scalp hair care is increasing. Therefore, we would like to suggest a direction for improving the expertise of trichologists as a way to meet the demand for customized scalp and hair care services. In this study, a total of 298 questionnaires were used as frequency analysis, factor analysis, reliability analysis, regression analysis, and correlation analysis data through SPSS 26.0. analyzed. The survey results regarding the use of scalp and hair care services are as follows. First, trichologist expertise was classified as a single factor, and service use intention was classified as perceived usefulness and subjective normative factors. Second, the higher the expertise of the trichologist, the greater the effect of the intention to use the scalp and hair care service on the perceived usefulness factor and the subjective normative factor. In conclusion, we hope that more research will be done to strengthen the expertise of the trichologist, a senior workforce in the rapidly evolving beauty and health care industry.

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This paper describes the pattern synthesis method of two kinds of conformal array antenna using the Enhanced Adaptive Genetic Algorithm (EAGA). One is the 1×16 conformal array antenna on a curved cylindrical metallic surface with quadratic function, and the other is the 18-element conformal arrary antenna on a metallic surface obtained by the rotation of a quadratic function curve around the axis. The active element pattern is utilized in the pattern synthesis. Especially for the case of the rotated-type conformal array antenna the transformed active element pattern obtained from the Euler's angle rotation of the active element pattern of the planar concentric array is utilized, which reduces the synthesis time a lot. To verify the validity of the proposed synthesis method the MATLAB results are compared with the MWS results. Furthermore, for the case of 1×16 conformal array antenna the measured results are compared with the MATLAB synthesized results.