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Effect of Jujubae Fructus on Fatigue Recovery in Mouse Exercise Model
박진한,Jusik Park 대한운동학회 2023 아시아 운동학 학술지 Vol.25 No.4
OBJECTIVES Jujubae fructus (JF, Ziziphus jujuba var. inermis Rehder) is an economically and agriculturally significant perennial fruit tree crop of the Rhamnaceae family and is used as a traditional herbal medicine. However, the anti-fatigue effect of JF has not been reported yet. The purpose of this study was to examine the anti-fatigue effect of JF by in vivo experiments. Methods Male ICR mice were classified into a saline-treated swimming load test group (control) and JF (1, 10, 100 mg/kg) supplied swimming load test group (JF), and randomly assigned to 5 mice per group. Distilled water and JF were orally administered. The anti-fatigue effect of JF was evaluated by open field test (OFT) and forced swimming test (FST). Results JF significantly increased the total distance moved in OFT in a dose-dependent manner. JF was significantly decreased immobility time compared to control group in the FST. The increase in lactic acid and lactate dehydrogenase after FST was suppressed by JF treatment. Consumption and recovery of energy sources (free fatty acid and triglyceride) were improved after FST through JF treatment. Administration of JF decreased the expression of neurotransmitters such as norepinephrine (NE), serotonin (5-HT), 5-hydroxyindole-acetic acid (5-HIAA), dopamine (DA) by FST in brain stem and hypothalamus. Conclusions Based on these results, this study provides scientific proof for anti-fatigue effect of JF and it could be a useful material.
Generalized Intuitionistic Fuzzy Soft Sets
박진한,권영철,황진수 한국지능시스템학회 2011 한국지능시스템학회 학술발표 논문집 Vol.21 No.1
The notion of generalized intuitionistic fuzzy soft set theory is proposed. Our generalized intuitionistic fuzzy soft set theory is a combination of the generalized intuitionistic fuzzy set theory and the soft set theory. In other words, our generalized intuitionistic fuzzy soft set theory is an extension of the intuitionistic fuzzy soft set theory. The complement, “and” and “or” operations are defined on the generalized intuitionistic fuzzy soft sets.
제품 모듈성 및 신제품개발 성과 관계에서 기술지식 응용성의 조절효과에 관한 연구
박진한 한국전문경영인학회 2020 專門經營人硏究 Vol.23 No.2
This study aims to apply firm’s internal resources as a way to develop new products. In other words, the focus is on enhancing the performance of new product development by applying the accumulated technological knowledge within the firm to develop products that can be utilized in heterogeneous industries at the stage of giving modularity to the product structure. In this study, a research model is established for the moderating effect of technological knowledge applicability in relation to product modularity and new product development performance, and data were collected from 470 domestic manufacturing firms to test by hierarchical regression analysis. The finding shows that product modularity is found to have a positive effect on new product development performance. And application of technological knowledge positively moderates product modularity and performance relationship of new product development. The results of this study implies that accumulated knowledge resources inside the firm (e.g. product technology, R&D knowledge, and knowledge of product functions) can be applied to new product development.