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육경창,신대윤,신홍철,김완영 ( Gyeong Chang Yug,Dae Yewn Shin,Hong Chul Shin,Wan Young Kim ) 한국공업화학회 1992 공업화학 Vol.3 No.2
테레프탈산, 비페닐 디카르복시산과 히드로퀴논을 용액중합하여 전방향족 액정 폴리에스테르를 합성하고 테레프탈산과 비페닐 디카복시산의 몰비가 액정중합체의 열적성질, 열안정성 및 메소상의 구조에 미치는 영향을 DSC, TGA, 편광현미경 및 X선회절기로 조사하였다. 본 연구에서 합성한 중합체는 모두 열방성 액정중합체였고 네마틱 액정상을 나타내었으며, 용융온도 및 등방화온도는 중합체중의 비페닐렌구조가 증가함에 따라 약간씩 증가하였다. 또한 중합체의 열안정성은 중합체중의 비페닐렌구조가 증가함에 따라 개선되었으며, 비페닐렌구조를 가지는 중합체의 결정도는 상당히 높아서 약 33%정도로 나타났다. Aromatic liquid crystalline polyesters were synthesized from terephthalic acid(TPA), biphenyl dicarboxylic acid(BPA) and hydroquinone(HQ) by solution polymerization. Effects of TPA/BPA ratio(by mole %) on the theremal properties, thermal stability and textures of mesophases were investigated with DSC, TGA, cross-polarized microscopy and X-ray diffractometer. The synthesized polymers in this study were thermotropic and showed nematic textures. Melting temperature(T_m) and isotropization temperature (T_i) of polymer increased and thermal stabilities of polymer were improved with the content of BPA. Most of the polymers in this study had cystallinity more than 30%.
육경창,신홍철,김완영 전북대학교 공업기술연구소 1987 工學硏究 Vol.18 No.-
New chelating resins containing phosphonyl group directly on polymer backbone and chelating resins containing some functional group like phosphonyl, amidoxime, or sulfonyl group were synthesized. Their adsorption capacity for uranyl ion was investigated with ICP-AES Generally, the adsorption capacity of amidoxime type chelating resin was better than that of phosphonyl type chelating resin. The effects of diluents (toluene and n-heptane) and crosslinking agent (DVB) on the adsorption capacity were examined. When using 10wt % of toluene as a diluent, the ad-sorption capacity reached the maximum value and the optimum concentration of DVB as a crosslinking agent for uranyl lon uptake was 7wt%
경창호,이경회,차일환 한국음향학회 1985 韓國音響學會誌 Vol.4 No.1
Environmental noise raises serious problems in our ciries. Noise reduces the preformance task, and occasionially causes the physiological problems such as nervous strain, headache etc. This study is to investigate the environmental noise of elementary school classrooms in attempt to probide the basis of appropriate sound performance standards. Field interview survey with a total of 369 subjects in 3 elementary schools and simultaneously measurements of noise level have been made. The results of study show that the A-weighted noise level is in excess of the criteria recommended by I.S.O. and 69% of the subjects are annoyed by the environmental noises : in particular traffic ; and market noises.
마음챙김자기효능감, 자기자비, 역기능적 태도, 의도적 반추의 관계에 관한 고찰
임세라,경창학 동방문화대학원대학교 자연치유연구소 2019 자연치유연구 Vol.4 No.1
The purpose of the study aimed to provide the theoretical review for the Mindfulness-Based Self-Efficacy, Self-Compassion, Dysfunctional Attitudes and intentional Rumination for torment relief. To date, previous studies related to Mindfulness and Self-Compassion reported in foreign literature have focused on the recovery of psychological awareness. However, there were limitations of comprehensive studies on Mindfulness-Based Self-Efficacy, SelfCompassion, Dysfunctional Attitudes and Rumination. Therefore, we analyzed the definition and psychological concept of Mindfulness-Based Self-Efficacy, Self-Compassion, Dysfunctional Attitudes and Rumination. In addition, the study investigated the relation between the factors of Mindfulness-Based Self-Efficacy, Self-Compassion, Dysfunctional Attitudes and Rumination. It provided the general review and understanding of the Mindfulness-Based Self-Efficacy, SelfCompassion, Dysfunctional Attitudes and Rumination. from the reported studies. In conclusion, the study could be used as basic data for clinical setting when mental health professionals intervened the Psychotheray and counseling
류경창(Ryu, Kyung-Chang) 한국산학기술학회 2010 한국산학기술학회 학술대회 Vol.- No.-
본 논문에서는 무분별한 경제 개발로 인해 변형된 자연환경의 변화를 비교체험 할 수 있도록 조선시대의 모습을 재연하여 과거와 현재의 변형된 자연환경을 비교 체험할 수 있도록 3D 기술을 이용하여 사이버공간에서 학습할 수 있는 가상체험 3D 콘텐츠를 설계하였다. 본 논문에서 연구된 콘텐츠를 이용하여 초․중등학생 및 성인을 대상으로 환경교육을 실시할 수 있는 교육활동자료로 활용하고, 일상생활 속의 환경보전에 대한 내면화 과정을 통하여 환경보전에 대한 인식과 태도를 형성하고 환경보호를 위한 지식과 기능을 학습하고 환경보호 행동을 실천할 수 있도록 돕는데 그 목적이 있다.