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김준수,조재영,이재경,박아름,박진혁,윤현목,전연수,Kim, Joon Soo,Cho, Jae Young,Lee, Jae Kyung,Park, Areum,Park, Jin Hyuk,Yun, Hyun Mok,Jun, Yun-Su 한국자원리싸이클링학회 2019 資源 리싸이클링 Vol.28 No.5
Recently, it is increasing a amount of installized solar-cell rapidly, and waste Solar cell module are generated in according to the reduction of efficiency largely. Therefore, it is concerned at the environmental problems and recycling of valuable materials, greatly. The treatment processes of end-of-life photovoltaic modules are composed the disassembly of Aluminum frames, separation of Tempered glass, removal of Ethylene Vinyl Acetate and recovery of valuable Metals. For the efficient recycling, we are considered to the treatment technology seriously. And we are proposed on the general opinions according to the developing technology, EPR (Extended Producer Responsibility) problems and promotion plans for the activation of recycling industry.
김준수,전연수,전정혁,조재영,Kim, Joon Soo,Jun, Yun-Su,Jun, Jung Hyuk,Cho, Jai Young 한국자원리싸이클링학회 2021 資源 리싸이클링 Vol.30 No.3
Currently, there is a drain of natural resources, environmental contamination, generation of waste, and problems of the earth's climate by CO<sub>2</sub> emissions according to mass production and overconsumption of mankind. It is effectuated by a linear economy that involves manufacturing products, use, and waste repeatedly; there is no guarantee in the lives of humans and the future of the globe if we do not find alternative proposals. For a sustainable developing society and to overcome the present global problems, we must successively change to a circular economy from a linear economy. The circular economy has the concept of an extended value chain in recovery, reuse, remanufacturing, and recycling, instead of discarding after the use of manufactured goods. New business models of circular economy have been realized to save the earth ecology and sustainable developing society in serious recognition of the linear economy system. New business models are established by creating a vision and developing a program, and by renovating technology, law, and financial support through a worldwide government policy.
강황 섭취 또는 저항 운동과의 복합 처치가 성인 남성의 간 기능 효소들에 미치는 영향
백승준 ( Seung-Joon Paek ),이상현 ( Sang-hyun Lee ),박정수 ( Jung Su Park ),김준수 ( Jun-soo Kim ),박동호 ( Dong-ho Park ) 한국운동생리학회(구 한국운동과학회) 2021 운동과학 Vol.30 No.2
PURPOSE: This study aimed to investigate the effect of turmeric intake alone or in combination with resistance training on liver enzymes in adult men who regularly consumed alcohol at least twice a week. METHODS: Twelve men (age: 36.0±5.26 years, weight: 99.9±17.9 kg, and height: 184.0±6.5 cm) were randomly assigned to the turmeric intake (2-3 g/day) alone (TI, n=6) group or the TI plus resistance training (60 minutes of RT 3 times a week) (TI+RT, n=6) group for 8 weeks. Blood was collected before and after 8 weeks of treatment. The analyzed variables included glutamic oxaloacetic transaminase (GOT), glutamic pyruvic transaminase (GPT), γ-glutamyl transferase (γ-GTP), and GOT/GPT ratio. RESULTS: There was no significant interaction effect in all variables, but the main effect was found in all variables only in TI+RT group. The Cohen’s d effect size on the main effects of the TI+RT group on GOT (d=0.548), GPT (d=0.835), γ-GTP (d=0.623), and GOT/ GPT ratio (d=0.800) ranged from 0.548-0.835, respectively. However, body composition such as percent body fat (%, p>.05) and muscle mass (kg, p>.05) did not show the main effect on time points as well as the interaction effect (p>.05). CONCLUSIONS: Although the 8-week TI treatment did not show any statistically significant change, TI treatment showed a tendency to decrease in GOT, GPT, and γ-GTP, and the GOT/GPT ratio tends to increase. Therefore, there was a synergic effect of the TI plus RT treatment or the sum of the two treatments for 8 weeks.
조재영,박아름,윤현목,전연수,김준수,Cho, Jai Young,Park, Areum,Yun, Hyun Mok,Jun, Yun-Su,Kim, Joon Soo 한국자원리싸이클링학회 2020 資源 리싸이클링 Vol.29 No.4
Recently, it is increasing a amount of installed solar-cell rapidly, and end-of-life photovoltaic(ELP) modules are generated in according to the reduction of cell efficiency largely. Recycling of ELP modules are begun at an advanced nation already, but there are bring about environmental contamination and resource recovery problems owing to not treated ELP modules because of economic cost completely. First of all, there were researched basic study for treatment conditions of used solar cell inspection, dismantling of aluminum frame, crushing / grinding & separation of tempered glass, removal of back sheet & EVA film, leaching & precipitation recovery of valuable metals and treatment of waste water. Therefore, we establish optimum conditions through carried out of designed apparatus, installation of equipment, test operation & trouble shooting in scale of 1ton/day pilot plant test. Following to economic review, it does have the economic efficiency until to the case of tempered glass recovery, but does not have the economic value in case of total processes until to recover the valuable metals. However, there are guaranteed economic value if we are gained a large amount of the expenses through EPR supported system. It was confirmed the commercialized possibility of ELP modules recycling if there were established on the collecting ELP modules, reusing criteria, economical technology, enactment of directives and enforcement of EPR supported system efficiently.
풍력발전기용 밀폐형 변압기의 식물성 절연유에 대한 열적특성 연구
이성원(Sungwon Lee),이준엽(Joon-Yeob Lee),김준수(Jun-Su Kim),우재희(Jae-Hi Woo),김동해(Dong-Hae Kim) 대한기계학회 2012 大韓機械學會論文集B Vol.36 No.1
변압기 외부에 방열핀을 설치한 밀폐형 오일변압기는 절연유의 온도상승으로 인해 부피가 팽창할 경우 방열핀의 내부 부피가 확장되어 압력상승을 방지한다. 본 연구에서는 생분해도가 높아 환경친화적이고, 인화점 및 발화점이 높아 화재의 위험도가 낮은 식물성 절연유를 이용하여 당사 풍력발전기에 적용할 밀폐형 오일변압기를 개발하였다. 열·유동 전산수치해석 기법을 이용하여 식물성 절연유 냉각성능을 광유 및 실리콘유와 비교·분석 하였으며, 밀폐형 오일변압기의 개발을 위하여 변압기 중신부의 열적안전성을 확보하고 절연유의 온도변화에 따른 내부 압력변화에 대응이 가능한 팽창형 방열핀을 개발하였다. 추가로 온도상승시험을 통하여 수치해석 결과와 시험 결과를 비교 분석 하였으며, 식물성 절연유를 사용한 밀폐형 오일 변압기의 설계 고려사항을 도출하였다. A hermetically sealed oil transformer is designed by applying expanding function of the tank due to the volume changes of the insulation oil according to the temperature rises. When the insulation oil expands, an increase in the volume of the corrugated fin prevents a pressure rise of the transformer. For a wind turbine transformer, a vegetable-oil?immersed transformer has the advantages of excellent biodegradation and fire-resistant properties like an exceptionally high fire point. When vegetable oil is substituted for mineral oil, however, the maximum winding temperature rises because of the decrease in the internal circulation flow rate resulting from the variations of the oil’s physical characteristics, such as density and viscosity. The purpose of this study is to develop a hermetically sealed vegetable oil transformer that can be applied in a wind turbine and to analyze the thermal stability of the active part of the transformer to deal with pressure variations due to the temperature changes. In addit ion, thermal tests for the vegetable oil transformer have been performed, and the measured values are compared with the analysis results.
풍력발전기용 밀폐형 변압기의 식물성 절연유에 대한 열적특성 연구
이성원(Sungwon Lee),이준엽(Joon-Yeob Lee),김준수(Jun-Su Kim),우재희(Jae-Hi Woo),김동해(Dong-Hae Kim) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.11
Hermetically sealed oil transformer is designed by applying expanding function of the tank due to the expansion of the insulation oil according to the temperature rise. When the insulation oil expands, an increase in the volume of the radiator fin prevents pressure rise of the transformer. For the wind turbine transformer, the vegetable oil immersed transformer has advantages of excellent biodegradation and fire-resistant properties like exceptionally high fire point. In case of substituting vegetable oil from mineral oil, however, maximum winding temperature rises because of the decrease in internal circulation flowrate resulting from the variation of physical characteristics such as density and viscosity. The purpose of this study is to develop the hermetically sealed vegetable oil transformer which is applied for the wind turbine, and to analyze the thermal stability for the active part of the transformer to deal with the pressure variation due to the temperature change. The amount of expanded oil inside the radiator has been evaluated for different operating load and insulation oil cases.
오승민,남혜윤,김준수,연제덕,신대희,이진영,박대규,조명행,정규혁 성균관대학교 약학연구소 1998 成均藥硏論文集 Vol.10 No.1
The acute and subacute toxicity of New Woohwangchungsimwon(NWCH) which was used l-muscone as substitutive material of musk were investigated in S.D. rats. In intraperitoneal acute toxicity test, rats(Sprague-Dawley, SPF) were injected intraperitoneally with dosages of 0, 540, 750, 1,070, 1,500 and 3,000 ㎎/㎏. Body weights were significantly decreased at 540 ㎎/㎏ dose group in both sexes and abnormal autopsy findings were founded in both sexes at all treated groups. Intraperitoneal LD_50 of NWCH was 812.3 ㎎/㎏ in male and 872.3 ㎎/㎏ in female rats. In the subacute toxicity study, NWCH was administrated orally to both sexes of rats for 4 weeks as several doses(0, 320, 800 and 2,000 ㎎/㎏). There were neither dead animals nor significant changes of body weights during the experimental period. In addition, no differences were found between control and treated groups in clinical signs, urinalysis, hematology, serum biochemical analysis, and other findings. Above data strongly suggest that no observed adverse effect level of NWCH might be over 2,000 ㎎/㎏/day in this study.