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SnBiAg 전도성 페이스트를 이용한 Shingled 결정질 태양광 모듈의 전기적 특성 분석
윤희상,송형준,강민구,조현수,고석환,주영철,장효식,강기환,Yoon, Hee-Sang,Song, Hyung-Jun,Kang, Min Gu,Cho, Hyeon Soo,Go, Seok-Whan,Ju, Young-Chul,Chang, Hyo Sik,Kang, Gi-Hwan 한국재료학회 2018 한국재료학회지 Vol.28 No.9
In recent years, solar cells based on crystalline silicon(c-Si) have accounted for much of the photovoltaic industry. The recent studies have focused on fabricating c-Si solar modules with low cost and improved efficiency. Among many suggested methods, a photovoltaic module with a shingled structure that is connected to a small cut cell in series is a recent strong candidate for low-cost, high efficiency energy harvesting systems. The shingled structure increases the efficiency compared to the module with 6 inch full cells by minimizing optical and electrical losses. In this study, we propoese a new Conductive Paste (CP) to interconnect cells in a shingled module and compare it with the Electrical Conductive Adhesives (ECA) in the conventional module. Since the CP consists of a compound of tin and bismuth, the module is more economical than the module with ECA, which contains silver. Moreover, the melting point of CP is below $150^{\circ}C$, so the cells can be integrated with decreased thermal-mechanical stress. The output of the shingled PV module connected by CP is the same as that of the module with ECA. In addition, electroluminescence (EL) analysis indicates that the introduction of CP does not provoke additional cracks. Furthermore, the CP soldering connects cells without increasing ohmic losses. Thus, this study confirms that interconnection with CP can integrate cells with reduced cost in shingled c-Si PV modules.
윤희상,박훈희,이찬우,최승회 국회입법조사처 2017 입법과 정책 Vol.9 No.1
The purpose of this study is for the observation of condition and demand of inactive people with spinal cord injury so that we can provide base information for building a national strategy. This research is to suggest the combined factors of health and welfare for inactive people with spinal cord injury lead independent activity of daily living. The survey showed there are more inactive people with spinal cord injury married men than women, in case of women have longer hospitalization period than men due of lack of personal assistance service. And inactive people with spinal cord injury have lower rate of health examinations, hospital visiting and regular physical activities, while higher rate of suicide impulse and there are more recipients of the national basic livelihood security and near poor than active people with spinal cord injury. In addition the people who are aware of KSCIA among inactive people with spinal cord injury, they are more active in external activities. The national policy and the concern of related society for supporting inactive person are needed in order to make them lead a proper life in their family and this society. 이 연구의 목적은 비활동척수장애인의 생활 실태와 요구를 조사하여, 비활동척수장애인에게 필요한 국가 정책 수립에 기초자료를 제공하는 것이다. 측정 도구는 121개 문항으로구성된 설문을 이용하였고, 비활동척수장애인 202명을 중심으로 분산분석과 -검정과같은 통계적인 분석을 이용하였다. 비활동척수장애인 중 여성과 이혼자의 입원 기간이길어 일상생활에 지원이 필요한 대상으로 조사되었고, 비활동척수장애인은 기초생활수급권자나 차상위계층 비율이 높았다. 또한, 건강검진과 정기적 운동 실천 비율은 낮고, 자살 충동을 느끼는 비율은 높았다. 본 연구의 결과에 따라 비활동척수장애인이 활동척수장애인으로 살아가기에 필요한 통합적인 활동지원 대책 및 사회일원으로 활동할 수 있는 정책적, 제도적 지원이 요구됨을 알 수 있다.
윤희상 대한소아청소년과학회 2005 Clinical and Experimental Pediatrics (CEP) Vol.48 No.12
Nowadays, the nutritional deficits are rarely seen in Korea. However, an increased availability of the highly palatable energy dense, nutrient-poor foods increases the risks of obesity and deficits of vitamins and minerals in the general population. Also, optimum intake of vitamins and minerals, which varies with age and genetic back ground, might not suffice the poor, young, obese, and elderly people. Young girls and individuals participating in weight reductions and aesthetic components are prone to micronutrient deficiencies because they restrict food intake and specific micronutrient rich foods. An inadequate intake of vitamins or minerals is associated with reduced physical performance and exercise capacity, increased obesity, decreased cognitive function, increased DNA damages such as single- and double-stranded breaks or oxidative DNA lesions, and accelerated aging process and increased neuronal damages with mitochondrial oxidative decay. Most of these deleterious effects of the deficit could be prevented by a one tablet of multivitamins with a good balanced diet. High dose B vitamins are frequently administered to overcome the metabolic inadequacy to the people with the less functional enzymes with increased Km values for their coenzymes due to the single gene mutation or due to the single nucleotide polymorphisms. And some certain antioxidant vitamins are also used in large quantities to overcome the oxidative stress and to repair the damages. In this review, new nutritional concepts of some vitamins and minerals, which are widely used and useful for the children, will be discussed.