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백명진(Baek, Myung-Jin),이상규(Lee, Sang-Gyu),유상범(Sang-Bum Ryu) 한국항공우주연구원 2018 항공우주산업기술동향 Vol.16 No.2
차세대중형위성 2단계 개발 사업의 목표는 다목적실용위성 개발 사업을 통하여 개발된 성숙된 기술력을 바탕으로 차세대중형위성 1단계 사업을 통해 국산화한 500kg급 표준플랫폼을 활용하여, 향후 다양한 공공 위성수요를 충족하고 우리나라 위성산업을 활성화하는 것이다. 이를 통해 산업체 주도에 의한 중형위성개발을 통해 위성제조업을 육성하고 수출시장개척 기반을 구축할 예정이다. 차세대중형위성 2단계 개발 사업은 예비타당성 조사 결과에 따라 총 2기(전자광학카메라 위성 및 C-Band 영상레이다 위성)의 위성개발이 예상되나, 당초 차세대중형위성 2단계 개발 사업으로 검토되었던 4기의 위성과 관련된 개발동향 및 활용계획을 본 논문에서 소개하고자 한다. The goal of the 2<SUP>nd</SUP> stage Compact Advanced Satellite development program, based on matured technologies developed by KOMPSAT(Korea Multi-Purpose Satellite) program and aimed for fulfilling future various governmental demands and vitalizing domestic satellite industry, is to develop Compact Advanced Satellites using the 500kg standard platform koreanized throughout the 1<SUP>st</SUP> stage Compact Advanced Satellite development program. Throughout the satellite development led by domestic industries, it is planned to promote the satellite manufacturing industry and to establish the foundation of export market development. Even though it is expected to develop total two satellites (electro-optic camera satellite and C-band SAR satellite), as the 2<SUP>nd</SUP> stage Compact Advanced Satellite development program, according to the final result of the government Preliminary Feasibility Study, development trend and application plan related to 4 satellites examined as the 2<SUP>nd</SUP> stage Compact Advanced Satellite development program are described in this paper.
Eunju Kim,Seong Bum Kim,Youl Chang Baek,Min Seok Kim,Changyong Choe,Jae Gyu Yoo,Younghun Jung,Ara Cho,김수희,Yoon Jung Do 한국동물위생학회 2018 韓國家畜衛生學會誌 Vol.41 No.4
Rumen cannulation is used for nutritional and microbiological research, clinical diagnosis, and rumen component transfaunation. However, the cannulation procedure can affect parameters such as complete blood count findings, serum chemistry, and rumen fluid pH. The objective of this study was to evaluate the health risks related to the rumen cannulation procedure over a 1-month period. We did not identify significant differences in red blood cell numbers or morphologies between pre- and postoperative timepoints. Moreover, no inflammation or infection was detected. Despite the absence of apparent clin-ical signs after surgery, serum chemistry results revealed changes in blood urea nitrogen levels and the activities of liver enzymes, including aspartate transaminase, lactate dehydrogenase, and creatinine kin-ase, from postoperative days 1 to 14. Rumen fluid pH, as measured from samples collected via an or-ogastric tube, was slightly increased after a preoperative fasting period and on postoperative day 1 but decreased thereafter from postoperative day 4, indicating a minor influence of cannulation surgery on ruminal fluid pH. This is the first study to evaluate hematological parameters and rumen pH before and after rumen cannulation surgery in Hanwoo cattle. Further research is required to better elucidate the potential effects of rumen cannulation surgery on animal health.