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홍순석(Soon-Seok Hong),박상전(Sang-Jeon Park),홍종준(Chong-Joon Hong) 유기성자원학회 1998 유기물자원화 Vol.6 No.1
농 • 축 · 수산 유통집하장에서 발생하는 유기질 폐기물의 메단 전환 기초 연구로서 실험실 규모로 수행하였다. 선발된 Run B 시료는 분석 결과 C/N Ratio는 18.41 , TCOD는 168, 960 mg/L의 것이 얻어졌다. 생화학적 메탄 생산성 실험에서 이론 생산량은 313. 6 mg/L VS added 이었고 실질적인 생산량은 234.2 mg/L VS added로 혐기성소화에 의한 74%의 메단 전환이 얼어났으며,반응속도론적고찰에서 속도 상수는 0.2476d- 1 이었다. 그리고 3단 여과막 충진형 반응기는 공시험 반응기보다 메탄함량은 16% 높고, TCOD 벚 SCOD는 각각 44.7% 벚 44.2%가 감소되었다. A fundamental study on methane conversion for the collection organic wastes of agriculture , forestry and fishers was performed in a laboratory scale. As a result, selected Run B sample were obtained 18.41 C/N Ratio and 168.96 mg/L TCOD; Under the biochemical methane potential test , theoretical and actual methane generation was 313.6 mg/L VS added and 234.2 mg/L VS added, respectively; However, methane conversion from Run B were occurred 74% by anaerobic digestion. By the first order reaction kinetics, kinetic constant were 0.2476 d-1 for Run B. Three steps fill-up fi 1ter reactor was evaluated methane content 16% up to promote than blank reactor; TCOD and SCOD have reduced 44.7% and 44.2%, respectively.
이동통신환경에서 사용자 프라이버시 보호를 위한 익명 시스템
김구창(Goo-Chang Kim),박창설(Chang-Sul Park),김순석(Soon-Seok Kim),박창윤(Chang-yun Park),김성권(Sung-Kwon Kim) 한국정보과학회 2002 한국정보과학회 학술발표논문집 Vol.29 No.2Ⅰ
최근 이동통신 사용자수의 증가로 각 통신사업자들은 이동 네트워크가 더욱 원활하게 동작할 수 있도록 인프라를 향상시키고, 업그레이드하고, 고도화시키는데 많은 노력을 기우리고 있다. 그러나 이러한 노력들에 비해 이동통신 사업자나 혹은 서비스 제공자들로부터 사용자의 위치정보나 이동내역정보 등과 같은 개인 프라이버시를 보호하는데 필요한 노력을 아직 미비한 실정이다. 현재까지 TP(Temporary Pseudonym) [3,4]등과 같은 사용자의 프라이버시를 보호하기 위한 여러 연구들[6,7]이 이루어지고 있으나 문제점들을 개선한 새로운 익명 시스템을 제안하고, 아울러 제안한 시스템의 시뮬레이션을 통하여 그 성능을 검증해보고자 한다.
이수향 ( Su Hyang Lee ),김상협 ( Sang Hyeob Kim ),이은주 ( Eun Joo Lee ),박순석 ( Soon Seok Park ),김아영 ( Ah Young Kim ),이은미 ( Eun Mi Lee ),이명미 ( Myeong Mi Lee ),성수은 ( Soo Eun Sung ),황미열 ( Meeyul Hwang ),권영삼 ( You 한국동물위생학회 2015 한국동물위생학회지 (KOJVS) Vol.38 No.3
A 7 years old, female and neutered ferret (Mustela putorius furo) was presented to local animal hospital due to lethargy, anorexia and hypothermia. Radiography, ultrasonography and blood test were performed. On the basis of clinical signs and tests, this case was presumed to be lymphoma. In consideration of this ferret’s condition, chemotherapy was carried out for the treatment. However, the ferret died a few days. After necropsy, metastatic tumors were observed over abdomen. All tumors were packed with homologous lymphocytes with pleomorphic changes and numerous mitotic figures. Consequently, this masses were diagnosed as B-cell gastrointestinal lymphoma, which were negative for CD3 on immunohistochemistry.
徐仁輔,朴淳碩 영남이공대학 1990 論文集 Vol.19 No.-
In this paper, fracture toughness test is practiced for the GC25, DC45 and DC70 materils. These specimens are initiated to center crack in circular plate. These contents are as followings. Namely, fracture toughness value are obtained by varing a/ R. Here, a is initial crack length and R is radius of circular plate. Relationships between compression load and displacement. Relationships between metallographic microscope structure and fracture propagation shape. Fracture characteristic is represented to crack initiation load subjected to a/R.
徐仁輔,朴淳碩 영남이공대학 1991 論文集 Vol.20 No.-
The fracture of brittle materials occurs at a shear stress. Thus, it is important from an engineering point of view to study mode Ⅱ fracture toughness and the combined mode fracture criterion. So that, a circular speciman with an central crack is used to investigate mode Ⅰ, mode Ⅱ and combined mode fracture toughness. This method has the advantage of allowing successive measurement of mode Ⅰ and mode Ⅱ and combined mode fracture toughness by using the same type of specimens. Three kind of cast iron, i.e. GC25, DC45 and DC70 are examined to obtain the fracture toughness and fracture criterion.