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대한소아외과학회 회원의 1995년도 진료현황 및 수련경력 설문조사
김우기,김상윤,김신곤,김인구,김재억,김종석,김현학,박귀원,박영식,박우현,박주섭,송영택,양정우,오수명,이두선,이명덕,이석구,이성철,장수일,정성은,정풍만,최금자,최순옥,허영수,황의호,Kim, W.K.,Kim, S.Y.,Kim, S.K.,Kim, I.K.,Kim, J.E.,Kim, C.S.,Kim, H.H.,Park, K.W.,Park, Y.S.,Park, W. 대한소아외과학회 1997 소아외과 Vol.3 No.1
To understand the current status of pediatric surgical practice of the members of the Korean Association of Pediatric Surgeons, a survey of the practice of the 31 members in both 1994 and 1995. Twenty five members(80%) representing 20 hospitals responded. An average of four hundred and seventy four cases pediatric surgical operations were performed at individual institution in 1995 with 40 newborn cases. Eighteen members(72%) are currently working at university hospital. Fourteen institutions(70%) are currently classified as tertiary by the health insurance agency. The majority(15 to 60%) of members are working in the metropolitan Seoul area, while five in Taegu area. Sixteen members reported having the title of department head/director. Four members reported occasional non-pediatric surgical practice. Nine members out of 20 reported having independent pediatric surgical out-patient clinic before the establishment of the association(1985). Eight out of 15 members reported being appointed chief of pediatric surgery before 1985. In 20 institutions, 34 full time physicians(27 members, reportedly) are working in pediatric surgery. In regarding to pediatric surgical training, 16 members(64%) received an average of 16 months of training abroad, 5 members trained at home and abroad, and 4 from only at home. There are no differences in length of training periods in these groups. Twenty one members received their basic pediatric surgical training before 1985, the year of inauguration of the association. Twelve members received post-pediatric surgery refresher courses averaging 11 months' duration, after 2-11 years. Thirteen participants of this study belongs to the founding members of the association.
비선형 변형경로를 고려한 판재성형 한계곡선에 대한 수치적 비교 연구
김진학(J. H. Kim),임재혁(J. H. Lim),조인영(I. Y. Cho),양진아(J. A. Yang),정완진(W. J. Chung) 한국소성가공학회 2013 금형가공 심포지엄 Vol.2013 No.9
For the nonlinear strain path, traditional strain based FLD, linear FLD, reveals inaccuracies in the formability prediction. On the other hand, forming limit stress diagram, FLSD, shows superiority in formability prediction for nonlinear strain path. Nevertheless, the use of FLSD is very limited because of low sensitivity near forming limit and difficulty of understanding. Recently, effective plastic strain based FLD, EPS FLD, was proposed and supposed to get wider acceptance in the near future. In the present study, linear FLD and EPS FLD were compared for simulation of square cup deep drawing. In making of EPS FLD, numerical oscillations in deformation from simulation yield impractical oscillatory deformation paths. In order to obtain continuous and non-oscillatory deformation paths, a linear regression technique was utilized. In the comparison, EPS FLD shows different formability from linear FLD numerically. Experimental verification is strongly required to assess the suitability of EPS FLD definitely.
육계에서 사료내 황토 첨가가 성장 및 체조성에 미치는 영향
양철주,오종일,최연재,김정빈,문승태,한승관,Yang, C.J.,Oh, J.I.,Choi, Y.J.,Kim, C.B.,Mun, S.T.,Han, S.G. 한국가금학회 2006 韓國家禽學會誌 Vol.33 No.4
본 연구는 황토의 첨가가 육계의 성장, 사료 이용율, 체조성, 장기의 무게 및 분중 암모니아 생산에 미치는 영향에 대하여 연구하였다. 공시동물은 Ross broiler 216수로 6처리 6반복 반복당 6수씩 사양 시험을 실시하였다. 처리구는 1) 대조구, 2) 황토 0.5% 첨가구, 3) 황토 1.0% 첨가구, 4) 황토 2.0% 첨가구, 5) 황토 4.0% 첨가구, 6) 황토 8.0% 첨가구로 총 6처리로 나누어 실시하였다. 증체량은 황토의 첨가 수준이 증가할수록 감소하는 경향을 보였다(P<0.05). 하지만 사료 섭취량과 사료 요구율은 황토 첨가구와 대조구에서 통계적인 유의차를 보이지 않았다. 산패도는 황토 첨가구와 대조구에서 통계적인 유의차를 보이지 않았다. (P>0.05). 도체내 콜레스테롤 함량은 대조구보다 황토 첨가구에서 감소하는 경향을 보였으며, 통계적인 유의차를 보였다(P<0.05). 암모니아가스 농도를 측정한 결과 평균 농도는 대조구에 비해서 황토 첨가구의 농도가 전체적으로 모두 감소하였다.(P<0.05). 광물질 분석에서 Mn 함량은 황토 8.0% 첨가구가 대조구보다 높은 수치를 보였으며, 통계적인 유의차를 보였다.(P<0.05). 대장의 무게는 황토 2.0, 4.0 및 8.0% 첨가구에서 감소하였으며, 통계적인 유의차를 보였다.(P<0.05). 본 연구를 통하여 황토를 소량 첨가하였을 경우 증체율 개선 효과를 보였으며, 분중 암모니아 가스 농도가 대조구보다 현저히 낮아 사료 첨가제로서의 가능성을 보였다. This experiment was conducted to evaluate the effects of dietary Hwangto on growth performance and body composition in broiler chicks. A total of 216 one-day old 'Ross' broilers were assigned to 6 treatments in a completely randomized design. The six dietary treaoents were control no Hwangto added and diets containing 0.5, 1.0, 2.0, 4.0 and 8.0% of Hwangto supplementation. The weight gain of broilers tended to reduce with increasing level of Hwangto. However, there were no significant differences in feed intake and feed conversion ratio of broilers fed control and diets containing different level of Hwangto supplementation (P>0.05). There were no significant differences in TBA value of meat from broilers fed control and Hwangto supplemented diets (P>0.05). The meat cholesterol content was significantly lower in Hwangto treatment than of the control (P>.0.05). $NH_3$ concentration in feces was reduced in all Hwangto treatments (P<0.05). The Mg and Mn concentrations of meat we.e significantly higher in 8.0% Hwangto treatment than that of the control (P<0.05). The large intestine weight was significantly reduced in 2.0, 4.0 and 8.0% treatments (P<0.05).
BTL(Biomass to Liquid) 공정을 위한 합성가스 공급 시스템 개발
김영두(Y.D. Kim),김범종(B.J. Kim),문지홍(J.H. Moon),이은도(U.D. Lee),김광수(K.S. Kim),양창원(C.W. Yang),이정우(J.W. Lee),이시훈(S.H. Lee),김재호(J.H. Kim),이상봉(S.B. Lee) 한국연소학회 2012 KOSCOSYMPOSIUM논문집 Vol.- No.44
Biomass to Liquid (BTL) is an attractive option for using biomass as an renewable energy. A syngas supplying system has been designed for BTL system, based on the Fischer-Tropsche (FT) process, and long-term operation test was conducted. The syngas supplying system is composed of a fluidized bed gasifier, gas cleaning and compression system, and methanol absorption system. Stable operation of more than hundred hours was achieved with several champaigns. In addition, a pilot scale biomass gasifier has been developed for 1 bbl/day BTL system and its performance was evaluated. Some preliminary results and current status of the development of BTL system will be presented.