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병재배 폐톱밥을 이용한 양송이 복토재료 개발에 관한 연구
김홍규,이희덕,김용균,한규홍,문창식,김홍기 충남대학교 생물공학연구소 1999 생물공학연구지 Vol.7 No.-
애느타리 병재배후 탈병한 톱밥을 3월 중순 퇴적하여 부숙시킨 결과 퇴적기간에 따른 폐톱밥의 부숙정도는 퇴적 30일이후에 가장 컸으며 부숙 소요일수는 최소 48일이었다. 퇴적 기간에 따른 폐톱밥의 pH 및 총 질소 함량은 부숙이 진전됨에 따라 증가하는 경향이었고 총 탄소 및 C/N율은 시간이 경과함에 따라 감소하는 경향이었다. 식양토에 부숙이 완료된 톱밥을 부피 비율로 10, 30, 50%씩 첨가하여 복토 재료로 사용한 결과 30% 첨가시 식양토 단용 처리보다 A. bisporus 균사 생장이 촉진되고 초발이 소요일수가 5일 빠르며, 수량에 있어서도 28% 증수되었다. After bottle culture of Pleurotus ostreatus, sawdust was taken out from the bottle and accumulated in the middle of March, and then composted. As the result, Y value was decreased rapidly 30 days after composting, and it was decreased slowly after 30 days. It is considered that 118 days is required for composting, however, it is possible to use for casing material after at least 48 days composting. The pH and total nitrogen content of sawdust based on composting period had tendency to increase as composting was processed. Total carbon and C/N rate had tendency to decrease as time went on. Based on the rate of 10, 30 and 50%, each sawdust was added to clay loam used as casing material for culturing A. bisporrus. Among various treatments, the mycelial growth of A. bisporus was more favorable in the treatment of 30% sawdust than in the single treatment of clay loam. Based on the date necessary for primodium formation of A. bisporus, the primodium formation in the treatment of 30% sawdust was reduced to about 5 days as compared with that of any other treatments When 30% sawdust was added to clay loam used as casing material for culturing A. bisporus, the yield of its fruiting body was increased to 28%.
SUS 304 마이크로 와이어 직선화 처리에 관한 연구
신홍규,김남수,김웅겸,홍남표,김병희,김헌영 江原大學校 産業技術硏究所 2004 産業技術硏究 Vol.24 No.A
In the study, we have developed a straightening system for the SUS 304 micro wires that are normally used in the medical and semi-conductor fields. To apply heat to the micro wires, we introduced the direct wire heating method which generates the thermal energy by the electrical resistance of the wire itself. To avoid the deterioration of the wire surface by the environment, such as the oxidation or the hydration, the N_(2) gas was filled in the glass pipe in which the straightening process was being performed. A precision tension meter was also attached to control the tension of the wire during the heating and straightening process. In order to control the straightening process, several experimental investigations with varying the tension, the feeding velocity and the temperature (current) was carried out. As a result of experiments, we obtained the optimal processing conditions satisfying the straightness requirement of the micro wires.
김규창,홍성헌 대구효성카돌릭대학교사회과학연구소 1999 사회과학논총 Vol.1 No.-
The purpose on analysis and estimation of political risk in the international business activities, can be summarized as to make a better framework for appreciating the relationship between political environment and sources of political risk. Foreign investment enterprises recognize increasingly the importance of political risk elements in many foreign investment and operating decisions. For political risk analysis in this study two methods are introduced, one is Scenario framing method and the other is political map method. Generally, the most important thing in the political risk estimation is not to choose how to estimate but to understand widely investment environment of the concerned countries to estimate.
김남규,박홍진,김영찬,고영삼 중앙대학교 정보통신연구소 2000 정보통신연구소논문집 Vol.2 No.2
웹 기술과 컴퓨터 하드웨어 기술이 빠르게 발전함에 따라 편리하고 현실적인 인터페이 스는 전송시간과 실행시간 보다 중요�. VRML은 웹에서 가상 현실을 구현하는 적합한 언어지만 일반 사용자에게 사용하기에 너무 어렵다. 또한, VRML이 변경될 때 마다 다시 구성해야하는 복잡성이 있다. 이러한 문제를 해결하기 위해 본 논문을 웹 기반의 VRML 저작도구를 구현한다. 또한 기존의 VRML과 데이터베이스 시스템을 분석하여 확장된 VRML 지원 시스템을 구현하여 이를 평가한다. As the web technology and the computer hardware have been rapidoy evolving, the convenient interface and reality is more important than the transmission time and the execution time. For satisfying these requirements, VRML is the most suitable language to implement virtual reality on the Web. However, it is too difficult for non-expert to use VRML. It is also complicated to reconstruct VRML whenever it changes. In order to resolve these problems, this paper implements VRML Authoring Tool based on web. Also, this paper analyze the problem of the existing the cooperating VRML and Database system, implement the extended VRML supporting system. and evaluate it with the existing system.
대구지하철화재 현장 수습체계 분석을 통한 신도시 재난대응체제 구축에 관한 연구
홍원화,김태현,전규엽 대한건축학회 2004 대한건축학회논문집 Vol.20 No.10
The disaster was breaking out at JungAnglo station in Daegu It might be ended as a typical fire happening but proceeded to the disaster because of the inappropriate system of disaster prevention we had taken, the lack of understanding and specialization about Even though many cities have been studied about disaster prevention The synthesis operation and management of disaster prevention we used before have not been prevention system Thus investigating and analyzing document about international and domestic urban fire and disaster system keep us, being in force and studying at present We try to get the point and search the system of advanced nation Up to now, the conditions of damage from disasters and accidents in Korea are getting disaster system We compare to system of disaster Japan, American and Korean This is the introduce abstract of fire disaster at Daegu subway and Sampoong department store This study of analyze of the Timetable and system for settlement resulted from disasters too And we setup new disaster confrontation system
생물학적 질소·인 제거를 위한 SMMIAR(Submerged Moving Media Intermittent Aeration Reactor) 공정의 운전 특성
김홍태,김학석,김규창 한국환경과학회 2003 한국환경과학회지 Vol.12 No.1
This study was carried out to obtain the operating characteristics of SMMIAR process for biological nitrogen phosphours removal. SMMIAR was operated at HLR(Hydraulic loading rate) of 39.6, 52.8, 63.4 and 79.2 ℓ/㎥/d respectively and the operating parameters such as intermittent aeration tine ratio of aerobic/anoxic, DO and microorganism concentration were change to confirm the optimum operating condition. The concentration wastewater BOD, TN(Total nitrogen) and TP(Total phosphours) were 150, 30 and 7.5㎎/ℓ respectively. Achieving better removal effciencies of BOD, TN and TP up to 90,85.4 and 95.4% respectively, we must keep in operation condition of SMMIAR by 0.75 of time ratio of aerobic/anoxie and by minimum 45 minutes of oxic period simltaneously.