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이관복,신광수,박성주 대전대학교 기초과학연구소 2002 自然科學 Vol.13 No.1
혐기성 소화 방식으로 분뇨를 처리하는 무방류식 자연발효화장실의 혐기성 세균을 연구하기 위하여 모형 화장실을 제작 가동하면서 혐기성 소화가 일어나는 발효조의 분뇨를 채취하여 모두 19개의 혐기성 세균 균주를 순수 배양하였다. 이들에 대하여 생화학적 특성을 조사하였으며 이를 기초로 한 표현형적 동정과 이와 동시에 165 rRNA 유전자의 염기서열 분석으로 동정을 실시하였다. 19개의 분리균주 가운데 3개는 분뇨의 주성분인 탄수화물 분해능이 거의 없었으며, 8개는 15℃에서도 생장 가능하였다. 표현형 및 유전자 동정이 모두 실시된 10개의 균주가 동일한 동정 결과가 나타난 것은 하나도 없었다. 유전자 동정 결과 9개가 Low G+C gram-positive bacteria 즉 Bacillus/Clostridium group에 속하였으며 이 가운데 8개가 Enterococcus 속이었다. The model human manure digestion tank without effluent was constructed and operated for studying anaerobic bacteria participating in anaerobic digestion of human manure. A total of 19 anaerobic bacterial pure isolates were obtained from human manure samples in the digestion chamber. Their phenotypic characteristics were examined by various biochemical tests, by which the isolates were identified. In addition. their genotppic identification were carried out by the 16s rDNA base sequence analysis. Three culturable isolates did not ferment carbohydrate compounds which are main constituents of human manure. Eight isolates grew at 15-C. None of ten showed the same identification results by phenotypic and genotypic tests. The 16s rDNA base sequence analyses showed that nine isolates of ten belong to Low G+C gram-positive bacteria, and eight of which belong to genus Enterococcus.
서방성 Cephalexin-Eudragit^� 마이크로캅셀의 생물약제학적 평가
한건,김광덕,정연복,지웅길,김신근 충남대학교 약학대학 의약품개발연구소 1993 藥學論文集 Vol.9 No.-
Microcapsules(Mc) of cephalexin (CEPH), using Eudragit RS, RL, L, S and polyethylene glycol 1540, were evaluated biopharmaceutically. The area under the curve of CEPH-Eudragit RS/RL Mc administered orally once was larger than that of cephalexin powder twice every 6 hrs. Controlled-release effectiveness and the absorption rate effectiveness, two important parameters of Vallner's method, of CEPH-Eudragit RS/RL Mc indicate that these Mc can be good sustained-release preparations. And a simple pharmacokinetic model is introduced which allows the gastric emptying and intestinal-transit rates of a drug itself and a solid-state drug contained in Mc. Decreasing k, without change in k_α showed that the rate-limiting step of absorption moved from absorption step to release-step.
신광복(Shin Kwang-Bok),류봉조(Ryu Bong-Jo),이재열(Lee Jea-Youl),이상진(Lee Sang-Jin),조세현(Jo Se-Huen) 한국철도학회 2005 한국철도학회 학술발표대회논문집 Vol.- No.-
We have evaluated the structural integrity of a sandwich composite train roof which can find a lightweight, cost saving solution to large structural components for rail vehicles in design stages. The sandwich composite train roof was 11.45 meter long and 1.76 meter wide. The reinforced frame was inserted in sandwich panels to improve the structural performance of train roof structure and had the shape of hollow rectangular box. The finite-element analysis was used to calculate the stresses, deflections and natural frequencies of the sandwich composite train roof against the weight of air-condition system. The 3D sandwich FE model was introduced to simulate the hollow aluminum frames which jointed to both sides of the sandwich train roof. The results shown that the structural performance of a sandwich composite train roof under load conditions specified was proven and the use of aluminum reinforced frame was beneficial with regard to weight savings in comparison to steel reinforced frame.
복합재료를 적용한 한국형 고속틸팅열차(TTX)의 차체 구조해석 연구
신광복(Shin Kwang-Bok),구동회(Koo Dong-Hoe),박기진(Park Kee-Jin) 한국철도학회 2003 한국철도학회 학술발표대회논문집 Vol.- No.-
The use of composite materials for the carbody structures of tilting train has many advantages because of manufacturing variety, specific high-strength & stiffness characteristics, and long-life durability, but the strongest advantage is the possibility of lightweight product. In the leading countries, the composite materials are used for the material for drivers" cabs, interior/exterior equipments for railway train, and it is now developing the composite materials applied for the train carbody structure. In this paper, we conducted the evaluation of structural stability for the all aluminum carbody, all composite carbody and hybrid carbody structures of the Korean Tilting Train eXpress(TTX) with the service speed of 180㎞/h.
180㎞/h급 한국형 틸팅열차 복합재 차체 구조물의 안정성 평가
신광복(Kwang Bok Shin),한성호(Seoung Ho Han),박기진(Kee Jin Park) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.8
Using composite materials for the carbody of tilting train has many advantages such as manufacturing variety, specific high-strength & stiffness characteristics, and long-life durability, but the strongest advantage could be the possibility of lightweight product. In the leading countries, the composite materials are used for the material for drivers' cabs, interior/exterior equipments for railway train, and it is now developing the composite materials applied for the train carbody structure. In this paper, we conducted the evaluation of structural stability for the aluminum and composite carbody of the Korean Tilting Train eXpress(TTX) with the service speed of 180㎞/h.
신광복(Shin Kwang-Bok),조세현(Cho Se-Hyun),이상진(Lee Sang-Jin) 한국철도학회 2004 한국철도학회 학술발표대회논문집 Vol.- No.-
The hybrid composite carbody structures were considered as the carbody system of Korean Tilting Train express(TTX) to achieve the lightweight design. The TTX carbodies are composed of the carbody shell made of the sandwich composite structure and the underframe made of the metal structure. The sandwich structures were used to minimize the weight of carbody, and the metal underframe was used to modify the design easily and to keep the strength of underframe by the installation of the electrical equipments. The sandwich carbody structures will be cured in an autoclave. In this paper, the manufacturing processes of the TTX carbody structures were introduced briefly.