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RISS 인기검색어
- 검색키워드
- 저자 : 鄭光溶(Kwang-Yong Jung) (검색결과 68 건)
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오창 학소리유적 토광묘내 유리구슬의 화학적 특성 - 37호 및 40호 -
정광용,강형태,고민정,김화정,Chung, Kwang Yong,Kang, Hyung Tae,Koh, Min Jeong,Kim, Hwa Jung 국립문화재연구소 2011 保存科學硏究 Vol.32 No.-
Four glass beads from Hakso-ri site, O'chang were analyzed for thirteen oxides with SEM/EDS and lead isotope ratios with TIMS respectively. These samples were classified to potash glass system($K_2O-CaO-SiO_2$) with HCLA(High CaO, Low $Al_2O_3$). However three samples with above 4% for lead could be classified to potash-lead ($K_2O-PbO-CaO-SiO_2$)glass system and it seemed that coloring agent for greenish blue was Cu. Lead isotope ratio data for four samples did not make a group but scattered to the space respectively. It needs more study for compositions and lead iosotope data of potash-lead glasses with regions and ages.
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농축산 폐기물 처리를 위한 저온내성 (低溫耐性) 메탄 생성균의 특성에 관한 연구 - Ⅱ. 저온내성 (低溫耐性) Clostridia 의 분리 -
정광용,김재정 ( Kwang Yong Jung,Jai Joung Kim,Lacy Daniels ) 한국환경농학회 1994 한국환경농학회지 Vol.13 No.3
This study was conducted to investigate the biochemical properties of isolated bacteria, low temperature tolerant methane-producing clostridia which were selected for using them as inoculum to anaerobic fermentation of agricultural and livestock wastes at low temperature. The results were; 1. Low temperature tolerant methane-producing clostridia were isolated from the samples which showed the high methanogenesis rate by enrichment culture at low temperature in cellulose medium. These clostridia, Clostridium botulinum SRC-64, Clostridium scatologens SRC-91 and Clostridium tyrobutyricum SRC-100, were isolated from swampy sediment at latitude 56.9。N, lake sediment IV at latitude 55.0。N, and tidal land soil II at latitude 37.0。N, respectively. The optimum growth temperature for these isolates was 37℃ and the minimum, around 10℃. They all had detectable amount of F_(420), specific coenzyme of methanogens. 2. As anaerobic fermentation products of glucose SRC-64 produced H₂, acetic, isovaleric and caproic acid, SRC-91 produced H₂, propionic, butyric, valeric, and caproic acid, and SRC-100 produced only acetic and propionic acid. The isolates were produced CH₂ ranged from 2.6 to 8.68 n moles/㎖ for 2 days at 13℃.
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정광용,정연준,김찬영,양두현,김재천,Jung, Kwang-Yong,Jeong, Yeon-Jun,Kim, Chan-Young,Yang, Doo-Hyun,Kim, Jae-Chun 대한소아외과학회 2004 소아외과 Vol.10 No.1
A total of 30 cases of the peptic ulcer in children, who underwent operations from January 1981 to December 1995 because of complications at Department of the Surgery, Chonbuk National University Medical School, is reviewed. Twenty-three were males (76.7%), 7 females (23.3%) and male was preponderant at 3.3:1. There were 25 cases (83.3%) age 10 to 15 years, 3(10.0%) between 2 and 9 years, and 2 (6.7%) below 2. The ulcer was located at duodenum in 27(90.0%), and at stomach in 3 cases (10.0%). Complications were perforation in 19 cases (63.3%), pyloric obstruction in 9 (30.0%) and bleeding in 2 (6.7%). For perforation, truncal vagotomy with pyloroplasty was done in 11 cases, truncal vagotomy with hemigastrectomy and gastrojejunostomy in 6, and simple closure in 2 cases. For obstruction, truncal vagotomy with hemigastrectomy and gastrojejunostomy was done in 5, and truncal vagotomy and pyloroplasty in 3 cases. For bleeding lesions, truncal vagotomy and pyloroplasty was performed in 2 cases. Ten postoperative complications developed in 9 patients: adhesive ileus in 5, recurrence in 2, pneumonia 2, and wound seroma 1 case. One patient developed a primary duodenal perforation and another a recurrent obstruction. Both of patients had symptoms for more than 3 years and were treated with truncal vagotomy and pyloroplasty for the primary operations. Hospital stay was 11.5 days for the patient with perforated ulcer, 11.0 days for the patient with pyloric obstruction, and 14.5 days for the child with bleeding. Average hospital period was 11.6 days. To reduce recurrences after operation, extensive procedure such as distal gastrectomy with vagotomy at the first operation should be considered in case with severe complication or with patients who have been symptomatic for long periods.
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농축산 폐기물 처리를 위한 저온내성 (低溫耐性) 메탄 생성균의 특성에 관한 연구 - 1. 저온조건에서 시료별 메탄 생성기작 연구 -
정광용,김재정 ( Kwang Yong Jung,Jai Joung Kim ) 한국환경농학회 1993 한국환경농학회지 Vol.12 No.1
The Study was conducted to develope the low temperature tolerant methane-producing bacteria(LTTB) and to increase the efficiency of anaerobic fermentation for the treatment of agricultural and livestock wastes at low temperature. The samples were collected from muddy soil, water logged sediment, organic layer and anaerobic sludge at three latitudes, 34.8~37.4 ˚N(Korea), 41.4 ˚N(USA) and 54.5~56.9 ˚N(Canada). They were used for determination of the methanogenesis rates for isolation and identification of the LTTB. The methanogenesis rate of smaples at low temperature were higher in the cellulose medium than methanol medium. The methanogeneses rate in the samples of subarctic region were 15~19 moles/ml during 30 days at low temperature(8 ℃), whereas not detected in the samples of temperate region. The methanogenesis rate in the enrichment culture of subarctic samples were inhibited by the 40 ㎍/ml of streptomycin + vancomycin or ampicillin + oleandomycin which were not effect to the methanogens. An inhabitation of high temperature tolerant methane producing bacteria was identified in the samples of temperate region, whereas that of the LTTB growing at 8~13℃ was identified in the subarctic region.
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농축산 폐기물 처리를 위한 저온내성 (低溫耐性) 메탄 생성균의 특성에 관한 연구 - Ⅲ. 저온내성 (低溫耐性) Methanogens 의 분리 - (
정광용,김재정 ( Kwang Yong Jung,Jai Joung Kim,Lacy Daniels ) 한국환경농학회 1996 한국환경농학회지 Vol.15 No.3
This study was conducted to investigate the biochemical properties of isolated bacteria, low temperature tolerant methanogens which were selected for use as inoculum for anaerobic fermentation of agricultural and livestock wasted at low temperature. The results, obtained were summarized as follows: Low temperature tolerant methanogens were isolated from the samples which showed the high methanogenesis rate by enrichment culture at low temperature in methanol medium. These methanogens, Methanobacterium M-251 and Methanobacterium M-253 were isolated from swampy sediment at latitude 56.9°, Methanosarcina mazei M-372 from lake sediment IV at latitude 55.0。N, and Methanobacterium formicicum M-375 from tidal land soil at latitude 37.0。N, respectively. The isolated anaerobic bacteria could not use sugars as carbon sources. The optimum pH value for the growth of M-251 and M-375 was 6.8, but those for M-253 and M-372 6.5 and 7.0, respectively. The minimum growth temperature of isolated, M-251 and M-253 were 8℃ and the optimum temperature 30℃, while the minimum of M-392 and M-395 were 13℃ and the optimum 37℃. The growth rate of isolates at 17.5℃ were lower by 32-50% than that of 30℃. The isolated Methanobacterium strains such as M-251, M-253, and M-375 have lower cell yield, 0.38-1.21g/1M CH₄than 1.14-1.51g/1M CH₄of Methanosarcina mazei M-372.
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고층 사무소 건축의 외부형태에 나타난 조형적 장식 표현에 관한 연구 -1980년 이후 국내 사례를 중심으로-
정광용(Kwang-Yong Jung) 한국산업융합학회 2002 한국산업융합학회 논문집 Vol.5 No.4
The focus of this study is that spacial, material, functional, cubical reasons are visually expressed on high-rise office Architecture in Korea according to the period of their completion. Office buildings are analyzed in three of exterior composition : Lower, Middle, Top part of the Building, Comparing the whole composition of the Building, forty-five types of compositions are extracted ; expression of formal, material, structural, functional Decoration which show the tendencies of Korean office buildings.
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