쓰레기 매립장의 LFG 이용에 관한 기초연구

장성호,이덕생,김수생 동아대학교 환경문제연구소 1995 硏究報告 Vol.18 No.2

In this research, the optimum LFG pilot plant of extraction, purification, and application are selected by economic analysis, constructed and operated for the development of the standard LFG utilizing process process proper to domestic landfill. LFG recovery pilot plant was constructed at the base of the result of optimized design and economic evaluation performed at S,D landfill(landfil1 area : 514,345m², landfill depth : 23-39m, landfill MSW amount : 12,808,317m³, landfill period : 87.6-93.5) in Pusan. It was consisted of four extraction well(two extraction well with 18.5m depth, two extraction well with 10m depth), collection head with 160m length, scrubber with capacity 14m³/min as purification process, and flare stack as burning facilities. And monitoring well was set at 30, 50, 70, 90m far from extraction well for the estimation of influence radius. The following experiments were performed using the predeveloped LFG reconvery pilot plant. First, LFG generation amount and generation rate were estemated from the atom analysis of municipal solid waster in S,D landfill. Second, real LFG extraction rate of some 0-10㎥/min was obtanied from operating of LFG recovery process. Third, influence radius was estimated 85-100m according to varying 407㎥/min extraction rate. Fourth, composition of LFG was detected in extraction well and the before and after of purification process.

유온감압법에 의한 슬러지의 탈수에 관한 연구

장성호,박진식,성낙창,김수생 동아대학교 환경문제연구소 1996 硏究報告 Vol.19 No.1

This study was to experiment, through sewage sludge treatment by Vacuum Frying Method, the effects of reaction condition come up to sludge water content. The results are as follows 1) On accassion the sewage sludge treatment by Vacuum Frying Method, the effect of pressure come up to water content, the water content decreased when the same reaction temperature and time was lower pressure more than the normal pressure(760㎜Hg), particularly. Since pressure 280㎜Hg increased water content decrease range. Since pressure(250㎜Hg) the water boiling point down sharply a phenomenon and the lower pressure lowered the water boiling point a phenomenon, the same sewage sludge water content evaporated rapidly the lower pressure more than the normal pressure. Accordingly, a close vacuum(40㎜Hg), showed very lower water content when a short reaction temperature and reaction time. 2) On accassion the sewage sludge treatment by vacuum Frying Method, the effect of reaction time come u to sludge water content, at the same reaction pressure and temperature, relatively the water content at a low reaction temperature(90℃, 120℃) decreased small in case of a long reaction time, the water content at a high reaction temperature(150℃, 180℃) decreased rapidly in case of a short reaction time. 3) On accassion the sewage sludge treatment by Vacuum Frying Method, the effect of come up to sludge water content, at the same reaction time and pressure, increase of reaction temperature decreased rapidly the water content.

유온감압탈수처리한 슬러지의 재이용 가능성에 관한 연구

장성호,김수생 동아대학교 환경문제연구소 1997 硏究報告 Vol.20 No.2

This study was to experiment, through sewage sludge treatment by Vacuum Frying Method, the sludge composition change before and after treatment, the thermal specific character, and the effects of treatment condition come up to sludge water content. The results are as follows. 1. The contents of crude protein and crude fat were respectively 4.8% and 3.4% before treatment, and those were 18.9% and 12.5% after theatment. 2. According to the results of Thermogravimetric analysis, the temperature ranges of themal decomposition were 290-430℃ and 250-380℃ before and after treatment. According to the results of Derivative Thermogravimetric analysis, the temperature of rapidly mass decreas occur respectively 320℃ and 280 C. For the more proper treatment and reuse of organic wastes, the continuous studies of Vacuum Frying Method are more needed.

Polyaaccharide 類의 固形分斯體에 의한 藥物 傳達體系의 開發

서성훈,김길수,김동현,이승진,장미경 경희대학교 약학대학 1994 慶熙藥大論文集 Vol.22 No.

Staphylococcus lugdunensis에 의한 감염성 심내막염 1예

최성호,박현구,변승운,구동회,강호석,장항제,김양수,우준희,김영휘,최상호 대한감염학회 2006 감염과 화학요법 Vol.38 No.5

Staphylococcus lugdunensis is a coagulase-negative staphylococcus (CNS) that is commonly found on the human perineal skin. Contrary to other CNS, S. lugdunensis is a rare contaminant in cultures and has the potential to cause clinically significant infections, including infective endocarditis. Infective endocarditis due to S. lugdunensis have been known to resemble endocarditis due to S. aureus because of its aggressive clinical course and high mortality. We report a case of infective endocarditis caused by S. lugdunensis in a 21-year-old woman. She was cured of the infection with surgical and antibiotic therapy. S. lugdunensis에 의한 감염성 심내막염은 국내에서보고가 없었던 매우 드물지만 다양한 합병증과 높은 사망률을 보이는 감염증이다. 저자들은 S. lugdunensis가 수술적 치료와 항생제 치료로 완치된 감염성 심내막염 1예를 경험하였기에 문헌고찰과 함께 보고하는 바이다.

쓰레기 浸出水의 生分解性 實驗에 관한 硏究

金秀生,成樂昌,朴炫建,張盛晧 동아대학교 환경문제연구소 1992 硏究報告 Vol.15 No.1

A Biodegradability test of Leachate was performed and results of the research are as follows ; 1. The Satisfactory removal efficiencies were impossible in treatment of sample L-1 (leachate only), BOD removal efficiencies with 5.9-11.8 HRTwere 62-69% in sample S-1 and BOD removal efficiencies with 6.2-12.3 HRT were 71-76 % in sample S-2. 2. Metabolism Factor(K_(m)) was calculated to be 0.3/hr in sample L-1, 0.8/hr in sample S-1 and 1.4/hr in sample S-2. 3. Oxygen Requirement of about 1.6-1.7kg O₂/kg BOD_(rm), was required in sample S -1 and that of 1.3-1.4kg O₂/kg·BOD_(rm), was required in sample S-2. 4. Sludge production of Sample S-1 was 0.37-0.51 and that of Sample S-2 was 0.41-0.57kg VSS/kg BOD_(rm).

Fibrous Dysplasia Associated with Primary Hyperparathyroidism Absent of McCune-Albright Syndrome : Tc-99m MIBI and Tc-99m MDP Findings

김승장,석주원,김인주,김영기,김동수 대한핵의학회 2003 핵의학 분자영상 Vol.37 No.2

섬유성 골이형성증은 비정상적인 섬유성 골조직으로 대체되며 느리게 진행하는 골병변이다. 섬유성 골이형성증과 부갑상선기능항진증은 흔하게 관찰되는 질환이나 McCune-Albright 증후군 없이 일차성 부갑상선기능항진증에 동반된 섬유성 골 이형성증은 거의 보고된바가 없다. Tc-99m MDP 골스캔이 섬유성 골이형성증의 진단에 유용하다고 알려져 있으나, Tc-99m MIBI 영상은 아직 보고된 바가 없다. 저자들은 McCune-Albright 증후군이 없이 부갑상선기능항진증에 동반된 섬유성 골 이행성증의 Tc-99m MIBI 스캔과 Tc-99m MDP 골스캔의 영상을 비교하였다. Tc-99m MDP 골스캔상 병변 부위에서 증가된 섭취 소견을 보였으며, Tc-99m MIBI 조기영상에서도 동일한 위치에서 섭취증가가 관찰되었다. 2시간 지연 Tc-99m MIBI 영상에서는 Tc-99m MIBI의 섭취가 배출되는 소견을 보였다. 섬유성 골이형성증 병변에서 Tc-99m MIBI 스캔이 유용할 것이라고 생각하며, 섬유성 골이형성증 병변에서 Tc-99m MIBI의 섭취를 증가시키는 인자에 대한 더 많은 연구가 필요할 것으로 생각한다.

인체 요로상피암에서 angiogenin과 vascular endothelial growth factor의 mRNA발현

전성수,장훈,김원재 충북대학교 의과대학 충북대학교 의학연구소 2003 忠北醫大學術誌 Vol.13 No.2

연구목적: 혈관신생은 종양의 발생과 진행에 중요한 역할을 하며 angiogenin과 vascular endothelial growth factor (VEGF) 등과 같은 여러 인자가 관여한다. 본 연구에서는 방광내 요로상피암 조직에서 angiogenin과 VEGF mRNA 발현을 정량적으로 분석하여 이들 인자가 방광암에 미치는 영향을 조사하였다. 대상 및 방법: 방광암 조직 117예와 정상 방광 조직 17예를 대상으로 angiogenin과 VEGF mRNA 발현을 quantitative competitive polymerase chain reaction (QC-PCR) 방법으로 정량화 하였다. 방광암과 정상 방광 조직, 방광암과 동일 환자의 주변 정상 방광 조직, 종양의 분화도 및 병기에 따른 angiogenin과 VEGF mRNA 발현을 비교 분석하였다. 결과: 대조군의 정상 방광 조직이나 방광암 주변의 정상 방광 조직보다 방광암 조직에서 angiogernin과 VEGF 발현이 유의하게 증가하였다. 병기 Ta 방광암보다 병기 T1 또는 T2 이상의 방광암에서 anigiogenin 발현이 유의하게 증가하였다. 분화도 등급 I인 방광암 보다 등 급 III인 방광암에서 VEGF 발현이 유의하게 증가하였다. 그러나 방광암의 분화도에 바른 angiogernin 발현이나 방광암의 병기에 따른 VEGP 발현에는 유의한 차이가 없었다 결론: 혈관신생 인자인 angiogenin과 VEGF는 방광암의 증식에 관여하며, 특히 방광암 세포가 악성화됨에 따라 VEGF 발현이 증가하고 angiogenin에 의한 혈관신생은 종양의 병기가 Ta에서 T1 이상으로 진행하는데 중요한 역할을 할 것이다. Purpose: Tumor development and progression are angiogenesis-dependent, the Induction of which is mediated by several angiogenic factors including angiogenin and vascular endothelial growth factor (VEGF). This study was performed to evaluate the expression of angiogenin and VEGF in the tumor tissues of patients with urothelial carcinoma. The correlation of these factors with tumor grade and stage was also evaluated. Materials and Methods: The quantification for the expression of angiogenin and VEGF mRNA was assessed in 117 human bladder tumor tissues and 17 normal bladder mucosae using quantitative competitive polymerase chain reaction (QC-PCR). We compared the expression levels of angiogenin and VEGF mRNA between bladder tumor and normal bladder mucosae of controls, between bladder tumor and surrounding normal bladder mucosae, and according to tumor grades and tumor stages. Results: Angiogenin and VEGF mRNA expression in the bladder tumor tissue were significant1y higher than in the normal bladder mucosae of controls or surrounding normal bladder mucosae. Angiogenin expression in bladder tumor with stage T1 or above T2 was significantly higher than in bladder tumor with stage Ta. VEGF expression in bladder tumor with grade III was significantly higher than in bladder tumor with grade I. There was no significant difference in angiogenin expression with regard to the tumor grades and no significant difference in VEGF expression with regard to the tumor stages. Conclusion: These data suggest that angiogenesis mediated by angiogenin and VEGF may be involved in the neoplastic growth of urothelial carcinoma. As the grade of bladder tumor cells worsened, the VEGF expression increased. And, increased angiogenesis mediated by angiogenin seems to play a role in the progression of stage Ta bladder tumor to stage T1 or stage above T2.

폐플라스틱수지와 제지슬럿지의 열분해에 관한 연구

설수덕,왕석주,장성호 동아대학교 환경문제연구소 1994 硏究報告 Vol.17 No.2

The thermal decomposition of the sludge with Poly(acryloniti1e-butadiene-styrene) and Poly(styrene-co-acrylonitrile) were using a thermal analysis techniques in the stream of nitrogen gas of 30ml/min at various heating rates from 4 to 20℃/min. The mathematical, Derivative and Integral method were used to obtained values of activation energy of decomposition reaction. 1. The values of activation energy evaluated by Derivative and Intergral method were consistent with each other very well. 2. The maximum value of heat of decomposition evaluated by DSC method were 10, 120 cal/g at weight ratio of sludge/ABS=20/80 and 10, 500cal/g at weight ratio of sludge/SAN = 20/80. 3. The thermogravimetric trace curve agreed with the theoretical equation.

승모판 혈류의 E파와 폐정맥혈류의 D파의 최대속도 간의 시간 간격과 승모판 도플러 지수들과의 관계

전두수,이만영,박지원,김용주,임효영,강동헌,이길환,김종진,채장성,김재형,홍순조,최규보 대한순환기학회 1999 Korean Circulation Journal Vol.29 No.9