A Coupled-Field Analysis of Galloping for Power Transmission Line

Hwan?Seong KIM,Tuong?Long NGUYEN,Gi?Sig BYUN 제어로봇시스템학회 2002 제어로봇시스템학회 국제학술대회 논문집 Vol.2002 No.10

형질전환 제초제저항성 벼 밀양 204호의 농업적 특성

정응기,이기환,원용재,박향미,전남수,최준호,구연충,한창덕,은무영,김태산,남민희 Plant molecular biology and biotechnology research 2005 Plant molecular biology and biotechnology research Vol.2005 No.

This study was conducted to investigated the major characteristics of genetically modified rice of "Milyang 204" originated from Dongjinbyeo compared to a non-transgenic rice varieties Dongjinbyeo and Junambyeo. Basta resistant transgenic rice lines carrying bar gene produced by the Yeongnam Agricultural Research Institute were evaluated for their agronomic characters. The transgenic Japonica rice of "Milyang 204" showed inferior phenotypic traits compared to a non-transgenic rice variety Dongjinbyeo and Junambyeo. On the basis of UPOV (Union Internationale Pour la Protaection des Obtentions Vegetables) and NSMO(National Seed Management Office) the transgenic "Milyang 204" showed difference in some traits out of some agronomic traits, such as leaf color, angle of flag leaf, number of spikelets, culm length, white core and white belly compared to the nontransgenic varieties rice.

주정폐수의 혐기성 소화처리시와 포기처리시 처리특성에 관한 연구

金煥起,李城白,黃譚勇 全北大學校 附設 都市및環境硏究所 1996 都市 및 環境硏究 Vol.11 No.1

The wastewater of alcohol manufactory plant has very high suspended soild and BOD concentration, acidity, and high temperture. Thus most of the plants drive on anaerobic digestion method of biological treatment because of using a lot of generated methane gas and possible to disinfect pathogenic bacteria in sluge and wastewater. But because of the problem in the concentration of anaerobic treatment water, second treatment is necessary 2-step activated treatment for increasing treatment efficiency. The purpose of this study was performed to know a difference between last 1-step digestion 1-step aeration treatment and 2-step digestion 2-step aeration treatment with retention time in digestion and aerator. The obtained results can be summarized as follows; 1. The concentration characteristic of alchohol production wastewater was analyzed COD 50,000∼80,000㎎/ℓ, BOD 22,000∼41,000㎎/ℓ, SS 20,000∼45,000㎎/ℓ, pH 4.1∼4.2, and 75∼80℃ according to the raw material of alchohol. 2. In case of the anaerobic digestion method of rice-barley wastewater, average COD removal rate of 2-step digestion appeared to 91.9% compared to average COD removal rate 59.3% on 1-step digestion. It is necessary to drive above 20 day of retention time in metane degestor because of increasing organic load causing the decrease of pH and the increase of VFA/COD within aerator. 3. Alcohol wastewater of tapioka is generally much treatment efficiency of 2-step digestion than that of 1-step digestion, but below 2.7㎏-COD/㎥·d of COD bulk load showed the possibility of treatment at 1-step and 2-step digestion method. 4. Amount of gas generation in anaerobic digestion was almost similar at 1-step and 2-step digestion. 5. In the result of aerobic treatment, treatment efficiency of 2-step consecutive aeration was highly about 3% compared to 1-step combined aeration and in the condition of COD 4,000㎎/ℓ, COD load 800㎏ -COD/d, COD volume-load 0.8㎏-COD/㎥·d were difficult two treatment methods both. 6. pH and VFA concentrations are considered as important factors to determine VFA restriction and the harmfulness of fatty acid was seemed to be related to pH. VFA in 1-step digestion appeared strong change with the increase of input wastewater quantity, but 2-step digestion was treated to stable change in output COD 1,230∼2,246㎎/ℓ.

茂朱 南大川 上流水系 汚染이 本流의 水質에 미치는 影響에 關한 硏究

金煥基,崔頭炯,韓雄在 全北大學校 附設 都市및環境硏究所 1996 都市 및 環境硏究 Vol.11 No.1

This study was investigated for the pollution load of water quality in the basin of Wondangchon. Total pollution load was measured that BOD was 683.6 ㎏/day, SS was 1,436.184 ㎏/day, T-N was 237.244 ㎏/day, and T-P was 62.078 ㎏/day respectively inthere. Furthermore, it was estimated that BOD is 1,056.863 ㎏/day, SS is 1,840.657 ㎏/day, T-N is 299,922 ㎏/day, and T-P is 74.154 ㎏/day respectively in 2006 year. In case of BOD loading, that by population accounted for 63% of all BOD loading of that, 57% was discharged in M-4 drainage area. However, since tourists have been increasing gradually, that by population was estimated to be analogous to that by tourists in 2006 year. In case of SS loading, that by livestock was bigger than that by population by holding for 49% of all SS loading, and that by tourists was 9.8% now, however, ratio of that by tourists was estimated to be increased up to 25.8% in 2006 year. In case of T-N loading, that from wastewater treatment plant located in M-1 drainage area was the biggest by accounting for 56.2%. In case of T-P loading, that by livestock discharged form M-4 drainage area accounted for 44.3% of all T-P loading, and ratio of both of that by tourists and that from wastewater treatment plant gradually was estimated to be increased From above results, showing yearly change in pollution load of each water quality items is estimated to be increased continuously in every items, and in the influence of the pollution load of each drainage area upon Muju Namdaechon, M-4 drainage area was the biggest by accounting for 45% of total pollution load, and nest was ordered to M-1, M-2, M-3 and polltion load from wastewater treatment plant. The water quality of Namdaechon in Muju influenced by the study area was in the result of BOD 17.7%, SS 13.0%, T-N 28.2% and T-P 22.9%.

펜턴試藥을 이용한 廢水處理 슬러지의 脫水特性에 關한 硏究

金煥起,朴相肅,劉永壽 全北大學校 1997 論文集 Vol.37 No.-

This study was carried out to improve the dewatering characteristics of wastewater treatment sludge using Fenton's Reagent. The Fenton's Reagent consisting of FeSO_4 and H_2O_2 has powerful oxidizing ability and reactivity. According to the experimental results, primary dosage of FeSO_4 was more effective than secondary in the wastewater treatment sludge and the reagent was almost completed at about 20 minutes contact time with the wastewater sludge. The dosage ratio of FeSO_4:H_2O_2=1mole : 1.6mole was the highest dewatering efficiency. The specific resistance of Fenton's Reagent, 7.335×l0 exp (10)m/㎏, was much lower than these studied as 2.88×10 exp(14)m/㎏ of activated sludge and 1.05×10 exp(12)m/㎏ of conditioned digested sludge. Therefore, the Fenton's Reagent oxidized organics in and then improved dewatering of the wastewater treatment sludge.

악골결손 재건을 위한 탈회 및 비탈회 동결건조 동종골의 이용

이기혁,박인순,김영균,김수관,엄인웅,여환호,이병준 大韓顎顔面成形再建外科學會 1996 Maxillofacial Plastic Reconstructive Surgery Vol.18 No.3

Bone graft has been used to repair one defect caused by disease and trauma, congenital and acquired deformities. Graft materials are autogenous bone, allogenic bone, xenogenic bone, synthetics. Autogenous bone graft is the most superior to other materials for immunologic reaction, compatibility to host tissue, and revascularization. However, autogenous bone graft is required for additional operation and the amount of taking is limited. Autografts are obtained at own expense and also limited in size, shape. In order to compensate these problems, allogenic bone graft has been used increasingly. But allogenic bone graft encounters immunologic complications. Therefore, it has been used after freezing, lyophilization, or demineralization. Allogenic bone processed by only lyophilization includes potential antigenic properties on its surface, therefore it is demineralized to deplete immunologic reaction. Demineralized bone releases BMP and helps the mesenchymal cells transform to the chondroblast to produce cartilage and bone. This reaction is called osteoinducation. Many authors have reported that mineralized lyophilized bone had less antigenicity clinically and favorable bony consideration with host bone. In our department from 1995 to now, we have used banked allogenic bone graft that has been prepared from Wonkwang Bone Bank in 5 cases and mineralized lyophilized bone graft in 2 cases to reconstruct the maxillofacial bone defect after tumor resection and cyst enucleation and cleft alveolus. We will report with literature review that the result is favorable functionally and esthetically.

도로주변 낙하분진의 침착속도와 수계환경에 미치는 영향

김환기,송호면,김형훈 全北大學校 附設 都市및環境硏究所 1997 都市 및 環境硏究 Vol.12 No.1

The air pollutants were transported over the long distant by the wind and were deposited to the ground or water surface by the gravitational sedimentation, precipitaion or Brown movement and so on. In this case, the deposited particles might give a bad effect to the water environment, such as eutrophication, damage of aquatic organism. This study was carried out to compare the deposition flux to the 17th national road and Il-San lake, Kyunggi, and to investigate the principal organic components. The deposition flux of 17th national road was 228.2㎎/㎡ day from Feb. to June., and that of Il-San lake was 276.4㎎/㎡ day from Feb., to June. Each components exist in the ratio of COD : T-N : T-P = 100 : 10.8 : 0.9, and the ratio of COD to the VSS is 1.2. The ratio of VSS to TSS was 0.12, the ratio of NH_3-N to T-N was 0.48 and the ratio of PO_4-P to T-P was 0.25. The average deposition velocity was 4.2㎝/s in 17th national road and 4.9 ㎝/s in the Il-San lake. The minimum velocity site was forest at the rate of 1.0㎝/s.

정맥패턴을 이용한 개인 식별 알고리즘 및 시스템

최환수,박기태 명지대학교 대학원 1997 대학원논문집 Vol.1 No.-

This paper presents algorithm and system for biometric person identification utilizing vein pattern. In order to represent hand vein images, we utilized template matching. We implemented the algorithm with DSP(ADSP-21061). This paper presents the detailed algorithm, system and performance evaluation results.

高敞地域 農業用水源의 水質特性에 關한 硏究

金煥起,姜鎭錫,全鍾南 全北大學校 附設 都市및環境硏究所 1992 都市 및 環境硏究 Vol.7 No.-

This paper had study on the water quality characteristics and water quality management of water sources as agricultural water in Gochang. This study included the measurement of stream water quality, water quality of reservoir and water quality of groundwater, this investigation was tried to find out water quality standard of agricultural water into each sources. Results from water quality analysis, the water quality of stream in Gochang was measure that pH was 8.5-7.0, COD was 14.8-1.6㎎/ℓ, SS was 282.8-1.2㎎/ℓ, T-P was 2.64-0.17㎎/ℓ, T-P was 0.22-0.01㎎/ℓ, electric conductivity was 220-50㎲/㎝ and Cd, Pb, Cu was below 0.01㎎/ℓ. The water quality of reservoir in Gochang was measure that pH was 7.0-8.0, COD was 8.0-2.6㎎/ℓ, SS was 126.1-3.4㎎/ℓ, T-P was 1.13-0.456㎎/ℓ, T-P was 0.16-0.05㎎/ℓ, electric conductivity was 200-130㎲/㎝. The water quality of ground water in Gochang was measure that pH was 6.0-8.4, TS was 51.8-419.8㎎/ℓ, COD was 2.4-1.0㎎/ℓ, CO_3^- was 125.8-14.5㎎/ℓ, SO_4 was 0.46-48.3㎎/ℓ, Cl^- was 134.1-3.6㎎/ℓ, T-N was high 15㎎/ℓ Therefore, stream water and reservoir water in Gochang had adequate to agricultural water quality standard. The ground water had adequate to agricultural water quality standard in deep well and low well.

대기오염에 미치는 공중낙하 세균의 영향

노기환,남현근 광주보건대학 1983 論文集 Vol.8 No.-

The influence of air-born microbes on air pollution, in Gwangju area was tested, from October 3, 1982 to November 2, 1982 for one month period at six different position. The results obtained are follows; 1. The number of Air-Born Microbes in rainy day at the Inside and Outside were 192.55 and 44.17 respectively. The number of Air-Born Microbes in clear day were 531.18 (Inside) and 148.33 (Outside). 2. At the Inside of terminals and underways, the average number of Air-Born Microbes were 316.7 and 577.6 respectively. The average number of Air-Born Microbes at the Outside of terminals and underways were 103.28 and 141.25 respectively. 3. The number of Air-Born Microbes at six different positions per time such as Public Bus Terminal, Deain Underway, Choong Keum Underway, Highway Line Bus Terminals (Gwangju and Chungang) and Railway Station were 678.4, 673.08, 380. 13, 154.26 and 170.93 respectively. 4. The number of Air-Born Microbes at all the positions per time at A.M. (8, 10, 12) P.M. (2, 4, 6, 8, 10) were 349.58, 372.48, 384.93, 386.1, 397.87, 404.47, 412.67, and 373.3 respectively. 5. It was investigated that there were Coccus (727.3), Bacillus (390.5) Spirillum (120.5) and others(81.2) in the Inside of Deain Underway at clear day.