넙치, Paralichthys olivaceus의 수온 자극 스트레스에 대한 사료첨가제 투여 효과

권문경,박상언,방종득,조병열,이상민,박수일 한국어병학회 2003 한국어병학회지 Vol.16 No.3

본 연구는 넙치의 수온 스트레스에 대한 사료첨가제 (미역 5%, 미역 10%, 어보산 0.5%, 고추냉이 잎 2%, 고추냉이 줄기 2%)의 영향을 혈액학적, 면역학적 측면과 Edwardsiella tanda를 사용하여 질병에 대한 저항성으로서 평가하였다. 혈장의 글루코즈와 콜티졸 농도는 1차 수온 변동 후 대조구에 비하여 미역 5%와 고추냉이잎 2% 첨가구에서 유의적으로 낮게 나타났다(P〈0.05). 1차 수온 변동 후 혈장 라이소자임 활성과 E. tarda의 공격 시험 후 생존율은 미역 5%첨가구에서 대조구에 비하여 유의적으로 높게 나타났다(P〈0.05). 본 실험 결과 미역 5% 첨가 사료 투여는 넙치의 스트레스 상태에서 질병 감염에 대한 저항성을 높일 수 있을 것으로 사료된다. The effect of each dietary supplements (Undaria 5%, Undaria l0%, Obosan 0.5%, Wasabi leaf 2%, Wasabi stem 2%) on the water temperature fluctuation in juvenile olive flounder (Puralichthys olivaceus) was investigated. The response to stress was assessed in terms of effects on haematological and immunological, and resistance against Edwurdsiella tarda infection. Plasma glucose and cortisol levels were significantly lower in 5% undaria and 2% wasabi leaf supplement groups than the controls after the first change of water temperature (P<0.05). The plasma lysozyme activities and the survival rates from E. tarda infection were significantly higher in the 5% undaria supplement groups than the control (P<0.05). These results suggest that the 5% undaria supplement seems to be contributable to the increased disease resistance on olive flounder.

디젤오염 지하수 정화를 위한 공기주입정화법 칼럼 실험

장순웅,이시진,송정훈,권수열 한국환경과학회 2004 한국환경과학회지 Vol.13 No.12

Bio sparging experiments were conducted in a laboratory column to investigate the potential removal of diesel contaminated groundwater. The objectives in this study were (a) to determine the extent of diesel degradation in laboratory columns under supplement of nutrient; (b) to determine the effect of variation of air flow in the removal of diesel and (c) to evaluate the potential enhancement of diesel degradation as a function of temperature. Our results showed that the nutrient supplement and higher air flow greatly enhanced diesel degradation. However, the variation of water temperature examined slightly increased degradation rate of diesel fuel.

포스터발표 : 하,폐수처리 ; 금속매질을 이용한 고농도 염소계지방족 탄화수소 혼합물 처리시 제거 특성

권수열 ( Soo Youl Kwon ),손봉한 ( Bong Han Son ),윤준기 ( Jun Ki Yun ),이채영 ( Chae Young Lee ),김영 ( Young Kim ),김남희 ( Nam Hee Kim ),홍광표 ( Kwang Pyo Hong ) 대한상하수도학회 2006 공동춘계 학술발표회 논문집 Vol.2006 No.-

Biogenic TiO2 나노입자 전처리가 클로로포름 광분해에 미치는 영향

권수열 ( Soo Youl Kwon ),김영 ( Young Kim ),( Greg Roorrer ),( Lewis Semprini ) 한국물환경학회 2011 한국물환경학회지 Vol.27 No.1

Photocatalysis using UV light and catalysts is an attractive low temperature and non-energy-intensive method for remediation of a wide range of chemical contaminants like chloroform (CF). Recently development of environmental friendly and sustainable catalytic systems is needed before such catalysts can be routinely applied to large-scale remediation or drinking water treatment. Titanium dioxide is a candidate material, since it is stable, highly reactive, and inexpensive. Diatoms are photosynthetic, single-celled algae that make a microscale silica shell with nano scale features. These diatoms have an ability to biologically fabricate TiO2 nanoparticles into this shell in a process that parallels nanoscale silica mineralization. We cultivated diatoms, metabolically deposited titanium into the shell by using a two-stage photobioreactor and used this biogenic TiO2 to this study. In this study we evaluated how effectively biogenic TiO2 nanoparticles transform CF compared with chemically-synthesized TiO2 nanoparticlesthe and effect of pretreatment of diatom-produced TiO2 nanoparticles on photocatalytic transformation of CF. The rate of CF transformation by diatom-TiO2 particles is a factor of 3 slower than chemically-synthesized one and chloride ion production was also co-related with CF transformation, and 79~91% of CF mineralization was observed in two TiO2 particles. And the period of sonication and mass transfer due to particle size, evaluated by difference of oxygen tention does not affect on the CF transformation. Based on the XRD analysis we conclude that slower CF transformation by diatom-TiO2 might be due to incomplete annealing to the anatase form.

금속매질을 이용한 고농도 염소계지방족 탄화수소 혼합물 처리시 제거 특성

권수열 ( Soo Youl Kwon ),손봉한 ( Bong Han Son ),윤준기 ( Jun Ki Yun ),이채영 ( Chae Young Lee ),김영 ( Young Kim ),김남희 ( Nam Hee Kim ),홍광표 ( Kwang Pyo Hong ) 한국물환경학회 2006 한국물환경학회·대한상하수도학회 공동 춘계학술발표회 Vol.2006 No.-

Effect of Pair-Mineralizer on the Reaction of Alite and Calcium Langbeinite Formation

Kwon, Woo Teck,Kim, Young Phil,Kim, Y.,Kim, Soo Ryong,Bae, Seong Youl Trans Tech Publications, Ltd. 2006 Materials science forum Vol.510 No.-

<P>This paper investigates the effect of the pair-minerializer (CaSO4,-CaF2) on the reaction of alite, belite and calcium langbeinite formation with different alkali and sulfate contents. A set of clinker samples was prepared by adding laboratory grade reagents of (NH4)2SO4, CaF2 and K2CO3 to the cement raw mixes. The mineralogical composition of clinker was analyzed by X-ray powder diffraction, and the quantity of minerals was evaluated by using TOPAS software. As the experimental results, the total amount of calcium silicate minerals was rapidly increased with the addition of F and SO3 components simultaneously as pair-mineralizer with K2O more than the value which mineralizer was added separately. Also, in the case of adding K2O only to the raw mixes, the amount of alite is decreased after clinkering. However, if alkali (K2O) and pair-minerializer (CaSO4,-CaF2) were added simultaneously, the quantity of alite and calcium langbeinite mineral increased because of the formation of stable clinker minerals by the reaction of alkali (K2O) and sulfate.</P>

부정교합의 유형에 따른 두개저와 하악골의 형태에 관한 연구

權奇烈,鄭圭林,李起受 대한치과교정학회 1986 대한치과교정학회지 Vol.16 No.1

This study was designed to investigate the variation of mandibular pattern and cranial base and their association in the cranioofacial malocclusion. The material was the 165 cephalometric radiographs taken from craniofacial malocclusion. The sample was devided into two groups by age child group aged from 10 to 13 years and adult group aged over 18 years, and each group was devided into 3 types of malocclusion; classⅠ, ClassⅡ div. 1 and ClassⅢ malocclusion. Child group consist of 35 sample and adult group consist of 20 samples in each malocclusion type. Various angular and linear measurements on the cephalometric radiographs were recorded and statistically analyzed. The results of the study were as follows; 1. The cranial base angle was largest in ClassⅡ div. 1 malocclusion and smallest in ClassⅢ malocclusion. 2. The anterior cranial base length was largest in ClassⅡ div. 1 malocclusion but posterior cranial base length did not show statistical difference. 3. The mandibular body length of ClassⅢ malocclusion was larger than those of ClassⅠ and ClassⅡ div. 1 malocclusion in the adult group but did not shown difference in the child group. The ramus height of ClassⅢ malocclusion was larger than those of ClassⅠ and ClassⅡ div. 1 malocclusion in the child and adult group, but there were no difference between ClassⅠ and ClassⅡ div. 1 malocclusion. 4. The mandibular position was showed low correlation with the cranial base angele.

Characterization of Automobile Shredder Residues for Chlorine Content and Estimation of it’s Circulation in Cement Kiln

Kwon, Woo Teck,Kim, Soo Ryong,Kim, Y.,Hwang, Jong Hee,Dabhade, Vikram V.,Yoo, Tae Wook,Bae, Seong Youl Scientific.Net 2007 Materials Science Forum Vol.544-545 No.-

<P>The possible utilization of automobile shredder residue as a fuel in the cement kiln process was investigated. The detailed characteristics of the automobile shredder residues were investigated in terms of it’s chlorine content as a fuel feed and its circulation in cement kiln. For estimation of the chlorine content in the cement kiln system, the Weber model which is one of the circulation material’s forecast model was used. From the results, we estimated the chlorine by-pass rate should be 1 ~ 2 percent, for maintaining the present level of chlorine content’s on the hot-meal of the cement kiln system.</P>

중·소형 소각로의 대기 배출 허용 기준과 방지 기술의 효율에 관한 연구

권태원,배성렬,공성호,김용수 한양대학교 에너지·환경기술연구소 1999 에너지·環境技術論文集 Vol.5 No.-

본 연구는 기설치되어 가동되고 있는 소형소각로 4기와 중형소각로 4기등 총 8기를 임의 선정하여 투입폐기물 소각시 대기중으로 배출되는 오염물질의 농도, 배출허용기준과 방지시설효율을 파악코자 97년 1월부터 97년 12월까지 1연에 걸쳐 STACK SAMPLER 및 GAS SAMPLER등으로 측정 분석하였다. 연구결과 中·소형 소각로의 측정농도는 모두 대기배출허용기준 이하로 양호한 상태였으나, 방지시설의 효율은 각 성능에 비하여 최적의 상태는 아닌 것으로 나타났다. 또한 현장조사로 나타난 문제점은 소형소각로의 경우 투입 폐기물이 가스상 오염물질을 발생하는 폐기물을 소각하는 경우도 있었으나, 가스상 오염물질을 저감할 수 있는 방지시설을 대부분 설치하지 않았으며, 따라서 주변환경오염 및 소각로 자체의 부식 등이 우려되었다. 소형소각로를 설치한 4개업소의 분석결과는 먼지 28.5∼88.5mg/S㎥, CO 85.8∼290.9ppm, SOx 불검출∼18.2ppm, NOx 10.05∼22.4ppm, HCl 1.66∼28.5ppm로 나타나 배출 허용기준을 초과하지 않는 양호한 상태를 보였고, 100㎏/hr이상의 중형소각로를 설치한 4개 업소의 분석결과도 먼지 27.7∼77.55mg/S㎥, CO 109.3∼346.2ppm, SOx 30∼41ppm, NOx 11.1∼41.5ppm, HCl 4.0∼12.4ppm로 나타나 배출허용기준을 초과하지 않는 양호한 상태를 보였다. 중·소형 소각로의 최저치와 최고치에 따른 농도비교를 한 결과 CO, SOx, NOx 등 가스유의 농도는 소형보다 중형에서 다소 높은 상태를 보이고 있었으며, HCl과 먼지는 소형보다 중형에서 다소 저감된 상태를 보이고 있어, 이를 통하여 볼 때 가스유를 저감하기위해 설치된 중형소각로에서의 효율은 HCl에서 저감효과를 나타낼뿐 CO, SOx, NOx 가스는 별다른 저감효과를 보이지 않는 것으로 분석되었다. 먼지의 경우 방지시설 효율면에서 볼 때 소형보다는 방지시설이 1,2,3차로 설계된 중형에서 그 저감폭이 높게 나타났다. 반면 CO의 경우 폐기물 투입량이 많은 중형소각로에서 농도가 더 높게 나왔으며, 중·소형 모두 방지시설 효율과는 무관하였다. In this research four of small incinerator, four of middle incinerator were chosen to investigate concentration of gas which was eminated and pollution control facilities from Janury to December, 1997, with Stack Sampler and Gas Sampler. Both of incinerator were operated below the Permissible Discharge Standards. But efficiency of Pollution Control Facilities were not in best condition. The problems which were found during the field test were these small incinerator usually don't have control facilities of polluted gas even though they incinerate solid wastes which contain gaseous pollution substances. So it will cause the corruption of incinerator itself and contaminate around of it. Small incinerators (capacity below 100kg/hr) just had cyclone(efficiency 50^) and middle incinerators(capacity above 100kg/hr) usually had three steps facility(Cyclone-Semo-dry/dry Scrubber-Bag Filter/E·P). The analysis result of four companys which use small incinerator was Dust 28.5∼88.5mg/S㎥, CO 85.5∼290.9ppm, SOx 0∼18.2ppm, NOx 10.05∼22.4ppm, HCl 1.66∼28.5ppm. These analysis result of four company which use middle incinerator was Dust 27.7∼77.55mg/S㎥, CO 109.3∼346.2ppm, SOx 30∼41ppm, NOx 11.1∼41.5ppm, HCl 4.0∼12.4ppm. Also these data were all below the Permissible Discharge Standards So all small-middle incinerator were operated adequately. Compare small incinerators with middle incinerators, concentration of CO, SOx, NOx was lower than that of middle incinerators but HCl, Dust was higher than that of middle incinerator. It means facilities which were established in middle incinerator to reduce gas just work in HCl, but not in CO, SOx, NOx. In case of Dust middle incinerator's decrease efficiency was better than small incinerator but CO's decrease efficiency was worse than small incinerator. Both of incinerators were not concern with efficiency of Pollution Control Facilities. The analysis result of middle incinerator-6 which use Cyclone, Scrubber, Bag Filter and incinerator-8 which use Cyclone, Scrubber, E·P during one year by month show that the concentration of Dust, SOx, NOx was stable. So it's easy to get Permissible Discharge Standard but concentration of CO was changeable. In case of efficiency of Pollution Control Facilities, middle incinerator-8 which use Cyclone, Scrubber, E·P was better than middle incinerator-6 which use Cyclone, Scrubber, Bag Filter. Middle incinerator-8's NOx concentration was 121.7ppm in October, it seems control condition was changed. So it need the countermeasure of rational control and management.

Kinetics of Chemical Changes in Phenol Formaldehyde Based Polymeric Films Etched in N₂O and O₂Inductively Coupled Plasmas: A Comparative Study

Kwon, Kwang-Ho,Min, Nam-Ki,Kang, Seung-Youl,Baek, Kyu-Ha,Suh, Kyung Soo,Shutov, Dmitriy Alexandrovich IOP Publishing 2009 Japanese journal of applied physics Vol.48 No.8