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Jin Ho Boo,Eunseok Kim,Byung Chan Kwon,Myung Jo Seo,Ji Man Kim,Ji Bong Joo,Dohyung Kang,No-Kuk Park 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.123 No.-
This study investigated the catalytic activity of vanadium-manganese supported on USY-zeolite as a catalystfor low-temperature NO removal, and embedded the powder catalyst in PTFE filter of bag filter. TheV2O5-MnO2/USY-zeolite catalyst was prepared using the co-impregnation method, and the V2O5/MnO2ratio was 0/10, 2.5/7.5, 5/5, 7.5/2.5, or 10/0. The catalytic activity test for NH3-SCR(selective catalyticreduction) of NO was performed at 150–230 C. An enhanced NO conversion above 60% was exhibitedin the low-temperature region below 230 C, and the NO removal efficiency increased as the MnO2 contentincreased. The NH3-TPD and NO-TPD(Temperature Programmed Desorption) analysis confirmed thatthe NH3 adsorption of the catalyst more significantly influences the NO removal performance than the NOadsorption. As the MnO2 content on the catalysts increased, the strength and amount of adsorbed NH3increased, resulting in enhanced NO conversion. The catalyst-embedded PTFE (polytetrafluoroethylene)fiber was prepared by extruding physically mixed PTFE and catalyst powder. Scanning electron microscopy/energy dispersive X-ray spectroscopy confirmed that the catalyst was well dispersed on the surfaceand inside the PTFE fiber. The NO removal performance of the catalyst included PTFE fiber increased asthe amount of the catalysts added was increased.
119구급차로 이송된 환자의 병원 전 전문응급처치에 관한 조사
박진옥,이경희,노상균,최청숙 한국응급구조학회 2003 한국응급구조학회지 Vol.7 No.1
An analysis was performed to evaluate the prehospital advanced emergency care in Emergency Medical Service system(EMS) through the review of the 119 transport records of 190 patients who visited to Jecheon Seoul hospital emergency center at Chungpuk Jecheon via 119 system during the period from October 2002 to September 2003. The results were obtained as follows: 1. Among 190 patients, male were 127(66.8%) and female were 63(33.2%) and non-traumatic patients were 81(42.6%) and traumatic patients were 109(57.4%). 2. The analysis of prehospital care by Emergency Medical Technician(EMT) revealed that Airway maintenance and keeping oral airway(37.7%), oxygen supply(75.9%), Tourniquett or MAST(18.9%), Immobilization of neck or spine(94.7%), Immobilization of extremities(51.4%), wound bandage and dressing(25.0%), BCLS(12.1%) and Application of AED(2 patients). 3. The analysis of prehospital care by EMT revealed prehospital care was limited to keep of intubation or LMA, medication and IV insertion, insertion of gastric tube and ACLS. 4. There was no case of the notification to medical institute or consultation to doctor.
박노국,이종욱,이승철,이종대,류시옥,이태진 영남대학교 공업기술연구소 2000 工業技術硏究所論文集 Vol.28 No.2
The zinc titanate sorbents(ZTG40) were prepared and the tests for durability and attrition resistance were carried out to develop the highly effective desulfurization sorbents. In the attrition tests for ZTG40 the results showed that the attrition resistance was 94.08% and that the sulfur capacity was maintained above 15g S/100g sorbent throughout the 100-cycle test, its maximum being 23.05g S/100g sorbent. As compared to sorbents developed by the developed countries, ZTG40 showed superior performances. In the advanced countries 15g S/100g sorbent is a yardstick of excellency for the sulfur capacity of desulfurization sorbents. Therefore, ZTG40 developed in this study has the desirable physical and chemical properties for fluidized desulfurization of coal gases.
CO/CO_2혼합 gas를 이용한 산화텅스텐(WO_3) 환원-탄화 반응에 관한 연구
박영효,이종대,박노국,이태진 嶺南大學校 工業技術硏究所 2003 工業技術硏究所論文集 Vol.31 No.1
The reduction-carburization of tungsten oxide(WO_3) with CO/CO_2 mixtures was studied. The reduction rate was increased with the concentration of CO. The final products at 1100℃ were WC(CO concentration: 90∼100 vol%), W (CO concentration: 85 vol%) and WO_2 (C0 concentration: 70 vol%). For the CO concentration of 100 vol%, the general reaction routes were WO_3 → W_20O_58 → W_18O_49 → WC (reaction temperature: 600℃), WO_3 → W_20O_58 → W_18O_49 → WO_2 → WC (reaction temperature: 600∼800℃) and WO_3 → W_20O_58 → W_18O_49 → WO_2 → W → WC (reaction temperature: +900℃).
고온에서 황화수소 제거를 위한 Fe₂O₃탈황제의 반응성
박노국,김장희,이태진 嶺南大學校 環境問題硏究所 1994 環境硏究 Vol.14 No.1
석탄가스화의 고온건식탈황제 개발을 목적으로 철계 탈황제를 선정하여 Fe₂O₃의 함량을 61.8%, 30.0% 그리고 10.0%로 변화시킨 3종류의 탈황제에 대하여 탈황 및 재생반응을 조사하였다. 먼저 H₂S의 제거효율이 가장 최적인 반응온도를 찾기 위하여 출구에서의 농도변화를 GC-TCD로 분석하였으며, SEM 사진 분석결과 최적의 H₂S 제거효율을 나타내는 온도는 500℃로 나타났다. 탈황-재생반응을 반복적으로 수행하였으며, 황화반응은 H₂S와 (H₂+ CO + CO₂+ N₂)의 혼합가스를 사용하여 500℃에서, 재생반응은 O₂-N₂의 혼합가스로 800℃에서 각각 수행하였다. Fresh한 탈황제, 황화반응 및 재생반응 후의 탈황제 SEM사진과 XRD 특성도 비교 조사하였다. 그리고 반응기 출구에서 H₂S 농도의 파과곡선으로부터 탈황제의 성능을 비교하였다. Several Fe₂O₃sorbents were investigated as regenerable sorbents for the removal of H₂S at high temperature. To find optimal temperature of the reaction between H₂S gas and Fe₂O₃sorbent, the effluent gas from a fixed-bed reactor was analysed by GC-TCD. The experimental results showed that H₂S removal efficiency of sorbent was optimum at 500℃ and SEM data were in accordance with this feature. The sorbents were subjected to successive sulfidation-regeneration cycles. Sulfidation was carried out at 500℃ with H₂S-(H₂+CO+CO+N₂)mixtures, regeneration with O₂-N₂mixtures. Fresh, sulfided, and regenerated sorbents were characterized by SEM and XRD. Breakthrough exit concentration of H₂S is discussed in term of physical structure of the sorbents.
박노국,유성구,서길수,이태진 영남대학교 공업기술연구소 2000 工業技術硏究所論文集 Vol.28 No.2
The sulfidation reaction of calcium carbonate to remove H2S were investigated. Expecially, the effect of polymorphs of calcium carbonate and reaction temperature on the sulfur capture were determined. It was found that calcination reaction of calcium carbonate were influenced by polymorphs of calcium carbonate. The calcination temperatures of aragonite were lower than those of other calcium carbonates. For the sulfidation of calcite with H2S, the effect of reaction temperature on the sulfur capture were not found. But in caes of vaterite and aragonite, the reaction temperature were found to have a significant effect on the sulfidation reaction. From in these results, optimum temperatures of sulfidation reaction using vaterite and aragonite were determined at 800∼850℃ and 750℃, respectively.
여자중학교 체육수업에 스포츠댄스도입이 학생의 심폐지구력 향상에 미치는 영향
김진홍,박노용 창원대학교 체육과학연구소 2001 경남 체육연구 Vol.6 No.2
학교체육수업 효율성의 극대화와 적극적인 체육수업의 필요성이 강조되는 시점에서 청소년의 신체적 성장과 정신적 성숙에 스포츠댄스란 새로운 스포츠종목의 도입과 시행은 청소년의 정서 순화를 위한 놀이문화의 부재를 해결하고 올바른 신체의 성장에 도움이 될 것이다. 본 연구는 스포츠댄스(Cha Cha Cha, Jive 등)를 14세 이상 중학교 여학생에게 시범적으로 3개월 간 지도하여 교육과정에 따른 정규체육수업에 참여한 여학생과 신체적인 운동능력을 비교하였다. 본 연구에 참여한 학생 총 20명을 스포츠댄스그룹, 비교그룹으로 각각 10명씩 나누었으며, 연령은 두 그룹 모두 14세 이상으로 중학교 3학년 여학생이었다. 스포츠댄싱수업은 체육시간을 통해 이루어졌고, 3개월 동안 실시한 후 자전거 에르고메터를 이용하여 운동부하검진을 실시하였다. 여기에 사용된 운동부하 검진의 기기는 네덜란드산 Lode 자전거에르고 미터와, 독일산 Alpha Oxycon이 이용되었다. 심장의 운동부하능력과 최대산소섭취능력 그리고 산소와 이산화탄소의 교환능력은 매 운동부하 단계마다 관찰하였으며, 특히 운동시 4분과 최대운동시(max), 그리고 운동 부하 후 회복기 1분과 5분 후에 스포츠댄스그룹과 체육수업에 참여한 그룹간 비교를 하였다. 연구의 결과로는 스포츠댄스수업에 참여한 학생이 정규 체육수업에 참여한 학생들보다 심장의 운동부하능력(HR/min), 최대 산소의 섭취능력(VO2max.), 그리고 산소와 이산화탄소의 교환 능력인 RQ(CO2/O2) 등의 심페운동능력에서 대부분 우수한 결과가 나타났다.