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비디오를 통한 심박동수 측정기반 실시간 얼굴색 변화 시각화 시스템
김종모(Jong-Mo Kim),김창익(Changick Kim) 대한전자공학회 2015 대한전자공학회 학술대회 Vol.2015 No.11
Human heart rate (HR) is an important factor indicating health status. Traditionally, HR was measured by contact-based devices. Recently, remote measurement of HR via camera has drawn attention to the image processing community due to the benefits it provides. However, indicating only measured heart rate is not user friendly. In this paper, we propose a method to display facial color change according to measured heart rate. One of the most important task for achieving this goal is to produce a amplifying signal with continuity and smoothness. We also build a Graphical user interface (GUI) to build a user-friendly system. We demonstrated that our method deals with real-time.
김종모 ( Jong-mo Kim ),정병길 ( Byung-gil Jung ) 한국환경기술학회 2022 한국환경기술학회지 Vol.23 No.4
The grease contained in the food wastewater is not easily decomposed at a short residence time and may cause scum by combining with the solids in the food wastewater. Therefore, it is necessary to effectively remove the grease in order to efficiently treat the food wastewater and solve the operational problems in the anaerobic digester. The purpose of this research was to compare the grease effects for biogas production before and after grease removals in food wastewater using by two-phase anaerobic digestion process. After removing the grease in the food wastewater, the anaerobic digester could be operated stably, and the biogas production was also high. Biosorp and ferric chloride had an excellent effect on removing hydrogen sulfide (H<sub>2</sub>S) in the digester. Considering economic feasibility and convenience, ferric chloride is judged to be more suitable for hydrogen sulfide removal than Biosorp.
석회와 유기물이 산성 산림토양의 Al과 Pb 불용화에 미치는 영향
김록영 ( Rog-young Kim ),윤정기 ( Jeong-ki Yoon ),김지인 ( Ji In Kim ),박경훈 ( Gyoung-hun Park ),윤성미 ( Sung Mi Yun ),김종모 ( Jong Mo Kim ),알렉산더쉐닝 ( Alexander Schoening ),김태승 ( Tae-seung Kim ) 한국환경농학회 2016 한국환경농학회 학술대회집 Vol.2016 No.-
The toxic effects of Al and Pb on trees, earthworms, and microorganisms in acidic forest soils are well known. As a remedial measure the surfaces of forest soils worldwide have been limed. Depending on the thickness of the organic layer on the forest soils the applied lime leaches with a delay of several years into deeper layers of the mineral soil. Furthermore, the lime applied is often neutralized in the organic layer even before it reaches mineral soil horizons. Therefore, this study was conducted to investigate the effect of liming on soil pH and immobilization of Al and Pbin acidic forest soils aftermixing the lime with the mineral soil. The dolomitelime together with the organic layeron the forest soils was strip wise mixed with the soil material to a depth of 35 cm. The investigation took place 8 months after the treatment. Soil treatment led to significant increases of the pH in the upper 35 cm of the soil. The soil of the untreated control strip was highly acidic with pH(CaCl2)of 3.4-3.7, whereas pH(CaCl2) in the treated strips were between 4.0 and 5.1. The total contents of Al and Pbin soils did not differ from the treated strip to the untreated strip. However, the mobile fractions of Al and Pb were significantly reduced from an average of 362 to 69.3 mg kg-1 for Al and 2.9 to 0.7 mg kg-1 for Pb. This improvedinitial soil conditions will probably lead to an advanced growingfor the planted trees.
하수슬러지 및 음식물류 폐기물의 혐기성소화 시 염화철 투입에 의한 Biogas 발생량 변화 및 안정화에 관한 연구
김대용 ( Dae-yong Kim ),김종모 ( Jong-mo Kim ),김정권 ( Jung-kwon Kim ) 한국환경기술학회 2012 한국환경기술학회지 Vol.13 No.3
본 연구는 음식물류 폐기물의 재활용 방안으로 음식물류 폐기물의 건식 단상 혐기성소화 공법으로 처리시 혐기성 소화조 내에 FeCl<sub>2</sub>, 하수슬러지를 추가로 주입하여 혐기성 소화시 안정적이며 효율적인 음식물류 폐기물의 처리방안을 제시하고, 양질의 Biogas를 생산시킬 수 있는 운전조건을 제시하는데 그 목적이 있다. 유효용량 10 L의 반응조를 이용하여 음식물류 폐기물의 건식 단상 혐기성 소화를 실시한 결과 음식물류 폐기물만을 이용한 혐기성 소화보다 하수슬러지를 추가한 조건에서 높은 Biogas 발생률을 나타내었다. 또한 CH<sub>4</sub> 생성률의 경우 음식물류 폐기물의 단독 투입보다는 하수슬러지를 혼합하여 투입하였을 경우 더 높은 CH<sub>4</sub> 생산을 기대할 수 있게 되었다. H<sub>2</sub>S농도의 경우 FeCl<sub>2</sub>이 투입되지 않은 RN1 A 조건을 제외한 반응기내에서 300 ppm 이하로 유지되어 H<sub>2</sub>S의 혐기성 소화의 독성작용을 억제해준 것으로 판단되며, NH<sub>4</sub>-N의 경우 하수슬러지를 같이 투입해준 결과 혐기성 소화 효율이 상승되었다. 또한 첨가물의 병합처리에 의해 안정된 VFA와 pH 조절 효과도 나타났다. 연구결과 혐기성 소화효율이 좋아 질수록 Biogas 발생량, CH<sub>4</sub> 농도, 소화슬러지 pH는 증가하였으며, VFA, NH<sub>4</sub>-N 농도는 감소하였다. 따라서 음식물류 폐기물 단독처리 보다 하수슬러지를 투입하게 되면 소화조의 안정화 및 고농도의 Biogas 발생량의 증가를 가져올 것으로 판단된다. The purposes of the present research are to suggest a stable and efficient treatment method for food waste in the anaerobic digester and to find good operating conditions for producing good-quality biogas by additionally injecting FeCl<sub>2</sub>, sewage sludge inside the dry single-phase anaerobic digester. As a result of operating the anaerobic digester of food waste by using a reactor with the effective capacity of 10L, the higher biogas generation ratio appeared in conditions of adding sewage sludge than the anaerobic digester using food waste. Also, the methane generation ratio was the higher methane production can be expected. when adding the sewage sludge than that was mixed and putted into than input of food waste. It was appeared that as the concentration of H<sub>2</sub>S was maintained in less than 300 ppm at a reactor excluding conditions of RN1 A that FeCl<sub>2</sub> was not put into, it inhibited toxic effects of anaerobic digestion of H<sub>2</sub>S. The case of NH<sub>4</sub>-N was shown that the anaerobic digestion efficiency increases as a result of putting sewage sludge into. Also, it showed the stable VFA and pH control effect by combining treatment of additives. As a result, the better the anaerobic digestion efficiency gets, the biogas generation, methane concentration and pH of digestion sludge increased, but the concentrations of VFA and NH<sub>4</sub>-N were reduced. Accordingly, it was determined that if the sewage sludge was added in rather than single treatment of only food waste, it will bring better stabilization of the digester and increase high-concentration biogas generation amount.