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상대습도와 통과풍속 변화에 따른 콜게이트 타입 활성탄 필터의 암모니아 제거성능 실험
김광현,이정재 대한건축학회지회연합회 2011 대한건축학회연합논문집 Vol.13 No.4
현재 대부분의 공공화장실에서 악취를 제거하기 위해 취하는 방법으로는 단순히 물청소를 통해 악취발생물질을 제거하거나 분사형 제품을 통해 강한 향기로 악취물질을 희석시켜 국부적으로 제거하는 희석제어방법을 사용하고 있다. 위와 같은 방법들은 고단열ㆍ고기밀화 되어 자연환기가 원활하지 않은 공공화장실 내에서는 그 효과가 일시적이며 분사된 액상의 물질이 정체됨에 따라 또 다른 실내오염원으로 작용할 수 있는 위험성이 있다. 이러한 문제점을 해결하기 위하여 기초 설비비가 저렴하고 유지관리가 용이하며 광범위한 악취제거에 효과적인 방법의 도입이 시급한 실정이다. 본 연구에서는 공공화장실내의 효과적인 악취제거를 위하여 활성탄 혼합지를 이용하여 개발된 콜게이트 타입의 필터에 대해 습도와 통과풍속 변화에 따른 one-pass 암모니아 가스제거 성능실험을 실시하여 개발필터의 탈취성능을 정량적으로 평가하였다. The air-fresheners, deodorizers, sterilizers and insecticides being sold now are mostly in diluted-agent form. The diluted control method by some spray type products can deal with only a portion of contaminated air. They cannot purify the whole indoor air and the effect is momentary. Furthermore, when the sprayed liquid product stays in the air, it can become additional indoor contaminants. This study aimed to evaluate deodorization performance of corrugate filters by carbon activated paper for effective odor elimination in public toilet. This study measures degassing rate, degassing volume and pressure loss through one-pass method. The gas for experiment is ammonia main source of odor in toilet. The results of this study are as follows; The degassing rate when the relative humidity is 80 percent is higher than 50 percent. Also the filter eliminate more volume when flow velocity is 2m/s than 4m/s. In the case of pressure loss, the three type of filter have similar figures because they have same pitch and height. According to the deodorization efficiency evaluation, assembly-type activated carbon has better bad-smell removal efficiency than the corrugate type deodorization filter; however, corrugate type deodorization filter is better to toilets; because when the activated carbon would be used as a bad-smell removal filter in the form of small fan unit in the toilet, the weight and pressure loss are absolutely disadvantageous.
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Video-Assisted Minilaparotomy Surgery (VAMS) 부분 신절제술 시 LapSacⓇ을 이용한 종양부위 노출법 및 저온요법
김광현,양승철,한웅규,전황균 대한비뇨의학회 2009 Investigative and Clinical Urology Vol.50 No.8
Purpose: We report a new method of tumor exposure through a minilaparotomy window and cold ischemia using a LapSacⓇ during partial nephrectomy by video-assisted minilaparotomy surgery (VAMS). Materials and Methods: Partial nephrectomy was performed by VAMS in a total of 31 patients during a period ranging from January 2004 to June 2006, and tumor exposure and cold ischemia were achieved by using a LapSacⓇ. We investigated the tumor size and location, mean operative time, mean estimated blood loss, mean cold ischemic time, and pathologic outcomes retrospectively. We evaluated preoperative and postoperative renal function with the estimated creatinine clearance rate by the MDRD equation. Results: The mean tumor size was 2.59±1.30 cm and mean surgical time was 182.5±44.5 minutes. Mean cold ischemic time was 31.84±8.43 minutes. Mean estimated blood loss was 445.65±202.77 ml (range, 100-800 ml), and 3 patients required transfusion. A histopathologic examination confirmed a diagnosis of renal cell carcinoma in 22 patients (71%). The surgical margin was positive in 1 patient. Twenty-one patients had a mean followup of 53±8.19 months. Nineteen patients survived without any disease recurrence, 1 patient survived with lung metastasis within 5 months, and 1 patient died of unrelated cause. There was no significant difference between the preoperative and postoperative estimated creatinine clearance rate by using the MDRD equation. Conclusions: Tumor exposure and cold ischemia were attempted in a partial resection of the kidney by VAMS with a LapSacⓇ. This technique for partial nephrectomy by VAMS might be an effective, safe modality. Purpose: We report a new method of tumor exposure through a minilaparotomy window and cold ischemia using a LapSacⓇ during partial nephrectomy by video-assisted minilaparotomy surgery (VAMS). Materials and Methods: Partial nephrectomy was performed by VAMS in a total of 31 patients during a period ranging from January 2004 to June 2006, and tumor exposure and cold ischemia were achieved by using a LapSacⓇ. We investigated the tumor size and location, mean operative time, mean estimated blood loss, mean cold ischemic time, and pathologic outcomes retrospectively. We evaluated preoperative and postoperative renal function with the estimated creatinine clearance rate by the MDRD equation. Results: The mean tumor size was 2.59±1.30 cm and mean surgical time was 182.5±44.5 minutes. Mean cold ischemic time was 31.84±8.43 minutes. Mean estimated blood loss was 445.65±202.77 ml (range, 100-800 ml), and 3 patients required transfusion. A histopathologic examination confirmed a diagnosis of renal cell carcinoma in 22 patients (71%). The surgical margin was positive in 1 patient. Twenty-one patients had a mean followup of 53±8.19 months. Nineteen patients survived without any disease recurrence, 1 patient survived with lung metastasis within 5 months, and 1 patient died of unrelated cause. There was no significant difference between the preoperative and postoperative estimated creatinine clearance rate by using the MDRD equation. Conclusions: Tumor exposure and cold ischemia were attempted in a partial resection of the kidney by VAMS with a LapSacⓇ. This technique for partial nephrectomy by VAMS might be an effective, safe modality.
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김광현 연세대학교 신과대학·연합신학대학원 1984 연세대학교 연신원 목회자 하기 신학세미나 강의집 Vol.- No.4
금년에도 연세대학교 연합신학대학원에서 대규모의 목회자가 세미나를 개최하고 필자에게 “목회의 전문화와 영성”이란 제목하에 한 시간 할애해 주셔서 감사합니다. 이론적인 강의는 학자님들께 맡기고 저는 일생을 통하여 목회현장에서 겪은 경험을 회상하며 “전문화 시대에서 본 저의 안동목회”란 제목으로 저의 책임을 이행하려고 합니다. 본인은 신학교를 졸업할 즈음 일생을 통하여 세 교회에서 봉사하기를 원했습니다. 첫 교회에서는 일년간 견습을 하고 그 다음 교회에서는 그간 익힌 것을 소신껏 실험하고 그 다음 교회에서는 목회 일생을 마치려고 했습니다. 처음 부임한 교회가 부산 초량교회였습니다. 신사참배 문제로 도일하여 일본 신호 중앙신학교에서 신학수업을 마쳤고 그로 인해 많은 교회에서 저를 청빙하여 주었습니다. 그러나 첫 목회지는 견습이 목적이였으므로 문제가 많은 초량교회를 택하게 되었습니다. 초량교회는 과거 주기철․이학신․한상동 등 훌륭한 목사님들의 영향이 컸으며, 교회분규․제직 총파면의 문제에 봉착하여 노회에서 수습의 진통을 겪고 있었습니다. 그러나 당초 계획대로 비교적 안정된 2년간의 목회를 마쳤습니다.
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전열교환 환기유니트용 엘리먼트 코어의 스페이서 재질 및 가공방법에 따른 성능평가
김광현,김환용,이정재 대한건축학회 2007 대한건축학회논문집 Vol.23 No.9
Recently, efficiency of ventilation for improvement IAQ(Indoor Air Quality) has been obvious, simultaneously, as the importance about saving energy is getting higher, the studies about heat recovery ventilation are being progressed actively in domestic. The existing studies occupy the comparison and valuation by the shape change of element core and the material of liner and feature on the purpose to increase efficiency of heat recovery ventilation's element core for the most part, also performance valuation by spacer which is one of the important factor hasn't been performed systematically.The purpose of this study in another point of view with existing study is to establish the optimum design strategy of element core for heat recovery ventilation through the efficiency experiment about difference in efficiency which is followed by material of spacer and processing method ventilation by comparing and evaluating. This experiment was performed as object of element core which has the same shape(pitch and hight).The results of this study are as follows. The efficiency of element core which was manufactured by chemicals for hygroscopic property to spacer or liner presented superiorly and among others, the thing which calcium chloride was contained in spacer as well is better than the thing which was treated with lithium chloride at only liner for improvement of efficiency, and the design which extend a contacting area by putting pleat at spacer doesn't show the large efficiency rather than the thing which raise the water vapor transmission of liner itself but it makes efficiency increase.
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