http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
박종환,허재영,이수림,이재훈,황세욱,조현지,권진혁,장영호,서동철,Park, Jong-Hwan,Heo, Jae-Young,Lee, Su-Lim,Lee, Jae-Hoon,Hwang, Se-Wook,Cho, Hyeon-Ji,Kwon, Jin-Hyeuk,Chang, Young-Ho,Seo, Dong-Cheol 한국환경농학회 2021 한국환경농학회지 Vol.40 No.1
BACKGROUND: Although the calcined oyster shell can be used as a calcium-rich adsorbent for phosphate removal, information about it is limited. The purpose of this study was to evaluate the phosphate adsorption characteristics and its mechanism using calcined oyster shells. METHODS AND RESULTS: In this study, calcined oyster shell (C-OS600) was prepared by calcining oyster shells (P-OS) at 600℃ for 20 min. Phosphate adsorption by C-OS600 was performed under various environmental conditions. Phosphate adsorption by C-OS600 occurred rapidly at the beginning of the reaction, and the time to reach equilibrium was less than 1 h. The optimal isotherm and kinetic models for predicting the adsorption of phosphate by C-OS600 were the Langmuir isotherm and pseudo-second order kinetic model, respectively, and the maximum adsorption capacity derived from the Langmuir isotherm was 68.0 mg/g. The adsorption properties of phosphate by C-OS600 were dominantly influenced by the initial pH and C-OS600 dose. In addition, SEM-EDS and FTIR analysis clearly showed a difference in C-OS600 before and after phosphate adsorption, which proved that phosphate was adsorbed on the surface of C-OS600. CONCLUSION: Overall, the calcined oyster shell can be considered as an useful and effective adsorbent to treat wastewater containing phosphate.
박종환,오상천,동진근,Park, Jong-Hwan,Oh, Sang-Chun,Dong, Jin-Keun 대한치과보철학회 1995 대한치과보철학회지 Vol.33 No.1
This study was designed as a reference of vertical dimension in prosthetic treatment. The author analyzed six facial measurements, namely, (1) the height of lower face at maximum intercuspal position, (2) the height of lower face at resting position, (3) midface, (4) external ear and lateral wall of orbit, (5) interpupillary distance, (6) distance between pupil and mouth in the 100 Won-kwang Univ. Dental collage students(50 : male, 50 : female), who have normal occlusion, no posterior prosthesis, no experience of orthodontic treatment, and no deformity of facial soft tissue and no temporomandibular dysfunction. The results of this study were as follows : 1. The length of midface was shortest and the inter-pupillary distance was longest in both male and female. 2. The length difference with the length of midface and lower face at maximum intercuspal position was 5.64mm in male and 2.23mm in female, so the lower face was longer, 3. The facial measuring component, similar to lower face at maximum intercuspation, was the length of between medial wall of external ear and lateral wall of orbit. It's difference was 1.3mm in male, 1.77mm in female, and the lower face was shorter. 4. The difference of lower facial length in resting position and maximum intercuspation was 2.48mm in male, 2.24mm in female, the length of resting position was therefore longer. 5. The most clost correlation with the height of maximum intercuspal positioning lower face was resting lower face in both groups.
비만 고령여성의 좌식행동과 Cystatin C 및 혈압의 관계
박종환(Park, Jong-Hwan),박상갑(Park, Sang-Kab),이덕만(Lee, Duk-Man),정민기(Jeong, Min-Ki),김동현(Kim, Dong-Hyun),이태홍(Lee, Tae-Hong),전성호(Jun, Sung-Ho),박종국(Park, Jong-Kook),김은희(Kim, Eun-Hee),민석기(Min, Seok.Ki),박진기(Park 한국체육과학회 2014 한국체육과학회지 Vol.23 No.1
The purpose of this study was to examine the relationship between the sedentary behavior and cystatin C, blood pressure in obese elderly women. Total of 80 obese elderly women (aged 70.3±O.4 years, mean±SEM; body mass index ≥25㎏/㎡) were analysed in the cross-sectional design. Prior to the blood collection, participants were asked to wear an uniaxial accelerometer for 4 consecutive weeks for the determination of sedentary behavior status. After a 10-h overnight fast, fasting venous blood samples were obtained from each participant. Fasting serum cystatin C concentrations was positively correlated with the sedentary time (r=0.599, P=0.001). The sedentary time was positively correlated with pulse pressure in obese elderly women (r=0.340, P=0.002). Moreover, the sedentary time was positively correlated with plasma insulin concentrations in obese elderly women (r=0.742, P=0.001). This study demonstrates that high amount sedentary time may negatively influences on renal function in obese elderly women. In summary, the current findings of the study suggest that reducing sedentary behavior could have public health implications including the prevention of obesity and blood pressure.
박종환 ( Jong-hwan Park ),이효종 ( Hyo Jong Lee ) 한국정보처리학회 2014 한국정보처리학회 학술대회논문집 Vol.21 No.1
폐쇄회로 TV는 우리의 생활에 밀접하게 접근할 수 있는 수준에 다다르게 되었다. 따라서 중요한 작업은 영상에서 우리가 원하는 개체를 검출해내는 것이라 할 수 있다. 그 중에서 사람의 모습을 촬영해서 사람의 특징을 추출하는 연구가 많이 진행되었고 이를 이용해서 실제 CCTV 영상을 토대로 개체를 검출해내는 시스템에 대해 고찰하였다. 여러 가지 개체 검출 알고리즘 중에서 오픈소스로 제공이 되며, 다중 개체를 검출하기 위해서 Haar-like feature를 이용한 개체 추출 알고리즘을 이용하여 CCTV 다중 대체 검출에 대해 실험을 진행하였다. 정지영상에서는 정면을 응시하는 얼굴영역 검출에서는 높은 성능을 보이며 다른 각도에서는 차이가 있지만 무난한 성능을 보이지만 실시간에서는 보정 작업이 필요하게 되었다.
인체 전기 신호 계측을 위한 pre-amplifier의 제작
박종환 ( Jong Hwan Park ),천우영 ( Woo Young Chun ),박형준 ( Hyung Jun Park ),박병림 ( Byung Lim Park ) 한국감성과학회 1997 연차 학술대회 논문집 Vol.1997 No.-
In this study, the pre-amplifiers were manufac-tured, which correspinds with the properties of signal source, For measuring the EMG, EEG, ECG and EOG``s signal, which are generated at human body, the pre-amplifiers were manufactured in this study which was corresponding with the propertiies of each signal source. So as to do, the bandwidth of filters and the amplitude of amplifiers were adaptively adjusted, according to signal source. Then, the usefulness was represented by showing the measured examples.
질소 및 인 함유 폐양액 처리를 위한 최적 인공습지 시스템 선정
박종환(Jong-Hwan Park),서동철(Dong-Cheol Seo),서동철(Dong-Cheol Seo),서동철(Dong-Cheol Seo),최정호(Jeong-Ho Choi),김홍출(Hong-Chul Kim),이상원(Sang-Won Lee),하영래(Yeong Rae Ha),조주식(Ju-Sik Cho),허종수(Jong-Soo Heo) 한국토양비료학회 2012 한국토양비료학회지 Vol.45 No.5
질소 및 인 함유 폐양액 처리를 위한 최적 인공습지 시스템을 선정하기 위해 처리조의 연결방식을 달리하여 최적 system을 선정하였고, 선정된 최적조건하에서 폐양액 부하량에 대한 적응성을 평가하였다. 현장 폐양액처리장에서 시스템별 정화효율을 평가한 결과 system A의 BOD, COD, SS, T-N 및 T-P의 처리효율은 각각 88, 77, 94, 54 및 94%로서 다른 시스템에 비해 가장 높은 정화효율을 보였다. 현장 폐양액처리장에서 폐양액 부하량별 수처리 효율을 조사한 결과 system A의 BOD, COD, SS, T-N 및 T-P의 처리효율은 폐양액 부하량에 따라 별 차이 없이 각각 87-89, 76-79, 93-94, 52-55 및 91-94%로 전반적으로 높고 안정적으로 처리되었다. 하지만 T-N의 처리효율은 55% 정도 수준으로 폐수배출기준을 안정적으로 만족하기 위해서는 질소 처리효율을 좀 더 향상시킬 필요가 있을 것으로 판단된다. In order to develop constructed wetlands for treating hydroponic wastewater in greenhouse, actual constructed wetlands were used the obtained optimum condition in previous study, and the removal rate of pollutant in the water according to 4 kinds connection method of piping such as system A (UP-UP stream), system B (UP-DOWN system), system C (DOWN-UP stream) and system D (DOWN-DOWN stream) were investigated. Removal rate of biochemical oxygen demand (BOD), chemical oxygen demand (COD), suspended solids (SS), total nitrogen (T-N) and total phosphorus (T-P) by system A (UP-UP stream) connection method in actual constructed wetlands were slightly higher than other systems. At the system A, the removal rate of BOD, COD, SS, T-N and T-P were 88, 77, 94, 54 and 94%, respectively. Under different hydroponic wastewater loading, the removal rates of pollutants were higher in the order of 75 L m<SUP>-2</SUP> day<SUP>-1</SUP> ≒ 150 L m<SUP>-2</SUP> day<SUP>-1</SUP> ?300 L m<SUP>-2</SUP> day<SUP>-1</SUP>. Therefore, optimum connection method was system A for treating hydroponic wastewater in greenhouse.
박종환(Jong-Hwan Park),신승옥(Seung-Ok Shin) 한국콘텐츠학회 2018 한국콘텐츠학회논문지 Vol.18 No.12
본 연구는 중년기 여성의 친부모 부양경험에 관한 연구로써 친부모를 부양하는 중년 여성 10명을 대상으로 연구하였다. 그리고 질적연구 방법의 하나로 심층 면담을 통해 자료를 수집하여 Colaizzi의 현상학적 방법으로 분석하였다. 수집된 모든 자료들에서 총 244개의 문장을 추출하였고, 그 중에서 67개의 의미 있는 문장들을 도출하였다. 그리고 그 의미 있는 문장들을 9개의 하위주제로 범주화 하였고, 이어서 4개의 상위주제를 도출하였다. 연구 결과로는 첫째, 부양에 대한 이유와 동기로는 어쩔 수 없는 상황에서 부양하게 되었고, 그리고 자녀로서의 당연한 의무감과 책임감을 들 수 있었다. 둘째, 부양경험에서 겪는 심리적 현상으로는 부양부담으로 인한 무거운 마음을 감수하고 후회하지 않도록 부모 곁을 지켜드리는 모습으로 나타났다. 셋째, 부양경험의 의미로는 부모님을 평생의 선물처럼 여기고 서로를 향한 마음이 깊어지는 긍정적요소로 작용하고 있었다. 끝으로, 부양경험의 영향으로는 부모에 대한 이해 증가와 행복에 대한 깨달음 그리고 현재 삶에 대한 성찰과 미래 삶에 대한 조망 등의 결과를 얻게 되었다. Ten middle-aged women who support their biological parents have been interviewed to investigate their experiences of caregiving their parents. As a qualitative research method, data were collected through in-depth interviews and analyzed by Colaizzi`s phenomenological method. Consequently 244 meaningful sentences were selected from the collected interview data and then were sorted into 67 meaningful sentences and, consequently into 9 sub-themes. Finally four high-level themes are wrapped through the summarizing process. The first theme is motivation of caregiving. Inevitable cases are most common for caregiving their biological parents. And, general responsibilities to their parents are also deduced as a motivation of caregiving. The second theme is a psychological phenomenon of middle-aged women while they provide consistent caregiving their biological parents even though they have some troubles with their parents. The third theme is meaning of caregiving. For some women, caregiving their biological parents is their own happiness and gratitude such as lifelong gifts. The final theme is influence of caregiving. Further understanding their parents, and more distinct prospecting their future lives are unexpected fruits from the caregiving their biological parents.