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저온 플라즈마 공정에 의한 NO_x 제거시 공정 변수의 영향
박정환,김동주,김교선 江原大學校 産業技術硏究所 2001 産業技術硏究 Vol.21 No.A
In this study, we analyzed the NOx removal effiency by the low temperature plasma process and investigated the effect of several process variables. Most of NO is converted into NO2 and, later, into HNO3 which reacts with NH3 to form NH4NO3 particles. As the frequency of appling voltage increases, as the applied voltage increases or as the residential time increases, removal efficiency of the NO supplied initially increase. The removal efficiency of NOx also increases with the increase of NH3 supplied.
펄스 코로나 방전 반응기를 이용한 NOx 제거 효율 및 입자 성장 분석
박정환,김동주,김교선 江原大學校 産業技術硏究所 2001 産業技術硏究 Vol.21 No.B
In this study, we analyzed the NOx removal efficiency and particle size distribution by the pulsed corona discharge process and investigated the effect of several process variables. The NO removal efficiencies and the particle characteristics were measured and analyzed as the function of initial concentrations of NO, H2O and NH3, applied voltage, pulse frequency and residence time. As the frequency of applied voltage increases, or as the applied voltage increases or as the residence time increases, the NO removal efficiency increases. The change of initial NH3 and H2O concentrations do not affect the NO removal efficiency significantly. The particle concentration and size increases with the increases of initial NO concentration, residence time and applied voltage.
( Mi Sung Park ),( Dong Jin Joo ),( Young Dae Kim ),( Seok Kyo Seo ),( Hyae Min Jeon ),( Young Nyun Park ),( Jun Yong Park ),( Do Young Kim ),( Sang Hoon Ahn ),( Kwang Hyub Han ),( Chae Yoon Chon ),( 대한내과학회 2011 대한내과학회 추계학술발표논문집 Vol.2011 No.1
A previously healthy 24-year-old pregnant woman in the 33rd week of gestation was referred to our institute from local obstetric hospital because of abnormal liver function. Initial laboratory findings showed hyperbilirubinemia, hypoglycemia, elevated liver enzyme, and prolongation of prothrombin time. Because a tentative acute fatty liver of pregnancy (AFLP) could be diagnosed according to symptoms, sign, and laboratory tests, immediate vaginal delivery was done. However, she suffered from progressive hepatic failure and encephalopathy after delivery despite aggressive support care. Thus, the decision to proceed with liver transplantation was made. Molecular absorbent recirculating system (MARS) was applied twice as a bridging therapy and then liver transplantation using cadaver liver was performed. After transplantation, the patient``s hepatic function and encephalopathy was fully recovered. We conclude that liver transplantation should be one of treatment options for AFLP if patient shows progresive hepatic failure and encephalopathy despite aggressive supportive care.
채병주(Byung Joo Chae),송병주(Byung Joo Song),김신선(Sin Sun Kim),김성근(Sung Keun Kim),전경화(Kyong Hwa Jun),송교영(Kyo Yung Song),진형민(Hyung Min Chin),김욱(Wook Kim),박조현(Cho Hyun Park),박승만(Seung Man Park),임근우(Keun Woo L 대한외과학회 2007 Annals of Surgical Treatment and Research(ASRT) Vol.72 No.5
Purpose: Complementary and alternative medicine (CAM) has recently been spotlighted, and CAM can be defined as methods for treating diseases or ways to maintain physical health that out lie outside the boundaries of conventional medicine. We have conducted research to determine the status of CAM usage among Korean gastric cancer patients and their attitudes toward it, to determine what better can be done about CAM. Methods: We surveyed those patients in St. Mary Hospital who were diagnosed to gastric cancer and who volunteered to participate in this study. The survey consists of 38 questions and each question covered personal characteristics information as to whether they have used CAM, whether they were satisfied after taking CAM and their intentions for re-use. Results: A total of 195 patients answered the survey. 80 patients (41%) experienced CAM for the purpose of remedying their gastric cancer. The top leading CAM was dietary supplement for 52% of the patients, ginseng for 26% of the patients and Chinese herbal medicine for 10.8% of the patients. 54 patients (67.5%) were satisfied with the results of the CAM and they said that it had an effect on fatigue (45%). The statistics showed positive correlation between the level of education and the CAM users (P=0.001). Conclusion: The percentage of patients using CAM among the gastric cancer patients was high, up to 41%. Most of these patients wanted more information and discussion with their physicians about CAM therapies. The interesting thing was that most of the CAM was oral medicine. Based on our findings, research on the safety and effectiveness of CAM is required.
도축우(屠畜牛)의 심장근육내(心臟筋肉內) 주육포자충(住肉胞子蟲) 감염실태조사(感染實態調査)와 Sarcocystis cruzi의 동정(同定)
박양주 ( Yang Joo Park ),김종술 ( Jong Sool Kim ),정동수 ( Dong Su Chung ),박양순 ( Yang Soon Park ),신명균 ( Myung Kyun Sin ),김교승 ( Kyo Seung Kim ) 한국동물위생학회 1992 한국동물위생학회지 (KOJVS) Vol.15 No.2
330 Samples of the slaughtered cattle heart muscle were collected from the abattoirs of five regions in Kangwon-do to reveal the frequency of sarcocystis infections during January through December in 1991. The samples were inspected for bradyzoites by the trypsin digestion technique and the possitive samples were fed to dogs and cats for the detection of sporocysts shed in the feces. The results obtained were summarized as follows: 1. The infection rate of bovine Sarcocystis investigated from 330 samples was 43.6%. 2. It revealed that the infection rate of sarcocystis increased gradully with the advance in the age, 14.5% in below two years, 26.1% in the three years, 30% in four years, 54.7% in five years, 74.4% in six years, 90% in seven years and 100% in older than eight years. 3. The cyst walls detected out from the heart muscles were less than 1μm in thickness and the size of bradyzoites were 11.8×2.8μm in average. 4. The size of sporocysts shed in the feces of dogs were 15.8×9.8μm in average and the prepatent periods ranged from 12 to 16days. 5. Sarcocystis found in the bovine heart muscles were identified as Sascocystis cruzi(Hasselman, 1923), wenyon, 1926.
최선의 개별화교육 실현을 위한 양방향 접근법을 적용한 특수학교 학교 교육과정 편성·운영 방안 탐구
강은영(Kang Eunyoung),박경옥(Park Kyoung-ock),박남수(Park Nam-su),박은희(Park Eun-hee),황정현(Hwang Jung-hyun),주교영(Joo Kyo-young),박지민(Park Ji-min),최연호(Choi Yeon-ho) 한국특수교육교과교육학회 2021 특수교육교과교육연구 Vol.14 No.4
본 연구는 특수학교에서 최선의 개별화교육 실현을 이루기 위한 학교 교육과정 편성·운영 절차를 도출하고 이를 교과별 연간 교육과정 수립으로 이어지도록 하는 방안을 탐색하는 데에 목적이 있다. 특수학교에서 학교 교육과정을 편성·운영하는 것은 단위 학교 차원에서 과정이나 학년으로 묶인 집단적 맥락이고, 개별화교육계획(IEP)은 개별 학생의 차원이다. 이렇게 학교 교육과정과 개별화교육이 지닌 고유 성격이 다름에도 불구하고 특수교육에서 교육과정과 개별화교육계획(IEP)을 논할 때, 같은 위계에서의 병렬적 구조로 언급할 때가 많아 개념적 갭(conceptual gap)이 존재하면서 혼란을 야기하고 있다. 이를 위해 학교 교육과정 편성·운영 과정에서 나타나는 일반교육과 특수학교에서의 학교 교육과정 편성·운영은 어떤 차원의 공통점과 차별점이 있는지를 밝혀내고, 양방향 접근법(two-way approach)적 학교 교육과정 편성·운영 과정을 개발하였다. 본 연구결과로, 양방향 접근법을 통한 특수학교 학교 교육과정에 대한 개념적 이해에 대해 제시하고, 특수학교에서 학교 교육과정 편성·운영 절차를 제시하였다. 이를 바탕으로 학교 교육과정 내 교과별 연간 교육과정 수립을 위한 방안을 제시하였다. 본 연구를 통해 특수학교에서 학교 교육과정을 편성·운영할 때 반드시 고려해야 할 점들을 강조하고, 이를 바탕으로 개별 학생들의 개별적 특성을 반영하는 교육이 어떻게 학교 교육과정 안에서 실현되어갈 수 있는지의 방안을 제안하였다. 이러한 탐색 과정을 통해 향후 특수학교의 존재 목적에 따라 개별 특수교육대상학생들이 지닌 각각의 교육적 요구를 충족하면서 동시에 학교 교육의 가치를 최대한으로 실현할 수 있는 구체적인 방안이 후속 연구들로 이어질 것으로 기대하였다. The purpose of this study is to derive procedures for organizing and operating the school curriculum to achieve the best individualized education in special schools, and to explore ways to lead to the establishment of an annual curriculum for each subject. Organizing and operating the school curriculum in special schools is a collective context tied to courses or grades at the unit school level, and the Individualized Education Plan(IEP) is at the level of individual students. Despite these differences in the unique characteristics of the school curriculum and individualized education, when discussing the curriculum and individualized education plan(IEP) in special education, they are often referred to as a parallel structure in the same hierarchy, creating a conceptual gap and confusion. has caused To this end, we discovered the commonalities and differences in general education from the school curriculum organization and operation process, and developed a school curriculum organization and operation process that applied a two-way approach. As a result of the study, a conceptual understanding of the school curriculum for special schools through a two-way approach is presented, and the school curriculum organization and operation procedures in special schools are presented. Based on this, a plan for establishing an annual curriculum for each subject in the school curriculum was proposed. Through this study, the points that must be taken into account when organizing and operating the school curriculum in special schools were emphasized, and based on this, a plan was proposed for how the individualized education of individual students can be realized within the school curriculum. Through this search process, it was expected that, according to the purpose of the existence of special schools in the future, it was expected that a detailed plan to realize the value of school education to the maximum while meeting the educational needs of individual special education students would lead to follow-up studies.
Identification and control of a sensorized microgripper for micromanipulation
Park, Jungyul,Kim, Sangmin,Kim, Deok-Ho,Kim, Byungkyu,Kwon, Sang Joo,Park, Jong-Oh,Lee, Kyo-Il IEEE 2005 IEEE/ASME transactions on mechatronics Vol.10 No.5
This paper presents the design and control of a sensorized microgripper using a voice coil motor and a flexure mechanism. To increase the gripping sensitivity, shape design and determination of sensor attachment position are performed using finite element analysis. Empirical models of the microgripper are acquired for the design of position control and gripping force control. By using the identified models, both the perfect tracking controller for position control and the adaptive zero-phase error tracking controller for force control are implemented. The effectiveness of the proposed model-based control methods is verified by experimental studies.