http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
용해성 poly(dimethy-co-diphenylsilane)공중합체의 특성과 열분해에 관한 연구
강필현,양현수,황택성,김봉만,권오현 忠南大學校 産業技術硏究所 1993 산업기술연구논문집 Vol.8 No.2
Soluble poly(dimethyl-co-diphenylsilane)copolymer,[(SiMe₂)x(SiPh₂)1-x]n where x=0.5 to 0.9., was synthesized by condensation polymerization of dimethyldichlorosilane and diphenyldichlorosilane in xylene. In the TG analysis of the copolymer, weight loss started at 170℃ and the weight residue at 1000℃ was 32%. The copolymer was stabilized by thermal oxidation at 80 to 110℃ for 5 hr. in air, and its thermal stability increased as the temperature increased. The copolymer heat treated above 700℃ showed no organic bonds of C-H and Si-CH₃. while Si-C, and Si-O large bonds were observed. Amorphous SiC was obtained by pyrolysis at 1000℃ and β-SiC at 1200 to 1400℃, in which a better crystallinity of β-SiC was observed at a higher temperature.
오택현(Oh, Taek?hyun) 한국역사연구회 2013 역사와 현실 Vol.- No.88
Two?lettered family names only appear in the history of the Baekje Dynasty, and not in Goguryeo and Shilla. Baekje"s acceptance of family names seems to have been during the Hanseong period, and it is highly possibile that they came through the Nakrang and Daebang troops in 313. Accepting Chinese culture, the Baekje royal families used "Buyeo" family names. Such fact contains several meanings. First, it indicates the direct connection between the practice of using a family name and the embracement of Chinese culture. Second, it shows the Baekje people"s consciousness of a Bu"yeo heritage. Family name was first used by the Baekje royal family but the practice spreaded to the nobility class. Various one and two?lettered family names can be found in diplomatic letters, like the one?lettered names in the letter King Gae"ro?wang sent to China as shown in Nihon Shogi, as well as two?lettered family names recorded in Samguk Sagi. It should be noted that most of the family names in Baekje were two?lettered ones. The reason behind such fashion is unclear. The first letter might have been the result of taking the "King"s name" as family name, and the second letter might have been a regional name. Such phenomenon seemed to have had a relation with the situation in which Baekje"s national power was weakened or in disorder. Actually, since Baekje established a structure of coexistence between the central and the districts, since the end of the Hanseong period, the appearance of two?lettered family names increased. The political interests and privileges of the community led to a system of coexistence with the central line. The "King?Jwa"pyeong?Dal"sol" system, the system of mutual political balance sustained by triangular antipodes, was formed. However, in the late Sabi period this structure of coexistence was destroyed during the reigns of King Mu"wang and Eui"ja?wang. In that time, new families with one?lettered last names appeared, in conflicts within the Jwa"pyeong groups, in the Crown?prince investiture, foreign relationships with China, and during wartime. King Eui"ja?wang designed a new reform policy, in response to this emergence of new factions. He tried to reorganize the power structure and centralize the governing power. As a result, the Jwa"pyeong?Dal"sol system was seriously changed, and so was the structure of coexistence between the central and the districts. This directly contributed to the fall of Baekje.
제주도 지하수 질산염 농도의 시·공간적 변화 특성: 장기(1993-2015) 모니터링 자료의 평가
김호림(Ho-Rim Kim),오준섭(Junseop Oh),도현권(Hyun-Kwon Do),이경진(Kyung-Jin Lee),현익현(Ik-Hyun Hyun),오상실(Sang-Sil Oh),감상규(Sang-Kyu Kam),윤성택(Seong-Taek Yun) 대한자원환경지질학회 2018 자원환경지질 Vol.51 No.1
1993년부터 2015년까지 관측된 제주도 지하수 장기모니터링 관측정(N = 4,835)에서 수집된 지하수 수질자료(N = 21,568)를 기반으로 질산성질소의 시공간적 변동 특성을 평가하였다. 제주도 지하수의 질산성질소 농도의 중앙값은 2.5 mg/L로서 다른 국가나 대륙의 조사 결과에 비해 다소 높거나 유사한 것으로 나타났다. 또한 지하수 용도, 행정구역 및 고도 별로 유의한 차이를 보였다. 특히, 산간 지역에 비해 저지대 해안가에 위치한 농업 및 주거지역에서 농도가 높음을 확인하였다. Mann-Kendall 및 Sen’s slope 분석을 활용한 질산성질소 농도의 추세 분석 결과, 하류 저지 대에 비해 중산간지역에서의 질산성질소 농도 증가 경향이 뚜렷하였다. 제주도 내 토지 피복의 시계열 변화 특성과 결부 지어 보면, 중산간지역의 오염 증가 추세는 농업지역의 확장 등 인위적 활동 증가에 기인한 결과로 판단된다. 반면,기지정된 지하수자원특별관리구역에서는 전반적으로 질산성질소 농도의 감소 경향이 나타났는데, 이는 지하수 관리 측면에서 수질관리를 위한 적극적인 정책이 유효함을 시사한다. 본 연구에서는 제주도 지하수의 질산성질소 오염관리를 위한 적정 방안을 제안한다. The spatio-temporal variations of nitrate concentrations in groundwater of Jeju Island were evaluated by an analysis of time series groundwater quality data (N = 21,568) that were collected from regional groundwater monitoring (number of wells = 4,835) for up to 20 years between 1993 and 2015. The median concentration of NO 3 -N is 2.5 mg/L, which is slightly higher than those reported from regional surveys in other countries. Nitrate concentrations of groundwater in wells tend to significantly vary according to different water usage (of the well), administrative districts, and topographic elevations: nitrate level is higher in low-lying agricultural and residential areas than those in high mountainous areas. The Mann-Kendall trend test and Sen’s slope analysis show that nitrate concentration in mid-mountainous areas tends to increase, possibly due to the expansion of agricultural areas toward highland. On the other hand, nitrate concentrations in the Specially Designated Groundwater Quality Protection Zones show the temporally decreasing trend, which implies the efficiency of groundwater management actions in Jeju. Proper measures for sustainable groundwater quality management are suggested in this study.
김현수,박영택 한국품질경영학회 2001 품질경영학회지 Vol.29 No.3
Among the activities of industrial companies, manufacturing processes are major sources of environmental problems. So, many companies with manufacturing processes have taken the necessary actions to comply with environmental regulations. But, most of them have mainly focused on the 'end-of-pipe techniques' to reduce pollutants in a short period of time. However, these reactive approaches are basically symptomatic treatments and no more appropriate for sustainable development and growth. The cleaner production, which deals with pollutants at the place of origin, has been introduced as a solution to the problem. In this paper, an operational model of cleaner production system is proposed and the factors, which affect the performance of cleaner production, are identified through the field survey of 37 manufacturing companies.
효율적인 영상 이진화를 위한 적응적 Water Flow Model에 관한 연구
임길택,오현화 경주대학교 정보전자기술연구소 2004 情報電子技術論叢 Vol.3 No.-
In this paper, we propose an improved method to overcome the drawbacks of the existing water flow model based method for document image binarization. The proposed method defines the region of interest (ROI) around character areas to restrict rainfall onto the terrain surface. The amount of water required to fill a local valley is automatically determined according to the properties of the valley, thereby eliminating an iterative rainfall procedure which is very time consuming process in the existing method. Finally, to threshold the amount of water filled, a local adaptive method is applied to each pond. In the experiments on three document images, the proposed method showed better performances than the existing water flow model based method in terms of both quality and speed.
Squalene Adjuvant를 이용한 단백질 항원의 세포성 면역반응 유도
도현주,김성열,안종성,하영주,이승찬,오재택,장명호,정홍석,문홍모,박해준 大韓免疫學會 1996 大韓免疫學會誌 Vol.18 No.3
To investigate the role of adjuvant for cytotoxic T lymphocytes (CTL) induction, squalene-based adjuvant was studied its capability eliciting to the induction of cellular immunity as well as humoral immunity to exogeneous proteins. Ovalbumin (OVA) was used as model proteins. It was demonstrated that antigen formulation consisted of metabolizable oil squalene mixed with Tween 80 and pluronic L121 (S/TJ121) could induced the antigen specific CTL responses and antibodies irrespective of immunization routes in mice. We also demonstrated that this antigen formulation was a inducer of CD8+, major histocompatibility complex(MHC) class I-restricted, and antigen-specific C;1'Ls. These data suggest that the squalene-based emulsion system is a potent adjuvant inducing cellular immunity as well as humoral immunity.
박현순,이훈진,조용래,원호택 서울大學校 社會科學大學 心理科學硏究所 1993 心理科學 Vol.2 No.-
본 연구는 교통사고 장기입원 환자와 그 가족들의 재적응과 관계가 있는 심리사회적 요인들을 파악하고, 이를 바탕으로 하여 교통사고 환자들의 치료 및 재활을 돕기 위한 개선책을 제안하는 것이 주 목적이다. 연구 대상은 최소한 2개월 이상 입원 중인 교통사고 환자 56명과 그 보호자(주로 가족)들이었다. 측정 도구로는 본 연구의 목적에 맞게 제작한 면접지와 함께 간이정신진단검사(SCL-90-R),Katz적응척도(KAS)및 외성영향척도(IES)등을 사용하였다. 연구 결과를 요약하면 다음과 같다. 간이정신진단검사 결과, 상당수의 환자들이 심리적 문제(특히 공포나 불안)을 호소하고 있었다. 이러한 심리적 문제들은 신체손상집단보다 두부 및 신체손상집단에서 더 두드러지게 나타나고 있다. 환자들은 현재 상황에 대한 지각 및 가정생활에 대한 만족도, 그리고 여러 장애들에 대한 통제지각 및 예후에 대한 기대가 부정적이었고, 절망적인 태도를 보이고 있다. 특히 사회적 활동에 대한 기대가 부정적이었고, 그 다음은 신체적 손상이었다. 보호자들도 환자들과 마찬가지로 환자의 장래 적응에 대해 비관적일 뿐 아니라, 그들 스스로도 가계의 운영및 가정 생활의 만족도에서 어려움을 겪고 있었다. 기혼부부의 경우에는 교통사고 이후 성생활에서 불만을 많이 겪었다. 교통사고 환자들은 가족들에 대해서는 전반적으로 높은 지지감을 느끼고 있으나, 사고 관련기관에 대해서는 극히 부정적인 시각을 드러냈다. 응급조치의 지연과 불충분한 응급조치 등 교통사고 장기입원 환자들에 대한 치료과정에 여러 문제들이 있었다. 현재 환자들이 받고 있는 치료에 대해 갖는 주된 불만 요인으로는 "치료를 제대로 못받고 있다"는 것과, "치료의 호전이 없다'는 점 외에도 "환자의 상태에 관해 잘 이야기해 주지 않는다"는 것이 주목할만 하다. 마지막으로, 본 연구에서 밝혀진 치료과정에서의 문제점을 개선할 수 있는 몇가지 방안들을 제시하였다. Adjustment Scale, and the Impact of Event Scale. The results are as follows. (1)The percentage of inpatients who reported clinically significant psychological problem was 18.2% in the global severity index of SCL-90-R,, especially 20.0% in anxiety and 32.6% in phobic anxiety. These problems were severer in body-injured inpatients with head injury than i body-injured inpatients without head injury. (2)TA inpatients were very pessimistic and hopeless in the perception of current situations, the degree of satisfaction at family life, and the perceived control and the expectancy of prognosis of various disorders, especially difficulties in social activites and somatic injury. Likewise, their caretakers(mainly family members) not only had difficulties in home management, but also showed pessimistic attitude toward the inpatients' future adjustment and the satisfaction at family life (3)TA inpatients in general felt that their family members were highly supportive, but that the institutions concerned with TA were not supportive. Whereas they on the average perceived that their treating staff(medical doctors and nurses) were supportive, they individually expressed dissatisfaction toward them. (4)In the treatemtn processes of TA inpatients, many problems were found. As for emergency treatment, rapid and sufficient intervention had not been taken. Also, long-term TA inpatients and their treatments due to several reasons. Finally, some suggestions for improving the treatment processes described above were provided.