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.

갯쑥부쟁이(Heteropappus hispidus (Thunb.))의 감마방사선 감수성과 M1 세대 형질변동 특징

오병권,홍경애,송성준,유장걸,이선주,이영일 제주대학교 방사능이용연구소 2003 연구보고 Vol.17 No.-

제주도에서 자생하는 갯쑥부정이(Heteropappus hispidus(Thunb.))에 감마선을 10, 20, 40, 80, 120, 160, 200, 300, 400Gy 수준으로 나누어서 조사한 뒤 발아율 및 발아 30일 후의 본엽 출현을, LD_(50), 본엽길이, 줄기부분의 안토시아닌 색소 형성 유무, 생육 60일 후의 로젯형 엽, multi-shoot 형성율, 초장, 채화 결실율등의 주요 양적형질들을 생존개체를 대상으로 실시하였다. 120Gy 까지의 발아율은 88.5%로 대조구와 큰 차이를 보이지 않았으나 160Gy 이상에서 부터는 급격히 감소하여 치사선량(LD_(50))은 160Gy 범위 정도였다. 또한, 본엽 출연율과 그 길이는 조사선량이 높아질수록 억제되었다. 안토시아닌 색소 형성은 조사전량이 높을수록 대조구 2%에서 30%로 높아졌으며 로젯형도 고선량 처리구에서 발생하였다. Multi-shooting은 80Gy 이상일 때 부터 나타났으며 multi-shooting을 형성하는 개체들은 초장은 짧고 줄기는 가늘게 다발형으로 자라는 특성이 있어서 만일 형질이 고정된다면 화분 관상용 개체로 선발하기에 적합하였다. 특히, 조사선량이 증가됨에 따라서 안토시아닌 색소 형성, 로젯형 개체, multi-shoot등의 개체가 많이 출현되었는데 이는 돌연변이 유기의 선발지표가 될 수 있을 것으로 보인다. The seeds of naturally growing Heteropappus hispidus Thunb were treated by nine different doses(0, 10, 20, 40, 80, 120, 160, 200, 300, 400㏉) of gamma rays to investigate their germination rate and to quantify the characteristics of their germinated plant as like as leaf appearance and length, the formation rate of anthocyanin color in stem 30 days after germination, the formation rate of rosette leaf and multi-shoot, the flowering and seed-bearing, and shoot length. The germination rate at least up to 120 ㏉ was not greatly affected but was rapidly decreased at over 160 ㏉. It seemed that lethal dose(LD_(50)) of germination was 160 ㏉. The leaf appearance and growth was also inhibited, but the formation rate of anthocyanin color in the flower stem was enhanced up to 30% with dose. The rosette plants were observed in plants irradiated with higher than 40 ㏉. Multi-shoots were developed over 80 ㏉. For a short shoot length and bundle of thin stem, it was considered that they can be selected as the potential pot flower plants, through genetic fixation. In particular, it was suggested that the formation of anthocyanin color in flower stem, rosette and multi-shoot plants induced by the morphologically markers for the mutant selection of Heteropappus hispidus (Thunb.)

한복지의 소비성능에 관한 연구

성수광,권오경,황지영 한국의류학회 1991 한국의류학회지 Vol.15 No.2

In this paper, the fabrics for Korean folk clothes(KFC) undergoes repeated laundering under given condition. After this cyclic laundering was applied, the mechanical properties of the specimen were measured using KES-F system in order to evaluated the end-use performance of fabrics for KFC. And also, the crease recovery of fabrics for KFC were measured by shirley crease recovery tester. 78 different kinds of commercial silk fabrics and polyester fabrics for KFC were used for this study. The experimental results were analysed statistically to relate the mechanical properties and the crease recovery of fabrics for KFC. Furthermore, these changes in dimensional stability, mechanical properties and handle of fabrics for KFC were discussed in comparison with those values for silk fabrics and polyester fabrics. The results obtained are as follows. 1. Regardless of materials, remarkable increase are observed in shrinkage of the fabrics for KFC about repeated laundering, but dull increase are observed in shrinkage after 10 cycles of the repeated laundering. On the other hand, slack extend are observed in dimensions after 20 cycles of the repeated laundering. The shrinkage of fabrics for KFC after 10 cycles of the lundering showed that the silk fabrics are 1.74±0.33% (warp direction) and 1.35±0.23% (weft direction) and the polyester fabrics are 1.45±0.22% (warp direction) and 1.25±0.23% (weft direction). 2. Except for tensile property, these changes in mechanical properties of fabrics for KFC by laundering have ±16 range of bending, shearing, compression, surface, thickness & weight as compared with before laundering. Particularly, the LT and RT about 1∼3 cycles of the repeated laundering showed remarkable decrease. And SMD, WC, T & W of fabrics for KFC by the laundering were more increased than one for original fabrics. But B, 2HB, G, 2HG, 2HG5 were decreased more than one for original fabrics. 3. "Stiffness", "Anti-drape", "Crispness" and "Scroop" hand values decrease and"Fullness & softness", "Flexibility & softness" hand values increase with repeated laundering. 4. Remarkable decrease are observed in crease recoveries about 1∼5 cycles of the repeated lundering, but slack decrease are observed in crease recoveries after 5 cycles of repeated laundering. The crease recovery of fabrics for KFC have negative(-) correlation with LT, RT, G, RC and MMD, This fact implies that the smaller these values, the larger the crease recovery. The crease recovery of fabrics for KFC has a high degree of correlation with the mechanical properties such as shearing, compression, surface property. And also, the crease recovery are expected by measuring the mechanical properties such as G, 2HG, 2HG5, RC, WC, LC, MIU, MMD and SMD, according to the obtained regression equation.

育兒相談室에서 追跡觀察한 大邱地方 영유아들의 成長發育에 대해서

權五永,金洪培,李相範 慶北大學校 醫科大學 1981 慶北醫大誌 Vol.22 No.2

本 小兒科 育兒相談室에 登錄된 333名(男兒 185名, 女兒 148名)에 대한 身體發育狀態를 調査하여 다음과 같은 成績을 얻었다. 1. 性別로 본 對象 영아의 成績發育은 各 營養群 모두 男兒가 女兒보다 優位를 보였다. 2. 營養別로 보면 세가지 營養群의 成長發育에서 體重과 身長은 母乳, 混合, 人工營養兒群 사이에는 意味있는 差異를 볼 수 없었다. 3. 體重은 本 調査値가 韓國標準値에 비해 男女 모두 6個月까지는 약간 優位를 보였으나, 그 이후로는 점차 顯著한 優位를 보였다. 그리고 日本平均値에 비해서는 男兒는 첫 2個月을 제외하고는 日本平均値보다 優位를 보였고, 女兒는 生後 5個月까지는 약간 劣勢에 있었으나, 7個月 以後부터는 오히려 약간 優位를 보였다. 4. 身長은 本 調査値가 韓國標準値에 비해 男兒는 첫 2個月을 제외하고는 6個月까지 약간 優位를 나타내었으며, 7個月부터는 1㎝ 以上의 顯著한 優位를 보였고, 女兒는 6個月 以後부터는 약간 優位를 나타내었다. 그리고 日本平均値에 비해서는 男女兒 모두 7個月 以後부터 약간 優位를 보였다. 5. 頭圍는 本 調査群値가 韓國標準値에 비해 男女兒 모두 優位를 보였다. 그리고 日本平均値에 비해서도 男女兒 모두 약간 優位를 나타냈다. Author investigated the growth and developmental status of infants registered in Well Baby Clinic and compared this with the growth standards of Korean and Japanese children. This study group is consisted of 333 infants under 12 months of age with 185 males and 148 females. The following results were obtained: Comparing growth data by sex showed males being superior to females in all measurements and comparing growth data according to breast-fed, bottle-fed and mixed-fed infants showed no significant difference. Comparing body weight with the growth standard of Korean children showed their weights being slightly superior to those of Korean standrrd up to 6 months of age and after then far more superior. Comparing body weight with the growth standard of Japanese children showed that body weights of male infants were superior to those of Japanese standardexcept first 2 months and those of female infants inferior to those of Japanese standard up to 5 months of age and after then slightly superior. Comparing body length with the growth standard of korean children showed that body lengths of male infants were slightly superior to those of Korean standard up to 6 months of age except first 2 months and after 7 months of age far more superior and those of female infants were slightly superior to those of korean standard after 6 months of age. Comparing body length with the growth standard of japanese children showed their lengths being slightly inferior to those of japanese standard up to 7 months of age and after then slightly superior in both sexes. Comparing head circumference with the growth standard of Korean children and those of Japanese children showed their circumfesences being slightly superior to those of Korean and Japanese standard in both sexes.

Chloroform 용매 중에서 Aniline과 Iodine간의 Charge Transfer Complex 형성 Mechanism에 대한 연구

권오윤,崔相元,金南政 여수대학교 1989 論文集 Vol.3 No.-

The formation of charge transfer complex between indine and aniline in chloroform solvent have been studied kinetically by using conductivity method. The initially formed outer charge transfer complex was transformed into a inner charge transfer complex. The pseudo first order rate constants and aitivation entropy are affected by aniline concentration. The second order rate constants for the decomposition of the outer charge transfer complex(first order in aniline and in the outer charge transfer complex) depend on the aniline concentration. The ease with which the transformation proceeds depends on the relative magnitudes of the enthalpy of formation of the outer charge transfer complex as well as dielectric properties of aniline.

個人用 컴퓨터를 利用한 水力發電댐의 流入量 豫測

權五憲,李尙和 忠南大學校 産業技術硏究所 1986 산업기술연구논문집 Vol.1 No.2

The main purpose of the study is to develop a computer program in the personal computer which calculates numerically the inflow from the rainfall and displays the inflow hydrograph on a CRT. The computer programs, which were developed for the inflow forecasting of the short-range, employed the storage function method. The program which computes the inflow from the rainfall would be applicable effectively both to planning the daily/weekly power generation and to operating the dam for the flood control. The inflow calculated by the computer program gave a good agreement with the actual inflow for the Choon Chun and the Cheong Pyung dam.

인도의 통신규제 정책과 시장 분석

권오성 국제무역학회 2004 국제무역연구 Vol.10 No.2

인도는 향후 세계 경제강국으로 부상할 BRICs 국가중의 하나로 시장잠재력이 매우 큰 나라이다 인도의 IT산업은 소프트웨어 부문의 급성장에 힘입어 발전하고 있지만, 통신부문은 상대적으로 발전수준이 낮아 통신인프라 구축이 매우 열악한 수준이다. 이에 따라 인도정부는 IT산업 발전의 걸림돌로 작용하고 있는 IT인프라 수준을 높이기 위해 국가정보화 정책의 일환으로 통신망 현대화를 추진하고, 통신사업자간 경쟁을 통해 통신망구축을 촉진시키는 통신자유화 정책을 적극적으로 추진하고 있다. 따라서 IT강국의 위치를 굳히고 있는 우리나라의 경우 인도의 정보통신시장에 대한 보다 적극적인 진출 전략을 추진하여야 하며, 이를 위해 인도정부가 추진하고 있는 정보통신정책과 통신 시장을 심층적으로 분석할 필요성이 존재한다. 본 연구에서는 인도 정보통신시장의 진출전략을 국가 차원과 기업 차원에서 제시하였다. In the era of so-called knowledge-based economy, the creation and utilization of IT and new knowledge are recognized as core factors to enforce IT industry and to increase national competitiveness. Advanced countries, therefore, have heavily invested their resources on IT sector and introduced competition into the telecommunication market. India is trying to make informationized society through telecommunications market liberalization and IT industry development. India is investing lots of resources to construct telecom infrastructure such as wired and wireless network and consider informationized society promotion as top national agenda. In this effort, Korea is a benchmarking model for them. Successful entering into India telecommunications market requires close analysis and correct understanding of its telecom regulatory policy and infrastructure level. In this paper, therefore, tried to analyse telecom and IT policy, telecommunications market and carriers of India, which have high potential of economic cooperation in IT sector with Korea. And based on this analysis, tried to find out ways to enter into telecommunications market of India.

슬링(sling)과 고정된 지지면에서의 팔굽혀펴기 동작 시 근 활성도 비교

오재섭,박준상,김선엽,권오윤 한국전문물리치료학회 2003 한국전문물리치료학회지 Vol.10 No.3

아파트단지의 규모에 따른 적정 내부도로 패턴설정에 관한 연구

권오상,이영무 홍익대학교환경개발연구원 1997 환경개발연구논문집 Vol.2 No.-

The purpose of this is to establish inner road pattern according to the size of a residential complex, namely 250m×250m as small complex 500m×500m medium complex and 1km×1km large one. The criteria of establishing road pattern NO.1, efficient access to each apartment buildings from such outside roads as the artery roads or the collector-distributer roads. NO.2, guaranteeing the safety of occupants by way of eliminating the through traffic which poses not only traffic congestion but also safety hazards. NO.3, further enhancing the living condition of occupants by separating the pedestrians from vehicle movements. Inner pattern of road system of any apartment complex greatly depends on the configuration of the site, exterior road and adjacent land use. In this study, the exterior condition is ignored in order to create prototype models. Accordingly the sites are shown as squares in three different sizes, small, medium and large, in order to establish the conceptual guidelines. The results are ; small complex is best suited with the single through road which comes in from one end of the site and goes out through the other end. The medium and large sites are best served with a ring road at the center and branching access roads towards the perimeter, the former with four and the latter with eight.

都市便益施設에 의한 定住環境 分析에 관한 硏究

權俊五,金宇赫,姜聲泰 조선대학교 국토개발연구소 1996 국토개발연구 Vol.16 No.1

This Study is to obtain the technical index using the urban facilities on the objects of urban in Korea, compares and analyzes the urban scale of according to the population, analyzes the living environment of urban and them is to suggest the policies for the balanced development of nation and the effective growth of urban systems, and the research of nation and the effective growth of urban systems, and the research results are as follows; ① in the case of the urban of the population more than 500,000, educational, hygienic and cultural facilities have the most influence on it, ② in the case of one with 200,000 to 500,000, information, communication, social welfare, administration and leisure facilities and ③ in the cse of one with population less than 200,000, social welfare, leisure and hygienic facilities, so, it is considered that the expansion of each urban facility is required in the living environment of each city.