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.

β-d-glucopyranose에 대한 순이론적 연구: 4C1chairform

양지현, 안익성, 민병진 배재대학교 자연과학연구소 2013 自然科學論文集 Vol.24 No.1

In this study, we have investigated potential energies of β-D glucopyranose in vacuum using QM and MM methods. In QM calculation, the local minimum geometries have been optimized in the level of B3LYP/6-311++G**. And we use AMBER package program and GLYCAM_06 force field for MM optimization. As a consequence, we confirm that GLYCAM_06 force field matched QM calculation roughly.

뇌졸중 후 중추성 통증 환자에 대한 동서협진이 진통과 재활에 미치는 영향

이현종,김수영,이상훈,서동민,이두익,김건식,이재동,이윤호,양형인,박재경,최도영 WHO COLLABORATING CENTRE FOR TRADITIONAL MEDICINE 2003 東西醫學硏究所 論文集 Vol.2003 No.-

Purpose : In order to study the effectiveness of East-West pain treatment on central poststroke pain(CPSP), we evaluated its effect on alleviation of pain and rehabilitation of CPSP Patients who were treated with electroacupuncture and west pain treatment for four weeks. Methods : Twenty four patients diagnosed by their pain characteristics of central pain from stroke were treated with sympathetic nerve block, gabapentin, amitriptyline, and electroacupuncture for four weeks. Pain intensity through the visual analogue scale(VAS), and improvements of mobility and rehabilitation through the modified Barthel index(MBI) and Rankin scale(RS), respectively, before and after pain treatment were also assessed. Results : VAS pain scores were significantly improved from 7.7±1.7 to 4.4±2.0 with pain treatment(p<0.05). In accordance with improvement of pain scores, RS and MBI scores were also improved from 2.88±0.95 to 2.13± 1.01 and from 83.0± 16.9 to 94.7±9.5(p<0.05), respectively, with pain treatment(p<0.05). Conclusions : It was suggested that the active pain treatment was contributed to the rehabilitation of CPSP patients, resulting in improvement of quality of life of CPSP patients. Futhermore, East pain treatment in combination with West pain treatment may be useful modality to alleviate CPSP.

편두통 환자의 임상 양상 및 생체전기 자율반응과의 상관성 고찰

이현종,정인태,김수영,이두익,김건식,이재동,이윤호,최도영 WHO COLLABORATING CENTRE FOR TRADITIONAL MEDICINE 2004 東西醫學硏究所 論文集 Vol.2004 No.-

Objective : We had a clinical report in headache but didn't in migraine. We have planned this study in order to get the basic data of migraine in oriental medicine. Methods : The patient of 36 in migraine checked sec, age, onset, family history, severity of pain, influences of life, induced cause, clinical pain characteristics, associated symptom, treatment style, and paescription, frequency, using period of analgesics by a questionnaire and differentiated syndromes in migraine and evaluated autonomic bioelectric response recorder(ABR-2000). Results : There are 23.4% in prevalence rate of migraine. The ratio of sex is M: F=1:17. The age of an attack is the highest in thirties. The patient are the most in forties. The mean duration of illness is 12.0±9.9 years. 83.4% had a family history. 61.1% had a moderate grade in severity of pain. 77.8% selected fatigue in induced cause of migraine. 69.4% had tingling sense, nausea and vomiting in the associated symptoms. 91.7% used analgesics for treatment and 51.5% of them used analgesics voluntarily. 61.9% of them take analgesics less than once in a week. 33.6% had the phlegm syncope headache in differentiation of syndrome. In ABR-2000 results, item of graph showed low tendency mostly. Conclusions : We expected that this re port of clinical progress, differentiation of syndromes and ABR-2000 results in migraine would be used basic data by oriental medicine to treat migraine.

Sol-Gel 코팅법에 의한 TiN/Al_2O_3/Tialon 복합체의 제조 및 분석에 관한 연구

姜益均,車銀姬,韓相鉉,金勇權 慶熙大學校 1990 論文集 Vol.19 No.-

TiN/Al_2O_3/Tialon comlposite was prepared by sol-gel processing of alumina sol, TiN, AIN, and Y_2O_3. The resultant composite was calcined at 900℃ and a number of test bars were cut from the composite to press uniaxially and isostatically at 20,000 psi and to sinter at 1650℃ and 1,700℃ for one hour in nitrogen atmosphere. Examination of the bar showed the structure of the composite to be a mixure of closest packed microcrytalline materials, and its mechanical property to be available for metal cutting, abrasive, protective, and decorative object ;

^182_74W의 低에너지 準位에 관한 硏究

金顯昌,車承翼 成均館大學校 科學技術硏究所 1984 論文集 Vol.35 No.1

We have studied the low lying energy levels of ^182_74W by γ-ray detection with 89.4cc Ge(Li) detector. Those γ-rays are produced by β-decay of ^182_73Ta. Detected 1-ray energies are good agreement with those previously reported, but the relative intensities show a little difference, probably due to the error of wrong background estimation. In this measurement, 146, 1435 kev γ-ray energies are not observed. But observing of 1180, 1409 kev weak transitions we could confirm the 1510kev level.

우수·비우수 투기 종목 집단 선수들의 경쟁불안에 관한 연구

윤익선,김관현,조인철 龍仁大學校 武道硏究所 2001 武道硏究所誌 Vol.12 No.1

The purpose of this study is to examine the competitive anxiety of players and to help them improve their game results by solving the anxiety during sports activity. This researcher took total 158 players, 80 excellent players and 78non-excellent players, as objects of study, and studied comparatively on competitive anxiety during sports activity by using CSAI - 2 to them. The result of this study were as follows; The somatic state anxiety and cognitive state anxiety of the excellent group were lower than the other, but confidence of the excellent group was higher. Especially somatic state showed remarkable difference of a <.05 level between them.

産業社會의 學生問題와 指導方案 : 韓國産業化 段階의 表象的 課題와 學生指導方案

金益鉉,李達錫,吳成東,曹正基 조선대학교 학생지도연구소 1987 生活指導硏究 Vol.9 No.-

Wavelet 변환을 이용한 HIS 컬러영역에서의 디지털 칼라 영상의 Watermarking

최익환,최현주,최흥국 인제대학교 2002 仁濟論叢 Vol.17 No.1

디지털 워터마킹은 디지털화 된 영상자료의 저작권 보호에서 매우 활발히 연구되고 있는 분야이다. 디지털 영상의 불법적인 내용 조작을 막고, 영상의 소유권을 보장할 수 있는 방법으로 워터마킹이 쓰인다. 본 논문에서는 컬러 영상에 대한 명암도를 이용하여 공간 영역에서 시각에 덜 민감하게 정보를 은닉하기 위해 HIS 컬러영역에 wavelet 변환을 적용하고 인간의 시각에 덜 민감한 고주파 영역에 워터마크를 삽입하였다. Digital Image Watermarking(DIG) is very active research in protection copyright of digitized media. Watermarking used for protect digitized media against illegal operation, for protection of property. In this paper, using property of discrimination between achromatic color and chromatic color, insert watermark in high frequency domain using wavelet transform.

범용 CAD/CAM 소프트웨어의 비트맵 아이콘 모듈 개발

양현익 漢陽大學校 工學技術硏究所 1996 工學技術論文集 Vol.5 No.1

Graphical User Interface has been a key role for a user to select among the commercial softwares. Coventional Graphical User Interfaces of the general purpose CAD/CAM softwares provide pop-up and/or roll-down menu systems and require series of the mouse clicking actions, which is very tedious job for a entry level mechanical designer. Using Bitmap Icon architecture in Graphical User Interface can be a possible solution to avoid the aforementioned. It provides clear, soft and multi-colored icon image, and each icon can be furnished with the unique command. This paper describes the general development concept of the Bitmap Icon menu and its architecture, and implementation. To develope the Bitmap Icon menu system, several techniques are adapted, such as the precise control of the high resolution computer graphics, data interface techniques between UNIX system and PC, and color mapping. It has been sucessfully ported to the up-coming commercial CAD/CAM software named Eng3.