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.

상악동구강 누관

현건수,권현오,양훈식,김중환 중앙대부설한국의과학연구소 1985 한국의과학 Vol.17 No.3

당뇨병성 신경병증에서 근위부 비골신경전도 검사를 이용한 병태생리학적 접근

김동현,이강건,박종원,박태환,안병철,권오상 대한신경과학회 1998 대한신경과학회지 Vol.16 No.2

國産스테인레스鋼線系 矯正用線材의 開發과 物理的 性質에 關한 硏究

권오원,성재현,이기대,경희문 대한치과교정학회 1989 대한치과교정학회지 Vol.19 No.2

The physical properties of seven sizes of control groups and experimental group in stainless steel orthodontic wires were studied in tension, hardness, bending, torsion and observation of microstructure. The wires (0.40 - 0.90mm dia.) of round type were tested in the as-received condition. The wires of control groups were TRU-CHROME and REMANIUM, and experimental group was SK wire which was developed by ourselves and made in Korea. The results were as follows: 1. The chemical compositions of control groups and experimental group were austentie stainless steel wires of SOS 304. 2. Higher values of tensile and yield strength in tension were control group I, experimental group, control group II. Maximum tensile and yield strength of experimental group were 203.63 ±1.41kg/mm²in 0.70mm diameter and 148.96 ± 4.88kg/mm² in 0.60mm diameter, and maximum elongation was 5.20 ± 0.57% in 0.45mm diameter. 3. Hardness values of experimental group were similar to control groups. Maximum hardness values were 596.2 ± 13.66 Hv in 0.45mm diameter wire of control group I, 590.5 ± 20.08Hv in 0.50 mm diameter wire of control group II, and 563.6 ± 5.35 Hv in 0.70mm diameter wire of experimental group. 4. Torsion properties of experimental group were similar to control group I and more than control group II. Maximum torsion cycles were 31.8 ± 2.48 in 0.45mm diameter of control group I,17.4 ± 4.84 in 0.60mm diameter of control group II, and 24.6 ± 3.04 in 0.45mm diameter of experimental group. 5. Maximum bending cycles of experimental group were smaller than control groups. Maximum bending cycles were 9.00 ± 0.00 in 0.50mm diameter wire of control group I, 10.0 ± 0.82 in 0.40mm diameter wire of control group II, and 8.0 ± 1.26 in 0.50 mm diameter wire of experimental group. 6. Microstructures of experimental and control groups co-existed with martensited austenite structure and elongated austenite structure. 7. The direction of wire fracture was propagated parallel to torsion direction typically and there was no probability showing wire fracture at inclusions and surface scratches. 8. The type of wire fracture was brittle fracture at initiation site and ductile fracture at core.

임상사회사업 실천에 있어서의 성적 이슈에 관한 고찰 : Focusing on masturbation, promiscuity and homosexuality 자위행위, 성 난잡, 그리고 동성애를 중심으로

권진숙,오현숙 한국 정신보건 사회사업학회 1995 정신보건과 사회사업 Vol.2 No.-

This study discusses a position on attitude of clinical social worker on sexual issues in Korea. Phobic reaction to sexual issues of clinical social worker in Korea are due to lack of knowledge, experience, and cultural stereotypes. It has been an obstacle when helping clients who have sexual issues. Therefore, first step of this study is to review it's historical view, perspectives of causes focusing on masturbation, promiscuity and homosexuality. Similarities in the development of people's attitute and viewpoints to those have been found. Second, Korean's position and attitude toward the issues have historical similarities between western cultures and Korean. Third, this study tries to discuss appropriate positions and effective attitudes of the clinical social worker to the issues and clients who have such problems.

各種 喀痰消化劑가 抗酸菌死滅에 미치는 影響

權智順,權五溶,崔大卿,白太鉉 충남대학교 의과대학 지역사회의학연구소 1985 충남의대잡지 Vol.12 No.1

For the isolation of mycobacteria in sputum specimens, it is essential to use the most gentle procedure of digestion system for the survival of organisms. The present studies were undertaken to evaluate and compare the effect of various sputum digestants on the death of Mycobacterium fortuitum and Mycobacterium tuberculosis. The results were summarized as follows: 1. Death rates of M. tuberculosis in a solution of 2% NaOH, 3% NaOH and 4% NaOH digestants after 30 minutes of contact time were 97.1%, 97.6% and 97.9%, respectively. In the digestants of 2% NaOH, 3% NaOH and 4% NaOH solution after 1 hour of contact time, survival rates were less than 2%. 2. Death rates of M. tuberculosis in Zephiran-N-acetyl-L-cysteine digestant after 30 and 60 minutes of contact time were 28.5% and 39.5%, while those of M. fortuitum after the contact time were 74.1% and 81.2%, respectively. 3. Death rates of M. tuberculosis in Zephiran-trisodium phosphate digestant after 30 and 60 minutes of contact time were 36.1% and 40.3%, and those of M. fortuitum after the contact time were 71.6% and 74.2%, respectively. 4. Death rates of M. tuberculosis and M. fortuitum in N-acetyl-L-cysteine-NaOH (2%) digestant were similar to the digestant of 2% NaOH solution.

조기위함에서 침윤, 유형 및 분화도에 따른 p53, bcl-2의 발현

권오선,조현득,오미혜,김의한,양승하 순천향대학교 의학연구소 2006 Journal of Soonchunhyang Medical Science Vol.12 No.2

..

일본 지역사 교육의 계열성과 교재 선택의 관점

권오현 경북대학교 사범대학 부속 중등교육연구소 2005 중등교육연구 Vol.53 No.2

이 글의 목적은 일본의 학습지도요령을 분석하여 지역사 교육의 계열성을 제시하고, 아울러 대표적인 지역사 교육론을 분석하여 교재 선택의 관점을 도출하는 데 있다. 일본 지역사 교육의 계열성은 '기능과 태도, 학습 내용, 지역과 국가, 지역의 범위'란 관점에서 분석하였다. 분석의 결과 그 특징으로는 ①태도 중시에서 기능 중시로의 발전, ②학교급별 역사 교육 내용의 특성에 따른 차별성, ③지역사의 독자성 인식과 국가사의 구체적 인식간의 관계 불명확, ④동심원적 확대법에 따른 지역 범위의 확대 등을 들 수 있다. 한편 일본 학습지도요령의 입장을 충실하게 반영한 오마타 모리오의 경우, 지역사 교재의 선택 관점으로 ①전체사의 구체화, ②향토 생활 문화의 형성과 전개 인식, ③향토 인물에 대한 인식 심화, ④역사적 경관과 지리적 조건의 파악 등을 제시하고 있다. 그리고 지역상(地域像)의 인식을 목적으로 하는 사토 테루오의 경우, 지역사 교재로 지역의 특성을 잘 반영하는 사건이나 역사적 경관, 생활문화, 지역의 인간 집단 또는 대표적 인물, 전통 산업 등의 소재 중에서 지역의 과제, 독자성, 주체성 등을 인식하는 데에 도움이 되는 것을 선택하여 지역상을 구성할 것을 제안하고 있다. The purposes of this essay are to analyze the sequence of regional history education in Japan's course of study for history and to draw the viewpoints of teaching materials selection by analyzing theories about regional history education. The sequence of regional history education was analyzed by the viewpoints of 'skill and attitude', 'contents', 'region and nation', 'range in region'. In result, the characteristics of sequence are as follows; ①transition from attitude valuing to skill valuing, ②distinction by characteristic of history education content, ③indefiniteness of relation between the recognition about regional history's originality and the concrete recognition about national history, ④expansion of region's range by environment expanding method. And, Omata Morio proposes followings as the selection viewpoints of teaching materials for regional history education.; ①concreteness of national history, ②the recognition about formation and development of life culture in region, ③the recognition about great man who lived in region, ④the understanding of historical scenes and geographical conditions. And Sato Teruo emphasizes the formation and recognition of region's image as the purpose of region history education. He suggests to select teaching materials for that.

부정교합 아동의 성장에 따른 연조직 측모의 변화

권오원,경희문,장병천,성재현,김정민 대한치과교정학회 1989 대한치과교정학회지 Vol.19 No.3

This investigation was undertaken to know how soft tissue facial profile could changed with age. The 3 serial lateral cephalometric roentgenograms of the twenty nine boys and twenty six girls between 9 and 13 years of age were studied and the findings seemed to warrant the following conclusions. 1. The author made the tables of means, standard deviations in each item, sex, age. 2. Soft tissue facial angle, soft tissue facial convexity including the nose tended to increase, but others tended to remain relatively stable. 3. Facial soft tissue thickness increased with age and the growth of facial soft tissue in the middle rgion (point A, LS, LI)was greater than others in the facial region. 4. In the soft tissue vertical proportions, GI'-Sn/Sn-Me' was 1.1, Sn-St/St-Me' was 0.51:1, Sn-LI/LI-Me' was 0.82.1 and those were stable with age.

정상교합자의 치열궁 형태

권용철,성정옥,권오원,성재현 대한치과교정학회 1989 대한치과교정학회지 Vol.19 No.1

This study was designed to investigate dental arch shapes buccally and lingually at Bracket Level of Koreans. This involved studying 63 inviduals (37 males, 26 females) with normal occlusion ranging in age from 17 to 24 yesrs old. The landmarks were digitized and measurements and statistical analysis were performed by NEC 9801 V-M computer. The Results were as Follows: Bicanine width, Bipremolar width and Bimolar width were larger in males than in females. Buccal and lingual arch form and coordination form were obtained by NEC 9801 V-M computer. The parabolic equations which represents buccal and lingual arch form were obtained.