경상분지내 동광상 관련 진동화강암류에 대한 지화학적 연구

이재영,이진국,박법정,이인호,김상욱,Lee, Jae Yeong,Lee, Jin Kook,Park, Beob Jeong,Lee, In Ho,Kim, Sang Wook 대한자원환경지질학회 1994 자원환경지질 Vol.27 No.2

Jindong Granites are plotted mainly in the region of granodiorite~diorite of the Streckeisen's diagram, while Yucheon-Eonyang Granites and Onjonri Granites in the region of monzo-granite and monzo-granite~granodiorite, respectively. Jindong Granites show a differenciation trend of calc-alkaline magma, and its magmatic evolution from intermediate to acidic rocks, which might form mineralizing solution, is consistant with the general path of the Cretaceous granitic rocks including Yucheon-Eonyang Granites and Onjongri Granites. The differenciation index (D.I.) is 35~80 for Jindong Granites, which is lower than 85~95 of Yucheon-Eonyang Granites and is partly overlapped by 67~84 of Onjongri Granites. There is clear difference in content of some major and trace elements between Jindong Granites of Cu province and the other granitic rocks of Pb-Zn and Mo provinces. Between these metallogenic provicnes, Cu content is high in Jindong Granites near Haman-Gunbuk mineralized zone, while Pb and Zn are relatively abundant in Yucheon-Eonyang Granites and Mo in Onjongri Granites. Therefore, Jindong Granites of the Cu province are distinguishable by chemical compositions and their related geochemical characteristics from the other Cretaceous granitic rocks of Pb-Zn and Mo provinces. However, the content of Cu and Cl in biotite is applicable to distinguish a productive phase from a barren phase of Jindong Granites, because Cu and Cl show a trend to be concentrated in biotite of Jindong Gratites in the Haman-Gunbuk mineralized zone.

천연 벤토나이트로부터 합성된 제올라이트 A의 특성

이재영,조승래,이홍기,심미자,이주성,김상욱,Lee, Jae-Yeong,Jo, Seung-Rae,Lee, Hong-Gi,Sim, Mi-Ja,Lee, Ju-Seong,Kim, Sang-Uk 한국재료학회 1995 한국재료학회지 Vol.5 No.8

경북 감포지역에서 산출되는 천연 벤토나이트를 이용하여 제올라이트를 합성하였으며 세제용 builder로서 가능성을 연구하였다. 최적의 합성조건은 기질의 몰비가 SiO$_2$/Al$_2$O$_3$=2, $Na_2$O$_3$/Al$_2$O$_3$=1, $H_2O$/A1$_2$O$_3$=30이고 9$0^{\circ}C$에서 3시간 반응시킬 경우였고, 이 조건에서는 A형 제올라이트가 합성되는 것을 XRD를 통하여 확인하였다. 최적 조건에서 합성된 제올라이트의 이온교환능을 측정하기 위하여 경도 40$^{\circ}$Dh의 CaCl$_2$용액과 3$0^{\circ}C$에서 IS분 접촉시킨 결과 264.9mg CaO/g-zeolite 정도로 우수한 값을 나타내었다. 이 시료의 백색도는 89%이었고, 평균 입자크기는 9.95$\mu\textrm{m}$이었다. Synthetic zeolite was prepared by using of natural bentonite from Kampo area and the application of detergent builder was investigated. The optimum synthetic condition was SiO$_2$/Al$_2$O$_3$= 2, Na$_2$O/A1$_2$O$_3$=1, H$_2$O/A1$_2$O$_3$=30 at 90$^{\circ}C$ for 3hr and it was found by XRD analysis that the zeolite synthesized under this condition was type A. When the zeolite A synthesized under the optimum condition was contacted with 40$^{\circ}$Dh CaCl$_2$solution at 30$^{\circ}C$ for 15min, the cation exchange capacity was 264.9mg CaO/g-zeolite. And the whiteness of the sample was 89% and the mean particle size was 9.95$\mu\textrm{m}$.

금속폐광산주변의 토양, 식물 및 하천의 중금속오염에 대한 지화학적 연구 -달성 및 경산광산-

이재영,이인호,이순영,Lee, Jae Yeong,Lee, In Ho,Lee, Sun Yeong 대한자원환경지질학회 1996 자원환경지질 Vol.29 No.5

The tonnage of copper and tungsten produced at Dalseong mine by Taehan Tungsten Mining Company from 1961 to 1971 was 48,704 tons (M/T) of 4 wt.% Cu and 1,620 tons (S/T) of 70wt.% WO, but the mine was closed in 1974. Kyeongsan mine is a small abandoned cobalt mine with no data of production. To investigate the pollution level of the mine areas, soils, plants (Ohwi and Pampanini), stream waters and stream sediments were taken and Fe, Mn, Cu, Pb, Zn, Ni, Co, Cd and Cr were analysed by ICP. Soils are considerably contaminated by the heavy metals related to ore deposits, The heavy metal contents in plants vary with the species and parts of plants. Stream waters are anomalously high in heavy metals in the vicinity of the mines but the contents decrease downstream in the process of dilution and precipiation. However, heavy metal contents increase very high in stream sediments due to precipiation. To protect environmental damages caused by acid mine drainages wetlands must be constructed outside pits, and it is necessary to fill pits with waters, limestone chips and organic materials, which give reducing and alkaline condition to ores. Under the condition pyrite is protected from oxidation and aqueous iron sulphates precipitate to form stable secondary pyrite.

경상분지내 열수광상의 광화작용과 백악기 화강암류의 화학성분 변화와의 관계

이재영,이진국,이인호,김상욱,Lee, Jae Yeong,Lee, Jin Kook,Lee, In Ho,Kim, Sang Wook 대한자원환경지질학회 1994 자원환경지질 Vol.27 No.4

The Cretaceous granitic rocks show differences in rock types and chemical compositions according to metallogenic provinces of copper, lead zinc and molybdenum in the Gyeongsang basin. Jindong granites are of granodiorite~quartz diorite~diorite in Cu-province; Makeunsan/Yucheon-Eonyang granites, granodiorite~granite in Pb Zn-province; Onjeongri-Yeonghae granites, granodiorite~quartz diorite in Mo-province, and there is a trend that productive masses are less differenciated than barren masses in Cu and Pb-Zn provinces whereas productive masses are more differenciated than barren masses in Mo province. Metallogenic provinces are distinguishable by variations of major and trace elements. The Cretaceous granitic rocks are highest in the content of Ca, Mg and other basic major elements and lowest in the content of K and Na in Cu provicne; the variation trends are vice versa in Pb-Zn province. Trace elements such as Rb and Sr show variations related to K and Ca, and metallogenic provinces are also distinguishable by their ratios. The granitic rocks of Mo province have intermediate content of major and trace elements, but are clearly distinguishable from Jindong granites and partly overlapped by Yucheon-Eonyang granites. Chlorine content in biotites is higher in a productive mass than in a barren mass in Cu province. Therefore, the mineralogical and chemical compositions are applicable as geochemical index to distinguish the types of mineralizaion, and productive and barren masses of the Cretaceous granitic rocks in the Gyeongsang basin.

경북지역 폐금속광산이 환경에 미치는 영향

이재영,김종근,이인호,이진국,Lee, Jae Yeong,Kim, Jong Gun,Lee, In Ho,Lee, Jin Kook 대한자원환경지질학회 1993 자원환경지질 Vol.26 No.4

The heavy metal contents are more abundant in stream waters, paddy soils and rice plants in the vicinity of abandoned mines compared to the surrounding areas in the Kyungpook province. However, these contents tend to decrease with distance from mines, and show some variation under different geological and geochemical environments. The Sin-stream waters have high contents of Cu=4.9 ppm, Pb=0.1 ppm, Zn=3.5 ppm and other heavy metals (Ni, Co, Cd) at Dalsung abandoned mine and low contents of Cu=0.4 ppm, Pb=0.1 ppm, Zn=0.1 ppm and other metals= 0.002 ppm in the surrounding area. The high contents decrease in the downstream in the area of calcareous sedimentary rocks. The paddy soils have high contents of approximately Cu=51 ppm, Pb=83 ppm, Zn=211 ppm, and Cd=11.3 ppm in the vicinity of Gunwi abandoned mine but low contents of Cu=4.5 ppm, Pb=2.9 ppm, Zn=60 ppm and Cd=0.4 ppm in the surrounding area. The Dadeog abandoned mine also shows similar trends to Gunwi mine. The contents of heavy metals of rice plants are high in the roots but trends to decrease through stem+leaf and become low in brown rices.

내인성 레트로바이러스의 발현과 질병

이재영,Lee, Jae-Yeong 한국미생물학회 2007 미생물학회지 Vol.43 No.4

레트로바이러스(Retrovirus; RV)의 독특한 특징 중 하나는 프로바이러스의 상태로 숙주세포의 염색체에 삽입되어 숙주세포 유전자의 일부분으로서 다른 숙주세포 유전자들과 함께 다음세대로 유전된다는 것이다. 이러한 독특한 형태의 RV를 내인성 RV (endogenous RV; ERV)라고 하는데, 여러 종류의 내 외적신호에 의해 그자신의 유전자뿐만 아니라 인근한 숙주유전자의 발현에 변화가 일어난다. 사람과 쥐에서는 각각 HERV (Human ERV)와 MuERV (Murine ERV)가 세포 속에 존재하여 이들의 발현 변화가 숙주 생물체에 주로 해롭게 작용하여 질병을 일으키게 된다. 이들 ERV는 생체분자, 세포물질들이 관여하는 기작을 통해 암과 자가면역 반응과 같은 질병을 일으키는데, 이에 수반하여 많은 병리생리적 변화를 가져온다. HERV와 관련된 질병을 앓고 있는 환자들을 위해서는 이러한 질병을 이해하고, 이를 바탕으로 치료요법을 개발하기 위해 여러 단계의 대책들이 고려되어야 한다. One of the chief characteristics of the retrovirus life cycle is the appearance of provirus caused by integration of viral genome into the host cell genome, and its delivery stably to the next generation as a part of host germ line. This stable form is called endogenous retrovirus (ERV) and expressed by exogenous or endogenous factors. HERVs and MuERVs are present in humans and mice correspondingly, and their expressions frequently cause diseases. Several diseases such as cancer, autoimmunity and neurological disorders are related with HERVs. Therefore, various strategies should be established for the development of effective therapies for the suffering patients.

일 종합병원 정신건강의학과 외래환자에서 벤조디아제핀 사용

이재영,강원섭,김종우,김영종,Lee, Jai Young,Kang, Won Sub,Kim, Jong Woo,Kim, Young Jong 대한불안의학회 2015 대한불안의학회지 Vol.11 No.2

Objective : This study examined benzodiazepine prescription patterns of outpatients visiting the psychiatry department in a single general hospital in Korea. Methods : A retrospective descriptive analysis of benzodiazepine prescriptions was performed on a database from 2014 in a general hospital in Korea. We analyzed the following factors of adult outpatients: demographic factors such as sex and age, amount of benzodiazepine prescribed, treatment duration, and diagnosis based on the ICD-10. Results : In 2014, benzodiazepines were prescribed to 46.4% of the outpatients. Percentage of benzodiazepine prescription increased with age and was highest in the age group 40-59 years. Prescription was more prevalent in women and the prescription percentage increased by treatment duration. Patients with the F4 diagnosis (neurotic, stress-related and somatoform disorders) were the most highly prescribed group. For all diagnosis groups, prescription was more prevalent in females or similar for both sexes except for patients with F5 diagnosis (behavioral syndromes associated with physiological disturbances and physical factors), with males being more predominant. Conclusion : Despite the concern regarding the rate of benzodiazepine prescription and administration to geriatric patients, long-term prescription and usage among older patients is still prevalent.

시나리오 기반 하천-제내지 연계 통합수리해석에 의한 홍수위험도 산정

이재영,남명준,권현한,김기영,Lee, Jae Young,Nam, Myeong Jun,Kwon, Hyun Han,Kim, Ki Young 한국수자원학회 2016 한국수자원학회논문집 Vol.49 No.9

본 연구에서는 시나리오 기반의 홍수위험도를 산정하기 위해 하천-제내지 통합수리 해석모형이 적용되었다. 적용대상 유역으로 낙동강 및 금호강이 위치한 대구 성서공단 인근을 선정하여 하천홍수 발생으로 인한 시간별 범람수심 및 범람유속을 산정하였다. 하천-제내지 통합수리해석에 의한 2차원 범람해석은 100년/200년 빈도 신뢰구간 상한치(97.5%)에 의한 제방월류 시나리오와 100년/200년 빈도 신뢰구간 평균치(50%)에 의한 파제 시나리오로 구성하여 수행되었다. 또한 제내지 범람에 의한 위험도 산정을 위해 2차원 홍수범람도로부터 예측된 각 절점에 대한 최대 침수심 및 유속에 대한 정보를 이용하여 등급화를 실시하였다. 본 연구결과는 제방월류 및 파제에 따른 제내지의 비상대처계획(EAP) 수립에 정량적인 근거자료로 제시하는데 매우 유용할 것으로 사료된다. A coupled river-overland hydrodynamic model was applied to estimate flood risk by a scenario-based approach. The study area is Seongseo Industrial Complex in Daegu which is located near Nakdong river and Geumho river. Inundation depth and velocity at each time were calculated by applying a coupled 1D/2D hydrodynamic model to the target area of interest. The 2D inundation analysis for river and overland domain was performed with the scenario-based approach that there are levee overflow against 100/200 year high quantile (97.5%) design flood and levee break against 100/200 year normal quantile (50%) design flood. The level of flood risk was displayed for resident/industrial area using information about maximum depth and velocity of each node computed from the 2D inundation map. The research outcome would be very useful in establishing specified emergency action plans (EAP) in case of levee break and overflowing resulting from a flood.

국내 부지 특성을 고려한 오염토양 정화기술매칭기준안

이재영,이민희,유목련,Lee, Jae-young,Lee, Minhee,Yu, Mokryun 한국지하수토양환경학회 2016 지하수토양환경 Vol.21 No.6

The programmable logic array to match the treatment technology to the soil contaminated site based on the site properties in Korea was developed. Based on the previous technology screening system of FRTR (Federal Remediation Technology Roundtable) in USA, total 9 evaluation factors indicating the site characteristics were used for the technology matching process and 8 factors among them were quantitatively weighed in the order of importance. The class interval for each evaluation factor was linearly distributed to give the weighed score and 8 scores were summed up to prioritize the treatment technology. The optimal treatment technology for a specific site was determined according to the total score acquired from 8 evaluation factors used in this technology matching process. The reliability test for the developed technology matching system was done by using information of two real cleanup sites in Korea, suggesting that this guideline will be available to determine the most effective treatment technology to cleanup the soil contaminated site and also to assist the government or the company to design a successful and cost-effective site cleanup plan in Korea.

겨울철 조건하의 폐기물 매립지 복토층 붕괴에 따른 침출수 변화에 관한 연구

이재영,최상일 ( Jai Young Lee,Sang Il Choi ) 한국물환경학회 1996 한국물환경학회지 Vol.12 No.3

The cover system at municipal and hazardous waste landfills is expected fo perform the following functions: 1) promote surface runoff, 2) the minimum of impede infiltration, and 3) provide a buffer from surface exposure of the waste. However, in spite of cover systems in the landfill is very important, there are not much researches of the landfill cover liner systems. Generally, one of the primary mechanisims of landfill cover liner failure in cold regions is cracking due to the freeze/thaw phenomena. Once the cover liner cracks, performance of these functions ins compromised. Also, The degradation of cover liner systems causes to increase the leachate generation and makes one of the major reason in groundwater contamination. In this investigation, the research performed cover liner behavior in cold weather and actually, allowing inclusion of the field cover systems, clay and layered material profiles. This paper provides the description of testing cover systems, experimental results and a discussion of results of the simulation. The experimental results include rainfall, moisture contents in the clay, leakage data and water balance for each design. The results also indicate the depth of frost penetration for four designs, and a design which consists of soil drainage has superior leakage performance.