동진강 유역의 농업활동에 의한 수질변화와 실측부하량

원찬희,정팔진,김민정,현미희,박정훈,송재환 전북대학교 공학연구원 ( 구 전북대학교 공업기술연구소 ) 2002 工學硏究 Vol.33 No.-

The entire duration of the research work was from December-2000 to July-2002. Site measurement were conducted during various season, in a dry season(December), in rainfall, in seed-sowing time and also collecting data from the rural public organizations related to water management was done and examined during the mid of research work. Generally, the Dong Jin River watershed contains small three Creeks, KoBu, DongJin(including JeongEup and ChilBo, WonPyong). It was further divided into 32 sub-watersheds which comprises of further 5, 18, 9 watersheds in the creeks respectively. Inflow loading to the river was calculated from measurement of general water quality and quantity and these field surveys were made thrice times in agricultural drainage channels, where fertilizers and pesticides leaching from the surface have an direct effect for the deterioration of the several creek and river. Estimation of contaminant loading has been done by using unit loading based on the notification No. 1999 - 143 of the Ministry of Environment. Most of estimated loading data reported during the research work were slightly higher when compared with the notification of the Ministry but they do not have any significant effect. It was assumed that sub-watersheds have considerable field survey loading data, which were affected due to non-point source pollution load as compared to point source. For investigation of surface rainfall ranging from .50㎜ during non-farming or .10 rainfall on the period of farming, BOD loadings in the field during farming showed slightly higher levels in comparison with discharge loadings, T-N also showed the similar trend as discussed earlier.

Cyclosporine과 Ketoconazole의 약물상호작용을 이용한 아토피 피부염 치험 2예

김동원,표형찬,은희철,이유신 大韓臨床藥理學會 1993 臨床藥理學會誌 Vol.1 No.1

도시쓰레기 처리·처분을 위한 발생원별 쓰레기 배출특성에 관한 연구 : 전주시를 중심으로

원찬희,김종신,김민정 全北大學校 附設 都市및環境硏究所 1997 都市 및 環境硏究 Vol.12 No.1

This paper was on the physico-chemical properties of municipal solid wastes generated from Chonju. Each waste sample was analyzed to obtain physical composition, proximate analysis, chemical composition and heavy metal composition, proximate analysis, chemical composition and heavy metal composition. These characteristics were compared with those of residential and commercial area in Chonju. The densities of solids wastes were largely different for each sampling site and the average densities of wastes from high rise apartment building area and commercial area were 0.247ton/㎥ and 0.177ton/㎥, respectively. The average physical composition of wastes from residential area were food waste 54.4∼57.9%, paper 16.9∼17.9%, vinyl plastics 13.1∼9.3%, while that of commercial area was food waste 49.7%, paper 33%, vinyl plastics 7.0%. The average moisture contents of waste from row-rise detected dwellings and high rise apartment building and commercial area were 32.2%, 35%, 35.6% and the volatile solids were 52.8%, 45%, 44.9%, respectively. The average chemical composition of wastes from residential area were carbon 50.1%, hydrogen 6.2%, while that of commercial area was carbon 51%, hydrogen 6.5%.

분류식 하수관거의 도시하수발생 및 하수수질에 관한 연구

원찬희,김종진 全北大學校 附設 都市및環境硏究所 1998 都市 및 環境硏究 Vol.13 No.1

This study was performed in order to estimate the domestic sewage quantities-qualities from separate sewer in Chonju. To investigate the domestic sewage quantities-qualities from separate sewer, sample were collected 2 times during this study period at thirteen points. Flow rate analysis demonstrates a major morning and evening peak between 07:00∼09:00 and 19:00∼22:00, respectively. The concentrations of BOD were in the range of 20∼150㎎/ℓ and 20∼112㎎/ℓ, respectively. The highest concentrations of BOD occurred in the point 5 at first survey. The concentrations of suspended solids were in the range of 18∼330㎎/ℓ and 13∼85㎎/ℓ, respectively. The pollution loading runoff after a rainy season decreased compared to that made before the rainy season. Comparisions with data for sewage plant influents show lower than expected inputs, from domestic sources, of many dilute water often regarded as having a mainly groundwater origin.

새만금수역의 일차생산력에 관한 연구

원찬희,김종신 全北大學校 附設 都市및環境硏究所 2000 都市 및 環境硏究 Vol.15 No.1

Saemankeum Construction Plan, constructing a 33km tide embankment, is a project that builds 28,300ha land and 11,800ha artificial lake. Since there is a high potential that eutrophication could appear at Saemankeum Lake, its construction has attracted a lot of attentions from academic circles as well as the government. Thus, this study is to estimate the primary productivity in Saemankeum area. To investigate the primary productivity, sample were collected 7 times from May to November in 1998 at seven points. The results were as follows ; The concentrations of Chlorophyll-a in this study area were in the range of 5.3∼46.2㎎/㎥. Mean primary productivity in Saemankeum area was estimated to be 161.6∼990.2㎎C/㎡/d which is wuite similar value to the recent results from the Korea. The highest production rate was found at October in 1998. Therefore, trophic level of the study area was ranged as mesotrophic level by Linkens' Method.

소규모 하수처리를 위한 도시 및 농촌하수 특성비교

원찬희,김종신 全北大學校 附設 都市및環境硏究所 1998 都市 및 環境硏究 Vol.13 No.1

This study was carried out in order to estimate the domestic sewage quantities-qualities from combined sewer in Iksan and Hameol. To investigate the domestic sewage quantities-qualities from combined sewer, sample were collected 2 times during this study period at ten points. Flow rate analysis demonstrates a major morning and evening peak between 08:00∼10:00 and 19:00∼22:00, respectively. The concentrations of BOD were in the range of 23∼340㎎/ℓ and 28∼318㎎/ℓ, respectively. The highest concentrations of BOD occurred in the point 1. The concentrations of suspended solids were in the range of 18∼330㎎/ℓ and 13∼85㎎/ℓ, respectively. The pollution loading runoff after a rainy season decreased compared to that made before the rainy season. Comparisions with data for second survey show lower than first survey, from domestic sources, of many dilute water often regarded as having a mainly groundwater origin.

흰쥐 뇌줄기에 분포하는 Nitric Oxide Synthase 신경세포에 관한 면역조직화학적 연구

나준희,허영범,박찬,김정혜,유진화,안희경,이원규 대한해부학회 1999 Anatomy & Cell Biology Vol.32 No.2

해성점토의 물리적 및 화학적 특성에 미치는 염분의 영향

元燦喜,李秉錫 全北大學校 1992 論文集 Vol.34 No.-

The purpose of this study is to investigate the effect of the salt on the physical and chemical properties of marine clay based on the experiments such as specific gravity, grain-size analysis, consistency limit and PH test. The main results of this study are summarized as fellows. 1) The specific gravity of soil containing salt was greater than saltless soil and the specific gravity of soil containing salt was found to be decreased with desalting soil. 2) Due to floculation by the effect of salt, the grain size of marine, soil was found bigger than original grain size and passing percent also was more then 100% 3) The values of liquid were decreased by 7 ∼ 16%, plastic limit 0 ∼ 10%, with the increase of salt content. 4) The PH value was increased by 9.7 as 1% Na_2CO_3 was added. But when Na_2CO_3 was added more than 1%, the increase of PH value was little, with the increase of Na_2CO_3 content. And quantity of NaCl did not appear to influence PH value of sample soil and soil containing Na_2CO_3.

동진강 유역 비점오염원 정밀조사

원찬희,정팔진,김민정,조선영,김세훈,김종천 전북대학교 공학연구원 ( 구 전북대학교 공업기술연구소 ) 2002 工學硏究 Vol.33 No.-

Nonpoint source pollution(NSP) arises due to agriculture activity and it is quite an extensive and complicated problem in order to control and has received a great deal of concern during the recent years, whereas point source are known to originate from an estimated volume of contaminant discharged from a distinguishable source. Extensive research work have been conducted and presented in the past with regard to the various characteristics of watershed on Dong Jin River(DJR), however there are certain drawbacks of existing survey for determining important polluting sources, distribution features of pollutants and estimated load of the organic and nutrients from the creeks. Unfortunately, investigation for loadings originating due to agricultural drainage was not satisfactory, although the regional consideration for DJR across Kim Je Field(KJF) as an agricultural area receives a reasonable source point in the agri-pollution management. Therefore it was necessary to carry out a thorough investigation into the diffuse sources resulting, to form the pollution-developing estimation and to evaluate the output roperties and determining various factors in the generation of non-point pollution. Eventually, this research work would serve as an useful tool for the development of predictive pollution management for DJR. Non-point sources in the present work were classified as municipal non-treated sewage water discharged into the river, loadings through agricultural drainages in the dry/wet field and inadequate treatment of wastewater generated from livestocks. The entire duration of the research work was from December-2001 to July-2002. Site measurement were conducted during various season, in a dry season(December), in rainfall, in seed-sowing time and also collecting data from the rural public organizations related to water management was done and examined and examined during the mid of research work. Similarly, domestic wastewater loadings due to population was based on area unit, as City, Country, Up, Myon, Dong, Ri. The Dong Jin River watershed contains small three Creeks, KoBu(KB), DongJin(DJ, including JeongEup(JE) and ChilBo(CB), WonPyong(WP). It was further divided into 32 sub-watersheds which comprises of further 5,18,9 watersheds in the creeks respectively. The results obtained from research work are presented as follows. Animal productions have marked differences in the rate of pollutant loadings reported in the following sequence: DJ(only CE)>WP>CB>KB, in a case of Korean cow and milk cow. However, it was revealed that WP creek became significantly higher than any other livestocks. According to statistical data for land use, rice field(369.0㎢) and forest(378㎢) have much occupation prior to dry paddies(125.0㎢), residential land(32.0㎢) and others(5.0㎢). Especially, rice fields receives 2.5∼3 times than dry paddies in size.

기저재용 광중합형 글래스아이오노머의 치질 및 복합 레진 인레이에 대한 접착양상

이송희,김동준,황윤찬,오원만,황인남 大韓齒科保存學會 2005 Restorative Dentistry & Endodontics Vol.30 No.3

연구는 간접 복합 레진 인레이 수복 시 기저재로 사용되는 광중합형 글래스아이오노머와 인레이 접착에 사용되는 레진 시멘트간의 접착 전까지의 시간 경과에 따른 전단 결합강도를 측정하고, 상아질과 글래스아이오노머, 글래스아이오노머와 레진 시멘트간 접착계면에 대해 SEM 관찰하였다. 2종의 광중합형 글래스아이오노머 시멘트 Fuji II LC (GC Co, Tokyo, Japan)와 Vitrebond (3M, Paul, Minnesota, U.S.A)의 시편을 제작하였다 5 mmx7 mm의 실리콘 주형에 Artglass (Heraeus Kultzer, Germany)를 이용하여 레진 인레이를 제작하였다. 글래스아이오노머 베이스를 각 각 1시간, 24시간, 1주 및 2주 동안 37℃ 증류수에 보관한 후 Variolink II (Ivoclar Vivadent, Liechtenstein)를 적용하여 인레이를 접착하였다. 만능 물성시험기(Model 4302, Instron, U.S.A)를 이용하여 결합 면에 1 mm/min의 속도로 1000 kg 하중을 가하여 전단 결합강도를 측정하였고, one-way ANOVA를 이용하여 통계 분석하였다. SEM 관찰을 위해 발거된 제 3대구치에 2급 와동을 형성하였고, 기저재로 광중합형 글래스아이오노머 시멘트를 적용하였다. 인레이를 접착한 시편을 수직 절단하여 상아질, 글래스아이오노머, 및 복합레진 인레이 간의 계면을 SEM (JSM-5400 Jeol, Tokyo, Japan) 관찰하였다. 시간 경과에 따른 글래스아이오노머와 복합 레진 인레이 사이의 전단 결합강도는 통계학적으로 유의한 차이가 없었으며, 기저재 재료에 따른 전단 결합강도의 유의한 차이도 없었으며 대부분 시편에서 글라스아이오노머 내부에서 응집 파괴 (Cohesive failure)가 발생하였다. SEM 관찰 시 글래스아이오노머와 상아질 사이에 약 30-20 rn 정도의 간극 (gap)이 형성되었으며 , 글래스아이오노머와 복합 레진 인레이 계면에서는 1시간 후 접착한 시편을 제외하고 간극은 발견되지 않았다. This study was done to evaluate the shear bond strength between light-cured glass ionomer cement (GIC) base and resin cement for luting indirect resin inlay and to observe bonding aspects which is produced at the interface between them by SEM. Two types of light cured GIC (Fuji II LC Improved, GC Co. Tokyo, Japan and Vitrebond, 3M, Paul Minnesota U.S.A) were used in this study. For shear bond test, GIC specimens were made and immersed in 37℃ distilled water for 1 hour, 24 hours, 1 week and 2 weeks. Eighty resin inlays were prepared with Artglass (Heraeus Kultzer Germany) and luted with Variolink II (Ivoclar Vivadent, Liechtenstein). Shear bond strength of each specimen was measured and fractured surface were examined. Statistical analysis was done with one-way ANOVA. Twenty four extracted human third molars were selected and Class II cavities were prepared and GIC based at axiopulpal lineangle. The specimens were immersed in 37℃ distilled water for 1 hour, 24 hours, 1 week and 2 weeks. And then the resin inlays were luted to prepared teeth. The specimens were sectioned vertically with low speed saw. The bonding aspect of the specimens were observed by SEM (JSM-5400, Jeol, Tokyo, Japan) .There was no significant difference between the shear bond strength according to storage periods of light cured GIC base. And cohesive failure was mostly appeared in GIC On scanning electron micrograph, about 30 - 120 ㎛ of the gaps were observed on the interface between GIC base and dentin. No gaps were observed on the interface between GTC and resin inlay.