거창지역 농촌생활용수 암반지하수의 수질과 분포암석과의 관계연구

박현주,박종남,이재경,박인석 東亞大學校 環境問題硏究所 2005 硏究報告 Vol.27 No.1

As of the end of 2001, even though about 89% of the population throughout the country are blessed with water service, areas of seashore, island and parts of inland are still in difficulties with drinking water. For this reason, the water resources project for stable supply by developing groundwater has been conducted since 1992, under the auspices of Ministry of Agriculture & Froestry. As of 2003, a total of 594 project areas have been completed in the Gyeongsang Province by the KARICO Gyeognam Branch. Among these, 46 samples in the Geochang area developed since 1999, were chosen for chemical analysis of groundwater developed in varieties of rock. As a result, there appears excess fluorine in the granite and gneiss in this area. Correlation analysis between rock type and groundwater chemistry show that the fluorine has high correlation with Fe and aluminum in diorite, and nitrate nitrogen in the andesite rock, while hardness, total solids and SO^(2-)_(4) have high correlations each other not only in sedimentary rocks but also in all other types of rocks. It has been known that the TDS (fluorine, hardness, total solids, and SO^(2-)_(4)) of groundwater increase with depth due to water rock interaction by increasing the amount of pumping rate at the well. However, in this study, the well depth and groundwater chemistry show little correlation in between. This may be partly due to limited number of samples used in the study with a total of 46 points suitable for drinking water. It may be thought that well distributed sampling points with more samples throughout the whole area should be collected for analysis, so as to increase reliability in the result.

합천지역 농촌생활용수 암반지하수의 수질과 분포암석과의 관계연구

박현주,박종남,박인석,이재경,한원태 동아대학교 환경문제연구소 2006 硏究報告 Vol.28 No.1

As of the end of 2001, even though about 89% of the population throughout the country are blessed with water service, areas of seashore, island and parts of inland are still in difficulties with drinking water. For this reason, the water resources project for stable supply by developing groundwater has been conducted since 1992, under the auspices of Ministry of Agriculture & Forestry. As of 2003, a total of 594 project areas have been completed in the Gyeongsang Province by the KARICO Gyeongnam Branch. Among these, 57 samples in the Hapcheon area developed since 1999, were chosen for chemical analysis of groundwater developed in varieties of rocks. As a result, there appears excessive fluorine in the granite, gneiss and diorite in this area. Correlation analysis between rock type and groundwater chemistry shows that the fluorine has high correlation with Fe and aluminum in diorite, and nitrate nitrogen in the andesite rock, while hardness, total solids and SO4+ have high correlations each other not only in sedimentary rocks but also in all other types of rocks. It has been known that the TDS (fluorine, hardness, total solids, and SO4+) of groundwater increase with depth due to water- rock interaction by increasing the amount of pumping rate at the well. However, in this study, the well depth and groundwater chemistry show little correlation in between. This may be partly due to limited number of samples used in the study with a total of 46 points suitable for drinking water. It may be thought that well distributed sampling points with more samples throughout the whole area should be collected for analysis, so as to increase reliability in the result.

창녕지역 농촌생활용수 암반지하수의 수질과 분포암석과의 관계연구

박현주,박종남,이재경,박인석 東亞大學校 環境問題硏究所 2005 硏究報告 Vol.27 No.1

As of the end of 2001, even though about 89% of the population throughout the country are blessed with water service, areas of seashore, island and parts of inland are still in difficulties with drinking water. For this reason, the water resources project for stable supply by developing groundwater has been conducted since 1992, under the auspices of Ministry of Agriculture & Froestry. As of 2003, a total of 594 project areas have been completed in the Gyeongsang Province by the KARICO Gyeongnam Branch. Among these, 60 samples in the Changyeong area developed since 1999, were chosen for chemical analysis of groundwater developed in varieties of rock. As a result, there appears excess fluorine in the granite, gneiss and diorite in this area. Correlation analysis between rock type and groundwater chemistry show that the fluorine has high correlation with Fe and aluminum in diorite, and nitrate nitrogen in the andesite rock, while hardness, total solids and SO^(2-)_(4) have high correlations each other not only in sedimentary rocks but also in all other types of rocks. It has been known that the TDS (fluorine, hardness, total solids, and SO^(2-)_(4)) of groundwater increase with depth due to water rock interaction by increasing the amount of pumping rate at the well. However, in this study, the well depth and groundwater chemistry show little correlation in between. This may be partly due to limited number of samples used in the study with a total of 46 points suitable for drinking water. It may be thought that well distributed sampling points with more samples throughout the whole area should be collected for analysis, so as to increase reliability in the result.

<i>In vitro</i> and <i>in vivo</i> evaluation of a novel polymer-free everolimus-eluting stent by nitrogen-doped titanium dioxide film deposition

Park, Dae Sung,Bae, In-Ho,Jeong, Myung Ho,Lim, Kyung Seob,Sim, Doo Sun,Hong, Young Joon,Lee, So-Youn,Jang, Eun Jae,Shim, Jae-Won,Park, Jun-Kyu,Lim, Han Chul,Kim, Han Byul Elsevier 2018 Materials Science and Engineering C Vol.91 No.-

<P><B>Abstract</B></P> <P>Inflammation and thrombosis are linked to the use of polymer-based drug-eluting stents (DES). The aim of this study was to develop a polymer-free everolimus (EVL)-eluting stent using nitrogen-doped titanium dioxide (N-TiO<SUB>2</SUB>) and verify its efficacy by <I>in vitro</I> and <I>in vivo</I> assessment in a porcine coronary model. Various analytical approaches such as scanning electron microscopy and atomic force microscopy, electron spectroscopy, Fourier transform infrared spectrometry and contact angle measurement were employed for the characterization. As a part of biocompatibility assessment, platelet adhesion and smooth muscle cell (SMC) proliferation were examined. Bare metal stent (BMS), N-TiO<SUB>2</SUB> stent, everolimus-eluting N-TiO<SUB>2</SUB> (N-TiO<SUB>2</SUB>-EVL) stent, and commercialized EVL-eluting stent (EES) were randomly placed in forty coronary arteries in twenty pigs. After four weeks of implantation, the stents were subjected to histological and quantitative analysis. The N-TiO<SUB>2</SUB> film used in this study was well coated without any cracks or peeling. Surface hydrophilicity (88.8% of angle decrement) could be associated with the decrease in surface roughness post N-TiO<SUB>2</SUB> deposition (37.0%). The platelet adhesion on the N-TiO<SUB>2</SUB> surfaces was less than that on the BMS surface. The proliferation of SMC was suppressed in the N-TiO<SUB>2</SUB>-EVL group (30.2%) but not in the BMS group. In the animal study, the percent area restenosis was significantly decreased in the N-TiO<SUB>2</SUB>-EVL group compared to that in the BMS group. The results (BMS; 47.0 ± 11.00%, N-TiO<SUB>2</SUB>-EVL; 31.7 ± 10.50%, and EES; 29.1 ± 11.21%, <I>n</I> = 10, <I>p</I> < 0.05) were almost at par with those of the commercialized EVL-eluting stent. The introduction of N-TiO<SUB>2</SUB> deposition during fabrication of polymer-free DES may be an efficient accessorial process for preventing in-stent restenosis and thrombosis.</P> <P><B>Highlights</B></P> <P> <UL> <LI> N-TiO<SUB>2</SUB> surfaces can help to reduce the platelet adhesion. </LI> <LI> In porcine model, N-TiO<SUB>2</SUB> everolimus decreased in-stent restenosis and fibrin deposition. </LI> </UL> </P>

포스트 코로나 시대 도시주거지 근린공원의 행태지원성 변화가능성에 관한 연구

박인경(Park, In-Kyung),유다은(Yoo, Da-Un) 대한건축학회 2021 대한건축학회 학술발표대회 논문집 Vol.41 No.2

Neighborhood park in urban residential area provides easier access to everyday life and works as important leisure space. However, due to spatial limitations, it is not enough to satisfy the behavioral needs of various users. The purpose of this study is to analyze the affordances that can be expected in neighborhood parks that are readily accessible on a daily basis. This study derives the framework of analysis on various usage behavior and affordance of urban parks. Usage behavior was classified as static, dynamic and social exchange behaviors. Finally, this study can be used as an initial data in the planning and design research for neighborhood parks that might reflect the behavior and needs of park users.

만성 궤양성 대장염의 추적관찰 - 단기적 치료 반응 및 재발율을 중심으로

장동경(Dong Kyung Chang),이국래(Kook Lae Lee),김재규(Jae Gyu Kim),김용태(Yong Tae Kim),정현채(Hyun Chae Jung),송인성(In Sung Song),최규완(Kyoo Wan Choi),김정룡(Chung Young Kim),박재갑(Jae Gahb Park),이풍렬(Poong Lyul Rhee),최상운(Sa 대한소화기학회 1994 대한소화기학회지 Vol.26 No.6

N/A Our retrospective study on 240 cases with chronic ulcerative colitis in Seoul National Uni- versity Hospital spanning from January,1975 to December,1993 revealed the following results. According to the extent of disease, there was 27.5% in proctitis, which was more frequent than that of the previous domestic reports, 15.8% in distal, 22.9% in left and 31.7% in exten- sive colitis. According to the severity of disease, there was 47.5% in mild, 32.9% in moderate and 19.6% in severe disease. There was a positive correlation between severity and extent of disease. The extraintestinal complications were not related with the extent, or severity. Howev- er 3 cases(1.3%) of toxic megacolon appeared in moderate or severe extensive colitis, one of which progressed to perforation. Two cases(0.8%) of mortality were noticed, one caused by perforation, the other by operation related complication. There was not a single case of colon cancer developed during follow up period. Most cases showed excellent short term response to medical treatment; the symptomatic remission rates were 90.3%, 85.7%, 72.9% and 58.9% in order of proctitis, distal, left and extensive colitis, and the endoscopic remission rates were 78.8%, 50.0%, 59.1% and 30.0% respectively. Higher remission rates corresponded with lower extent of the disease. According to the severity, the symptomatic remission rates of milder dis- ease were significantly higher. The cumulative relapse rates were 38.7% in 1 year, 62.4% in 2 years, 73.3% in 3 years and 81.9% in 5 years, which were not related to the extent but in- creased according to the severity. The cumulative operation rates were 5.0% in 1 year, 7.6% in 2 years, 10.2% in 3 years and 15.9% in 6 years. The emergency operation accounted for only 22.2% of all operation and the others were elective ones. The most frequent indication of surgery was medical intractability which was determined after mean 35 days of intensive med- ical therapy. We concluded that severity and extent of ulcerative colitis had predictive value of the responses to medical treatment or relapses, furthermore despite the high relapse rates, medical therapy was the first line treatment because of its high remission rates on a short- term base. (Korean J Gastroenterol 1994; 26: 907 918)

축구선수의 Detraining과 Retraining이 혈청지질 및 호르몬농도에 미치는 영향

정정화,박재현,채종훈,성혜련,황지인,윤미숙,노금선,윤종관,윤영학,노순덕,정경숙,박일규,김은희,박현태,박상갑 대한스포츠의학회 1999 대한스포츠의학회지 Vol.17 No.1

The purpose of this study was to investigate the effects of detraining and retraining on serum lipid and hormones in soccer players. Subjects were seven male high-school soccer players. V˙O_2max was determined for each subjects by administering a treadmill test(initial speed: 90m/min, grade: 5%, increasing speed per 3 min: 30m/min). Serum lipid(T-C, TG, HDL-C LDL-C) and hormones(epinephrine, norepinephrine, growth hormones, cortisol) were assayed pre and post detraining in 10, 20, 30 days after retraining. The repeated ANOVA was used to determine significant differences. The 0.05 level of significance was as critical level for the study. The results of the study were as follows: 1. V˙O_2max(ml/min) were 3576.3±204.2ml/min pre detraining, 3234.1±198.9 ml/min post detraining. There are significant(p<.05) difference between pre and post detraining. In 10, 20, 30 days after retraining, V˙O_2max(ml/min) were 3601.4±170.9 ml/min. There were significantly(p<.05) increased in retraining periods. 2. V˙O_2max(ml/kg/min) were significantly(p<.05) decreased from 62.3±2.9 ml/kg/min to 55.9±4.7 ml/kg/min in detraining. In 10, 20, 30 days after retraining, V˙O_2max(ml/kg/min) were 62.4±3.4ml/kg/min, 62.7±2.3ml.kg/min, 67.3±7.2ml/kg/min respectively. There were significantly(p<.05) increased in retraining periods. 3. T-C were significantly (p<.05) increased from 166.6±8.5mg/dl to 175.3±10.3 mg/dl in detraining. In 10, 20, 30 days after retraining, T-C were 160.1± 3.2mg/dl, 156.7±3.7mg/dl, 140.3±9.0mg/dl. There were significantly(p<.05) decreased in retraining periods. 4. HDL-C were 61.4±6.6mg/di pre detraining, 5.3±6.6mg/dl post detraining. There are significant(p<.05) difference between pre and post detraining. In 10, 20, 30 days after retraining, HDL-C were 56.9±7.1mg/dl, 56.4±9.2mg/dl, 57.7±9.1mg/dl respectively. There were no significant difference in retraining periods. 5. The hormones(epinephrine. norepinephrine, growth hormone, cortisol) were changed as same patterns. Epinephrine were 26.0±7.0[g/ml pre detraining, 24.6±3.2pg/ml post detraining. In 10, 20, 30 days after retraining, epinephrine were 26.9±5.6pg/ml, 30.6±6.2pg/ml, 29.4±5.6pg/ml respectively. There were no significant difference in retraining periods. In conclusion, HDL-C, epinephrine, norepinephrine, growth hormone and cortisol were decreased, T-C, LDL-C and TG were increased in detraining. But HDL-C, epinephrine, norepinephrine, growth hormone and cortisol were increased, T-C, LDL-C and TG were decreased in retraining.

Uncoupling Protein 3의 골격근 세포내 과발현이 OLETF 백서 및 배양된 골격근 세포에서 포도당대사에 미치는 영향

한정희,박혜선,고정민,김하영,강호경,이인규,박중열,홍성관,이재담,이기업 대한당뇨병학회 2002 Diabetes and Metabolism Journal Vol.25 No.6

연구배경:Uncoupling protein(UCP)는 미토콘드리아의 내막에 위치하는 단백질로 세포내의 과다한 에너지를 열로 발산시키는 기능을 가진다. 최근 동물의 갈색지방조직에만 존재하는 UCP와 유사성을 가진 아형들(UCP2,3)이 사람에게도 존재함이 알려져 큰 관심을 끌도 있는데 이중 UCP3는 그 발현이 골격근세포와 갈색지방조직에만 국한된다. 본 연구에서는 UCP3가 체내 인슐린 감수성을 결정하는데 가장 중요한 조직인 골격근에 국한되어 발현되는 점에 착안하여 UCP3를 골격근세포에 과발현시켰을 때 포도당 대사에 어떠한 영향이 나타나는 지를 조사하였다. 방법:25주령의 8마리의 OLETF 백서를 대상으로 하여 4마리는 골격근에 adenovirus 2mL(1×10¹²pfu/mL)를 주사하여 대조군으로 하였고 4마리는 골격근에 재조합법으로 제작된 adenovirus­UCP3 2mL(1×10¹²pfu/mL)를 주사하였다(UCP3 과발현군). UCP3를 투여한 백서에서 먹이섭취가 증가하는 경향이 있어 그 전날 대조군이 먹은 야의 먹이만큼 투여하였다. 골격근에 adenovirus를 주사한 10일 후에 euglycemic hyperinsulinemic clamp를 시행하였다. Adenovirus­UCP를 C2C12 골격근 세포에 transfection시켜 UCP3를 C2C12 골격근 세포에 transfection시켜 UPS3­C2C12를 만들고 C2C12 골격근 세포와 UPS3­C2C12 골격근 세포에서 포도당 수송 및 당원합성을 측정하였다. 결과:UCP3 과발현 OLETF에서 체중이 감소하는 경향을 보였고 인슐린 감수성이 증가하였다. C2C12세포에서 기저상태 포도당 수송은 1.28±0.17μmol/L/min였고 100nM 인슐린으로 2시간 처리한 후 2.67±0.20 μmol/L/min로 증가하였다. UCP3­C2C12 세포에서는 기저상태 포도당 수송이 3.98±0.13μmol/L/min로 증가되었고 인슐린 처리 후 5.74±0.44μmol/L/min로 증가하였다. 인슐린을 처리한 UCP3­C2C12 세포에 P13K 억제제인 wortmannin을 첨가하였을 때 포도당 수송활성이 3.81±0.20μmol/L/min로 감소하였다. 기저상태 당원합성은 C2C12 세포에서 0.25±0.01μmol/L/min였고 인슐린 처리 후 0.45±0.01μmol/L/min로 증가하였다. UCP3­C2C12 세포에서는 기저상태 당원합성이 0.62±0.01μmol/L/min였고 인슐린 처리 후 1.26±454μmol/L/min로 증가하였다. UCP3­C2C12세포에 wortmannin을 첨가하였을 때 당원합성율이 0.80±0.04μmol/L/min로 감소하였다. 결론:UCP3 과발현이 OLETF 백서에서 인슐린 감수성을 증가시켰고 골격근세포에서 포도당 수송 및 당원합성을 증가시켰다. wortmannin을 첨가하였을 때 포도당 수송 및 당원합성이 감소함으로 보아 이 과정이 인슐린 신호전달체계인 P13K에 일부 의존함을 알 수 있었다. Background : UC P3 is a mitochondrial membrane protein expressed selectively in the skeletal muscle and brown adipose tissue. Since the skeletal muscle is the main organ determining insulin sensitivity in the body, it was hypothesized that UCP3 overexpression in skeletal muscle cells would improve glucose metabolism. Methods : An adenovirus-UCP3 was produced by a recombinant DNA method. OLETF rats were divided into 2 groups. Four rats were injected with the adenovirus-UCP3 (UCP3 group) and others were injected with the adenovirus(control group) in the skeletal muscle. The UCP3 group was provided with the same quantity of food as that consumed by the control group on the previous day. Insulin sensitivity was evaluated by the euglycemic hyperinsulinemic clamp method. In a separate experiment, glucose transport and glycogen synthesis we evaluated in C2C212 cells transfected with ether an adenovirus or the adenovirus-UCP3. Results : The insulin sensitivity improved significantly and the body weight decreased in the UCP3 group. The glucose transport and glycogen synthesis were higher in the UCP3-C2C12 skeletal muscle cells at the basal state. After insulin treatment, glucose transport and glycogen synthesis were also higher in the UCP3-C2C12 cells but the increments were reduced after treatment with wortmannin, a PI3K inhibitor. Conclusion : Insulin sensitivity was higher in the UCP3-overexpressed OLETF rats in the in vivo study. UCP3 transfection also increased glucose transport and glycogen synthesis in the cultured skeletal muscle cells by a PI3K dependent mechanism(J Kor Diabetes Asso 25 :460~468, 2001).

Prevalence of Latent Tuberculosis Infection among Health Care Workers in South Korea: A Multicenter Study

( Kyung Wook Jo ),( Yoon Ki Hong ),( Jae Seuk Park ),( In Gyu Bae ),( Joong Sik Eom ),( Sang Rok Lee ),( Oh Hyun Cho ),( Eun Ju Choo ),( Jung Yeon Heo ),( Jun Hee Woo ),( Tae Sun Shim ) 대한결핵 및 호흡기학회 2013 Tuberculosis and Respiratory Diseases Vol.75 No.1

Background: We investigated the prevalence of latent tuberculosis infection (LTBI) among the health care workers (HCWs) and analyzed its risk factors in South Korea. Methods: A standard questionnaire regarding the baseline demographics and risk factors for LTBI was given to each participant and tuberculin skin test (TST), QuantiFERON-TB GOLD In-Tube (QFT-GIT) assay, and chest radiography were performed. Results: A total of 493 participants, 152 (30.8%) doctors and 341 (69.2%) nurses were enrolled in eight tertiary referral hospitals. The mean age of the subjects was 30.6 years old, and 383 (77.7%) were female. Of the 152 doctors, 63 (41.4%) and 36 (23.7%) were positive by TST and by QTF-GIT, respectively, and among the 341 nurses, 119 (34.9%) and 49 (14.4%) had positive TST and QFT-GIT results, respectively. Overall, the agreement between the two tests was 0.22 by the chance corrected proportional agreement rate (kappa coefficient) in 493 subjects. Experience of working in tuberculosis (TB)-related departments was significantly associated with positive LTBI test results by QFT-GIT assay, not by TST. In multivariate analysis, only age was independently associated with increased risk of a positive TST result, while age and experience of working in TB-related departments (odds ratio, 2.29; 95% confidence interval, 1.01-5.12) were independently associated with increased risk of a positive QFT-GIT result. Conclusion: A high prevalence of LTBI was found among South Korean HCWs. Considering the association between the experience of working in TB-related departments and high risk of LTBI, QFT-GIT may be a better diagnostic test for LTBI than TST in HCWs.

중금속오염을 고려한 온산만 조간대 및 아조대의 무척추동물 군집분석

박중기,이인숙,박경숙,송준임,최병래,노분조 이화여자대학교 환경문제연구소 1997 이화환경연구 Vol.1 No.-

한국 동해연안의 하나인 온산만 지역의 해양오염 실태를 파악하기 위해 저서동물 군집구조에 대한 정성, 정량적 분석을 실시하였다. 분석결과 조사지역별 습중량-개체수의 누적 κ-dominance curve 변화양상을 근거로 판단해 분석한 결과, 온산만의 내만에 위치한 춘도는 여름, 겨울 오후에 ()어서 오염지역으로, 대조군인 당사는 비오염지역,()각각 판정되었다. 이외에도 조사지역별 출현() () 있어서 대조구인 당사지역에 비해 춘도의 생물상이 ()대적으로 빈약하였으며 연체류중 패각만 채집된 ()에 있어서도 각각 춘도에서 16종, 당사에서는 (0로 커다란 차이를 나타내었다. 온산만에 대한 이러한 저서동물 군집결과는 이 주변의 비철금속 및 석유화학 공업단지로부터 ()입된 중금속으로 인하여 해수 및 생물농축량이 누적됨으로써 나타나는 중금속의 높은 농도와 관련이 있을 것으로 추측된다. The qualitative and quantitative analyses of macrozoobenthic communities sampled from Onsan bay of the eastern coast of Korea were conducted, in this study, to investigate the status of marine pollution. In each survey site, judging from the results of the combined κ-dominance curve for species biomass and individual numbers, it may be assessed that Chundo island, located in innerside of Onsan bay, was in the state of polluted condition both in the summar and winter seasons; on the other hand, Tangsa, the control site of this study, was in the state of unpolluted condition. The species composition of the Chundo island, in addition, was rather lower than that of the Tangsa in richness and showed critical differences with the control site in the number of molluscan species collected as dead shell(16 spp. from Chundo island; 2spp. from Tangsa respectively) It is inferred that the resultant macrozoobenthic community structure of the Onsan bay was related to the high concentration of heavy metals in seawater and bioaccumulation, attributed to the influx of the heavy metals from the surroundings, the nonferrous and the petrochemical industrial complex.