경주 국가지하수관측소 일자료로 본 경주지진 영향

이진용,Lee, Jin-Yong 한국지하수토양환경학회 2016 지하수토양환경 Vol.21 No.6

Earthquakes of M5.1, M5.8 and M4.5 occurred in September 12 and 19 respectively in Gyeongju, Gyeongbuk Province. Theses earthquakes inflated fears of people and highlighted necessity of detailed countermeasures because we have considered our country is safe to earthquakes. In the meanwhile, earthquake also impacts groundwater and thus it was recently reported that the Gyeongju Earthquakes affected groundwater there. This study evaluates daily groundwater data collected from five national groundwater monitoring stations (Geoncheon, Sannae, Oedong, Yangbuksin, Cheonbuk) in Gyeongju. The analysis revealed that only groundwater level of bedrock monitoring well hosted in andesite exhibited earthquake impact while no wells in the other four stations hosted in sedimentary rocks showed substantial responses to the earthquakes. This may be derived from the difference of seismic velocity of hosting rocks as well as epicenter distance. Special interest on groundwater monitoring is required to predict earthquakes as precursory phenomena.

플라이애쉬를 이용한 환경보존 콘크리트 생산

이진용,Lee, Jin-Yong 한국레미콘공업협회 1999 레미콘 Vol.10 No.-

111명의 야뇨증 환자의 임상고찰

이진용,Lee Jin-Yong 대한한방소아과학회 1993 대한한방소아과학회지 Vol.7 No.1

소아비연(小兒鼻淵)의 병인(病因) 및 치법(治法)에 대(對)한 문헌적(文獻的) 고찰(考察)

이진용,김덕곤,Lee Jin-Yong,Kim Deok-Gon 대한한방소아과학회 1992 대한한방소아과학회지 Vol.6 No.1

과배란유도방법에 따른 난포액내의 Prostaglandin $E_2$ 및 $F_{2{\alpha}}$ 농도의 변동에 관한 연구

이진용,윤보현,김정구,문신용,장윤석,Lee, Jin-Yong,Yoon, Bo-Hyun,Kim, Jung-Gu,Moon, Shin-Yong,Chang, Yoon-Seok 대한생식의학회 1988 Clinical and Experimental Reproductive Medicine Vol.15 No.1

Follicular fluid(FF) prostaglandin $E_2$(PG$E_2$) and $PGF_{2{\alpha}}$ levels were compared in 3 groups of spontaneously ovulatory women undergoing ovulation induction with clomiphene citrate (CC) alone or with human menopausal gonadotropin(hMG) (14 patients), hMG(9 patients), or pure FSH/hMG(11 patients) for the purpose of in vitro fertilization. FF volume aspirated did not differ significantly according to the maturity of the oocyte. According to hyperstimulation regimens, the volume of FF from which preovulatory occytes were obtained was significantly less in the hMG-treated group than in the other groups. In follicles of preovulatory oocytes, FF PG$E_2$ values were significantly lower in the FSH treated group than in the Cc.treated or hMG-treated group, and FF $PGF_{2{\alpha}}$ values were significantly higher in the hMG-treated group than in the CC-treated or FSH-treated group. In follicles of immature or atretic oocytes, there was no significant difference in FF PG$E_2$ and PG$F_{2{\alpha}}$ concentrations of the similar morphology of the oocyte according to hyperstimulation regimens. In all cycles, FF PG$E_2$ and PG$F_{2{\alpha}}$ values of preovulatory oocytes were not significantly different from those of immature oocytes, but those of atretic oocytes were relatively lower than those of fertilizable oocytes and it was statistically signifincant in PG$E_2$ values of CC-treated group. In all treatment groups, FF PG$E_2$ and PG$F_{2{\alpha}}$ levels did not show and close relationship with the success of fertilization in vitro and of pregnancy after embryo transfer. Above results suggested that FF PG$E_2$ and PG$F_{2{\alpha}}$ be involved in oocyte maturation and ovulation, but their relationship with the success of in vitro fertilization was not found.

인간난자의 체외수정 및 배아의 자궁내이식 후 황체기 혈청 난포호르몬 및 황체호르몬의 변동에 관한 연구

이진용,김학순,김정구,문신용,장윤석,Lee, Jin-Yong,Kim, Hak-Soon,Kim, Jung-Gu,Moon, Shin-Yong,Chang, Yoon-Seok 대한생식의학회 1987 Clinical and Experimental Reproductive Medicine Vol.14 No.2

Steroid hormone profiles during luteal phases after in vitro fertilization(IVF) and embryo transfer(ET) have been evaluated in 83 cycles stimulated by pure follicle-stimulating hormone/human menopausal gonadotropin/human chorionic gonadotropin, in which 13 patients became pregnant. Serum estradiol($E_2$) and progesterone($P_4$) levels were determined on days 2, 5, 7 and 9 after laparoscopic follicle aspiration. The follicular $E_2$ peak was slightly higher in pregnancies than in failures. Positive correlations were observed between the follicular $E_2$ peaks and the $P_4$ levels on days 5 and 7 of the luteal phase in pregnancies, but no correlation was found in failures. The $E_2$ and $P_4$ levels on days 5 and 7 of the luteal phase were significantly higher in pregnancies than in failures, but not different on days 2 and 9. Values of the $P_4/E_2$ ratio were similar between the two groups. The luteal phase durations were 12 to 19 days and no correlation was observed between the lengths of luteal phase and the luteal $E_2$ or $P_4$ concentrations. These data suggest that high $P_4$ levels in the mid-luteal phase, which have positive correlations with the follicular $E_2$ peaks, might have a favorable influence on the pregnancy success in human IVF.

입상 활성탄을 이용한 형광물질 추적자시험 적용성 연구

이진용,황현태,이명재,김용철,염병우,Lee, Jin-Yong,Hwang, Hyoun-Tae,Yi, Myeong-Jae,Kim, Yong-Cheol,Yum, Byoung-Woo 한국지하수토양환경학회 2007 지하수토양환경 Vol.12 No.4

최근에 형광물질을 이용한 추적자 시험이 빈번해지고 있다. 본 연구에서는 형광물질 추적자 시험시 농도측정 방법으로서 입상 활성탄을 이용하는 방법의 적용가능성을 실내 및 현장실험을 통해 평가하였다. 실내실험 결과 로다민 WT 및 우라닌 개별용액의 경우 활성탄 흡착 농도는 실제 표준농도와는 일부 차이가 있지만 각 표준농도와 선형성은 매우 뛰어난 것으로 나타났다. 또한 $10{\mu}g/L$ 이상의 형광물질 농도에서는 활성탄의 적용성이 뛰어났다. 한편 두 형광물질을 혼합한 경우에는 간섭의 영향으로 활성탄 적용성이 떨어졌다. 실제 현장에서 활성탄을 이용하여 추적자 시험을 한 결과, 통상적으로 수행하는 직접적인 물시료 채취분석법과 비교하였을 때 활성탄을 이용한 흡착방법도 충분히 현장 적용성이 있으며 저농도에서는 습식 그리고 고농도에서는 건식으로 분석한다면 보다 정확한 형광물질 농도측정이 되는 것으로 나타났다. 특히 오염물질 확산 평가 등이 목적이 아니라 추적자 물질의 도달확인(즉 수리적 연결성 진단)이 주요 목적이고 추적자시험의 예상 소요기간이 길다면 활성탄을 활용한 방법은 매우 비용경제적일 것으로 사료된다. In recent tests using tracer have been frequently conducted by fluorescent tracers. In this study, granular activated charcoal (GAC) as a detector for the fluorescent tracers (rhodamine WT and uranine) was investigated through laboratory and field tests. In the laboratory tests, tracer concentrations of rhodamine WT and uranine determined by the GAC were slightly different from those of standard solutions but they were excellent in linearity. Results show that GAC is excellent as tracer detector when concentration of the fluorescent tracers is greater than 10 & micro; g/L whileas no obvious differences in mixed solutions of the two tracers due to interferences. Compared to conventional methods of water sampling, field results shows a high potential of GAC as a tracer in the field. Our results also show that wet analysis is better for the lower concentrations of tracers whileas dry analysis is good for high concentrations of tracers. This study demonstrates that fluorescent tracer detection using the GAC is very useful and economical for a hydraulic connection between target areas and very longer period of the tracer test.

수질원격감시체제(TMS) 구축계획

이진용,Lee, Jin-Yong 환경보전협회 2006 환경정보 Vol.28 No.365

$Na_2SO_4$가 시멘트-플라이애쉬 페이스트 및 콘크리트 강도에 미치는 영향

이진용,배성용,송종택,Lee, Chin-Yong,Bae, Sung-Yong,Song, Jong-Taek 한국콘크리트학회 1999 콘크리트학회지 Vol.11 No.2

플라이애쉬 대체량에 따른 변화, 양생방법이 미치는 영향 그리고 조기강도를 높이기 위해 첨가된 화학 혼화제가 시멘트-플라이애쉬 페이스트의 특징 및 콘크리트 강도에 미치는 영향을 알아보았다. 시멘트-플라이애쉬 페이스트의 압축강도는 시멘트로만 만들어진 페이스트보다 낮았으며, 플라이애쉬의 대체량이 증가할수록 강도차이가 증가하였다. 그러나 증기양생시 시멘트-플라이애쉬 페이스트는 수중양생시보다 압축강도가 증가하였으며, 특히 조기강도가 크게 향상되었다. 조기강도 증진을 목적으로 혼입한 활성화제($Na_2SO_4$)의 첨가는 시멘트-플라이애쉬 페이스트 조기강도를 증진시켰으며, 또한 $Na_2SO_4$와 플라이애쉬를 30% 함유한 플라이애쉬 콘크리트의 강도도 월등히 향상되었다. It was investigated to evaluate the characteristics of cement-flyash paste which was affected the replacement level, curing method and chemical admixtures. The strength of cement-flyash paste was lower than that of cement paste only and the differences increased with increasing the replacement level. However, in steam curing, the strength of cement-flyash pastes was improved and specially, the early strength was effectively increased. The inclusion of $Na_2SO_4$ increased the early strength of cement-flyash paste. In addition, the strength of concrete including 30% of fly ash and $Na_2SO_4$ has improved and obtained the highest strength compared to other concrete mixes.

곽향정기산가미방(藿香正氣散加味方)이 고지방식이(高脂肪食餌)로 유식(誘導)된 흰쥐의 체지방에 미치는 영향(影響)

이진용,이훈,Lee, Jin-Yong,Lee, Hoon 대한한방소아과학회 2007 대한한방소아과학회지 Vol.21 No.2

Objetives This experimental study is designed to investigate the effects of kwakhyangjungkisangamibang extract on the changes of adipose tissues, serum insulin and leptin levels in rats induced by a high fat diet. The leptin has been proposed to be involved in the role of food intake and energy expenditure. Methods During the 8 weeks of experimental period, male Sprague-Dawley rats were fed on the 2 different diets: the normal diet AIN-76A and high fat(beef tallow) diet ad libitum, of which 40% of the calories intake was fat. 9 rats in the control and high fat diet group were killed for the baseline experiment at 4 weeks of age. The high fat diet group was divided into three groups: control group, experimental group I(high fat diet plus kwakhyangjungkisangamibang extract), and experimental group II(high fat diet plus mahuang). The body weight, hypodermal fat tissue, serum lipid profile, insulin and leptin levels were measured after the administration of the high fat diet and extract. Results 1. The body weight was decreased in experimental group II, but there was not a significance difference compared to the control group. 2. The peritoneal, visceral, and hypodermal adipose tissue was decreased in experimental group I, but there was not a significance difference compared to the control group. 3. The lipid profile was decreased in experimental group I, but not in group II. 4. The insulin concentration was increased in experimental group I and II, but there was not a significance difference compared to the control group. 5. The leptin level was increased significantly in experimental group I(p<0.05) and II(p<0.01) compared to the control group. Conclusion The results of this study indicate that kwakhyangjungkisangamibang has an effect on the regulation of obesity.