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전인배,김효준,지홍기,이순탁 영남대학교 환경문제연구소 2000 環境硏究 Vol.19 No.2
본 연구는 도서지역의 용수공급을 위한 대안으로 제시되고 있는 해수의 담수화 방안, 상수도 이용방안 및 우수의 생활용수 이용방안 중에서 경제적, 지형학적으로 이들 지역에 가장 적합한 대체 수자원으로서 우수이용 시스템을 제시하고 재래적인 우수이용방법을 개선하는 것을 연구의 목적으로 하고 있다. 이를 위하여 제주도지역을 대상지역으로 선정하고 그 대상지역의 실제 강우 및 생활용수자료를 개별 우수이용 시스템과 공동 우수이용 시스템에 대한 시뮬레이션을 통하여 본 시스템을 설계하였고 Bayes-Markov분석을 통하여 대상지역 강우량의 사후확률을 결정하여 운영자의 의사결정 기준으로 제공함으로써 안정적으로 시스템을 운영할 수 있도록 하였다. The purpose of this study is to propose rainwater harvesting system that is the most appropriate with the economical and topographical features among the usage of sea water, reuse sewage, and rainwater. Improving the inefficient domestic usage of rainwater in island is the anther purpose of this study. To accomplish this purposes, Cheju island was chosen as case study and the design for the roof area and tank size of rainwater harvesting system were performed by the result of the simulation of the private rainwater harvesting system and the public rainwater harvesting system with the actual precipitation and domestic water data. The posterior probabilities of rainfall at study area have been carried out by the Bayes-Markov analysis to offer the standard of decision making.
베효준,조연상,김동호,서영백,박흥식 동아대학교 생산기술연구소 2000 生産技術硏究所硏究論文集 Vol.5 No.2
The wear particles is released from the moving surfaces in gear systems of transmission and its morphology is directly related to the damage and failure to gear systems from which the particles originated. It is the effective method to diagnosis damage process of gear systems of automobile transmission to observe wear particle in gear oil. We tested with new transmission and took out gear oil according to drive distance. To be applied to damage diagnosis of gear system in transmission of automobile, 4 shape parameters of wear particles in gear oil were calculated and wear volume were presumed with the image processing system.
유압피스톤 모터용 Slipper-pad의 손상상태 해석
배효준,조연상,박흥식 東亞大學校 大學院 2000 大學院論文集 Vol.25 No.-
This papaer was undertaken to do morphological analysis of wear particles for sliding members hydrauric rotary acuator. The lubricating wear test was performed under different experimental conditions using the wear test device and wear specimens of the pin on disk type was rubbed in parafinic base oil by three kinds of lubricating materials, varying applied load, sliding distance. The four shape parameters (50% volumetric diameter, aspect, roundness and reflectivity) are used for morphological analysis of wear particles. The results showed that the four shape parameters of wear particles depend on a kind of the lubricating materials. It was capable of presuming wear volume for three kinds of materials on driving time.
Roxythromycin-tylosin-furaltadone 합제의 닭 유래 세균에 대한 시험관내 항균효과
김지영,채미경,윤효인,서상희,박배근,김현수,전무형 충남대학교 수의과대학 동물의과학연구소 2003 動物醫科學硏究誌 Vol.11 No.-
In vitro antimicrobial susceptibility of roxythromycin (Rx), tylosin (Tyl), erythromycin (EM) and furaltadone (Fur) was studied, either by the single type or the combinated type of Rx-Tyl-Fur (RTF) against E. co1i (30 strains), Staph. aureus (20 strains) and Mycoplasma gallisepticum (5 strains) that are the major pathogens in poultry farm. The paper disk diffusion and MIC tests were applied. In screening test by paper disk diffusion method, the single types of antibiotics showed the sensitivity against 55 strains of bacteria in order of Fur, EM, Rx and Tyl. The combinated RTF showed the higher rate of sensitivity (80∼83.3% at 64㎍/disk, 60-75% at 32㎍/disk) and wider range of growth inhibiting zone (19.6±3.7-24.8±4.7mm) than those of the single drugs. In MIC test, the sensitivity against the 55 strains appeared in order of Fur. EM, Rx and Tyl as similar to those of paper disk diffusion method. The MIC ranges of RTF were 0.125∼16㎍/ml for E. coli, 0.25∼16㎍/ml for Staph. aureus and 1-8㎍/ml for Myco. gallisepticum, showing evidently lower than those of the single types. The MIC_(50) and MIC_(90) of RTF were estimated l∼4㎍/ml and 8∼16㎍/ml, respectively, and remarkably lower than those of the single drugs.
Mutant p53-Notch1 Signaling Axis Is Involved in Curcumin-Induced Apoptosis of Breast Cancer Cells
Bae, Yun-Hee,Ryu, Jong Hyo,Park, Hyun-Joo,Kim, Kwang Rok,Wee, Hee-Jun,Lee, Ok-Hee,Jang, Hye-Ock,Bae, Moon-Kyoung,Kim, Kyu-Won,Bae, Soo-Kyung The Korean Society of Pharmacology 2013 The Korean Journal of Physiology & Pharmacology Vol.17 No.4
Notch1 has been reported to be highly expressed in triple-negative and other subtypes of breast cancer. Mutant p53 (R280K) is overexpressed in MDA-MB-231 triple-negative human breast cancer cells. The present study aimed to determine whether the mutant p53 can be a potent transcriptional activator of the Notch1 in MDA-MB-231 cells, and explore the role of this mutant p53-Notch1 axis in curcumin-induced apoptosis. We found that curcumin treatment resulted in an induction of apoptosis in MDA-MB-231 cells, together with downregulation of Notch1 and its downstream target, Hes1. This reduction in Notch1 expression was determined to be due to the decreased activity of endogenous mutant p53. We confirmed the suppressive effect of curcumin on Notch1 transcription by performing a Notch1 promoter-driven reporter assay and identified a putative p53-binding site in the Notch1 promoter by EMSA and chromatin immunoprecipitation analysis. Overexpression of mutant p53 increased Notch1 promoter activity, whereas knockdown of mutant p53 by small interfering RNA suppressed Notch1 expression, leading to the induction of cellular apoptosis. Moreover, curcumin-induced apoptosis was further enhanced by the knockdown of Notch1 or mutant p53, but it was decreased by the overexpression of active Notch1. Taken together, our results demonstrate, for the first time, that Notch1 is a transcriptional target of mutant p53 in breast cancer cells and suggest that the targeting of mutant p53 and/or Notch1 may be combined with a chemotherapeutic strategy to improve the response of breast cancer cells to curcumin.
( Hyo Jun Ahn ),( Myeong Jun Song ),( Jeong Won Jang ),( Si Hyun Bae ),( Jong Young Choi ),( Seung Kew Yoon ) 대한간학회 2016 춘·추계 학술대회 (KASL) Vol.2016 No.1
Aims: We aimed to evaluate the efficacy and safety of Tenofovir disoproxil fumarate (TDF) based therapy in naive and treatment experienced chronic hepatitis B (CHB) patients for 96 weeks in Korean real life practice. Methods: 209 CHB patients who had prescription for TDF at Seoul and Daejeon St. Mary’s hospital were enrolled from December, 2012 to October, 2014. We compared the virological responses and renal safety of naive and treatment experienced patients Results: Overall complete virological response (CVR) showed 80.4% and 84.6% of patients at week 48 and 96, respectively. In subgroup analysis, CVR at week 96 were 88.4%, 75.0 %, 75.5%, and 83.3%, in the lamivudine-resistant (LAM-R) group, Adefovir-resistant (ADV-R) group, multidrug-resistant (MDR) group, and suboptimal response group, respectively. In a multivariate analysis, ADV-R, MDR, HBV DNA, and HBeAg were independent predictors for CVR. In renal safety, Diabetes mellitus (DM), cirrhosis, and initial low estimated glomerular filtration rate were independent factors affecting Cr elevation (≥ 0.5mg/dL). Moreover, we note that 2 patients with DM and cirrhosis have experienced TDF-related Fanconi syndrome. Conclusions: TDF-based therapy demonstrated sustained viral suppression and a favorable safety throughout 2 years. Compared to the naive group, the LAM-R and suboptimal response group showed comparable efficacy, while the ADV-R group and MDR group both showed a relatively low efficacy. Also, the ADV-R group and MDR group were significantly associated with a low CVR. Close monitoring of renal function may be recommended in CHB patients receiving TDF, especially with DM and cirrhosis
교통사고로 인한 후방십자인대 파열 환자에 대한 증례보고 2예
배준효 ( Jun-Hyo Bae ),권용수 ( Yong-su Kwon ),유재은 ( Jae-eun Yu ),이희원 ( Hee-won Lee ),구지은 ( Ji-eun Koo ),김가현 ( Ka-hyun Kim ),최성원 ( Sung-won Choi ),윤주영 ( Joo-young Yoon ),박지원 ( Ji-won Park ) 한방재활의학과학회 2021 한방재활의학과학회지 Vol.31 No.3
This study’s purpose is to report the effectiveness of Korean medicine treatment to posterior cruciate ligament tear patients due to traffic accident. 2 patients were treated with Korean medicine by acupuncture, pharmacopuncture and herbal medication. We assessed the knee pain and functional improvement by using numeric rating scale (NRS), Western Ontario and McMaster Universities arthritis (WOMAC) index and EuroQol-5 dimension (EQ-5D) index. After treatment, NRS decreased from 6 to 2 in case 1 and from 5 to 3 in case 2. EQ-5D index chaged from 0.465 to 0.72 in case 1 and from 0.719 to -0.171 in case 2. WOMAC index decreased from 82 to 13 in case 1 and from 55 to 54 in case 2. NRS improved in both cases, but WOMAC index and EQ-5D index improved in only one case. Korean medicine treatment could be helpful for posterior cruciate ligament tear traffic accident patients. However, further clinical studies are needed to clarify the effectiveness to the patients with old age, degeneration and accompanying injury. (J Korean Med Rehabil 2021;31(3):141-147)