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고주연,금기정,김현정,김현주,홍영식 明知大學校 産業技術硏究所 1995 産業技術硏究所論文集 Vol.14 No.-
In this study, we study about park and ride facilities at subway station in seoul, since we have perceived that park and ride facilities at subway's station's serious problem on its operation and usage. We practiced the interviews and transfer rate survey so found these problems of operation usage problem, spatial utilization, private park and ride facilities. Through the analysis of these problem we propose the adequate alternatives and we hope that our study contribute operation rationalization of park and ride facilities at subway station.
고윤기(Youn-Ki Ko),송정한(Jung-Han Song),허훈(Hoon Huh),장종기(Jong-Ki Jang),김진웅(Jin-Woong Kim),김진영(Jin-Young Kim) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.6
A recent trend within the automotive industry has been an emphasis on the development of modular assemblies for future vehicle applications. So for a damper or spring of the suspension system, the existing method to design the system through the analysis for the individual components needs to converted to the methods to design the performance of damper-strut module within the vehicle environment. In particular, the development of system models that account for the interactions between components within a modular assembly is necessary to insure that a module is properly designed. In this paper finite element analysis for a damper module as installed in a McPherson strut front suspension is carried out. The results of a study of the structural behavior of a damper-strut module model include the analysis result applying the dynamic loading for the real vehicle environment and effects of changes in individual component specifications.
( Ki Hwan Lee ),( Young Bok Ko ),( Jung Bo Yang ),( Soo Youn Song ),( Hye Young Oh ),( Hey Yun Kim ) 대한산부인과학회 2018 대한산부인과학회 학술대회 Vol.104 No.-
Recently, we have most of the patients with multiple myomas to take magnetic resonance imaging(MRI) routinely for preoperative evaluation. But, It is the first time in years we found other diseases besides myomas incidentally on MRI scan. The case report is described of a of a 35year-old female, nullipara, who came to outpatient department of our hospital with the chief complaint of heavy menstrual bleeding, dysmenorrhea. And she had multilpe myoma up to 5cm found two years ago. We performed preoperative magnetic resonance imaging(MRI) scan to evaluate myoma, but sigmoid colon cancer is confirmed on MRI, so she is transferred to general surgery part. A computed tomography scan, positron emission tomography-computed tomography(PET-CT) scan and colonoscopy demonstrated colon cancer and biopsy confirmed adenocarcinoma. She had laparoscopic anterior resection and adjuvant chemotherapy. We are planning myomectomy after stabilized her state.
( Ki Yun Kim ),( Won Young Jang ),( Ji Young Lee ),( Do Youn Jun ),( Jee Youn Ko ),( Young Ho Yun ),( Young Ho Kim ) 한국미생물 · 생명공학회 2016 Journal of microbiology and biotechnology Vol.26 No.2
The effect of kaempferol (3,5,7,4-tetrahydroxyflavone), a flavonoid compound that was identified in barnyard millet (Echinochloa crus-galli var. frumentacea) grains, on G2-checkpoint and apoptotic pathways was investigated in human acute leukemia Jurkat T cell clones stably transfected with an empty vector (J/Neo) or a Bcl-xL expression vector (J/Bcl-xL). Exposure of J/Neo cells to kaempeferol caused cytotoxicity and activation of the ATM/ATR-Chk1/Chk2 pathway, activating the phosphorylation of p53 (Ser-15), inhibitory phosphorylation of Cdc25C (Ser-216), and inactivation of cyclin-dependent kinase 1 (Cdk1), with resultant G2- arrest of the cell cycle. Under these conditions, apoptotic events, including upregulation of Bak and PUMA levels, Bak activation, mitochondrial membrane potential (Δψm) loss, activation of caspase-9, -8, and -3, anti-poly (ADP-ribose) polymerase (PARP) cleavage, and accumulation of apoptotic sub-G1 cells, were induced without accompanying necrosis. However, these apoptotic events, except for upregulation of Bak and PUMA levels, were completely abrogated in J/Bcl-xL cells overexpressing Bcl-xL, suggesting that the G2-arrest and the Bcl-xL-sensitive mitochondrial apoptotic events were induced, in parallel, as downstream events of the DNA-damage-mediated G2-checkpoint activation. Together these results demonstrate that kaempferol-mediated antitumor activity toward Jurkat T cells was attributable to G2-checkpoint activation, which caused not only G2-arrest of the cell cycle but also activating phosphorylation of p53 (Ser-15) and subsequent induction of mitochondriadependent apoptotic events, including Bak and PUMA upregulation, Bak activation, Δψm loss, and caspase cascade activation.
Assessment of Airborne Microorganisms in a Swine Wastewater Treatment Plant
Ki Youn Kim,Han Jong Ko,Dae Keun Kim 대한환경공학회 2012 Environmental Engineering Research Vol.17 No.4
Quantification of the airborne microorganisms (bacteria and fungi) at a swine wastewater treatment plant was performed. Microbial samples were collected at three different phases of the treatment process over a 1-yr period. Cultivation methods based on the viable counts of mesophilic heterotrophic bacteria and fungi were performed. The concentrations of airborne bacteria ranged up to about 5 × 103 colony-forming unit (CFU)/m3, and those of airborne fungi ranged up to about 9 × 102 CFU/m3. The primary treatment (e.g., screen, grit removal, and primary sedimentation) was found to be the major source of airborne microorganisms at the site studied, and higher levels of airborne bacteria and fungi were observed in summer. High levels of the respirable bioaerosol (0.65 to 4.7 μm in size) were detected in the aeration phase. Among the environmental factors studied, temperature was strongly associated with fungal aerosol generation (with a Spearman correlation coefficient of 0.90 and p-value <0.01). Occupational biorisks are discussed based on the observed field data.