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Arc Stability Index Using Phase Electrical Power in AC Electric Arc Furnace
SeungHun Kim,Jae Jin Jeong,KyuHwan Kim,Jong Hyun Choi,Sang Woo Kim 제어로봇시스템학회 2013 제어로봇시스템학회 국제학술대회 논문집 Vol.2013 No.10
In AC electric arc furnace, the state of the arc is a major concern to save the electrical power and to increase the productivity. There have been several researches about the arc stability index, such as the index based on the direct measurements of arc current and the index using the three-phase to ground voltage. In this paper, a modified index, which considers the concepts of both voltages and currents, is introduced. This index is the mapped phase electrical power by a mapping function, and the electrical power is calculated from the phase to ground voltages and currents. The simulations of various cases are performed, and the modified index shows a good performance in analyzing the arc state compared to existing index.
( Seunghun LEE ),( Ju Han KIM ),( Myung Ho JEONG ),( Hyukjin PARK ),( Ji Eun KIM ),( Youngkeun AHN ),( Jong Hyun KIM ),( Shung Chull CHAE ),( Young Jo KIM ),( Seung Ho HUR ),( In Whan SEONG ),( Take J 대한내과학회 2014 대한내과학회 추계학술대회 Vol.2014 No.1
Background: This study aims to investigate clinical features, angiographic fi ndings, and outcomes of young AMI patients. Methods: We analyzed major adverse cardiac events (MACE) in the Korea Acute Myocardial Infarction Registry from November 2005 to October 2010. Registered patients were divided into two groups, young age group (<45 years) and old age group (=65 years). Results: Young age group was composed of 1,248 patients (39.6±4.3 years) and old age group 9,759 patients (74.5±6.5 years). Male, smoking, family history and dyslipidemia were more frequent in young age group than those in old age group (96.6% vs. 57.5%, P<0.001; 86.9% vs. 45.7%, P<0.001; 15.5% vs. 4.8%, P<0.001; 13.4% vs. 9.5%, P<0.001). Young Korean adults with AMI had a shorter symptom-to-door (17.4±72.6 min vs. 24.2±77.7 min, P=0.002), but a longer door-to-balloon time (111.1±106.8 min vs. 101.8±92 min, P=0.043). The young age group had shown a favorable prognosis compared with old age group by Kaplan-Meier survival analysis (long-rank, P<0.001). However, there was no signifi cant difference in the adjusted MACE rate at one-year (HR 1.10, 95% CI 0.79-1.53, P=0.585), even after propensity-matched analysis (HR 0.80, 95% CI 0.52-1.23, P=0.307). Conclusions: Young Korean adults with AMI have similar clinical outcomes with old age patients, and therefore they should be treated aggressively like elderly patients.
[PE-0031] Single Cross Corn Hybrid ‘Jindaok’with Lodging Tolerance and High Yield
MoonJong Kim(MoonJong Kim),JaeKeun Choi(JaeKeun Choi),HeeYeon Kim(HeeYeon Kim),JeongHeon Han(JeongHeon Han),Wang Seung Hyun(Wang Seung Hyun),WooSik Yong(WooSik Yong),JaeNam Shim(JaeNam Shim),SeungHun 한국육종학회 2022 한국육종학회 공동학술발표집 Vol.2022 No.-
( Uh Jin KIM ),( Seunghun LEE ),( Myung Ho JEONG ),( Ju Han KIM ),( HyukJin PARK ),( Ji Eun KIM ),( Youngkeun AHN ),( Jong Hyun KIM ),( Shung Chull CHAE ),( Young Jo KIM ),( Seung Ho HUR ),( In Whan S 대한내과학회 2014 대한내과학회 추계학술대회 Vol.2014 No.1
Background: The correlation between obesity and metabolic syndrome (MetS) remains unclear. This study aims to investigate impact of obesity phenotype on clinical outcomes with ST-segment elevation myocardial infarction (STEMI). Methods: We analyzed in-hospital mortality and major adverse cardiac events (MACE) of 2,606 obese patients who underwent primary percutaneous coronary intervention (PCI) in the Korea Acute Myocardial Infarction Registry from November 2005 to October 2010. Patients were divided into two groups: unhealthy (any of the Mets components) obesity (BMI =25 kg/m2) and healthy (none of the Mets components) obesity. Results: The unhealthy obesity group was composed of 703 patients (27%) and healthy obesity group 1,903 patients (73%). Unhealthy obesity was more frequent in female (25.9% vs. 10.1%, P<0.001) and multi-vessel disease (53.1% vs. 47.6%, P=0.012). There were no signifi cant differences in other baseline characteristics, angiographic and procedural fi ndings, and prescribed medications between two groups. The overall incidence of complications after PCI (13.1% vs. 10.7%, P=0.097) and in-hospital mortality (1.9% vs. 1.6%, P=0.521) were similar in unhealthy obesity group compared with healthy obesity group. By the multivariate Cox regression analyses, the presence of Mets in obese patients was not an independent factor for predicting the adjusted MACE rate at one-month (HR 1.19, 95% CI 0.56-2.54, P=0.645), six-month (HR 1.48, 95% CI 0.94-2.32, P=0.088), and twelve-month (HR 1.10, 95% CI 0.75-1.61, P=0.622). Conclusions: Obesity phenotype is not an independent prognostic factor for patients with STEMI who undergoing primary PCI. The risk stratifi cation by presence or absence of Mets is not useful in these patients.