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시멘트 및 고성능AE감수제가 고유동콘크리트의 유동특성에 미치는 효과에 관한 실험적 연구
박선규,반성수,우영제,김규용,김무한 忠南大學校 産業技術硏究所 1998 산업기술연구논문집 Vol.13 No.1
The fluidity of high flowing concrete can be affected by numerous parameters which characterize either the cement or the admixture. The reactivity of a cement as determined by its chemical compositions (especially its C₃A content), its fineness and its content in sulfates and alkalies obviously plays a key role in rheology of high flowing concrete in fresh state. Specific properties of high range water reducing AE agent used to enhance the workability of high flowing concrete also exert important influence. The purpose of this experimental study is to investigate and analyze the effect of cement and high range water reducing AE agent in fluidity, setting, compressive strength of high flowing concrete. As a result, we found that fluidity of high flowing concrete is affected greatly by kind of cement and high range water reducing AE agent, also, there is harmonic character between high belite cement and polycarbonic acid high range water reducing AE agent.
당뇨병 환자 교육에 따른 지식, 자기효능감 및 자기관리행위의 변화
정진규(Jin-Gyu Jung),정은영(Eun-Young Chung),김아련(A-Ryeon Kim),박현진(Hyun-Jin Park),김윤정(Yun-Jung Kim),반영화(Young-Hwa Ban),김종성(Jong-Sung Kim),윤석준(Seok-Joon Yoon),김순영(Soon-Young Kim),안순기(Soon-Ki Ahn),남해성(Hae-Sung 한국농촌의학 지역보건학회 2017 농촌의학·지역보건 Vol.42 No.4
본 연구는 2014년 5월부터 2015년 5월까지 세종특별자치시 고혈압 · 당뇨병 등록교육센터에서 교육받은 당뇨병 환자 39명을 대상으로 교육 프로그램의 효과를 평가하고자 실시되었다. 프로그램은 제2형 당뇨병에 대한 질환, 영양, 운동 등에 관한 내용으로 2일 동안 2회의 세션(세션 당 45 분)으로 구성되었다. 교육 전에 당뇨병에 관한 지식, 자기효능감, 자기관리행위 등을 평가하였고, 교육 직후에 지식과 자기효능감 평가, 교육 후 12주째에 자기관리행위를 평가하여 다음과 같은 결과를 얻었다. 당뇨병 지식 점수(10점 만점)는 프로그램 전후 평균 5.72점에서 8.21점으로 유의하게 증가하였고 (p<0.001), 자기효능감 점수(10점 만점)는 프로그램 전후 6.88점에서 8.16점으로 유의하게 증가하였다 (p<0.001). 자기관리행위 점수는 프로그램 전 5점 만점 중 3.59점이었던 것이 프로그램 종료 12주째에 4.35점으로 유의하게 증가하였다(p<0.001). 본 프로그램은 당뇨병 지식, 자기효능감, 자기관리행위 등의 향상을 통해 등록환자의 효과적인 당뇨병 관리에 기여할 수 있을 것으로 사료된다. Objective: This study was aimed to evaluate the effectiveness of the diabetes education program implemented in a community hypertension and diabetes education center. Methods: Participants were thirty nine diabetic patients who received the education program in the center from May 2014 through May 2015. The education program consisted of two sessions for 2 days (45 minutes per session) regarding clinical information, nutrition and exercise for type 2 diabetes patients. Initially, they were assessed for general characteristics, knowledge on diabetes, self-efficacy and self-care behaviors. Reassessment was performed on their knowledge and self-efficacy directly after the program, and on self-care behaviors at 12 weeks after the program. Results: The mean score of diabetes knowledge was significantly increased from 5.27±2.10 to 8.21±1.20 (p<0.001) between before and after the program. The self-efficacy score was also significantly increased from 6.88±1.72 to 8.16±1.47 (p<0.001). The self-care behavior score was significantly increased from 3.59±1.89 before the program to 4.35±1.29 (p<0.001) at 12 weeks after the program. Conclusion: The diabetes education program may be effective on the improvement of knowledge, self-efficacy and self-care behaviors in type 2 diabetic patients.
( Hye Ryun Ban ),( Kyung Mo Kim ),( Joo Young Jang ),( Gu Hwan Kim ),( Han Wook You ),( Kyung Eun Kim ),( Eun Sil Yu ),( Dae Yeon Kim ),( Ki Hun Kim ),( Young Joo Lee ),( Sung Gyu Lee ),( Young Nyun P The Editorial Office of Gut and Liver 2009 Gut and Liver Vol.3 No.1
Glycogen storage disease type IV (GSD-IV) is an autosomal recessive disease caused by a deficient glycogen branching enzyme (GBE), encoded by the GBE1 gene, resulting in the accumulation of abnormal glycogen deposits in the liver and other tissues. We treated a 20-month-old girl who presented with progressive liver cirrhosis and was diagnosed with GSD-IV, as confirmed by GBE1 gene mutation analysis, and underwent living related heterozygous donor liver transplantation. Direct sequencing of the GBE1 gene revealed that the patient was compound heterozygous for a known c.1571G>A (p.Gly264Glu) mutation a novel c.791G>A (Arg524Gln) mutation. This is the first report of a Korean patient with GSD-IV confirmed by mutation analysis, who was treated successfully by liver transplantation. (Gut and Liver 2009;3:60-63)
Ban, Young Suk,Masiello, Emiliano,Lenain, Roland,Joo, Han Gyu,Sanchez, Richard Elsevier 2018 Annals of nuclear energy Vol.115 No.-
<P><B>Abstract</B></P> <P>In order to examine the performance of two deterministic codes, nTRACER and the standalone developing version of the IDT solver of APOLLO3<B>®</B>, problems from 2D single assembly to 3D full core were computed with the same macroscopic cross-section library, so as to suppress the effects of physical modeling and to allow a direct comparison in terms of methodology, code architecture and performances. The problems we considered include cases for which the codes were not optimized in their initial design, allowing thus to analyze the potential for generalization and/or estimate possible improvements to broaden the scope of application of the codes.</P>
부력의 효과를 최소화한 메탄-공기 비예혼합 화염의 화염소화
반규호(Gyu Ho Ban),정용호(Yong Ho Chung),박정(Jeong Park),권오붕(Oh Boong Kwon),윤진환(Jin Han Yun),길상인(Sang In Keel),김영주(Young Ju Kim) 한국연소학회 2013 KOSCOSYMPOSIUM논문집 Vol.2013 No.12
Experiments were conducted to clarify the role of the outermost edge flame in low-strain-rate flame extinction in buoyancy-suppressed non-premixed methane flames diluted with He and N2.The use of He curtain flow produced a microgravity level of 10-2?10-3g in N2? and He-diluted non-premixed counterflow flame experiments. The critical He and N2 mole fraction at extinction with a global strain rate was examined at various burner diameters (10, 20 , and 25mm). The results showed that the extinction curves differed appreciably with burner diameter. Before the turning point along the extinction curve, low-strain-rate flames were extinguished via shrinkage of the outermost edge flame with and without self-excitation. High-strain-rate flames were extinguished via a flame hole while the outermost edge flame was stationary.
에너지 효율 향상을 위한 직류/교류 하이브리드 급전시스템의 해석
이영진(Young Jin Lee),한동화(DH Han),최중묵(JM Choi),반충환(CH Ban),김동진(Dong Jin Kim),최규하(Gyu Ha Choe) 전력전자학회 2010 전력전자학술대회 논문집 Vol.2010 No.7
Hvbrid distribution system is able to use existing AC load under AC power and DC power by providing existing AC power and proper DC voltage at the same time. and, the future expected DC appliance is also available. Hybrid distribution system is divided into two different type. the one is DC common method and the other is AC common method. This paper design each system, and study operating characteristics for improving energy efficiency.
Bong-Gyu Ryu,Si Un Lee,Hwan Seok Shim,Jeong-Mee Park,Yong Jae Lee,Young Deok Kim,Tackeun Kim,Seung Pil Ban,Hyoung Soo Byoun,Jae Seung Bang,O-Ki Kwon,Chang Wan Oh 대한신경외과학회 2023 Journal of Korean neurosurgical society Vol.66 No.6
Objective : To analyze the outcomes of coil embolization (CE) for unruptured intracranial aneurysm (UIA) according to region and hospital size based on National Health Insurance Service data in South Korea. Methods : The incidence of complications, including intracranial hemorrhage (ICRH) and cerebral infarction (CI), occurring within 3 months and the 1-year mortality rates in UIA patients who underwent CE in 2018 were analyzed. Hospitals were classified as tertiary referral general hospitals (TRGHs), general hospitals (GHs) or semigeneral hospitals (sGHs) according to their size, and the administrative districts of South Korea were divided into 15 regions. Results : In 2018, 8425 (TRGHs, 4438; GHs, 3617; sGHs, 370) CEs were performed for UIAs. Complications occurred in 5.69% of patients seen at TRGHs, 13.48% at GHs, and 20.45% at sGHs. The complication rate in TRGHs was significantly lower than that in GHs (p=0.039) or sGHs (p=0.005), and that in GHs was significantly lower than that in sGHs (p=0.030). The mortality rates in TRGHs, GHs, and sGHs were 0.81%, 2.16%, and 3.92%, respectively, with no significant difference. Despite no significant difference in the mortality rates, the complication rate significantly increased as the number of CE procedures per hospital decreased (p=0.001; rho=-0.635). Among the hospitals where more than 30 CEs were performed for UIAs, the incidence of CIs (p=0.096, rho=-0.205) and the mortality rates (3 months, p=0.048, rho=-0.243; 1 year, p=0.009, rho=-0.315) significantly decreased as the number of CEs that were performed increased and no significant difference in the incidence of post-CE ICRH was observed. Conclusion : The complication rate in patients who underwent CE for UIA increased as the hospital size and physicians’ experience in conducting CEs decreased. We recommend nationwide quality control policies CEs for UIAs.
이영진(Young Jin Lee),한동화(DH Han),반충환(CH Ban),김영우,성백서,은종목(JM Eun),최규하(Gyu Ha Choe) 전력전자학회 2010 전력전자학술대회 논문집 Vol.2010 No.11
본 논문에서는 삼상 AC-DC 컨버터와 강압컨버터를 이용한 배터리 충전장치를 제안한다. 제안 하는 배터리 충전시스템은 상용전원뿐만 아니라 태양광시스템의 MPPT제어를 통하여 최대전력을 공급받아 급속충전시스템의 CV/CC(정전압/정전류)모드 제어를 통해 배터리를 빠르게 충전한다.
First Record of the Soft-Wing Flower Beetle Genus Kuatunia (Coleoptera: Melyridae) in Korea
Seung-Gyu Lee,Heejo Lee,Young-Gyu Ban,Dong Eon Kim 한국동물분류학회 2020 Animal Systematics, Evolution and Diversity Vol.36 No.3
The family Melyridae Leach includes more than 300 genera and 6,000 species consisting of four subfamilies (Dasytinae, Malachiinae, Melyrinae, Rhadalinae). Members of the subfamily Malachiinae is distributed all over the world except for New Zealand and prefer warmer, arid or semi-arid regions. Among the malachiine genera, a genus Kuatunia Evers includes 17 species worldwide, mainly distributed in East Asia. In this study, the genus and its described species, Kuatunia oblongula (Kiesenwetter), is newly added to the Korean fauna. A diagnosis, habitus photographs, and illustrations of diagnostic characters are provided, with a key to species of the genus in East Asia.