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남희영,신준헌,이준호,최은나,박혜원,Nam, Hee-Young,Shin, Joon-Heon,Lee, Jun-Ho,Choi, Eun-Na,Park, Hye-Won 대한소아신장학회 2006 Childhood kidney diseases Vol.10 No.2
Purpose : Vesicoureteral reflux(VUR) is the major risk factor of urinary tract infection(UTI) in children and may result in serious complications such as renal scarring and chronic renal failure. The purpose of this study was to evaluate the relationship between VUR and renal scar formation, the usefulness and correlation of various imaging studies in reflux nephropathy, and the spontaneous resolution of VUR. Methods : We retrospectively reviewed 106 patients with VUR with no accompanying urogenital anomalies in the Department of Pediatrics, Bundang CHA Hospital during the period from Jan. 1996 to Mar. 2005. Ultrasonography and $^{99m}Tc$-dimercaptosuccinic acid(DMSA) scan were performed in the acute period of UTI. Voiding cystourethrography(VCUG) was performed 1 to 3 weeks after treatment with UTI. Follow-up DMSA scan was performed 4 to 6 months after treatment and a follow-up VCUG was performed every 12 months. Results : The mean age at detection of VUR was $13.8{\pm}22.2$ months and the male to female ratio was 2:1. The incidence of renal scarring showed a tendency of direct correlation between severity of VUR(P<0.001) and abnormal findings of renal ultrasonography(P<0.01). 63.2%(24 of 38 renal units) of renal parenchymal defects present in the first DMSA scan disappeared on follow-up DMSA scans. Follow-up DMSA scans detected renal scars in 7(14%) of 50 renal units with ultrasonographically normal kidneys. Meanwhile, ultrasonography did not show parenchymal defects in 7(36.8%) of 19 renal units where renal scarring was demonstrated on a follow-up DMSA scan. The spontaneous resolution rate of VUR was higher(75%) in cases with low grade(I to III) VUR(P<0.01). Conclusions : The presence and severity of VUR and abnormal findings of renal ultrasonography significantly correlated with renal scar formation. DMSA scan was useful in the diagnosis of renal defects. Meanwhile renal ultrasonography was an inadequate method for evaluating renal parenchymal damage. Therefore, follow-up DMSA scans should be performed to detect renal scars even in children with low-grade VUR and normal renal ultrasonography.
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영재학급과 일반학급에서의 학습경험에 따른 초등학교 영재학생의 자기효능감, 학습동기, 학습몰입 비교
남희영 ( Heeyoung Nam ),진석언 ( Sukun Jin ) 건국대학교 교육연구소 2014 교사와 교육(구 교육논집) Vol.33 No.-
본 연구의 목적은 영재학급과 일반학급에서의 학습경험에 따른 초등영재의 자기효능감, 학습동기, 학습몰입을 비교해 보는 것이다. 이를 위해 다음과 같은 연구 문제를 설정하였다. 첫째, 영재학급과 일반학급에서의 학습경험에 따른 초등영재의 자기효능감 수준에는 차이가 있는가? 둘째, 영재학급과 일반학급에서의 학습경험에 따른 초등영재의 학습동기 수준에는 차이가 있는가? 셋째, 영재학급과 일반학급에서의 학습경험에 따른 초등영재의 학습몰입 수준에는 차이가 있는가? 본 연구를 통해 얻은 결론은 다음과 같다. 첫째, 영재학급과 일반학급에서의 학습경험에 따른 초등영재의 자기효능감을 비교해 본 결과 영재학급보다 일반학급에서 전반적으로 자기효능감이 높은 것으로 나타났다. 둘째, 영재학급과 일반학급에서의 학습경험에 따른 초등영재의 학습동기를 비교해 본 결과 통계적으로 유의미하지 않았다. 셋째, 영재학급과 일반학급에서의 학습경험에 따른 초등영재의 학습몰입을 비교해 본 결과 영재학급보다 일반 학급에서 전반적으로 학습몰입이 높은 것으로 나타났다. This study investigated the values of ability-based grouping for gifted students by comparing their self-efficacy, learning moituvation and learning flow in genearl classrooms and special classrooms. The results showed that (1)gifted students had higher levels of self-efficacy in general classrooms than in special classrooms, that (2)the levels of learning motivation of gifted students were not different by their presence either in general classrooms or in special classrooms, and that (3)gifted students had higher levels of learning flow in general classrooms than in special classrooms. Further discussion was provided about somewhat unexpected results in this study.
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화학기상응축 공정으로 제조한 TiO<sub>2</sub> 나노분말의 광촉매 특성
임성순,남희영,윤성희,이창우,유지훈,이재성 한국분말야금학회 2003 한국분말재료학회지 (KPMI) Vol.10 No.2
$TiO_2$ nanopowder was synthesized by chemical vapor condensation (CVC) process and its photocatalytic property depending on microstructure was considered in terns of decomposition rate of organic compound. In order to control microstructure of $TiO_2$ nanopowder such as particle size and degree of agglomeration, precursor flow rate representing number concentration was changed as a process variable. In TEM observation, spherical $TiO_2$ nanoparticles with average size of 20 nm showed gradual increases in particle size and degree of agglomeration with increase of precursor flow rate. Also decomposition rate of organic compound increased with decreasing precursor flow rate. Thus, it was concluded that photocatalytic property was enhanced by targe surface area of disperse $TiO_2$ nanoparticles synthesized at lower precursor flow rate condition in CVC process.
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원저 : 체외 수정으로 임신된 조기 출산 쌍태아와 정상 임신된 조기 출산 쌍태아의 임상적 고찰
신준헌 ( Jun Hun Shin ),남희영 ( Hee Young Nam ),이초애 ( Cho Ae Lee ),최은나 ( Eun Na Choi ),이규형 ( Kyu Hyung Lee ) 대한주산의학회 2006 Perinatology Vol.17 No.4
목적 : 본 연구의 목적은 체외 수정시술로 임신된 조기 출산 쌍태아와 자연 임신된 조기 출산 쌍태아의 신생아 예후를 알아보고자 기획되었다. 방법 : 60쌍의 체외 수정시술로 임신된 산모(체외 수정군)와 34쌍의 자연 임신된 산모(자연 임신군)의 조기 출산 쌍태아의 신생아 예후를 후향적으로 분석하였다. 산모와 산과적 특성도 비교하였다. 모든 출생아는 재태 주령 35주 미만이었고 2000년 1월부터 2004년 12월 사이에 분당차병원에서 태어났으며 모두 신생아 집중치료실에 입원했던 환아였다. 통계학적 방법으로는 Student t-검정과 χ2 검정을 시행하였다. 결과 : 산과적 특성상, 산모의 연령과 초산부의 비율이 체외 수정군에서 유의하게 높게 나타났으나 다른 특성들은(조기 진통, 조기 양막 파수, 임신성 고혈압, 임신성 당뇨, 제왕 절개 분만) 두 군간에 비슷한 양상을 보였다. 신생아 예후로는, 재태 주령, 출생 체중, 재원 기간, Apgar 점수, 신생아 사망률과 질병 이환율을 분석하였는데 자연 임신군과 비교하여 체외 수정군에서 유의한 차이를 발견하지 못했다. 결론:본 연구에서 체외 수정군이 산모의 나이와 초산부 비율을 제외하고는 산과적 특성과 신생아 예후에서 정상 임신군과 유의한 차이를 보이지 않았다. Objective : The aim of this study was to evaluate and compare neonatal outcome of premature twins conceived by in vitro fertilization (IVF) to those of naturally conceived. Methods : We retrospectively analyzed neonatal outcome of sixty pairs of premature twins conceived by IVF (IVF twin group) and 34 pairs that naturally conceived (natural twin group). Maternal and obstetric characteristics were also compared. All were born before 35 weeks of gestation between January 2000 and December 2004 at Pochon-Cha Hospital and admitted to neonatal intensive care unit. Student t-test and χ2 test were used for statistical analysis. Results : For obstetrical characteristics, maternal age and rates of nulliparous were sibnificanty twin group. But, other parameters (preterm labor, premature rupture of membranes, pregnancy-induced hypertension, gestational diabetes mellitus) were similar between two groups. For neonatal outcome, gestational age, duration of hospital stay, Apgar score, neonatal mortality and morbidity were reviewed. All parameters were no significant differences in IVF twin group compare to natural twin group Conclusions : In our study, IVF twin group had no significant differences in obstetric characteristics (except for maternal age and parity) and neonatal outcome compare to natural twin group.
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