양극산화법에 의한 니오븀 산화물 나노로드 제조

정은혜,장정호,정봉용,Jung, Eun-Hye,Chang, Jeong-Ho,Jeong, Bong-Yong 한국전기화학회 2011 한국전기화학회지 Vol.14 No.4

본 연구에서는 니오븀 산화물을 비교적 저온에서 단시간 동안의 양극산화법을 통해 제조하였다. 이때, 전해질로는 NaF와 HF를 혼합하여 사용하였으며, 20~120 V의 다양한 전압 조건에 따라 생성되는 니오븀 산화물의 미세구조를 관찰하였다. 일반적으로 니오븀 금속의 양극산화 시 초기에 생성된 니오븀 산화물은 무정형 구조이나 반응이 경과함에 따라 점차 결정형 산화물로 성장하게 된다. 이러한 산화물은 XRD 분석을 통하여 결정형의 $Nb_2O_5$ 임을 확인하였고, FE-SEM 분석결과, 그 표면은 매우 밀집된 형태의 나노로드로 이루어진 마이크로콘 산화물임을 알 수 있었다. 적절한 공정변수로 제조된 니오븀 산화물은 마이크로콘 구조 전체 표면에 걸쳐 동일한 크기를 갖는 나노로드 다발을 형성하고 있으며, 이러한 나노 구조는 또한 넓은 표면적을 기대할 수 있어 염료감응 태양전지나 바이오 소재 등에 대한 다양한 분야에 응용될 수 있을 것으로 기대된다. The formation of niobium oxide microcones on niobium substrates was investigated in NaF to the HF electrolytes. This condition builds on the uniqueness of the microstructures niobium oxide. The dimensions and integrity of the bulk microstructures were found to be strongly dependent on potential, temperature, electrolyte composition, and anodization time. The anodic oxide was initially amorphous at all temperatures, but crystalline oxide nucleated during anodization. From XRD patterns of the anodized specimens, the microcones consisted of crystalline $Nb_2O_5$. We demonstrated niobium oxide microcone structures with nanorods. The anodized niobium oxide microcone texture revealed nanorod bundles. The surface of $Nb_2O_5$ microcones is very regular and has a nano-scale. The surface morphologies of the nanorods were examined using FE-SEM. EDS analyses show that the anodically prepared niobium oxide consists of $Nb_2O_5$. The aim of this study is to find the condition of forming the favorable nanorods by anodization method.

아파트 외부공간의 감성적 요소가 주거소비행태에 미치는 영향에 관한 연구

정은혜,정준현,Jung, Eun-Hye,Jeong, Jun-Hyun 한국주거학회 2011 한국주거학회 논문집 Vol.22 No.3

The purpose of the research is analyzing how the emotional factors of the external apartment design can be influenced by the consumers' emotional reaction, and analyzing how the emotional reaction of the consumers will affect the expenditure of the apartment in the upcoming future. For this purpose, first, external surrounding factors of the apartment are extracted and then classified into three major design categories (instinctive, behavioral, and reflective design), and each factor is evaluated by the emotional evaluation. The scope of the research is restricted to the apartments in Daegu city which are built by Top 3 construction companies from the analysis of construction-working rank (May, 2010). The residential-expenditure data are extracted from D-univ. students, in accordance with the satisfaction of the external surroundings and emotional-reaction against the emotional-design factors of the apartment. This research is done by the statistic analysis program SPSS17.0. This shows that difference of emotional design by the apartment external space requisites will be significance as fundamental data for development of application and planning and apartment external space of emotional design by the apartment external space in the future.

세피올라이트를 이용한 압출성형 콘크리트 패널의 휨강도 및 밀도 특성

정은혜(Jung, Eun-Hye),강철(Kang, Cheol),김재원(Kim, Jae-Won),이정구(Lee, Jung-Koo),최훈국(Choi, Hun-Gug),김진만(Kim, Jin-Man) 한국콘크리트학회 2006 한국콘크리트학회 학술대회 논문집 Vol.2006 No.5

노년기 장애인 삶의 만족에 영향을 미치는 사회적 지지, 자아존중감, 우울의 구조적 관계

정은혜(Jung Eun Hye),윤명숙(Yoon Myeong Sook) 한국노년학회 2018 한국노년학 Vol.38 No.3

이 연구는 노년기 장애를 노령화된 장애와 노인성 장애로 분류하고, 이들 집단의 삶의 만족에 영향을 미치는 사회적 지지를 가족지지, 타인지지, 공적지지로 나누어 그 영향력 차이를 분석하였다. 또한 이러한 경로에서 자아존중감과 우울의 매개효과를 함께 살펴봄으로서 노년기 장애인의 삶의 만족에 영향을 미치는 요인들의 구조적관계를 확인함과 동시에 노령화 장애인과 노인성 장애인을 비교하여 두 집단의 차이를 밝히는데 본 연구의 목적이 있다. 연구대상은 한국복지패널 12차 조사와 장애인부가조사데이터(2018) 응답자 중 65세 이상 장애노인 692명이며, 연구방법으로 구조방정식 모형을 활용하였고 집단 간 경로비교를 위해 다중집단분석을 실시하였다.연구결과는 첫째, 노년기 장애인의 삶의 만족에 가족지지와 타인지지가 유의미한 영향을 미치는 것으로 나타났다. 둘째, 노년기 장애인이 인지한 가족지지, 타인지지가 높아질수록 우울수준이 낮아지고 자아존중감은 높아져 삶의 만족도를 증진시키는 것으로 나타났으며, 공적지지가 높아질수록 자아존중감이 낮아지고 우울수준이 높아져서 삶의 만족을 감소시키는 것으로 나타났다. 자아존중감과 우울은 모든 사회적 지지와 삶의 만족도 관계에서 유의미한 매개효과를 보였다. 셋째, 노인성 장애인은 노령화 장애인에 비해 유의미한 수준에서 가족지지를 높게 인지하고 공적지원경험과 공적서비스이용이 많았으며 우울수준이 더 높게 나타났다. 넷째, 타인지지가 삶의 만족에 영향을 미치는 직접효과는 노인성 장애인에게만 정적으로 유의미하게 나타났으며 삶의 만족에 대한 우울의 영향력은 노령화 장애인이 더 크게 나타났고 두 집단의 차이는 유의미하였다. 마지막으로 노령화 장애인은 공적지지의 삶의 만족에 대한 직접효과가 정적으로 유의미하게 나타났으나 우울과 자아존중감의 간접효과로 인해 총효과는 부적으로 나타났다. 본 연구결과에 따라 노령화 장애인과 노인성 장애인의 차별화된 특성과 영향요인들을 고려한 노년기 장애인의 삶의 질 증진을 위한 개입서비스 필요성을 제언하였다. The purpose of this study is to investigate the characteristics of the elderly with disability focused on comparison between aging with disability and disability with aging in Korea. Disability in older age has been related to several psychosocial characteristics, including social support, self-esteem, life satisfaction and depression. However, the exact role of these characteristics in the disablement process remains uncertain and this study focused on comparison between aging with disability and disability with aging in Korea. This study analyzed the 12th wave (2017) KWPS(Korean Welfare Panel Study)and Disability Study which included 692 elderly with disability aged 65 and over. The data were processed by SEM and multi-group SEM analysis. The findings were as follows; First, family support and the significant others support showed direct effects on the life satisfaction of the elderly with disability. Second, family support and the significant others support reduced the level of depression and enhanced self-esteem and finally impact on the life satisfaction of the elderly with disability. The formal support enhanced the depression and reduced self-esteem and eventually reduced the life satisfaction. Third, the disability with aging group showed more higher perception and more experience of formal support and formal service and more higher depression than the aging with disability group. Forth, the significant others support on life satisfaction only showed significance in disability with aging group and depression had significance in disability with aging group. Finally, aging with disability group showed positive effects on the formal support of life satisfaction but showed negative effects on the depression and self-esteem. Based on these findings, practical implications of future directions for research are discussed.

온도에 따른 수중경화형 에폭시수지의 레올로지 특성

정은혜 ( Eun-hye Jung ),강철 ( Cheol Kang ),곽은구 ( Eun-gu Kawg ),배기선 ( Kee-sun Bae ),이대경 ( Dae-kyung Lee ),김진만 ( Jin-man Kim ) 한국건축시공학회 2006 한국건축시공학회 학술발표대회 논문집 Vol.6 No.1

Epoxy resin has less reaction shrinkage, has better water proofing and thermal resistance than other repairing materials, so it has been applied broadly to repair and finish buildings and infrastructures. Although the ambient temperature constructed is varied with the seasons and epoxy resin has to mix with appropriate hardener due to the non self-hardening, as the real construction of it, the ambient temperature is ignored and the blending ration of epoxy resin and hardener is fixed. Also, because of the hardening time is aimed to temperature condition and the tolerance of blending ratio, we investigated the variation of viscosity according to ambient temperature and hardener ratios. As a results of study, we can select the economical blending ratio of epoxy resin and hardener according to site situation.

양생조건에 따른 압축성형콘크리트 패널의 휨강도 특성

정은혜(Jung, Eun-Hye),최훈국(Choi, Hun-Gug),김재원(Kim, Jae-Won),서정필(Seo, Jung-Pil),박선규(Park, Sun-Gyu),김진만(Kim, Jin-Man) 한국콘크리트학회 2006 한국콘크리트학회 학술대회 논문집 Vol.2006 No.11

RPE 13에서의 12분 걷기테스트를 이용한 적정 운동강도의 타당성

정은혜(Jung Eun-Hye),최현민(Choi Hyun-Min),김종경(Kim Jong-Kyung),노호성(Nho Ho-Sung) 한국체육과학회 2008 한국체육과학회지 Vol.17 No.1

The purpose of this study was to examine if a 12-min submaximal treadmill walk test corresponding to a rating of perceived exertion 13 (RPE13) was appropriate to determine exercise intensity. Twenty-seven subjects participated this study, aged from 22 to 26. VO2max, VO2AT and total distance were obtained from a graded exercise test (GXT). Also, VO2 and total distance were obtained during a 12-min submaximal treadmill walk test corresponding to RPE13. The results were obtained as follows: 1) The correlation coefficients between VO2 obtained during a 12-min submaximal treadmill walk test and VO2AT obtained during GXT were statistically significant (r=0.382). 2) The correlation coefficients between VO2 obtained during a 12-min submaximal treadmill walk test and VO2max obtained during GXT were statistically significant (r=0.434). 3) The correlation coefficients between total distance obtained during a 12-min submaximal treadmill walk test and V O2max, VO2AT obtained during GXT were statistically significant (r=0.721, 0.688). 4) The correlation coefficients between VO2 obtained during a 12-min submaximal treadmill walk test and VO2 obtained during RPE13 in GXT were statistically significant (r=0.526). These results suggest that a 12-min submaximal treadmill walk test corresponding to RPE13 is a valid for determining exercise intensity at AT level. Therefore, the 12-min submaximal treadmill walk test corresponding to RPE13 could be a useful for prescribing exercise intensity in the collegiate-student men.

AMPK 활성화를 통한 목통의 항산화 효과

정은혜(Eun Hye Jung),김상찬(Sang Chan Kim),조일제(Il Je Cho),김영우(Young Woo Kim) 한의병리학회 2015 동의생리병리학회지 Vol.29 No.1

오령산(五岺散)으로 호전된 여성 하부 요로감염증 환자 치험 4례

정은혜 ( Eun Hye Jung ),유정은 ( Jeong Eun Yoo ),최경희 ( Kyung Hee Choi ),유동열 ( Dong Youl Yoo ) 대한한방부인과학회 2012 大韓韓方婦人科學會誌 Vol.25 No.4

Purpose: This paper aims to report the effects of Oryeong-san on lower urinary tract infection. Methods: Four women were admitted to Dunsan Oriental Hospital with chief complaint that was not supposed to be a symptom of urinary tract infection. During the admission, urine test showed pyuria with white blood cell and their chief complain also accompanied. We prescribed Oryeong-san three times a day, and then took follow-up 4 days later. Results: After treatment, symptoms of lower urinary tract infection were decreased and the results of urine test improved also. Conclusions: These cases indicate that Oryeong-san is effective in treatment of the lower urinary tract infection.

TiNb 합금의 양극산화법에 의한 나노튜브 생성거동

정은혜 ( Eun Hye Jung ),정봉용 ( Bong Yong Jeong ) 대한금속재료학회(구 대한금속학회) 2013 대한금속·재료학회지 Vol.51 No.11

Titanium and titanium alloys have been used extensively as bone-implant materials due to their high strength-to-weight ratio, good biocompatibility and excellent corrosion resistance. In this work, we investigated the surface characteristics of nanotubes formed on Ti25Nb alloys in a 0.1M NaF aqueous electrolyte containing HF using electrochemical methods. The constant voltages were widely applied to a range from 20 to 80 V. As a result, the oxide layers formed with nanotube structures in which the nanotubes increased in a linear diameter and length. The TiNb nanotube morphology was strongly influenced by the fluoride concentration, applied potential and reaction time.