$CaO-MgO-Al_{2}O_{3}-SiO_{2}-P_{2}O_{5}$계 Bioglass-Ceramic의 결정화 조건에 따른 기계적 성질 및 생체적합성에 관한 연구

최현미,이민호,배태성,박찬운,Choi, Hyun-Mi,Lee, Min-Ho,Bae, Tae-Sung,Park, Charn-Woon 대한치과보철학회 1996 대한치과보철학회지 Vol.34 No.1

The purpose of this study was to investigate the mechanical properities and biocompatibility with crystallization temperature and time of a bioactive glass-ceramic system $41.4wt%SiO_{2}-35.0wt%CaO-3.0wt%MgO-12.0wt%P_{2}O_{5}-8.6wt%Al_{2}O_{3}$ with same molar percent of $Al_{2}O_{3}\;and\;P_{2}O_{5}$. The crystallization behaviors were investigated with DTA, XRD and SEM. Fracture toughness with the change of crystallization temperature and time was measured by indentation fracture method. Also, biocompatibility was evaluated by culture of mouse fibroblast cell line L929. The results obtained were as follows ; 1. The major crystalline phases were apatite and anorthite, and relative intensity of anorthite phase was increased at $1004^{\circ}C$. 2. The hardness and fracture toughness were gradually increased with the increase in ceraming temperature to $1004^{\circ}C$. 3. When the glass ceramic was heat-treated for 4 hours at ceraming temperature of $1004^{\circ}C$, hardness and fracture toughness showed the maximum values $578.84k/mm^2\;and\;2.07MPa\;m^{1/2}$, respectively. 4. The growth rate and cytotoxic of L929 fibroblast cells for bioactive glass ceramic were better than those of stainless steel and titanium.

강원 유류오염지역의 수리지질 특성 연구

최현미,이진용,Choi, Hyun-Mi,Lee, Jin-Yong 한국지하수토양환경학회 2010 지하수토양환경 Vol.15 No.2

Estimations of porosity and bulk density, particle size analysis of soli samples, tracer test and slug test were performed in a petroleum contaminated area of Kangwon for understanding characteristics of the aquifer. Porosities of the samples were estimated 0.158~0.257, and bulk densities were estimated as $1.73\sim2.10\;g/cm^3$. Majority proportion of the soil samples was 0.5~1.0 mm size. In the soil texture triangle, all samples were distributed at sand area. Uniformity coefficients were estimated as 7.71~10.39, and thus all samples were poorly-sorted. In the tracer test, Darcy velocity was estimated to $4.8\times10^{-6}$ cm/day, effective porosity was 0.175, and longitudinal dispersivity was 0.1 m. According to the slug test, hydraulic conductivities of the test wells were estimated as $2.243\times10^{-2}\sim1.634\times10^{-2}$ cm/sec. These hydrogeologic parameters can be used for efficient remediation design of the petroleum contaminated area.

녹색정화 : 저탄소 토양.지하수오염 정화를 위한 선택

최현미,이진용,Choi, Hyun-Mi,Lee, Jin-Yong 한국지하수토양환경학회 2009 지하수토양환경 Vol.14 No.1

양구 해안분지에서의 지하수위 분포 및 강우 반응 분석

최현미,이진용,Choi, Hyun-Mi,Lee, Jin-Yong 한국지하수토양환경학회 2010 지하수토양환경 Vol.15 No.6

The groundwater level distribution and characteristics of responses to rainfall were examined in the Haean basin of Yangu that has a single stream exit to the east. The groundwater levels showed a circular or elliptical distribution converging the center of the basin with different hydraulic gradients in the north and south regions. The waterlevel elevations exhibited a perfect correlation with topographic elevation ($r^2=0.99$) while the depth to water showed a rather weak correlation ($r^2=0.49$). The water table fluctuation (WTF) method yielded recharge ratios of 6.1~12.65% ($S_y=0.02$) and 15.2~28.5% ($S_y=0.05$). The waterlevels of HG3 well, which is much proximal to a stream, were weakly auto-correlated but they were highly sensitive to direct infiltration from the rainfall event. The shorter regulation times of the HG3 represented a quicker dissipation of the input stress (rainfall).

제주도 지하수 관측망 수위에 대한 모수 및 비모수 변동경향 분석

최현미,이진용,Choi, Hyun-Mi,Lee, Jin-Yong 한국지하수토양환경학회 2009 지하수토양환경 Vol.14 No.5

Water levels in groundwater monitoring wells of Jeju Island were analyzed using parametric and non-parametric trend analyses. Number of used monitoring wells in the analysis are 94 among totally 106 monitoring wells and the monitoring period is greater than single year, from 2001 to 2009. For the trend analysis, both parametric (linear regression) and nonparametric (Mann-Kendall trend test and Sen's trend test) methods were adopted. Results of the linear regression analysis on daily basis indicated that about 58.5% of the monitoring wells showed a decreasing trend, and analysis using monthly median indicated that about 79.8% showed a decreasing trend. The Mann-Kendall trend test and Sen's trend test with monthly median values in confidence levels of 95% and 99% showed the same analysis results. In confidence level of 95%, 32% were decreased, 3% were increased and the remains showed no trend. However, in confidence level of 99%, 16% were decreased, 2% were increased and the remains showed no trend. The largest decline rates of water levels were detected mainly at the coast of the northwestern and southwestern parts, which is expected to closely related to the increased pumping in the urban area and tourist resort. 제주도 지하수관측망의 지하수위 측정 자료에 대하여 모수 및 비모수 경향분석을 수행하였다. 분석대상은 2001년부터 1년 이상 관측된 관측정으로 총 106개 관측정 중 94개가 이에 해당된다. 모수분석은 일평균 및 월중앙값을 이용한 선형회귀분석을 실시하였으며 비모수분석은 월중앙값에 대해 Mann-Kendall trend test와 Sen's trend test를 적용하였다. 선형회귀분석 결과 일평균값에 대하여 58.5%가 감소경향을 나타났으며 월중앙간에 대해서는 79.8%가 감소하는 경향을 보였다. Mann-Kendall trend test와 Sen's trend test를 신뢰수준 95%와 99%로 실시한 결과 두 분석 모두 일치하는 결과를 보였다. 95% 신뢰수준에서는 32%가 감소경향을 보였으며 3%가 증가경향을 나타냈고, 나머지 65%는 경향성이 나타나지 않았다. 또 99%신뢰수준에서는 16%가 감소경향을 보였으며 2%가 증가경향을 나타냈고 그리고 나머지 82%에서는 경향성이 없는 것으로 나타났다. 수위하강이 우세하게 나타난 지역은 제주도 북서부 및 남서부의 해안지역으로 도시 및 관광지에서의 다량의 지하수 양수와 관련 있는 것으로 사료된다.

강원도 및 경기도 소재 유류오염지역의 수질특성, 발현 생분해능과 오염물질 저감속도

최현미,이진용,박유철,Choi, Hyun-Mi,Lee, Jin-Yong,Park, Yu-Chul 한국지하수토양환경학회 2010 지하수토양환경 Vol.15 No.2

This study focused on the groundwater quality, biodegradability and attenuation rate at the petroleum contaminated sites of Kangwon and Gyeonggi Provinces, Korea. For groundwater quality, Kangwon site showed chemical compositions of $Ca-SO_4+Cl$, $Ca-HCO_3$ and $Na+K-HCO_3$ types, while Gyeonggi site showed chemical compositions of $Ca-SO_4$, $Ca-HCO_3$ and $Na-HCO_3$ types. $Na+K-HCO_3$ and $Na-HCO_3$ types were detected only in February. Among many biodegradation processes, the majority was attributed to biodegradation from denitrification in both area. In Kangwon site, biodegradation from denitrification occupied 63.5%, and in Gyeonggi site it was 39.45%. Biodegradation from the most efficient aerobic respiration occupied 7.12% in Kangwon site, while Gyeonggi site in it did 27.29%. Point attenuation rate of BTEX in Gyeonggi site (GW-22) was 0.0182 $day^{-1}$, half life of BTEX was 84 days, and thus 124 days (0.34 year) would be required to clean up this site. Mean of point attenuation rate of TPH in Kangwon site was 0.0088 $day^{-1}$, mean of half life was 257 days, and thus 462 days would be required to clean up the site. Mean of point attenuation rate of TPH in Gyeonggi site was 0.0387 $day^{-1}$, mean of half life was 55 days, and thus remediation time was calculated as 99 days.

다중지능이론에 근거한 유아 중국어 초기 도입 단계 교수요목 설계

崔賢美(Choi, Hyun-mi) 중국어문학연구회 2014 중국어문학논집 Vol.0 No.85

반곡물법동맹의 역할과 그 영향

최현미(Choi Hyun Mi) 대구사학회 1992 대구사학 Vol.43 No.1

N/A

농촌지역 결혼이주여성의 우울 영향요인 연구

최현미(Choi, Hyun Mi),Mikyung Kim-Goh,윤명숙(Yoon, Myeong Sook) 경성대학교 사회과학연구소 2013 社會科學硏究 Vol.29 No.3

본 연구는 농촌지역결혼이주여성들의 부부폭력피해경험, 결혼만족도, 사회적 지지가 우울에 미치는 영향을 살펴보기 위한 연구이며, 이를 통해 결혼이주여성의 정신건강증진을 위한 개입근거를 제공하기 위한 목적으로 수행되었다. 경기, 충청, 전라 3개 권역의 농촌지역에 거주하는 결혼이주여성 206명을 대상으로 가정폭력피해경험, 결혼만족도, 사회적지지, 음주문제의 영향력을 위계적 회귀분석을 사용하여 분석하였다. 연구결과 첫째, 결혼이주여성의 결혼형태는 양쪽 모두 초혼인 경우가 가장 많았고, 국적은 베트남, 중매로 만나게 된 경우가 가장 많았으며, 자녀가 있는 경우가 77.7%로 나타났다. 둘째, 연구대상자들은 48.2%가 부부폭력을 경험하였으며, 언어적 폭력, 경제적 폭력, 사회적 고립 순으로 가정폭력을 경험하는 것으로 나타났다. 또한 사회적지지 중 가족 및 친구로부터의 지지를 상대적으로 높게 인지하는 것으로 나타났다. 셋째, 인구사회학적 특성에 따른 우울수준의 차이를 비교한 결과,월 소득이 150만원 이하집단, 본인 문제음주군,배우자가 문제음주군인 경우 우울수준이 더 높은 것으로 나타났다. 넷째, 남편의 문제음주,가정폭력경험은 우울수준과 정적 상관관계를 나타냈고,경제적 수준,결혼만족도,사회적 지지는 우울수준과 부적 상관관계를 나타냈다. 다섯째, 위계적 회귀분석결과 결혼만족도, 부부폭력피해경험, 사회적지지 순으로 우울수준에 영향을 미치는 것으로 나타났다. 즉, 결혼생활에 만족할수록, 부부폭력피해경험이 적을수록, 사회적 지지가 높을수록 우울수준이 낮아지는 것으로 나타났다. 이러한 연구결과를 토대로 농촌지역결혼이주여성들의 정신건강문제에 대한 개입의 필요성을 제언하고,정신건강 증진을 위한 제언 및 후속 연구방향을 제언하였다. This study aimed to improve the conditions of mental health of married immigrant women by finding out the impact factors on depression among them in rural areas. The data was collected from the sample of 206 married immigrant women living in rural areas of Gyeonggi, Choong-cheung and Jeolla provinces and analyzed through the stepwise regression method. Most of them represented that both partners were first married and met each other through match-making, while the ethnic background were Vietnamese, and 77.7% of them had children. As the result of investigating the impact of drinking problems, family violence experiences, marital satisfaction and social support on depression among these women, all of three variables except drinking problems were found significant to predict the level of depression among them. The biggest impact factor was ‘marital satisfaction’ followed by ‘family violence experiences’ and ‘social support’. Based on these result, we suggested that we need more attention to mental health issues of married immigrant women and to establish official and non-official social support systems, as well as to implement couple-based enrichment programs in order to improve the mental health of married immigrant women in rural area.

19세기 런던의 길거리 음식과 노동자층의 식생활

최현미 ( Choi Hyun Mi ) 영국사학회 2019 영국연구 Vol.41 No.-

이 논문은 19세기 런던에서 유통되었던 길거리 음식들을 통해 산업화 이후 노동자들의 삶의 실태 중 특별히 식생활의 구체적인 실상을 이해하고자한다. 산업화 이후 대도시들의 급증한 인구들에게 식량을 공급하였던 시설로 다양한 형태의 식당시설들이 있었는데, 런던 시의 많은 노동자들과 빈민들이 이용하였던 것은 길거리 행상과 노점상들이 제공하였던 길거리 음식이었다. 길거리음식은 고·중세부터 존재해왔으나, 산업화이후 더욱 다양하고 풍성해졌으며, 주요 소비자는 노동자들이었다. 노동자들이 길거리 음식을 애용할 수밖에 없었던 제사정은 산업화 이래 달라진 노동자들의 라이프스타일 그리고 조리도구 시설을 갖출 수 없었던 협소한 주거 환경이나 부족한 재정능력 그리고 조리과정에 소용되는 부대비용의 절감 때문이었다. 길거리 음식은 노동자들의 단순한 식생활의 한계를 보충해 주었던 생활의 먹거리였을 뿐만 아니라, 노동자들에게는 매일의 노동에 필요했던 단백질과, 탄수화물, 지방 등의 영양소와 에너지를 충족시킬 수 있었던 에너지원이었다. This article aims to examine the realities of London’s street foods in the 19th century and the diet of London labourers who had consumed various street foods in Victoria period. It was an important task to provide required grains of corn, cereal and foods to the Londoners after industrialization. By the way, it was many of street vendors and street stalls that usually provided daily foods for the London labour and the poor, especially working men and boys. There were various street foods, that is, meal foods like hot eel, pea soup, pickled whelk, fried fish, sheep's trotter, baked potatoes, ham-sandwiches, muffins, meat mince pie, fruit-pies and hot beverage like tea, coffee, and the alcohol like ginger-beer, wine etc. Most labourers used to buy street food. It was due to the changed life style of the labourer after Industrialization and the absence of appropriate cooking or kitchen facilities such oven, iron-range under the circumstance of their poor housing. In spite of differences in weekly wage among skilled-workers, unskilled-labourers and mechanic labourers, most labourers used to buy street foods regularly because that was cheaper and had some advantages. So the street foods completely suited life style of Lodon’s labourers and poor people. It is identified that in spite of widespread adulteration of the 1850s in London, the street foods provided substantial diet and required energy for London’s labourers and poor people.