MEE법으로 성장한 InAs/GaAs 양자점의 발광특성

오재원,변혜령,류미이,송진동,Oh, Jae Won,Byun, Hye Ryoung,Ryu, Mee-Yi,Song, Jin Dong 한국진공학회 2013 Applied Science and Convergence Technology Vol.22 No.2

Migration-enhanced epitaxy 성장한 InAs/GaAs 양자점(quantum dots)의 광학적 특성을 PL (photoluminescence)과 Time-resolved PL 이용하여 분석하였다. InAs 양자점은 In을 9.3초 공급하고 5초 차단한 후 As을 3초, 4초, 6초, 또는 9초 공급하고 5초 차단하는 과정을 3회 반복하여 성장하였다. As을 3초 공급한 시료의 PL 피크는 1,140 nm에서 나타나고, PL 세기는 다른 세 시료에 비해 매우 약하게 나타났다. As 공급시간을 3초에서 증가하였을 때 모든 PL 피크는 1,118 nm로 청색이동하여 나타났으며, PL 세기는 증가하였다. As을 6초 공급한 시료의 PL 세기가 가장 강하게 나타나고, 반치폭(full width at half maximum)도 가장 좁게 나타났다. 이러한 결과는 양자점의 밀도와 균일도(크기변화)로 설명된다. 또한 발광파장에 따른 PL 소멸시간은 PL 피크 근처에서 가장 길게 나타났다. The luminescence properties of InAs/GaAs quantum dots (QDs) grown by a migration enhanced epitaxy method have been investigated by using photoluminescence (PL) and time-resolved PL measurements. The MEE method supplies materials in a series of alternate depositions with migration enhancing time between each deposition. After In source was supplied for 9.3 s, the growth was interrupted for 5 s. Subsequently, As source was open for 3 (AT3), 4(AT4), 6 (AT6), or 9 s (AT9), and the growth was interrupted for 5 s again. This growth sequence was repeated 3 times for the growth of InAs QDs. The PL peak of the AT3 was 1,140 nm and the PL intensity was very weak compared with that of the other three samples. The PL peak of all samples except the AT3 sample was 1,118 nm, which is blueshifted from 1,140 nm, and the PL intensity was increased compared to that of the AT3. These results can be explained by the increased QD density and the improved QD uniformity. The AT6 sample showed the strongest PL intensity and the narrowest full width at half maximum. The PL decay time of AT6 increased with increasing emission wavelength from 940 to 1,126 nm, reaching a maximum decay time of 1.09 ns at 1,126 nm, and then decreased as the emission wavelength was increased further.

Acoustic Cues to the Perception of the Place of Articulation in English Stops

Ahn, Mee-Jin 배재대학교 인문과학연구소 2005 人文論叢 Vol.22 No.-

이 논문은 영어 파열음의 위치자질을 인식하는데 필요한 음향 단서에 관한 연구이다. 실험의 결과는 페쇄단계, 파열, 기식음, 포만트 추이 각각 모두가 파열음의 위치자질에 대한 음향 단서임을 보여주고, 특히 이 인지 실험은 위치동화 등의 음운현상에 나타난 CV와 VC의 비대칭 현상도 설명해 준다. 그러나 무성파열음의 경우, 폐쇄나 파열, 기식 등의 단서를 제외하고 모음 부분만을 들려주었을 때에는 위치자질을 인식하는데 CV와 VC의 비대칭은 나타나지 않음을 보여준다. 또한 경구개 파열음의 위치자질의 인식에 있어서는 순음이나 치경음보다 파열 단서에 더 많이 의존한다는 결과를 나타낸다.

농산물과 가공식품의 선택기준과 품질개선에 관한 대구지역 주부 소비자들의 인식

윤진숙,오현미 啓明大學校 生活科學硏究所 1999 科學論集 Vol.25 No.-

The purpose of this study was to contribute to the establishment of quality improvement program of farm products and processed food, and to provide the direction of consumer education. A survey was conducted to figure out the differences in the consumer perception of farm products and processed foods according to age group and education level. From the citizens in Tague area, 509 housewives were selected as sample subjects by stratified random sampling procedure. It appeared the main criteria for purchasing farm products was significantly different among age group. Most of consumers(84.5%) thought that food safety of farm products did not belong to safe level. The way to distinguish imported farm products was significantly different among education level. While most of consumers(79.4%) check up the place of origin, the tendency was significantly different among education level. Higher educated group utilized labelling system for the place of origin more often than others to distinguish foreign products. Perception on the farm-brand processed food products was significantly different among age group and education level : it appeared that the younger age group and higher educated group tended to purchase more farm-brand processed food products than other groups.

대구지역 주민들의 식행동과 일부 건강상태 지표와의 관련성(Ⅰ) : 주부들의 식행동과 비만정도를 중심으로 Focused on Dietary Behaviors and Obesity of Housewives

윤진숙,최미자 한국식생활문화학회 2003 韓國食生活文化學會誌 Vol.18 No.1

This study was intended to collect the baseline information on dietary behavior of adults to develop nutrition education program in the context of health promotion at community level. Nutrients intake of 135 housewives were assessed by 24 hour recall methods. Also food habits, nutrition knowledge and attitude were investigated by self-administered questionnaires. Our results indicated dietary intake of calcium and vitamin B_2 were insufficient when they were compared to Korean recommended dietary allowances(RDA). Among five food groups, intakes of milk and dairy product was inadequate as compared to the recommended amount. When we compared the fatness indices to self-evaluated meal problems, overeating and speedy eating were significantly related to fatness indices. Fatness indices such as relative body weight(RBW) and body mass index(BMI) were significantly higher in the subjects who self-evaluated their unsound food behavior as overeating. However, there were no significant difference of food habit score and nutrition knowledge among groups classified by fatness or meal problem. Body fat ratio, frequencies of night snack and skipping meal significantly increased with age. Food habit score was positively related to health-concerned attitude and active attitude toward change. We concluded that nutrition education program for housewives should include detailed strategies to modify unsound food behaviors for healthy weight.

1986학년도 덕성여자대학 신입생의 특성에 대한 조사연구

吳眞美 덕성여자대학교 학생생활연구소 1987 學生生活硏究 Vol.7 No.-

1996년도 덕성여대 신입생 특성에 관한 연구

오진미,김정호 덕성여자대학교 학생생활연구소 1996 學生生活硏究 Vol.12 No.-

조사대상은 1996년도 전체 신입생 중 60.2%인 777명이었다. 조사내용은 인적사항, 가정환경, 대학전반, 대학생활, 가치관, 자신에 대한 지각의 7개 영역이다. 조사결과를 요약하면 다음과 같다. 1.신입생들은 대부분 서울에서 거주하고 있으며 중산층, 고학력, 핵가족에서 출생하고 성장하였다. 이같은 추세는 매년 증가하고 있다. 2.학생들의 생활태도에 영향을 주는 것은 실용적이고 현실적인 동기들이다. 3.대학에 대한 전통적인 이해보다는 취업을 위한 준비기관으로 이해하는 경향이 있다. 4.사회, 문화적 변화가 학교생활에서도 투영되고 있다. 5.학부모들의 학교에 대한 관심이 점증하고 있다. 이러한 결과는 예년과 크게 다른점이 없다. 그러나 신입생들은 예년보다 개방적이고, 실제적으로 바뀌고 있는 경향이 있다. The present survey was conducted to investigate various chracteristics of freshmen in 1996. The data were collected from 777 (60.2%) out of 1300 freshmen. Compared with the previous surveys, there are no significant differences However, the following findings should be considered ; 1.Most of the students come from middle class, highly educated, Seoul resident , nuclear family. 2.Most of the students have realistic and practical motivations. 3.The traditional concept of university, which means academic institute, is changing Most of the students have the understanding of university as practical institute for their future career. 4.Social and cultural chanties are reflected on the students' campus life. 5.Parents' concern about university is gradually increasing.

흔치않은 대상포진 치험 2예 : 비전형적 부위와 다른 부위로 재발한 예 Unusal Dermatome and Recurs Other Dermatome

김정미,조은경,조정선,최용석,한영수,한정호,김두응,최진영 건국대학교 의과학연구소 2004 건국의과학학술지 Vol.14 No.-

Herpes zoster is well known as an acute, self-limited disease of unilateral sensory dermatome caused by varicella-zoster virus and characterized by grouped vesicular skin eruption and pain over several dermatomes as well as single. This virus usually affects the thoracic dermatome and there are a few reports that this virus involves lower lumbar or sacral area, and recurrent cases. We experienced 2 cases that zoster virus involved L4 or S2 dermatome and left typical skin lesions, of which one was a recurrent case involving different dermatome at an interval of 8 years and the other was a rare case involving sacral dermatome.

감마선 조사 랫트의 고환에서 fibronectin의 발현

정진우,김희철,김정태,안미정,이지영,신태균 제주대학교 방사능이용연구소 2005 방사선응용과학연구소논문집 Vol.19 No.-

식품분석에 의한 아연 섭취량과 소변 배설량의 비교연구

윤진숙,오현미 啓明大學校 生活科學硏究所 1997 科學論集 Vol.23 No.-

Abstract This study was intended to investigate the relationship of zinc intake and urinary excretion in adult women. Information on the dietary zinc intake for the consecutive 5 days was collected using weighing method for nine healthy women. Urinary zinc excretion during the same period was also measured. In order to figure out the difference of zinc intake due to dietary assessment methodology, dietary intake was measured by weighing method for three days. At the same time, the meals subjects consumed each day were collected to analyze daily zinc intake of each subject. Average zinc intake for 5 consecutive days was 5.9±0.6mg, which was equivalent to 49% of Korean Recommended Dietary Allowances(RDA). Average urinary zinc excretion during the same period was 0.31±0.18mg, When mean dietary zinc intake was assessed by using weighing method for 3 consecutive days, it was 5.7±1.2mg which was equivalent to 48% of Korean RDA. However, average dietary zinc intake from collected food sample was 6.3±1.8mg by chemical analysis. Based on dietary zinc intake and urinary zinc, we concluded zinc status of adult female participated in this study was marginally deficient.

당뇨 환아들의 단기 영양교육의 효과에 관한 연구

김진희,김성미 동아시아식생활학회 2000 동아시아식생활학회지 Vol.10 No.1

The purpose of this study was to investigate the effect of knowledge and practice of diet therapy on diabetic control in Insulin-dependent Diabetics, The subjects were 31 patients(male 15, female 16) aged 7 to 16 years old who participated pediatric health camp. The average of diabetic duration was 4.2 years. 48.4% of subjects has the motive to diabetics diagnosis because of 3-plentiful symptom in both group. The average of height was 151.5 cm for male and 141,4 cm for female, the average weight was 43.1 kg for male and 38.6kg for female, In PIBW, underweight was 53.3%1 for male, 37,5% for female, normal weight was 40.0% for male, 56.31/16 for female, The fasting blood glucose was 173.5 mg/dl for males, 202.9 mg/dl for females. Postprandial blood glucose was 138.8 mg/dl for males, 194,3 mg/dl for females. Energy intakes were 2,100-2,600 kcal for males and 1,800-2,600 kcal for females. Energy intake of the subjects was higher than that of RDA, Carbohydrate, protein and fat ratio was 58 : 17 : 25. The mean score of knowledge before education on diet therapy was 17,07±2,02 for males, 15,19±3.58 for females. The man score of knowledge after education on diet therapy was 17,93±1,33 for males, 17.31 ±1.49 for females.