다공성 (Ca,Mg)_0.15Zr_0.7O_1.7 세라믹스의 제조 및 특성

김복희,김상희,최은실,Kim, Bok-Hee,Kim, Sang-Hee,Choi, Eun-Sil 한국결정성장학회 2011 한국결정성장학회지 Vol.21 No.2

다공성 $(Ca,Mg)_{0.15}Zr_{0.7}O_{1.7}$ 세라믹스를 제조하고 기공률 및 기계적 강도를 측정하여 SOFC 세라믹 지지체로서 응용 가능성을 조사하였다. 출발물질로 $ZrO(NO_3)_2{\cdot}2H_2O$를 선정하고 이를 이온 교환수에 용해하여 glycine을 첨가하여 glycine 연소법으로 $ZrO_2$ 분말을 합성하고 $800^{\circ}C$에서 하소하여 $ZrO_2$ 원으로 사용하였다. 합성한 $ZrO_2$ 분말, dolomite, 그리고 pore former로 carbon black을 혼합하고 $1200{\sim}1400^{\circ}C$로 소성하여 다공성 $(Ca,Mg)_{0.15}Zr_{0.7}O_{1.7}$ 세라믹스 소결체를 제조하였다. $(Ca,Mg)_{0.15}Zr_{0.7}O_{1.7}$ 세라믹스의 결정상은 단일상의 cubic상이었다. $1300^{\circ}C$ 에서 소성한 $(Ca,Mg)_{0.15}Zr_{0.7}O_{1.7}$ 세라믹 소결체는 carbon black의 양이 증가할수록 기공률이 32 %에서 55 %까지 증가하였으며 기계적 강도는 90 MPa로부터 30 MPa까지 감소하였다. [ $(Ca,Mg)_{0.15}Zr_{0.7}O_{1.7}$ ]ceramics was investigated for the application to SOFC ceramic supporter with high porosity and mechanical strength. $ZrO_2$ powder was prepared by combustion method with glycine using the solution of $ZrO(NO_3)_2{\cdot}2H_2O$ dissolved into deionized water and calcination at $800^{\circ}C$ Porous $(Ca,Mg)_{0.15}Zr_{0.7}O_{1.7}$ ceramics was prepared by sintering the mixture of prepared $ZrO_2$ powder, dolomite and carbon black at $1200{\sim}1400^{\circ}C$ for 1 h. The open porosity ofthe $(Ca,Mg)_{0.15}Zr_{0.7}O_{1.7}$ ceramics sintered at $1300^{\circ}C$ was over 30 % and increased linearly with the amount of carbon black. The crystal structure of $(Ca,Mg)_{0.15}Zr_{0.7}O_{1.7}$ ceramics consisted of single cubic phase. The open pore of this ceramics was connected continuously and distributed well on the whole. This ceramics sintered at $1300^{\circ}C$ showed the porosity from 32 to 55 % and mechanical strength from 90 MPa to 30 MPa with increasing the content of added carbon black.

광주지역 일부 저소득층 여자노인에서 지역사회 영양중재 프로그램 적용에 따른 식행동 변화 및 영양상태 개선 효과

김복희,양지숙,계승희,이윤나,Kim, Bok Hee,Yang, Ji-Suk,Kye, Seung-Hee,Lee, Yoonna 한국식품영양학회 2014 韓國食品營養學會誌 Vol.27 No.3

This study was conducted to measure the effect of a community-based nutritional intervention program on dietary behaviors and nutrient intakes of low-income elderly women in Korea. The subject of the study was a group of 88 elderly women using the free meal service in Dong-gu, Gwangju city in Korea. The study was carried out from April to July 2009, and the pretest, application of nutrition education, and post-test were applied in each stage. This community-based nutrition intervention program consisted of snack supplement and nutrition education provided three times a week and 36 times in total. The nutrition education was led by the nutritionists and professionals using various educational media. Snack supplement included were milk, soymilk, carrot juice, bread, yogurt, and bananas. The result of pretest showed that the nutrient intakes of the subjects were much below the Recommended Nutrient Intake (RNI) level of Dietary Reference Intake for Koreans. Comparison of the dietary behavior score and nutrient intakes before and after the nutritional intervention program indicated that the food behavior score increased from 3.1 to 5.6 (P<0.001) and intake of energy, protein, carbohydrate, thiamin, niacin, vitamin C, iron, and potassium of the subjects all increased significantly (P<0.05). Mean Adequacy Ratio (MAR) of their nutrient intakes was also improved from 0.53 to 0.64 (P<0.01). These results indicated that the nutrition intervention program conducted in this study was effective in improving dietary behavior and nutrient intakes of elderly women in local community.

$Li_{2}O-Al_{2}O_{3}-SiO_{2}$계 저팽창 결정화 유리의 특성

김복희,고정훈,남오정,강우진,이창훈,Kim, Bok-Hee,Ko, Jung-Hoon,Nam, O-Jung,Kang, Woo-Jin,Lee, Chang-Hoon 한국결정성장학회 2009 한국결정성장학회지 Vol.19 No.2

저열팽창계수를 갖는 재료를 개발하기 위하여 $Li_{2}O-Al_{2}O_{3}-SiO_{2}$계 glass-ceramics를 제조하고 그 특성을 조사하였다. 이 계의 유리를 $775^{\circ}C$에서 2시간 가열하여 핵생성시키고 $825{\sim}900^{\circ}C$로 가열하여 2시간 결정화하였다. 결정화 유리의 결정구조는 단일상의 $\beta$-quartz solid solution($Li_{x}Al_{x}Si_{1-x}O_{2}$)이었고, 열팽창계수는 $25{\sim}300^{\circ}C$에서 $4.40{\times}10^{-7}{\sim}1.33{\times}10^{-6}K^{-1}$를, 그리고 $25{\sim}800^{\circ}C$에서는 $1.56{\times}10^{-6}{\sim}2.53{\times}10^{-6}K^{-1}$를 보였으며 저온 영역의 열팽창율보다는 고온 영역의 열팽창율이 더 높은 값을 보였다. 이 계의 결정화 유리의 기계적 강도는 결정화 온도에 의존하지 않고 대체로 110 Mpa의 높은 값을 보였다. The glass-ceramic of the $Li_{2}O-Al_{2}O_{3}-SiO_{2}$ system was investigated to develop the low thermal expansion materials. The glass of this system was heat treated at $775^{\circ}C$ for 2 h for nucleation and subsequently at $825{\sim}900^{\circ}C$ for 2 h for crystallization. The crystal structure of the glass-ceramic of this system was a single phase of $\beta$-quartz solid solution($Li_{x}Al_{x}Si_{1-x}O_{2}$). The thermal expansion of the glass-ceramic showed $4.40{\times}10^{-7}{\sim}1.33{\times}10^{-6}K^{-1}$ between $25{\sim}300^{\circ}C$ and $1.56{\times}10^{-6}{\sim}2.53{\times}10^{-6}K^{-1}$ between $25{\sim}800^{\circ}C$, higher than lower temperature range. The mechanical strength remained almost same at around high 110 MPa with heating temperature changes.

광주지역 일부 대학생에서 식생활 요인과 스트레스 인지수준과의 상관관계

김복희,심방글,정은,Kim, Bok Hee,Shim, Bang Geul,Jeong, Eun 한국식품영양학회 2014 韓國食品營養學會誌 Vol.27 No.5

The purpose of this study was to estimate the relationships between dietary factors and the stress perception levels of College students. A survey was conducted in June, 2010, targeting 332 college students in Gwangju. General environmental factors, stress perception levels, dietary behaviors, and dietary action guide performance of the subjects were evaluated by questionnaire, and food intakes was determined by the 24-hour recall method. The results are summarized as follows.: The score of frequency experiencing was $45.1{\pm}16.9$ for male students, and $47.0{\pm}16.7$ for female students. The importance scores were $50.8{\pm}18.5$ for males, and $53.3{\pm}18.7$ for females. The total score for dietary action guide performance was $39.6{\pm}7.2$ for males and $40.6{\pm}6.5$ for females. Nutrient intake levels were evaluated based on dietary reference intake (DRI), revealing energy intakes to be 68.5% EER in males and 73.9% in females. The mean intakes of nutrient were 54.2% RI for calcium, 73.6% RI for riboflavin, and 51.2% RI for vitamin C but 203.6% AI for sodium, which indicates an imbalance in nutrient intake. Analysis of the correlations between stress perception levels and dietary factors, scholarship achievements, financial problems, future problems, value senses, and family relationships revealed significant correlations with general environment factors, dietary behaviors, Dietary action guide performance, and nutrient intakes (p<0.05). The higher the stress perception levels of the students, the higher the energy, coffee and alcohol intake, which predicts that appropriate stress control in college students will lead to better dietary habits. It is expected that the results above will be used as basic data for the development of proper nutrition education programs and stress control strategies.

고대 로마 전차경기의 문화적 의미

김복희 ( Bok Hee Kim ),오동섭 ( Dong Soub Oh ) 한국체육사학회 2008 체육사학회지 Vol.13 No.3

( 1 - X ) ZrO2-XC2O 계 세라믹스 미분말의 제조

김복희(Bok Hee Kim) 전북대학교 공학연구원 (구 전북대학교 공업기술연구소) 1992 工學硏究 Vol.23 No.-

광주지역 일부 청소년의 트랜스지방 함유 간식의 상대적 섭취빈도에 따른 식행동, 체성분 조성, 영양소 섭취량 비교

김복희 ( Bok Hee Kim ),박복천 ( Bok Cheon Park ),이소정 ( So Jung Lee ) 韓國食生活文化學會 2008 韓國食生活文化學會誌 Vol.23 No.3

JICA 해외협력대 사업 50년의 성과와 교훈: 사람중심 개발과 글로벌 인재 양성을 위한 제언

김복희(Bok-Hee Kim) 한국국제협력단 2019 국제개발협력 Vol.14 No.1

국제사회는 자원봉사활동을 ‘평화와 개발을 위한 글로벌 자산으로서 강력하고 범분야적(cross-cutting) 실행 수단’이라는 데 주목하고 있다. 한국과 일본은 정부 주도로 대규모 해외봉사단을 파견 중인 대표적인 공여국이다. 그러나 미국이나 영국 등 다른 선진공여국의 해외봉사단 파견사업과는 사업목적이나 운영방식 등에서 많은 차이점을 갖고 있다. 일본 청년해외협력대(Japan Overseas Cooperation Volunteers, 이하 JOCV)는 기술협력을 통한 개발도상국의 경제사회 발전, 상호이해 증진, 청년육성에 공헌하기 위한 일본판 피스코(Peace Corps) 사업으로 추진되었다. 이 글은 일본 국제협력기구(Japan International Cooperation Agency, 이하 JICA)가 지난 50여 년간의 JOCV 사업을 학제적으로 연구한 결과를 중심으로 다양한 국내외문헌 및 통계자료를 활용하여 청년해외협력대의 역사와 발전과정, 다양한 제도와 참여동기 및 활동 유형, 사업 성과를 살펴보고, KOICA에 주는 정책 시사점 및 제언을 도출한 것이다. The international community involving volunteer program for development has noted that volunteerism in the era of the 2030 Agenda for Sustainable Development is not the only answer but a powerful and cross-cutting means of implementing truly people-centered development model as a global asset for peace and development. Korea and Japan are distinguished donors that are sending large-scale international volunteers initiated by government to partner countries. There are differences in its purpose, types and operational system in volunteer program with other advanced donor countries such as USA and UK, etc. The Japan Overseas Cooperation Volunteers (JOCV) Program is widely recognized as a representative of Japan"s Official Development Assistance (ODA) since its inauguration in 1965 with a range of objectives such as development assistance, mutual understanding between Japan and developing countries, and fostering the youth through various technical cooperation. On the occasion of the JOCV"s 50th milestone anniversary in 2015, JICA conducted the research project titled "An Interdisciplinary Study of Japan Overseas Cooperation Volunteers” from December 1, 2011 to March 31, 2016 with the aim to grasp the significance of JOCV in terms of its international, social, and historical role, and clarify the future direction of Japan"s efforts for international cooperation. This paper is to examine the history and development process of JOCV program, its institutional system, motives and types, performance and lessons learned from implementing volunteer program for more than 50 years, using the JICA"s research results on "An Interdisciplinary Study of JOCVs" and other documents and data, etc. Based on this study, the key policy implications and recommendations for KOICA "s volunteer program which is celebrating its 30th anniversary next year are presented, at three categories including performance management; institutional and operational management; promoting global human resources development and social returns to the home country.

고대 올림피아 제전경기의 종교적 특징

김복희 ( Bok Hee Kim ),오동섭 ( Dong Soub Oh ) 한국체육사학회 2005 체육사학회지 Vol.15 No.-

고대 그리스의 운동경기와 희생제의

김복희 ( Bok Hee Kim ) 한국체육사학회 2010 체육사학회지 Vol.15 No.1