친환경 광역단지 내 젤라틴·키틴분해미생물을 이용한 유기 벼 생산

최승희,차광홍,서동준,박흥규,권오도,안규남,이재학,김길용,정우진,Choi, Seung-Hee,Cha, Kwang-Hong,Seo, Dong-Jun,Park, Hung-Gyu,Kwon, Oh-Do,An, Kyu-Nam,Lee, Jai-Hak,Kim, Kil-Yong,Jung, Woo-Jin 한국유기농업학회 2018 韓國有機農業學會誌 Vol.26 No.4

1. 유기재배구의 토양조건은 배수가 약간 불량한 미사질 양토인 전북통 보통답으로 유효규산이 높은 것을 제외하고는 우리나라 논토양의 화학적 성분과 평균 함량이 유사하였다. 2. 관행재배구와 유기재배구 간에 생육은 초장, 분얼수, 이삭수, 이삭길이 모두 관행재배구에서 높은 것을 확인하였으며 이삭당 입수와 등숙율은 유기재배구에서 다소 높게 나타났다. 3. 병해충 발생정도는 물바구미, 잎집무늬마름병, 혹명나방, 도열병이 유기재배구에서 많이 발생하였고, 이삭누룩병은 관행재배구에서 조금 더 많이 발생하였다. 4. 주요 관리대상 병해충인 잎집무늬마름병(y=-0.2848x+199.57, $R^2=0.704^*$), 혹명나방 발생(y=-0.1361x+92.535, $R^2=0.8049^*$)과 쌀 수량과의 관계에서 유의성이 높은 부의 상관관계가 나타났다. 5. 백미 품질은 유기재배구에서 파쇄미의 증가로 완전립 비율이 낮았지만, 단백질함량이 관행재배구에 비해 낮아 전반적인 품질 및 윤기치가 높아졌다. 6. 쌀 재배 순수익은 관행재배구에서 36만원/10a, 유기재배구에서 61만원/10a로 유기재배구의 순수익이 68% 높게 나타났다. This study was carried out to investigate the economic value of organic rice production using gelatin chitin microorganisms in eco-friendly complex, Gongsan, Naju city. The soil condition of experiment paddy field was Jeonbuk series and silt loam with a slightly poor drainage. Except for the high effective silicate, the chemical characteristics of soils used were included in the optimum range of paddy soils in Korea. In growth, plant length, tiller number, ear number, and ear length were observed to be higher in conventional paddy fields than organic paddy fields. However, number of grain per panicle and grain filling ratio (%) were higher in organic paddy fields than conventional paddy fields. Incidences of diseases and insect pests were slightly higher in the organic paddy fields. Water weevil, sheath blight, rice leaf roller and rice blast were more occurred in organic paddy field. On the other hand, false smut was higher occurred in conventional paddy field. There was a significant negative correlation between rice sheath blight and rice leaf roller, and rice yield. In the milled rice quality, the quality of organically cultivated milled rices was lower by the increase of broken rice than that of conventionally cultivated milled rices. The quality and palatability of rice were higher in organic cultivation with decreasing of protein content. Net income of conventionally and organically cultivated rice was 360,000 won/10a and 610,000 won/10a, respectively. Premium net income of the organically cultivated rice was 68%.

고효율 광전자 소자 응용을 위한 전 무기 할라이드 페로브스카이트 나노결정 합 성 및 필름 제작

최승희,김현빈,유정현,권석빈,정성국,송영현,윤대호,Choi, Seung Hee,Kim, Hyun Bin,Yoo, Jung Hyeon,Kwon, Seok Bin,Jeong, Seong Guk,Song, Young Hyun,Yoon, Dae Ho 한국결정성장학회 2018 한국결정성장학회지 Vol.28 No.3

할라이드 페로브스카이트 나노결정은 고색순도 및 우수한 발광특성을 바탕으로 LED 응용에 대한 연구가 활발히 진행되고 있다. 고온주입법을 통하여 $CsPbX_3$(X = I, Br, and Cl) 나노결정을 합성하였고 할로젠 이온의 조성 변화를 통하여 발광파장을 제어하였다. 고분자 바인더를 사용하여 녹색과 적색의 필름을 제작하였다. 합성된 나노결정 및 제작된 필름의 우수한 광특성을 확인하였고, 이를 InGaN 청색 LED칩에 적용하여 우수한 색영역의 wLED를 구현하였다. Halide perovskite nanocrystals have become attractive for LED applications due to their high color purity and excellent luminescent properties. $CsPbX_3$ (X = I, Br, and Cl) nanocrystals were synthesized by hot-injection method and the emission wavelength was controlled by changing the composition of halide ion. Green- and red-emitting films were fabricated using a polymer binder. The outstanding optical properties of the synthesized nanocrystals and fabricated films were confirmed. The wLED designed by green- and red-emitting perovskite nanocrystal films on blue InGaN LED was characterized.

자동차용 레이저 헤드램프를 위한 형광체 세라믹 제조 및 발광 특성 분석

최승희,권석빈,유정현,김재필,김완호,정호중,김보영,윤대호,송영현,Choi, Seung Hee,Kwon, Seok Bin,Yoo, Jung Hyeon,Kim, Jae Pil,Kim, Wan Ho,Jeong, Ho-Jung,Kim, Bo Young,Yoon, Dae Ho,Song, Young Hyun 한국결정성장학회 2020 한국결정성장학회지 Vol.30 No.2

본 연구에서는 차세대 자동차 레이저 헤드램프 적용을 위하여 분무건조법을 통하여 가넷 구조를 갖는 구형의 YAG : Ce 형광체를 합성하였으며 이를 기반으로 형광체 세라믹을 제조하고 광학적 특성을 분석하였다. 분무건조법 기반으로 합성된 구형의 YAG : Ce 형광체를 이용한 형광체 세라믹의 두께를 100 ㎛, 150 ㎛, 200 ㎛로 조절하여 두께에 따른 광변환 효율, 열 소광, 휘도 및 색온도의 광학적 특성을 비교하였다. 연구 결과, 양자효율 및 광속 값은 두께가 150 ㎛ 일 때, 가장 높게 나타났다. 본 연구 결과는 기존의 액상법을 기반으로 한 YAG : Ce 나노 형광체 제조의 고 비용, 저 수율 등의 문제점을 개선한 방법으로 향 후, 형광체 세라믹 제조에 큰 역할을 할 수 있을 것이라 기대된다. In this study, phosphor ceramics were fabricated, and optical properties were analyzed for application to nextgeneration automotive laser headlamps by using a spherical YAG : Ce phosphor with a garnet structure synthesized based on the spray drying method. The thickness of phosphor ceramic using spherical YAG : Ce phosphor was obtained with 100 ㎛, 150 ㎛, and 200 ㎛ to investigate the effect of thickness on optical properties such as light conversion efficiency, heat dissipation, luminance and color temperature. The results of this study are expected to play a significant role in the manufacturing process for the fabrication of phosphor ceramic by solving issues such as the high cost and low yield in the conventional liquid method to manufacture YAG : Ce nano fluorescent materials.

영지의 원형질체 분리 및 재생

최승희(Seung Hee Choi) 한국생약학회 1987 생약학회지 Vol.18 No.1

과학 탐구과정 안내 수업에서 나타난 중학교 과학 영재 학생의 탐구과정에 대한 인지구조 변화

최승희 ( Seung Hee Choi ),박형용 ( Hyoung Yong Park ),김영수 ( Young Soo Kim ) 韓國生物敎育學會 2015 생물교육 Vol.43 No.3

The purpose of this study was to collect fundamental data for developing an efficient scientific inquiry process teaching method. This study examined changes in the 15 gifted middle school students’ cognitive structures which related to the scientific inquiry process as a result of explicit instruction. For the analysis of the changes in the cognitive structures, students were required to organize their own concept maps about the inquiry process with given 33 basic concepts, before and after the explicit instruction on scientific inquiry process. After the explicit instruction, students’ change patterns in each proposition of 34 standard propositions were classified by three change types: A (○→○), B (×→○), and C (×→×). In the type A, students already knew some inquiry process before the instruction. Most propositions of the type A were simply representing the inquiry process stages. In the type B, students properly understood the unknown or misunderstood parts. Especially in controlling variables, most students could properly describe them in their concept maps and they insisted on their importance during the process. However, they felt that it was difficult to build a proper method for controlling variables. In the type C, students could not describe the relations between the variables and the hypothesis in their concept maps, even after the class, if they experienced difficulties during the instruction.

부모 - 자녀간의 촉진적 의사소통

최승희(Seung Hee Choi) 경희대학교 교육발전연구원(구.교육문제연구소) 1991 慶熙大學校 敎育問題硏究所 論文集 Vol.7 No.-

개회사

최승희 ( Seung Hee Choi ) 진단학회 1996 진단학보 Vol.- No.81

개회사

최승희 ( Seung Hee Choi ) 진단학회 1995 진단학보 Vol.- No.79

12세 아동의 우식경험영구치 Significant Caries(SiC) Index에 대한 조사 연구

최승희 ( Seung Hui Choi ),성정희 ( Jung Hee Sung ),이천희 ( Cheon Hee Lee ) 한국치위생학회(구 한국치위생교육학회) 2013 한국치위생학회지 Vol.13 No.6

Objectives: The purpose of the study is to investigate the significant(SiC) index of the 12 year old children`s permanent teeth caries experience. A total of 428 children aged 12 years old were recruited from metropolitan city(215 children) and rural area(213 children) in this study. SiC index was obtained from DMFT index. Data were analyzed by gender, region, and DMFT. Methods: DMFT index and Sic index were analyzed and compared by pit and sealant fissure treatment, dental caries, gender, and areas. A total of 428 children aged 12 years old were recruited from metropolitan city(215 children) and rural area(213 children) in this study. Results: Boy students(6.73) tended to have a higher SiC index than girl students(7.84). There were significant differences(p<0.05). DMFT index in urban area was 2.59, and that in rural area was 3.35. In SiC index, rural children showed a higher index(7.77) than urban children(6.72).There existed a significance between DMFT index and SiC index(p<0.05). Conclusions: It is important to educate and to develop the oral disease prevention program for the high risk group children. This study showed the relationship between DMFT index and SiC index in 12 year old children in urban and rural areas.

농어촌 장애인들의 교육실태와 차별경험

최승희(Choi, Seung Hee) 한국장애인재활협회 2007 재활복지 Vol.11 No.1

본 연구는 2005년도 한국보건사회연구원의 장애인실태조사를 활용하여, 농어촌 장애인 교육의 실태와 교육환경에서의 차별경험을 분석한 것이다. 연구결과 농어촌 장애인들이 도시의 장애인들에 비해서 초등학교, 중학교, 고등학교의 학력이 낮고, 상급학교로 갈수록 농어촌 장애인들의 학교를 다니지 않은 비율이 높아 농어촌 장애인들의 학력수준이 심각하게 낮음을 알 수 있었다. 학교적응은 농어촌 장애인들의 경우가 학교생활에 대한 만족도가 높고, 문제가 없다고 답한 경우가 도시에 비해서 다소 높게 나타났다. 교육욕구와 관련해서는 방과 후 활동지원이 필요하고, 학습도우미 지원이 필요한 것을 알 수 있었다. 학교수준에 따른 차별경험은 초등학교와 고등학교에서의 차별경험이 농어촌지역에서 다소 높게 나타났으나 통계적으로 유의미하지는 않았다. 학교환경에서의 차별경험은 농어촌 지역은 또래로부터의 차별이, 도시지역은 교사와 학부모로부터의 차별경험이 높게 나타났다. 본 연구를 기초로 농어촌 장애인들의 교육실태를 점검함으로써 농어촌지역에 차별화된 특수교육과 교육환경지원이 필요할 것으로 사료된다. This study is to analysis the education and discrimination of the disabled who live in rural community by using 2005 The survey of the disabled. The findings are flowing. First, entrance of elementary. middle, high school is lower the disabled who live in rural community than the disabled who live in urban and suburban. and almost of them have no education experience, especially higher education course, higher rates which the disabled who live in rural community don't have any education course. Second, adaption of school of the rural disabled is better than the urban's disabled. Third, experience of discrimination according to the level of school is higher at elementary and high school of the rural disabled, but this results has no difference statically. And the discrimination to the rural disabled from peer is high among of experience of discrimination from educational environments(teacher, peer, other parents). According to this result, we have the different special education service, curriculum, and management for the rural disabled.