배추 생육 중 토양 수용성 양이온의 경시적 변화 모니터링

김용국(Yong gook Kim),Khok Pros,김경영(Kyoung young Kim),조현종(Hyun Jong Cho),나홍식(Hong Sik Na),한광현(Gwang Hyun Han) 한국토양비료학회 2021 한국토양비료학회 학술발표회 초록집 Vol.2021 No.11

토양의 치환성 이온 함량이 아닌 식물체에 직접 흡수되는 수용성 이온들을 모니터링 하는 것이 중요하다. 배추가 생육하면서 토양 중 수용성 양이온들의 함량이 어떻게 변하는지 확인하고, 각 이온의 농도에 따라 그에 알맞은 처방이 이루어져야 한다. 토양 시료는 경기도 이천시의 배추 밭에서 정식 이후 16, 35, 48, 70일에 처리구별 각 3반복씩 채취하였다. 처리구는 N 기준 무처리구(Nil), NPK 비료 표준 시비량의 50% 처리구(Con), 100% 처리구(Inf), 그리고 표준 시비량의 50% 처리구에 음폐퇴비가 100%(C100), 200%(C200), 300%(C300) 추가된 처리구가 있다. 채취한 토양은 풍건 후 2 mm 체에 거르고 1:5 비율로 증류수 추출하였으며, Whatman No.2 필터를 사용하여 여과한 후 0.45 μm 실린지 필터로 재 여과하였다. 토양 추출액의 분석은 (주)테크넬 POCT 분석 키트를 사용하였다. 화학비료 처리구의 토양 중 Na의 농도비율은 생육기간 중 꾸준히 증가하는 경향이 있었다. 하지만 K의 농도비율은 시간이 지남에 따라 경시적 감소가 명확하였다. 음폐퇴비 처리구의 경우 토양 중 Na의 농도비율은 생육기간 중 증가하는 경향이었으며, 특히 퇴비 처리수준에 비례하여 높아졌다. Mg의 농도비율은 모든 처리구에서 비슷한 수준을 유지하였다. 모든 처리구에서 토양 중 K의 농도비율 감소는 Na 농도비율의 증가와 상관관계가 높았다.

실업계 고등학교의 조직 효과성과 관련 변인 간의 인과적 모형

한홍진,나승일 한국농업교육학회 2006 농업교육과 인적자원개발 Vol.38 No.4

이 연구는 실업계 고등학교의 조직 효과성과 교사 임파워먼트, 교장 변혁적 리더십, 직무특성, 조직 문화 간의 구조적 인과관계를 밝히는데 그 목적이 있었다. 연구목적 달성을 위해 조직 효과성에 영향을 미칠 가능성이 있는 관련 변인 간의 인과관계에 대한 선행 연구들을 종합적으로 정리하여 가설적 모형을 구성하였다. 연구의 모집단은 전국의 656개 실업계 고등학교에 재직 중인 35.076명의 교사였다. 25개 실업계 고등학교에 재직 중인 760명의 교사를 대상으로 하여 조사가 이루어졌으며, 배포된 질문지 가운데 626매가 회수되었다(회수율: 82.4%). 수집된 자료는 Lisrel 8.50을 사용하여 공변량 구조분석을 실시하였으며, 모수 추정방법으로는 최대우도법이 사용되었다. 적합도 지수로는 x^(2), RMSEA, GFI, CFI, IFI, NNFI가 사용되었으며, 경로계수의 통계적 유의수준은 5% 였다. 이 연구를 통하여 얻어진 구체적인 연구 결과는 다음과 같다. 첫째, x^(2)는 446.84 (df=125, p<.001)로 모형이 부적절한 것으로 판정하였으나, RMSEA는 .075로서 수용가능한 수준이었다. 또한 GFI는 .90, CFI와 IFI는 .91로서 세 수치 모두 적합 수준인 .90이상이었다. 그리고 NNFI가 .88로서 권장 수용수준인 .90이상에는 다소 미치지 못하지만 보통 수준으로 나타났다. 둘째, 조직문화는 조직 효과성에 유의한 영향을 미치는 것으로 나타났으나, 교장 변혁적 리더십과 직무특성은 유의한 영향을 미치지 않는 것으로 나타났다. 셋째, 교사 임파워먼트는 조직 효과성에 유의한 정적 영향을 미치는 것으로 나타났다. 넷째, 교장 변혁적 리더십과 직무특성은 교사 임파워먼트에 유의한 영향을 미치는 것으로 나타났으나, 조직문화는 유의한 영향을 미치지 않는 것으로 나타났다. 다섯째, 독립변인(교장 변혁적 리더십, 직무특성, 조직문화)과 매개변인(교사 임파워먼트)은 조직 효과정의 전체 변량 중 80%를 설명하는 것으로 나타났다. 또한 조직 효과성을 유의하게 설명하는 변인은 조직문화, 교사 임파워먼트, 직무특성의 순으로 나타났으며, 교사 임파워먼트는 직무특성과 교장 변혁적 리더십의 조직 효과성에 대한 효과를 매개하는 것으로 나타났다. The purpose of this study was to establish the causal structural model among principal leadership, job characteristics, organizational culture and teacher empowerment associated with organizational effectiveness of vocational high schools. The data were gathered from 760 teachers in vocational high schools. The major findings of the study were as follows: ① The result of this analysis revealed a generally fit to the data: x^(2)=446.84(p<.05); x^(2)/df=125; RMSEA=.075; GFI=.90; CFI=.91. IFI=.91; NNFI.88. ② Organizational culture had positive effects on organizational effectiveness(β=.71, p<.01). But principal leadership and job characteristics had no significant effect on organizational effectiveness of vocational high schools. ③ Teacher empowerment in vocational high schools had positive effects on organizational effectiveness(β=.27, p<.01). ④ Principal leadership in vocational high schools(β=.15, p<.01) and job characteristics(β=.78, p<.01) had positive effects on teacher empowerment. But organizational culture had no significant effect on teacher empowerment. ⑤ A series of path analyses revealed that organizational culture(β=.71, p<.01), teacher empowerment(β=.27, p<.01) and job characteristics(β=.21, p<.01) had significant effects on organizational effectiveness of vocational high schools. Moreover, indirect effects of job characteristics on organizational effectiveness were mediated by teacher empowerment(β=.21, p<.01). It showed that teacher empowerment mediated the effects of job characteristics on organizational effectiveness.

광주광역시 전문계 고등학교 특성화 및 종합발전방안

나승일,정철영,김진모,안강현,한홍진,김기용,민상기,장현진 한국농업교육학회 2008 농업교육과 인적자원개발 Vol.40 No.1

이 연구의 목적은 광주광역시 전문계 고등학교의 특성화 및 종합발전방안을 수립하는데 있다. 이 연구는 ① 전문계 고등학교 관련 선행연구 분석,② 인력육성 및 특성화 방향을 설정하기 위하여 광주광역시,전라남도,우리나라의 산업여건 분석,③ 광주광역시 전문계 고등학교에 대해 Malcolm Baldrige 평가모형에 의한 진단평가와 SWOT 및 활용전략 분석, ④ 광주광역시 전문계 고등학교의 개편 요구 분석,⑤ 광주광역시 전문계 고등학교의 특성화 및 종합발전방안 설정 등의 과정을 통해 수행되었다. 이 연구의 결과는 다음과 같다. 첫째,비전은 광주광역시 전문계고 특성화와 발전 역량 구축을 통한 산업체 요구에 부합하는 우수 인력 양성이며,이를 위한 전략은 특성화 체제구축,학교교육 혁신,인적 자원 혁신,학교경영 혁신,인프라 구축으로 설정하는 것이 필요하다. 둘째, 특성화 체제 구축은 특성화 체제 개편,교육과정 중심 특성화,학과 재배치 통합형 고교 도입,특성화고 신설을 통해 추진할 수 있 는데 특히,교육과정 중심 특성화가 적극 도입되어야 한다. 셋째,학교교육 혁신은 교육과정 개편,교수 학습 개선,진로지도 개선,시설 및 기자재 개선을 통해 추진할 수 있다. 넷째,인적자원 혁신은 학교 관리자 역량 강화,교원 역량 강화,학생 역량 강화를 통해 추진할 수 있다. 다섯째,학교경영 혁신은 경영 리더십 제고,경영 성과관리 강화,학교 재정 혁신을 통해 추진할 수 있다. 여섯째,인프라 구축을 위해 지자체,대학,산업체,지역주민과 연계 강화를 통해 추진할 수 있다. 일곱째,13개 전문계 고둥학교의 여건 및 특성에 적합한 단위학교별 특성화 및 종합발전방안을 수립하였다. The purpose of this study was to suggest strategies to specialize and develop vocational high schools in Gwangju Metropolitan City. The study was orderly performed as follows: (1) reviewing literature about vocational high school, (2) analyzing the condition of industries, (3) diagnosing the vocational high school through Malcolm Baldrige model, (4) analyzing the SWOT and application strategies, (5) analyzing the needs of reform, and (6) establishing the strategies for the specialization and development of Vocational High Schools in Gwangju Metropolitan City. The major findings of this study were as the following: First, the vision was to bring up excellent human resources to corresponds industrial needs through specialization and development of vocational high schools in Gwangju Metropolitan City. Five strategies to achieve it were creating the specialization system, innovating the school education, human resources, and the school management, and building the infrastructure. Second, creating the specialization system can be performed through five tasks which were restructuring the specialization system, creating curriculum-based specialization, trading departments in inter-schools, introducing an integrated high school, and building a new specialized high school. Especially curriculum based specialization needs to be accepted. Third, innovating the school education can be performed through four tasks which were reorganizing the curriculum, improving the teaching and learning, improving the career guidance, and improving the facilities and equipments. Fourth, innovating human resources can be performed through three tasks which were enhancing each competencies of a school manager, a teacher, and a student. Fifth, innovating the school management can be performed through three tasks which were improving the management leadership, developing the performance management, and innovating the school finance. Sixth, building the infrastructure can be performed through four tasks which were enhancing the relationships with a local government, colleges, industries, and local residents. Seventh, individual strategies for the specialization and development of thirteen vocational high schools were also developed by corresponding to their conditions and characteristics.

Pulse Power를 이용한 혐기성 소화 효율 증대

최한나,전용우,정윤진,홍승모 대한상하수도학회 2003 상하수도학회지 Vol.17 No.3

Anaerobic digestion is commonly used in wastewater treatment plants to stabilize sludge produced in primary and secondary treatment, to produce renewable energy as methane, and to reduce the volume of solids for ultimate disposal. Previous studies on anaerobic digestibility of primary and secondary sludge present that secondary sludge showed poor anaerobic digestibility and less gas production. The objectives of this research were to study the effects of pulse power pretreatment on anaerobic digestibility of waste activated sludge. These objectives were achieved through operation of carefully-controlled laboratory digesters under various conditions. The conclusion made from this study are as follows: 1) To maximize the efficiency of pulse power pretreatment for waste activated sludge, the optimum operation conditions for coaxial reactor with 7 rings are decided as follows; a) optimum pulse repetition rate : 110㎐, b)feeding service : once-through mode, c) optimum hydraulic retention time : 1.0-1.5sec 2) Pretreated WAS by pulse power system showed increase of SCOD, ECP, and V.A by 13.6, 4.6, and 7.1 times. 3) From the results from operation of lab scaled anaerobic digester, pulse power sludge pretreatment increased GPR from 0.39㎥gas/㎏VS_add · day to 0.66㎥gas/㎏VS_add · day and methane content from 43.9% to 87.9%. Thus, increase of methane production rate was increased by 3.4times. 4) During the steady state operation of anaerobic digester, the removal efficiency of TCOD and VS were improved by 44.6% and 31.5% respectively after pulse power pretreatment of waste activated sludge.

Production of Bacterial Cellulose by Acetobacter sp. A9 in Shaking Cultures

Son,Hong Joo,Jeong,Se Na,Kim,Keun Ki,Kim,Han Soo,Kim,Yong Gyun 한국생명과학회 2001 한국생명과학회 학술발표회 Vol.31 No.-

Bacterial cellulose (BC) is essentially a high-value speciality chemical with specific applications and usage. Because of its high tensile strength and water holding capacity, BC has been used as a raw material for producing high fidelity acoustic speaker, high quality paper and diet and dessert foods. In this study, the optimum fermentation condition for the production of cellulose by a newly isolated Acetobacter sp. A9 was determined by shaken cultures. The strain was able to produce cellulose at 25-30℃ with a maximum at 30℃. Cellulose production occurred at pH 4.5-7.5 with a maximum at pH 6.5. The improved medium composition was 4%(w/v) glucose, 0.1%(w/v) yeast extract, 0.7%(w/v) polypeptone and 0.8%(w/v) Na₂HPO₄·12H₂O. Under this culture condition, cellulose of 3.8 g/l was produced after 7 d of cultivation, although this strain produced only 2.2 g/l in the standard medium. The addition of ethanol to the improved medium was enhanced cellulose production. In an improved medium containing 1.4% (v/v) ethanol, cellulose production was 15.2 g/l, which was about 4 times higher than that without ethanol. Addition of ethanol was found to eliminate the spontaneous mutation of Acetobacter sp. A9.

여성의 유방자가검진의 지식 정도

구한나,박인경,박하영,성초아,장다엘,홍은민 이화여자대학교 간호과학대학 2012 이화간호학회지 Vol.- No.46

Purpose: This study was to grasp women’s knowledge about Breast Self-examination. Methods: We collected data from 317 women who lives in certain city, Korea using structured questionnaire from 5th, August to 20th, September. The collected data was analyzed by SPSS 19.0. Results: The average score of women’ Breast Self-examination knowledge was 6.79±3.68 (of 17). There are three categories in knowledge about Breast Self-examination. Average score of category is 2.31 ± 0.71(of 4) for knowledge of breast cancer, 2.11 ± 0.57(of 5) for knowledge of breast cancer symptom, 2.37 ± 0.45(of 8) for knowledge of Breast Self-examination. Knowledge about Breast Self-examination according to general characteristics varied significantly for different age, marital status, education, and history of breast disease. Knowledge about Breast Self-examination according to characteristics related Breast examination was higher for women who received Breast Self-examination education, received Breast Self-examination education by lecture, performed Breast Self-examination, and who received Clinical Breast Examination Conclusion: People who are teenager and over sixties, their knowledge of Breast Self-examination was low. Therefore, effective Breast Self-examination education program should be provided for women who are teenager and over sixties to promote their Breast Self-examination practice regularly.

만성중이염의 골도청력변화

박선홍,노용훈,이도용,나한조,김용기,최봉남,도남용 朝鮮大學校 附設 醫學硏究所 1996 The Medical Journal of Chosun University Vol.21 No.1

We have usually experienced bone conduction impairment in chronic otitis media, but it is unclear that raised bone conduction threshold is due to the reflection of cochlear dam- age and / or Carhart effect ( an artificial elevation of bone conduction threshold due to conductive defect ) or both. The purpose of this study is to verify the influence of the artificial elevation of the bone conduction threshold in chronic otitis media and to estimate Carhart effect. A total of 336 cases of tympanoplasty with unilateral chronic otitis media without any other causes of sensorineural hearing loss was studied. The average threshold levels of the bone conduction in diseased ears ranged from 18.5dB at 4kHz to 12.1dB at 250Hz The longer duration of the disease, the larger perforation size, the more severe damage of the middle ear structure and the presence of the cholesteatoma made bone conduction threshold increased. The postoperative thresholds of bone conduction were Improved in 36 cases (40.4%) of the 89 cases that underwent operation with type I tympanoplasty technique without electrie drilling. The degree of the maximal improvement was 14.3dB at 2000Hz and the minimum was 8.8dB at 250Hz. but these result did differ from a statistically significant degree. The result suggest that the bone conduction threshold in chronic otitis media is elevated artificially by conductive defect and improved by successful reconstructive surgery.

후두 및 하인두 편평세포암종에서 E-cadherin의 면역조직화학적 발현

도남용,나한조,이도용,허준,최지윤,이홍영,임성철 조선대학교 2000 The Medical Journal of Chosun University Vol.25 No.2

Background and Objectives : The cell-cell adhesion molecule E-cadherin is necessary for the maintenance of the epithelial cellular structure. We were designed to confirm the significance of E-cadherin as a marker for differentiation and invasiveness of squamous cell carcinoma of the larynx and hypopharynx. Materials and Methods : Our study was investigated for the immunohistochemical expression of the epithelium-specific cell adhesion molecule E-cadherin in formalin fixed paraffin embedded tissue specimen of 32 cases of squamous cell carcinoma of larynx and hypopharynx. Results : The positive expression of E-cadherin was 56.3%(18 cases) in squamous cell carcinoma of the larynx and hypopharynx. Decreased E-cadherin expression was a stastistically significant correlation with a increased grade of lymph node stage and clinical stage. Reduced expression was seen in the large tumor size and poorly differentiated tumors, but these result was not statistically significant. Conclusion : The expression of E-cadherin may be related with progression of squamous cell carcinoma of the larynx and hypopharynx. But these correlation were not sufficient for the prognostic indicators in squamous cell carcinomas of the larynx and hypopharynx.

폐종양과 감별이 어려운 탄분섬유증 4예

김동호,나문준,박순창,홍한기,김진환 충남대학교 의과대학 지역사회의학연구소 1997 충남의대잡지 Vol.24 No.1

Pulmonary anthracofibrosis may appear as a dark-gray color pigmentation on bronchus or pulmonary parenchyme and can result in pulmonary inflammation or fibrosis or emphysema. Some of the pigmentation can be accumulated in lymph node through lymphatics and result in lymphadenopathy. The causes of anthracofibrosis are aspiration of coal dust, or aromatic hydrocarbons, or air population, or silica dust and can be developed along with smoking or tuberculosis or lung cancer. We report 4 cases of pulmonary anthracofibrosis because we think it is necessary to distinguish pulmoary anthracosis acompanied by atelectasis, lymph node enlargement, and invasion to adjacent organ from lung cancer.

Integrated genome sizing (IGS) approach for the parallelization of whole genome analysis

Sona, Peter,Hong, Jong Hui,Lee, Sunho,Kim, Byong Joon,Hong, Woon-Young,Jung, Jongcheol,Kim, Han-Na,Kim, Hyung-Lae,Christopher, David,Herviou, Laurent,Im, Young Hwan,Lee, Kwee-Yum,Kim, Tae Soon,Jung, J BioMed Central 2018 BMC bioinformatics Vol.19 No.1

<P><B>Background</B></P><P>The use of whole genome sequence has increased recently with rapid progression of next-generation sequencing (NGS) technologies. However, storing raw sequence reads to perform large-scale genome analysis pose hardware challenges. Despite advancement in genome analytic platforms, efficient approaches remain relevant especially as applied to the human genome. In this study, an Integrated Genome Sizing (IGS) approach is adopted to speed up multiple whole genome analysis in high-performance computing (HPC) environment. The approach splits a genome (GRCh37) into 630 chunks (fragments) wherein multiple chunks can simultaneously be parallelized for sequence analyses across cohorts.</P><P><B>Results</B></P><P>IGS was integrated on Maha-Fs (HPC) system, to provide the parallelization required to analyze 2504 whole genomes. Using a single reference pilot genome, NA12878, we compared the NGS process time between Maha-Fs (NFS SATA hard disk drive) and SGI-UV300 (solid state drive memory). It was observed that SGI-UV300 was faster, having 32.5 mins of process time, while that of the Maha-Fs was 55.2 mins.</P><P><B>Conclusions</B></P><P>The implementation of IGS can leverage the ability of HPC systems to analyze multiple genomes simultaneously. We believe this approach will accelerate research advancement in personalized genomic medicine. Our method is comparable to the fastest methods for sequence alignment.</P><P><B>Electronic supplementary material</B></P><P>The online version of this article (10.1186/s12859-018-2499-1) contains supplementary material, which is available to authorized users.</P>