• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.2-3
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• 2015

This paper probes into safety leadership in construction and its impacts on site safety performance. A safety leadership model for construction is proposed. It contains two impacting paths of safety leadership, namely safety management and safety culture. By action research, safety improvement is achieved through leadership fulfillment on construction sites.

• Biotechnology and Bioprocess Engineering:BBE
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• 제11권4호
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• pp.306-312
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• 2006

Two culture modes, continuous and semi-continuous, of the decolorization fungus, Geotrichum candidum Dec 1, were compared to obtain a high treatment efficiency of molasses decolorization and a large productivity of peroxidase (DyP) to simultaneously decolorize dyes and molasses. The continuous culture of G. candidum Dec 1 using a 5-I jar-fermentor showed high DyP activity at a low dilution ratio of $0.005h^{-1}$, and decolorization ratio of molasses of 80% was obtained concomitantly. Therefore, a semi-continuous culture was performed by repeated refill and draw. In this mode, approximately 1.5 liters of the culture broth was replaced per cycle when the decolorization ratio of molasses was near 80%. The molasses medium (1.0 liter per day) was treated and the peroxidase productiveity in the drawn culture broth was 26.6U/day, whereas the peroxidase productiveity was 17.9U/day in the continuous culture with a dilution rate of $0.005h^{-1}$. The semi-continuous treatment system was an efficient decolorization method for the strain, G. candidum Dec 1.

• KSBB Journal
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• 제24권1호
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• pp.70-74
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• 2009

본 연구에서는 음식물쓰레기를 당화시키기 위해 섬유소분해효소를 효율적으로 배양하고자 먼저 refill하는 멘델배지의 농도를 0.5%로, 새로운 배지의 주입시간을 12시간으로 결정하였다. Flask 레벨에서는 fill-and-draw 방법으로 12시간 단위로 연속배양한 결과, amylase 활성은 300시간까지 1.0 U/mL 내외로 유지되었으며, FPase 활성은 156시간까지 0.40 U/mL 이상으로 유지되었다. 이때의 효소생산성은 amylase 3.49 U/L. hr, FPase 1.02 U/L. hr 이었다. 10 L에서는 batch, fed-batch, fill-and-draw 방법으로 효소를 생산한 결과 batch에서 가장 높은 효소생산성을 나타내었으며, 그다음은 fed-batch 이었다. Batch에서의 효소생산성은 amylase 42.30 U/L. hr, FPase 5.60 U/L. hr, fed-batch에서는 각각 23.03, 2.76 U/L. hr 이었다. 그리하여 T. inhamatum KSJ1을 이용한 섬유소분해효소의 연속배앙에서 10 L 생물반응기에서 fed-batch 빙법이 가장 효율적이었다.

• 한국식생활문화학회지
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• 제20권2호
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• pp.144-151
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• 2005

This study examined food culture appearing in Giroyeon paintings in the late Chosun Dynasty (early $17^{th}{\sim}l9^{th}$ century), a period under political and economical difficulties in overcoming frustrations and looking for self-restoration methods after Imjinweran$(1592{\sim}1598)$ and Byungjahoran$(1636{\sim}1637)$. Paintings related to Giroyeon include Lee Gi-ryong's $(1600{\sim}?)$ painted in 1629 under the reign of King Injo $(1623{\sim}1649)$, painted jointly by Kim Jin-yeo et al. in 1720, the first year of King Gyeongjong $(1720{\sim}1724)$ and Kim Hong-do's painted in 1804 under the reign of King Sunjo $(1800{\sim}1834)$ in the early $19^{th}$ century. These paintings over three centuries of the late Chosun show changes in the character of Giroyeon, food culture and tableware culture, etc. According to these paintings, the character of Giroyeon was expanded from a feast held for high civil officials to a banquet comprehending general civil servants. These paintings show Hyangeumjueui, which means the decorum of respecting and sowing the aged men of virtue with alcohol beverage, table manner, seated culture represented by cushions and mats and individual-table culture. In addition, the expansion of demand for sunbaikja and chungwhabaikja and the diversification of vessels and dishes are demonstrated in Giroyeon paintings after Imjinweran in 1592. in this way, Giroyeon paintings show the historical characteristics of the late Chosun Dynasty, such as the collapse of Yangban-centered political system, the disintegration of the medieval system due to the emergence of the Silhak and the diversification of food culture.

• Biotechnology and Bioprocess Engineering:BBE
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• 제11권1호
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• pp.26-31
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• 2006

The saccharogenic liquid (SFW) obtained by the enzymatic saccharification of food wastes was used as a medium for production of bacterial cellulose (BC). The enzymatic saccharification of food wastes was carried out by the cultivation supernatant of Trichoderma harziaum FJ1 culture. Acetobacter xylinum KJ1 was employed for the BC production culture. The physical properties, such as polymerization, crystallinity, Young's modulus, and tensile strength, of BCs produced by three culture methods: the static cultures using HS (Hestrin-Schramm) as a reference medium (A) or the SFW medium (B), the shaking culture (C) or the air circulation culture (D) using the SFW medium, were investigated. The degrees of polymerization of BCs produced under the different culture conditions (A-D) showed 11000, 9500, 8500, and 9200, respectively. Young's modulus was 4.15, 5.0, 4.0, and 4.6 GPa, respectively. Tensile strength was 124, 200, 80, and 184 MPa, respectively. All of the BC had a form of cellulose I representing pure cellulose. In the case of the shaking culture, the degree of crystallinity was 51.2%, the lowest degree. Under the other culturing conditions, the trend should remain in the range of 89.7-84%. Overall, the physical properties of BC produced from SFW were similar to those of BC from HS medium, a commercial complex medium, and BC production by the air circulation culture mode brought more favorable results in terms of the physical properties and its ease of scale-up. Therefore, it is expected that a new BC production method, like air circulation culture using SFW, would contribute greatly to BC-related manufacturing.

• 공학교육연구
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• 제14권5호
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• pp.67-74
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• 2011

The object of this study is to examine the process of the birth and transformation of civil engineering education as well as of modern civil engineers, called 'State noblesse', in the state engineer groups of France. For this, we will look into the background of founding the civil engineer corps and the civil engineering school, the transformation process of the civil engineering school into the applied school of Ecole Polytechnique, the activities of civil engineers in the industrialization process, and finally the organization and identity of the civil engineer group.

• Journal of Microbiology and Biotechnology
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• 제25권11호
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• pp.1928-1935
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• 2015

Microbial growth kinetics is often used to optimize environmental processes owing to its relation to the breakdown of substrate (contaminants). However, the quantification of bacterial populations in the environment is difficult owing to the challenges of monitoring a specific bacterial population within a diverse microbial community. Conventional methods are unable to detect and quantify the growth of individual strains separately in the mixed culture reactor. This work describes a novel quantitative PCR (qPCR)-based genomic approach to quantify each species in mixed culture and interpret its growth kinetics in the mixed system. Batch experiments were performed for both single and dual cultures of Pseudomonas putida and Escherichia coli K12 to obtain Monod kinetic parameters (μ_max and K_s). The growth curves and kinetics obtained by conventional methods (i.e., dry weight measurement and absorbance reading) were compared with that obtained by qPCR assay. We anticipate that the adoption of this qPCR-based genomic assay can contribute significantly to traditional microbial kinetics, modeling practice, and the operation of bioreactors, where handling of complex mixed cultures is required.

• 한국항해항만학회지
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• 제33권2호
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• pp.161-166
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• 2009

Lactobacillus sp., Acetobacter sp. and yeast were the most dominant organisms in the EM stock culture and subculture product. Lactic acid bacteria and yeast were able to grow in the fermentation process utilizing seawater. EM treatment of higher concentrations using EM stock culture and EM clay balls (1% or 4%) contributed to an early removal of malodor and an increase of DO in the polluted sediments, indicating an odor-removing activity of EM. The EM treatment of higher concentrations (1% or 4%) somewhat appeared to modify the microbial communities within the sediments, which was confirmed by existence of a few unique fragments from the stock culture based on PCR-DGGE. It still remains to be elucidated that EM cultures were directly involved in the malodor removal and potential sediment bioremediation.

• 안보군사학연구
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• 통권4호
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• pp.119-156
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• 2006

Now it is not useful the theory about civil-military relationship that have been analysed for power games between military and civilians Korean society is going on governance society managed by cooperating network of government, civilian society and business market These social change require for new context about civil-Military relationship. Military leadership must contribute desirable civil-military relationship This study will suggest the direction about military leadership for desirable civil-military relationship. Now political issues about military intervention to the government are almost settled, but the worry about complications between military and civilians exist in the part of low issues like policy-making. Another important issues is military leadership about the style of social-being. In recent years, social change is very complex and speedy like global networking and diversity, leadership environment also, changed like leadership paradigm shift. Military leadership must be examined from the principle to the context of social integration At the present age, individual soldier is citizen in uniformed. Also military leadership must to seek the principle in the citizen mind like citizenship. Another charactristics of present day military is influence of high technogy. For the high-tech war military need the transition about science and technology from the whole society. In the context of above the development of military leadership are suggested as follows. First, the development of military control leadership must besought to the context of cooperation between government and military. Government must provide the system to strengthen military professionals in the process of policy-making about national security Second, military leadership must embody the important social values through the advanced military making, Third, military leadership must provide the adaptability to the society through the military education of their soldiers Forth, military leadership must be contributed to the social integration and to the growing up individual soldiers like their socialization and their achievement. Five, an important subject of military leadership is the creation of desirable military culture through the harmony of social culture and military culture.

• 복식문화연구
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• 제6권1호
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• pp.35-45
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• 1998

Confucianism, the dominating thought in the Choson Dynasty, considered the congruence of scholar and bureaucrat as principle of royal politics, so it was the important affairs to educate and select scholars who excelled in Confucian science and its historical view. The process to educate and select the scholars in accordance with the spirit of Confucianism was called the civil service examination. In this study, we examined the dress and its ornaments of the Confucian students nd that of the successful candidate related to the system of the civil service examination, and focused on the literatures and figures. The Choson Dynasty looked upon the education as important and Confucian scholars and the successful candidate had the superior position in that society. The seems to have been the demarcation between the dress and its ornaments worn by the candidate and the successful candidate. According to the inquiry of the literatures and figures, the candidate is thought to have worn yuguhn(儒巾) or bokkuhn(幅巾) with chongsam(靑衫), nansam( 衫), jikryung(直領) and the successful candidate is thought to have worn bokduh( 頭) with easahwa(御史花), aengsam(鶯衫), danryung(團領) in the Choson Dynasty.