• Microbiology and Biotechnology Letters
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• v.24 no.1
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• pp.67-71
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• 1996

The plasmid pK8 was constructed to verify the existence of an adenylate domain in peptide synthetase by using pGC12. 1.2 kb fragment, coding tyrocidine synthetase 1 (123 kDa) was deleted, and 79.6 kDa one was expressed in Escherichia coli XL1-blue. The truncated multienzyme activated phenylalanine and substrate analogues with comparable kinetics as the over expressed synthetase. ATP-[$^{32}P$]PPi exchange reaction was measured for the enzyme assay.

• Journal of Nutrition and Health
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• v.47 no.6
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• pp.484-488
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• 2014

Purpose: This study investigated the question of whether the addition of natural ingredients (pear fermented solution, celery powder, vitamin C) in curing agents may influence antioxidant activities and nutritional characteristics of smoked duck. Methods: Smoked duck samples with general or natural curing agent containing three additive ingredients were examined to determine total polyphenol contents, antioxidant activities, pH, TBARS, and food additives residue (nitrite ion, antioxidant, sodium glutamate). Results: Smoked duck with natural curing agent showed a higher level of total polyphenol content and antioxidant activities than smoked duck using general curing agent (p < 0.05). The pH and TBARS of smoked duck were significantly decreased by the addition of natural curing ingredients compared to those of smoked duck using general curing agent (p < 0.05). The residues of food additives were not detected in smoked duck using natural curing agent. Conclusion: Findings suggest that the addition of pear fermented solution, celery powder, and vitamin C in natural duck curing agent may improve the antioxidant activities and nutritional characteristics of smoked duck and provides health benefits.

• Journal of Korean Academy of Nursing Administration
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• v.19 no.2
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• pp.227-238
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• 2013

Purpose: The purpose of this study was to explore the lived experiences of new graduate nurses in personal life and in clinical setting during their first year. Methods: Eleven new graduate nurses were interviewed and the data were analyzed using the Giorgi's phenomenological method. Results: The main results of this research were negative experiences such as poor nursing skills, inability to enjoy personal life, physical exhaustion and health problems, and uncertainty of nursing values. On the other hand, there were some positive aspects on their minds: adjustmental/developmental needs, sense of responsibility, receptive capability, and proficiency with their work. They gradually found themselves being endured and changing to adapt. Conclusion: Transition from students to staff nurses is a very stressful experience for new graduate nurses. It may negatively affect their personal lives as well. However they tried to keep themselves positive to overcome their difficulties. It is necessary for them to be given time, a systematic program, and a supportive environment to adapt.

• Journal of Korean Library and Information Science Society
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• v.35 no.3
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• pp.41-63
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• 2004

This Study analyzes the problems of the private education of reading appearing in our society recently. Moreover, it searches for what the social side effects caused by the private education of reading is, and for what the social scheme to solve this problem is.

• Journal of Korean Library and Information Science Society
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• v.41 no.4
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• pp.73-98
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• 2010

This study discussed the roles of librarians in readers' advisory services and the education for readers' advisory services in LIS programs. For this, literatures were reviewed and readers' advisory courses provided by LIS programs of North America were investigated. And then the characteristics and contents of readers' advisory courses were analyzed. Based on the analysis, I suggested the education for readers' advisory services in LIS programs of Korea.

• Proceedings of the KIPE Conference
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• 1998.07a
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• pp.366-370
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• 1998

Indirect vector control for induction motors requires the use of observers for estimation or observation of rotor flux magnitude and position. In this paper, authors discribe the induction motor vector control and introduce a nonlinear observer, named ELO(extended Luenberger Observer), without simulation results as a preliminary work for trial application. Normally, design of nonlinear observer need coordinate transfromation and linearization through solving the partial different equation. However, ELO requires minimal solution of nonlinear partial differential equation. Simulation was performed by under the enviroment of Matlab and Simulink without the proposed observer because we are still working. Simulation was performed with conventional flux observer, a dc-ac inverter by SVPWM technique, a vector controller armed with multiple PI controllers

• Proceedings of the KIPE Conference
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• 2006.06a
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• pp.552-554
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• 2006

BIPV(Building Integrated PV) system can expect dual effects that reduce expenses for establishment of PV system by adding new function as outer covering material of building expect producing the electricity. But, there are many generation differences according to the exterior environmental facts(solar cell array, design and installation condition of interactive inverter system) Therefore, it is difficult to optimum design. Consequently in advance design system, we experiment 3kW BIPV(Building Integrated PV) generation. We concrete PV system efficient application of variable. BIPV system that is proposed in this paper, was established in Solar Energy research center of Chosun University, composed with system. This research is a basic study for application of building integrated photovoltaic system for building

• Proceedings of the KIPE Conference
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• 2002.07a
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• pp.209-212
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• 2002

LIM have mainly different point considering rotary induction motor, that is end effect. In this paper described that, end effect, adding to the rotary induction motor, They can be designed because of affects magnetizing inductance and series resistance in the d-axis circuit. After LIM modeling, using SVPWM, apply to vector control this model. We can verify feasibility of field onented control technology can control speed by simulation.

• Proceedings of the KIPE Conference
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• 2006.06a
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• pp.558-560
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• 2006

Solar cell converts sunlight into the electricity that one of the most versatile forms of energy. It has been developed and applied on residental electric power system by urbanized countries as a alternative energy source to overcome energy problem after oil shock. This paper summarizes the results of these efforts by offering a snapshot of the configuration of photovoltaic in residential applications. The status of PV system components and inter-connection and safety equipment will be summarized. Hence this paper discusses only points that might be useful for application.

• Proceedings of the KIPE Conference
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• 2006.06a
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• pp.564-566
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• 2006

This paper presents experimental operation with utility interactive 50kW photovoltaic generation system. And that describe configuration of utility interactive photovoltaic system which power supply for dormitory. The status of photovoltaic generation system components and interconnection and safety equipment will be summarized. This paper discusses property operation state which system endure division of power for dormitory.