• Journal of Korean Society on Water Environment
• /
• v.22 no.2
• /
• pp.193-202
• /
• 2006

About 99% of microorganisms in the environment are unculturable. However, advances in molecular biology techniques allow for the analysis of living microorganisms in the environment without any cultivation. With the advent of new technologies and the optimization of previous methods, various approaches to studying the analysis of living microorganisms in the environment are expanding the field of microbiology and molecular biology. In particular, real-time PCR provides methods for detecting and quantifying microorganisms in the environment. Through the use of the methods, researchers can study the influence of environmental factors such as nutrients, oxygen status, pH, pollutants, agro-chemicals, moisture and temperature on the performances of environmental processes and some of the mechanisms involved in the responses of cells to their environment. This review will also address information gaps in the analysis of the microorganisms using real-time PCR in the environmental process and possible future research to develop an understanding of microbial activities in the environment.

• Proceedings of the Korean Society of Plant Biotechnology Conference
• /
• 2004.10a
• /
• pp.29-34
• /
• 2004

Reduction in stratospheric ozone layer increases the amount of ultraviolet-B radiation (UVB: 280-320 nm) that reaches the earth ’ s surface. UVB radiationcan damage plants, resulting in decrease in growth and productivity. UVB-augmentation studies have indicated that the sensitivity to UVB radiation in plants varies among the species and cultivars. However. there are no definitive answers for the mechanisms of UVB-resistance in higher plants and for bioengineering design and development of UVB-tolerant plants. We have been studying physiological and biochemical aspects of the effects of UVB radiation on growth and yield of rice COryza sativa LJ. aiming to clarify the mechanism of resistance to UVB radiationin rice. At this meeting. weintroduce our research as followed: (1) supplementary UVB radiation has inhibitory effects on the growth. yield and grain development of rice; (2) UVB sensitivity of rice varies widely among cultivars; (3) among Japanese rice cultivars. Sasanishiki. a leading variety in northeast Japan. is more resistant to UVB. while Norin 1. a progenitor of Sasanishiki. is less resistant; (4)UV-sensitive Norin 1 cultivar is deficient in photorepair of UVB-induced cyclobutane pyrimidine dimer (CPD). and this deficiency results from one amino acid residue alteration of CPD photolyase. These results suggest that spontaneously occurring mutation in CPD photolyase gene could lead to difference in UVB sensitivity in rice. and that CPD photolyase might be a useful target for improving UVB-sensitivity in rice by selective breeding or bioengineering of UVB-tolerant rice.

• 한국균학회소식:학술대회논문집
• /
• 2015.11a
• /
• pp.39-39
• /
• 2015

Korean traditional Nuruk has been developed with various materials and shapes according to geographical environments and climates of their origins. Nuruk is also known as kokja in Korea, reflecting the understanding that microorganisms such as wild fungi, yeasts, and lactobacillus bacteria are naturally inoculated and reproduced. The objective of this study is to identify the characteristics of traditional Nuruk through recreating traditional production methods detailed in ancient Korean documents. In the present study, a total of 58 different kinds of Korean traditional Nuruk were prepared, including 46 kinds of recreated products. Each Nuruk sample was evaluated for its enzymatic activities, including glucoamylase, protease, and glucanase. Their suitability for alcoholic beverage production were compared to each other. To isolate valuable microorganisms from Nuruk samples, alcoholic beverages produced using each sample were subjected to sensory evaluation to determine their taste. In addition, metabolite changes in traditional alcoholic beverages fermented with different kinds of Nuruk were analyzed through mass-based metabolomics approach. This study presents, for the first time, the traditional production methods written in ancient Korean documents using workable production methods supported by modern technologies. In addition, this study analyzed the characteristics of reproduced Nuruk. It could be utilized as a basis for studying traditional Korean traditional alcoholic beverages and their valuable microorganisms.

• Nuclear Engineering and Technology
• /
• v.35 no.1
• /
• pp.80-90
• /
• 2003

According to related studies, it was revealed that the procedural deviation plays a significant role in initiating accidents or incidents. This means that, to maximize safety, it is indispensable to be able to answer the question of “why the operators deviate from procedures\ulcorner” In this study, the SC (step complexity) measure is introduced to investigate its applicability for studying the procedural deviation, since it was shown that the change of the operators' performance is strongly correlated with the change of SC scores. This means that the SC measure could play an important role for researches related to the procedural deviation, since it is strongly believed that complicated procedures would affect both the operator' performance and the possibility of the procedural deviation. Thus, to ensure this expectation, the meaning of the SC measure is investigated through brief explanations including the necessity, theoretical basis and verification activities of the SC measure. As a result, it is confirmed that the SC measure can be used to explain the change of the operators' performance due to the task complexity implied by procedures. In addition, it seems that the SC measure nay be useful for various purposes, particularly for scrutinizing the relationship between the procedural deviation and complicated procedures.

• Nuclear Engineering and Technology
• /
• v.46 no.5
• /
• pp.595-604
• /
• 2014

SILER (Seismic-Initiated event risk mitigation in LEad-cooled Reactors) is a Collaborative Project, partially funded by the European Commission in the $7^{th}$ Framework Programme, aimed at studying the risk associated to seismic-initiated events in Generation IV Heavy Liquid Metal reactors, and developing adequate protection measures. The project started in October 2011, and will run for a duration of three years. The attention of SILER is focused on the evaluation of the effects of earthquakes, with particular regards to beyond-design seismic events, and to the identification of mitigation strategies, acting both on structures and components design. Special efforts are devoted to the development of seismic isolation devices and related interface components. Two reference designs, at the state of development available at the beginning of the project and coming from the $6^{th}$ Framework Programme, have been considered: ELSY (European Lead Fast Reactor) for the Lead Fast Reactors (LFR), and MYRRHA (Multi-purpose hYbrid Research Reactor for High-tech Applications) for the Accelerator-Driven Systems (ADS). This paper describes the main activities and results obtained so far, paying particular attention to the development of seismic isolators, and the interface components which must be installed between the isolated reactor building and the non-isolated parts of the plant, such as the pipe expansion joints and the joint-cover of the seismic gap.

• Journal of Agricultural Extension & Community Development
• /
• v.17 no.2
• /
• pp.233-259
• /
• 2010

The purpose of this study is to find out about how are physical health, economical states and social relationships of women elderly living alone in an island. The measurement variables are subjective health status, satisfaction of life and a feeling of depression through Activities of Daily Life, social supports, social network and social relationship. First, the ADLs of the aged women living alone in the island are that can't do themselves 23.4%, and need to other's help on their walking 23.4%, bathing 6.5%, and going out 10.3%. Second, them answered that is very shortage or shortage with living expenses 46.8%. Average income in a month is under 200thousands won are account for 32% in a rural and 32.4% in an urban but the aged women living alone in an island are account for 35.1%. comparing with that they are living under the absolute poor with a small income less than 300thousands won. Third, social relationships of the aged women living alone in the island are living with an offspring in a same region 50.6%, a neighboring village 11.7%, and living with a relation in same region. At this study differs from other studies are about studying to be compared aged people between rural and urban area. This study is researched comprehensively about more fragility people.

• Korean journal of applied entomology
• /
• v.30 no.1
• /
• pp.94-99
• /
• 1991

The daily rhythm of sex pheromone production and release by females of the black pine base scale, Matsucoccus thunbergianae Miller and Park, was demonstrated by studying the amounts of pheromone possessed and released by females, periodically after emergence. Cycles of both pheromone production and release had daily peaks between 8 a.m. and 2 p.m., and has marked decreases after 4 p.m. It appeared that the amounts of pheromone gradually decreased three days after the emergence. Significance in synchronization of the daily rhythm of female pheromone release and activities of males and females with reference to reproductive success in this species is discussed.

• English Language & Literature Teaching
• /
• v.8 no.2
• /
• pp.151-176
• /
• 2003

Motivation and learning strategies, some of the important factors affecting language learning, have mostly been studied with reference to their relationship in terms of proficiency. This study investigated motivation and learning strategies and their relationship in order to find the inward predisposition of learners. Data was collected from 200 university students in Taejon and Chungnam province, Korea language learning strategies were measured by the Strategy Inventory for Language Learning(SILL), and motivation by the Attitude / Motivation Test Battery(AMTB), with adaptations for Koreans. The detailed analysis of the data Indicated that Korean university students were more motivated to learn English for a practical goal than a formal one. They had a strong willingness to learn but showed 'the tendency of the new generation' of choosing the easiest and most convenient ways in studying English in terms of motivational intensity and strategy use. Findings imply that there have to be some changes and improvements in the deep-rooted classroom teaching methods. A systematic device is needed to induce students to be autonomous learners, providing them with a variety of activities suitable for their purposes and levels, as in opportunities of contacting native speakers, multi-media language labs, the Internet etc.

• Proceedings of the Korean Society of Computer Information Conference
• /
• 2012.07a
• /
• pp.213-215
• /
• 2012

입시위주의 주입식교육에 적응되어있는 대학생들의 기초학력 저하는 대학의 정상적인 교육과정 운영에 심각한 문제를 초래하고 있다. 또한 기초학습 능력의 부족은 학교생활 부적응을 초래하기 때문에 생각보다 심각한 상황이 아닐 수 없다. 자기 스스로 학습 수준을 파악하고 계획적인 학습 습관을 정립 할 수 있는 학생주도형 학습공동체 활동은 교과에 대한 이해와 관심을 끌어올리고 동시에 학습의욕을 향상 시킬 수 있다. 많은 대학이 학생주도형 학습공동체 활동으로 튜터링을 운영하고 있으나 운영방법상의 문제점으로 많은 효과를 보지 못하고 있는 실정이다. 본 연구에서는 학생주도형 학습공동체 활동 시스템의 문제점의 하나인 활동보고서의 서면 제출을 안드로이드 기반으로 하여 간단하게 제출 할 수 있는 시스템을 연구하였다. 안드로이드 기반 학생주도형 학습공동체 활동 관리 시스템은 튜터의 제출보고서 작성 부담을 줄여주고, 운영기관에서는 효율적으로 관리 할 수 있는 시스템이다.

• Journal of the Korean Home Economics Association
• /
• v.36 no.3
• /
• pp.207-224
• /
• 1998

This study is approach to the Home-Based Work. More specifically, to examine about the families who try to combined home life and income-generation work under the same roof. Families were looking at Home-Based Work as one solution to the work-family crunch. Many research papers have suggested that Home-Based Work provides an effective way to balance the demands of paid employment and family responsibilities. Therefore, this proposed research reviewed the Home-Based Work as they contributed to individual and family satisfactions. The Prupose of this paper is to address issues related to Home-Based Work from the perspective of theory and application in family resource management, also to suggest a conceptual model for family work activities is advanced. This paper is examined concepts related to Home-Based Work employment that could be used to frame and describe the empirical study are specified. This paper was informed by analyses of data from project NE-167. "At-Home Income Generation: Impact on Management, Productivity, and Stability in Rural/Urban Families". The results from this paper will be helpful in enhancing the stability and satisfaction of families who worked in Home-Based Work.ased Work.