• Title/Summary/Keyword: Foreign Plant

Search Result 484, Processing Time 0.024 seconds

Biotransformation of Exogenous Monoterpenoids by Plant Cell Culture

  • Shin, Seung-Won
    • Korean Journal of Pharmacognosy
    • /
    • v.26 no.3
    • /
    • pp.227-238
    • /
    • 1995
  • Recent reports on biotransformation of monoterpene alchols, aldehydes, acetates and epoxides are summerized. The studies have focused on stereospecific reaction of the functional groups of exogenous foreign substrates by foreign plant cells and micro-organisms. An another important aspect of research is the development of the immobilization technique for cells or related enzymes.

  • PDF

An Analysis of Operating Experience Reports on the Foreign JIT (해외 JIT에 수록된 운전경험 분석)

  • Lee, Sang-Hoon;Kim, Jae-Hun;Song, Tae-Young
    • Transactions of the Korean Society of Pressure Vessels and Piping
    • /
    • v.10 no.1
    • /
    • pp.70-74
    • /
    • 2014
  • An Operating Experience Report(OER) has written about events and accidents happened at a Nuclear Power Plant(NPP). The purpose of publishing the OER is to prevent the similar event or accident repeatedly by spreading the experience of a single plant to other plants personnel. In this paper, it is analyses that the foreign NPPs' OERs on JIT published by the International Nuclear Agency(WANO, INPO, COG, BE). The analysis introduced in this paper is performed along with the various factors such as type of work, root-cause, and equipment. The root-cause analysis about the OERs shows that the Human-error is the major factor in foreign NPPs, but on the other hand equipment problem is the main part of the Domestic NPPs. The ratio of the foreign NPP's OERs on JIT according to the type of work was applied to KHNP-JIT developed nowadays for the first time in KOREA.

A Management Approach of the Construction Accidents Based on Assessing the Job Stress of Korean and Foreign Construction Laborers (내외국인 건설 근로자의 직무 스트레스 평가를 통한 건설재해 관리 방안)

  • Jeong, Kyeong Hwan;Kim, Gwang-Hee;Shin, Yoonseok
    • Journal of the Korean Society of Safety
    • /
    • v.29 no.5
    • /
    • pp.88-96
    • /
    • 2014
  • Each year, it seems inevitable that major accidents will occur on construction sites. Industrial accidents, sometimes involving foreign laborers, have been constantly increasing. Construction laborers have higher hazard rates and higher work intensity than other industries, which means that they experience more job stress, as a result of the subcontracting structure. Therefore, this study performed an influence factor analysis on job stress and its relevance to industrial accidents involving Korean and foreign construction laborers, and proposed its effectiveness with the job stress and construction accident management measures based on the results of those. A questionnaire to measure job stress was performed targeting Korean and foreign laborers, and the results were analyzed. The results of this study can be utilized as important reference materials in efforts to reduce the job stress of foreign laborers on construction sites, and can be expected to contribute to preventing construction accidents related to job stress in the future.

A Quantitative Performance Analysis of Foreign Internship System for Plant Industry (플랜트 해외인턴 지원사업의 정량적 성과분석)

  • Kim, Dae-Ho
    • Asia-Pacific Journal of Business Venturing and Entrepreneurship
    • /
    • v.6 no.2
    • /
    • pp.1-12
    • /
    • 2011
  • Korean government have supported the foreign internship system for plant industry to bring up the professional personnel for this industry. The Korea Plant Industry Association(KOPIA) has sent 400 interns each year to the foreign plant construction field since 2009. The purpose of this study is to analyze this foreign internship system in quantitative aspects and to suggest the several improvements on this system. In 2010, 402 interns, which exeeds the primary object 400, were sent to the foreign field and this study analyzed the 2010 results by monthly, by major of participating interns, and by the business type of participating company. Finally, this study suggests several improvements for this internship system as follows : 1) the enlargement of the internship system into employement, 2) the need for the public relations(PR) of this systems, 3) the establishment of cooperating network among participating universities, and 4) the enforcement of network among participating company, KOPIA, and paricipating interns.

  • PDF

Control measures to African swine fever outbreak: active response in South Korea, preparation for the future, and cooperation

  • Kim, Yong-Joo;Park, Bongkyun;Kang, Hae-Eun
    • Journal of Veterinary Science
    • /
    • v.22 no.1
    • /
    • pp.13.1-13.14
    • /
    • 2021
  • African swine fever (ASF) is one of the most complex infectious swine diseases and the greatest concern to the pig industry owing to its high mortality and no effective vaccines available to prevent the disease. Since the first outbreak of ASF in pig farms, ASF has been identified in 14 pig farms in four cities/counties in South Korea. The outbreak was resolved in a short period because of the immediate control measures and cooperative efforts. This paper reviews the ASF outbreak and the experience of successfully stopping ASF in pig farms in South Korea through active responses to prevent the spread of ASF. In addition, suitable changes to build a sustainable pig production system and collaborative efforts to overcome the dangerous animal disease, such as ASF, are discussed.

A low-pressure gene gun for genetic transformation of maize (Zea mays L.)

  • Kao, Chien-Yuan;Huang, Shin-Hui;Lin, Chiu-Mei
    • Plant Biotechnology Reports
    • /
    • v.2 no.4
    • /
    • pp.267-270
    • /
    • 2008
  • We have successfully used the low-pressure BioWare gene gun, developed for gene transfer in animal cells, for plant tissues. The BioWare device is easy to manipulate. Just 50 psi helium pressure was sufficient to transfer foreign genes into the aleurone layer and embryo of maize without causing tissue damage in the impact area. As shown by expression signals from invasive histochemical ${\beta}-glucuronidase$ (GUS) activity, the foreign reporter gene expressed well in bombarded tissues. This successful GUS-transient expression extends the application of this low-pressure gene gun from animal cells to plant tissues.

Agronomic Characteristics and Path-coefficients of Safflower (Carthamus tinctorius L.) Collections (잇꽃 수집종의 주요특성과 경로계수 분석)

  • Park, Gyu-Hwan;Jung, Do-Chul;Kim, Jae-Cheol;Jeon, Chi-Hyeong;Kim, Kyung-Min
    • Korean Journal of Medicinal Crop Science
    • /
    • v.12 no.1
    • /
    • pp.17-23
    • /
    • 2004
  • This study was carried out to obtain the basic information on mating parents and selection for high yielding safflower breeding. Thirty nine world safflower lines, which had collected from 13 countries of origjn, were evaluated for major agronomic characters, correlation and path-coefficients. The results obtained were summarized as follows. Days to flowers ranged from 83 days to 100 days. Days to flower of most foreign lines were later than that of domestic lines. Plant height ranged from 75 cm to 162 cm. The plant height and stem diameter of most foreign lines were higher than those of domestic lines. The leaf number and size of domestic lines were much more than those of foreign lines. The total branch numbers of foreign lines were more than domestic lines. Particularly, the number of third branch ranged from 0 to 25 and there were none in domestic lines. The number of corolla of foreign lines was much more than that of domestic lines. The yield of foreign lines collected from Central Asia and United States of America were more than any others. Significantly positive correlations were observed between yield and days to flower, stem diameter, the number of branch and the number of corolla. In the analysis of path-coefficient, the highest direct effects on yield was the number of corolla followed by the number of total branch, whereas those of the number of second branch and stem diameter were negative.

Effects of Plant Mixtures and Tackifibers on the Slope Vegetation (식물배합과 녹화용 접착제에 따른 비탈면녹화 특성)

  • Kim, Jae-Hwan;Yoon, Jung-Seo;Shim, Sang-Ryul
    • Journal of the Korean Society of Environmental Restoration Technology
    • /
    • v.9 no.6
    • /
    • pp.123-132
    • /
    • 2006
  • This research was studied to inverstigate the effect of plant mixtures and tackifibers on the vegetation of slope sites. 5 type plant mixtures(tree type, forest type, native herbaceous plant type, foreign herbaceous plant type, and cool-season turfgrass type) and 3 different tackifibers (Guar tackifibers, Polyarchrylamide tackifibers and Cellulose methyl starch) were treated with 3 replications on the experimented slope. The germination and coverage rate were high on native and foreign herbaceous plants and low on cool-season turfgrass, forest and tree types. We could notice that herbaceous plant types were effective on the vegetation of slope in the short term. Because tree or forest type vegetations similar to natural plant habitat, however, were preferable on slope vegetation in the long term, tree species of high germination rate should be selected in this experiment for tree or forest type slope vegetations. Tackifiber treatments increased the germination rate during the early treatment stage. However, the effect of tackifiber treatment on germination rate was decreased on the elapse of time. Guar tackifiber treatment was most effective on the vegetation of slope. As far as soil erosion control was concerned, all tackifiber treatments were effective compared to control.

Numerical Study on the Impact of Power Plants on Primary PM10 Concentrations in South Korea

  • Park, Il-Soo;Song, Chang-Keun;Park, Moon-Soo;Kim, Byung-Gon;Jang, Yu-Woon;Ha, Sang-Sub;Jang, Su-Hwan;Chung, Kyung-Won;Lee, Hyo-Jung;Lee, Uh-Jeong;Kim, Sang-Kyun;Kim, Cheol-Hee
    • Asian Journal of Atmospheric Environment
    • /
    • v.12 no.3
    • /
    • pp.255-273
    • /
    • 2018
  • To develop effective emission abatement strategies for eighteen coal-fired power plants located throughout Korea, power plant emission data and TAPM (The Air Pollution Model) were used to quantify the impact of emission reductions on primary $PM_{10}$ concentrations. TAPM was validated for two separate time periods: a high $PM_{10}$ concentration period from April 7 to 12, 2016, and a low $PM_{10}$ concentration period from June 1 to June 6 2016. The validated model was then used to analyze the impacts of five applicable power plant shut-down scenarios. The results showed that shut-down of four power plants located within the Seoul metropolitan area (SMA) would result in up to 18.9% reduction in maximum $PM_{10}$ concentrations, depending on synoptic conditions. A scenario for the shutdown of a single low stack height with highest-emission power plant located nearest to Seoul showed a small impact on averaged $PM_{10}$ concentrations (~1%) and 4.4% ($0.54{\mu}g/m^3$) decrease in maximum concentration. The scenario for four shutdowns for power plants aged more than 30 years within SMA also showed a highest improvement of 6.4% ($0.26{\mu}g/m^3$ in April) in averaged $PM_{10}$ concentrations, and of 18.9% ($2.33{\mu}g/m^3$ in June) in maximum concentration, showing almost linear relationship in and around SMA. Reducing gaseous air pollutant emissions was also found to be significant in controlling high $PM_{10}$ concentrations, indicating the effectiveness of coreduction of power plant emissions together with diesel vehicle emissions in the SMA. In addition, this study is implying that secondary production process generating $PM_{10}$ pollution may be a significant process throughout most regions in Korea, and therefore concurrent abatement of both gas and particle emissions will result in more pronounced improvements in air quality over the urban cities in South Korea.