• Korean Journal of Weed Science
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• v.30 no.4
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• pp.340-360
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• 2010

The depletion of fossil fuels, ecological problems associated with $CO_2$ emissions climate change, growing world population, and future energy supplies are forcing the development of alternative resources for energy (heat and electricity), transport fuels and chemicals: the replacement of fossil resources with $CO_2$ neutral biomass. Several options exist to cover energy supplies of the future, including solar, wind, and water power; however, chemical carbon source can get from biomass only. When used in combination with environmental friend production and processing technology, the use of biomass can be seen as a sustainable alternative to conventional chemical feedstocks. The biorefinery concept is analogous to today's petroleum refinery, which produce multiple fuels and chemical products from petroleum. A biorefinery is a facility that integrates biomass conversion processes and equipment to produce fuels, power, and value-added chemicals from biomass. Biorefinery is the co-production of a spectrum of bio-based products (food, feed, materials, and chemicals) and energy (fuels, power, and heat) from biomass [definition IEA Bioenergy Task 42]. By producing multiple products, a biorefinery takes advantage of the various components in biomass and their intermediates therefore maximizing the value derived from the biomass feedstocks. A biorefinery could, for example, produce one or several low-volume, but high-value, chemical or nutraceutical products and a low-value, but high-volume liquid transportation fuel such as biodiesel or bioethanol. Future biorefinery may play a major role in producing chemicals and materials as a bridge between agriculture and chemistry that are traditionally produced from petroleum. Industrial biotechnology is expected to significantly complement or replace the current petroleum-based industry and to play an important role.

• Journal of the Korean Institute of Traditional Landscape Architecture
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• v.31 no.2
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• pp.20-30
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• 2013

'Paulownia tree', one of a tree species which has been with human civilization, has been widely used as a garden plant. The purpose of this study is to investigate concrete species of 'paulownia tree,' which had been planted in Korean traditional garden, the position of plantation, and consider its usefulness therefrom. The results of the study can be summarized as follows. 1. As the result of considering old literatures as encyclopedia, agricultural book (農書), gardening book, etc., there's a difference in the description of 'paulownia tree' depending on the complier, as well, the classification of concrete species is quite ambiguous. Therefore, it judged a limit which is planted based on point of the compass is not apply to species of tress of paulownia tree. Merely, the point of suitability and evasion(宜忌) related to the plantation of 'paulownia tree' could be identified in "Jeungbosanrimgyeongje(增補山林經濟) and "Imwongyeongjeji(林園經濟志)", not "Sanrimgyeongje (山林經濟)". 2. It could be confirmed again through poetry and prose which describe old garden that the words such as 'O(梧)', 'Dong(桐)', 'Odong(梧桐)', etc. were used without significant division. However, it is supposed that the species 'Odong' which was actually adopted at the garden might be Catalpa as well including Korean Paulownia and Chinese parasol tree. 3. It is considered that the reference point of suitability and evasion(宜忌) regarding 'paulownia tree' plantation was not generally applied. That is, species of paulownia tree was not divided for planting according to direction, as well, they seemed to willingly plant paulownia trees nearby the house as well, e.g. front yard or nearby yard, etc. 4. The usefulness of paulownia tree as a garden plant of an old garden played a role of 'the messenger of fall,' emphasizing a sense of the season. 5. Paulownia tree has another usefulness as a tree which adds an Ephemeral landscape. Therefore, the ancient people considered 'paulownia tree' that goes with 'the moon' the best, and enjoyed the quaint beauty of those two are juxtaposed. Also, 'paulownia tree' was utilized as a tree which adds an atmosphere of a rainy day, such as enjoying the sound of rain dropping on the 'paulownia tree', etc. The limitation of this study is that the research was performed being restricted to the translation among lots of Chinese references. Later-on task of research is the necessity of a more in-depth study through the discover of new historical sources and the accumulation of translation outcome.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.46 no.6
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• pp.453-458
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• 2001

The Rural Development Administration (RDA) of Korea now operates a system called Rice Variety Selection Tests (RVST), which are now being implemented in eight Agricultural Research and Extension Services located in eight province RVST's objective is to provide accurate yield estimates and to select well-adapted varieties to each province. Systematic evaluation of entries included in RVST is a highly important task to select the best-adapted varieties to specific location and to observe the performance of entries across a wide range of test sites within a region. The rice yield data in RVST for ordinary transplanting in Kangwon province during 1997-2000 were analyzed. The experiments were carried out in three replications of a random complete block design with eleven entries across five locations. Additive Main effects and Multiplicative Interaction (AMMI) model was employed to examine the interaction between genotype and environment (G$\times$E) in the biplot form. It was found that genotype variability was as high as 66％, followed by G$\times$E interaction variability, 21％, and variability by environment, 13％. G$\times$E interaction was partitioned into two significant (P＜0.05) principal components. Pattern analysis was used for interpretation on G$\times$E interaction and adaptibility. Major determinants among the meteorological factors on G$\times$E matrix were canopy minimum temperature, minimum relative humidity, sunshine hours, precipitation and mean cloud amount. Odaebyeo, Obongbyeo and Jinbubyeo were relatively stable varieties in all the regions. Furthermore, the most adapted varieties in each region, in terms of productivity, were evaluated.