• Korean Journal of Plant Resources
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• v.32 no.2
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• pp.170-200
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• 2019

This study was carried out to investigate the vascular plants of Mt. Choejeong in Gachang-myeon, Daegu. From March 2017 to October 2018, a total of 22 studies were conducted. The vascular plants surveyed were grouped into 560 taxa, including 104 families, 297 genera, 495 species, 4 subspecies, 51 varieties and 10 forma. Endemic plants 15 taxa, Rare plants 5 taxa, Red list plants 5 taxa, Floristic regional indicator plants 54 taxa, Naturalized plants 36 taxa were recorded. Among surveyed 560 taxa, edible, medicinal, ornamental, timber, pasturing, industrial and fiber plants included 246 taxa (29.2%), 228 taxa (27.1%), 164 taxa (19.5%), 61 taxa (7.2%), 13 taxa (1.5%), and 8 taxa (0.9%). And because people are coming and going more frequently than in the past, this will result in more frequent influx of naturalized plants and a threat to the habitat of the plants that are currently growing.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.11
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• pp.5052-5059
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• 2012

This study was carried out to find consumers' attributes and willingness to pay(WTP) of agricultural products cultivated from plants factory system. The agricultural products were sorted into lettuce, strawberry, Ligularia fischeri(wild edible greens), and ginseng. We made the questionaires to survey consumers' purchasing attributes and preference of agricultural products. Finally, 200 valid replies were selected to analyze consumers' attributes and to estimate marginal willingness to pay. We used conjoint analysis and multinomial logit model for empirical analysis. MWTPs of commodities are estimated as follows; Lettuce is 1,016KW(100g), Strawberry is 6,014KW(2kg), Ligularia fischeri is 3,652KW(100g), and Ginseng is 5,905KW(100g). Several attributes of consumers' purchasing behavior were identified from this study. We suggested several implications to formulate more appropriate policy of plants factory system.

• Journal of Korean Society on Water Environment
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• v.29 no.2
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• pp.276-287
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• 2013

Domestic sewage contains increasingly more pharmaceuticals and personal care products (PPCPs), due to rising use of medicines, health supplement food and daily necessities. And various types of industrial wastewater from pollution sources in treatment areas could flow into the public sewerage treatment plants (PSTPs) in metropolitan areas. The conventional PSTPs are designed to treat suspended solids, biodegradable organics, nitrogen and phosphorous from residential and industrial areas and public facilities. However, toxic, conventional, and non-coventional pollutants from non-domestic sources that discharge into sewer system as well as domestic source with various chemicals could not be treated in the conventional PSTPs and discharged untreated to public basin. In this paper we aim to consider the establishment system of effluent standard of PSTPs in comparison with water quality standard of water environment and wastewater discharge regulation. And also we suggest the necessity of regulations on the pretreatment of industrial wastewater as part of efforts to improve water quality in sewerage systems and to protect public basin.

• Korean Chemical Engineering Research
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• v.58 no.4
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• pp.514-523
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• 2020

Plants are exposed to various types of stresses in their surroundings, and stress-resistant and regulatory proteins are produced as defense mechanisms. Abscisic acid is well known for its important role in stress signals as a phytohormone and is also involved in the physiological reactions of plants such as leaf senescence and seed dormancy. In particular, it has been found to perform a variety of functions in other biological systems, such as animals and microalgae, not plants. In this review, the biosynthesis and signaling process of abscisic acid and its function were investigated and the future prospects for the industrial application of abscisic acid in various biotechnologies, including agriculture, biomedical and industrial biotechnology, have been proposed based on study of emerging applications such as increased crop yields, disease treatment development and bioenergy production.

• Molecules and Cells
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• v.25 no.2
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• pp.272-278
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• 2008

The carbon-ion beam (CIB) generated by the heavy-ion medical accelerator in Chiba (HIMAC) was targeted to 7-day-old rice. Physiological parameters such as growth, and gene expression profiles were examined immediately after CIB irradiation. Dose-dependent growth suppression was seen three days post-irradiation (PI), and all the irradiated plants died by 15 days PI. Microarray (Agilent rice 22K) analysis of the plants immediately after irradiation (iai) revealed effects on gene expression at 270 Gy; 353 genes were up-regulated and 87 down-regulated. Exactly the same set of genes was affected at 90 Gy. Among the highly induced genes were genes involved in information storage and processing, cellular processes and signaling, and metabolism. RT-PCR analysis confirmed the microarray data.

• Korean Journal of Medicinal Crop Science
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• v.23 no.3
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• pp.214-222
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• 2015

This study was conducted to evaluate the growth conditions and vegetation of Peucedanum japonicum habitat in uninhabited islands of Incheon Korea. The emergence area of Peucedanum japonicum was 4.9 m distance in coastline, and altitude and slope was 7.4m and 47.5%. Soil pH, organic matter and $P_2O_5$ of habitat were 7.1, 8.3% and 29.0 mg/kg, and contents of K, Ca, Mg and Na were 0.66, 4.9, 3.4 and $1.13cmol^+/kg$, respectively. Growth plants with Peucedanum japonicum were total 55 taxa, and Gakeuldo in uninhabited islands was the most as 25 taxa. In growth plants with Peucedanum japonicum, plants of over 25% frequence per plot were Miscanthus sinensis, Dendranthema boreale, Lilium lancifolium, Hemerocallis middendorffii, Elymus dahuricus, Cirsium japonicum var. maackii, Asparagus schoberioides, Gypsophila oldhamiana, Cocculus trilobus, Silene aprica var. oldhamiana, Artemisia capillaris, Crepidiastrum denticulatum and Sedum oryzifolium. The vegetation of Peucedanum japonicum habitat was classified into Aster spathulifolius community, Miscanthus sinensis community, Dendranthema boreale community, Setaria viridis var. pachystachys community, Cirsium japonicum var. maackii community and Hemerocallis middendorffii community. According to general condition of habitat, suitable growing areas was determined to slightly acidic from mild alkaline soils.

• Journal of Korean Society of Water and Wastewater
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• v.33 no.5
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• pp.329-339
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• 2019

Recently, the advancement of information and communication technology(ICT) is expanding the connectivity through Internet of Things(IoT), and the media of connection is also expanding from wire/cable transmission to broadband wireless communication, which has significantly improved mobility. This hyperconnectivity has become a key element of the fourth industrial revolution, whereas the supervisory control network of purification plants in korea is operated as a communication network separated from the outside, thereby lagging in terms of connectivity. This is considered the best way to ensure security, and thus there is hardly any consideration of establishing alternatives to operate an efficient and stable communication network. Moreover, security for management of a commercialized communication network and network management solution may be accompanied by immense costs, making it more difficult to make new attempts. Therefore, to improve the conditions for the current supervisory control network of purification plants, this study developed a industrial security L2 switch that supports modbus TCP(Transmission Control Protocol) communication and encryption function of the transmission section. As a result, the communication security performance improved significantly, and the cost for implementing the network management system using Historical Trend and information of HMI(Human Machine Interface) could be reduced by approximately KRW 200 million. The results of this study may be applied to systems for gas, electricity and social safety nets that are infrastructure communication networks that are similar to purification plants.

• Journal of Korean Society for Atmospheric Environment
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• v.2 no.3
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• pp.1-10
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• 1986

Nowadays, air pollution by increasing consumption of fossil fuels resulting from rapidly growing population and industrialization has caused the adverse effects on terrestrial ecosystems and become one of the most serious problems causing environmental discriptions. Air pollution such as $SO_2, HF, NO_X,$ fly ash, ozone and PAN might influence plant growth, reproduction, nutrient cycling, photosynthesis and predisposition to entomological and pathological stresses on plants. Furthermore, accumulation of those toxic substances in forests might cause subtle or serious changes in the structure and function of forest ecosystems. Since 1970s, a number of large industrial complexes had been constructed as a part of industrialization plan in Korea. Accordingly, the forest exosystems around them has been under chronic influences of air pollution and effects of air pollution on plants became a matter of concern. In Yocheon Industrial Complex which consisted of lots of petrochemical plants and a phosphatic fertilizer manufacturing plant, forests has been exposed to chronic air pollution, mainly HF and $SO_2$ gas, Various reports were available to investigate the potential effects of air pollution on crops and forest trees in Yocheon. Kim and Kim surveyed vegetation by naked eye method and reported 71 families, 150 genera and 158 species were growing within a 2 km from air pollution sources in 1981. Needle injuries on Pinus spp. in the polluted area water reported by Kim, et al. and Kim, et al. Kim, et al. investigated the primary production of Pinus thunbergii forests in the polluted area and verified that growth inhibition of Pinus thunbergii was attributable to air pollution. Thus, previous reports suggested that forest ecosystems around Yocheon Industrial Complex were influenced adversely by air pollution. The objective of this study was to investigate the subtle ecological changes in forest community exposed to chronic air pollution in Yocheon.

• Korean Journal of Plant Resources
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• v.30 no.2
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• pp.191-213
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• 2017

This study was conducted to elucidate the distribution of vascular plants and their value of Mt. Samyeong. The vascular plants that were collected 10 times from October 2013 to July 2015 consisted of a total of 538 taxa; 92 families, 308genera, 466 species, 3 subspecies, 62 varieties and 7 forms. The observed rare plant species as designated by Korea Forest Service were 24 taxa. Endemic species were 25 taxa. 28 taxa were recorded as naturalized plants and their naturalized rate and urban index were noted as 5.3% and 8.7%. Among the surveyed 538 taxa, edible, medicinal, pasturing, ornamental, timber, dye, fiber and industrial plants included 220 taxa, 195 taxa, 167 taxa, 65 taxa, 25 taxa, 8 taxa, 6 taxa and 3taxa, respectively.

• Journal of the Korean Institute of Gas
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• v.20 no.5
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• pp.17-26
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• 2016

Chemical plants and oil gas refinery facilities are intrinsically vulnerable to industrial hazards, such as explosion or fire. Especially, the fire is extremely dangerous to facility structures and plant personnel because of direct flame, radiant heat and smoke. In addition, it has the ripple effect of destroying infra-structures and polluting the environment. In an effort to tackle these potential industrial risks, the procedure of FRA techniques in chemical plants were investigated. The main focus was put on the time variation of physical properties of the main building, i.e. control rooms, warehouses and electrical substations, from a direct flame contact and radiant heat. The deformation of a building due to fire was monitored and modeled with respect to time variable. A variety of case studies, domestic and abroad, was tested in the model to verify the FRA procedure. The developed model was proven to be highly effective to reduce the possible risks at chemical plants. An accurate accident frequency prediction and damage quantification was made by the developed model.