• Journal of Korean Society of Rural Planning
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• v.20 no.1
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• pp.147-159
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• 2014

This study aims to draw up a basic plan to construct an agricultural theme park in a farming city as a way of establishing its regional identity represented by "Three Whites". Sangju, Kyongsangbuk-do which is the subject area of the study has been well-known for "Three Whites (rice, silkworm cocoon and dried persimmon)." The purpose of the study is to take a closer look at the folk life and culture of Sangju and develop tourism resources to promote regional development and competitiveness of the city. This study was conducted in several phases in consideration of the characteristics of plan and design, on the basis of the theoretical review of agricultural tourism. In the first phase, planning conditions were analyzed as per development objectives. In the second phase, strategies and concepts were established for the theme park, based on which development methods were decided by phase and facility. Then, a preliminary review was conducted on functions and facilities to introduce to the theme park. In the third phase, a comprehensive plan was drawn up, which includes basic plans for respective parts. In consideration of the characteristics of the study, construction was not looked at in detail. The total size of land subject to the study is approx. $97,960m^2$, which was divided into four separate zones--Sambaek Cultural Experience Zone, Natural Observation & Experience Zone, Agricultural Life Experience Zone and other facilities zone--in order to connect facilities, functions and experience with the physical characteristics of the city, and separate space planning was conducted for each zone. The outcome of the study carries significance as an example of alternative tourism which considers regional characteristics, develops local resources and makes use of obsolete rural facilities, in what is called the eco-friendly development where nature and eco-system, landscape and culture, and recreation and leisure come together as one.

• Resources Recycling
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• v.33 no.1
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• pp.58-68
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• 2024

Critical minerals such as nickel, cobalt and lithium, are known as materials for cathodic active materials of lithium ion batteries. The consumption of the minerals is expected to grow with increasing the demands of electric vehicles, resulting from carbon neutrality. Especially, the demand for LIB (lithium ion battery) recycling is expected to increase to meet the supply of nickel, cobalt and lithium for LIB. The recycling of EOL (end-of-life) LIB can be achieved by leaching EOL LIB using inorganic acid such as HCl, HNO₃ and H₂SO₄, which are regarded as hazardous materials. In the present study, the potential use of MSA (Methanesulfonic acid), as an alternative lixiviant replacing sulfuric acid was investigated. In addition, leaching behaviors of NCM black mass leaching with MSA was also investigated by studying various leaching factors such as chemical concentration, leaching time, pulp density (P/D) and temperatures. The leaching efficiency of nickel (Ni), cobalt (Co), lithium (Li), and manganese (Mn) from LIB was enhanced by increasing concentration of lixiviant and reductant, leaching time and temperature. The maximum leaching of the metals was above 99% at 80℃. In addition, MSA can replace sulfuric acid to recover Ni, Co, Li, Mn from NCM black mass.

• Ocean and Polar Research
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• v.23 no.3
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• pp.279-284
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• 2001

The natural high productivity of temperate coastal waters in Korea can be used in advantage to reduce the feed costs for the cage-cultured marine carnivorous fish species. By using the night-lights methods an alternative of supplementary feeding strategy can be offered to the cage farmers and maintain sound environmental conditions that could enhance maximum sustainable yields. The aim of this study was to investigate the effects of night-lights which shown positive results on feeding and growth in sea cage cultured rockfish, Sebastes schlegeli. The study showed that for the water around overhead illuminated sea cage, higher zooplankton density was observed at night than during the daytime. Increased amounts of for-age, evidenced by stomach content analyses were observed in the early evening, but decreased amounts were observed in the morning and afternoon. That is, feeding activities of the fish were most intensive from midnight to dawn. In a three month feeding experiment, the results showed that night-lighted groups were superior to groups with the highest feeding efficient. This study suggested that the evidence that night-lights superimposed on only day-lights enhance growth of rockfish in sea cages during summer and winter, with timing of exposure affecting growth of juvenile fish. The capability to control the feeding behavior of marine life via manipulation and external stimuli could considerably benefit the advancement of sea cage aquaculture in coastal areas.

• Proceedings of the Korea Water Resources Association Conference
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• 2006.05a
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• pp.1726-1731
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• 2006

Hydraulic and numerical models were applied to design the emergency spillway of ImHa multipurpose Dam. For the numerical model, FLOW-3D was used to evaluate the three-dimensional flow in the spillway. The results of hydraulic model were compared with those of the numerical model which were separated into four zones such as approaching zone, weir zone, transition & tunnel chute zone, and dissipator zone. Moreover, for optimum design of the spillway, the hydraulic and numerical models were performed for the basic plan. Solving the problems of the basic plan, the optimized alternative design was proposed. The numerical models for various conditions of the spillway were performed, which is not always feasible in the hydraulic models. Verified by using the hydraulic models, the optimum alternative design was proposed.

• Food Science of Animal Resources
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• v.42 no.4
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• pp.609-624
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• 2022

Tenebrio molitor larvae, as known as edible insects, has advantages of being rich in protein, and has been recognized as a suitable alternate protein source for broiler and pig feed. Moreover, given their ability to biodegrade polystyrene, a major pollutant, Tenebrio molitor larvae has been proposed as an innovative solution to environmental problems. In the present study, we investigated the toxicity of Tenebrio molitor larvae powder (TMlp) ingested with expanded-polystyrene (W/ eps) through in vitro and in vivo experiments. The objective of this study was to determine whether TMlp W/ eps can be applied as livestock alternative protein source. For in vitro experiments, cytotoxicity test was performed to investigate the effects of TMlp-extract on the viability of estrogen-dependent MCF-7 cells. The possibility of estrogen response was investigated in two groups: Expanded-polystyrene-fed (W/ eps) TMlp group and without expanded-polystyrene-fed (W/o eps) TMlp group. For in vivo experiments, The male Sprague-Dawley rats were divided based on the dosage of TMlp administered and oral administration was performed to every day for 5 weeks. A toxicological assessments were performed, which included clinical signs, food consumption, body and organ weights, hematology, serum chemistry, and hematoxylin and eosin staining of liver and kidney. There were no specific adverse effect of TMlp W/ eps-related findings under the experimental conditions of this study, but further studies on both sexes and animal species differences should be investigated. In conclusion, TMlp W/ eps was considered non-toxic and observed to be applicable as an alternative protein source for livestock feed.

• Journal of Korea Water Resources Association
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• v.53 no.11
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• pp.961-971
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• 2020

The Intergovernmental Panel on Climate Change (IPCC) reported that the amount of precipitation in South Korea would increase regardless of the reduction of Greenhouse Gas (GHG) emissions. Moreover, the temporal and spatial rainfall variation would also increase in the future. Due to the geographic allocation of Korea, more than 80% of the annual precipitation occurs in the wet season from early July to late September. It is expected that the average precipitation in this period will increase from the Representative Concentration Pathways (RCP) scenario projections. These predictions imply an increased variability of available water resources. Rainwater harvesting system is widely used as an alternative water resources today. This study introduces a RBSN (rain barrel sharing network) as an efficient way to utilize alternative water resources under the RCP scenarios. The concept of RBSN combines individual rainwater harvesting system to a sharing network, which make the whole system more reliable. This study evaluated a RBSN in South Korea composed of four users based on a storage-reliability-yield (SRY) relationship. The study area comprises all 17 provincal areas in South Korea. The result showed a huge benefit from a RBSN in Korea under the historical rainfall condition. Even in the climate change condition, the results showed that a RBSN is still beneficial but the changes in reliability are different depending on provinces in Korea. The results of this study shows that a RBSN is a very effective and alternative measure that can deal with the impacts of climate change in the near future.

• Journal of Korean Society of Rural Planning
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• v.25 no.2
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• pp.1-13
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• 2019

The rural development policies and projects in Korea has been implemented with various related acts. For instance, these acts include Framework Act on the National Land, National Land Planning Utilization Act, Special Act on Balanced National Development, etc, enacted by each of adminstration. However, there are some limitations to encourage the variety of rural development policies due to duplication and overlapping between the relevant acts. Nowadays, the fields of rural development have been evolved and integrated not only by agricultural infrastructures but also in various fields such as multi-functional industry including rural tourism, green care, and cultural welfare, etc. Therefore, the current legal system may not effectively accept and support in various rural development policies and projects at all. This study tried to figure out the necessity of reorganization related legal system through the field survey to planners, residents and analysts regarding the correlation between legal systems and projects. For these reasons, this study tried to find out the problem of current legal system and then, suggested alternative methods related to the legal system for integrated rural development. The scope of the study is as follows; 1)correlation analysis between relevant laws and rural development projects. 2)field survey to figure out the legitimacy and validity for the reorganization of the legal system. At last the result of the research has suggested an alternative method to reorganize the legal system and proposed the new legal system with is good for integrated rural development.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2022.09a
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• pp.106-106
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• 2022

The cone of Red Pine (Pinus densiflora), which has been used as a drug in traditional medicine. Its ethyl acetate fraction was reported to exert antioxidant, anti-melanogenesis, and anti-inflammation activites. Apoptosis of hepatic stellate cells (LX-2) is regarding as a potential strategy for alleviation of hepatic fibrosis. We conducted to investigated whether the treatment of cone has a potential to control of some factors related in apoptosis and autophagy in cell signaling pathways. We suggest that the cone induced apoptosis through confirming the expression levels of genes (cPARP, Bcl-XL, Bax, p53, and caspase-3) in LX-2 cells. Also, the cone may regulate autophagy (LC3, p62, Beclin-1, and ATG12). Remarkably, the treatment of cone may affect to formation of autophagosomes in the immunofluorescence image in live cells. These findings suggest that the ethyl acetate fraction from the cone of Red Pine (P. densiflora) may have potential as an alternative therapeutic agent for the alleviation and prevention of liver fibrosis.

• Journal of Mushroom
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• v.18 no.2
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• pp.141-144
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• 2020

In this study, we attempted to find alternative materials to replace Cotten seed meal(CM) using the wastes of bean sprouts by-product in bottle cultivation of Pleurotus ostreatus. In Proximate analysis, the protein content of BW was slightly lower than that of CM, but the growth characteristics of mushrooms were similar to those of control when byproduct of bean sprouts was used. In addition, the amino acid composition of fruit body did not show a significant difference in the treatment section. Therefore, it is judged that BW could be a suitable substitute for CM in the cultivation of Pleurotus ostreatus.

• Proceedings of the Korea Water Resources Association Conference
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• 2008.05a
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• pp.754-758
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• 2008

This study establishes management plan for water quantity and quality using PCSWMM and alternative evaluation index (AEI). PCSWMM can consider combined sewer overflows (CSOs) and simulate not only the flowrate but aslo the pollutant of BOD, SS, TN and TP for the effectiveness analysis of alternatives. Indicators of AEI are selected using sustainability evaluation concept, driver-pressure-state-impact-response (DPSIR) model and calculated by weighted summation method. These were applied for the Mokgancheon watershed which has many combined sewers. This result will be effective to the integrated watershed management for sustainability.