• 농촌계획
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• 제20권1호
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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.

• 자원리싸이클링
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• 제33권1호
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• pp.58-68
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• 2024

핵심광물인 니켈, 코발트, 리튬은 NCM계 리튬이온배터리(이하 LIB)의 양극소재로 알려져 있다. 탄소중립 기조에 따라 전기자동차의 보급량 증가로 핵심광물 수요도 증가할 것으로 예상된다. 하지만, LIB용 핵심광물 Li, Co, Ni의 수요대비 공급 부족으로 인해, 폐리튬이온배터리(EOL LIB)의 리싸이클링 수요가 증가할 것으로 예상된다. EOL LIB(폐 LIB) 재활용은 유해화학물질 무기산 침출제인 염산(HCl), 질산(HNO₃), 황산(H₂SO₄)을 침출공정에 적용하여 재활용한다. 본 연구에서는 친환경 대체침출제 메탄술폰산(이하 MSA)의 적용 가능성을 검토하였다. 또한, 침출제 농도, 환원제 농도, 침출시간, 광액농도(P/D), 온도 등의 침출인자가 NCM Black mass 침출에 미치는 영향을 연구하였다. 침출실험 결과, 침출제와 환원제 농도, 침출시간, 침출온도가 증가함에 따라 목적금속 Ni, Li, Co, Mn의 침출률이 향상됨을 확인하였고, 금속의 최대 침출률은 80℃에서 99% 이상으로 나타났다. 또한, MSA는 NCM Black mass 대상 침출에 적용하여 Ni, Li, Co, Mn을 회수할 수 있음을 확인하였다.

• Ocean and Polar Research
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• 제23권3호
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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.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2006년도 학술발표회 논문집
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• pp.1726-1731
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• 2006

본 연구에서는 임하다목적댐의 비상여수로 설계를 위하여 수리모형실험과 수치모형실험을 수행하였다. 수치모의에는 3차원 수치모형인 FLOW-3D를 사용하였다. 비상여수로 설계를 위하여 접근수로부, 월류웨어부, 천이부 및 도류부, 그리고 감세부로 나누어 수리모형실험과 수치모형실험의 수리현상 결과를 비교하였다. 최적의 비상여수로 설계를 위하여 기본계획안에 대하여 모의하고 이에 대한 보완점과 문제점들을 찾아내고 해결책을 제시하였다. 수치모의를 통하여 수리모형실험에서 쉽게 수행하기 어려운 다양한 조건을 모의하고 최적의 결과에 찾아 이를 수리모형실험으로 검증함으로써 비상여수로 기본설계안을 도출하였다.

• 한국축산식품학회지
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• 제42권4호
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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.

• 한국수자원학회논문집
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• 제53권11호
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• pp.961-971
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• 2020

본 연구에서는 강수를 대체수원으로 효과적으로 이용할 수 있는 방안의 하나로 빗물집수시스템을 공유하는 RBSN (Rain Barrel Sharing Network)을 소개하고, 현 상태 및 미래 기후변화 조건하에서의 효율에 대해 평가하였다. 우리나라 17개 특별시, 광역시 및 도를 대상으로 RBSN를 적용했을 때 미적용시와 비교하여 신뢰도, 회복탄력도 및 취약도의 변화를 분석하고, 지역별, RCP 시나리오별로 비교 검토하였다. 검토결과 현 기후조건하에서도 RBSN을 통해 평균 60%이상의 빗물집수시설의 필요 저류용량을 저감할 수 있는 것으로 검토되었으며, 기후변화 조건하에서는 이러한 효용이 지역별로 다른 양상으로 나타났다. 본 연구 결과를 바탕으로 향후 빗물집수시설의 공동 이용에 대한 필요성이 더욱 부각될 수 있을 것으로 판단된다.

• 농촌계획
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• 제25권2호
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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.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2022년도 추계학술대회
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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.

• 한국버섯학회지
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• 제18권2호
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• pp.141-144
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• 2020

BW를 이용하여 느타리를 재배함에 있어 면실박을 대체할 수 있는 재료를 찾기 위해 시험이 진행되었다. 일반성분 분석에서 BW가 면실박에 비해 단백질 함량은 다소 떨어졌으나 자실체의 생육특성에서 BW 혼합 시 대조구와 수량 등의 생육특성이 유사함을 확인할 수 있었고, 자실체의 구성아미노산 조성 확인결과 처리구 간 아미노산의 함량은 큰 차이를 나타나지 않았다. 따라서 BW가 느타리 배지제작에 있어 면실박을 대체하여 사용될 수 있을 것으로 판단된다.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2008년도 학술발표회 논문집
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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.