• Title/Summary/Keyword: agricultural supply

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Development of a Fiber-Optic Biosensor for the Detection of Listeria monocytogenes (리스테리아 식중독균 검출을 위한 광학식 바이오센서 개발)

  • Kim G.;Choi K.H.
    • Journal of Biosystems Engineering
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    • v.31 no.2 s.115
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    • pp.128-134
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    • 2006
  • Frequent outbreaks of foodborne illness demand the need for rapid and sensitive methods for detection of these pathogens. Recent development of biosensor technology has a great potential to meet the need for rapid and sensitive pathogens detection from foods. An antibody-based fiber-optic biosensor and an automated reagents supply system to detect Listeria monocytogenes were developed. The biosensor for detection of Listeria monocytogenes in PBS and bacteria spiked food samples was evaluated. The automated reagents supply system eliminated cumbersome sample and detection antibody injection procedures that had been done manually. The biosensor could detect $10^4$ cfu/ml of Listeria monocytogenes in PBS. By using the fiber-optic biosensor, $2x10^8$ cfu/ml of Listeria monocytogenes in the food samples were detectable.

Assessment of paddy rice evapotranspiration estimation methods based on comparisons of agricultural water supply (농업용수 공급량과의 비교를 통한 논벼 증발산량 산정 방법 평가)

  • Kim, Sanghyun;Cho, Gunho;Choi, Kyungsook
    • Journal of Korea Water Resources Association
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    • v.53 no.12
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    • pp.1131-1142
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    • 2020
  • This study assessed evapotranspiration (ET) methods applying for estimation of paddy rice water demand based on agricultural water supply. The Modified Penman (MP) method and the Penman-Monteith (PM) method recently suggested by Rural Development Administration (RDA) were considered. The 6 Korea Rural Community Corporation (KRC) command areas located in Honam province were selected in this study. The climate characteristics were also analysed with the average annual and the growing season temperatures and rainfalls. As a result, the annual average and the growing season temperature showed the increased trend while the rainfall tended to decrease during 30 years. The paddy rice water demand found to be directly influenced by these climate trends as ET also affected by them. The higher values of paddy rice water demand were obtained from applying MP method compared to the one applying PM method. The lower differences were also obtained from MP method for the comparisons between the paddy rice water demand estimated by both methods with agricultural water supply. Therefore, these results suggest that the MP method is more desirable to use for estimating paddy rice water demand in order to achieve stability of irrigation designs and plans.

Analysis and Evaluation of Life SOC in Boeun-gun According to Minimum Criterion of Basic Life Infrastructures (기초생활인프라 최저기준에 따른 보은군의 생활인프라 시설 충족도 분석 및 유형화)

  • Yang, Seunghwan;Lee, Byungjun;Yoon, Seongsoo
    • Journal of The Korean Society of Agricultural Engineers
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    • v.62 no.3
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    • pp.15-27
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    • 2020
  • Living infrastructure facilities are concentrated in cities with high population density, it is necessary to supply basic living infrastructure facilities to promote welfare in rural areas. The establishment of basic living infrastructure is the minimum right for daily living of local residents. It is supplied by considering national economic and social characteristics through national minimum standards, but it is limited to be practically applied to rural areas where many villages are dispersed in large areas. There is a situation. Therefore, it is necessary to supply systematic and quantitative facilities by analyzing villages that do not meet the minimum standards of basic living infrastructure in rural areas and by considering their characteristics. The purpose of this study is to identify the basic living infrastructure facilities of village units and analyze the characteristics of each village for Boeun-gun, Chungcheongbuk-do.

MILLING CHARACTERISTICS OF BROWN RICE USING A CONTINUOUS TYPE CONDITIONER

  • Song, D.B.;Han, K.Y.;Kim, S.T.;Choi, B.J.
    • Proceedings of the Korean Society for Agricultural Machinery Conference
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    • 2000.11b
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    • pp.423-429
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    • 2000
  • The water conditioning experiments of brown rice were performed to verify the effect of brown rice conditioner and to decide the optimum operating variables for the conditioner. The initial moisture contents of 13-14%(wb) brown rice were used as experimental samples. The flow rate of brown rice passing through the conditioner was 2,940 kg/hr and water was supplied proportionally from 80 cc/min to 240 cc/min. The differences between expected and measured moisture contents were neglected except 0.25%(wb) of the maximum differences at 0.2920((cc/min)-water/(kg/min)'%-brown rice) of water supply rate. For the initial moisture contents of 13-14%(wb) brown rice, it was found that a proper water supply rate was 0.2415((cc/min)-water/(kg/min).%-brown rice) and the increments of whole rice was 2.3% compared to non conditioned ones. It was considered that the conditioning process did not influence the whiteness of milled rice because the whiteness differences between conditioned and non-conditioned milled rice were negligible.

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Classifying Agricultural Districts for Prioritizing Groudwater Development Area based on Correlation and Cluster Analysis (가뭄 대응형 지하수 개발 우선순위 선정을 위한 농촌용수구역의 유형 분석)

  • Oh, Yun-Gyeong;Lee, Sang-Hyun;Kim, Ara;Hong, Soun-Ouk;Yoo, Seung-Hwan
    • Journal of Korean Society of Rural Planning
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    • v.26 no.2
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    • pp.51-59
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    • 2020
  • In this study, we analyzed the characteristics of 511 agricultural districts through statistical data, and classify these districts as the vulnerable area to drought through correlation and cluster analysis. The criteria for classification was related to ground-water recharge, irrigation water demand, and water supply. As a result, 8 types of agricultural districts were extracted. For example, the type 1 indicated the high priority area for ground-water development, thus the districts which were classified as type 1 showed ground-water use was less than 80 % of maximum capacity, and irrigation water supply was only 37.5 % and 76.5 % of irrigation water demand in upland and paddy field, respectively. As a result, 44 of 511 districts were classified as type 1.36 districts (types 5-8) were areas where groundwater development is limited. The results of this study are expected to provide useful information for establishing the direction of the rural area development project in connection with the revitalization of policy of people return to rural area.

MODFLOW-Farm Process Modeling for Determining Effects of Agricultural Activities on Groundwater Levels and Groundwater Recharge

  • Bushira, Kedir Mohammed;Hernandez, Jorge Ramirez
    • Journal of Soil and Groundwater Environment
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    • v.24 no.5
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    • pp.17-30
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    • 2019
  • Intensive agricultural development in Mexicali valley, Baja-California, Mexico, has induced tremendous strain on the limited water resources. Agricultural water consumption in the valley mainly relies on diversions of the Colorado River, but their water supply is far less than the demand. Hence, the use of groundwater for irrigation purposes has gained considerable attention. To account for these changes, it is important to evaluate surface water and groundwater conditions based on historical water use. This study identified the effects of agricultural activities on groundwater levels and groundwater recharge in the Mexicali valley (in irrigation unit 16) by a comprehensive MODFLOW Farm process (MF-FMP) numerical modeling. The MF-FMP modeling results showed that the water table in the study area is drawn downed, more in eastern areas. The inflow-outflow analysis demonstrated that recharge to the aquifer occurs in response to agricultural supplies. In general, the model provides MF-FMP simulations of natural and anthropogenic components of the hydrologic cycle, the distribution and dynamics of supply and demand in the study area.

Development of Clean Water Supplying System for Greenhouse Cultivation and Convenience Water (II) - Assessment of the FDA System through a Site Application - (시설용수 및 영농편의용수 공급시스템 개발 (II) - FDA 시스템 현장적용성 평가 -)

  • Lee, Kwang-Ya;Choi, Kyung-Sook
    • Journal of The Korean Society of Agricultural Engineers
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    • v.51 no.5
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    • pp.101-106
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    • 2009
  • The previous study developed the Filter-Disinfection-Adsorption (FDA) system to provide clean irrigation water for greenhouse cultivation as well as convenience water to farmers. In this study, the field examination was undertaken to assess performance of the FDA system. The field application was made in the suburb of Daegu, one of the large city in Korea. The study area located near by down-stream of Gum-Ho river is suffering low irrigation water quality problems with no water supply service facilities. Four water quality parameters including Suspended Solid (SS), Biological Oxygen Demand (BOD), coliform, and turbidity were selected to test the purification performance of FDA system. Also in order to improve the system, this study investigated the defects of using the FDA system through field monitoring. As results, it was found that this system can be used to supply good quality of irrigation water for greenhouse cultivation and also provide convenience water to farmers in the field areas of no water supply services.

Network Modeling of Paddy Irrigation System using ArcHydro GIS (ArcHydro를 이용한 GIS기반의 관개시스템 네트워크 모델링)

  • Park, Geun-Ae;Park, Min-Ji;Jang, Jung-Seok;Kim, Seong-Joon
    • Proceedings of the Korea Water Resources Association Conference
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    • 2006.05a
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    • pp.323-327
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    • 2006
  • During the past decades in South Korea, there have been several projects to reduce water demand and save water for paddy irrigation system by automation. This is called as intensive water management system by telemetering of paddy ponding depth and canal water level and telecontrol of water supply facilities. This study suggests a method of constructing topology-based irrigation network system using GIS tools. For the network modeling, a typical agricultural watershed included reservoirs, irrigation and drainage canals, pumping stations was selected. ArcHydro tools composed of edge, junction, waterbody and watershed were used to construct hydro-network. ArcHydro Model was then designed and the network was successfully built using the HydroID. Visualization using ArcHydro tools could display table property of each object. ArcHydro Model was linked to Agricultural Water Demamd and Supply Estimation System (AWDS) which developed by Korea Rural Community and Agriculture Corporation (KRC) to extract information of the study area. And menu of supply facilities information, demand analysis and supply analysis constructed for information acquisition and visualization of acquired informations.

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A Study on Effects of SCM and CSR of Food Export Corporation on Food Safety (식품수출기업의 SCM과 CSR이 식품안전에 미치는 영향에 관한 연구)

  • Pak, Young-Hyun;Pak, Myong-Sop
    • Korea Trade Review
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    • v.44 no.2
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    • pp.63-82
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    • 2019
  • Due to technological development in the globalized food system, quantitative problems of food supply have been solved, but food risks have expanded from problems in specific regions to global problems. In order to maximize the efficiency of agricultural production, the growth in agricultural production system, procirement of raw materials, establishment of food processing processes and establishment of food supply chain systems are required. Control of hazards requires facility and administrative efforts. In this study, we examined the role of CSR in conjunction with food safety. Food SCM is related to food safety and correlates with the food supply chain. In terms of the triple bottom line theory, CSR is correlated with SCM and it is possible to pursue food safety through corporate CSR and SCM. In this study, it is statistically confirmed that SCM and CSR are in a positive relationship. In the impact of CSR on food safety, it has been confirmed that economic responsibility and legal responsibility take precedence over environmental responsibility and social responsibility. Based on this, we can achieve food safety through SCM and CSR, and we can decide which of CSR activities can be prioritized.

Analysis on Spatial Pattern of Child Care Environment in Rural Area using Accessibility (접근성을 이용한 농촌지역 유아보육환경의 공간적 특성 분석)

  • Jeon, Jeongbae;Park, Meejeong;Choi, Jinah;Lim, Changsu;Kim, Eunja
    • Journal of Korean Society of Rural Planning
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    • v.24 no.1
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    • pp.1-10
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    • 2018
  • This study is to evaluate the per capita accessibility to child care facilities using road map in rural village unit considering the supply and demand of child care facilities in municipal (Si-Gun) units. Using these estimated accessibility, the most accessible regions to child care facilities was identifies using Moran's index. Assuming establish a new child care facility in the most accessible region, the sensitivity of child care environment was analyzed. The number of regions are 71 si-gun-gu where supply of child care facilities is insufficient. The average accessibility per capita is 1.09 km to child care facilities and the average accessibility in Myeon unit is approximately 2.2 times higher than accessibility in Eup unit (Eup unit 0.54 km, Myeon unit 1.21 km). Approach tendency from village to child care facilities has positive relationship as 0.451 global Moran's index. The high-high (H-H) accessibility regions are wide as Gangwon-do, Gyeongsangbuk-do, Gyeongsangnam-do, Jeollanam-do and Chungcheongbuk-do. Assumed to be established the new child care facilities in Yangyang-gun (Ganwon-do), accessibility changes of child care environment are up to 2.7 times greater and the recipient population is 77% of Yangyang-gun.