• Magazine of the Korean Society of Agricultural Engineers
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• v.23 no.4
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• pp.41-45
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• 1981

This study is to be surveyed the rural environmental conditions such as housing, water works, sewerage, road and farm road, land utilization, natural conservation and sightseeing, public damage and disaster, and rural water requirement through the 50 villages (10995 home unit) The brief results summarized in this study are as follows. 1.Modernization of rural housing, toilet room and arrangement of dust materials are getting better than before l0yrs. 2.Water works are highly improved but sewerage problem is still in the serious problems. 3.Rood achievement is quite good but farm road is in still insufficiency 4.Utilization of land resources should be maximaized but land conservation is still insufficient condition and farm land is getting polluted. 5.Natural environmental conservation is much more improved but landscape is still insufficient. 6.Public damages such as water pollution, air pollution, and others are getting greater and greater but meteorological damage should be decreased. 7.Watershed condition is getting better and better but because of the large requiriment of the water use for the crops, agricultural water use should be needed much more than before l0yrs.

• Journal of Agricultural Extension & Community Development
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• v.23 no.4
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• pp.405-418
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• 2016

Farmland conservation function of 'The Farmland Act' has been being weakened according as farmland conservation system came to the dualizing condition. Overall land use issues including farmland are determined by 'The National Land Planning Act'. In this process, much farmland has been disappeared unilaterally. Above all, 'The National Land Planning Act' recognized farmland as land for development rather than looking in conservation perspective. Formulating with a 'urban(rural) plan', 'The National Land Planning Act' brings means and development methods in a variety of setting. So 'The Farmland Act', the center of farmland conservation system, lose an effect of its conservation functions. Farmland is a kind of facility made with heavy investment for agricultural purpose definitely. Therefore conversion of recognition that farmland must not be undermined indiscriminately in dimension such as urban planning facilities.

• Toxicological Research
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• v.17
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• pp.71-77
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• 2001

The brain of the aged dog possesses senile plaques and amyloid angiopathy, which characterize Alzheimer's disease brains. We have defined the dementia condition of aged dogs and examined which mechanism(s) is responsible for the condition. A series of studies revealed that the dementia condition in aged dogs is significantly related to the number of apoptotic brain cells including both neurons and glial cells, but not to the number of senile plaques. On the other hand, 5-azacytidine (5AzC) is a cytidine analogue, and is thought to induce kinds of cell differentiation possibly through hypomethylation of genomic DNA. We have revealed neuronal apoptosis induced in 5AzC-treated fetal mice and PC12 cells. The ribosomal protein L4 (rpL4) gene is expressed prior to the apoptosis in the PC12 cell system. Therefore, the involvement of the rpL4 gene expression in age-related brain cell apoptosis in dogs may contribute to the investigation of Alzheimer's dementia.

• Smart Media Journal
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• v.12 no.10
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• pp.29-37
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• 2023

Human lifestyle is affected by the agricultural development in the last 12,000 years ago. The development of agriculture is one of the reasons that global population surged. To ensure sufficient food production for supporting human life, pesticides as a more effective and economical tools, are extensively used to enhance the yield quality and boost crop production. This study investigated the factors that affect crop production and whether the factors of pesticide usage are the most important factors in crop production using the dataset from Kaggle that provides information based on crops harvested by various farmers. Logistic regression is used to investigate the relationship between various factors and crop production. However, the logistic regression is unable to deal with predictors that are related to each other and identifying the greatest impact factor. Therefore, causal discovery is applied to address the above limitations. The result of causal discovery showed that crop condition is greatly impacted by the estimated insects count, where estimated insects count is affected by the factors of pesticide usage. This study enhances our understanding of the influence of pesticide usage on crop production and contributes to the progress of agricultural practices.

• Journal of Agricultural Extension & Community Development
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• v.22 no.2
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• pp.145-158
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• 2015

The purpose of this study is to analyze the current situation of farm labor and to propose directions to define government policies. First, present condition of family and employed agricultural workforce is analyzed. Second, characteristics in demand of agricultural workforce are analyzed in the consideration of distinctive types of each entity such as crop area. Third, currently existing agricultural workforce employment mechanism is researched and analyzed. Fourth, the policies and system related to agricultural labor market that have already been in practice are analyzed and tasks and direction in establishing those policies are proposed. This study will be helpful for policy makers to understand the agricultural labor markets and to build the institutional system for labor market services.

• Mycobiology
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• v.38 no.3
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• pp.195-202
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• 2010

Coriolus versicolor, is one of the most popular medicinal mushrooms due its various biologically active components. This study was conducted to obtain basic information regarding the mycelial culture conditions of C. versicolor. Based on the culture, and MCM media were suitable for the mycelial growth of the mushroom. The optimum carbon and nitrogen sources were dextrin and yeast extract, respectively, and the optimum C/N ratio was 10 to 2 when 2% glucose was used. Other minor components required for optimal growth included thiamine-HCl and biotin as vitamins, succinic acid, lactic acid and citric acid as organic acids, as well as $MgSO_4{\cdot}7H_2O$ as mineral salts.

• The Plant Pathology Journal
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• v.25 no.4
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• pp.333-343
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• 2009

Here, we show that an endophytic bacterial strain, Enterobacter asburiae B1 exhibits the ability to elicit ISR in cucumber, tobacco and Arabidopsis thaliana. This indicates that strain B1 has a widespread ability to elicit ISR on various host plants. In this study, E. asburiae strain B1 did not show antifungal activity against tested major fungal pathogens, Colletotrichum orbiculare, Botrytis cinerea, Phytophthora capsici, Rhizoctonia solani, and Fusarium oxysporum. Moreover, the siderophore production by E. asburiae strain B1 was observed under in vitro condition. In greenhouse experiments, the root treatment of strain B1 significantly reduced disease severity of cucumber anthracnose caused by fungal pathogen C. orbiculare compared to nontreated control plants. By root treatment of strain B1 more than 50% disease control against anthracnose on cucumber was observed in all greenhouse experiments. Simultaneously, under the greenhouse condition, the soil drench of strain B1 and a chemical inducer benzothiadiazole (BTH) to tobacco plants induced GUS activity which is linked with activation of PR promoter gene. Furthermore, in Arabidopsis thaliana plants the soil drench of strain B1 induced the defense gene expression of PR1 and PDF1.2 related to salicylic acid and jasmonic acid/ethylene signaling pathways, respectively. In this study, for the main focus on root colonization by strain B1 associated with defense responses, bacterial cells of strain B1 was tagged with the gfp gene encoding the green fluorescent protein in order to determine the colonization pattern of strain B1 in cucumber. The gfp-tagged B1 cells were found on root surface and internal colonization in root, stem, and leaf. In addition to this, the scanning electron microscopy observation showed that E. asburiae strain B1 was able to colonized cucumber root surface.

• Journal of Korean Society of Rural Planning
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• v.25 no.1
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• pp.99-111
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• 2019

To analyze main factors of size planning of community facilities that were created as part of development of a rural area, the present condition of factors deciding size of community facilities was analyzed, factors that influence size planning by the type of community facility were drawn with Delphi anaysis. The results of analyzing the present condition of size planning factors of community facilities show that facilities have been generally planned as multi-purpose and multi-functional facilities. And on the basis of the purpose of facilities, their functions and organization, and their operation programs, facilities are classified into community-centered, agritourism-centered, and combined ones. Using Delphi analysis, major factors that could affect size planning of community facilities were drawn on 26 community-centered, 28 agritourism-centered, and 30 combined. And the factors tended not to be applied well for size planning of community facilities.

• Journal of Apiculture
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• v.33 no.4
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• pp.251-260
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• 2018

Instrumental insemination of honey bee is an attractive alternative to natural mating in breeding program as it allows mating crosses between desirable queen and specific drone. However, nursery condition that the queen is kept before and after insemination is major factor affected to the performance of instrumentally inseminated queen. In this study, we evaluated the influences of three different nursery-conditions of push-in cages, mini nuclei and normal colonies on number of spermatozoa stored in the spermatheca, body weight, onset of ovipositon and performance of instrumentally inseminated Apis cerana queen. Our results demonstrated that instrumentally inseminated queens kept in mini nuclei and in normal hives showed no significant difference in queen's weight (159.8 and 166.2mg, respectively), number of spermatozoa in spermatheca ($2.02{\times}10^6$ and $2.76{\times}10^6$, respectively), proportion of queen supersedure (33.3 and 66.7% queen survival at 11 months after oviposition, respectively) and brood production, compared to naturally mated queens. In contrast, instrumentally inseminated queens kept in push-in cages showed significant difference of those above data in comparison to queens mated naturally. Our results suggested that instrumentally inseminated queens could be kept in mini nuclei containing about 1.000 attendant bees to have desirable performance of queen whereas the push-in method should be practiced for the purpose of using queen in the length of time less than 7 months.

• Korean Journal of Environmental Agriculture
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• v.41 no.1
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• pp.32-40
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• 2022

BACKGROUND: Climate-smart agriculture (CSA) has been proposed for sustainable agriculture and food security in an agricultural ecosystem disturbed by climate change. However, scientific approaches to local agricultural ecosystems to realize CSA are rare. This study attempted to evaluate the weather condition, rice production, and greenhouse gas emissions from the rice cultivation in Hwaseong-si, Gyeonggi-do to fulfill CSA of the rice cultivation. METHODS AND RESULTS: Over the past 3 years (2017~2019), Chucheong rice cultivar yield and methane emissions were analyzed from the rice field plot (37°13'15"N, 127° 02'22"E) in the Gyeonggi-do Agricultural Research and Extension Services located in Gisan-dong, Hwaseong-si, Gyeonggi-do. Methane samples were collected from three automated closed chambers installed in the plot. The weather data measured through automatic weather station located in near the plot were analyzed. CONCLUSION(S): The rice productivity was found to vary with weather environment in the agricultural ecosystem. And methane emissions are high in a favorable weather condition for rice growth. Therefore, it is necessary to minimize the trade-off between the greenhouse gas emission target for climate change mitigation and productivity improvement for CSA in a local rice cultivation.