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RISS 인기검색어
- 검색키워드
- 저자 : 신문호 ( Moono Shin ) (검색결과 5 건)
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The impact of the nuclear power plant accident in Japan on agricultural and rural engineering
신문호 ( Moono Shin ),( Hiroshi Jinguji ) 한국농공학회 2020 한국농공학회 학술대회초록집 Vol.2020 No.-
The Great East Japan Earthquake that occurred in March 2011, along with the accident at the Tokyo Electric Power Company’s Fukushima Daiichi Nuclear Power Plant, caused about $2.2 billion in damage to approximately 4,300 agricultural land and agricultural facilities, including farmland, levees, drainage pumping stations and waterways in Fukushima Prefecture, Japan. In addition, recovery and decontamination work have been progressing since the accident at the Tokyo Electric Power Company’s Fukushima Daiichi Nuclear Power Plant, and farming has been resumed with the lifting of the evacuation order except for the difficult-to-return zone. In this study, we report on the measures and results taken after the earthquake, such as decontamination of farmland, measures to inhibit absorption through potassium fertilization, and elucidation of the dynamics of radioactive cesium in agricultural land. It was revealed that the areas to the evacuation instructions were lifted, the impact on brown rice from radioactive cesium in the irrigation water was limited, if soil improvement was conducted to increase the content of exchangeable potassium to 200 (mgㆍK)/kg soil before the conventional application. It is also necessary to deepen farmers' and consumers' understanding of the safety of agricultural products from Fukushima Prefecture, Japan, and an important issue is how to provide public support for farmers to put this into practice themselves.
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신문호 ( Moono Shin ),( Minami Nakagawa ),( Akari Sato ) 한국농공학회 2022 한국농공학회 학술대회초록집 Vol.2022 No.-
The basis of Japan’s irrigation management system is a representative, multilayered organization based on local communities, or hamlets (mura) like those of the Edo period, in which farmers can participate in the voting process for land improvement districts. This system allows farmers to mutually coordinate regional conflicts over irrigation, and is a social technology and system that enables the realization of national goals. In recent years, farming patterns have become larger and more corporate, and there is a need to reconstruct an efficient irrigation management system in response to changes in the water management entities of agricultural water use facilities. In particular, labor-saving irrigation management by a small number of farmers is an important issue that is essential in considering the next generation water management system. In this study, a low-cost remote monitoring system using security cameras was installed in a trunk canal at a small land improvement district in Fukushima Prefecture, Japan, and the possibility that the land improvement district in charge of maintenance and management could operate and manage the system was examined. As a result, while the remote monitoring system was found to be effective in saving labor for waterway management, it was considered necessary to consider the daily activities of land improvement district staff when introducing the system. In addition, the running cost required to deal with and maintain the system in case of breakdowns is an important item, and it is considered necessary to devise ways to reduce communication fees in the future.
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Investigation of Leak Detection Method by Measuring Pressure Transients in Agricultural Pipeline
( Yohei Asada ),신문호 ( Moono Shin ) 한국농공학회 2023 한국농공학회 학술대회초록집 Vol.2023 No.0
Pipelines can deliver water quickly and appropriately to consumers in the amount needed. While they are a growing trend in irrigation water use systems, pipelines are difficult to maintain because they are mostly buried underground. In recent years, the number of sudden accidents (loss of facility function due to causes other than disasters) has been increasing in Japan as the number of aging irrigation water use facilities increases, with agricultural pipeline leakage accidents accounting for 70% of all accidents. It is necessary to detect the presence, and location of leaks quickly and accurately before damage escalates to reduce such sudden accidents. In this study, a leak detection method using pressure transients, which is expected to be a low-cost, low-effort, and highly accurate method, was tested on an agricultural pipeline system to verify the effectiveness of the method. As a result, it was found that the leak location can be estimated with an error of less than 2 to 3% of the total pipe length. It was also shown that it is essential to accumulate periodic pressure transient data with the same change in pressure head during valve closure, and that the scope of application of this method can be expanded and its accuracy improved by developing suitable water utilization facilities. This method can be easily incorporated into functional diagnosis in pipeline asset management and is expected to save labor and improve the sophistication of leak location identification.
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Distribution of Overwintering Pondloaches (Misgurnus Anguillicaudatus) in Rice fields in Japan
( Hiroshi Jinguji ),( Katsuya Miyai ),신문호 ( Moono Shin ) 한국농공학회 2020 한국농공학회 학술대회초록집 Vol.2020 No.-
The Pond loach, Misgurnus anguillicaudatus (Cantor, 1842), is widespread in rivers, ponds, swamps and rice fields in Korea and Japan. Although M. anguillicaudatus is a common fresh water fish, it is classified as near threatened in the Red Data list published by the Ministry of Environment, Japan. Korea and Japan have a culture of consuming loaches and the decrease in loach populations may cause the loss of traditional food culture. This study examined the optimal environmental conditions for overwintering loaches in rice fields. The study site was located in Osaki-machi in Miyagi Prefecture, Japan. We randomly collected paddy surface soil (30 cm depth) from 20 rice fields, and M. anguillicaudatus specimen s f rom a p it i n a dry d rain age canal. Misgurnus anguillicaudatus specimens were kept individually in beakers, and body mass and standard length were measured. A total of 19 M. anguillicaudatus specimens were collected from seven rice fields and 31 specimens were collected from the drainage canal. The M. anguillicaudatus that were overwintering in the soil were concentrated in shallow water near the water inlets or outlets of the rice fields. The mean standard length of all M. anguillicaudatus collected in the rice fields and in the pit in the drainage canal was 56.5±11.7mm and 49.9±10.5mm, respectively. There was no significant difference in the body length of the two groups. Our findings suggest that M. anguillicaudatus overwinters in wet and poorly drained rice fields.
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