All issues
Volume 48 (2017)
- Issue 4 Pages 197-
- Issue 3 Pages 123-
- Issue 2 Pages 67-
- Issue 1 Pages 2-
Volume 48, Issue 2
Vol. 48, No. 2 (Ser. No. 153)
Displaying 1-5 of 5 articles from this issue
- |<
- <
- 1
- >
- >|
-
-Composting Treatment and Compost Utilization-Akihiro TANAKA2017 Volume 48 Issue 2 Pages 67-73
Published: 2017
Released on J-STAGE: September 07, 2023
JOURNAL OPEN ACCESSDownload PDF (904K) -
-Composting Facilities Related to Sewage and Manure Treatment-Yoichiro KOJIMA2017 Volume 48 Issue 2 Pages 74-83
Published: 2017
Released on J-STAGE: September 07, 2023
JOURNAL OPEN ACCESSDownload PDF (3638K) -
Misaki MITO, Takuji KAWAGISHI, Koichi MIZUTANI, Keiichi ZEMPO, Naoto W ...2017 Volume 48 Issue 2 Pages 84-91
Published: 2017
Released on J-STAGE: September 07, 2023
JOURNAL OPEN ACCESSIt is a big loss if overlooks swine estrus in breeding work in swine farm. Whether breeding swine are in estrus is a large work load for workers since it is needed to observe carefully many swine based on their experience in breeding work in swine farm. Previous research has shown that whether breeding swine are in estrus can be checked by measuring vulvar surface temperature change using thermography as a quantitative method. However, it was reported that temperature is easy to be changed by infl uence of external environment such as ambient temperature of swine. In this paper, we extract 5 external environment factors; gluteal surface temperature of swine using thermography, the temperature inside and outside swine farm. And we estimate vulvar temperature eliminated the infl uence of their factors. We performed 3 regression analysis by machine learning method, and evaluated the combination their factors and method for estimating. As a result, we could estimate vulvar temperature whose error is less, than 1.4 °C using gluteal temperature in swine, the temperature inside and around swine farm as external environment factors as explanatory variables. And we found this method can estimate temperature change by estrus correctly.View full abstractDownload PDF (1931K) -
Hideki MORIYAMA, Limi OKUSHIMA, Masahisa ISHII, Ryota TSUCHIYA2017 Volume 48 Issue 2 Pages 92-103
Published: 2017
Released on J-STAGE: September 07, 2023
JOURNAL OPEN ACCESSIn April 2016, over a hundred greenhouses and numbers of bench systems in an area around the Kumamoto region were damaged by the Kumamoto Earthquake, which was a crustal earthquake. We surveyed a venlo-type greenhouse, four steel frame greenhouses, two reinforced pipe-framed greenhouses and bench systems inside those greenhouses damaged by the earthquake in Kumamoto prefecture. For the greenhouse structure, a seismic force and a ground fi ssure caused a leaning of columns and an unequal displacement of foundations. For the case of a heavy snow fall in 2014, rafters were bent and the roofs of the greenhouses were collapsed by the snow load which exceeded a design load. In the Kumamoto case, remarkable deformations were exclusively shown around the structure under the eave. There were few deformation around the roof structure above the eave. However, the liquefaction of the ground led to a harmful deformation of the valley gutters and ridge pipes and compelled farmers to cease horticulture. The structure of bench systems without bracing and fi rm connections are weaker and were observed to be more susceptible to damage from the seismic forces than greenhouses structures.View full abstractDownload PDF (6548K) -
Genta KANAI, Yukinori SHIBUYA, Hisashi KOWATA2017 Volume 48 Issue 2 Pages 104-109
Published: 2017
Released on J-STAGE: September 07, 2023
JOURNAL OPEN ACCESSA belt-type soybean-sorter method and a motor vibrated screen method were examined for rapeseed grain purifi cation. Activated clay was examined to improve low-quality rapeseed oil for utilization as diesel fuel. Bulk grain purifi cation methods incorporating a belt-type soybean-sorter were examined to assess effects on oil quality for use in diesel fuel. Based on a rapeseed oil fuel standard, DIN V 51 605, oil from grain classifi ed as low quality was found to have lower fuel quality than oil from high-quality grain in terms of excess sulfur contents, acid values, oxidation stability, phosphorus contents, and calcium and magnesium contents. Low-quality grain contains many more sprouted and damaged grains, which are considered to result from broken skin of the grains and sprouting grains. Application of activated clay was examined to improve the oil fuel quality. Stirring the low-quality oil with activated clay of 10% weight of the oil improved the oil quality, reducing the total metal constituent from 441 ppm to 15 ppm. Grain purifi cation tests demonstrated that a double screen, when vibrated using a motor, has lower capacity and overall separation effi ciency than a double screen vibrated using compressed air. The motor-vibrated screen had more holes plugged by grains and admixtures than the other. The different directions of the vibration and stronger vibration might be useful to reduce screen plugging and to improve the capacity and overall separation effi ciency.View full abstractDownload PDF (1996K)
- |<
- <
- 1
- >
- >|