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Fukasawa M.,Japan National Agriculture and Food Research Organization | Kawahata M.,Aomori Prefectural Industrial Technology Research Center | Higashiyama Y.,Japan National Agriculture and Food Research Organization | Komatsu T.,Japan National Agriculture and Food Research Organization
Animal Science Journal | Year: 2016

The aim of this study is to identify the factors that comprise farmer attitudes toward dairy cows and jobs in Japan, and examine the relationship between these attitudes and dairy productivity. At first, we executed a questionnaire survey to determine factors that comprise attitudes of farmers toward their jobs and dairy cows, and three factors were extracted. These were named as 'Positive beliefs to cows', 'Negative beliefs to cows' and 'Job satisfaction', respectively. Second, we examined the relationships between attitude and dairy productivity in 35 dairy farms. The positive beliefs scores correlated positively both with milk yield and milk urea nitrogen concentration. We found there to be three farm groups by cluster analysis using three attitude score. The group B farms showed significantly higher positive beliefs scores and job satisfaction scores; on the other hand, the group C farms showed significantly lower positive beliefs scores and higher negative belief scores. The milk yield in group B was significantly higher than that in group C. This study showed that Japanese farmers' attitudes toward cows considerably resemble those seen in previous studies in Western cultures. Positive attitudes toward cows could enhance stockmanship, and could improving animal welfare and productivity. © 2016 Japanese Society of Animal Science. Source

Abe T.,Hirosaki University | Ichikawa M.,Hirosaki University | Hikage T.,Hirosaki University | Kakuta S.,Aomori Prefectural Industrial Technology Research Center | Nagai K.,Tokyo Institute of Technology
Chemical Physics Letters | Year: 2012

A composite of p-type poly(3-hexylthiophene-2,5-diyl) (P3HT) and n-type phenyl-C 61-butyric-acid-methyl ester (PCBM) was prepared and first applied to a photoelectrode in the water phase. The composite formed on a base electrode exhibited only photoanodic characteristics in the presence of an electron donor. Based on a microscopic image, the p/n composite formed at the substrate side and most of the P3HT maldistributed near the surface were responsible for the specified charge transfer. Supporting this morphology, the photoanodic characteristics were further enhanced by the combination of p-type zinc phthalocyanine (oxidation catalyst working in the dark) with the composite surface. © 2012 Elsevier B.V. All rights reserved. Source

Akahira A.,Aomori Prefectural Industrial Technology Research Center
Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B | Year: 2010

A study has been made to clarify the performance of road heating system using waste heat of fuel cell. It is important for fuel cell system to improve the general efficiency, therefore, the study suggests that the exhaust heat from polymer electrolyte fuel cell (PEFC) in utilized by a road heating system and develops the novel heat utilization system. In a road heating system, required temperature of hot water is between 10°C and 30°C ; exhaust heat of PEFC can be used as heat source because the exhaust heat temperature is more than 60°C. Experiments on a prototype system were conducted to investigate the system performance. The results show that the total efficiency of proposed road heating system is higher than that of conventional system by 7% ; the proposed system is effective in snowy cold region. Source

Morinaga Y.,Aomori University of Health and Welfare | Iwai K.,Aomori University of Health and Welfare | Tomita H.,Shimokita Food Research Institute | Takaya Y.,Meijo University | And 2 more authors.
Food Science and Technology Research | Year: 2010

A high-concentration (20%) antihypertensive peptide solution with angiotensin I-converting enzyme (ACE) inhibitory activity was prepared from the powder of the jellyfish Stomolophus nomurai, a plague of which had recently hit Japan's fishing industry, using the drum dryer method. Three active fractions, Fr. 3-1, Fr. 3-3, and Fr. 3-6, were isolated from the peptide mixture by step-wise elution by Sep-Pak Vac C 18 and further fractionated by high-performance liquid chromatography twice. The sequences of Fr. 3-1, Fr. 3-3, and Fr. 3-6 were determined as IGDEPLANYL, FGGIDDINQIGQSD, and YYAPFE, respectively. The most active peptide was identified with the synthetic peptide YYAPFE by sequence analysis, MALDITOF MS, and NMR spectra. Further, YYAPFQ, designed and synthesized on the basis of YYAPFE, showed the highest ACE inhibitory activity in vitro among YYAPFE, YYAPF, YYAP, YYA, and YY; however, its effect on systolic blood pressure showed a similar tendency to that of YYAPFE in spontaneously hypertensive rats. Source

Alabia I.D.,Hokkaido University | Saitoh S.-I.,Hokkaido University | Hirawake T.,Hokkaido University | Igarashi H.,Japan Agency for Marine - Earth Science and Technology | And 5 more authors.
Hydrobiologia | Year: 2016

The effects of the El Niño Southern Oscillation (ENSO)-mediated environmental changes to marine resources were long recognized; however, species-specific responses were also reported to vary, possibly more so, under the emerging event-to-event diversity of the ENSO conditions. Hence, the objective of this study is to characterize the potential impacts of the ENSO-regulated environmental variability to squid habitat in the central North Pacific under the different ENSO flavors, using habitat models developed from at least a decade of fishery-dependent dataset and environmental parameters. Our findings revealed that the potential squid habitats were largely influenced by ENSO-forced environmental changes during the squid’s spawning and nursery periods, resulting in substantial reduction/enhancement of available habitats in the succeeding summers of Central Pacific El Niño/La Niña, where the latter led to an expansion of favorable spawning and nursery grounds. However, the autumn–winter periods of weaker and short-lived Eastern Pacific El Niño showed elevated potential habitats due to minimal sea surface temperature drop and close proximity of spawning and nursery grounds to optimal feeding environments. The quick, albeit variable, squids’ responses to ENSO flavors accentuate their promising potential as ecological beacons under climate changes, aiding the development of adaptive management strategies for commercially exploited fisheries. © 2016 Springer International Publishing Switzerland Source

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