http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Investigation Into the Design of the Dual Temperature Reefer Container using CFD
( Fumina Tanaka ),( Madoka Sekiya ),( Fumihiko Tanaka ) 한국농업기계학회 2018 한국농업기계학회 학술발표논문집 Vol.23 No.1
In the transport of fruit and vegetables by ship, it is necessary to maintain freshness for a long period compared to air freight. Since the optimal storage temperature varies depending on the item, it is preferable to provide several temperature zones in one container. The objective of this study was to develop a dual temperature reefer container which temperature was set at 0°C and 10°C, and the optimum air conditioning design was investigated by using CFD (Computational Fluid Dynamics) to analyze thermal fluid. As a result, it was clarified that two rooms were adjusted to 0°C and 10°C in summer condition and winter condition. For opening direction of the return port, in consideration of the occurrence of condensation on the load, the upper opening was preferable. In addition, it was shown that it was necessary to improve such as extending the outlet of the duct to avoid a low temperature injury.
Adolescent Scoliosis Screening in Nara City Schools: A 23-Year Retrospective Cross-Sectional Study
Satoshi Yamamoto,Hideki Shigematsu,Fumihiko Kadono,Yukihiro Tanaka,Masataka Tatematsu,Akinori Okuda,Eiichiro Iwata,Munehisa Koizumi,Yasuhito Tanaka 대한척추외과학회 2015 Asian Spine Journal Vol.9 No.3
Study Design: Retrospective cross-sectional study. Purpose: To determine the prevalence of idiopathic scoliosis, define the distribution of the curve magnitude, evaluate the accuracy of Moiré topography as a screening tool, and investigate the cost-effectiveness of our screening system. Overview of Literature: Early detection of idiopathic scoliosis provides the opportunity for conservative treatment before the deformity is noticeable. We believe that scoliosis screening in schools is useful for detection; however, screening programs are controversial owing to over referral of students who do not require further testing or follow-up. In Japan, school scoliosis screening programs are mandated by law with individual policies determined by local educational committees. We selected Moiré topography as the scoliosis screening tool for schools in Nara City. Methods: We selected Moiré topography as the scoliosis screening tool for schools in Nara City. We screened boys and girls aged 11–14 years and reviewed the school scoliosis screening results from 1990 to 2012. Results: A total of 195,149 children aged 11–14 years were screened. The prevalence of scoliosis (defined as ≥10° curvature) was 0.057%, 0.010%, and 0.059% in fifth, sixth, and seventh grade boys and 0.337%, 0.369%, and 0.727% in fifth, sixth, and seventh grade girls, respectively. The false-positive rate of our Moiré topography was 66.7%. The minimum cost incurred for scoliosis detection in one student was 2,000 USD. Conclusions: The overall prevalence of scoliosis was low in the students of Nara City schools. Over 23 years, the prevalence of scoliosis in girls increased compared to that in the first decade of the study.
Muhammad Ashraf Javid,Toshiyuki Okamura,Fumihiko Nakamura,Shinji Tanaka,Rui Wang 대한토목학회 2016 KSCE JOURNAL OF CIVIL ENGINEERING Vol.20 No.1
This paper aims to identify the relationships between people’s attitudes on service quality attributes of private car and public transport, and intentions to use public transport under situational constraints, mobility restrictions on car use, public transport incentives and moral obligation. A questionnaire survey was conducted in Lahore and 354 usable samples obtained. Results revealed that people’s intentions to use public transport vary under different situations and mobility restrictions. The fiscal restrictions and policy of car entry restriction have significant influence on changing people’s intentions. Modeling results revealed that social/ aesthetic, personal and instrumental attitudinal aspects of private car and public transport are underlying factors in determining the people’s intentions towards public transport under stated conditions. It is argued that social/aesthetic and personal dimensions of public transport should have equal importance in making improvements along with instrumental dimensions. This study implicates that improvement in service quality of public transport need to integrate with mobility restrictions on car use for effective change of travel behavior. The findings of this study would be helpful for concerned authorities in considering the appropriate attributes of public transport for improvement, and other related policy measures to make significant promotion from car to public transport.
Effect of 1-MCP and Temperature on the Quality of Broccoli
( Nguyen Thi Hang Phuong ),( Toshitaka Uchino ),( Fumihiko Tanaka ) 한국농업기계학회 2018 한국농업기계학회 학술발표논문집 Vol.23 No.1
Broccoli (Brassica oleracea L.) is a highly perishable product and its postharvest life and quality greatly depend on storage conditions, such as temperature, atmospheric composition, relative humidity and ethylene. The effect of 1-methylcyclopropene (1-MCP) and temperature on quality of broccoli was investigated in the present study. Broccoli was treated with air (control) and 1.0 μL/L 1-MCP for 15 h at 15°C, and were then stored at 10°C and 0°C for 25 days and 50 days, respectively. The results indicated that 1-MCP treated samples were in good quality during 50 days of storage at 0°C or 20 days of storage at 10°C compared to control. The present study showed that 1-MCP treatments extended shelf life, reduced postharvest deterioration, retarded chlorophyll degradation, respiration rate and inhibited the increase of color changes and ethylene production in broccoli. Treatments of 1-MCP reduced the rate of decrease of ascorbic acid in broccoli when comparing to those in the control. Broccoli treated with 1.0 μL/L 1-MCP and stored at 0°C showed the significantly higher in quality compared to that of other treatments. These results indicated that 1-MCP was effective in preserving the overall quality of broccoli and could be a suitable candidate for extending shelf life, maintaining visual quality and reducing loss of quality in broccoli stored at 0°C.
Efficacy of 1-MCP on the Internal Structure of Japanese Persimmon
( Poly Karmoker ),( Wako Obatake ),( Fumina Tanaka ),( Fumihiko Tanaka ) 한국농업기계학회 2018 한국농업기계학회 학술발표논문집 Vol.23 No.1
The efficacy of 1-MCP on the structural properties of Japanese persimmon was investigated at 0°C and 25°C for 8 and 4 weeks, respectively. X-ray computed tomography was employed to quantify the structural properties. The physicochemical properties such as moisture, apparent density, bio-yield stress, TSS and external color were measured destructively. 1-MCP satisfactorily delayed postharvest ripening in terms of bio-yield stress, L<sup>*</sup> and hue angle value at both temperatures. The average CT value, standard deviation, and high density part progressed over the storage period at both temperatures. The degree of increment of those properties of the 1-MCP treated fruit was much lower compared to other treated fruit. Peak height of the control and 1-MCP treated fruit was nearly constant, whereas it increased in the ethylene and 1-MCP+ethylene treated fruit. The histogram profile also shifted to a high-density region slightly in the 1-MCP treated fruit. Whereas the histogram profile of the ethylene treated fruit was shifted most toward the high-density region with an increment of peak height. The changes in porosity and thermal conductivity in the 1-MCP treated fruit were smaller than those in the control, ethylene and 1-MCP+ethylene treated fruit. The changes in porosity and thermal conductivity of the ethylene treated fruit were significantly higher than those of all treated fruit at the end of storage period. The physicochemical properties were strongly correlated with the average CT value and standard deviation at both temperatures. The L<sup>*</sup> value, hue angle, moisture content and bio-yield stress were negatively correlated with the average CT value and standard deviation, whereas the apparent density and TSS content were positively correlated. Thus X-ray CT images could be used to quantify the structural properties of persimmon fruit. The porosity and thermal conductivity distribution could be measured by using an X-ray CT device without destruction over the storage period. 1-MCP could suppress the changes in the internal structure of Japanese persimmon at 0°C and 25°C for 8 and 4 weeks, respectively.
SMALL-SCALE STRUCTURE OF THE ZODIACAL DUST CLOUD OBSERVED IN FAR-INFRARED WITH AKARI
TAKAFUMI OOTSUBO,YASUO DOI,SATOSHI TAKITA,SHUJI MATSUURA,MITSUNOBU KAWADA,TAKAO NAKAGAWA,KO AROMATSU,MASAHIRO TANAKA,TORU KONDO,DAISUKE ISHIHARA,Fumihiko Usui,MAKOTO HATTORI 한국천문학회 2017 天文學論叢 Vol.32 No.1
The zodiacal light emission is the thermal emission from the interplanetary dust and the dominant diffuse radiation in the mid- to far-infrared wavelength region. Even in the far-infrared, the contribution of the zodiacal emission is not negligible at the region near the ecliptic plane. The AKARI far-infrared all-sky survey covered 97\% of the whole sky in four photometric bands with band central wavelengths of 65, 90, 140, and 160~$\mu$m. AKARI detected the small-scale structure of the zodiacal dust cloud, such as the asteroidal dust bands and the circumsolar ring, in far-infrared wavelength region. Although the most part of the zodiacal light structure in the AKARI far-infrared all-sky image can be well reproduced with the DIRBE zodiacal light model, there are discrepancies in the small-scale structures. In particular, the intensity and the ecliptic latitude of the peak position of the asteroidal dust bands cannot be reproduced precisely with the DIRBE models. The AKARI observational data during more than one year has advantages over the 10-month DIRBE data in modeling the full-sky zodiacal dust cloud. The resulting small-scale zodiacal light structure template has been used to subtract the zodiacal light from the AKARI all-sky maps.