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Volume 36 (2005 - 200･･･
- Issue 4 Pages 187-
- Issue 3 Pages 137-
- Issue 2 Pages 87-
- Issue 1 Pages 1-
Volume 36, Issue 4
Displaying 1-4 of 4 articles from this issue
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Yoshiharu KOZAI, Takaaki MAEKAWA2006 Volume 36 Issue 4 Pages 187-194
Published: March 25, 2006
Released on J-STAGE: September 05, 2011
JOURNAL FREE ACCESSProduct temperatures of fruits and vegetables have been time-continuously measured during the whole distribution period from the crop field to Xinfadi wholesale market, the largest one in Beijing, to investigate the problems on temperature control for fruits and vegetables in China. Based on the obtained temperature data, the distribution process from the crop field to the wholesale market was classified into four stages that is (1) pre-collection, (2) collection, (3) transportation and (4) inside the market. In particular, product temperatures changed drastically during the collection stage. The rise in product temperature during the transportation period could be avoided by stakeholders' acquisition of technical knowledge. It was obvious that the changes of product temperature vary between packing types by applying temperature profile for calculation of respiration rate to compare the quality decline of fruits and vegetable. The results indicated that the temperature profiles of the products during distribution would be practical as quantitative parameters to investigate the feasibility of fresh-keeping technologies. Furthermore, it was considered that in the first place stakeholders should acquire the knowledge of temperature control to avoid the quality decline during each stage in the distribution process.View full abstractDownload PDF (3514K) -
By activity-based costing methodsHirofumi KAWANISHI, Gab-Soo DO2006 Volume 36 Issue 4 Pages 195-207
Published: March 25, 2006
Released on J-STAGE: September 05, 2011
JOURNAL FREE ACCESSAnnual labor costs, cost for repayment, costs of expendable supplies, expenses of lighting and fuel and taxi in packing house for white stemmed onion were investigated and evaluated by Activity-Based Costing methods, and examined countermeasure against reducing overhead for annual running. Obtained results are following.
1. The costs for repayment of equipment were biggest in annual running costs of packing house, they were about 45%. In operation costs, the operation costs for receipt and for packing that occupied 44-60% in annual operation cost. And the labor costs and the repayment costs of equipment were main expense in receiving operation, the labor costs and the costs of expendable supplies were main expense in packing operation.
2. If the used machine for root cut and for peeling off skin of white stemmed onion operated very well, the annual running costs in packing house maybe lowered 3, 128, 000-7, 267, 000yen in 3 packing houses.
3. The unit handling cost per pack (=annual running costs/annual handling volume) in 3 packing house were 617-1, 206yen, but farmers paid only 155-273yen per pack. So it was showed the farmers use packing house on the cheap.
4. The labor cost per pack in month that handling volume be low were higher than another month in all packing house. The handling volume every month should be steady and the number and arrangement of operators should be reexamined when handling volume were low.View full abstractDownload PDF (6995K) -
The detection of blood spots in brown-shelled eggs using visible spectroscopyYoshihiko USUI, Kazuhiro NAKANO, Mana SAITOU2006 Volume 36 Issue 4 Pages 209-214
Published: March 25, 2006
Released on J-STAGE: September 05, 2011
JOURNAL FREE ACCESSThis paper describes a method of detecting blood spots in brown-shelled eggs using a spectroscopic analysis. The acquired absorbance mode was employed within the visible spectra of eggs to measure spectral data as the explanatory variable. The discriminant analysis based on the Mahalanobis distances was performed. The discriminant function was made by using 120 samples as the calibration set. Then the prediction, whether it was a normal egg or blood-spot one, was practiced by also using 120 samples as the prediction set. As a result, the discrimination ratio for normal eggs was ascertained to be 98.3% whereas that for blood-spotted ones was 93.3%. Moreover, it was clarified that the discrimination ratio for eggs with blood spots in GP center was only 47.8%. The results suggest that the discriminant analysis used in this paper is an effective method for nondestructive detection of brown-shelled eggs that have blood spots.View full abstractDownload PDF (675K) -
Hiroyuki USUDA, Takeo SHIINA, Yutaka ISHIKAWA, Takaaki SATAKE2006 Volume 36 Issue 4 Pages 215-222
Published: March 25, 2006
Released on J-STAGE: September 05, 2011
JOURNAL FREE ACCESSThe effects of suspension type, platform position of the truck and running speed on the vibration were analyzed to develop a three dimensional simulated transport method for optimum package design. Power spectrum density (PSD) data were obtained for the vibration data collected through transport test on the expressway by using truck with the loading capacity of 10tons. Generally, acceleration level at rear platform were higher than at front. There was a highest peak at around 3Hz (0.98 to 4.88Hz) for the vertical vibration of leaf suspension equipped truck. Sixty percent of this peak was reduced by changing the suspension type from leaf suspension to air suspension, whereas no reduction or slight increase was found for the vibration acceleration of horizontal vibration (right and left, front and back). There were differences among the PSD data on a frequency band (20 to 30Hz or more) of vertical vibration taken from different running speed and the suspension type. However, it seems to have a little effect on the product damage because the vibration acceleration level was very low.View full abstractDownload PDF (2656K)
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