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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 3
Displaying 1-4 of 4 articles from this issue
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Portable type internal quality evaluation device for pineapplesSadao OMORI, Akira HIRATA, Youichi NAKAMOTO, Hironoshin TAKAO2005 Volume 36 Issue 3 Pages 137-144
Published: December 25, 2005
Released on J-STAGE: September 05, 2011
JOURNAL FREE ACCESSTo judge the degree of ripeness and the internal diseases of a pineapple, we developed a portable type internal quality evaluation device after a few basic experiments. It is based on the use of the amount of transmitted light originally from the sunlight. This method, however, had to make corrections on the transmitted light by the surrounding light since the irradiated sunlight is not constant. Furthermore, the light condition inside and outside the greenhouse is not identical, there had to be two types of indexes, one for the measurement inside the greenhouse and one for the outside to obtain ripeness and internal diseases from the corrected transmitted light. The new portable device consists of two parts; handheld measurement part of 600g which catches the transmitted light and surrounding light, and control part of 900g which valuates the ripeness and the internal diseases, both are small and light enough to carry around. The accuracy of ripeness evaluation was 80% as an appropriate evaluation. The evaluation of diseased fruit was possible by a single measurement for heavily damaged fruits but plural measurements was needed for medium damaged fruits. The trouble of not being able to detect the over-ripen fruits with light damages was also reported.View full abstractDownload PDF (6995K) -
Property of coconut shell as the deodorizing materialYasuhiro HARADA, Naoaki DOSHU, Takashi FURUYAMA2005 Volume 36 Issue 3 Pages 145-152
Published: December 25, 2005
Released on J-STAGE: September 05, 2011
JOURNAL FREE ACCESSThe objective of this study is to develop a space-saving biological deodorizing system at lower cost than existing systems. We employed chips of coconut shell as the deodorizing material and experimented with the deodorization of ammonia gases. The ammonia concentration was 20ppm, and the linear velocity of ammonia gas through the deodorizing materials was 100mm/s. This deodorizing process removed 80% of the ammonia. This process was able to decompose 68.0g/day of nitrogen per cubic meter of ammonia material by biological nitrification and denitrification. However, the decomposition efficacy varied during the experiment period, possibly due to reductions in temperature of deodorizing materials and increases in quantity of water discharged from the deodorization tank.View full abstractDownload PDF (962K) -
Satoshi MINAKUCHI, Hisashi WATANABE, Tetsuro KAWASAKI2005 Volume 36 Issue 3 Pages 153-159
Published: December 25, 2005
Released on J-STAGE: September 05, 2011
JOURNAL FREE ACCESSTo investigate effects of bud stage and temperature in Bud Anthesis Acceleration (BAA) on the number of days to shipping and qualities of carnations, the carnations (Dianthus caryophyllus L., cv. Nora) were cut at three stages, stage 1, bud diameter of 15mm; stage 3, tip of calyx had opened and the color of petals had not turned pink; stage 5, petals began to emerge from calyx, and treated with BAA solution at 20, 25 or 30°C.
In the BAA, cutting at younger stage and the treatment at higher temperature reduced the number of days to shipping more effectively. Flower diameter of carnations opened by the BAA at 20°C was small, and the vase life was short. Vase life of carnation opened by the BAA at 25°C was short. Petal color of carnations opened by the BAA at 30°C was faded pink.
Although all of carnations cut at 10mm or 15mm of bud diameter were fully opened by the BAA at 25°C, carnations cut at 5mm of bud diameter were not. Cutting at 10mm of bud diameter narrowed the flower diameter, and shortened the vase life of carnations opened by the BAA at 25°C.View full abstractDownload PDF (4253K) -
Osamu SAKATA, Takaaki SATAKE, Jun SAMATA, Yutaka KITAMURA2005 Volume 36 Issue 3 Pages 161-168
Published: December 25, 2005
Released on J-STAGE: September 05, 2011
JOURNAL FREE ACCESSTo assist agricultural facilities construction, we have developed a basic optimum layout design simulator based on Simulated Annealing (SA), a stochastic searching algorithm, and have carried out several layout designs using it. Using the first version of the simulator, only layout designs that were planimetrically defined were executable. In this study, we have eliminated this defect and adapted the simulator to three-dimensional optimum layout design. In this paper, we report a simulation carried out using the new simulator.
In general, a specified problem is input into the simulator. Then, optimum solutions are configured such that they: 1) eliminate overlaps among objects, 2) make desired connections among objects, and 3) set objects under roofs.
Using the simulator, we designed an optimum layout of agricultural machineries for a rice center along the lines of the process flow: i. e., from receiving the harvest and weighing it on a scale to drying, grinding and packing. In this simulation, a new cost function was configured as an enhanced version of the old cost function. The new cost function adds puts vertical bounds, or height limits.
As a result, an optimum layout design for agricultural machineries was obtained that was exactly the same as a layout design made by a skilled design engineer. This result made it clear that our simulator is fully applicable to 3-dimensional reality-based layout design problems.View full abstractDownload PDF (7183K)
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