All issues
Volume 68 (2006)
- Issue 6 Pages 1-
- Issue 5 Pages 1-
- Issue 4 Pages 1-
- Issue 3 Pages 1-
- Issue 2 Pages 1-
- Issue 1 Pages 1-
Volume 68, Issue 5
Displaying 1-16 of 16 articles from this issue
- |<
- <
- 1
- >
- >|
-
J. MATSUDA2006 Volume 68 Issue 5 Pages 1-2
Published: September 01, 2006
Released on J-STAGE: November 19, 2010
JOURNAL FREE ACCESSDownload PDF (2863K) -
Toshio AOYAMA2006 Volume 68 Issue 5 Pages 4-8
Published: September 01, 2006
Released on J-STAGE: November 19, 2010
JOURNAL FREE ACCESSDownload PDF (3193K) -
Riichiro IIZAWA2006 Volume 68 Issue 5 Pages 9-12
Published: September 01, 2006
Released on J-STAGE: November 19, 2010
JOURNAL FREE ACCESSDownload PDF (3046K) -
Keiichi INOUE2006 Volume 68 Issue 5 Pages 13-18
Published: September 01, 2006
Released on J-STAGE: November 19, 2010
JOURNAL FREE ACCESSDownload PDF (11534K) -
Hiroshi MOMONO2006 Volume 68 Issue 5 Pages 19-23
Published: September 01, 2006
Released on J-STAGE: November 19, 2010
JOURNAL FREE ACCESSDownload PDF (2702K) -
Y. NAKAYAMA2006 Volume 68 Issue 5 Pages 24-25
Published: September 01, 2006
Released on J-STAGE: November 19, 2010
JOURNAL FREE ACCESSDownload PDF (4899K) -
Y. OHSHITA2006 Volume 68 Issue 5 Pages 26-27
Published: September 01, 2006
Released on J-STAGE: November 19, 2010
JOURNAL FREE ACCESSDownload PDF (2640K) -
Analysis Using Regional Condition in Tochigi PrefectureNaoki IKEGAWA, Kazunori IWABUCHI, Fumihito MIYATAKE, Hitoshi SEKIMOTO, ...2006 Volume 68 Issue 5 Pages 41-51
Published: September 01, 2006
Released on J-STAGE: November 19, 2010
JOURNAL FREE ACCESSThis paper describes the feasibility of fuel biomass ethanol production in a double cropping system. Rice and wheat/barley production using double cropping system is a traditional, sustainable and environmentally sound cultivation technique in Japan. The double cropping system also has a merit of higher land productivity compared to single crop system, resulting to higher and sustainable energy crop production of biomass ethanol. Cultivation system to increase biomass ethanol production was determined using Developmental Index (DVI) for crop variety, planting system and cultivation period in Tochigi prefecture, Japan. Inventory analysis of energy input was conducted for cultivation, industrial ethanol plant and material transportation while net energy production was calculated based on energy input and output of biomass ethanol. In a double cropping system, net energy production of 21.7GJ per 10 ares and 18.8GJ per 10 ares were obtained in the southern and northern Tochigi, respectively. Results showed that fuel biomass ethanol in a double cropping system are enough to be feasible due to large amount of net energy production. However further cost reduction is required for ethanol production because the calculated ethanol production cost is about 145yen/L and the calorific value of ethanol is only about 60 percent of fossil fuel.View full abstractDownload PDF (1770K) -
Frequency Resolution of Time Series by Wavelet AnalysisTakashi FUKUSHIMA, Eiji INOUE, Muneshi MITSUOKA, Masami MATSUI, Takash ...2006 Volume 68 Issue 5 Pages 52-58
Published: September 01, 2006
Released on J-STAGE: November 19, 2010
JOURNAL FREE ACCESSIt is necessary to develop a design theory of the knife driving system of combine harvesters in order to derive the control parameters of the balance weights used for vibration reduction. This is necessary for proposing scientific design principles in order to minimize vibration and decrease cost. However, in a knife driving system, nonlinear vibration occurs due to the locations of the balance weights, and this has hampered the development of the design theory. Therefore, this research aims to understand the vibration characteristics of the knife driving system and use the feedback for the design theory. In this report, the frequency resolution of the accelerations was measured in a time series, and the vibration characteristics of each frequency component were examined.View full abstractDownload PDF (3259K) -
Recurrence Plots and Trajectory Considering Frequency ComponentsTakashi FUKUSHIMA, Eiji INOUE, Muneshi MITSUOKA, Masami MATSUI, Takash ...2006 Volume 68 Issue 5 Pages 59-64
Published: September 01, 2006
Released on J-STAGE: November 19, 2010
JOURNAL FREE ACCESSIn the previous study, frequency components were determined by a discrete wavelet transform; these components were compared with the measurement time series based on the vibration characteristics. In this study, the correlation of each frequency component was examined by recurrence plots, since the fundamental vibration of a knife driving system was produced by the superposition of specific frequency components. When the balance weight was at 225° location, a clear periodicity was not observed by time series and phase plane, as seen in the previous study; therefore, a regularity of the system was recognized. Furthermore, we proposed a trajectory constructed by the coordinates based on each frequency component in order to examine the vibration characteristics in detail. In addition, the part where the nonlinear vibration occurred was observed.View full abstractDownload PDF (6855K) -
A Dynamic Model of the Knife Driving SystemTakashi FUKUSHIMA, Eiji INOUE, Muneshi MITSUOKA, Masami MATSUI, Takash ...2006 Volume 68 Issue 5 Pages 65-70
Published: September 01, 2006
Released on J-STAGE: November 19, 2010
JOURNAL FREE ACCESSOur previous study suggested that a vibration, which was three times the driving frequency, occurred at the joint of the link arm end and the drive knife. In this paper, we constructed a dynamic model of the knife driving system. By considering the elastic deformation of the bearing, the dynamic interaction at the joint was given by the Voigt Model. This model simulated the horizontal inertia force by numerical calculations. The results revealed that the tendencies qualitatively corresponded well with the time series of the simulated inertia force and measured acceleration in the state without the balance weight. The model enabled the forecasting of vibration characteristics of the knife driving system.View full abstractDownload PDF (719K) -
Takashi FUKUSHIMA, Jun OKADA, Eiji INOUE, Muneshi MITSUOKA, Shigeki IN ...2006 Volume 68 Issue 5 Pages 71-77
Published: September 01, 2006
Released on J-STAGE: November 19, 2010
JOURNAL FREE ACCESSThis study aims to construct a dynamic model of a half-tracked tractor that enables the expression of the vibration characteristics on the road, in order to propose the scientific design principles for minimizing vibration. The acceleration of a tractor driven on the road was measured, and the validity of the model was verified by comparing the measurement with the simulation. In this model, rolling resistance, which was a factor of the internal resistance of a rubber crawler system, was considered to quantitatively improve the simulation. The result suggested the possibility of expressing the acceleration in the center of gravity of the machine driven on the road surface by using this model. However, issues regarding the pitch acceleration of the oscillating rubber crawler mechanism existed.View full abstractDownload PDF (968K) -
Motokatsu SUZUKI, Eiichiro SAKAGUCHI, Shotaro KAWAKAMI, Takeshi FUKUMO ...2006 Volume 68 Issue 5 Pages 78-83
Published: September 01, 2006
Released on J-STAGE: November 19, 2010
JOURNAL FREE ACCESSThe effect of resistance plates in an abrasive type rice-milling chamber on milling conditions was investigated using a two-dimensional discrete element simulation for the initial milling process. The decrease in brown rice mass was measured and rice particle movement was observed during milling in a horizontal-type test milling machine under two conditions; one in which the milling chamber was fitted with resistance plates and another in which the plates were absent. The model accurately reproduced the experimental results. Simulated information on the micro-mechanical behavior of rice particles revealed that the localized accumulation of particles in the area immediately anterior to each resistance plate resulted in an increase in both the contact number and shear force between individual particles and the abrasive roll, as well as greater abrasive action upon individual particles compared to when the plates were absent.View full abstractDownload PDF (3610K) -
Establishment of Sensory Evaluation MethodQINGYUN Lu, ZAIGUI Li, Takashi MIKAMI, Motonobu KAWANO2006 Volume 68 Issue 5 Pages 84-88
Published: September 01, 2006
Released on J-STAGE: November 19, 2010
JOURNAL FREE ACCESSNinety varieties of Indica rice harvested in China were cooked and sensually evaluated using “four-samples testing method” which was widely used in Japan. The results showed that this sensory evaluation method was proved to be applicable for Chinese Indica rice varieties.
The multiple regression equation calculated with the sensory evaluation data from 60 rice varieties expressed the high correlation (R=0.98) between variables of appearance, aroma, taste, stickiness and “overall flavor value” of cooked rice. The equation was confirmed by comparing with the predicted values (R=0.98) calculated with the sensory evaluation data from another 30 rice varieties. No significant correlation was determined between brightness, hardness and “overall flavor value” of cooked rice.View full abstractDownload PDF (678K) -
Measurement of the Taste by Visible and Near Infrared RaysQINGYUN Lu, ZAIGUI Li, Takashi MIKAMI, Motonobu KAWANO2006 Volume 68 Issue 5 Pages 89-93
Published: September 01, 2006
Released on J-STAGE: November 19, 2010
JOURNAL FREE ACCESSAbsorbance values of visible and near infrared rays on 90 cooked rice samples of Chinese Indica rice varieties were measured by Taste Analyzer, using 4 kinds of fixed filters. At the same time the cooked rice samples were sensually evaluated about appearance, aroma, taste, stickiness and overall flavor values. Multiple regressions of the 60 samples were calculated where sensory evaluation results as the dependent variables, and absorption values as the independent variables. Results showed that the predicted values from the calibration equation of the overall flavor were highly correlated (R=0.84) with other 30 rice values by the sensory evaluation.
The sensory evaluation tests were performed at 8 places of 4 cities (Guangzhou, Changsha, Hangzhou, Harbin) in China and compared with the predicted values from the calibration equation. Research will be more necessary from now on.View full abstractDownload PDF (766K) -
Tomohiro TAKIGAWA, Tofael AHAMED, Qiang ZHANG, Payungsak JYUNYUSEN, Ma ...2006 Volume 68 Issue 5 Pages 94-97
Published: September 01, 2006
Released on J-STAGE: November 19, 2010
JOURNAL FREE ACCESSDownload PDF (2302K)
- |<
- <
- 1
- >
- >|