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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of Biosystems Engineering
Journal Basic Information
Journal DOI :
Korean Society for Agricultural Machinery
Editor in Chief :
Volume & Issues
Volume 34, Issue 6 - Dec 2009
Volume 34, Issue 5 - Oct 2009
Volume 34, Issue 4 - Aug 2009
Volume 34, Issue 3 - Jun 2009
Volume 34, Issue 2 - Apr 2009
Volume 34, Issue 1 - Feb 2009
Selecting the target year
Real Time Prediction of Rating Cone Index using Measured Wheel Sinkage and Slip
Nam, Joo-Suck ; Kim, Dae-Cheol ; Kim, Kyeong-Uk ;
Journal of Biosystems Engineering, volume 34, issue 4, 2009, Pages 205~210
DOI : 10.5307/JBE.2009.34.4.205
It has been known from Willoughby's empirical equation that rating cone index can be determined if wheel sinkage and slip of a vehicle can be measured on soil surface. A field data of wheel sinkage and slip was collected from two tractors of different sizes on gravelly sand and gravelly loamy sand. Using the data, rating cone index of the soil was estimated. The estimated rating cone index demonstrated that it could be determined in real time by measuring wheel sinkage and slip. It was also demonstrated statistically that the same soil strength could be obtained under the same soil conditions regardless of the vehicle platforms used for the wheel sinkage and slip measurements.
Development of Loading Machine of Culture Medium for Oyster Mushroom Production - Investigation of Physical Properties and Element Design of System -
Lee, Kyung-Jin ; Lim, Hak-Kyu ; Kim, Tae-Han ;
Journal of Biosystems Engineering, volume 34, issue 4, 2009, Pages 211~219
DOI : 10.5307/JBE.2009.34.4.211
In the process of oyster mushroom production, loading work of culture medium needs the most intensive labor power and cost. Therefore, the development of culture medium loading machine causes to reduce the manpower and cost. The main objectives of this study are identify cultivating environment, physical properties of culture medium and to make an element design of culture medium loading machine. The results are summarized as follows: 1. The moisture content and density of popularly used culture medium were 70%(w.b),
, respectively. 2. Pressure of the blower increased as the impeller speed increased, and the opening ratio of pressure controller decreased. 3. Recommendable c1earance(
) between an impeller plate and a blower case was 25 mm at an impeller speed of 3183 rpm 4. Discharge device of type B with a hopper and suit was better than type A with a hopper.
Development of Loading Machine of Culture Medium for Oyster Mushroom Production - Performance Test and Economic Analysis of Loading System -
Lee, Kyung-Jin ; Lim, Hak-Kyu ; Kim, Tae-Han ;
Journal of Biosystems Engineering, volume 34, issue 4, 2009, Pages 220~227
DOI : 10.5307/JBE.2009.34.4.220
In the process of oyster mushroom production, loading work of culture medium needs the most intensive labor power. Therefore, development of culture medium machine causes to reduce the manpower and cost. The main objective of this study is to develop the culture medium loading machine and investigate the optimal operation conditions and to evaluate the economic value of the machine. The results are summarized as follows: 1. Optimum transporting velocity of the conveyor was 0.61 m/s 2. Optimum speed of blower was 3183 rpm at the transporting velocity of 0.61 m/s with the loading quantity of 3.41 t/hr 3. Recommendable opening area ratio of pressure controller was 1/2 at the blower speed of 3183 rpm and the transporting velocity of 0.61 m/s 4. The break even point resulted in
of cultivating area compared to the method of with portable workbench, and
of cultivating area compared to the method of with a tractor and a truck.
Development of a Tractor Attached Roughage Cut-feeder for Round Bale(II) - Recent Trend of Traditional Cutting System and Feasibility Study -
Ha, Yu-Shin ; Hong, Dong-Hyuck ; Park, Kyung-Kyoo ;
Journal of Biosystems Engineering, volume 34, issue 4, 2009, Pages 228~233
DOI : 10.5307/JBE.2009.34.4.228
In order to cut the round bale easily, a roughage cut-feeder for the round bale was developed in this study. This study consists of two parts. One is development of a cutting mechanism and a performance test reported in the previous paper. This is the second part of the study. For the study, recent trend of traditional cutting system was analyzed. Also, cost of the prototype cut-feeder was analyzed and determine the break-even point of farm size was determined by comparing with traditional method using a traditional cutter. A prototype cut-feeder was investigated with the fact that working performance, fiber length and shape of roughage and feeding quality was good. Operating cost of the prototype cut-feeder decreased rapidly with an increase of farm size. Break-even point in terms of farm size was 36 heads for beef and 28 heads for dairy. Also, costs estimated were 118,000 won/head year and 148,000 won/head year, respectively.
Study on Process Development of Ginseng's Surface Washing System
Lee, Hyun-Seok ; Kwon, Ki-Hyun ; Jeong, Jin-Woong ; Choi, Chang-Hyun ; Han, Jae-Woong ;
Journal of Biosystems Engineering, volume 34, issue 4, 2009, Pages 234~242
DOI : 10.5307/JBE.2009.34.4.234
This study was attempted to develop surface washing-system of ginseng. The effect of sterilization, washing and keeping freshness of ginseng through analyzing unit process were examined to establish optimal condition for washing system. Surface washing method of fresh ginseng used two way and full cone spray type. Sterilization was used at
water with electrolysis water of 50 and 80 ppm. Ginseng was sterilized with electrolysis water during 30 and 60 s, dehydrated during 1 min and dried during 1min at 30 and
. Hardness of surface-washed ginseng showed good result on 1 min spraying time with 80 ppm electrolysis water at
storage. Ginseng with 80 ppm electrolysis water was sterilized better with
. There are no changes with 0% on appearance quality at 80 ppm electrolysis.
Survey and Economic Analysis of Food Industry Residues for Biomass-to-energy Conversion in Merced and Stanislaus Counties, California, USA
Kim, Dae-Hyun ;
Journal of Biosystems Engineering, volume 34, issue 4, 2009, Pages 243~253
DOI : 10.5307/JBE.2009.34.4.243
This research expands investigations into the biomass resource potential associated with California's food processing industry by surveying industries within a two county region in the San Joaquin Valley, California, USA. A previous survey conducted in 2005 for the Sacramento Municipal Utility District (SMUD) quantified residue and waste generation from food processors and food preparation businesses in the Sacramento region. The present survey investigates residue and waste streams from food processors located in Merced and Stanislaus Counties. Sixty food processors were identified to participate in the survey, of which 49 responded (82%) and data were acquired for 38 (63%) (6 facilities closed or moved, 8 decided not to participate). Within the two counties, total annual waste among survey respondents amounted to 24,044 dry tons of high moisture (
60%) food residuals, 5,358 dry tons of low moisture (<60%) food residuals; and 23.7 million
of wastewater containing 38,814 tons of biochemical oxygen demand (
). The total potential electric power generation from these food residues was estimated at approximately
. Total solid waste resource included in the survey response was estimated at about 10% of statewide residue generation for processors falling within the Standard Industrial Classification (SIC) System Major Group 20 (Food and Kindred Products) categories.
Evaluation of Antibody Immobilization Methods for Detection of Salmonella using Impedimetric Biosensor
Kim, Gi-Young ; Moon, Ji-Hea ; Om, Ae-Son ; Yang, Gil-Mo ; Moh, Chang-Yeon ; Kang, Suk-Won ; Cho, Han-Keun ;
Journal of Biosystems Engineering, volume 34, issue 4, 2009, Pages 254~259
DOI : 10.5307/JBE.2009.34.4.254
Conventional methods for pathogen detection and identification are labor-intensive and take several days to complete. Recently developed biosensors have shown potential for the rapid detection of foodborne pathogens. In this study, an impedimetric biosensor was developed for rapid detection of Salmonella typhimurium. To develop the biosensor, an interdigitated microelectrode (IME) was fabricated by using semiconductor fabrication process. Anti-Salmonella antibodies were immobilized based on either avidin-biotin binding or self assembled monolayer (SAM) on the surface of the IME to form an active sensing layer. To evaluate effect of antibody immobilization methods on sensitivity of the sensor, detection limit of the biosensor was analyzed with Salmonella samples innoculated in phosphate buffered saline (PBS) or food extract. The impedimetric biosensor based on SAM immobilization method produced better detection limit. The biosensor could detect 107 CFU/mL of Salmonella in pork meat extract. This method may provide a simple, rapid, and sensitive method to detect foodborne pathogens.
Analysis of Resonance Characteristics of Bulk Acoustic Resonator with Acoustic Bragg Reflector for Biosensor Development
Kim, Hee-Young ; Kim, Ki-Bok ; Ha, Tae-Hoon ; Kim, Yong-Il ; Lee, Jin-Min ; Kim, Man-Soo ;
Journal of Biosystems Engineering, volume 34, issue 4, 2009, Pages 260~268
DOI : 10.5307/JBE.2009.34.4.260
As a basic study to develop a high sensitive biosensor using film bulk acoustic resonator, the mathematical model for analyzing the resonance characteristics of bulk acoustic resonator with acoustic Bragg reflectors was investigated. The simulation results due to the number of acoustic Bragg reflectors with low and high acoustic impedance materials were compared with the experimental results for 1, 2.25 and 5 MHz of PZT based bulk acoustic resonators with various acoustic Bragg reflectors. At the fabricated bulk acoustic resonator with an odd number of acoustic Bragg reflectors, low and high acoustic impedance materials in sequence under the bottom electrode showed better resonance characteristics than even number of acoustic Bragg reflectors. The changes of resonance frequencies due to the increase of number of acoustic Bragg reflectors by simulation and experiment, respectively showed approximately similar tendency but some differences in input impedance between the experiment and simulation were found. The derived mathematical model for describing the resonance characteristics of the bulk acoustic resonator with acoustic Bragg reflector will be available for analyzing the design parameters for development of biosensor using bulk acoustic resonator.
Influence of Fertilizing Methane Fermentation Digested Sludge to Rice Paddy on Growth of Rice and Rice Taste
Ryu, Chan-Seok ; Lee, Choung-Keun ; Umeda, Mikio ; Lee, Seung-Kyu ;
Journal of Biosystems Engineering, volume 34, issue 4, 2009, Pages 269~277
DOI : 10.5307/JBE.2009.34.4.269
In this research, the vegetation growth and rice taste of the liquid fertilizer applied fields (LF) were compared with those of chemical fertilizer applied fields(CF) in order to confirm the possibility of methane fermentation digested sludge as liquid fertilizer using precision agriculture and remote sensing technology. In panicle initiation stage, the vegetation growth at LF was 60%~80% of it at CF and there were significant difference of nitrogen contents between CF and LF. The estimation model of nitrogen contents was established by GNDVI (R=0.607, RMSE=
, n=36, p<0.01). In heading stage, vegetation growth at LF went close to it at CF as ratio of 80%~95%. The nitrogen content estimation model was also established (R=0.650, RMSE=
, n=35, p<0.01) and there were significant difference of spatial variability between LF and CF. There were not significant difference of rice taste and it's elements, when three samples, which were more than twice of standard deviation, were excepted. The protein contents estimation model using GNDVI of before harvesting (R=0.700, RMSE=0.470%, n=29, p<0.01) were more suitable to predict the protein contents at harvesting comparing with it of heading stage(R=0.610, RMSE=0.521%, n=29, p<0.01).
PC controlled Autonomous Navigation System for GPS Guided Field Robot
Han, Jae-Won ; Park, Jae-Ho ; Hong, Sung-Kyung ; Ryuh, Young-Sun ;
Journal of Biosystems Engineering, volume 34, issue 4, 2009, Pages 278~285
DOI : 10.5307/JBE.2009.34.4.278
Navigation system is applied in variety of fields including the simple location positioning, autopilot navigation of unmanned robot tractor, autonomous guidance systems for agricultural vehicles, construction of large field works that require high precision and map making process. Particularly utilization of GPS (Global Positioning System) is very common in the present navigation system. This study introduces a navigation system for autonomous field robot that travels to the pre-input path using GPS information. Performance of the GPS- based navigation is highly depended on its receiving rate because GPS receivers do not acquire any navigation information in the period between the refresh intervals. So this study presents an algorithm that improves an accuracy of the navigation by estimation the positional information during the blind period of a low rate GPS receiver. In fact the algorithm calculated the robot's heading in a 50 Hz rate, so the blind period of an 1 Hz GPS receiver is extensively covered. Consequently implementation of the algorithm to the GPS based navigation showed an improvement in guidance accuracy. The conventional field robot directly carried an expensive control computer and sensors onboard, therefore the miniaturization and weight reduction of the robot was limited. In this paper, the field robot carried only communication equipments such as GPS module, normal RC receiver, and bluetooth modem. This enabled the field robot to be built in an economic cost and miniature size.
Bio-mechanical Analysis on the Lower Back using Human Model during Pushing the Manual Vehicles
Lim, Dae-Seob ; Lee, Kyoung-Suk ; Choi, Ahn-Ryul ; Kim, Young-Jin ; Mun, Joung-Hwan ;
Journal of Biosystems Engineering, volume 34, issue 4, 2009, Pages 286~294
DOI : 10.5307/JBE.2009.34.4.286
A high prevalence of protected horticulture farmer's work-related musculo-skeletal disorders (MSDs) have been reported in precedent studies. One of the tasks required ergonomic intervention to reduce the musculo-skeletal risks is the task of product transporting. The purpose of this study is to evaluate quantitatively the spinal load of operator using manual vehicles to predict and prevent musculo-skeletal risks. Spinal load in operators using 4 kinds of manual vehicle were analyzed. Before evaluating spinal load on operator using the manual vehicles by bio-mechanical approach, it is needed to validate human model. In this study, ADAMS LifeMOD human model shows satisfactory results, comparing with already validated model's results or measured results. While Operators pushed the manual vehicles(wheelbarrow, Trolley, 2 wheel cart, and 4 wheel cart) contained loads that were 0 N and 800 N, their spinal loads(compression force, shear force) were evaluated. The compression force demonstrated under the NIOSH action limits - 3410N - for all 4 manual vehicle's operators(McGill 1997; Marras 2000). However, the lateral shear force demonstrated over the University of Waterloo - 500N - for all 3 manual vehicle's operators except 4Wheel cart (Yingline and McGill, 1999). Therefore, operators have risks in prevalence of the musculo-skeletal disorders due to shear force. The findings of this study suggest that it need to be determine the spinal load, especially lateral shear force in designing the manual vehicles in the future.