S. Minaee

Tarbiat Modares University

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Mohammad Hadi Khoshtaghaza

Tarbiat Modares University

Barat Ghobadian

Tarbiat Modares University

Bahram Hosseinzadeh Samani

Shahrekord University

Ahmad Sharifi

Agricultural Research & Education Organization

Bahareh Jamshidi

Agricultural Research & Education Organization

Soleiman Abbasi

Tarbiat Modares University

Gholamhassan Najafi

Tarbiat Modares University

T. Tavakoli Hashjin

Tarbiat Modares University

Babak Beheshti

Islamic Azad University, Science and Research Branch

Mojtaba Naderi-Boldaji

Shahrekord University

Cooperative Institutions

Tarbiat Modares University

University of Tehran

Agricultural Research & Education Organization

Agricultural Biotechnology Research Institute of Iran

Sari Agricultural Sciences and Natural Resources University

Islamic Azad University Shahr-e-Rey

Islamic Azad University, Tehran

Urmia University

Islamic Azad University, Science and Research Branch

Shahrekord University

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Measurement and evaluation coefficient of friction of annual medic seeds

M. H. Aghkhani S. Minaee T. T. Hashtjin

Coefficient of friction

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Effect of ultrasonic waves on pasteurization of sour cherry juice

International Journal of Biosciences (IJB) (2013)

Bahram Hosseinzadeh Samani Mohammad Hadi Khoshtghaza S. Minaee Soleiman Abbasi

The objective of this study was to explore the effects of ultrasound probe diameter, reactor diameter, and juice level in the reactor upon effectiveness of ultrasound waves on decontamination of sour cherry juice. Results showed that the effects of probe diameter, reactor diameter and reactor height were significant (P<0.01). In addition, by increasing the probe diameter from 30 to 40 mm no significant effect was seen in reactors with 65 and 75 mm diameter; however, for 85 mm diameter reactor, the effect of ultrasound waves diminished and, as a result, the total microbial count increased. Increasing the probe diameter from 20 to 30 and then 40 mm, on the average decreased the total microbial count by 15% and 5%, respectively. This effect was obvious at 85 mm diameter, and any increase in height steepened the slope of total microbial count. Finally, using the response surface method (RSM), optimum values were obtained for reactor diameter, reactor height, and probe diameter.

Pasteurization

Fruit juice

10.12692/ijb/3.12.193-200

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Large deformation modeling in soil-tillage tool interaction using advanced 3D nonlinear finite element approach

SMO'06 Proceedings of the 6th WSEAS International Conference on Simulation, Modelling and Optimization (2006)

R. Jafari T. Tavakoli Hashjin S. Minaee M. H. Raoufat

This paper aims to introduce a finite element model to investigate the performance of bent leg (BL) plow and investigate the performance of new design as compared to a conventional one using finite element method approach (FEM).The difference between the modified and conventional BL plows is the direction of angle between the projection of cutting blade on horizontal plane normal to plow shank and the line perpendicular to the plow shank in the same plane. The effects of BL plow geometry on plow performance for both plows were studied and the results were verified experimentally. Conventional (B1), and modified (B2) designs of BL plow were modeled at three rake angles (R1= 7.5°, R2= 15° and R3= 22.5°), therefore a total six treatments were considered for both theoretical and experimental studies. A three dimensional non linear finite element model was developed using appropriate FEM software (ANSYS 8.1). The soil media was considered as elastic-perfectly plastic with Drucker-Prager material model. Soil meshing, contact elements and soil frictional properties were updated after each incremental time step. Variation of draft force as calculated by the FEM model indicates that the minimum and maximum draft forces correspond to B2R2 and B1R3 treatments respectively. The experimental results of draft force were in good agreement with predicted data.

Rake angle

Plough

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Modeling the Simultaneous Effects of Microwave and Ultrasound Treatments on Sour Cherry Juice Using Response Surface Methodology

Journal of Agricultural Science and Technology (2015)

Bahram Hosseinzadeh Samani Mohammad Hadi Khoshtaghaza S. Minaee Soleiman Abbasi

This study aimed to examine the effectiveness of combined microwave-ultrasonic pasteurization system on Escherichia coli and vitamin C content in sour cherry juice (SCJ). Based on the findings, microwave output power, ultrasound power, and ultrasonic exposure time as well as the microwave-induced temperature were the most effective factors in reducing E. coli and vitamin C content. In addition, the microwave-induced temperature and ultrasonic exposure time, as independent variables, were both effective on E. coli removal. At higher temperatures, the effectiveness of ultrasonic waves as well as cavitation intensity declined. However, their combined effect (ultrasound and temperature) was more significant than their individual effect. It was also found that any increase in ultrasound power, ultrasonic exposure time, and microwave output power led to a significant reduction in vitamin C content, while the ultrasound power was the most effective. On the basis of RSM modeling, the optimum processing condition was: 352.21W microwave output power, 49.94uC temperature, 475.13W ultrasound power and 6 minutes of exposure time. On the basis of response surface methodology (RSM) modelling, the maximum vitamin C content was 142.5 mg per 100 mL with no remaining E. coli .

Pasteurization

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A dielectric-based combined horizontal sensor for on-the-go measurement of soil water content and mechanical resistance

Sensors and Actuators A Physical (2011)

Mojtaba Naderi-Boldaji Ahmad Sharifi Bahareh Jamshidi Mohammad Younesi Alamooti S. Minaee

Soil moisture sensor

Tine

Precision Agriculture

Load cell

10.1016/j.sna.2011.07.021

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Citations (19)

Some physico-mechanic properties of unsplit pistachio nut.

Agricultural and biosystems engineering for a sustainable world. International Conference on Agricultural Engineering, Hersonissos, Crete, Greece, 23-25 June, 2008. (2008)

Hossein Maghsoudi Mohammad Hadi Khoshtaghaza S. Minaee

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Fluidized Bed Drying Characteristics of Soybeans

Journal of Agricultural Science and Technology (2014)

Hosain Darvishi Mohammad Hadi Khoshtaghaza S. Minaee

The present study investigated the influence of air temperature and velocity on the drying kinetics and specific energy consumption during fluidized bed drying of soybean at 80, 100, 120 and 140oC and airflow rates of 1.8, 3.1 and 4.5 m s -1 . Six mathematical models for describing the fluidized bed drying behavior were investigated. The value of the drying rate coefficient (k) increased with increasing air temperature and velocity and thus reduced the drying time. Although the Midilli model showed the best fit, the Page’s model was selected, since it had almost a similar performance but the model is simpler with two parameters instead of four. The drying of soybean seeds took place in the falling rate period and was controlled by moisture diffusion. A third order polynomial relationship was found to correlate the effective moisture diffusivity with moisture content. Effective diffusivity increased with decreasing moisture content and increasing temperature and air velocity. It varied from 4.595×10 �11 to 3.325×10 �10 m 2 s -1 over the temperature and velocity ranges. Values of the activation energy for moisture diffusion were determined as 35.33, 32.85 and 30.73 kJ mol -1 for air velocities of 1.8, 3.1 and 4.5 m/s, respectively. It was found that decrease in energy of activation caused an increase in drying rate. The minimum and the maximum specific energy requirements for drying of soybean seeds were determined as 26.90 and 111.05 kWh kg -1 for 140oC with 1.8 m s -1 and 80oC with 4.5 m s -1 air velocity, respectively.

Air velocity

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Determination of moisture sorption isotherm for whole almond and estimate the best appropriate model.

Agricultural and biosystems engineering for a sustainable world. International Conference on Agricultural Engineering, Hersonissos, Crete, Greece, 23-25 June, 2008. (2008)

Babak Beheshti Mohammad Hadi Khoshtaghaza S. Minaee B. M. Mirmahaleh

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Machine vision recognition algorithm development as the first stage of apple robotic harvesting.

Mohammad Bagher Lak S. Minaee jafar amiriparian Babak Beheshti

ABSTRACT Machine vision application in mechanized tree fruits harvesting operations can be implemented by image processing algorithms. In this paper, a combinati-on of color and shape processing was used to segment the red apples images in order to detect an apple fruit in each image and to determine its location. Thirty images had been taken, randomly. Images were filtered, converted to binary images, and noise reduced. The algorithm was finally assessed. The algorithm could detect apple fruits in the 83.33% of images and determined apple locations with precision of 85.17%. Key words : machine vision, image processing algorithm, fruit detection, apple harvesting. INTRODUCTION Iran is the 4 th apple producer in the world (Food and Agriculture Organization, 2009) which indicates the need for mechanization and implementation of appropriate technolo-gies. Tree fruits harvesting is a susceptible operation. Its profitability may be influenced by labor inaptitude, costs and unavailability, low quality harvesting, and operation untimeli-ness. So, mechanized harvesting operation may solve the problems.

Machine Vision

Raspberry Pi

Unavailability

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Design and construction of hydroponic greenhouse of cucumber equipped with fuzzy control system.

Hamid Khafajeh S. Minaee Maedeh Delavar A. Banakar

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