Modeling and analyzing the micowave energy absorption of paddy and mortality assesment of insects

In this thesis, dielectric modeling of paddy and insect (R. dominica) was developed to analyze the characteristics for microwave heat treatment to the Malaysian paddy MR219. Electromagnetic fields at lower frequencies (< 1GHz) are of great significance for heating the paddy, because 100% morta...

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Main Author:	Md. Manjur, Ahmed
Format:	Thesis
Language:	English
Subjects:	Dielektrik padi Paddy mortality Electromagnetic behavior testing Agrotechnology innovations Microvawe energy Microwave heat treatment
Online Access:	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/31156/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/31156/2/Full%20text.pdf
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spelling	my-unimap-311562014-01-12T13:05:19Z Modeling and analyzing the micowave energy absorption of paddy and mortality assesment of insects Md. Manjur, Ahmed In this thesis, dielectric modeling of paddy and insect (R. dominica) was developed to analyze the characteristics for microwave heat treatment to the Malaysian paddy MR219. Electromagnetic fields at lower frequencies (< 1GHz) are of great significance for heating the paddy, because 100% mortality of lesser grain borer, R. dominica (F.) and weevil, S. oryzae may be obtained with minimal losses of rice quality when subjected to the same electromagnetic field. The electromagnetic behavior of the dielectric modeling of paddy and cavity with excitation waveguide was analyzed to simulate the electric field distribution. The temperature dependency of the dielectric properties of R. dominica (F.) and paddy MR219 were analyzed for the frequency range of 200 MHz – 20 GHz and for the temperature range of 240 C – 650 C. The response surface method was used to develop the relationship between the dielectric properties and related factors (i.e., temperature, frequency and moisture) in terms of regional and 3D views. General equations that utilize frequency, temperature and moisture, were developed to describe the dielectric properties. Microwave simulation was used to model the lethal value of R. dominica and S. oryzae in terms of lethal temperature per unit absorbed energy. The proposed dielectric modeling and microwave simulation analysis of bulk paddy in the microwave cavity were validated with the actual microwave heating, thereby confirming the accuracy of this approach in simulating the novel heterogeneous post-harvest bulk paddy inside the microwave cavity. Mortality and energy absorption were analyzed and modeled in terms of increasing temperature. The world-wide interest in reduced pesticide use for secure health and microwave heating is the possible effective means in heat treatments to control insects in post harvest paddy or milled rice. The nutritional results of paddy MR219 showed that the microwave-treated samples are significantly the same as the microwave untreated sample. Sensory qualities and characteristics were not affected by the treatment. In the modeling, standard errors were small and factors (i.e., frequency, temperature or moisture) proved a meaningful addition to this model. Universiti Malaysia Perlis (UniMAP) 2012 Thesis en http://dspace.unimap.edu.my:80/dspace/handle/123456789/31156 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/31156/1/Page%201-24.pdf d641e622c4690dbc59da0cc59c98bfe1 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/31156/2/Full%20text.pdf e3a2325ec022c6e5260d98f6a7c5e196 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/31156/3/license.txt 8a4605be74aa9ea9d79846c1fba20a33 Dielektrik padi Paddy mortality Electromagnetic behavior testing Agrotechnology innovations Microvawe energy Microwave heat treatment School of Computer and Communication Engineering
institution	Universiti Malaysia Perlis
collection	UniMAP Institutional Repository
language	English
topic	Dielektrik padi Paddy mortality Electromagnetic behavior testing Agrotechnology innovations Microvawe energy Microwave heat treatment
spellingShingle	Dielektrik padi Paddy mortality Electromagnetic behavior testing Agrotechnology innovations Microvawe energy Microwave heat treatment Md. Manjur, Ahmed Modeling and analyzing the micowave energy absorption of paddy and mortality assesment of insects
description	In this thesis, dielectric modeling of paddy and insect (R. dominica) was developed to analyze the characteristics for microwave heat treatment to the Malaysian paddy MR219. Electromagnetic fields at lower frequencies (< 1GHz) are of great significance for heating the paddy, because 100% mortality of lesser grain borer, R. dominica (F.) and weevil, S. oryzae may be obtained with minimal losses of rice quality when subjected to the same electromagnetic field. The electromagnetic behavior of the dielectric modeling of paddy and cavity with excitation waveguide was analyzed to simulate the electric field distribution. The temperature dependency of the dielectric properties of R. dominica (F.) and paddy MR219 were analyzed for the frequency range of 200 MHz – 20 GHz and for the temperature range of 240 C – 650 C. The response surface method was used to develop the relationship between the dielectric properties and related factors (i.e., temperature, frequency and moisture) in terms of regional and 3D views. General equations that utilize frequency, temperature and moisture, were developed to describe the dielectric properties. Microwave simulation was used to model the lethal value of R. dominica and S. oryzae in terms of lethal temperature per unit absorbed energy. The proposed dielectric modeling and microwave simulation analysis of bulk paddy in the microwave cavity were validated with the actual microwave heating, thereby confirming the accuracy of this approach in simulating the novel heterogeneous post-harvest bulk paddy inside the microwave cavity. Mortality and energy absorption were analyzed and modeled in terms of increasing temperature. The world-wide interest in reduced pesticide use for secure health and microwave heating is the possible effective means in heat treatments to control insects in post harvest paddy or milled rice. The nutritional results of paddy MR219 showed that the microwave-treated samples are significantly the same as the microwave untreated sample. Sensory qualities and characteristics were not affected by the treatment. In the modeling, standard errors were small and factors (i.e., frequency, temperature or moisture) proved a meaningful addition to this model.
format	Thesis
author	Md. Manjur, Ahmed
author_facet	Md. Manjur, Ahmed
author_sort	Md. Manjur, Ahmed
title	Modeling and analyzing the micowave energy absorption of paddy and mortality assesment of insects
title_short	Modeling and analyzing the micowave energy absorption of paddy and mortality assesment of insects
title_full	Modeling and analyzing the micowave energy absorption of paddy and mortality assesment of insects
title_fullStr	Modeling and analyzing the micowave energy absorption of paddy and mortality assesment of insects
title_full_unstemmed	Modeling and analyzing the micowave energy absorption of paddy and mortality assesment of insects
title_sort	modeling and analyzing the micowave energy absorption of paddy and mortality assesment of insects
granting_institution	Universiti Malaysia Perlis (UniMAP)
granting_department	School of Computer and Communication Engineering
url	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/31156/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/31156/2/Full%20text.pdf
_version_	1747836783499935744

Modeling and analyzing the micowave energy absorption of paddy and mortality assesment of insects

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