This paper presents the process of microwave heating treatment to kill the rice weevil to improve the quality and quantity of rice for industrial storage purpose. Since many years ago, heat uniformity has been a major drawback of microwave heating application. The heat distribution in rice after undergoing four treatments with a microwave frequency of 2.4 GHz at the different power level of 540 and 900W with different time treatment of 50 and 80 seconds are shown in this paper. The samples are placed inside a square container, 8.5 cm x 8.5 cm x 2 cm. Each sample contains 15 adults of rice weevil of Sitophilus Oryzae placed randomly in the container and the mortality of the rice weevil for adult stages from each treatment are observed and interpreted in Analysis of Variance (ANOVA) technique.
Increasing Water Temperature in a Bio-Geyser during Ensiling of Berseem by In...CrimsonpublishersMCDA
A model silo cum bio geyser system was developed in The University of Agriculture Peshawar to utilize the biomass. In this silo, impact of biomass combination (Berseem and Mott grass) and fermenting agent (rumen liquor) on the amount of heat loss during ensiling. The experiments were laid out in completely randomized design having four treatments and three replications with twelve observations. In the silo water was stored in a Copper pipe located in the middle of the silo while silage was prepared around the pipe. During the fermentation process heat evolved was transferred to the pipe heating the water. Two biomass combination (Berseem only and Berseem 50% + Mott grass 50%) and two levels of fermenting agent (rumen liquor 1% and rumen liquor 0% as control) were used. Four treatments involved in this experiment were; 1. Berseem + rumen liquor, 2. Berseem + Mott grass + rumen liquor, 3. Berseem + control and 4. Berseem + Mott grass + control. Biomass combination and fermenting agent showed a significant effect on water temperature. It was also observed that the maximum temperature of water was recorded 480C in treatment 4 while minimum temperatures of 430C in treatment 3 and 390C in treatment 1 respectively. It was concluded that the highest loss of heat during ensiling was obtained during the fermentation process of 5 days.
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
The Effect of Feeding Improvement of Local PO Cattle and It’s Crossbred To Ph...iosrjce
IOSR Journal of Agriculture and Veterinary Science (IOSR-JAVS) is a double blind peer reviewed International Journal edited by the International Organization of Scientific Research (IOSR). The journal provides a common forum where all aspects of Agricultural and Veterinary Sciences are presented. The journal invites original papers, review articles, technical reports and short communications containing new insight into any aspect Agricultural and Veterinary Sciences that are not published or not being considered for publication elsewhere.
Structural and Physical Properties of Biofield Treated Thymol and MentholMahendra Kumar Trivedi
Thymol and menthol are naturally occurring plant derived compounds, which have excellent pharmaceutical and antimicrobial applications. The aim of this work was to evaluate the impact of biofield energy on physical and structural characteristics of thymol and menthol. The control and biofield treated compounds (thymol and menthol) were characterized by X-ray diffraction (XRD), Differential Scanning Calorimetry (DSC), Thermogravimetric analysis (TGA), and Fourier Transform Infrared Spectroscopy (FT-IR). XRD study revealed increase in intensity of the XRD peaks of treated thymol, which was correlated to high crystallinity of the treated sample. The treated thymol showed significant increase in crystallite size by 50.01% as compared to control. However, the treated menthol did not show any significant change in crystallite size as compared to control. DSC of treated menthol showed minimal increase in melting temperature (45oC) as compared to control (44oC). The enthalpy (ĢH) of both the treated compounds (thymol and menthol) was decreased as compared to control samples which could be due the high energy state of the powders. TGA analysis showed that thermal stability of treated thymol was increased as compared to control; though no change in thermal stability was noticed in treated menthol. FT-IR spectrum of treated thymol showed increase in wave number of .OH stretching vibration peak (14 cm-1) as compared to control. Whereas, the FT-IR spectrum of treated menthol showed appearance of new stretching vibration peaks in the region of 3200-3600 cm-1 which may be attributed to the presence of hydrogen bonding in the sample as compared to control. Overall, the result showed that biofield treatment has substantially changed the structural and physical properties of thymol and menthol.
Increasing Water Temperature in a Bio-Geyser during Ensiling of Berseem by In...CrimsonpublishersMCDA
A model silo cum bio geyser system was developed in The University of Agriculture Peshawar to utilize the biomass. In this silo, impact of biomass combination (Berseem and Mott grass) and fermenting agent (rumen liquor) on the amount of heat loss during ensiling. The experiments were laid out in completely randomized design having four treatments and three replications with twelve observations. In the silo water was stored in a Copper pipe located in the middle of the silo while silage was prepared around the pipe. During the fermentation process heat evolved was transferred to the pipe heating the water. Two biomass combination (Berseem only and Berseem 50% + Mott grass 50%) and two levels of fermenting agent (rumen liquor 1% and rumen liquor 0% as control) were used. Four treatments involved in this experiment were; 1. Berseem + rumen liquor, 2. Berseem + Mott grass + rumen liquor, 3. Berseem + control and 4. Berseem + Mott grass + control. Biomass combination and fermenting agent showed a significant effect on water temperature. It was also observed that the maximum temperature of water was recorded 480C in treatment 4 while minimum temperatures of 430C in treatment 3 and 390C in treatment 1 respectively. It was concluded that the highest loss of heat during ensiling was obtained during the fermentation process of 5 days.
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
The Effect of Feeding Improvement of Local PO Cattle and It’s Crossbred To Ph...iosrjce
IOSR Journal of Agriculture and Veterinary Science (IOSR-JAVS) is a double blind peer reviewed International Journal edited by the International Organization of Scientific Research (IOSR). The journal provides a common forum where all aspects of Agricultural and Veterinary Sciences are presented. The journal invites original papers, review articles, technical reports and short communications containing new insight into any aspect Agricultural and Veterinary Sciences that are not published or not being considered for publication elsewhere.
Structural and Physical Properties of Biofield Treated Thymol and MentholMahendra Kumar Trivedi
Thymol and menthol are naturally occurring plant derived compounds, which have excellent pharmaceutical and antimicrobial applications. The aim of this work was to evaluate the impact of biofield energy on physical and structural characteristics of thymol and menthol. The control and biofield treated compounds (thymol and menthol) were characterized by X-ray diffraction (XRD), Differential Scanning Calorimetry (DSC), Thermogravimetric analysis (TGA), and Fourier Transform Infrared Spectroscopy (FT-IR). XRD study revealed increase in intensity of the XRD peaks of treated thymol, which was correlated to high crystallinity of the treated sample. The treated thymol showed significant increase in crystallite size by 50.01% as compared to control. However, the treated menthol did not show any significant change in crystallite size as compared to control. DSC of treated menthol showed minimal increase in melting temperature (45oC) as compared to control (44oC). The enthalpy (ĢH) of both the treated compounds (thymol and menthol) was decreased as compared to control samples which could be due the high energy state of the powders. TGA analysis showed that thermal stability of treated thymol was increased as compared to control; though no change in thermal stability was noticed in treated menthol. FT-IR spectrum of treated thymol showed increase in wave number of .OH stretching vibration peak (14 cm-1) as compared to control. Whereas, the FT-IR spectrum of treated menthol showed appearance of new stretching vibration peaks in the region of 3200-3600 cm-1 which may be attributed to the presence of hydrogen bonding in the sample as compared to control. Overall, the result showed that biofield treatment has substantially changed the structural and physical properties of thymol and menthol.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Non thermal processing of food- Pulsed electric field and visible lightT. Tamilselvan
In this presentation i gave an intro to non thermal processing methods in food and their advantages and disadvantages and have brief working of Pulsed electric field and pulsed visible light over other methods.
Abstract Fresh spinach leaves with 50g weight were taken from the market and 9.86 moisture content on dry basis were dried in a microwave oven using four different microwave power levels ranging between 90 and 350 W, until the moisture content fell down to 0.1 on dry basis. The drying processes were completed between 570 and 1350s depending on the microwave power level. Moisture ratio and drying rate were calculated. In this study the measured values of moisture ratio were compared with predicted values obtained from Newton, Henderson and Pabis, Midilli et al and pages thin layer drying semi empirical equations. On detailed study of the four model equations, Midilli et al. equation was found to be the best fit for the drying of spinach leaves by spinach leaves by using microwave oven. The fitness of these models was evaluated by using the reduced chi-square, root mean square error and modeling efficiency. The specific energy consumption to evaporate a unit mass of water from the product was also determined. Keywords: Spinach Leaves, Moisture Content, Moisture Ratio, Drying rate and Micro wave.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Modeling the Relationships between the Solar Energy, Trombe Wall Brooder Syst...IJAEMSJORNAL
A brooder is a structure where chicken are kept for stimulating optimal growth. Smallholder poultry production in Kenya faces the challenge of appropriate energy source for brooding. The study evaluatedby simulation and modellingthe performance of a trombe wall in a small-scale brooder. The brooder system under study consist of brick walls and wooden slated floor. The internal dimensions of the brooder being 2.5 x1.2 x 1.5 m.A dynamic model was used for predicting the brooding conditions based on; ambient temperatures, total solar radiation, ventilation size, thickness and colour of the heat absorption wall. The absorption coefficient for glazed brick is 0.35, absorption factor of black colour is 0.9, and thefraction of incident radiation absorbed is 0.89. Considering a wall thickness of 0.15m, thermal conductivity of 0.8 W/m K, density of bricks -1760 kg/m3, surface thermal resistance of the wall - 0.188 m2K, thermal wall surface area of 3.75 m2 and the pen capacity at 30 chicks per square metre. The experimental model of the brooder was solved using a Maltilabcomputer program with appropriate model equations. A case study of Eldoret town was used, where mean monthly solar radiation is 540Wh/m2/dayto 640Wh/m2/day and daily ambient temperature of 14.20C to 280C.The resultant glazed brooder surface temperatures were 770C to 850C. In view of the appropriate brooding temperatures for day old chicks being 340C while at 28 days of age required temperature range is 21-240C.Consequently, the trombe wall can be used to optimally regulate brooder temperatures. Further, the design expert software was used to establish relationship within solar radiation, trombe wall surface temperatures and the optimal brooder envelope temperatures. The analyses showed a linear relationship amongst solar radiation, trombe wall surface temperatures and the optimal brooding temperatures. The results are appropriate data for designing a brooder for physical and physiological studies of chicks.
Modeling the solar drying kinetics of gamma irradiation-pretreated oyster mus...Nii Korley Kortei
Oyster mushroom slices (Pleurotus ostreatus) were exposed to ɣ-radiation as a pretreatment and
solar dried to investigate the influence of irradiation on drying kinetics. Processing conditions
included exposure of mushrooms to 0 kGy (control), 0.5 kGy, 1.0 kGy, 1.5 kGy and 2.0 kGy
of ɣ-radiation at a dose rate of 1.7 kGy/h and drying at a mean temperature of 53.2±6.4°C.
Experimental drying data were fitted to 5 thin layer drying models by non-linear regression.
Irradiation was observed to enhance the drying rate of mushroom slices, with higher doses
causing faster moisture removal. Drying characteristics of slices exposed to lower dosages were
best described by Page’s model (R2=0.9878, 0.9967, 0.9925 correspondingly for “control” (0.0
kGy), 0.5 and 1.0 kGy while the Diffusion model best fit the data for those exposed to higher
doses of radiation (R2=0.9938, 0.9890 for 1.5 and 2.0 kGy respectively). Deff ranged from 1.88
to 2.44 x 10-08 and increase from “control”, 0.5 kGy, 1.0 kGy, 1.5 kGy to 2.0 kGy. Irradiation
of mushrooms as a pretreatment for drying increases moisture diffusivity and drying rate with
higher doses having the most effect.
The aonla (Phyllanthus emblica), a fruit rich in vitamin-C, has high medicinal importance in
human life. Drying of aonla in the form of flakes and powder is one of the widely used methods of
its preservation. Thermal kinetics during drying a hygroscopic material in thin layer, the moisture
ratio is calculated by the Half Life Time Method. The experiment was conducted at an average
velocity of 0.48m/s, relative humidity 35% and temperature in the range from 40 to 750C. Comparing
the experimental values with the predicted values using Newton’s Model, Page Model, Modified
Page Model on the basis of Root Mean Square Error (RMSE), chi-square(χ
2
) and Efficiency (EF),
RMSE and χ
2 were found lowest and EF .RMSE lay between 0.0382 and 0.0094, reduced χ
2
between 0.000132 and 0.00761 and EF between 0.9598 and 0.9985.Thus, this thermal kinetic model
can be used to predict the moisture of the aonla at any drying instant during thin layer drying
process with reasonable accuracy.
Statistical Modelling of Drying Characteristics of Unripe Plantain (Musa Para...Dr. Amarjeet Singh
This work is designed to carry out the statistical modelling of the drying characteristics of unripe plantain (Musa paradisiaca) slices and to study the effect of drying temperature and slice thickness on drying characteristics. The test samples were dried in a laboratory scale oven dryer at varying temperatures of 700C, 800C and 900C, and different slice thicknesses of 2mm, 3mm and 4mm.The result obtained indicated that drying temperature and slice thickness had significant effect on drying rate and hence moisture profile. The moisture ratio – drying time data obtained were fitted to ten thin layer drying models. The fit quality obtained with each model was evaluated using statistical tests namely; coefficient of determination (R2), root mean square error (RMSE), reduced chi-square (X2), and standard error of estimate (SEE). Although most of the models fitted quite well to the experimental data, Page and Modified Page models showed the highest average R2 and the lowest average RMSE, X2 and SEE values. Page and modified Page models were selected and found suitable to represent the drying characteristics of unripe plantain slices and predict drying times.
Effects of Temperature on the Growth and Development of Culex pipiens Complex...iosrjce
IOSR Journal of Pharmacy and Biological Sciences(IOSR-JPBS) is a double blind peer reviewed International Journal that provides rapid publication (within a month) of articles in all areas of Pharmacy and Biological Science. The journal welcomes publications of high quality papers on theoretical developments and practical applications in Pharmacy and Biological Science. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
Influence of Blanching on the Drying Characteristics of Convective Hot Air Dr...ijtsrd
A research on the drying characteristics of aerial yam using convectional hot air was done. The raw unblanched and blanched samples were dried using convectional hot air. Fan speed, temperature and slice thickness were varied to determine the change in moisture content. The Fourier transform infrared FTIR and scanning electron microscopy SEM were done to determine the functional groups and surface morphology respectively for each sample. FTIR results revealed the presence of some important functional groups such as esters, ethers and nitro compounds, and shows that drying at this temperatures 40 70oC does not alter the nutrient components of this variety of yam. The SEM results showed that important cells were not destroyed at the drying temperature. Batch studies on the drying process also showed that increase in temperature and air speed increased the drying process, but decreases with increase in slice thickness. Effect of drying rate on the sample showed that drying rate increase with increase in temperature and air speed but decrease with increase in slice thickness. After 90 minutes of drying, the drying rate of the 2 mm slice thickness was 0.353 g g.min for drying of aerial yam while for 4 mm and 6 mm slice thickness, the drying rate were 0.261 and 0.169 g g.min respectively, for effect of drying rate on sample thickness. It showed also that blanched aerial yam sampleshad a higher drying rate than the unblanched aerial yam sample at the same conditions. Therefore, the economic advantages of this yam species can be optimized by blanching. Nwadike, E. C | Nwabanne, J. T | Azaka O. A | Abonyi, S. E "Influence of Blanching on the Drying Characteristics of Convective Hot Air Dried Aerial Yam" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-6 , October 2020, URL: https://www.ijtsrd.com/papers/ijtsrd33577.pdf Paper Url: https://www.ijtsrd.com/engineering/mechanical-engineering/33577/influence-of-blanching-on-the-drying-characteristics-of-convective-hot-air-dried-aerial-yam/nwadike-e-c
Influence of heat treatment on Vitamin C Levels in Oyster MushroomIJRTEMJOURNAL
The study was conducted to investigate the influence of heat treatment during drying process of
Oyster mushroom in the tropics. Mushroom growing is carried out under carefully controlled conditions mostly
in bulk in specific designed tunnels with aerated floors. There are two main purposes, firstly pasteurization; to
free the compost from undesirable microbes and pests and secondly conditioning; to become mushroom specific
by getting clear of ammonia and free of readily available carbohydrates. Through proper manipulation of
temperature and ventilation these two primary objectives are accomplished. Mushrooms have been identified as
an underutilized crop in Africa, with many nutritive and health benefits. It does not require much land and
investment. However, it is highly perishable and there is need to process it to lengthen its shelf life by drying.
However, there is need to ensure that the nutrients are not lost in the process. It is for this reason that this
project investigated the effect of drying on nutrient levels in mushroom. Vitamin C levels were monitored in the
course of drying at 80⁰C, 60⁰C, 50⁰C, 40⁰C and in direct sunlight. It was concluded that the temperature that
gave the best drying rate with minimal nutrient loss was 60⁰C. In general, more than half the Vitamin C is lost
during the range of drying temperatures investigated.
Development of Computer Models for Simulating the Optimum Design Parameters o...IJAEMSJORNAL
Brooding refers to early periods of growth when chicks require supplementary heat to maintain their normal body temperature. Generally, chicks kept in environmental temperatures outside their comfort zone suffer low growth and high mortality rates. Solar energy has a regular daily and annual cycle, and is unavailable during periods of bad weather. Hence requires special storage and distribution of the energy different from the utilization of conventional energy sources. In this study computer models were developed for simulating internal brooder envelope brooding Temperatures and ammonia gas concentration in ppm. Further, analysis was carried out to determine the influence of trombe wall thickness on the variation of hourly internal brooder temperatures for various months of the year. The trombe wall thickness were set at 100,150, 200, 250 and 300mm and hourly temperatures simulated using Matlab computer program. The wall thickness of 100mm and 150 mm yielded maximum brooding space temperature of 36.50C and 35.30C respectively. The resultant brooder temperatures were above the optimal brooding temperature range of 340C for day one and 21 to 240C for the 28th day of brooding. However, the lowest brooder temperatures attained for 100mm and 150mm wall thickness were 29.50C and 30.80C respectively. The wall thickness of 300mm yielded temperature range of 25.70C to 280C.From this study it is deduced that the wall thickness of 100 and 150mm are suitable for development of a chicks’ brooder. Though, supplementary source of heat will be required to keep the birds comfortable for the first one week of brooding period. The brooder pH was set at 10 and the ammonia concentration simulated for 28 days at brooding floor temperatures of 14.80C, 18.70C, 22.60C and 27.40C.The results were that the ammonia concentration increased exponentially from day one to the 28th day of brooding for all the floor temperatures. The highest emission of ammonia was recorded at the temperature of 14.80C for the first fifteen days; but after the 15th day the temperature of 18.70C recorded the highest emission of ammonia. Conversely, the temperature of 27.40C yielded the lowest ammonia emission. Therefore, it is essential in the design of brooders to have provision for facilitating removal of birds’ droppings to minimize emission of the ammonia gas from the floor of the brooder.
Performance Evaluation of a Developed Multipurpose Solar Dryerijtsrd
Post harvest losses in developing countries have contributed to the unavailability of foodstuff. Estimation of these losses is generally cited to be of the order of 4 but under very adverse conditions, it is estimated as high as 100 . A significant percentage of these losses are related to improper and or untimely preservation of foodstuffs. This research work is therefore aimed at developing a multipurpose solar dryer. The solar dryer consists mainly of solar collector and dryer chamber compartment. The materials used in this research work include based frame, transparent fiberglass cover, an absorber oven baked Aluminium , thermometer, wire gauze, etc. The frame was constructed from a wood bars with a dimension of 900 mm x 900 mm x 600 mm. The dryer chamber is a truncated rectangle and it comprises of a double walls made up of a plain ply board measuring 800 mm x 800 mm x by 500 mm with a transparent fiberglass cover inclined at an angle of 15o. Three different samples namely sample A sliced plantains , sample B sliced yams , and sample C fish were used for test performance evaluation of the developed multipurpose solar dryer. The results obtained reveal that overall heat energy transfer coefficient of 4.91w m0C, dryer chamber rate of 0.654 kg hr., and dryer chamber area of 0.659 m2 were required by the solar dryer. Besides, the solar dryer dried the three samples used in this research work within duration of 8 hours i.e., 9am 5pm . The maximum solar chamber dryer temperature and ambient temperature were recorded as 55.00 oC and 35.46 oC respectively. Besides, the minimum lower temperature values recorded were obtained as 40.45 oC for solar chamber dryer temperature and 29.02 oC for ambient temperature. The improved results obtained with the multipurpose solar dryer were due to improved temperature obtained with the solar dryer chamber. Orhorhoro EK | Aregbe O | Tamuno RI "Performance Evaluation of a Developed Multipurpose Solar Dryer" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-4 , June 2020, URL: https://www.ijtsrd.com/papers/ijtsrd31195.pdf Paper Url :https://www.ijtsrd.com/engineering/mechanical-engineering/31195/performance-evaluation-of-a-developed-multipurpose-solar-dryer/orhorhoro-ek
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Non thermal processing of food- Pulsed electric field and visible lightT. Tamilselvan
In this presentation i gave an intro to non thermal processing methods in food and their advantages and disadvantages and have brief working of Pulsed electric field and pulsed visible light over other methods.
Abstract Fresh spinach leaves with 50g weight were taken from the market and 9.86 moisture content on dry basis were dried in a microwave oven using four different microwave power levels ranging between 90 and 350 W, until the moisture content fell down to 0.1 on dry basis. The drying processes were completed between 570 and 1350s depending on the microwave power level. Moisture ratio and drying rate were calculated. In this study the measured values of moisture ratio were compared with predicted values obtained from Newton, Henderson and Pabis, Midilli et al and pages thin layer drying semi empirical equations. On detailed study of the four model equations, Midilli et al. equation was found to be the best fit for the drying of spinach leaves by spinach leaves by using microwave oven. The fitness of these models was evaluated by using the reduced chi-square, root mean square error and modeling efficiency. The specific energy consumption to evaporate a unit mass of water from the product was also determined. Keywords: Spinach Leaves, Moisture Content, Moisture Ratio, Drying rate and Micro wave.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Modeling the Relationships between the Solar Energy, Trombe Wall Brooder Syst...IJAEMSJORNAL
A brooder is a structure where chicken are kept for stimulating optimal growth. Smallholder poultry production in Kenya faces the challenge of appropriate energy source for brooding. The study evaluatedby simulation and modellingthe performance of a trombe wall in a small-scale brooder. The brooder system under study consist of brick walls and wooden slated floor. The internal dimensions of the brooder being 2.5 x1.2 x 1.5 m.A dynamic model was used for predicting the brooding conditions based on; ambient temperatures, total solar radiation, ventilation size, thickness and colour of the heat absorption wall. The absorption coefficient for glazed brick is 0.35, absorption factor of black colour is 0.9, and thefraction of incident radiation absorbed is 0.89. Considering a wall thickness of 0.15m, thermal conductivity of 0.8 W/m K, density of bricks -1760 kg/m3, surface thermal resistance of the wall - 0.188 m2K, thermal wall surface area of 3.75 m2 and the pen capacity at 30 chicks per square metre. The experimental model of the brooder was solved using a Maltilabcomputer program with appropriate model equations. A case study of Eldoret town was used, where mean monthly solar radiation is 540Wh/m2/dayto 640Wh/m2/day and daily ambient temperature of 14.20C to 280C.The resultant glazed brooder surface temperatures were 770C to 850C. In view of the appropriate brooding temperatures for day old chicks being 340C while at 28 days of age required temperature range is 21-240C.Consequently, the trombe wall can be used to optimally regulate brooder temperatures. Further, the design expert software was used to establish relationship within solar radiation, trombe wall surface temperatures and the optimal brooder envelope temperatures. The analyses showed a linear relationship amongst solar radiation, trombe wall surface temperatures and the optimal brooding temperatures. The results are appropriate data for designing a brooder for physical and physiological studies of chicks.
Modeling the solar drying kinetics of gamma irradiation-pretreated oyster mus...Nii Korley Kortei
Oyster mushroom slices (Pleurotus ostreatus) were exposed to ɣ-radiation as a pretreatment and
solar dried to investigate the influence of irradiation on drying kinetics. Processing conditions
included exposure of mushrooms to 0 kGy (control), 0.5 kGy, 1.0 kGy, 1.5 kGy and 2.0 kGy
of ɣ-radiation at a dose rate of 1.7 kGy/h and drying at a mean temperature of 53.2±6.4°C.
Experimental drying data were fitted to 5 thin layer drying models by non-linear regression.
Irradiation was observed to enhance the drying rate of mushroom slices, with higher doses
causing faster moisture removal. Drying characteristics of slices exposed to lower dosages were
best described by Page’s model (R2=0.9878, 0.9967, 0.9925 correspondingly for “control” (0.0
kGy), 0.5 and 1.0 kGy while the Diffusion model best fit the data for those exposed to higher
doses of radiation (R2=0.9938, 0.9890 for 1.5 and 2.0 kGy respectively). Deff ranged from 1.88
to 2.44 x 10-08 and increase from “control”, 0.5 kGy, 1.0 kGy, 1.5 kGy to 2.0 kGy. Irradiation
of mushrooms as a pretreatment for drying increases moisture diffusivity and drying rate with
higher doses having the most effect.
The aonla (Phyllanthus emblica), a fruit rich in vitamin-C, has high medicinal importance in
human life. Drying of aonla in the form of flakes and powder is one of the widely used methods of
its preservation. Thermal kinetics during drying a hygroscopic material in thin layer, the moisture
ratio is calculated by the Half Life Time Method. The experiment was conducted at an average
velocity of 0.48m/s, relative humidity 35% and temperature in the range from 40 to 750C. Comparing
the experimental values with the predicted values using Newton’s Model, Page Model, Modified
Page Model on the basis of Root Mean Square Error (RMSE), chi-square(χ
2
) and Efficiency (EF),
RMSE and χ
2 were found lowest and EF .RMSE lay between 0.0382 and 0.0094, reduced χ
2
between 0.000132 and 0.00761 and EF between 0.9598 and 0.9985.Thus, this thermal kinetic model
can be used to predict the moisture of the aonla at any drying instant during thin layer drying
process with reasonable accuracy.
Statistical Modelling of Drying Characteristics of Unripe Plantain (Musa Para...Dr. Amarjeet Singh
This work is designed to carry out the statistical modelling of the drying characteristics of unripe plantain (Musa paradisiaca) slices and to study the effect of drying temperature and slice thickness on drying characteristics. The test samples were dried in a laboratory scale oven dryer at varying temperatures of 700C, 800C and 900C, and different slice thicknesses of 2mm, 3mm and 4mm.The result obtained indicated that drying temperature and slice thickness had significant effect on drying rate and hence moisture profile. The moisture ratio – drying time data obtained were fitted to ten thin layer drying models. The fit quality obtained with each model was evaluated using statistical tests namely; coefficient of determination (R2), root mean square error (RMSE), reduced chi-square (X2), and standard error of estimate (SEE). Although most of the models fitted quite well to the experimental data, Page and Modified Page models showed the highest average R2 and the lowest average RMSE, X2 and SEE values. Page and modified Page models were selected and found suitable to represent the drying characteristics of unripe plantain slices and predict drying times.
Effects of Temperature on the Growth and Development of Culex pipiens Complex...iosrjce
IOSR Journal of Pharmacy and Biological Sciences(IOSR-JPBS) is a double blind peer reviewed International Journal that provides rapid publication (within a month) of articles in all areas of Pharmacy and Biological Science. The journal welcomes publications of high quality papers on theoretical developments and practical applications in Pharmacy and Biological Science. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
Influence of Blanching on the Drying Characteristics of Convective Hot Air Dr...ijtsrd
A research on the drying characteristics of aerial yam using convectional hot air was done. The raw unblanched and blanched samples were dried using convectional hot air. Fan speed, temperature and slice thickness were varied to determine the change in moisture content. The Fourier transform infrared FTIR and scanning electron microscopy SEM were done to determine the functional groups and surface morphology respectively for each sample. FTIR results revealed the presence of some important functional groups such as esters, ethers and nitro compounds, and shows that drying at this temperatures 40 70oC does not alter the nutrient components of this variety of yam. The SEM results showed that important cells were not destroyed at the drying temperature. Batch studies on the drying process also showed that increase in temperature and air speed increased the drying process, but decreases with increase in slice thickness. Effect of drying rate on the sample showed that drying rate increase with increase in temperature and air speed but decrease with increase in slice thickness. After 90 minutes of drying, the drying rate of the 2 mm slice thickness was 0.353 g g.min for drying of aerial yam while for 4 mm and 6 mm slice thickness, the drying rate were 0.261 and 0.169 g g.min respectively, for effect of drying rate on sample thickness. It showed also that blanched aerial yam sampleshad a higher drying rate than the unblanched aerial yam sample at the same conditions. Therefore, the economic advantages of this yam species can be optimized by blanching. Nwadike, E. C | Nwabanne, J. T | Azaka O. A | Abonyi, S. E "Influence of Blanching on the Drying Characteristics of Convective Hot Air Dried Aerial Yam" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-6 , October 2020, URL: https://www.ijtsrd.com/papers/ijtsrd33577.pdf Paper Url: https://www.ijtsrd.com/engineering/mechanical-engineering/33577/influence-of-blanching-on-the-drying-characteristics-of-convective-hot-air-dried-aerial-yam/nwadike-e-c
Influence of heat treatment on Vitamin C Levels in Oyster MushroomIJRTEMJOURNAL
The study was conducted to investigate the influence of heat treatment during drying process of
Oyster mushroom in the tropics. Mushroom growing is carried out under carefully controlled conditions mostly
in bulk in specific designed tunnels with aerated floors. There are two main purposes, firstly pasteurization; to
free the compost from undesirable microbes and pests and secondly conditioning; to become mushroom specific
by getting clear of ammonia and free of readily available carbohydrates. Through proper manipulation of
temperature and ventilation these two primary objectives are accomplished. Mushrooms have been identified as
an underutilized crop in Africa, with many nutritive and health benefits. It does not require much land and
investment. However, it is highly perishable and there is need to process it to lengthen its shelf life by drying.
However, there is need to ensure that the nutrients are not lost in the process. It is for this reason that this
project investigated the effect of drying on nutrient levels in mushroom. Vitamin C levels were monitored in the
course of drying at 80⁰C, 60⁰C, 50⁰C, 40⁰C and in direct sunlight. It was concluded that the temperature that
gave the best drying rate with minimal nutrient loss was 60⁰C. In general, more than half the Vitamin C is lost
during the range of drying temperatures investigated.
Development of Computer Models for Simulating the Optimum Design Parameters o...IJAEMSJORNAL
Brooding refers to early periods of growth when chicks require supplementary heat to maintain their normal body temperature. Generally, chicks kept in environmental temperatures outside their comfort zone suffer low growth and high mortality rates. Solar energy has a regular daily and annual cycle, and is unavailable during periods of bad weather. Hence requires special storage and distribution of the energy different from the utilization of conventional energy sources. In this study computer models were developed for simulating internal brooder envelope brooding Temperatures and ammonia gas concentration in ppm. Further, analysis was carried out to determine the influence of trombe wall thickness on the variation of hourly internal brooder temperatures for various months of the year. The trombe wall thickness were set at 100,150, 200, 250 and 300mm and hourly temperatures simulated using Matlab computer program. The wall thickness of 100mm and 150 mm yielded maximum brooding space temperature of 36.50C and 35.30C respectively. The resultant brooder temperatures were above the optimal brooding temperature range of 340C for day one and 21 to 240C for the 28th day of brooding. However, the lowest brooder temperatures attained for 100mm and 150mm wall thickness were 29.50C and 30.80C respectively. The wall thickness of 300mm yielded temperature range of 25.70C to 280C.From this study it is deduced that the wall thickness of 100 and 150mm are suitable for development of a chicks’ brooder. Though, supplementary source of heat will be required to keep the birds comfortable for the first one week of brooding period. The brooder pH was set at 10 and the ammonia concentration simulated for 28 days at brooding floor temperatures of 14.80C, 18.70C, 22.60C and 27.40C.The results were that the ammonia concentration increased exponentially from day one to the 28th day of brooding for all the floor temperatures. The highest emission of ammonia was recorded at the temperature of 14.80C for the first fifteen days; but after the 15th day the temperature of 18.70C recorded the highest emission of ammonia. Conversely, the temperature of 27.40C yielded the lowest ammonia emission. Therefore, it is essential in the design of brooders to have provision for facilitating removal of birds’ droppings to minimize emission of the ammonia gas from the floor of the brooder.
Performance Evaluation of a Developed Multipurpose Solar Dryerijtsrd
Post harvest losses in developing countries have contributed to the unavailability of foodstuff. Estimation of these losses is generally cited to be of the order of 4 but under very adverse conditions, it is estimated as high as 100 . A significant percentage of these losses are related to improper and or untimely preservation of foodstuffs. This research work is therefore aimed at developing a multipurpose solar dryer. The solar dryer consists mainly of solar collector and dryer chamber compartment. The materials used in this research work include based frame, transparent fiberglass cover, an absorber oven baked Aluminium , thermometer, wire gauze, etc. The frame was constructed from a wood bars with a dimension of 900 mm x 900 mm x 600 mm. The dryer chamber is a truncated rectangle and it comprises of a double walls made up of a plain ply board measuring 800 mm x 800 mm x by 500 mm with a transparent fiberglass cover inclined at an angle of 15o. Three different samples namely sample A sliced plantains , sample B sliced yams , and sample C fish were used for test performance evaluation of the developed multipurpose solar dryer. The results obtained reveal that overall heat energy transfer coefficient of 4.91w m0C, dryer chamber rate of 0.654 kg hr., and dryer chamber area of 0.659 m2 were required by the solar dryer. Besides, the solar dryer dried the three samples used in this research work within duration of 8 hours i.e., 9am 5pm . The maximum solar chamber dryer temperature and ambient temperature were recorded as 55.00 oC and 35.46 oC respectively. Besides, the minimum lower temperature values recorded were obtained as 40.45 oC for solar chamber dryer temperature and 29.02 oC for ambient temperature. The improved results obtained with the multipurpose solar dryer were due to improved temperature obtained with the solar dryer chamber. Orhorhoro EK | Aregbe O | Tamuno RI "Performance Evaluation of a Developed Multipurpose Solar Dryer" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-4 , June 2020, URL: https://www.ijtsrd.com/papers/ijtsrd31195.pdf Paper Url :https://www.ijtsrd.com/engineering/mechanical-engineering/31195/performance-evaluation-of-a-developed-multipurpose-solar-dryer/orhorhoro-ek
Investigation of the appropriate cooking temperature for freshly harvested ma...eSAT Journals
Abstract
The investigation of the appropriate cooking temperature for freshly harvested mature corn cobs is presented. The process of Combination cooking method was utilized in the experimentation to ensure the achievement of the appropriate temperature and duration for the cooking stage. The appropriate cooking temperature and duration was found to be 195oC and 30 minutes respectively. Variations in initial moisture content of the freshly harvested cobs (69.7 - 85.3% wb) did not affect the cooking temperature and duration. Cooking at the determined appropriate temperature and duration resulted in a properly cooked corn cob. Keywords: Browning; Fresh Corn; Cooking Temperature; moisture content
The performance of a fluidized bed dryer integrated biomass furnace with air preheater (FBD with APH) and a fluidized bed dryer integrated biomass furnace without air preheater (FBD without APH) for drying of paddy have been evaluated. The FBD with APH and FBD without APH decreased the moisture of paddy from 24% (wet basis) to 14% (wet basis) within 43 and 47 minutes with average temperatures and relative humidities of 59.58 oC and 59.14oC, and 18.81% and 18.68%, respectively. The drying rate of paddy varied in the range of 0.11 kg/min-0.32 kg/min and 0.10 kg/min- 0.30 kg/min for FBD with APH and FBD without APH, with average values of 0.18kg/min and 0.17kg/min, respectively. The minimum, maximum, and average value specific moisture evaporation rate (SMER) was 0.20 kg/kWh, 0.57 kg/kWh, and 0.31 kg/kWh, respectively for FBD with APH, as well as 0.149 kg/kWh, 0.448 kg/kWh, and 0.252 kg/kWh, respectively, for FBD without APH. The specific energy consumption (SEC), the specific electrical energy consumption (SEEC), and the specific thermal energy consumption (STEC) were varied from 1.749 kWh/kg to 5.076 kWh/kg, 0.090 kWh/kg to 2.872 kWh/kg, and 0.760 kWh/kg to 2.204 kWh/kg, with average values of 3.528 kWh/kg, 1.96 kWh/kg, and 1.532 kWh/kg, respectively for FBD with APH, as well as from 2.234 kWh/kg to 6.702 kWh/kg, 1.056 kWh/kg to 3.167 kWh/kg, and 1.179 kWh/kg to 3.536 kWh/kg, with average values of 4.391 kWh/kg, 2.075 kWh/kg, and 2.316 kWh/kg, respectively, for FBD without APH. The thermal efficiencies of the FBD with APH and FBD without APH were varied between 12.4% and 37.93%, and 9.78% and 29.82%, resvectively, with average values of 20.78% and 16.61%. The thermal efficiency of FBD with APH was higher compared to FBD without APH.
Square transposition: an approach to the transposition process in block cipherjournalBEEI
The transposition process is needed in cryptography to create a diffusion effect on data encryption standard (DES) and advanced encryption standard (AES) algorithms as standard information security algorithms by the National Institute of Standards and Technology. The problem with DES and AES algorithms is that their transposition index values form patterns and do not form random values. This condition will certainly make it easier for a cryptanalyst to look for a relationship between ciphertexts because some processes are predictable. This research designs a transposition algorithm called square transposition. Each process uses square 8 × 8 as a place to insert and retrieve 64-bits. The determination of the pairing of the input scheme and the retrieval scheme that have unequal flow is an important factor in producing a good transposition. The square transposition can generate random and non-pattern indices so that transposition can be done better than DES and AES.
Hyper-parameter optimization of convolutional neural network based on particl...journalBEEI
Deep neural networks have accomplished enormous progress in tackling many problems. More specifically, convolutional neural network (CNN) is a category of deep networks that have been a dominant technique in computer vision tasks. Despite that these deep neural networks are highly effective; the ideal structure is still an issue that needs a lot of investigation. Deep Convolutional Neural Network model is usually designed manually by trials and repeated tests which enormously constrain its application. Many hyper-parameters of the CNN can affect the model performance. These parameters are depth of the network, numbers of convolutional layers, and numbers of kernels with their sizes. Therefore, it may be a huge challenge to design an appropriate CNN model that uses optimized hyper-parameters and reduces the reliance on manual involvement and domain expertise. In this paper, a design architecture method for CNNs is proposed by utilization of particle swarm optimization (PSO) algorithm to learn the optimal CNN hyper-parameters values. In the experiment, we used Modified National Institute of Standards and Technology (MNIST) database of handwritten digit recognition. The experiments showed that our proposed approach can find an architecture that is competitive to the state-of-the-art models with a testing error of 0.87%.
Supervised machine learning based liver disease prediction approach with LASS...journalBEEI
In this contemporary era, the uses of machine learning techniques are increasing rapidly in the field of medical science for detecting various diseases such as liver disease (LD). Around the globe, a large number of people die because of this deadly disease. By diagnosing the disease in a primary stage, early treatment can be helpful to cure the patient. In this research paper, a method is proposed to diagnose the LD using supervised machine learning classification algorithms, namely logistic regression, decision tree, random forest, AdaBoost, KNN, linear discriminant analysis, gradient boosting and support vector machine (SVM). We also deployed a least absolute shrinkage and selection operator (LASSO) feature selection technique on our taken dataset to suggest the most highly correlated attributes of LD. The predictions with 10 fold cross-validation (CV) made by the algorithms are tested in terms of accuracy, sensitivity, precision and f1-score values to forecast the disease. It is observed that the decision tree algorithm has the best performance score where accuracy, precision, sensitivity and f1-score values are 94.295%, 92%, 99% and 96% respectively with the inclusion of LASSO. Furthermore, a comparison with recent studies is shown to prove the significance of the proposed system.
A secure and energy saving protocol for wireless sensor networksjournalBEEI
The research domain for wireless sensor networks (WSN) has been extensively conducted due to innovative technologies and research directions that have come up addressing the usability of WSN under various schemes. This domain permits dependable tracking of a diversity of environments for both military and civil applications. The key management mechanism is a primary protocol for keeping the privacy and confidentiality of the data transmitted among different sensor nodes in WSNs. Since node's size is small; they are intrinsically limited by inadequate resources such as battery life-time and memory capacity. The proposed secure and energy saving protocol (SESP) for wireless sensor networks) has a significant impact on the overall network life-time and energy dissipation. To encrypt sent messsages, the SESP uses the public-key cryptography’s concept. It depends on sensor nodes' identities (IDs) to prevent the messages repeated; making security goals- authentication, confidentiality, integrity, availability, and freshness to be achieved. Finally, simulation results show that the proposed approach produced better energy consumption and network life-time compared to LEACH protocol; sensors are dead after 900 rounds in the proposed SESP protocol. While, in the low-energy adaptive clustering hierarchy (LEACH) scheme, the sensors are dead after 750 rounds.
Plant leaf identification system using convolutional neural networkjournalBEEI
This paper proposes a leaf identification system using convolutional neural network (CNN). This proposed system can identify five types of local Malaysia leaf which were acacia, papaya, cherry, mango and rambutan. By using CNN from deep learning, the network is trained from the database that acquired from leaf images captured by mobile phone for image classification. ResNet-50 was the architecture has been used for neural networks image classification and training the network for leaf identification. The recognition of photographs leaves requested several numbers of steps, starting with image pre-processing, feature extraction, plant identification, matching and testing, and finally extracting the results achieved in MATLAB. Testing sets of the system consists of 3 types of images which were white background, and noise added and random background images. Finally, interfaces for the leaf identification system have developed as the end software product using MATLAB app designer. As a result, the accuracy achieved for each training sets on five leaf classes are recorded above 98%, thus recognition process was successfully implemented.
Customized moodle-based learning management system for socially disadvantaged...journalBEEI
This study aims to develop Moodle-based LMS with customized learning content and modified user interface to facilitate pedagogical processes during covid-19 pandemic and investigate how teachers of socially disadvantaged schools perceived usability and technology acceptance. Co-design process was conducted with two activities: 1) need assessment phase using an online survey and interview session with the teachers and 2) the development phase of the LMS. The system was evaluated by 30 teachers from socially disadvantaged schools for relevance to their distance learning activities. We employed computer software usability questionnaire (CSUQ) to measure perceived usability and the technology acceptance model (TAM) with insertion of 3 original variables (i.e., perceived usefulness, perceived ease of use, and intention to use) and 5 external variables (i.e., attitude toward the system, perceived interaction, self-efficacy, user interface design, and course design). The average CSUQ rating exceeded 5.0 of 7 point-scale, indicated that teachers agreed that the information quality, interaction quality, and user interface quality were clear and easy to understand. TAM results concluded that the LMS design was judged to be usable, interactive, and well-developed. Teachers reported an effective user interface that allows effective teaching operations and lead to the system adoption in immediate time.
Understanding the role of individual learner in adaptive and personalized e-l...journalBEEI
Dynamic learning environment has emerged as a powerful platform in a modern e-learning system. The learning situation that constantly changing has forced the learning platform to adapt and personalize its learning resources for students. Evidence suggested that adaptation and personalization of e-learning systems (APLS) can be achieved by utilizing learner modeling, domain modeling, and instructional modeling. In the literature of APLS, questions have been raised about the role of individual characteristics that are relevant for adaptation. With several options, a new problem has been raised where the attributes of students in APLS often overlap and are not related between studies. Therefore, this study proposed a list of learner model attributes in dynamic learning to support adaptation and personalization. The study was conducted by exploring concepts from the literature selected based on the best criteria. Then, we described the results of important concepts in student modeling and provided definitions and examples of data values that researchers have used. Besides, we also discussed the implementation of the selected learner model in providing adaptation in dynamic learning.
Prototype mobile contactless transaction system in traditional markets to sup...journalBEEI
One way to prevent and reduce the spread of the covid-19 pandemic is through physical distancing program. This research aims to develop a prototype contactless transaction system using digital payment mechanisms and QR code technology that will be applied in traditional markets. The method used in the development of electronic market systems is a prototype approach. The application of QR code and digital payments are used as a solution to minimize money exchange contacts that are common in traditional markets. The results showed that the system built was able to accelerate and facilitate the buying and selling transaction process in traditional market environment. Alpha testing shows that all functional systems are running well. Meanwhile, beta testing shows that the user can very well accept the system that was built. The results of the study also show acceptance of the usefulness of the system being built, as well as the optimism of its users to be able to take advantage of this system both technologically and functionally, so its can be a part of the digital transformation of the traditional market to the electronic market and has become one of the solutions in reducing the spread of the current covid-19 pandemic.
Wireless HART stack using multiprocessor technique with laxity algorithmjournalBEEI
The use of a real-time operating system is required for the demarcation of industrial wireless sensor network (IWSN) stacks (RTOS). In the industrial world, a vast number of sensors are utilised to gather various types of data. The data gathered by the sensors cannot be prioritised ahead of time. Because all of the information is equally essential. As a result, a protocol stack is employed to guarantee that data is acquired and processed fairly. In IWSN, the protocol stack is implemented using RTOS. The data collected from IWSN sensor nodes is processed using non-preemptive scheduling and the protocol stack, and then sent in parallel to the IWSN's central controller. The real-time operating system (RTOS) is a process that occurs between hardware and software. Packets must be sent at a certain time. It's possible that some packets may collide during transmission. We're going to undertake this project to get around this collision. As a prototype, this project is divided into two parts. The first uses RTOS and the LPC2148 as a master node, while the second serves as a standard data collection node to which sensors are attached. Any controller may be used in the second part, depending on the situation. Wireless HART allows two nodes to communicate with each other.
Implementation of double-layer loaded on octagon microstrip yagi antennajournalBEEI
A double-layer loaded on the octagon microstrip yagi antenna (OMYA) at 5.8 GHz industrial, scientific and medical (ISM) Band is investigated in this paper. The double-layer consist of two double positive (DPS) substrates. The OMYA is overlaid with a double-layer configuration were simulated, fabricated and measured. A good agreement was observed between the computed and measured results of the gain for this antenna. According to comparison results, it shows that 2.5 dB improvement of the OMYA gain can be obtained by applying the double-layer on the top of the OMYA. Meanwhile, the bandwidth of the measured OMYA with the double-layer is 14.6%. It indicates that the double-layer can be used to increase the OMYA performance in term of gain and bandwidth.
The calculation of the field of an antenna located near the human headjournalBEEI
In this work, a numerical calculation was carried out in one of the universal programs for automatic electro-dynamic design. The calculation is aimed at obtaining numerical values for specific absorbed power (SAR). It is the SAR value that can be used to determine the effect of the antenna of a wireless device on biological objects; the dipole parameters will be selected for GSM1800. Investigation of the influence of distance to a cell phone on radiation shows that absorbed in the head of a person the effect of electromagnetic radiation on the brain decreases by three times this is a very important result the SAR value has decreased by almost three times it is acceptable results.
Exact secure outage probability performance of uplinkdownlink multiple access...journalBEEI
In this paper, we study uplink-downlink non-orthogonal multiple access (NOMA) systems by considering the secure performance at the physical layer. In the considered system model, the base station acts a relay to allow two users at the left side communicate with two users at the right side. By considering imperfect channel state information (CSI), the secure performance need be studied since an eavesdropper wants to overhear signals processed at the downlink. To provide secure performance metric, we derive exact expressions of secrecy outage probability (SOP) and and evaluating the impacts of main parameters on SOP metric. The important finding is that we can achieve the higher secrecy performance at high signal to noise ratio (SNR). Moreover, the numerical results demonstrate that the SOP tends to a constant at high SNR. Finally, our results show that the power allocation factors, target rates are main factors affecting to the secrecy performance of considered uplink-downlink NOMA systems.
Design of a dual-band antenna for energy harvesting applicationjournalBEEI
This report presents an investigation on how to improve the current dual-band antenna to enhance the better result of the antenna parameters for energy harvesting application. Besides that, to develop a new design and validate the antenna frequencies that will operate at 2.4 GHz and 5.4 GHz. At 5.4 GHz, more data can be transmitted compare to 2.4 GHz. However, 2.4 GHz has long distance of radiation, so it can be used when far away from the antenna module compare to 5 GHz that has short distance in radiation. The development of this project includes the scope of designing and testing of antenna using computer simulation technology (CST) 2018 software and vector network analyzer (VNA) equipment. In the process of designing, fundamental parameters of antenna are being measured and validated, in purpose to identify the better antenna performance.
Transforming data-centric eXtensible markup language into relational database...journalBEEI
eXtensible markup language (XML) appeared internationally as the format for data representation over the web. Yet, most organizations are still utilising relational databases as their database solutions. As such, it is crucial to provide seamless integration via effective transformation between these database infrastructures. In this paper, we propose XML-REG to bridge these two technologies based on node-based and path-based approaches. The node-based approach is good to annotate each positional node uniquely, while the path-based approach provides summarised path information to join the nodes. On top of that, a new range labelling is also proposed to annotate nodes uniquely by ensuring the structural relationships are maintained between nodes. If a new node is to be added to the document, re-labelling is not required as the new label will be assigned to the node via the new proposed labelling scheme. Experimental evaluations indicated that the performance of XML-REG exceeded XMap, XRecursive, XAncestor and Mini-XML concerning storing time, query retrieval time and scalability. This research produces a core framework for XML to relational databases (RDB) mapping, which could be adopted in various industries.
Key performance requirement of future next wireless networks (6G)journalBEEI
Given the massive potentials of 5G communication networks and their foreseeable evolution, what should there be in 6G that is not in 5G or its long-term evolution? 6G communication networks are estimated to integrate the terrestrial, aerial, and maritime communications into a forceful network which would be faster, more reliable, and can support a massive number of devices with ultra-low latency requirements. This article presents a complete overview of potential 6G communication networks. The major contribution of this study is to present a broad overview of key performance indicators (KPIs) of 6G networks that cover the latest manufacturing progress in the environment of the principal areas of research application, and challenges.
Noise resistance territorial intensity-based optical flow using inverse confi...journalBEEI
This paper presents the use of the inverse confidential technique on bilateral function with the territorial intensity-based optical flow to prove the effectiveness in noise resistance environment. In general, the image’s motion vector is coded by the technique called optical flow where the sequences of the image are used to determine the motion vector. But, the accuracy rate of the motion vector is reduced when the source of image sequences is interfered by noises. This work proved that the inverse confidential technique on bilateral function can increase the percentage of accuracy in the motion vector determination by the territorial intensity-based optical flow under the noisy environment. We performed the testing with several kinds of non-Gaussian noises at several patterns of standard image sequences by analyzing the result of the motion vector in a form of the error vector magnitude (EVM) and compared it with several noise resistance techniques in territorial intensity-based optical flow method.
Modeling climate phenomenon with software grids analysis and display system i...journalBEEI
This study aims to model climate change based on rainfall, air temperature, pressure, humidity and wind with grADS software and create a global warming module. This research uses 3D model, define, design, and develop. The results of the modeling of the five climate elements consist of the annual average temperature in Indonesia in 2009-2015 which is between 29oC to 30.1oC, the horizontal distribution of the annual average pressure in Indonesia in 2009-2018 is between 800 mBar to 1000 mBar, the horizontal distribution the average annual humidity in Indonesia in 2009 and 2011 ranged between 27-57, in 2012-2015, 2017 and 2018 it ranged between 30-60, during the East Monsoon, the wind circulation moved from northern Indonesia to the southern region Indonesia. During the west monsoon, the wind circulation moves from the southern part of Indonesia to the northern part of Indonesia. The global warming module for SMA/MA produced is feasible to use, this is in accordance with the value given by the validate of 69 which is in the appropriate category and the response of teachers and students through a 91% questionnaire.
An approach of re-organizing input dataset to enhance the quality of emotion ...journalBEEI
The purpose of this paper is to propose an approach of re-organizing input data to recognize emotion based on short signal segments and increase the quality of emotional recognition using physiological signals. MIT's long physiological signal set was divided into two new datasets, with shorter and overlapped segments. Three different classification methods (support vector machine, random forest, and multilayer perceptron) were implemented to identify eight emotional states based on statistical features of each segment in these two datasets. By re-organizing the input dataset, the quality of recognition results was enhanced. The random forest shows the best classification result among three implemented classification methods, with an accuracy of 97.72% for eight emotional states, on the overlapped dataset. This approach shows that, by re-organizing the input dataset, the high accuracy of recognition results can be achieved without the use of EEG and ECG signals.
Parking detection system using background subtraction and HSV color segmentationjournalBEEI
Manual system vehicle parking makes finding vacant parking lots difficult, so it has to check directly to the vacant space. If many people do parking, then the time needed for it is very much or requires many people to handle it. This research develops a real-time parking system to detect parking. The system is designed using the HSV color segmentation method in determining the background image. In addition, the detection process uses the background subtraction method. Applying these two methods requires image preprocessing using several methods such as grayscaling, blurring (low-pass filter). In addition, it is followed by a thresholding and filtering process to get the best image in the detection process. In the process, there is a determination of the ROI to determine the focus area of the object identified as empty parking. The parking detection process produces the best average accuracy of 95.76%. The minimum threshold value of 255 pixels is 0.4. This value is the best value from 33 test data in several criteria, such as the time of capture, composition and color of the vehicle, the shape of the shadow of the object’s environment, and the intensity of light. This parking detection system can be implemented in real-time to determine the position of an empty place.
Quality of service performances of video and voice transmission in universal ...journalBEEI
The universal mobile telecommunications system (UMTS) has distinct benefits in that it supports a wide range of quality of service (QoS) criteria that users require in order to fulfill their requirements. The transmission of video and audio in real-time applications places a high demand on the cellular network, therefore QoS is a major problem in these applications. The ability to provide QoS in the UMTS backbone network necessitates an active QoS mechanism in order to maintain the necessary level of convenience on UMTS networks. For UMTS networks, investigation models for end-to-end QoS, total transmitted and received data, packet loss, and throughput providing techniques are run and assessed and the simulation results are examined. According to the results, appropriate QoS adaption allows for specific voice and video transmission. Finally, by analyzing existing QoS parameters, the QoS performance of 4G/UMTS networks may be improved.
Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
2. Bulletin of Electr Eng and Inf ISSN: 2302-9285
Heat distribution under microwave heating treatment (Siti Zulaika Abdul Nyzam)
137
Figure 1. Rice weevil
In microwave heating treatment, it is supposed to shorten the treatment time to control the insect.
With the accurate treatment time, temperature and power, it can maintain the quality of the product. It also
can disrupt the ability of the adult's insect to reproduce and also can kill the eggs inside the commodities. The
wave can penetrate through the commodities as microwave energy is able to heat the product volumetrically
which mean that the product placed under the radiation will directly absorb the energy and transform it to
heat as their particles collide vigorously with one another [8]. This advantage also will help to reduce the
number of the insect within the storage and by the time the product reaches the customer, the product can be
used and stored for a longer time.
However, microwave heating treatment has some complication in heat distribution as it does not
heat the commodities uniformly [9]. Physically, it can be seen through thermal image by the existence of a
hot spot and cold spot. This non-uniformity heating can allow the adult insect to escape from the hot spot to
the cold spot to avoid being killed by the treatment [10]. Uniform heat distribution is important to ensure the
product receive optimum treatment and at once, increase the effectiveness of this method to achieve its main
aim which is to control the rice insect in for storage purpose.
Heat distribution has been holding back the full potential of microwave heating to be applied in the
industry. The temperature distribution varies from one product to another as every material has different
electrical properties such as the composition, moisture content and the applied frequency during the treatment
[11]. The density of the material also is one of the notable factors because the different amount of mass has a
different response to the electromagnetic field. Uneven heating is observed by the appearance of the hot spot
and cold spot which can be visualized to human's eye by using a thermal camera. The temperature difference
can be obtained by using a thermocouple.
The influence of cavity mode in microwave heating was investigated by Thomas Ohlsson in 1992
[12]. There are two polarizations in microwave field which are transversal electrical and transversal
magnetic. They were discussed as a factor of overheating effect in food's shape as it was found that strong
center heating in food with the spherical and cylindrical geometry. This later was agreed by Juming Tang is
in his study of quarantine treatment of cherries using 915 MHz [13]. Also, the study of the overheating at the
edge and the corner of the sample in wedge-shape food. It was concluded that TM should dominate the oven
as with minimum reflection, high angle of incidences can lead to optimum power utilization and improve the
possibilities of uniform heating.
In 2006, Manickavasagan found the non-uniform of in grains under microwave treatment [14]. The
treatment was using microwave dyer with the frequency of 2450 MHz involving barley, canola, and wheat.
The average temperature within the surface was found highest in barley which was 72.5 to 117.5°C, followed
by wheat and canola which were 73.4 to 108.8°C and 65.9 to 97.5°C respectively. It is crossed with
Vadivambal’s result that recorded temperature difference between the hot spot and cold spot of 70°C
for barley.
In 2013, Ameziane et al developed a model of heat transfer to control insects specifically focus on
larva and egg stage in date [15]. The treatment was analyzed for conventional heating, microwave heating of
915 MHz and both combined. The temperature measurement was taken on the surface and inside of the date
to increase the reliability of result considering limiting phenomena such as the heterogeneity of temperature
in the material, coupling process between heat transfer and mortality of insects and the optimization of
various treatment condition. It was suggested that hot air circulation must be provided as the larva heating
was reduced due to heat transfer and eggs stage insect did not reach a sufficient temperature to be killed.
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In 2014, Fuji et al have conducted an evaluation of insect expulsion by using wheat sample under
microwave treatment for disinfestation purpose [16]. Two type of 3-D treatment was studied which were the
continuous treatment (3DCT) and intermittently treatment (3DIT). The difference between this two methods
was the sample was kept inside the microwave oven for 5 minutes after the first treatment before continued
with next treatment time. 3DCT was preferred over 3DIT as it 3DCT generate more uniform distribution as
the treatment did not significantly reduce the moisture content of wheat. It was concluded as so based on the
theory of, under the same treatment time, high moisture content reduced the temperature difference which
with low temperature difference, high chance of uniform heating can be achieved.
This paper presents the heat distribution within rice in a square shape since it may vary according to
its shape, height or the ability of the sample itself to couple well with the heating of the microwave. The
center and each corner of the sample need to be observed and their temperature needs to be recorded to note
whether it afford to kill the rice weevil at their points.
2. METHODOLOGY
In this experiment, microwave heating experiment in rice is using domestic Sharp Microwave Oven
model R352ZS with the frequency of 2.4 GHz and output power of 900W. FLIR EX-Series Infrared Camera
is used to see the thermal image to evaluate the hot spot and cold spot occurred in the sample. The room
temperature and humidity are monitored by using DHT22 to ensure the environment condition is constant
while the experiment is conducted. The samples are local Malaysian rice paddy and 15 adult rice weevil
specifically from Sitophilus Oryzae species.
Figure 2. Measurement setup
2.1. Preparation of sample
The rice paddy is put inside a square plastic container with a height of 2 cm. The rice is already
infested by female adult rice weevil for at least a month. With that period, it can be assumed that half of the
rice sample contain eggs or even larvae. After the treatment is done, these samples are kept and observed for
how many adult rice weevil will emerge from the treated sample. This will determine the mortality of the egg
stage. The adult's rice weevil used in the experiment are cultured properly since the beginning and aged 2
weeks old. 15 of them are buried randomly within the rice paddy.
2.2. Microwave heating treatment
The experiment is carried out by placing the container samples into the microwave oven. Each
treatment is matched to the treatment time and different power level starting at 50 and 80 second and 900 to
540 W. Maximum temperature range for each power level microwave oven can be seen in Table 1. Output
power at different power level is calculated as the ratio of percentage power level to the output power of the
microwave applicator.
Once the treatment time is up, the sample will be taken out and the image will be captured
immediately by using the thermal camera. By this image, the cold spot and hot spot can be evaluated. After
one minute, the insects will be checked to see whether they survive treatment or not by soft brushing on their
body. The rice sample will be kept safe to evaluate the mortality of the egg stage.
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Table 1. The temperature corresponding to the output power
Power Level/P Output Power/W Maximum Temperature/°C
60 540 65
100 900 95
3. RESULTS AND DISCUSSION
The treatments are running with the treatment time of 50 seconds with the power of 540W(treatment
A) and 900W (treatment B) and treatment time of 80 seconds with the power of 540W (treatment C) and
900W (treatment D). Every treatment is repeated with 10 samples.
3.1. Hot spot
The hot spot and cold spot are captured by using FLIR EX Series thermal camera. It shows that the
hot spots are focused in the center and cover most of the sample with the size of the container as shown as in
Figure 3. With the well-distributed heat, the highest temperature represented by red color in the thermal
image that causes high mortality is 82.5°C. At the edge and the corner of the container, the temperature
recorded is medium with the range of 35 to 43°C.
Figure 3. Thermal image of the sample
3.2. Mortality of rice weevil
The number of dead adult rice weevil from each sample are calculated and the mortality is shown in
Table 2. The number of dead rice weevil was killed by the microwave energy are compared between the
same treatment time with different power by using the ANOVA test. By the criteria, the difference in each
pair of treatments are statistically significant at the 95% confidence level (p<0.05) and tabulated in Table 3.
These values show that the treatments design does affect the mortality of adult rice weevil. High power with
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high treatment time cause high mortality when compared to low power with high treatment time only cause
low mortality but the quality of the rice needs to be considered to maintain its nutrition.
Table 2. Mortality of adult rice weevil
Treatment Mortality of Adult Rice Weevil/% Temperature/°C
A 32 51.3
B 87 73.2
C 41 56.4
D 93 82.5
Table 3. ANOVA t-Test results of microwave heating treatment
ANOVA t-Test
Treatment
A B C D
Mean 4.8 6.1 13.1 13.9
Standard Deviation 0.63 0.99 1.37 0.74
Standard Error Mean 0.20 0.31 0.43 0.23
4. CONCLUSION
From this experiment, the microwave heat distribution can be seen to conquer the center of the
sample. The minimum temperature as seen as the yellow color through the thermal camera was observed at
the edge of the square container. Also, it can be concluded that the treatment with high power and high
treatment time achieve high mortality of rice weevil. Nevertheless, the rice paddy needs to be tested to ensure
its quality is maintained. The occurrence of hot spot is found covering most of the sample surface with this
specific size of the container. The highest mortality rate is 93% achieved at treatment of 80 seconds with
900W of output power with temperature at 82.5°C, followed by 87% in treatment of time 50 seconds and
900W at 73.2°C, 41% in treatment with time 80 seconds and 540W at 56.4°C and 32% in treatment of time
50 seconds and 540W at 51.3°C. High output power can cause high mortality and maintain the quality of rice
paddy if it is matched with suitable treatment time. This experiment shows that microwave heating treatment
has future in disinfestation of insect.
ACKNOWLEDGEMENTS
The authors would like to thank the Ministry of Education (MOE) Malaysia for the funding under
the Fundamental Research Grant Scheme (FRGS 9003-00597) with reference code:
FRGS/1/2016/TK04/UNIMAP/02/6.
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BIOGRAPHIES OF AUTHORS
Siti Zulaika Abdul Nyzam is currently a postgraduate student in Universiti Malaysia Perlis
(UniMAP). She graduated in Bachelor Degree of Communication Engineering in UniMAP back
in October 2016 from School Computer and Communication Engineering.
Rosemizi Abd Rahim received the Diploma in Electrical Engineering from the Institut Teknologi
Mara, Malaysia (1997), B.Eng. in Electrical from the Universiti Teknologi Mara, Malaysia
(2000), the M.Sc. degree in Electronic System Design Engineering from the Universiti Sains
Malaysia (2004), and his Ph.D. in Communication Engineering from the Universiti Malaysia
Perlis (2013). From 2000 to 2004, he was a failure analysis engineer at a multinational electronic
manufacturing company in Penang, Malaysia. Then, since 2005 he is with the Universiti
Malaysia Perlis as an academician. His research interest includes the analysis and development
of new sources of energy harvesting system and techniques, antenna design and microwave
heating. He is a Professional Engineer (Electrical) and Certified Electrical Energy Manager.