William Adebisi Olosunde - Academia.edu (original) (raw)

Papers by William Adebisi Olosunde

International journal of physical sciences, Mar 31, 2024

American Journal of Geospatial Technology, Sep 29, 2023

American Journal of Food Science and Technology, Sep 27, 2023

Zenodo (CERN European Organization for Nuclear Research), Jun 29, 2023

Inaccurate estimation of nuts volume in a hopper may likely influence the design of some componen... more Inaccurate estimation of nuts volume in a hopper may likely influence the design of some components of palm nut processing system such as shaft, rotor, electric motor power, hopper supporting rods, etc. In an effort to address this challenge the voids/ spaces were considered as inherent in palm nuts when stored in a vessel. In this study, 5 kg of dried and ready to crack mixed varieties of palm nuts were grouped based on their minor diameter (1) as small size: 1 < 13.00 mm; medium size: 13.00 ≤ 1 < 17.00 mm and large size: 1 ≥ 17.00 mm for each size range, nuts were randomly selected and each range placed into different 100 ml beaker. Toluene was poured into each of the beaker until the nuts at the top were tipped covered. The volume of toluene () used in filling to the tip of the top nuts was quantified as void / space unoccupied by the nuts. The experiment was repeated using 150, 200, 250 and 300 ml beaker respectively. Each experiment was carried out in duplicate and their mean and standard deviation computed. Result showed that voidage of palm nut in a processing vessel was 45 ± 4%. This designates that the actual volume of palm nuts occupied in a processing vessel such as hopper would likely be 55% of its container's volume. Hence, could be used in the design of storage facilities such as silo, bin, etc.

American Journal of Interdisciplinary Research and Innovation, Aug 23, 2023

International Journal of Ambient Energy, 2018

In this study, drying behavior of medical plants as fresh sweet basil, parsley and dill leaves in... more In this study, drying behavior of medical plants as fresh sweet basil, parsley and dill leaves in vacuum heat pump dryer was investigated. Drying experiments were conducted at the vacuum pressure of 0.6 bar and the drying temperatures of 36 and 46 o C. Five thin layer drying models namely Henderson and Pabis model, Logarithmic model, Two-term model, Modified page equation model and Lewis model to estimate moisture ratio of medical plants were used. Different mathematical drying models were compared according to their root mean square error (RMSE), coefficient of determination (R 2), and reduced chi-square (). For sweet basil, parsley and dill leaves, the logarithmic model, the two-term model and the Henderson and Pabis model showed better fit to the experimental data compared to other models, respectively.

Journal of Engineering Research and Reports

In an attempt to produce glucose from locally sourced materials to boost glucose syrup production... more In an attempt to produce glucose from locally sourced materials to boost glucose syrup production and other applications, the optimum reaction velocity which enzyme becomes saturated with the substrate was investigated. In this study, cassava starch (substrate) and glucoamylase (enzyme) from rice were sourced and prepared. The time course of the enzyme hydrolysis was studied at pH 5 and temperature of 400C as optimum conditions. The hydrolysis was carried out at various substrate concentrations. The time course of the reaction for glucose production was monitored at 10 minutes interval for a period of one hour. The glucose concentration produced was plotted against reaction time to evaluate the optimum glucose amount and its corresponding substrate concentration. The reaction velocity was then computed. Also, the experimental data were fitted into Michaelis-Menten model using Statistical Package for Social Scientists to compare the yield of glucose. Results showed optimum yield of g...

Global Journal of Engineering and Technology Advances

In order to ensure that most of the nuts discharged vertically from the rotor do not escape uncra... more In order to ensure that most of the nuts discharged vertically from the rotor do not escape uncracked through the cracked nut mixture outlet; an investigation into optimal angle for palm nut cracker bevel plate assembly required to increase efficiency of the cracking process was carried out at three different feed gates. In this study, the cracked nut mixture outlet at the cracking drum of an existing centrifugal palm nut cracker was modified to include bevel plate having adjustable angle of inclination. Dried and ready to crack mixed varieties (Pisifera, Tenera and Dura) of palm nuts were sourced and moisture content determined using oven dry method. The nuts (18.6% moisture content wet basis) were subjected to impact at different angles ( = 90, 55, 50, 45, 40, 35, 30, 25 and 200) of bevel plate per feed gate aperture area, A (18, 27 and 36 cm2) of the modified palm nut cracker. The = 90o was full opening of the cracked nut mixture outlet of the existing nut cracker. For each exper...

International Journal of Trend in Scientific Research and Development, Apr 30, 2019

In cracking palm nuts by application of appropriate impact energy, one of the predominant factors... more In cracking palm nuts by application of appropriate impact energy, one of the predominant factors that would enhance the release of either high percentage of whole or split kernels is the percentage level of moisture content in the nuts. The split kernels encourage rancidity of oil since the oily surface of the kernel is exposed to environmental influence. There is therefore need to study the absorption of water in dried palm nuts as a pointer to condition dried nuts to moisture content range that would enhance the production of whole kernels. In this study, dried Dura and Tenera palm nuts varieties were obtained from a palm oil processing mill, classified based on their minor diameter into three size ranges of small, medium and large sizes. These nuts were further dried to bone dry mass followed by immersion of each size range of nuts into different vessels containing water. The rate of water absorption was monitored at 3-hourly intervals. The data generated were analyzed. The result showed that the rate of water absorption per nut unit area had similar curves pattern as the drying curve established for palm nuts. Models for water absorption process involving the dried palm nut was developed based on basic underlying principles and data generated from experimental runs. The models were then validated; and found to be very useful in describing the water absorption process per nut unit area in a given time; and predicting moisture content of bone dry mass of nut soaked in water and kept at room temperature.

This is a self-archived version of an original article. This version may differ from the original... more This is a self-archived version of an original article. This version may differ from the original in pagination and typographic details.

American Journal of Innovation in Science and Engineering

The rotor of a palm nut cracker must be designed in such a way as to overcome friction, wears, th... more The rotor of a palm nut cracker must be designed in such a way as to overcome friction, wears, the collision of nuts, etc. during nut cracking. Thus, there is a need to find the efficiency (rotor operating factor) Kf of the rotor and then used it to obtain the actual operating rotor speed in revolution per minute (rpm) for effective operation. In this study, masses of palm nuts (ḿ), its exit velocity from the rotor disc (v), rotor radius (r), axial dimensions, and energy generated due to friction, sound, heat, etc. (Ef), palm nut translational kinetic the energy (KEtrans), energy released per unit nut (Q) and inverse of theoretical rotor speed (Nt-1) were used based on some existing models. Plots of r against Nt-1 to determine the slope and thereafter evaluate Kf were carried out. The effect of ḿ on Kf was assessed using Analysis of Variance at 5% level probability. The results showed that the mean Kf was 0.76 and was not affected by varying ḿ since the calculated probability was 0....

Journal of Engineering Research and Reports

In an effort to easily use the Orua Antia’s energy and power equations to determine the minimum c... more In an effort to easily use the Orua Antia’s energy and power equations to determine the minimum comminution energy and power requirements of a given material; the mass Index being a constant in these equations is necessary to be provided for materials that could be subjected to comminution. In this study, the mass indices of some selected food materials such as cassava, yam, crayfish, beans and soybeans which finds applications in food industries were evaluated using static impact force technique coupled with graphical and computational approaches. In graphical method Equation 17 obtained from energy expression for mass-size reduction Equation 14 was employed; while Equation 16 which is a combination of Equation 14 and the potential energy Equation 15 was used in the computational method. Also the relative errors of mass indices obtained from these two methods were evaluated. Results showed that computational or graphical method could be used to obtain the mass index of each selecte...

Journal of Agricultural Science and Technology A, 2016

Handroanthus heptaphyllus (botany synonymy Tabebuia heptaphylla) is considered to have very impor... more Handroanthus heptaphyllus (botany synonymy Tabebuia heptaphylla) is considered to have very important economical, ornamental and medicinal value. It is included in the Bignoniaceae botanical family, whose multiplication is quite solely carried by seeds. Forest dispersion elements, i.e., the seeds, deserve a deep understanding on their physiological performance. The objective of this research work was to determine the optimum seed moisture content for laser interaction in biospeckle tests, which is based on laser interferometry. Seeds were hydrated to the level of 69% and then divided into four subsamples, i.e., (1) seeds without teguments, (2) seeds with tegument, (3) seeds without teguments frozen at 0 °C and (4) seeds with teguments frozen at 0 °C. The four subsamples were then separated into five moisture level groups (28%, 35%, 54%, 63% and 69%) and exposed to the laser. The biospeckle phenomenon quantification was carried out by means of the moment of inertia (MI) approach. A positive correlation between MI and seed moisture content was obtained. It was also verified that seed moisture content between 28% and 54% showed better interaction with the laser. The results are important for the application of the biospeckle technique as a possible tool to assess the quality of purple ipê seeds.

Global Journal of Engineering and Technology Advances

Inaccurate estimation of nuts volume in a hopper may likely influence the design of some componen... more Inaccurate estimation of nuts volume in a hopper may likely influence the design of some components of palm nut processing system such as shaft, rotor, electric motor power, hopper supporting rods, etc. In an effort to address this challenge the voids/ spaces were considered as inherent in palm nuts when stored in a vessel. In this study, 5 kg of dried and ready to crack mixed varieties of palm nuts were grouped based on their minor diameter (d_1) as small size: d_1 < 13.00 mm; medium size: 13.00 ≤ d_1 < 17.00 mm and large size: d_1 ≥ 17.00 mm for each size range, nuts were randomly selected and each range placed into different 100 ml beaker. Toluene was poured into each of the beaker until the nuts at the top were tipped covered. The volume of toluene (V_toluene) used in filling to the tip of the top nuts was quantified as void / space unoccupied by the nuts. The experiment was repeated using 150, 200, 250 and 300 ml beaker respectively. Each experiment was carried out in dup...

American Journal of Agricultural Science, Engineering, and Technology

Hibiscus sabdarrifa are cultivated and consumed as tea, whereas other hibiscus varieties are plan... more Hibiscus sabdarrifa are cultivated and consumed as tea, whereas other hibiscus varieties are planted for the fibers they produce. Hibiscus sabdariffa known as roselle, is one of the underexploited food crops with nutritional and food industry processing potential. Thus, this study was undertaken to determine the effects of different drying methods (sun, solar and oven drying) and drying kinetics on the proximate composition of dried calyx (Proximate and Mineral composition) using AOAC Standard. The data obtained from this study was statistically analyzed using Tukey HSD (Tukey Honest Significant Difference). The values of the model constant and other Statistical parameters for moisture ratio were obtained. The two-term exponential model had the highest R2 and the lowest x2 and RMSE value. The model constants, the R2, x2 and RMSE for each model were obtained. The page model had the highest R2 and lowest x2 and RMSE and was selected as the best fit model for describing the drying kine...

European Journal of Engineering and Technology Research

Soursop has proven to be of high economic importance and contains some essential nutrients which ... more Soursop has proven to be of high economic importance and contains some essential nutrients which are needed in the human body for heathy living. The seeds contain oil of about 24.86%. The oil is of high quality and possesses good characteristics that can be used as feedstock in food industries and in many other industrial applications. This research study was focused on investigating the proximate composition, mechanical and chemical properties of soursop seeds for industrial uses and as a potential supplement for feedstock. The data obtained from this study was statistically analysed using Tukey HSD. The results for the proximate analyses of soursop seeds were found to be high for all moisture content levels (19.10%, 19.82%, 20.67%, 21.25% and 23.15%). The samples with 30% moisture contain level contained the highest level of fat. Carbohydrate content in the sample was found to be low for all moisture content level (3.21%, 3.46%, 3.79%, 4.23% and 44.76%). The relative density value...

Global Journal of Engineering and Technology Advances

The drying of seafood could ensure increase in life span, minimization of storage space, ease of ... more The drying of seafood could ensure increase in life span, minimization of storage space, ease of transportation, etc of the product. It is therefore, necessary to dry and know when to stop drying at an appropriate moisture content that would minimize associated challenges in promoting food security. In this study, selected sea foods, such as prawn and oyster were obtained and then dried to determine their drying mass constants using model equation developed based on basic drying principle. The value of the constants obtained would provide data bank to facilitates prediction of mass of the drying material at given time that would correspond to any desired moisture content, provided the initial moisture content of the material is known. The plots of moisture content against drying time, drying rate against drying time and moisture content versus were carried out. It was observed that increase in size of the drying material increased the drying time. Moreover, the drying rate curve res...

This paper attempts to model the effect of some physical properties such as mass, shell thickness... more This paper attempts to model the effect of some physical properties such as mass, shell thickness and dimensions of Tenera nuts on cracking energy. The relationship would aid in the design of a nut cracker for effective cracking of the nuts to release high percentage of whole kernels. In this study, dried palm nuts of Tenera variety having moisture content of 4.84% d.bwere used. These nuts were classified into six size ranges. Each nut in each size range had it mass weighed; minor diameter, intermediate diameter and major diameter measured and recorded before it was subjected to impact. The shell thickness of each nut that cracked and releases whole kernel after impact in a Test rig was also measured and recorded. Result revealed that nut mass ( m

Agricultural Engineering International: The CIGR Journal, 2016

Evaporative cooling occurs when warm and unsaturated air is blown across a wet surface. This stud... more Evaporative cooling occurs when warm and unsaturated air is blown across a wet surface. This study reviews the development of simulation software as a research tool for designing evaporative cooling systems. The simulation incorporates information concerning the effect of the cooling pad length, cooling pad height, cooling pad thickness, air velocity, water flow rate, water temperature, water to air mass flow rate, and number of cooling pad segments in terms of the performance efficiency of the cooling system. The software rapidly produced model data, which was subjected to further analysis for verification and validation during the testing stage. The modelled and experimental data of the saturation efficiency were compared using 4 of the most important statistical parameters, based on a paired sample t-test of an equal variance assumption. The results indicated that there was no significant difference between the software generated data and the experimental data of the Saturation E...

International journal of physical sciences, Mar 31, 2024

American Journal of Geospatial Technology, Sep 29, 2023

American Journal of Food Science and Technology, Sep 27, 2023

Zenodo (CERN European Organization for Nuclear Research), Jun 29, 2023

Inaccurate estimation of nuts volume in a hopper may likely influence the design of some componen... more Inaccurate estimation of nuts volume in a hopper may likely influence the design of some components of palm nut processing system such as shaft, rotor, electric motor power, hopper supporting rods, etc. In an effort to address this challenge the voids/ spaces were considered as inherent in palm nuts when stored in a vessel. In this study, 5 kg of dried and ready to crack mixed varieties of palm nuts were grouped based on their minor diameter (1) as small size: 1 < 13.00 mm; medium size: 13.00 ≤ 1 < 17.00 mm and large size: 1 ≥ 17.00 mm for each size range, nuts were randomly selected and each range placed into different 100 ml beaker. Toluene was poured into each of the beaker until the nuts at the top were tipped covered. The volume of toluene () used in filling to the tip of the top nuts was quantified as void / space unoccupied by the nuts. The experiment was repeated using 150, 200, 250 and 300 ml beaker respectively. Each experiment was carried out in duplicate and their mean and standard deviation computed. Result showed that voidage of palm nut in a processing vessel was 45 ± 4%. This designates that the actual volume of palm nuts occupied in a processing vessel such as hopper would likely be 55% of its container's volume. Hence, could be used in the design of storage facilities such as silo, bin, etc.

American Journal of Interdisciplinary Research and Innovation, Aug 23, 2023

International Journal of Ambient Energy, 2018

In this study, drying behavior of medical plants as fresh sweet basil, parsley and dill leaves in... more In this study, drying behavior of medical plants as fresh sweet basil, parsley and dill leaves in vacuum heat pump dryer was investigated. Drying experiments were conducted at the vacuum pressure of 0.6 bar and the drying temperatures of 36 and 46 o C. Five thin layer drying models namely Henderson and Pabis model, Logarithmic model, Two-term model, Modified page equation model and Lewis model to estimate moisture ratio of medical plants were used. Different mathematical drying models were compared according to their root mean square error (RMSE), coefficient of determination (R 2), and reduced chi-square (). For sweet basil, parsley and dill leaves, the logarithmic model, the two-term model and the Henderson and Pabis model showed better fit to the experimental data compared to other models, respectively.

Journal of Engineering Research and Reports

In an attempt to produce glucose from locally sourced materials to boost glucose syrup production... more In an attempt to produce glucose from locally sourced materials to boost glucose syrup production and other applications, the optimum reaction velocity which enzyme becomes saturated with the substrate was investigated. In this study, cassava starch (substrate) and glucoamylase (enzyme) from rice were sourced and prepared. The time course of the enzyme hydrolysis was studied at pH 5 and temperature of 400C as optimum conditions. The hydrolysis was carried out at various substrate concentrations. The time course of the reaction for glucose production was monitored at 10 minutes interval for a period of one hour. The glucose concentration produced was plotted against reaction time to evaluate the optimum glucose amount and its corresponding substrate concentration. The reaction velocity was then computed. Also, the experimental data were fitted into Michaelis-Menten model using Statistical Package for Social Scientists to compare the yield of glucose. Results showed optimum yield of g...

Global Journal of Engineering and Technology Advances

In order to ensure that most of the nuts discharged vertically from the rotor do not escape uncra... more In order to ensure that most of the nuts discharged vertically from the rotor do not escape uncracked through the cracked nut mixture outlet; an investigation into optimal angle for palm nut cracker bevel plate assembly required to increase efficiency of the cracking process was carried out at three different feed gates. In this study, the cracked nut mixture outlet at the cracking drum of an existing centrifugal palm nut cracker was modified to include bevel plate having adjustable angle of inclination. Dried and ready to crack mixed varieties (Pisifera, Tenera and Dura) of palm nuts were sourced and moisture content determined using oven dry method. The nuts (18.6% moisture content wet basis) were subjected to impact at different angles ( = 90, 55, 50, 45, 40, 35, 30, 25 and 200) of bevel plate per feed gate aperture area, A (18, 27 and 36 cm2) of the modified palm nut cracker. The = 90o was full opening of the cracked nut mixture outlet of the existing nut cracker. For each exper...

International Journal of Trend in Scientific Research and Development, Apr 30, 2019

In cracking palm nuts by application of appropriate impact energy, one of the predominant factors... more In cracking palm nuts by application of appropriate impact energy, one of the predominant factors that would enhance the release of either high percentage of whole or split kernels is the percentage level of moisture content in the nuts. The split kernels encourage rancidity of oil since the oily surface of the kernel is exposed to environmental influence. There is therefore need to study the absorption of water in dried palm nuts as a pointer to condition dried nuts to moisture content range that would enhance the production of whole kernels. In this study, dried Dura and Tenera palm nuts varieties were obtained from a palm oil processing mill, classified based on their minor diameter into three size ranges of small, medium and large sizes. These nuts were further dried to bone dry mass followed by immersion of each size range of nuts into different vessels containing water. The rate of water absorption was monitored at 3-hourly intervals. The data generated were analyzed. The result showed that the rate of water absorption per nut unit area had similar curves pattern as the drying curve established for palm nuts. Models for water absorption process involving the dried palm nut was developed based on basic underlying principles and data generated from experimental runs. The models were then validated; and found to be very useful in describing the water absorption process per nut unit area in a given time; and predicting moisture content of bone dry mass of nut soaked in water and kept at room temperature.

This is a self-archived version of an original article. This version may differ from the original... more This is a self-archived version of an original article. This version may differ from the original in pagination and typographic details.

American Journal of Innovation in Science and Engineering

The rotor of a palm nut cracker must be designed in such a way as to overcome friction, wears, th... more The rotor of a palm nut cracker must be designed in such a way as to overcome friction, wears, the collision of nuts, etc. during nut cracking. Thus, there is a need to find the efficiency (rotor operating factor) Kf of the rotor and then used it to obtain the actual operating rotor speed in revolution per minute (rpm) for effective operation. In this study, masses of palm nuts (ḿ), its exit velocity from the rotor disc (v), rotor radius (r), axial dimensions, and energy generated due to friction, sound, heat, etc. (Ef), palm nut translational kinetic the energy (KEtrans), energy released per unit nut (Q) and inverse of theoretical rotor speed (Nt-1) were used based on some existing models. Plots of r against Nt-1 to determine the slope and thereafter evaluate Kf were carried out. The effect of ḿ on Kf was assessed using Analysis of Variance at 5% level probability. The results showed that the mean Kf was 0.76 and was not affected by varying ḿ since the calculated probability was 0....

Journal of Engineering Research and Reports

In an effort to easily use the Orua Antia’s energy and power equations to determine the minimum c... more In an effort to easily use the Orua Antia’s energy and power equations to determine the minimum comminution energy and power requirements of a given material; the mass Index being a constant in these equations is necessary to be provided for materials that could be subjected to comminution. In this study, the mass indices of some selected food materials such as cassava, yam, crayfish, beans and soybeans which finds applications in food industries were evaluated using static impact force technique coupled with graphical and computational approaches. In graphical method Equation 17 obtained from energy expression for mass-size reduction Equation 14 was employed; while Equation 16 which is a combination of Equation 14 and the potential energy Equation 15 was used in the computational method. Also the relative errors of mass indices obtained from these two methods were evaluated. Results showed that computational or graphical method could be used to obtain the mass index of each selecte...

Journal of Agricultural Science and Technology A, 2016

Handroanthus heptaphyllus (botany synonymy Tabebuia heptaphylla) is considered to have very impor... more Handroanthus heptaphyllus (botany synonymy Tabebuia heptaphylla) is considered to have very important economical, ornamental and medicinal value. It is included in the Bignoniaceae botanical family, whose multiplication is quite solely carried by seeds. Forest dispersion elements, i.e., the seeds, deserve a deep understanding on their physiological performance. The objective of this research work was to determine the optimum seed moisture content for laser interaction in biospeckle tests, which is based on laser interferometry. Seeds were hydrated to the level of 69% and then divided into four subsamples, i.e., (1) seeds without teguments, (2) seeds with tegument, (3) seeds without teguments frozen at 0 °C and (4) seeds with teguments frozen at 0 °C. The four subsamples were then separated into five moisture level groups (28%, 35%, 54%, 63% and 69%) and exposed to the laser. The biospeckle phenomenon quantification was carried out by means of the moment of inertia (MI) approach. A positive correlation between MI and seed moisture content was obtained. It was also verified that seed moisture content between 28% and 54% showed better interaction with the laser. The results are important for the application of the biospeckle technique as a possible tool to assess the quality of purple ipê seeds.

Global Journal of Engineering and Technology Advances

Inaccurate estimation of nuts volume in a hopper may likely influence the design of some componen... more Inaccurate estimation of nuts volume in a hopper may likely influence the design of some components of palm nut processing system such as shaft, rotor, electric motor power, hopper supporting rods, etc. In an effort to address this challenge the voids/ spaces were considered as inherent in palm nuts when stored in a vessel. In this study, 5 kg of dried and ready to crack mixed varieties of palm nuts were grouped based on their minor diameter (d_1) as small size: d_1 < 13.00 mm; medium size: 13.00 ≤ d_1 < 17.00 mm and large size: d_1 ≥ 17.00 mm for each size range, nuts were randomly selected and each range placed into different 100 ml beaker. Toluene was poured into each of the beaker until the nuts at the top were tipped covered. The volume of toluene (V_toluene) used in filling to the tip of the top nuts was quantified as void / space unoccupied by the nuts. The experiment was repeated using 150, 200, 250 and 300 ml beaker respectively. Each experiment was carried out in dup...

American Journal of Agricultural Science, Engineering, and Technology

Hibiscus sabdarrifa are cultivated and consumed as tea, whereas other hibiscus varieties are plan... more Hibiscus sabdarrifa are cultivated and consumed as tea, whereas other hibiscus varieties are planted for the fibers they produce. Hibiscus sabdariffa known as roselle, is one of the underexploited food crops with nutritional and food industry processing potential. Thus, this study was undertaken to determine the effects of different drying methods (sun, solar and oven drying) and drying kinetics on the proximate composition of dried calyx (Proximate and Mineral composition) using AOAC Standard. The data obtained from this study was statistically analyzed using Tukey HSD (Tukey Honest Significant Difference). The values of the model constant and other Statistical parameters for moisture ratio were obtained. The two-term exponential model had the highest R2 and the lowest x2 and RMSE value. The model constants, the R2, x2 and RMSE for each model were obtained. The page model had the highest R2 and lowest x2 and RMSE and was selected as the best fit model for describing the drying kine...

European Journal of Engineering and Technology Research

Soursop has proven to be of high economic importance and contains some essential nutrients which ... more Soursop has proven to be of high economic importance and contains some essential nutrients which are needed in the human body for heathy living. The seeds contain oil of about 24.86%. The oil is of high quality and possesses good characteristics that can be used as feedstock in food industries and in many other industrial applications. This research study was focused on investigating the proximate composition, mechanical and chemical properties of soursop seeds for industrial uses and as a potential supplement for feedstock. The data obtained from this study was statistically analysed using Tukey HSD. The results for the proximate analyses of soursop seeds were found to be high for all moisture content levels (19.10%, 19.82%, 20.67%, 21.25% and 23.15%). The samples with 30% moisture contain level contained the highest level of fat. Carbohydrate content in the sample was found to be low for all moisture content level (3.21%, 3.46%, 3.79%, 4.23% and 44.76%). The relative density value...

Global Journal of Engineering and Technology Advances

The drying of seafood could ensure increase in life span, minimization of storage space, ease of ... more The drying of seafood could ensure increase in life span, minimization of storage space, ease of transportation, etc of the product. It is therefore, necessary to dry and know when to stop drying at an appropriate moisture content that would minimize associated challenges in promoting food security. In this study, selected sea foods, such as prawn and oyster were obtained and then dried to determine their drying mass constants using model equation developed based on basic drying principle. The value of the constants obtained would provide data bank to facilitates prediction of mass of the drying material at given time that would correspond to any desired moisture content, provided the initial moisture content of the material is known. The plots of moisture content against drying time, drying rate against drying time and moisture content versus were carried out. It was observed that increase in size of the drying material increased the drying time. Moreover, the drying rate curve res...

This paper attempts to model the effect of some physical properties such as mass, shell thickness... more This paper attempts to model the effect of some physical properties such as mass, shell thickness and dimensions of Tenera nuts on cracking energy. The relationship would aid in the design of a nut cracker for effective cracking of the nuts to release high percentage of whole kernels. In this study, dried palm nuts of Tenera variety having moisture content of 4.84% d.bwere used. These nuts were classified into six size ranges. Each nut in each size range had it mass weighed; minor diameter, intermediate diameter and major diameter measured and recorded before it was subjected to impact. The shell thickness of each nut that cracked and releases whole kernel after impact in a Test rig was also measured and recorded. Result revealed that nut mass ( m

Agricultural Engineering International: The CIGR Journal, 2016

Evaporative cooling occurs when warm and unsaturated air is blown across a wet surface. This stud... more Evaporative cooling occurs when warm and unsaturated air is blown across a wet surface. This study reviews the development of simulation software as a research tool for designing evaporative cooling systems. The simulation incorporates information concerning the effect of the cooling pad length, cooling pad height, cooling pad thickness, air velocity, water flow rate, water temperature, water to air mass flow rate, and number of cooling pad segments in terms of the performance efficiency of the cooling system. The software rapidly produced model data, which was subjected to further analysis for verification and validation during the testing stage. The modelled and experimental data of the saturation efficiency were compared using 4 of the most important statistical parameters, based on a paired sample t-test of an equal variance assumption. The results indicated that there was no significant difference between the software generated data and the experimental data of the Saturation E...