Abdulalim G IBRAHIM | Federal University, Wukari, Taraba State (original) (raw)
Papers by Abdulalim G IBRAHIM
Arid Zone Journal of Engineering, Technology and Environment, 2018
Biological systems usually consist of large number of components and involve processes at a varie... more Biological systems usually consist of large number of components and involve processes at a variety of spatial, temporal and biological scales. Systems biology aims to understand such systems by integrating information from all functional levels into a single dynamic model. This study discusses model development and the use of Global Sensitivity Analysis (GSA) in systems biology modeling and shows how the information content of clinical data from Short Insulin Tolerance Test (SITT) can be handled by optimal model-based estimation techniques. The goal is to develop dynamic model for type II diabetes and estimate set of parameters of the model with greater accuracy and precision. Based on the SITT data, the blood glucose dynamic model was developed as a system of linear differential equations with constant coefficients (parameters). The sensitivity of the parameters was tested using a novel GSA based approach, Derivative-Based Global Sensitivity Measures (DGSM). The proposed approach...
Research Journal of Food Science and Nutrition
The phytochemical, physicochemical, and sensory properties of the blended kunun-zaki were determi... more The phytochemical, physicochemical, and sensory properties of the blended kunun-zaki were determined. The fermented sorghum paste was substituted for orange-fleshed sweet potato puree at 0, 5, 10, 15, 20, 25 and 50% to produce orange-fleshed sweet potato-sorghum blended kunun-zaki. The phytochemical composition: carotenoids, flavonoids, and vitamin A content of the blended kunun-zaki increased from 0 to 28.14 mg/100g, 0 to 191.50 mg/100g and 0.44 to 7.74 mg/100g respectively, while the tannin content decreased from 4.97 to 1.51 mg/100g, with an increase in added orange-fleshed sweet potato puree. The effects were significant (p = 0.05). The physicochemical properties: pH, total soluble solids, total solid and specific gravity increased from 3.97 to 4.10, 4.95 to 8.25°Brix, 1.55 to 2.80 g/100g and 5.65 to 13.70 g/100g respectively, while the acidity decreased from 39.21 to 12.00 g/100g, with increase in the added orange-fleshed sweet potato puree (0-50%). The average mean scores for ...
Asian Food Science Journal
Production and quality evaluation of biscuits from mango seed kernel-Acha flour blend were studie... more Production and quality evaluation of biscuits from mango seed kernel-Acha flour blend were studied. The biscuits were formulated with 0, 5, 10, 15, 20, 25 and 50% of mango seed kernel (magnifera indica) flour with acha flour. The biscuits were prepared from the flour blends with other ingredient (fat, salt, baking powder and sugar) and evaluated for chemical composition, physical and sensory properties. The moisture, ash, protein and carbohydrate content decreased from 14.79-9.03, 2.37-2.17, 16.85-15.5 and 58.08-56.70, while the fat and fibre content increased from 5.67-8.99 and 0.40-0.90 respectively with increased in the level of mango seed kernel flour addition. Minerals and vitamins content result indicated increasing level of potassium, magnesium, vitamin A and vitamin K (256.31-486.43, 11.26-12.35, 0.01-0.07 and 0.02-0.51mg/g) respectively with increased in mango seed kernel flour. While decreased level of calcium and vitamin C were 1.10-0.66 and 1.65-1.27 with increased mango...
Biodiesel is a non-toxic, ecofriendly, biodegradable and renewable alternative fuel that can be u... more Biodiesel is a non-toxic, ecofriendly, biodegradable and renewable alternative fuel that can be used with little or no engine modifications. The objective of this paper is to investigate the emission characteristics of sandbox and moringa biodiesel and their blends on an internal combustion (IC) engine. The experimental work was carried out on a diesel engine by using biodiesel made from sandbox, moringa and its blends, comparing them to conventional diesel fuel. The fuels used in the analyses are of the following composition BSM20 DF 80 , BSM25 DF 75 , BSM30 DF 70 , BSM35 DF 65 , BSM40 DF 60 , BS20 DF 80 , BS25 DF 75 , BS30 DF 70 , BS35 DF 65 , BS40 DF 60 , BM20 DF 80 , BM25 DF 75 , BM30 DF 70 , BM35 DF 65 , BM40 DF 60 and diesel fuel (DF). The engine was operated over a range of engine speeds (1500rpm-2700rpm). Comprehensive analyses were carried out on major regulated emissions such as NOx, CO, smoke density, Engine noise level and HC. The results evidently indicate that the engine running with biodiesel and blends have higher NOx emission. However, the emissions of engine running on biodiesel and blends showed reduction in CO, smoke density, Engine noise level and HC respectively as compared to diesel fuel at various operating conditions. On the whole, methyl esters of sandbox, moringa and its blends with diesel fuel can be used as an alternative fuel for diesel in direct injection diesel engines without any significant engine modification.
A THESIS SUBMITTED TO THE SCHOOL OF POSTGRADUATE STUDIES, AHMADU BELLO UNIVERSITY, ZARIA IN PARTI... more A THESIS SUBMITTED TO THE SCHOOL OF POSTGRADUATE STUDIES, AHMADU BELLO UNIVERSITY, ZARIA IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE AWARD OF MASTER OF SCIENCE DEGREE IN CHEMICAL ENGINEERING DEPARTMENT OF CHEMICAL ENGINEERING, FACULTY OF ENGINEERING AHMADU BELLO UNIVERSITY, ZARIA NIGERIA
Research Journal of Food Science and Nutrition, 2021
The phytochemical, physicochemical, and sensory properties of the blended kunun-zaki were determi... more The phytochemical, physicochemical, and sensory properties of the blended kunun-zaki were determined. The fermented sorghum paste was substituted for orange-fleshed sweet potato puree at 0, 5, 10, 15, 20, 25 and 50% to produce orange-fleshed sweet potato-sorghum blended kunun-zaki. The phytochemical composition: carotenoids, flavonoids, and vitamin A content of the blended kunun-zaki increased from 0 to 28.14 mg/100g, 0 to 191.50 mg/100g and 0.44 to 7.74 mg/100g respectively, while the tannin content decreased from 4.97 to 1.51 mg/100g, with an increase in added orange-fleshed sweet potato puree. The effects were significant (p = 0.05). The physicochemical properties: pH, total soluble solids, total solid and specific gravity increased from 3.97 to 4.10, 4.95 to 8.25°Brix, 1.55 to 2.80 g/100g and 5.65 to 13.70 g/100g respectively, while the acidity decreased from 39.21 to 12.00 g/100g, with increase in the added orange-fleshed sweet potato puree (0-50%). The average mean scores for sensory quality; flavour, colour and taste increased from 6.70 to 7.06, 6.70 to 7.41 and 6.43 to7.40 respectively, whereas odour, mouth feel and appearance decreased with increasing inclusion level of oranged-fleshed sweet potato puree from 7.90 to 6.93, 7.40 to 6.40 and 7.26 to 6.72 respectively. Overall results show that the beverage formulated were generally acceptable of which the sample containing 20% orange-fleshed sweet puree was most preferred. The addition of oranged-fleshed sweet potato puree improved the phytochemical content and the sensory quality [taste, flavour and colour] of the sorghum-based kunun-zaki.
Asian Food Science Journal, 2022
Production and quality evaluation of biscuits from mango seed kernel-Acha flour blend were studie... more Production and quality evaluation of biscuits from mango seed kernel-Acha flour blend were studied. The biscuits were formulated with 0, 5, 10, 15, 20, 25 and 50% of mango seed kernel (magnifera indica) flour with acha flour. The biscuits were prepared from the flour blends with other ingredient (fat, salt, baking powder and sugar) and evaluated for chemical composition, physical and sensory properties. The moisture, ash, protein and carbohydrate content decreased from 14.79-9.03, 2.37-2.17, 16.85-15.5 and 58.08-56.70, while the fat and fibre content increased from 5.67-8.99 and 0.40-0.90 respectively with increased in the level of mango seed kernel flour addition. Minerals and vitamins content result indicated increasing level of potassium, magnesium, vitamin A and vitamin K (256.31-486.43, 11.26-12.35, 0.01-0.07 and 0.02-0.51mg/g) respectively with increased in mango seed kernel flour. While decreased level of calcium and vitamin C were 1.10-0.66 and 1.65-1.27 with increased mango seed kernel flour addition. Physical properties result indicated a decreased in the weight, height diameters, thickness and break strength 24.95-21.90, 3.15-2.85, 5.25-4.85, 1.15-0.75 and 1.45-0.30 respectively, spread ratio and volume 5.25-6.25 and 21.66-22.91 of the biscuit sample increased with increased in mango seed kernel flour addition. In sensory evaluation, biscuits containing 10% mango kernel flour had the highest sensory score for all sensory attribute. The biscuit blends were generally accepted up to 15% but most preferred and accepted blend biscuits is that of the 100% acha and 100% wheat flour. The mango seed kernel incorporation had significant effect and could contribute to the improvement of the flour blend biscuits.
Journal of Science and Technology Research, 2019
Biodiesel is a non–toxic, ecofriendly, biodegradable and renewable alternative fuel that can be u... more Biodiesel is a non–toxic, ecofriendly, biodegradable and renewable
alternative fuel that can be used with little or no engine modifications.
The objective of this paper is to investigate the emission characteristics of
sandbox and moringa biodiesel and their blends on an internal
combustion (IC) engine. The experimental work was carried out on a
diesel engine by using biodiesel made from sandbox, moringa and its
blends, comparing them to conventional diesel fuel. The fuels used in the
analyses are of the following composition BSM20 DF 80 , BSM25 DF 75 ,
BSM30 DF 70 , BSM35 DF 65 , BSM40 DF 60 , BS20 DF 80 , BS25 DF 75 , BS30
DF 70 , BS35 DF 65 , BS40 DF 60 , BM20 DF 80 , BM25 DF 75 , BM30 DF 70 ,
BM35 DF 65 , BM40 DF 60 and diesel fuel (DF). The engine was operated
over a range of engine speeds (1500rpm-2700rpm). Comprehensive
analyses were carried out on major regulated emissions such as NOx,
CO, smoke density, Engine noise level and HC. The results evidently
indicate that the engine running with biodiesel and blends have higher
NOx emission. However, the emissions of engine running on biodiesel and
blends showed reduction in CO, smoke density, Engine noise level and
HC respectively as compared to diesel fuel at various operating
conditions. On the whole, methyl esters of sandbox, moringa and its
blends with diesel fuel can be used as an alternative fuel for diesel in
direct injection diesel engines without any significant engine
modification.
IOSR JOURNAL OF ENGINEERING , 2020
In this paper, receding horizon control strategy under model predictive control framework is expl... more In this paper, receding horizon control strategy under model predictive control framework is exploited with the aim to regulate blood glucose concentration for Type II diabetes. The use of model-based control schemes has received a wider acceptance in Biomedical Engineering applications. One of such control schemes is the receding horizon that involves solving a constrained optimization problem repeatedly using past and current state of a system to predict the future control action. Two forms of receding horizon control strategy (Fixed-end and Moving-end) were proposed and applied to a dynamic model. Different disturbance scenarios were generated to evaluate the performance of the two strategies in terms of its efficiency to handle disturbances. The proposed control strategies successfully addressed the issues of the input/external disturbances considered for the patients in a virtual situation and maintained blood glucose level at 80.06 mg/dL.
Arid Zone Journal of Engineering, Technology and Environment, Faculty of Engineering, University of Maiduguri, Maiduguri, Nigeria., 2018
Biological systems usually consist of large number of components and involve processes at a varie... more Biological systems usually consist of large number of components and involve processes at a variety of
spatial, temporal and biological scales. Systems biology aims to understand such systems by integrating
information from all functional levels into a single dynamic model. This study discusses model development
and the use of Global Sensitivity Analysis (GSA) in systems biology modeling and shows how the
information content of clinical data from Short Insulin Tolerance Test (SITT) can be handled by optimal
model-based estimation techniques. The goal is to develop dynamic model for type II diabetes and estimate
set of parameters of the model with greater accuracy and precision. Based on the SITT data, the blood glucose
dynamic model was developed as a system of linear differential equations with constant coefficients
(parameters). The sensitivity of the parameters was tested using a novel GSA based approach, DerivativeBased Global Sensitivity Measures (DGSM). The proposed approach was implemented in SensSB (a Matlab
based toolbox). For the purpose of comparison, the sensitivity of the model was also tested using Sobol’s
method and a local approach. The results have shown that the model is less sensitive to the third parameter
K2 and fits the SITT data satisfactorily.
Arid Zone Journal of Engineering, Technology and Environment, 2018
Biological systems usually consist of large number of components and involve processes at a varie... more Biological systems usually consist of large number of components and involve processes at a variety of spatial, temporal and biological scales. Systems biology aims to understand such systems by integrating information from all functional levels into a single dynamic model. This study discusses model development and the use of Global Sensitivity Analysis (GSA) in systems biology modeling and shows how the information content of clinical data from Short Insulin Tolerance Test (SITT) can be handled by optimal model-based estimation techniques. The goal is to develop dynamic model for type II diabetes and estimate set of parameters of the model with greater accuracy and precision. Based on the SITT data, the blood glucose dynamic model was developed as a system of linear differential equations with constant coefficients (parameters). The sensitivity of the parameters was tested using a novel GSA based approach, Derivative-Based Global Sensitivity Measures (DGSM). The proposed approach...
Research Journal of Food Science and Nutrition
The phytochemical, physicochemical, and sensory properties of the blended kunun-zaki were determi... more The phytochemical, physicochemical, and sensory properties of the blended kunun-zaki were determined. The fermented sorghum paste was substituted for orange-fleshed sweet potato puree at 0, 5, 10, 15, 20, 25 and 50% to produce orange-fleshed sweet potato-sorghum blended kunun-zaki. The phytochemical composition: carotenoids, flavonoids, and vitamin A content of the blended kunun-zaki increased from 0 to 28.14 mg/100g, 0 to 191.50 mg/100g and 0.44 to 7.74 mg/100g respectively, while the tannin content decreased from 4.97 to 1.51 mg/100g, with an increase in added orange-fleshed sweet potato puree. The effects were significant (p = 0.05). The physicochemical properties: pH, total soluble solids, total solid and specific gravity increased from 3.97 to 4.10, 4.95 to 8.25°Brix, 1.55 to 2.80 g/100g and 5.65 to 13.70 g/100g respectively, while the acidity decreased from 39.21 to 12.00 g/100g, with increase in the added orange-fleshed sweet potato puree (0-50%). The average mean scores for ...
Asian Food Science Journal
Production and quality evaluation of biscuits from mango seed kernel-Acha flour blend were studie... more Production and quality evaluation of biscuits from mango seed kernel-Acha flour blend were studied. The biscuits were formulated with 0, 5, 10, 15, 20, 25 and 50% of mango seed kernel (magnifera indica) flour with acha flour. The biscuits were prepared from the flour blends with other ingredient (fat, salt, baking powder and sugar) and evaluated for chemical composition, physical and sensory properties. The moisture, ash, protein and carbohydrate content decreased from 14.79-9.03, 2.37-2.17, 16.85-15.5 and 58.08-56.70, while the fat and fibre content increased from 5.67-8.99 and 0.40-0.90 respectively with increased in the level of mango seed kernel flour addition. Minerals and vitamins content result indicated increasing level of potassium, magnesium, vitamin A and vitamin K (256.31-486.43, 11.26-12.35, 0.01-0.07 and 0.02-0.51mg/g) respectively with increased in mango seed kernel flour. While decreased level of calcium and vitamin C were 1.10-0.66 and 1.65-1.27 with increased mango...
Biodiesel is a non-toxic, ecofriendly, biodegradable and renewable alternative fuel that can be u... more Biodiesel is a non-toxic, ecofriendly, biodegradable and renewable alternative fuel that can be used with little or no engine modifications. The objective of this paper is to investigate the emission characteristics of sandbox and moringa biodiesel and their blends on an internal combustion (IC) engine. The experimental work was carried out on a diesel engine by using biodiesel made from sandbox, moringa and its blends, comparing them to conventional diesel fuel. The fuels used in the analyses are of the following composition BSM20 DF 80 , BSM25 DF 75 , BSM30 DF 70 , BSM35 DF 65 , BSM40 DF 60 , BS20 DF 80 , BS25 DF 75 , BS30 DF 70 , BS35 DF 65 , BS40 DF 60 , BM20 DF 80 , BM25 DF 75 , BM30 DF 70 , BM35 DF 65 , BM40 DF 60 and diesel fuel (DF). The engine was operated over a range of engine speeds (1500rpm-2700rpm). Comprehensive analyses were carried out on major regulated emissions such as NOx, CO, smoke density, Engine noise level and HC. The results evidently indicate that the engine running with biodiesel and blends have higher NOx emission. However, the emissions of engine running on biodiesel and blends showed reduction in CO, smoke density, Engine noise level and HC respectively as compared to diesel fuel at various operating conditions. On the whole, methyl esters of sandbox, moringa and its blends with diesel fuel can be used as an alternative fuel for diesel in direct injection diesel engines without any significant engine modification.
A THESIS SUBMITTED TO THE SCHOOL OF POSTGRADUATE STUDIES, AHMADU BELLO UNIVERSITY, ZARIA IN PARTI... more A THESIS SUBMITTED TO THE SCHOOL OF POSTGRADUATE STUDIES, AHMADU BELLO UNIVERSITY, ZARIA IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE AWARD OF MASTER OF SCIENCE DEGREE IN CHEMICAL ENGINEERING DEPARTMENT OF CHEMICAL ENGINEERING, FACULTY OF ENGINEERING AHMADU BELLO UNIVERSITY, ZARIA NIGERIA
Research Journal of Food Science and Nutrition, 2021
The phytochemical, physicochemical, and sensory properties of the blended kunun-zaki were determi... more The phytochemical, physicochemical, and sensory properties of the blended kunun-zaki were determined. The fermented sorghum paste was substituted for orange-fleshed sweet potato puree at 0, 5, 10, 15, 20, 25 and 50% to produce orange-fleshed sweet potato-sorghum blended kunun-zaki. The phytochemical composition: carotenoids, flavonoids, and vitamin A content of the blended kunun-zaki increased from 0 to 28.14 mg/100g, 0 to 191.50 mg/100g and 0.44 to 7.74 mg/100g respectively, while the tannin content decreased from 4.97 to 1.51 mg/100g, with an increase in added orange-fleshed sweet potato puree. The effects were significant (p = 0.05). The physicochemical properties: pH, total soluble solids, total solid and specific gravity increased from 3.97 to 4.10, 4.95 to 8.25°Brix, 1.55 to 2.80 g/100g and 5.65 to 13.70 g/100g respectively, while the acidity decreased from 39.21 to 12.00 g/100g, with increase in the added orange-fleshed sweet potato puree (0-50%). The average mean scores for sensory quality; flavour, colour and taste increased from 6.70 to 7.06, 6.70 to 7.41 and 6.43 to7.40 respectively, whereas odour, mouth feel and appearance decreased with increasing inclusion level of oranged-fleshed sweet potato puree from 7.90 to 6.93, 7.40 to 6.40 and 7.26 to 6.72 respectively. Overall results show that the beverage formulated were generally acceptable of which the sample containing 20% orange-fleshed sweet puree was most preferred. The addition of oranged-fleshed sweet potato puree improved the phytochemical content and the sensory quality [taste, flavour and colour] of the sorghum-based kunun-zaki.
Asian Food Science Journal, 2022
Production and quality evaluation of biscuits from mango seed kernel-Acha flour blend were studie... more Production and quality evaluation of biscuits from mango seed kernel-Acha flour blend were studied. The biscuits were formulated with 0, 5, 10, 15, 20, 25 and 50% of mango seed kernel (magnifera indica) flour with acha flour. The biscuits were prepared from the flour blends with other ingredient (fat, salt, baking powder and sugar) and evaluated for chemical composition, physical and sensory properties. The moisture, ash, protein and carbohydrate content decreased from 14.79-9.03, 2.37-2.17, 16.85-15.5 and 58.08-56.70, while the fat and fibre content increased from 5.67-8.99 and 0.40-0.90 respectively with increased in the level of mango seed kernel flour addition. Minerals and vitamins content result indicated increasing level of potassium, magnesium, vitamin A and vitamin K (256.31-486.43, 11.26-12.35, 0.01-0.07 and 0.02-0.51mg/g) respectively with increased in mango seed kernel flour. While decreased level of calcium and vitamin C were 1.10-0.66 and 1.65-1.27 with increased mango seed kernel flour addition. Physical properties result indicated a decreased in the weight, height diameters, thickness and break strength 24.95-21.90, 3.15-2.85, 5.25-4.85, 1.15-0.75 and 1.45-0.30 respectively, spread ratio and volume 5.25-6.25 and 21.66-22.91 of the biscuit sample increased with increased in mango seed kernel flour addition. In sensory evaluation, biscuits containing 10% mango kernel flour had the highest sensory score for all sensory attribute. The biscuit blends were generally accepted up to 15% but most preferred and accepted blend biscuits is that of the 100% acha and 100% wheat flour. The mango seed kernel incorporation had significant effect and could contribute to the improvement of the flour blend biscuits.
Journal of Science and Technology Research, 2019
Biodiesel is a non–toxic, ecofriendly, biodegradable and renewable alternative fuel that can be u... more Biodiesel is a non–toxic, ecofriendly, biodegradable and renewable
alternative fuel that can be used with little or no engine modifications.
The objective of this paper is to investigate the emission characteristics of
sandbox and moringa biodiesel and their blends on an internal
combustion (IC) engine. The experimental work was carried out on a
diesel engine by using biodiesel made from sandbox, moringa and its
blends, comparing them to conventional diesel fuel. The fuels used in the
analyses are of the following composition BSM20 DF 80 , BSM25 DF 75 ,
BSM30 DF 70 , BSM35 DF 65 , BSM40 DF 60 , BS20 DF 80 , BS25 DF 75 , BS30
DF 70 , BS35 DF 65 , BS40 DF 60 , BM20 DF 80 , BM25 DF 75 , BM30 DF 70 ,
BM35 DF 65 , BM40 DF 60 and diesel fuel (DF). The engine was operated
over a range of engine speeds (1500rpm-2700rpm). Comprehensive
analyses were carried out on major regulated emissions such as NOx,
CO, smoke density, Engine noise level and HC. The results evidently
indicate that the engine running with biodiesel and blends have higher
NOx emission. However, the emissions of engine running on biodiesel and
blends showed reduction in CO, smoke density, Engine noise level and
HC respectively as compared to diesel fuel at various operating
conditions. On the whole, methyl esters of sandbox, moringa and its
blends with diesel fuel can be used as an alternative fuel for diesel in
direct injection diesel engines without any significant engine
modification.
IOSR JOURNAL OF ENGINEERING , 2020
In this paper, receding horizon control strategy under model predictive control framework is expl... more In this paper, receding horizon control strategy under model predictive control framework is exploited with the aim to regulate blood glucose concentration for Type II diabetes. The use of model-based control schemes has received a wider acceptance in Biomedical Engineering applications. One of such control schemes is the receding horizon that involves solving a constrained optimization problem repeatedly using past and current state of a system to predict the future control action. Two forms of receding horizon control strategy (Fixed-end and Moving-end) were proposed and applied to a dynamic model. Different disturbance scenarios were generated to evaluate the performance of the two strategies in terms of its efficiency to handle disturbances. The proposed control strategies successfully addressed the issues of the input/external disturbances considered for the patients in a virtual situation and maintained blood glucose level at 80.06 mg/dL.
Arid Zone Journal of Engineering, Technology and Environment, Faculty of Engineering, University of Maiduguri, Maiduguri, Nigeria., 2018
Biological systems usually consist of large number of components and involve processes at a varie... more Biological systems usually consist of large number of components and involve processes at a variety of
spatial, temporal and biological scales. Systems biology aims to understand such systems by integrating
information from all functional levels into a single dynamic model. This study discusses model development
and the use of Global Sensitivity Analysis (GSA) in systems biology modeling and shows how the
information content of clinical data from Short Insulin Tolerance Test (SITT) can be handled by optimal
model-based estimation techniques. The goal is to develop dynamic model for type II diabetes and estimate
set of parameters of the model with greater accuracy and precision. Based on the SITT data, the blood glucose
dynamic model was developed as a system of linear differential equations with constant coefficients
(parameters). The sensitivity of the parameters was tested using a novel GSA based approach, DerivativeBased Global Sensitivity Measures (DGSM). The proposed approach was implemented in SensSB (a Matlab
based toolbox). For the purpose of comparison, the sensitivity of the model was also tested using Sobol’s
method and a local approach. The results have shown that the model is less sensitive to the third parameter
K2 and fits the SITT data satisfactorily.