Papers by Ezeddin H . Alshbuki
Scholars International Journal of Chemistry and Material Sciences
This study assessed the effect of cabamate and pyrethroid pesticide residues from agricultural ac... more This study assessed the effect of cabamate and pyrethroid pesticide residues from agricultural activities on fish samples from the Owena river, Ondo State, Nigeria. The aim of the study was to assess the bioaccumulation and the health risk implication of consuming polluted fish from the river. The fish samples were extracted with an ultrasonic bath extractor and the extracts were analysed with a gas chromatograph coupled to a mass spectrometry detector. The mean level of carbamate pesticide contaminants in dry season for Oreochromis niloticus, Gvmnarchus niloticus, S. galileaus and Claria gariepinus are 0.25±0.02µg/g, 0.24±0.01µg/g, 0.30±0.03µg/g and 0.26±0.02µg/g respectively. Their level in wet season for Oreochromis niloticus, Gvmnarchus niloticus, S. galileous, Clarias anguillaris and Parachanna obscura were 0.11±0.03µg/g, 0.21±0.02µg/g, 0.10±0.04µg/g, 0.14±0.03, 0.13±0.03µg/g and 0.12±0.05 µg/g respectively. The level of pyrethroid contaminants in dry season for Oreochromis niloticus, Gvmnarchus niloticus, S. galileaus and Claria gariepinus are 0.82±0.79µg/g, 0.53±0.04µg/g, 0.39±0.04µg/g and 1.91±1.99µg/g respectively. Their level in wet season for Oreochromis niloticus, Gvmnarchus niloticus, S. galileous, Claria gariepinus. Clarias anguillaris and Parachanna obscura were 0.22±0.05µg/g, 0.18±0.06µg/g, 0.13±0.05µg/g, 0.19±0.10, 0.12±0.02µg/g and 0.22±0.04 µg/g respectively. The concentrations of some of pollutants in the fish samples were higher than the FAO/WHO maximum residue limit of 0.5µg/g. The health risk evaluation indicates that there is no health risk. Nevertheless, strict monitoring of the handling and usage of these chemicals should continue to be enforced strictly by Nigerian government.
Quick Response Code Abstract: Natural gas is considered one of the most important sources of ener... more Quick Response Code Abstract: Natural gas is considered one of the most important sources of energy currently available in the world, and Some difficulties face the process of transporting gas through pipelines, including terrain and stages that occur during the transportation process, and this study was based on simulating the transfer of the produced gas from three wells that were linked Together with a steel pipe network of different lengths and diameters from 3 to 6 inches and a total length of about 3274 meters connected to the main transportation pipeline with a diameter of 6 inches and by observing the change in heat loss caused by the piping network. It was shown a decrease in the amount of heat lost from the pipes as a result of wrapping these pipes with a layer of Asphalt with a thickness of one millimeter to avoid the occurrence of corrosion of the outer surface and to prevent the formation of hydrates, and with the continued flow of gas in the steady-state through the ne...
Graphene (GR) and Carbon nanotubes (CNTs) are highperformance carbon non-materials. Their excelle... more Graphene (GR) and Carbon nanotubes (CNTs) are highperformance carbon non-materials. Their excellent electron transfer and electrocatalytic properties have attracted much interest in the field of electrochemistry. In this work graphene as a nanohybrid composites based on noble metal/metal alloy were applied to study the electrochemical sensing of hydrogen peroxide and glucose. The main contents were described as follows. We have developed the design and synthesis of a new type of high-performance nanocatalysts, i.e. deposit tiny palladium and platinum alloy nanoparticles on the surface of freestanding ultrathin nanoporous gold film (Pd&Pt@NPG), and transfer it to the surface of graphene paper for the fabricate free-standing and flexible Pd&Pt@NPG/graphene paper, which enable to be used for real-time tracking the secretion of H2O2 in different types of living human cells.
Tensile Test to Study the Quality of Reinforcing Steel Bars
Journal of Animal Science, 2021
In this research, samples of locally manufactured and imported reinforcing steel with different d... more In this research, samples of locally manufactured and imported reinforcing steel with different diameters 14 and 16 mm were studied by conducting tensile test, which is an important mechanical test to know the properties of mechanical materials and study their behaviour by under loading two samples of each type using a general tensile testing machine type (SHUMIDUZ –UH2000). The results obtained from this test were used to find a set of properties represented in the ultimate tensile strength (σUTS), yield strength or yield point (σy), yield strain(e), and maximum strain (eMax), and there was a set of properties such as elastic modulus (E), Toughness modulus (T) and modulus of Resilience (Ur) that were mathematically calculated. The real stress and real strain for all samples were calculated too. The engineering stress and the engineering strain were presented by drawing the curves in order to show the difference. The results obtained from the tensile test showed that all samples wer...
Tensile Test to Study the Quality of Reinforcing Steel Bars
Journal of Animal Science, 2021
In this research, samples of locally manufactured and imported reinforcing steel with different d... more In this research, samples of locally manufactured and imported reinforcing steel with different diameters 14 and 16 mm were studied by conducting tensile test, which is an important mechanical test to know the properties of mechanical materials and study their behaviour by under loading two samples of each type using a general tensile testing machine type (SHUMIDUZ –UH2000). The results obtained from this test were used to find a set of properties represented in the ultimate tensile strength (σUTS), yield strength or yield point (σy), yield strain(e), and maximum strain (eMax), and there was a set of properties such as elastic modulus (E), Toughness modulus (T) and modulus of Resilience (Ur) that were mathematically calculated. The real stress and real strain for all samples were calculated too. The engineering stress and the engineering strain were presented by drawing the curves in order to show the difference. The results obtained from the tensile test showed that all samples wer...
Scholars International Journal of Chemistry and Material Sciences Cabamates and Pyrethroid Pesticide Residues in Fish from Owena River, Ondo State, Nigeria and their Health Risk Evaluation
Research work, 2020
This study assessed the effect of cabamate and pyrethroid pesticide residues from agricultural ac... more This study assessed the effect of cabamate and pyrethroid pesticide residues from agricultural activities on fish samples from the Owena river, Ondo State, Nigeria. The aim of the study was to assess the bioaccumulation and the health risk implication of consuming polluted fish from the river. The fish samples were extracted with an ultrasonic bath extractor and the extracts were analysed with a gas chromatograph coupled to a mass spectrometry detector. The mean level of carbamate pesticide contaminants in dry season for Oreochromis niloticus, Gvmnarchus niloticus, S. galileaus and Claria gariepinus are 0.25±0.02µg/g, 0.24±0.01µg/g, 0.30±0.03µg/g and 0.26±0.02µg/g respectively. Their level in wet season for Oreochromis niloticus, Gvmnarchus niloticus, S. galileous, Clarias anguillaris and Parachanna obscura were 0.11±0.03µg/g, 0.21±0.02µg/g, 0.10±0.04µg/g, 0.14±0.03, 0.13±0.03µg/g and 0.12±0.05 µg/g respectively. The level of pyrethroid contaminants in dry season for Oreochromis nil...
Scholars International Journal of Chemistry and Material Sciences
Dimethyl ether (DME) is used primarily as a propellant and a motor fuel alternative, (DME) is mis... more Dimethyl ether (DME) is used primarily as a propellant and a motor fuel alternative, (DME) is miscible with most organic solvents and has a high solubility in water. Recently, the use of (DME) as a fuel additive for diesel engines has been investigated due to its high volatility (desired for cold starting) and high cetane number of 55-60, with the advantage of high efficiency, and low exhaust emissions (no particulates, no Sulphur, and low NOx). Technical-quality (DME) is an alternative to liquefied petroleum gas (LPG). The production processes included catalytic dehydration of methanol in an adiabatic fixed-bed reactor and two columns product separations. In this study, the technological process for (DME) synthesis is simulated in Aspen Hysys V3.1 based on the combined parameters of the reaction dynamic model for methanol dehydration reaction, the improved NRTL model of the liquid phase, the PR model of vapor phase was selected as the fluid package as it is able to handle selected pure components (methanol, water and dimethyl ether). The equilibrium reaction was selected to describe conversion of methanol to DME reaction and it is about 80%. A feasibility study and design of a plant producing 99.9 wt% Dimethyl ether (DME). The plant is designed which is capable of producing 50,000 metric tons of (DME) per year via the catalytic dehydration of methanol over an acid zeolite catalyst.
Scholars International Journal of Chemistry and Material Sciences
Dimethyl ether (DME) is used primarily as a propellant and a motor fuel alternative, (DME) is mis... more Dimethyl ether (DME) is used primarily as a propellant and a motor fuel alternative, (DME) is miscible with most organic solvents and has a high solubility in water. Recently, the use of (DME) as a fuel additive for diesel engines has been investigated due to its high volatility (desired for cold starting) and high cetane number of 55-60, with the advantage of high efficiency, and low exhaust emissions (no particulates, no Sulphur, and low NOx). Technical-quality (DME) is an alternative to liquefied petroleum gas (LPG). The production processes included catalytic dehydration of methanol in an adiabatic fixed-bed reactor and two columns product separations. In this study, the technological process for (DME) synthesis is simulated in Aspen Hysys V3.1 based on the combined parameters of the reaction dynamic model for methanol dehydration reaction, the improved NRTL model of the liquid phase, the PR model of vapor phase was selected as the fluid package as it is able to handle selected pure components (methanol, water and dimethyl ether). The equilibrium reaction was selected to describe conversion of methanol to DME reaction and it is about 80%. A feasibility study and design of a plant producing 99.9 wt% Dimethyl ether (DME). The plant is designed which is capable of producing 50,000 metric tons of (DME) per year via the catalytic dehydration of methanol over an acid zeolite catalyst.
Conference on the role of earth and environmental sciences in developing Libyan economy, Zawia, Libya, March 15-16, 2021, 2021
Natural gas is considered one of the most important sources of energy currently available in the ... more Natural gas is considered one of the most important sources of energy currently available in the world, and Some
difficulties face the process of transporting gas through pipelines, including terrain and stages that occur during the
transportation process and this study was based on simulating the transfer of the produced gas from three wells that
were linked Together with a steel pipe network of different lengths and diameters from 3 to 6 inches and a total length
of about 3274 meters connected to the main transportation pipeline with a diameter of 6 inches and by observing the
change in heat loss caused by the piping network. It was shown a decrease in the amount of heat lost from the pipes as
a result of wrapping these pipes with a layer of Asphalt with a thickness of one millimeter to avoid the occurrence of
corrosion of the outer surface and to prevent the formation of hydrates, and with the continued flow of gas in the
steady-state through the network. It was shown through the results obtained from the PIPSYS program. The flow
the pattern was an annular mist of all pipes. The final pressure of the last production line was also calculated after adjusting
the operating pressure of well A with the pressure of the last production line until it reached the desired values of 6895
kpa, 34.61°C and a flow rate of 1300 kg mol per hour, as well as a decrease in the maximum head pressure drop this
part was -9.6 kpa And, by making some adjustments to the fluid package, i.e. by testing three models of state equations
in the gas phase and all results were close, as well as calculating the phase diagram of pressure, temperature, and the
ability to form hydrates in the outlet conditions of the last part of the network.
Third Conference for Engineering Sciences and Technology (CEST- 2020) 01- 03 December 2020 /Al Khoms - Libya, 2020
Studies show that the heat transferred from the walls and roofs of buildings in the desert climat... more Studies show that the heat transferred from the walls and roofs of buildings in the desert climate is
about 60- 70%, while the rest comes from window and door openings. Thermal insulation is the most
an effective technique used in reducing the heat transferred into the building and thus reducing the
consumption of electric energy used in cooling, where the required amount of electricity is the most
important problem experienced by the residents of the southern regions of Libya.
This paper aims to identify the importance of thermal insulation of the concrete structures in the desert
areas and their role in reducing electricity consumption. In this research, we concluded that the application
of thermal insulation in residential buildings is an important technique in reducing the heat
transferred into the building and reducing the consumption of electric energy is used in the
the appropriate place of the building and appropriate quantity.
2nd Conference for Engineering Sciences and Technology - CEST2 29-31 October 2019 - Sabratha –Libya, 2019
More recently, the demand for energy has increased to meet the growing need for it because of the... more More recently, the demand for energy has increased to meet the growing need for it because of the continuous development in all areas of life. The importance of the subject must be achieved by focusing on the sources of this energy, including the energy produced by natural gas, which has increased interest in manufacturing in recent years, which is a clean source of energy compared to the energy produced from crude oil, for example, we find that Libya came in the center The eighth in the Arab reserves of 1.5 trillion cubic meters, according to data from the OAPEC, the reserves of OPEC countries of proven natural gas represents 27% of the global reserve. The natural gas industry is considered one of the most important oil industries. The industry is undergoing several stages, the most important of which is the phase of removing H2S gas and CO2 from natural gas components due to problems such as environmental pollution and corrosion of operating equipment. The aim of this study is to increase the concentration of CH4 and natural gas purification by Diethanolamine ( DEA) from these pollutants, which were discussed in this study using the Aspen HYSYS program to simulate the steady-state of typical natural gas composition of this phase by changing several parameters Design and operation such as operating temperature, gas flow rate, diameter, and a number of trays for absorption column. In order to achieve the best results of the degree of purity of methane after the purification phase where a rate of about 1245 kgmole/h ( 25 MMSCFD ) reached a purity of 93% for methane and the number of trays 20, including a space of 0.5 m. When comparing the results obtained for pure methane and acid gases after the purification process, it was consistent with the actual and typical results applied as well as the rest of the design parts of the purification column.
ANALYSIS OF NATURAL GAS PROPERTIES ( A CASE STUDY OF WAFA GAS FIELD), 2019
The field is located about 540 KM southwest of Tripoli .The southern part was discovered in 1964
... more The field is located about 540 KM southwest of Tripoli .The southern part was discovered in 1964
by Shell – Libya with well D1, and the northern culmination, was discovered Sirte oil Company in
1991 with well A1. In designing gas production, processing, transport and handling systems, a
complete knowledge of natural gas properties is crucial. For this reason, the purpose of this study
was measurement and prediction of hydrocarbon fluid properties .This study was conducted to
shows the reservoir of natural gas properties analysis of Wafa gas field from gas composition.
Based on the studied composition, it is shown that the Wafa gas is a sweet gas, the viscosity of
the gas is 0. 01095 cp at reservoir formation temperature 80. 28 ℉ and pressure 514. 88 psia , The
gas compressibility factor, real gas density, and gas formation volume factor are 0. 92, 1. 80
lbm ⁄ ft 3 , 0. 02699 ft 3 ⁄ scf , respectively.
The field is located about 540 KM southwest of Tripoli .The southern part was discovered in 1964 ... more The field is located about 540 KM southwest of Tripoli .The southern part was discovered in 1964 by Shell -Libya with well D1, and the northern culmination, was discovered Sirte oil Company in 1991 with well A1. In designing gas production, processing, transport and handling systems, a complete knowledge of natural gas properties is crucial. For this reason, the purpose of this study was measurement and prediction of hydrocarbon fluid properties .This study was conducted to shows the reservoir of natural gas properties analysis of Wafa gas field from gas composition. Based on the studied composition, it is shown that the Wafa gas is a sweet gas, the viscosity of the gas is 0.01095 cp at reservoir formation temperature 80.28 ℉and pressure 514.88 psia , The gas compressibility factor, real gas density and gas formation volume factor are 0.92, 1.80 lbm ft 3 ⁄ , 0.02699 ft 3 scf ⁄ , respectively.
Preparation of Pd-Pt alloy nanoparticles/nanoporous gold/grapheme paper electrode and its use for real-time detection for glucose and H2O2 from living cells, 2021
Graphene (GR) and Carbon nanotubes (CNTs) are high performance
carbon non-materials. Their excell... more Graphene (GR) and Carbon nanotubes (CNTs) are high performance
carbon non-materials. Their excellent electron transfer and
electrocatalytic properties have attracted much interest in the field of
electrochemistry. In this work graphene as a nanohybrid composites
based on noble metal/metal alloy were applied to study the
electrochemical sensing of hydrogen peroxide and glucose. The main
contents were described as follows. We have developed the design and
synthesis of a new type of high-performance nanocatalysts, i.e. deposit
tiny palladium and platinum alloy nanoparticles on the surface of freestanding
ultrathin nanoporous gold film (Pd&Pt@NPG), and transfer it to
the surface of graphene paper for the fabricate free-standing and flexible
Pd&Pt@NPG/graphene paper, which enables to be used for real-time
tracking the secretion of H2O2 in different types of living human cells.
Mesoporous Co2NiO4 nanotube arrays grown on the carbon cloth for high-performance pseudocapacitors, 2021
Supercapacitors, known as ultracapacitors or electrochemical supercapacitors
(ESCs), are consider... more Supercapacitors, known as ultracapacitors or electrochemical supercapacitors
(ESCs), are considered as promising candidates for energy storage because they have the
advantages of higher power densities, longer cycle lives, a short charging time, low
maintenance cost, and so forth. There are mainly two kinds of supercapacitors based on the
charge and discharge mechanism. The first is carbon-based materials with a large specific
surface area, which charge and discharge by an electric double layer mechanism. The
second is pseudocapacitance materials (transition metal oxides and conductive polymers),
where the charging and discharging is based on the redox reaction of the active materials.
Graphene has attracted the most attention in supercapacitors owing to its unique two-dimensional
structure, remarkable chemical stability, high surface area, and high electrical
conductivity. The research of mixed transition metal oxide has also become a hotspot
recently. This work concerns the preparation, characterization of Co2NiO4 composite on
carbon cloth for high-performance pseudocapacitors. We design and synthesize Co2NiO4
porous nanotubes through a template with a simple electrochemical method followed by a
thermal annealing treatment. We prepare Co2NiO4 nanotubes were by a template together
with a simple electrochemical method followed by a thermal annealing treatment. A
nanosheets-shaped form on the ZnO nanorods firstly and then turns into 3D a hollow
nanostructure is composed of a nanotube with a porous nanosheet. Owing to these
advantageous structural features, the Co2NiO4 nanotubes electrode presents good specific
capacitance, charge/discharge ability, and cycling stability. The Co2NiO4 electrode exhibits
a maximum areal capacitance of 0.17 F/cm2 at 0.1 mA/cm2. The specific capacitance of the
Co2NiO4 electrode shows 95% capacitance retention over 5000 cycles.
Simulation Production of Dimethylether (DME) from Dehydration of Methanol Using Aspen Hysys, 2020
Dimethyl ether (DME) is used primarily as a propellant and a motor fuel alternative, (DME) is mis... more Dimethyl ether (DME) is used primarily as a propellant and a motor fuel alternative, (DME) is miscible with most organic solvents and has a high solubility in water. Recently, the use of (DME) as a fuel additive for diesel engines has been investigated due to its high volatility (desired for cold starting) and high cetane number of 55–60, with the advantage of high efficiency, and low exhaust emissions (no particulates, no Sulphur, and low NOx). Technical quality (DME) is an alternative to liquefied petroleum gas (LPG). The production processes included catalytic dehydration of methanol in an adiabatic fixed-bed reactor and two columns product separations. In this study, the technological process for (DME) synthesis is simulated in Aspen Hysys V3.1 based on the combined parameters of the reaction dynamic model for methanol dehydration reaction, the improved NRTL model of the liquid phase, the PR model of vapor phase was selected as the fluid package as it is able to handle selected pure components (methanol, water, and dimethyl ether). The equilibrium reaction was selected to describe conversion of methanol to DME reaction and it is about 80%. A feasibility study and design of a plant producing 99.9 wt% Dimethyl ether (DME). The plant is designed which is capable of producing 50,000 metric tons of (DME) per year via the catalytic dehydration of methanol over an acid zeolite catalyst.
Supercapacitors, known as ultra capacitors or electrochemical supercapacitors (ESCs), are conside... more Supercapacitors, known as ultra capacitors or electrochemical supercapacitors (ESCs), are considered as promising candidates for energy storage because they have the advantages of higher power densities, longer cycle lives, a short charging time, low maintenance cost, and so forth. There are mainly two kinds of supercapacitors based on the charge and discharge mechanism. The first is carbon-based materials with a large specific surface area, which charge and discharge by an electric double layer mechanism. The second is pseudocapacitance materials (transition metal oxides and conductive polymers), where the charging and discharging is based on the redox reaction of the active materials. Graphene has attracted the most attention in supercapacitors owing to their unique twodimensional structure, remarkable chemical stability, high surface area, and high electrical conductivity. The research of mixed transition metal oxide has also become a hotspot recently. This work concerns the preparation, characterization of Co2NiO4 composite on carbon cloth for high-performance pseudocapacitors. We design and synthesize Co2NiO4 porous nanotubes through a template with a simple electrochemical method followed by a thermal annealing treatment. We prepare Co2NiO4 nanotubes were by a template together with simple the electrochemical method followed by a thermal annealing treatment. A nanosheets-shape form on the ZnO nanorods firstly and then turns in to 3D a hollow nanostructure is composed of a nanotube with a porous nanosheet. Owing to these advantageous structural features, the Co2NiO4 nanotubes electrode presents good specific capacitance, charge/discharge ability, and cycling stability. The Co2NiO4 electrode exhibits a maximum areal capacitance of 0.17 F/cm2 at 0.1 mA/cm2. The specific capacitance of the Co2NiO4 electrode shows 95% capacitance retention over 5000 cycles.
Dimethyl ether (DME) is used primarily as a propellant and a motor fuel alternative, (DME) is mis... more Dimethyl ether (DME) is used primarily as a propellant and a motor fuel alternative, (DME) is miscible with most organic solvents and has a high solubility in water. Recently, the use of (DME) as a fuel additive for diesel engines has been investigated due to its high volatility (desired for cold starting) and high cetane number of 55-60, with the advantage of high efficiency, and low exhaust emissions (no particulates, no Sulphur, and low NOx). Technical-quality (DME) is an alternative to liquefied petroleum gas (LPG). The production processes included catalytic dehydration of methanol in an adiabatic fixed-bed reactor and two columns product separations. In this study, the technological process for (DME) synthesis is simulated in Aspen Hysys V3.1 based on the combined parameters of the reaction dynamic model for methanol dehydration reaction, the improved NRTL model of the liquid phase, the PR model of vapor phase was selected as the fluid package as it is able to handle selected pure components (methanol, water and dimethyl ether). The equilibrium reaction was selected to describe conversion of methanol to DME reaction and it is about 80%. A feasibility study and design of a plant producing 99.9 wt% Dimethyl ether (DME). The plant is designed which is capable of producing 50,000 metric tons of (DME) per year via the catalytic dehydration of methanol over an acid zeolite catalyst.
Dimethyl ether (DME) is used primarily as a propellant and a motor fuel alternative, (DME) is mis... more Dimethyl ether (DME) is used primarily as a propellant and a motor fuel alternative, (DME) is miscible with most organic solvents and has a high solubility in water. Recently, the use of (DME) as a fuel additive for diesel engines has been investigated due to its high volatility (desired for cold starting) and high cetane number of 55-60, with the advantage of high efficiency, and low exhaust emissions (no particulates, no Sulphur, and low NOx). Technical-quality (DME) is an alternative to liquefied petroleum gas (LPG). The production processes included catalytic dehydration of methanol in an adiabatic fixed-bed reactor and two columns product separations. In this study, the technological process for (DME) synthesis is simulated in Aspen Hysys V3.1 based on the combined parameters of the reaction dynamic model for methanol dehydration reaction, the improved NRTL model of the liquid phase, the PR model of vapor phase was selected as the fluid package as it is able to handle selected pure components (methanol, water and dimethyl ether). The equilibrium reaction was selected to describe conversion of methanol to DME reaction and it is about 80%. A feasibility study and design of a plant producing 99.9 wt% Dimethyl ether (DME). The plant is designed which is capable of producing 50,000 metric tons of (DME) per year via the catalytic dehydration of methanol over an acid zeolite catalyst.
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Papers by Ezeddin H . Alshbuki
difficulties face the process of transporting gas through pipelines, including terrain and stages that occur during the
transportation process and this study was based on simulating the transfer of the produced gas from three wells that
were linked Together with a steel pipe network of different lengths and diameters from 3 to 6 inches and a total length
of about 3274 meters connected to the main transportation pipeline with a diameter of 6 inches and by observing the
change in heat loss caused by the piping network. It was shown a decrease in the amount of heat lost from the pipes as
a result of wrapping these pipes with a layer of Asphalt with a thickness of one millimeter to avoid the occurrence of
corrosion of the outer surface and to prevent the formation of hydrates, and with the continued flow of gas in the
steady-state through the network. It was shown through the results obtained from the PIPSYS program. The flow
the pattern was an annular mist of all pipes. The final pressure of the last production line was also calculated after adjusting
the operating pressure of well A with the pressure of the last production line until it reached the desired values of 6895
kpa, 34.61°C and a flow rate of 1300 kg mol per hour, as well as a decrease in the maximum head pressure drop this
part was -9.6 kpa And, by making some adjustments to the fluid package, i.e. by testing three models of state equations
in the gas phase and all results were close, as well as calculating the phase diagram of pressure, temperature, and the
ability to form hydrates in the outlet conditions of the last part of the network.
about 60- 70%, while the rest comes from window and door openings. Thermal insulation is the most
an effective technique used in reducing the heat transferred into the building and thus reducing the
consumption of electric energy used in cooling, where the required amount of electricity is the most
important problem experienced by the residents of the southern regions of Libya.
This paper aims to identify the importance of thermal insulation of the concrete structures in the desert
areas and their role in reducing electricity consumption. In this research, we concluded that the application
of thermal insulation in residential buildings is an important technique in reducing the heat
transferred into the building and reducing the consumption of electric energy is used in the
the appropriate place of the building and appropriate quantity.
by Shell – Libya with well D1, and the northern culmination, was discovered Sirte oil Company in
1991 with well A1. In designing gas production, processing, transport and handling systems, a
complete knowledge of natural gas properties is crucial. For this reason, the purpose of this study
was measurement and prediction of hydrocarbon fluid properties .This study was conducted to
shows the reservoir of natural gas properties analysis of Wafa gas field from gas composition.
Based on the studied composition, it is shown that the Wafa gas is a sweet gas, the viscosity of
the gas is 0. 01095 cp at reservoir formation temperature 80. 28 ℉ and pressure 514. 88 psia , The
gas compressibility factor, real gas density, and gas formation volume factor are 0. 92, 1. 80
lbm ⁄ ft 3 , 0. 02699 ft 3 ⁄ scf , respectively.
carbon non-materials. Their excellent electron transfer and
electrocatalytic properties have attracted much interest in the field of
electrochemistry. In this work graphene as a nanohybrid composites
based on noble metal/metal alloy were applied to study the
electrochemical sensing of hydrogen peroxide and glucose. The main
contents were described as follows. We have developed the design and
synthesis of a new type of high-performance nanocatalysts, i.e. deposit
tiny palladium and platinum alloy nanoparticles on the surface of freestanding
ultrathin nanoporous gold film (Pd&Pt@NPG), and transfer it to
the surface of graphene paper for the fabricate free-standing and flexible
Pd&Pt@NPG/graphene paper, which enables to be used for real-time
tracking the secretion of H2O2 in different types of living human cells.
(ESCs), are considered as promising candidates for energy storage because they have the
advantages of higher power densities, longer cycle lives, a short charging time, low
maintenance cost, and so forth. There are mainly two kinds of supercapacitors based on the
charge and discharge mechanism. The first is carbon-based materials with a large specific
surface area, which charge and discharge by an electric double layer mechanism. The
second is pseudocapacitance materials (transition metal oxides and conductive polymers),
where the charging and discharging is based on the redox reaction of the active materials.
Graphene has attracted the most attention in supercapacitors owing to its unique two-dimensional
structure, remarkable chemical stability, high surface area, and high electrical
conductivity. The research of mixed transition metal oxide has also become a hotspot
recently. This work concerns the preparation, characterization of Co2NiO4 composite on
carbon cloth for high-performance pseudocapacitors. We design and synthesize Co2NiO4
porous nanotubes through a template with a simple electrochemical method followed by a
thermal annealing treatment. We prepare Co2NiO4 nanotubes were by a template together
with a simple electrochemical method followed by a thermal annealing treatment. A
nanosheets-shaped form on the ZnO nanorods firstly and then turns into 3D a hollow
nanostructure is composed of a nanotube with a porous nanosheet. Owing to these
advantageous structural features, the Co2NiO4 nanotubes electrode presents good specific
capacitance, charge/discharge ability, and cycling stability. The Co2NiO4 electrode exhibits
a maximum areal capacitance of 0.17 F/cm2 at 0.1 mA/cm2. The specific capacitance of the
Co2NiO4 electrode shows 95% capacitance retention over 5000 cycles.