Ahmed Abdelhafez
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View article: Preduodenal portal vein: a case series of variable clinical presentations and surgical implications
Preduodenal portal vein: a case series of variable clinical presentations and surgical implications Open
Aim of the study To present a case series of four pediatric patients with PDPV, each with a different clinical presentation and surgical management. Methods We retrospectively reviewed four cases of PDPV managed at our institution. Two cas…
View article: On the effects of oxygen fraction on stability and combustion characteristics of dual-swirl oxy-methane flames: An experimental and numerical study
On the effects of oxygen fraction on stability and combustion characteristics of dual-swirl oxy-methane flames: An experimental and numerical study Open
The effects of oxygen fractions of primary and secondary streams on flow/flame interactions, flame stability and macrostructure, and combustion and emissions characteristics of premixed oxy-methane (CH4/CO2/O2) flames were studied experime…
View article: Stability and combustion characteristics of dual annular counter-rotating swirl oxy-methane flames: Effects of equivalence and velocity ratios
Stability and combustion characteristics of dual annular counter-rotating swirl oxy-methane flames: Effects of equivalence and velocity ratios Open
An experimental study was carried out to investigate flow/flame interactions, stability, combustion, and emissions properties of CH4/O2/CO2 stratified flames stabilized on a dual annular counter-rotating swirl (DACRS) burner for gas turbin…
View article: Performance and Sustainability of Organic and Conventional Cotton Farming Systems in Egypt: An Environmental and Energy Assessment
Performance and Sustainability of Organic and Conventional Cotton Farming Systems in Egypt: An Environmental and Energy Assessment Open
Cotton cultivation is resource-intensive, posing significant environmental challenges, especially with conventional farming methods. Growing interest in sustainable agriculture drives the exploration of organic farming as a potential alter…
View article: On the Effects of Flow/Mixture Stratification on Combustion/Stability Behaviors of Dual-Swirl Oxy-Methane Flames: Experimental and Numerical Study
On the Effects of Flow/Mixture Stratification on Combustion/Stability Behaviors of Dual-Swirl Oxy-Methane Flames: Experimental and Numerical Study Open
View article: Stability and Combustion Characteristics of Dual Annular Counter-Rotating Swirl Oxy-Methane Flames: Effects of Equivalence and Velocity Ratios
Stability and Combustion Characteristics of Dual Annular Counter-Rotating Swirl Oxy-Methane Flames: Effects of Equivalence and Velocity Ratios Open
View article: On the Effects of Oxygen Fraction on Stability and Combustion Characteristics of Dual-Swirl Oxy-Methane Flames: An Experimental and Numerical Study
On the Effects of Oxygen Fraction on Stability and Combustion Characteristics of Dual-Swirl Oxy-Methane Flames: An Experimental and Numerical Study Open
View article: Isolation and Characterization of Probiotics from Various Food Products as Potential Human Food Additives
Isolation and Characterization of Probiotics from Various Food Products as Potential Human Food Additives Open
In this study, human-safe lactic acid microorganisms (LAM) were isolated from food samples to be used as potential additives for human food. Samples from various food sources (artisanal cheeses, fermented chickpeas, fermented rice, natural…
View article: Stability and Combustion Characteristics of Dual Annular Counter-Rotating Swirl Oxy-Methane Flames: Effects of Equivalence and Velocity Ratios
Stability and Combustion Characteristics of Dual Annular Counter-Rotating Swirl Oxy-Methane Flames: Effects of Equivalence and Velocity Ratios Open
View article: Mesenchymal Stem Cells Versus Their Conditioned Medium for Managing Systemic Sclerosis Associated Arthritis Rat Model: Histological and Immunohistochemical Study
Mesenchymal Stem Cells Versus Their Conditioned Medium for Managing Systemic Sclerosis Associated Arthritis Rat Model: Histological and Immunohistochemical Study Open
View article: Flow/flame and emissions fields of premixed oxy-methane stratified flames in a dual annular counter-rotating swirl burner
Flow/flame and emissions fields of premixed oxy-methane stratified flames in a dual annular counter-rotating swirl burner Open
View article: Towards using UAV for improving 5G cellular communication systems
Towards using UAV for improving 5G cellular communication systems Open
Unmanned aerial vehicles (UAVs) have sparked a lot of interest in the wireless networking community as an emerging subject in aerial robotics. The UAV environment can be used to improve UAV communications in various ways. These smart devic…
View article: An Optimized Protocol of M2M Authentication for Internet of Things (IoT)
An Optimized Protocol of M2M Authentication for Internet of Things (IoT) Open
The Internet of Things (IoT) consists of sensors, networks, and services to connect and control production systems. Machine-to-Machine (M2M) communication technology is considered as a key underlying technology for building Industrial IoT …
View article: Role of Adiabatic Flame Temperature on Controlling Operability of a Micromixer-Based Gas Turbine Combustor Holding Premixed Oxy-Flames for Carbon Capture
Role of Adiabatic Flame Temperature on Controlling Operability of a Micromixer-Based Gas Turbine Combustor Holding Premixed Oxy-Flames for Carbon Capture Open
View article: Biological Control of Green Bean Damping-off Disease Caused by Rhizoctonia solani by Streptomyces parvulus Strain 10d
Biological Control of Green Bean Damping-off Disease Caused by Rhizoctonia solani by Streptomyces parvulus Strain 10d Open
THIS STUDY aimed to evaluate the efficacy of applying spores and chitinase enzyme of Streptomyces parvulus strain 10d in biological control of damping-off disease caused by Rhizoctonia solani in green beans (Phaseulus vulgaris) and compare…
View article: Novel Framework for Secure Handover Authentication Protocol for 5G Mobile Network
Novel Framework for Secure Handover Authentication Protocol for 5G Mobile Network Open
This paper presents a comprehensive solution for secret key generation and user authentication for 5G mobile networks. Our solution exploits the integration between physical layer and cryptographic security primitives. The presented secure…
View article: Mitigating the Side Channel Power Analysis Attacks using New Variable Mapping Substitution Technique
Mitigating the Side Channel Power Analysis Attacks using New Variable Mapping Substitution Technique Open
Side-channel attack has been a real threat against many cryptographic embedded systems. In this attack, the internal data is retrieved directly by analyzing the power magnitude according to the fact that there is a considerable difference …
View article: Effect of chitosan and salicylic acid as exogenous elicitors on growth and biochemical constituents of broccoli seed sprouts
Effect of chitosan and salicylic acid as exogenous elicitors on growth and biochemical constituents of broccoli seed sprouts Open
The effect of chitosan and salicylic acid treatments to investigate the seedling growth parameters of Broccoli seed sprouts (Tiburon f1) cultivar was the aim of this study. Salicylic Acid and Chitosan are the )elicitors( that stimulate the…
View article: MANAGEMENT OF ARTERIAL COMPLICATIONS AFTER LIVING DONOR LIVER TRANSPLANTATION
MANAGEMENT OF ARTERIAL COMPLICATIONS AFTER LIVING DONOR LIVER TRANSPLANTATION Open
Background: Liver transplantation is perceived as the only curative treatment for patients with end-stage liver disease.Arterial complications are one of the most serious complications after living donor liver transplantation (LDLT). Aim o…
View article: GROWTH AND PRODUCTIVITY OF EGGPLANT AS AFFECTED BY PINK PIGMENTED FACULTATIVE METHYLOTROPHIC BACTERIA
GROWTH AND PRODUCTIVITY OF EGGPLANT AS AFFECTED BY PINK PIGMENTED FACULTATIVE METHYLOTROPHIC BACTERIA Open
The present study was suggested as an attempt to investigate the effects of Pink Pigmented Facultative Methylotrophic Bacteria (PPFM) dipping and foliar spray on vegetative growth and yield of eggplant (Solanum melongena L.). Field experim…
View article: INFLUENCE OF SPROUTING USING BIOTIC AND ABIOTIC ELICITORS ON CHEMICAL COMPOSITION OF RADISH SEEDS (RAPHANUS SATIVUS)
INFLUENCE OF SPROUTING USING BIOTIC AND ABIOTIC ELICITORS ON CHEMICAL COMPOSITION OF RADISH SEEDS (RAPHANUS SATIVUS) Open
Germination is a way to improve agricultural productivity and easily to use by low income families, in particular with using some elicitors in germination for enhancing the nutrition value of the seeds by sprouting. For their highly metabo…
View article: Efficient Modified Intra-MME Handover Authentication and Key Management Protocol for LTE Networks
Efficient Modified Intra-MME Handover Authentication and Key Management Protocol for LTE Networks Open
Long Term Evolution (LTE) is the standard for high-speed wireless communication for mobile devices and data terminals.Although, the 3 rd Generation Partnership Project (3GPP) has specified some security mechanisms to insure the security of…
View article: FUNGAL BIOTREATMENT OF OLIVE MILL WASTE WATER
FUNGAL BIOTREATMENT OF OLIVE MILL WASTE WATER Open
The current study was aim to remediate olive mill waste water (OMWW) to reduce its phenol content and Chemical Oxygen Demand (COD) using fungal isolates. OMWW samples were drawn from the outlet of olive presser at Agriculture Research cent…
View article: Soil Fertility Status of Some Agricultural Areas in El -Kharaga Oasis, New Valley, Egypt
Soil Fertility Status of Some Agricultural Areas in El -Kharaga Oasis, New Valley, Egypt Open
Macro elements availability in soils is an important aspect in context of soil fertility and agricultural productivity. This study was performed to determine the levels of some macro elements availability in El-kharga oasis soils, New Vall…
View article: MECHANICAL BRUISING TO STRAWBERRY CAUSED BY VIBRATIONAL EQUIPMENT
MECHANICAL BRUISING TO STRAWBERRY CAUSED BY VIBRATIONAL EQUIPMENT Open
Packaged strawberry of two cultivars grown in Egypt were submitted to vibrational equipment.During test, the accelerations at three different positions of the column of crates were measured.Vibrational energy during transportation fruits w…
View article: Comparative Study of Algebraic Attacks
Comparative Study of Algebraic Attacks Open
Cryptographic schemes have an algebraic structure and can be described as multivariate polynomial equations.Even though algebra is the default tool in the cryptanalysis of asymmetric cryptosystems, there has been recently an increase in in…
View article: Efficient and Secure Key Management Scheme for Mobile Ad Hoc Networks
Efficient and Secure Key Management Scheme for Mobile Ad Hoc Networks Open
View article: Efficient and Secure Key Management Scheme for Mobile Ad Hoc Networks
Efficient and Secure Key Management Scheme for Mobile Ad Hoc Networks Open
A Mobile Ad-Hoc Network (MANET) is a collection of wireless mobile nodes that is self-organized to form an arbitrary topology with the absence of fixed infrastructure or centralized administration .In such environment security has become a…