M. A. Sadek
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View article: Evaluation of Shear Bond Strength (SBS) of Orthodontic Brackets bonded to Lithium Disilicate glass-ceramics (E-Max) following Etching with Hydrofluoric Acid (HF) versus Er:YAG Laser and Er:Cr:YSGG Laser
Evaluation of Shear Bond Strength (SBS) of Orthodontic Brackets bonded to Lithium Disilicate glass-ceramics (E-Max) following Etching with Hydrofluoric Acid (HF) versus Er:YAG Laser and Er:Cr:YSGG Laser Open
View article: Synthesis of homologous series of surfactants from renewable resources, structure–properties relationship, surface active performance, evaluation of their antimicrobial and anticancer potentialities
Synthesis of homologous series of surfactants from renewable resources, structure–properties relationship, surface active performance, evaluation of their antimicrobial and anticancer potentialities Open
Sugar esters display surface-active properties, wetting, emulsifying, and other physicochemical phenomena following their amphipathic nature and recognize distinct biological activity. The development of nutritional pharmaceuticals and oth…
View article: Removal of lead metal from groundwater using graphene oxide nanosheet functionalized with ethylenediaminetetraacetic acid
Removal of lead metal from groundwater using graphene oxide nanosheet functionalized with ethylenediaminetetraacetic acid Open
View article: Influence of urea on electrocatalytic oxidation of ethylene glycol on porous CuOx/Cu foam anode in alkaline medium
Influence of urea on electrocatalytic oxidation of ethylene glycol on porous CuOx/Cu foam anode in alkaline medium Open
View article: Evaluation of variable speed drives to improve energy efficiency and reduce gas emissions: Case study
Evaluation of variable speed drives to improve energy efficiency and reduce gas emissions: Case study Open
Variable speed drives are the most promising technique for reducing electric motors' energy consumption. This paper discusses energy savings by installing variable speed drives to control rotating equipment motors such as pumps, compressor…
View article: Effects of Gamma Radiation on Poly(vinyl alcohol)/ Poly(vinyl pyrrolidone)/Nickel nanocomposite Films and Evaluation of its Dosimetric Characteristics
Effects of Gamma Radiation on Poly(vinyl alcohol)/ Poly(vinyl pyrrolidone)/Nickel nanocomposite Films and Evaluation of its Dosimetric Characteristics Open
A NEW medium-high dose label dosimeter film based on using gamma radiation in executing reduction for Nickel ions to Nickel-metal inside the host polymer matrix, poly (vinyl alcohol)/ poly (vinyl pyrrolidone) is prepared.The results of abs…
View article: Water Absorption Enhancement of Sodium Poly Acrylate and Poly(2-Acrylamido-2-Methylpropane Sulphonic Acid) Based Hydrogel Mixtures
Water Absorption Enhancement of Sodium Poly Acrylate and Poly(2-Acrylamido-2-Methylpropane Sulphonic Acid) Based Hydrogel Mixtures Open
Introduction: Hydrogels are hydrophilic polymers which are cross-linked to form three-dimensional structures, which can absorb, swell and retain huge amounts of water or aqueous fluids. Objective: This paper reports the preparation and cha…
View article: Simultaneous Removal of Nitrate and Phosphate Ions from Aqueous Solutions Using Fume Dust from Electric Arc Furnace Industrial Waste
Simultaneous Removal of Nitrate and Phosphate Ions from Aqueous Solutions Using Fume Dust from Electric Arc Furnace Industrial Waste Open
The removal of nitrate and phosphate ions from wastewater has a major concern nowadays. It is necessary to remove nitrate and phosphate ions from wastewater. Adsorption becomes a promising method for phosphate and nitrate ions removal from…
View article: MECHANICAL CHARACTERISTICS FOR COMPOSITE MATERIALS USING COMMERCIAL EPOXY RESINS AND DIFFERENT FILLERS
MECHANICAL CHARACTERISTICS FOR COMPOSITE MATERIALS USING COMMERCIAL EPOXY RESINS AND DIFFERENT FILLERS Open
Epoxy resins are thermoset polymers that consist of epoxide groups in their molecular structure. It shows many attractive characteristics like strong adhesion, excellent mechanical strength, low shrinkage, excellent insulator, excellent ch…
View article: REMOVAL OF METHYLENE BLUE BY ABSORPTION OF WATER HYACINTH-DERIVED ACTIVATED CARBON EMBEDDED WITH NICKEL NANOPARTICLES
REMOVAL OF METHYLENE BLUE BY ABSORPTION OF WATER HYACINTH-DERIVED ACTIVATED CARBON EMBEDDED WITH NICKEL NANOPARTICLES Open
Nanoparticles have proven their dominance in many fields of research in this era. Such dominance resulted from outstanding physical and chemical properties amongst other materials, led to a wide focus from different researchers in various …
View article: METHYLENE BLUE REMOVAL THROUGH ADSORPTION OF WATER HYACINTH USING COBALT NANOPARTICLES SUPPORTED ON ACTIVE CARBON
METHYLENE BLUE REMOVAL THROUGH ADSORPTION OF WATER HYACINTH USING COBALT NANOPARTICLES SUPPORTED ON ACTIVE CARBON Open
In this research, active carbon-based catalyst synthesis and characterization were investigated for different applications in catalysis. The active carbon-based catalyst was combined with metal oxides to dye methylene blue (MB) removal. Wa…
View article: Removal of Methylene Blue by Adsorption of Water Hyacinth Derived Active Carbon Embedded with Cobalt Nanoparticles
Removal of Methylene Blue by Adsorption of Water Hyacinth Derived Active Carbon Embedded with Cobalt Nanoparticles Open
In this research, active carbon-based catalyst synthesis and characterization were tested for potential catalysts to be used in dye removal of methylene blue (MB). Water hyacinth is one of the major problems that is facing humankind and es…
View article: Detection of blaTEM, blaSHV, and blaCTX-M genes among the Extended-Spectrum β-Lactamases (ESβLs) producing Enterobacteriaceae isolated from hospital-acquired infections and community in Egypt.
Detection of blaTEM, blaSHV, and blaCTX-M genes among the Extended-Spectrum β-Lactamases (ESβLs) producing Enterobacteriaceae isolated from hospital-acquired infections and community in Egypt. Open
Background: Bacteria are resistant to an antibiotic such as Escherichia coli, Klebsiella pneumonia, and Enterobacter sp.responsible for morbidity in worldwide.ESβLs are a group of plasmids encoded enzymes that have the efficacy to hydrolyz…
View article: The Use of Anion - Exchange Resin (A 162) as A Bromine Carrier for the Bromination Of 2 Acylfurans. (Dept. P)
The Use of Anion - Exchange Resin (A 162) as A Bromine Carrier for the Bromination Of 2 Acylfurans. (Dept. P) Open
View article: Superior spectral performance of decoy flares compositions via inclusion of graphite as a black body emitter
Superior spectral performance of decoy flares compositions via inclusion of graphite as a black body emitter Open
Graphite particles can offer high interfacial surface area as well as high emissivity as black body; therefore it can find wide applications in advanced decoy flares. In the current study, graphite particles of 100 µm size, were employed w…
View article: Preparation and Analysis of Cement Bricks Based on Rice Straw
Preparation and Analysis of Cement Bricks Based on Rice Straw Open
In Egypt, rice straw is burnt as an easy and the cheap method to get rid of it leads to making a giant black cloud covers Cairo and southern delta governorates.Main purpose of this research is to produce green brick of cement and in-expens…
View article: CEMENT BRICKS BASED ON SHREDDED AUTOMOBILE TIRES
CEMENT BRICKS BASED ON SHREDDED AUTOMOBILE TIRES Open
The essential target of this is to make good qualified bricks with economic background and to have several uses than ordinary brick that is utilized in construction of homes or any building.From these useful properties of those blocks are …
View article: EFFECT OF ADDITION OF NANO SILICON DIOXIDE TO CEMENT BRICKS: PREPARATION AND CHARACTERICTICS
EFFECT OF ADDITION OF NANO SILICON DIOXIDE TO CEMENT BRICKS: PREPARATION AND CHARACTERICTICS Open
The aim of the research is to design and produce a durable, and high load, bearing build constructing bricks based on cement, sand, and aggregates with the addition of Nano silica, studying the effect of the added materials to get a backgr…
View article: Enhanced Water Electrolysis: Effect of Temperature on the Oxygen Evolution Reaction at Cobalt Oxide Nanoparticles Modified Glassy Carbon Electrodes
Enhanced Water Electrolysis: Effect of Temperature on the Oxygen Evolution Reaction at Cobalt Oxide Nanoparticles Modified Glassy Carbon Electrodes Open
View article: Synthesis and characterization of PVP based catalysts for selected application in catalysis
Synthesis and characterization of PVP based catalysts for selected application in catalysis Open
This research aims to study the catalyst activity in specific reactions and the characteristics of the catalyst in order to optimize its performance. This research investigates PVP based catalysts and their properties and applications. PVP…
View article: Microwave Assisted Synthesis of Binary Metallic Oxides for Catalysis Applications
Microwave Assisted Synthesis of Binary Metallic Oxides for Catalysis Applications Open
Herein, versatile, and reproducible method to prepare binary metal oxides via microwave assisted synthesis. Catalysts are substances that basically speeds up chemical reactions. Ideally, bonds are formed between the catalysts and the react…
View article: Decorative Articles Based on Polymeric Materials
Decorative Articles Based on Polymeric Materials Open
The aim of the research is to create decorative articles based on polymeric materials, study the effects of fillers and the type of moulds that it can cope with the exothermic reaction nature of resin to create a scientific background on t…
View article: Composite Materials Based on Twaron and Nano Materials
Composite Materials Based on Twaron and Nano Materials Open
This research aims to participate in producing body shield that can overcome pervious drawbacks using behaviour of shear thickening fluid. Initially, the rheological behaviour of silica-polyethylene glycol shear thickening fluid is examine…
View article: Hydrothermal Preparation of Palladium Supported on Magnetite for Catalysis Applications
Hydrothermal Preparation of Palladium Supported on Magnetite for Catalysis Applications Open
Herein, versatile, and reproducible method to prepare Pd/Fe3O4 via hydrothermal synthesis. The vital role of this catalyst is in its potential use in CO oxidation catalysis. The Pd/Fe3O4 shows a distinctive activity. TEM images confirmed t…
View article: Microwave-Assisted Synthesis of Graphene Supported Hexagonal Magnetite for Applications in Catalysis
Microwave-Assisted Synthesis of Graphene Supported Hexagonal Magnetite for Applications in Catalysis Open
Herein, we report a rapid one-step synthetic method using microwave irradiation for growing magnetite nanocrystals on reduced graphene oxide sheets. This developed strategy allows decorating graphene sheets with magnetite nanocrystals of w…
View article: Physico-Chemical Characteristics of Ethanol–Diesel Blend Fuel
Physico-Chemical Characteristics of Ethanol–Diesel Blend Fuel Open
In this research we are discussing the physicochemical characteristics of sweet diesel after desulphurization alone and also these characteristics are tested with the adding of high purity HPLC ethanol (99.9%). Those fuel properties of eth…
View article: High Octane Number Gasoline-Ether Blend
High Octane Number Gasoline-Ether Blend Open
Gasoline produced in Egypt is a low-grade gasoline that contains high concentration of harmful components that are having a toll on our environment. In addition, those pollutants cause countless diseases and deaths annually to the Egyptian…
View article: Hydrothermal synthesis of graphene supported Pd/Fe3O4 nanoparticles as efficient magnetic catalysts for Suzuki Cross – Coupling
Hydrothermal synthesis of graphene supported Pd/Fe3O4 nanoparticles as efficient magnetic catalysts for Suzuki Cross – Coupling Open
This research reports a reproducible, reliable, and efficient method for preparing palladium nanoparticles dispersed on a composite of Fe3O4 and graphene as an active catalyst with high efficiency for being used in Suzuki cross – coupling …
View article: Preparation of insulating material based on rice straw and inexpensive polymers for different roofs
Preparation of insulating material based on rice straw and inexpensive polymers for different roofs Open
Fossil fuel saving is part of the 21th century goal. One of the largest sectors that consumes energy is the building sector since it consumes 40% of the total energy in Europe through heating and cooling. Thus, the need of minimizing the e…
View article: Insulating material based on shredded used tires and inexpensive polymers for different roofs
Insulating material based on shredded used tires and inexpensive polymers for different roofs Open
Thermal insulation is the ability of the material to prevent or reduce the heat transfer through the insulating material or between thermally contacted objectives. The increasing of the greenhouse effect leads to a continuous rising of the…