الأرشيف

  Pipeline Drag Reducers Abstract Pipeline drag reducers have proven to be an extremely powerful tool in fluid transportation. High molecular weight polymers are used to reduce the frictional pressure loss ratio in crude oil pipelines, refined fuel and aqueous pipelines. Chemical structure of the main used pipeline drag reducers is one of the following…

Prediction of Some Biological Film Charteristics. Abstract: A multi components biofilm model has been developed and discussed which accounts for all well established biological processes with biofilm(s): • Substrate utilization [ aerobically, anoxically and anaerobically]. • Denitrification process. • Nitrification process. • The effect of diffusion and mass transfer limitations. The model has predicted some…

Predictive Corrosion and Failure Control1 Abstract In petroleum operations, corrosion is inevitable. The first line of defense against corrosion is the proper selection of materials of construction of plant process equipment : vessels, tanks, towers, piping, pumps, etc. Combating corrosion is carried out in a predictive ( proactive ) manner in both the design phase…

Preparation and Evaluation of Some Surface Active Sequesteri Abstract: A novel series of chelating agents has been synthesized by the reaction of ethylenediaminetetraacetic acid, citric acid and polyethylene glycol with different molecular weights and different number of moles. The unique structural features of these surfactants have been confirmed by FTIR spectra, elemental analysis and H1NMR…

Preparation of Cellulose Ion Exchanger. Abstract: Viscose fibers were converted to an ion exchanger by grafting it with (1) Diethyl amino ethyl methacrylate (DEAEMA) to give anion exchanger and (2) Methacrylic acid (MAA) to give cation exchanger. Grafting was carried using ferrous cellulose thiocarbonate – H2O2 – Thio urea dioxide (TUDO) redox initiation system. Emphasis…

Project Evaluation under Inflation Condition Abstract This paper analyzes the role of inflation in capital budgeting and attempts to introduce solutions to such implication in order to make the appropriate decision for the firm’ stockholders under these circumstances. Inflation leads to biasness in evaluating the investment projects, due to its impact on the cash flow,…

Protection of Mild Steel Against Sulfides Corrosion in Petro The aggressive properties of the media encountered when drilling for oil derive from the fact that they contain an abundance of mineralized water, as well as hydrogen sulphide and carbon dioxide. Particularly vulnerable to corrosion and installation of old deposits, where highly mineralized water or sometimes…

Recycling of manganese secondary raw material via cold-bond ABSTRACT: Large quantities of fines were produced during the shipping, transportation, handling and storage of manganese ore sinter imported from different countries to Sinai Company for ferromanganese production. These fines are generally considered as valuable secondary raw materials. Hence, they have a potential to be recycled back…

      Reviews on Food Safety Abstract: Food safety is an increasing concern. The desire for rapid, specific methods for the detection of viable potential pathogens has grown into a necessity. Microbial contamination of meat, fresh fruits, and vegetables has become a mounting concern during the last decade due to emphasis on their importance…

  Rheological properties of concentrated alumina slurries, inf Abstract The relationship between the pH, the electrolyte concentrations and the rheological properties of high concentrated alumina slurries in aqueous medium is of great importance because it is considered to be the key to control the stability of the slurries from flocculation. Zeta potential of alumina slurries…