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Articles 1 - 4 of 4
Full-Text Articles in Engineering
Preparation And Characterization Of Reactive Composites Combining Boron With Mixed Oxides, Purvam Mehulkumar Gandhi
Preparation And Characterization Of Reactive Composites Combining Boron With Mixed Oxides, Purvam Mehulkumar Gandhi
Theses
Thirteen liquids have been explored as Process Control Agents (PCAs) for high-energy mechanical milling of two metal oxide powders, CuO and Bi2O3, with the practical purpose to reduce the sizes of powder particles and refine their crystal structure. Multiple liquid properties have been considered to analyze their effect on evolution of both particle and crystallite sizes during milling for each oxide. Experimental data were analyzed using the δ-AICc (Akaike Information criterion) correlation function applied to linear relations between liquid properties and powder characteristics. Multiple linear correlation models were ranked based on the highest log-likelihood and the …
Calcium Phosphate/Ionic Liquid Ptfe Composite Membrane For Proton Exchange Membrane Fuel Cell Applications, Ahmad Ibrahim Hasan Ka’Ki
Calcium Phosphate/Ionic Liquid Ptfe Composite Membrane For Proton Exchange Membrane Fuel Cell Applications, Ahmad Ibrahim Hasan Ka’Ki
Theses
The dependence on fossil fuels can be possibly reduced by the utilization of renewable energy sources. Fuel cells offer a promising alternative for renewable power generation. Among the various types of fuel cells, Proton Exchange Membrane Fuel Cell (PEMFC) is recently attracting attention due to its several advantages of high-power density, all solid structure, and silent operation. The diverse types of materials used in this type of fuel cell raised drawbacks related to fuel cell cost and durability. By far, Nafion of DuPont is still the current state-of-the-art membrane for PEMFCs. It is known for its high ionic conductivity and …
Developing A New Formula For Predicting Oil Recovery Factor In Water Flooded-Heterogeneous Reservoirs, Mohamed Khaled Aljifri
Developing A New Formula For Predicting Oil Recovery Factor In Water Flooded-Heterogeneous Reservoirs, Mohamed Khaled Aljifri
Theses
In this work, two sets of empirical correlations were developed for predicting the recovery factor (RF) in water-flooded layered oil reservoirs. The first set of these correlations encompasses four key parameters believed to have a significant impact on waterflooding performance, namely, reservoir heterogeneity (permeability variation coefficient), injected water viscosity, permeability anisotropy (ratio of vertical permeability to horizontal permeability), and water injection rate. This first set consists of two expanded forms, one for predicting the RF at water breakthrough time (BT) and the other for predicting the RF at the end of the project (EOP). Out of the aforementioned four key …
Poly (Lactic Acid)/Nanoclay Nanocomposites For Packaging Applications, Maissa Akram Adi
Poly (Lactic Acid)/Nanoclay Nanocomposites For Packaging Applications, Maissa Akram Adi
Theses
With increasing stringent environmental regulations and attempts to reduce dependence on fossil fuels for polymer production, bio-based polymers are receiving appreciable global attention. In this context, bio-based poly (lactic acid) (PLA) is one of the most frequently used polymers in packaging applications. However, despite of its high versatility, this polymer is limited in packaging applications due to its low mechanical properties. The two-dimensional nanofillers such as nanoclay and graphene are well known for improving the thermo-mechanical properties of polymers at low concentrations. However, increasing higher filler concentration to improve barrier properties of polymers reduces their mechanical properties which is a …