Materials Science and Engineering Commons^™

An Investigation On Biocompatibility Of Bio-Absorbable Polymer Coated Magnesium Alloys, Sushma Amruthaluri

FIU Electronic Theses and Dissertations

Advances in biomaterials have enabled medical practitioners to replace diseased body parts or to assist in the healing process. In situations where a permanent biomaterial implant is used for a temporary application, additional surgeries are required to remove these implants once the healing process is complete, which increases medical costs and patient morbidity. Bio-absorbable materials dissolve and are metabolized by the body after the healing process is complete thereby negating additional surgeries for removal of implants.

Magnesium alloys as novel bio-absorbable biomaterials, have attracted great attention recently because of their good mechanical properties, biocompatibility and corrosion rate in physiological environments. …

High Pressure And Low Temperature Study Of Ammonia Borane And Lithium Amidoborane, Shah Najiba

FIU Electronic Theses and Dissertations

Hydrogen has been considered as a potentially efficient and environmentally friendly alternative energy solution. However, one of the most important scientific and technical challenges that the “hydrogen economy” faces is the development of safe and economically viable on-board hydrogen storage for fuel cell applications, especially to the transportation sector. Ammonia borane (BH₃NH₃), a solid state hydrogen storage material, possesses exceptionally high hydrogen content (19.6 wt%).However, a fairly high temperature is required to release all the hydrogen atoms, along with the emission of toxic borazine. Recently research interests are focusing on the improvement of H₂ discharge …

Influence Of Chemical Composition And Water On The Bulk Modulus Of Pyrope, Shu Huang

FIU Electronic Theses and Dissertations

Garnets are major silicates from the upper mantle to the transition zone. Elastic properties of garnets are essential to interpret the variation of seismic velocities at different depths and construct a model of the Earth’s composition. Due to the chemical flexibility at octahedron sites of the crystal structures, garnets usually exist with multiple components and have many composition variations. Pyrope is an important member in the garnet group. Fe²⁺-Mg²⁺ substitution in pyrope is one of the common solid solutions. We have synthesized and measured three synthetic solid solutions samples (Py₈₃Alm₁₇, Py₅₄Alm …