Metal/polymer nanocomposites are of increasing importance with their tunable
properties being used in catalysis and sensors. Previous studies have focused on
the effects of metal content, molecular weight of polymer and reaction conditions on the structure- property relationship of the metal/polymer nanocomposites. This thesis focuses on the effect of two...
Low-Density Parity-check (LDPC) codes have attracted considerable attention due to their capacity approaching performance over AWGN channel and highly parallelizable decoding schemes. They have been considered in a variety of industry standards for the next generation communication systems. In general, LDPC codes achieve outstanding performance with large codeword lengths (e.g.,...
The Gd3+ ion has been used to induce quantum splitting in luminescent
materials by using cross-relaxation energy transfer (CRET). In Nd:LiGdF4, quantum
splitting results from a two-step CRET between Gd3+ and Nd3+, first involving a
transition 6G→6I on Gd3+ and an excitation within the 4f3 configuration of Nd3+
followed by...
Introduction: A bone deficit is found to persist five years following a hip fracture and 10 years post tibial fracture in adults. We examined the effect of whole body vibration (Vib) as a means for enhancing whole body composition and bone recovery following hindlimb unloading (HU) of adult female rats....
This thesis is an investigation of the natural products deriving from marine algae and cyanobacteria and has resulted in the discovery of eleven new secondary metabolites. The structure elucidations of these new molecules were performed using a variety of spectroscopic techniques. Four new macrolides were isolated and characterized from the...
RNA silencing pathways are required for a wide variety of processes in most
eucaryotes. In plants, small-interfering RNA (siRNA) arising from transposons and other
repetitive sequences is associated with heterochromatin formation and maintenance.
MicroRNAs and trans-acting siRNAs encoded at discrete loci function as negative regulators of
gene expression by triggering...