13 research outputs found
Visible spectrum quantum light sources based on InxGa1–xN/GaN Quantum Dots
We present a method for designing quantum
light sources, emitting in the visible band, using wurtzite
InxGa1−xN quantum dots (QDs) in a GaN matrix. This system
is significantly more versatile than previously proposed
arsenide- and phosphide-based QDs, having a tuning range
exceeding 1 eV. The quantum mechanical configuration
interaction method, capturing the fermionic nature of
electrons and associated quantum effects explicitly, is used to
find shapes and compositions of dots to maximize the
excitonic dipole matrix element and optimize the biexciton
binding energy. These results provide QD morphologies
tailored for either bright single-photon emission or entangledphoton-
pair emission at any given wavelength in the visible
spectrum
Cyclosporine A-induced changes to erythrocyte redox balance is time course-dependent
Cyclosporine A-treated transplant recipients develop pronounced cardiovascular disease and have increased oxidative stress and altered antioxidant capacity in erythrocytes and plasma. These experiments investigated the time-course of cyclosporine A-induced changes to redox balance in plasma and erythrocytes. Rats were randomly assigned to either a control or cyclosporine A-treated group. Treatment animals received 25 mg/kg of cyclosporine A via intraperitoneal injection for either 7 days or a single dose. Control rats were injected with the same volume of the vehicle. Three hours after the final injections, plasma was analysed for total antioxidant status, a-tocopherol, malondialdehyde, and creatinine. Erythrocytes were analysed for reduced glutathione (GSH), alpha-tocopherol, methaemoglobin, malondialdehyde, and the activities of superoxide dismutase, catalase, GSH peroxidase, and glucose-6-phosphate dehydrogenase (G6PD). Cyclosporine A administration for 7 days resulted in a significant increase (P 0.05) between groups following a single dose of cyclosporine A in any of the measures. In summary, cyclosporine A alters erythrocyte redox balance after 7 days administration, but not after a single dose