Density of 15-microm microspheres after left atrial application is the standard measure of regional perfusion. In the heart, substantial differences in microsphere density are seen at spatial resolutions <5 ml, implying perfusion heterogeneity. Microsphere deposition imaging permits a superior evaluation of the distribution pattern. Therefore, fluorescent microspheres (FMS) were applied, FMS de...

background: different methods have been used for bcg vaccination. alginate microspheres are useful in delivery of vaccines to the gastrointestinal tract by oral route. objective: to compare the immune response following oral microencapsulated and subcutaneous (sc) route administration of bcg vaccine in balb/c mice. methods: alginate microspheres were produced by an internal emulsification metho...

The preparation of monodisperse azobenzene (Azo) polymer microspheres by dispersion polymerization was reported. photo-induced fusion Azo successfully achieved during the process reversible trans-cis-trans photoisomerization units, and induced various unique “microsphere molecular” clusters or polymers”. Encouraged this interesting phenomenon, microsphere different topological structures were s...

the purpose of the research was to formulate microspheres of acyclovir (acv) using mucoadhesive polymers, sodium alginate and chitosan. calcium chloride was used as the ionotropic gelling agent. sodium alginate was crosslinked by calcium chloride leading to a slower release of the drug. chitosan which is a cationic polymer interacted with sodium alginate, an anionic polymer, to form an interpol...

BACKGROUND Revascularization of the heart after myocardial infarction (MI) using growth factors delivered by hydrogel-based microspheres represents a promising therapeutic approach for cardiac regeneration. Microspheres have tuneable degradation properties and support the prolonged release of soluble factors. Cardiac patches provide mechanical restraint, preventing dilatation associated with ve...

Photonic jets (PJs) obtained by illuminating a dielectric microsphere have recently shown to provide an efficient and cost‐effective means of laser‐writing localizing single‐photon emitters with sub‐diffraction precision. The fabrication technique relies on the photoinduced formation GaAsN quantum dots (QDs) that are self‐aligned microsphere, which in turn enhances collection efficiency their e...

Novel materials synthesis techniques were used to fabricate nanostructured and macroporous semiconducting metal oxide (SMO) films exhibiting exceptionally high sensitivity to reducing and oxidizing gases, as compared to conventionally prepared specimens. Increased sensitivity resulted from an elevated surface area and reduced specimen cross section. Several processing routes were pursued includ...

We study a scheme for entangling two-level atoms located close to the surface of a dielectric microsphere. The effect is based on medium-assisted spontaneous decay, rigorously taking into account dispersive and absorptive properties of the microsphere. We show that even in the weak-coupling regime, where the Markov approximation applies, entanglement up to 0.35 ebits between two atoms can be cr...

A novel hybrid fiber taper is proposed and demonstrated as the coupler in a microsphere laser system. The pump wave and the laser emission, respectively, are more efficiently coupled to and from the sphere modes with this taper structure. A 980-nm pumped erbium-ytterbium codoped phosphate microsphere laser is demonstrated in the 1550-nm band. As much as 112microW of single-frequency laser outpu...