Micron-sized magnetic poly (methyl acrylate) (mPMA) microspheres were prepared by a novel modified suspension polymerization method. mPMA microspheres were highly functionalized by the ammonolysis reaction with ethylenediamine to yield abundant amino groups (-NH2) on the surface. The morphology, magnetic property and surface functionality of the magnetic microspheres were examined by SEM, VSM a...

In the present study, we tested the hypothesis that similar to other mechanical loads, notably cyclic stretch (simulating pre-load), glass microspheres simulating afterload will stimulate the secretion of angiogenic factors. Hence, we employed glass microspheres (average diameter 15.7 microm, average mass 5.2 ng) as a new method for imposing mechanical load on neonatal rat ventricular myocytes ...

We describe the synthesis of magnetic and fluorescent silica microspheres fabricated by incorporating maghemite (gamma-Fe2O3) nanoparticles (MPs) and CdSe/CdZnS core/shell quantum dots (QDs) into a silica shell around preformed silica microspheres. The resultant approximately 500 nm microspheres have a narrow size distribution and show uniform incorporation of QDs and MPs into the shell. We hav...

In this paper, we experimentally studied both the bright-field and fluorescence images of microspheres by conventional and confocal scanning polarization microscopes. A qualitative analysis have been given to show a physical picture on the imaging of the microspheres. Emission spectra from melamine formaldehyde microspheres stained with Ethidium Bromide or covered by thin shell of CdTe nanocrys...

Article history: Received on: 30/08/2013 Revised on: 03/10/2013 Accepted on: 15/10/2013 Available online: 31/10/2013 Azathioprine loaded gelatin microspheres were formulated to control/target drug release in an arthritic joint by magnetic force or intra-articular injection. Glutaraldehyde cross linked microspheres were characterized for drug loading, entrapment efficiency, gas chromatography, m...

Microsphere experiments are useful in measuring regional organ perfusion as well as heterogeneity of blood flow within organs and correlation of perfusion between organ pieces at different time points. A 400 microspheres/piece "rule" is often used in planning experiments or to determine whether experiments are valid. This rule is based on the statement that 400 microspheres must lodge in a regi...

Microspheres containing indinavir sulfate were prepared by the emulsion solvent evaporation technique using surfactant sorbitan monooleate 80. The evaluation reports for Fourier-transform infrared spectroscopy and X-ray diffraction taken to see whether altered physicochemical features of produced microspheres. Scanning electron microscopy was used observe surface topography When 80 employed at ...

Abstract The aim of the research was to identify influence different microencapsulated reaction time on morphology, size, infrared spectral, thermal and micromechanical properties melamine formaldehyde microspheres, synthesised with modified in situ polymerisation. Microspheres are particles a blurred boundary core shell due their same composition. synthesis microspheres paused after 1, 3, 9 15...

Different isolated strains of Leuconostoc mesenteroides produce dextran compared with that of L. mesenteroides NRRL B-512 F. Among nine newly isolated strains, strains PCSIR-4 and PCSIR-9 produced dextran of different quality. Using these two newly isolated strains, the development of dextran coincided closely with the disappearance of sucrose. The yield of dextran increased during growth and m...

Purpose: To rationalize the use of surfactants by preparing Salbutamol sulphate microspheres using two types of surfactants, Tween 80 and Span 80 and study their effects on different characteristics of the microspheres. Methods: Microspheres containing Salbutamol sulphate was prepared by emulsion solvent evaporation technique. Infrared Spectroscopy, Differential Scanning Colorimetry and X-Ray D...