Perez Roldan

Antibiotic Consumption Point Prevalence Survey in a Teaching Hospital in Guatemala

Quantitative confocal phase imaging by synthetic optical holography.

We demonstrate quantitative phase mapping in confocal optical microscopy by applying synthetic optical holography (SOH), a recently introduced method for technically simple and fast phase imaging in scanning optical microscopy. SOH is implemented in a confocal microscope by simply adding a linearly moving reference mirror to the microscope setup, which generates a synthetic reference wave analo...

Inverse Halftoning using Neural Networks based methods

Recently inverse halftoning techniques are applied in many image processing applications, in which an efficient inverse halftoning method, that provides high quality gray-scale image from any binary halftone image, is required. In this paper we propose two neural networks based inverse halftoning methods, which are Multilayer Perceptron (MLP)-based and Radial Basis Function (RBF)-based inverse ...

Highly Pathogenic Avian Influenza A(H7N3) Virus in Poultry Workers, Mexico, 2012

We identified 2 poultry workers with conjunctivitis caused by highly pathogenic avian influenza A(H7N3) viruses in Jalisco, Mexico. Genomic and antigenic analyses of 1 isolate indicated relatedness to poultry and wild bird subtype H7N3 viruses from North America. This isolate had a multibasic cleavage site that might have been derived from recombination with host rRNA.

Assignment of the CD47 gene to pig chromosome band 13q42-->1/2q46 with somatic cell hybrids.

CD47 is a integrin-associated protein originally discovered as a plasma membrane molecule that co-purified with the integrin ·vß3 from leukocytes and placenta (Brown et al., 1990). CD47 is an unusual member of the immunoglobulin (Ig) superfamily of membrane proteins, with a single IgV-like domain at its N-terminus, a highly hydrophobic stretch with five membrane-spanning segments and an alterna...