It is necessary to identify speckled regions in ultrasound images to control adaptive speckle suppression algorithms, for tissue characterisation, and to estimate the elevational separation of B-scans by speckle decorrelation. Previous authors have proposed classification techniques based on second order powers of the homodyned k-distribution, or lower order powers of the more limited k-distrib...

Fluorescent speckle microscopy (FSM), a combination of conventional wide-field fluorescent light microscopy and digital imaging with a low-noise, charge-coupled device (CCD) camera, has been developed to allow visualization of assembly/disassembly dynamics, movement, and turnover of macromolecule assemblies in vivo and in vitro. FSM uses a low level of fluorescent subunits to avoid high backgro...

Speckled images of a binary broad band light source (600-670 nm), generated by randomized reflections or transmissions, were used to reconstruct a binary image by use of multi-frame blind deconvolution algorithms. Craft store glitter was used as reflective elements. Another experiment used perforated foil. Also reported here are numerical models that afforded controlled tip-tilt and piston aber...

In this study, hyperspectral imaging (HSI) and chemometrics were implemented to develop prediction models for moisture, colour, chemical structural attributes of purple-speckled cocoyam slices subjected hot-air drying. Since HSI systems are costly computationally demanding, the selection a narrow band wavelengths can enable utilisation simpler multispectral systems. 19 optimal in spectral range...

OBJECTIVE To establish the frequency of connective tissue diseases (CTD) in a cohort of Italian patients with primary biliary cirrhosis (PBC) and to evaluate the availability of a marker for the early identification of the more common associated CTD. METHODS One hundred and seventy consecutive patients with histologically diagnosed PBC were screened for the presence of a CTD and/or Raynaud's ...

We have recently shown that discrete foci are present in the nuclei of mammalian cells in which each of the U1, U2, U4/U6, and U5 snRNPs involved in pre-mRNA splicing, and the non-snRNP-splicing factor U2AF, are concentrated (Carmo-Fonseca, M., D. Tollervey, R. Pepperkok, S. Barabino, A. Merdes, C. Brunner, P. D. Zamore, M. R. Green, E. Hurt, and A. I. Lamond. 1991. EMBO (Eur. Mol. Biol. Organ....

BACKGROUND/AIM Nestin is an intermediate filament marker for neural progenitor cells. The authors aimed to identify nestin positive cells in adult human retina and within surgically removed epiretinal membranes. METHODS Adult human retina and epiretinal membranes were studied. Tissue was fixed and processed for semithin sections or whole mount preparations for immunohistochemical detection of...