A. Fregoso

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A limitation of first-pass radionuclide angiocardiography is the limited repeatability because of the relatively long half-life of technetium-99m (Tc-99m). The feasibility, reproducibility and validity of multiple sequential quantitative first-pass studies were assessed in humans using the short-lived isotope gold-195m (Au-195m) (half-life of 30.6 seconds,(More)
R.I.A. dosages of specific IgE antibodies to Dermatophagoides pteronyssinus, Dermatophagoides farinae (house dust mites), Acarus siro, Lepidoglyphus destructor, and Tyrophagus putrescentiae (storage mites) in 467 unselected patients were statistically analyzed. A significant noncorrelation between specific IgE antibodies to storage mites and those to house(More)
The focus of this paper is on the design, implementation, and validation of asynchronous multimedia annotations designed for Web-based collaboration in educational and research settings. The two key questions we explore in this paper are: How useful are such annotations and what purpose do annotations serve? What is the ease of use of our specific(More)
RIA dosages of specific IgE antibodies to cow milk, alpha-lactalbumin, beta-lactoglobulin, casein, cheddar and mould cheese were determined in 440 patients. Statistic analysis has been carried out with: 1) the linear regression and correlation coefficient r2: 2) U test of Mann-Whitney and then S test of Kendall Results show that casein has low allergenicity(More)
We examined habitat associations of the endemic long-tailed wood-partridge (Dendrortyx macroura) at the macrohabitat and microhabitat levels in a Mexican temperate forest managed for timber production. To determine what vegetation associations were used more frequently than expected, we used a map depicting the spatial distribution of eight associations and(More)
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