Microgeographic allozyme variation was examined in pinyon pine, Pinus edulis, among five collection sites in Owl Canyon, Colorado. Relatively dry and moist sites were identified by associated plant communities and the sizes and densities of trees. Three moist sites and two dry sites were compared, and because all sites were within 600 m of one another, isolation by distance was not considered a...

PURPOSE Conventional time-domain optical coherence tomography (OCT) has become an important tool for following dry or exudative age-related macular degeneration (AMD). Fourier-domain three-dimensional (3D) OCT was recently introduced. This study tested the reproducibility of 3D-OCT retinal thickness measurements in patients with dry and exudative AMD. METHODS Ten eyes with dry AMD and 12 eyes...

Antlion larvae that construct conical pits to capture prey may strongly affect foraging of ants and other arthropods, yet are usually abundant only in sheltered microhabitats. Larval antlion (Myrmeleon crudelisWalker) densities increased in exposed areas in central Texas in late summer and early autumnof 1998, presumably because of extended dry conditions. I conducted a study to quantify larval...

Sulfate-containing aerosol (SCA) dry deposition at the highway intersection, coastal location, and suburban area in Taiwan were analyzed and compared. Sampling was accomplished with a surrogate surface technique. Samples particles were coated with barium chloride (BaCl(2)) in a vacuum evaporator and then exposed to a relative humidity of 85% for 2 h to form distinctive products of SCAs. Treated...

Industrial fluorosis of goats in Baotou has a history of more than 20 years. Since the 1980$ the following alleviating measures have been adopted: 1) chemical feed supplementation to counteract and reduce digestion of fluoride; 2) removal of goats from high to low fluoride areas; 3) relocation of goats from low to high fluoride areas for reproduction; 4) grass cultivation and/or low fluoride gr...

– The Toco Toucan (Ramphastos toco) is a large canopy frugivore common in the seasonal areas of the interior of Brazil. In this study, I evaluated fruit production and analyzed the toucan’s feeding habits in two types of dry forests, one deciduous, although rich in figs, and another semi-deciduous, both in the western Brazil. Both areas exhibited marked fruiting patterns, which peaks overlapped...

INTRODUCTION The purpose of the present study is to analyse the prevalence and distribution of asbestos lung residue in the Barcelona urban population. MATERIAL AND METHODS Lung autopsy samples were obtained from 35 individuals who had lived in Barcelona. The close family were interviewed in order to rule out asbestos exposure. Samples were obtained from three areas of the right lung during t...