Jeroen Baert

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Voxel-based rendering has recently received significant attention due to its potential in the context of efficiently rendering massively large and highly detailed scenes. Unfortunately, few or no scenes are available in the form of sparse voxel octrees. In this paper, we present an out-of-core algorithm for constructing a sparse voxel octree from a triangle(More)
Observers were given brief presentations of pairs of simultaneous stimuli consisting of a visual and a spoken letter. In the visual focused-attention conditon, only the visual letter should be reported; in the auditory focused-attention condition, only the spoken letter should be reported; in the divided-attention condition, both letters, as well as their(More)
Globule leukocytes, dispersed throughout the respiratory epithelium as single cells, were isolated from rat trachea and were enriched by centrifugation on a discontinuous Percoll gradient. The isolation and enrichment procedure yields a cell fraction containing 75% globule leukocytes. The cell viability, as assessed by trypan blue exclusion, was at least(More)
Several and various types of cells contain fine cytoplasmic filaments closely resembling the myofilaments of muscle cells (2, 18, 23, 24). In many of these cells and especially when cultured, it has been demonstrated that some of these filaments react with heavy meromyosin (HMM) in the same way as do the actin filaments of muscle cells (3, 6 7). This(More)
In the present study, the presence of immunoglobulins was immunohistochemically investigated in globule leucocytes in the tracheal respiratory epithelium of conventional rats, athymic nude rats and a germ-free rat. It was not possible to demonstrate any immunoglobulins in tracheal globule leucocytes. This and other dissimilarities with intestinal globule(More)
The ultrastructure of globule leukocytes is described in the nasal and tracheal respiratory epithelium of three boys suffering from chronic airway infections. The globule leukocytes lie free in the intercellular spaces and appear to be migratory cells. They are characterized by intracytoplasmic membrane-bound globules, variable in number, size, shape, and(More)
The enzyme naphthol-AS-D-chloroacetate esterase is histochemically demonstrated in the granules of globule leucocytes in the tracheal epithelium of rats. The enzyme reactivity may be used as a cytochemical marker of these cells. The previously postulated mast cell origin of globule leucocytes is doubted, and the possibility that globule leucocytes belong to(More)
The ultrastructure and distribution of glycocalyceal bodies are described in the nasal and tracheal respiratory epithelium of children suffering from chronic airway infections. From the presented data it is assumed that glycocalyceal bodies do occur in chronic infected airways and are related only with the goblet cells; they seem not to be formed by budding(More)
  • Jeroen Baert
  • Journal of submicroscopic cytology and pathology
  • 1989
The ultrastructure of globule leucocytes isolated from rat tracheal epithelium is described. The isolated globule leucocytes appear as rounded mononuclear cells with a diameter of 6 to 8 microns. The often indented nucleus is usually eccentrically located in the cell. The characteristic intracytoplasmic membrane-bound granules vary greatly in(More)
In this code sample I will demonstrate my implementation of Object Space algorithms for drawing contour lines and suggestive contour lines on existing 3d meshes, developed for my Master’s thesis in the Graphics group at the Department of Computer Science of the Catholic University of Leuven, Belgium. The Object Space algorithms implemented here are not the(More)