The relationships between 6 measures of substratum topography or vertical relief and a tropical fish assemblage were evaluated and the merits of the various measures were assessed. A method of quantifying surface topography in the field using a profile gauge is introduced and found to be rapid and to generate concise summary statistics. Of the 6 measures of substratum topography compared, 1 was...

Ponticulin is a 17-kD glycoprotein that represents a major high affinity link between the plasma membrane and the cortical actin network of Dictyostelium. To assess the role of ponticulin in pseudopod extension and retraction, the motile behavior of two independently generated mutants lacking ponticulin was analyzed using computer-assisted two- and three-dimensional motion analysis systems. Mor...

We observed the dynamics of actin foci in live Dictyostelium cells expressing GFP-actin. Actin foci were dynamic structures, but they were fixed on the substratum during cell migration. Interference reflection microscopy revealed that the ventral cell membrane was closer to the substratum at sites of actin foci. Furthermore, some actin foci were incorporated into the retraction fibers, ripped o...

this study sought to determine the level of adherence to coartem© in the routine treatment of uncomplicated malaria among children under the age of five years in nyando district, kenya.seventy-three children below the age of five years with microscopically confirmed uncomplicated plasmodium falciparum malaria and prescribed coartem(®) during the normal outpatient department hours were included ...

Locke has a theory about the idea of substance considered as a ‘substratum’ or ‘support’ of qualities.1 It is a strange theory, according to which one part of our conceptual apparatus is both important and disreputable. Nothing else in the writings of any philosopher matches the doubleness of attitude of the passages about substratum in Locke’s Essay. This duplicity has been noted by students o...