this study was conducted to characterize the reactivity of carbonates in the surface horizons of 20 soils (entisols and aridisols) from central region of iran. the samples were analyzed for calcium carbonate equivalent (cce), active calcium carbonate equivalent (acce), non-active calcium carbonate equivalent (n.acce), carbonate mineralogy and surface area of carbonates (ssa) through n2 adsorpti...

The chief obstacles to the study of the parasitic or in vivo form (spherule) of Coccidioides immitis grown in synthetic media have been: (1) separating spherules from hyphae, (2) obtaining rupture of the majority of the spherules, and (3) failure of the endospores to separate from the spherule matrix. Growth of spherules in a chemically defined liquid medium composed of glucose, ammo(liberated ...

We have developed a multi-phase SPH method to simulate arbitrary interfaces containing surface active agents (surfactants) that locally change the properties of the interface, such the surface tension coefficient [1]. Our method incorporates the effects of surface diffusion, transport of surfactant from/to the bulk phase to/from the interface and diffusion in the bulk phase. Neglecting transpor...