simultaneous capillary dominated displacement of the wetting and non-wetting phases are processes of interest in many disciplines including modeling of the penetration of polluting liquids in hydrology or the secondary migration in petroleum reservoir engineering. percolation models and in particular invasion percolation is well suited to characterize the slow immiscible displacement of two flu...

abstract rice can be cultivated in various soils but soil with heavy texture and low permeability is more appropriate for its growth than other types of soil texture. it’s assumed that existence of zeolite in soil can be effective for moisture retention and avoiding of occurrence of crack in soil. in order to investigation of the effect of zeolite on moisture status and hydraulic properties of ...

Abstract Steam-water capillary pressure is often either ignored or determined artificially in geothermal reservoir engineering. However steam-water capillary pressure plays an important role in geothermal reservoir performance and may not be substituted by air-water capillary pressure. To this end, preliminary mathematical models have been developed to calculate drainage and imbibition steam-wa...

Capillary chromatography for the separation of optical isomers was developed using an untreated poly(tetrafluoroethylene) capillary tube and a water-hydrophilic/hydrophobic organic solvent mixture as a carrier solution. The open tubular capillary was 110 cm in length (90 cm effective length) and 100 microm in inner diameter. The carrier solution was prepared with a water-acetonitrile-ethyl acet...

We present here the capillary cohesion resulting from a liquid bridge between two particles. The bridge between two particles of different sizes takes a complex shape as illustrated in figure 1. R1 and R2 are the particle radii, ζ1 and ζ2 are the filling angles (corresponding to the wetted surface of the particles), θ is the wetting angle, and δn is the distance between particles. The axis x co...

results in the first series, cellularity and blood levels were significantly lower in capillary-fnb compared with cfnb (p < 0.001 and p = 0.011, respectively). there was no significant difference between cfnb and vacfnb in cellularity and blood (p = 0.15 and p = 0.1, respectively). in the second series, cellularity was significantly higher in cfnb compared with vacfnb (p < 0.001) with no signif...

the essential oil of the root of heracleum persicum (apiaceae) was analyzed by capillary gc and gc /ms. the major constituents were identified as viridiflorol (23.05 %), elemol (3.63 %), b-maliene (3.07 %), spathulenol (3.34 %) and 2-tetradecanol (3.38 %).