the chemical surfactant flooding can mobilize the trapped oil by lowering the interfacial tension between oil and brine and in some cases altering the reservoir rock wettability. in this work, the effect of surfactants on oil/brine interfacial tension was experimentally investigated. first, the effect of surfactants concentration was surveyed. afterwards, the effect of salinity on surfactant be...

a model capable of predicting the minimum content of aflatoxin m1 (afm1) in iranian while brine cheese has been developed using a chemometric approach to determine the optimum processing conditions. renneting temperature, cut size, stirring time, press time, curd size and saturated brine ph were all regarded as process variables. three-dimensional response surface and contour plots were drawn. ...

Abstract A new type of polyhalite potassium ore (NTPPO) was found in the Lower Triassic Jialingjiang Formation, NE Sichuan Basin, SW China. It is water soluble, therefore can be exploited using water-solution method, and great potential economic value research significance. Based on cores, thin sections, energy spectrum SEM analyses, its microfeatures, macrofeatures origin are discussed, a gene...

Due to high efficiency and low cost, hydrate-based desalination is investigated as a pretreatment method for seawater desalination. To improve the formation rate of hydrates, effect sodium dodecyl sulfate (SDS) on CO2 hydrate from 3.5 wt.% NaCl solution was measured at 275 K 3 MPa. X-ray diffraction (XRD) cryo-scanning electron microscopy (cryo-SEM) were used measure crystal structure micromorp...

The investigation was conducted with methanolic fruit extract of Averrhoa carambola for its antibacterial and cytotoxic activities. Antibacterial activity of the extract was evaluated against various Gram-positive and Gram-negative bacteria using disk diffusion technique. For cytotoxic activity, brine shrimp lethality bioassay was performed to estimate LC50 values. In our preliminary screening,...

Objective: To investigate the antifungal, haemolytic and cytotoxic activity of methanol and methanol: chloroform extracts of the marine Mollusks (10 Gastropods, 5 Bivalves, 2 Cephalopods) and 1 Echinoderm. Methods: Crude methanol and methanol: chloroform extracts of the marine Mollusks (10 Gastropods, 5 Bivalves, 2 Cephalopods) and 1 Echinoderm were tested for antifungal activity using disc dif...

Porosity and permeability are two fundamental reservoir parameters. We study how important large variations in their values for residual oil saturation estimates from Single Well Chemical Tracer tests. Although porosity do not enter the classical chromatography formulae, or thereof, that does necessarily imply they irrelevant all real scenarios. This is because govern fluids distributed within ...