The present work investigates mechanisms of permeability impairment as a result low-salinity fluid injection into brine-saturated porous media containing dispersible clays. We computational dynamics model at the pore-scale to simulate detachment, migration and straining fine particles in media. uses an immersed boundary method motion clay fines fluid. In addition hydrodynamic forces, we Derjagu...

The external electroluminescence (EL) quantum efficiency (QEEL) of a polymer light-emitting diode (PLED) can be affected by the following four factors: a) charge balance, b) the efficiency of producing singlet excitons, c) photoluminescence quantum efficiency (QEPL), and d) the output coupling effect. The QEPL can approach unity and the efficiency of producing singlet excitons can be high in lo...

Objectives: We report our experience with subureteral submucosal injection therapy for vesicoureteral reflux and determine the safety and efficacy in patients treated with dextranomer/ hyaluronic acid co-polymer. Background: Vesicoureteral reflux affects 1% of children and increases the chances of urinary tract infection, pyelonephritis, hypertension and chronic renal insufficiency. The aim of ...

Microcellular injection molding using supercritical fluid (SCF) as blowing agent attracts more and more interests. There are still many difficulties in microcellular injection molding, such as decreasing equipment cost, controlling cellular morphology, and increasing feasibility. In this work, primary microcellular injection molding experiments were carried out on newly-developed equipment, whi...

Injection of optimized chemistry water in enhanced oil recovery (EOR) has gained much interest in the past few years. Crude oil-water interfaces can have a viscoelastic character affected by the adsorption of amphiphilic molecules. The brine concentration as well as surfactants may strongly affect the fluid-fluid interfacial viscoelasticity. In this work we investigate interfacial viscoelastici...

The graded viscosity banks technology (tapering) for polymer flooding is studied several different models of mixing zones behavior. Depending on the function limiting injection profile rigorously derived transverse flow equilibrium model, Koval model and Todd-Longstaff model. potential gain in quantity compared to with a finite number slugs numerically estimated.

In order to determine the matching relationship of polymer molecular weight and reservoir permeability in ASP (alkaline/surfactant/polymer) flooding, a number of core flooding experiments with different polymer molecular weights are performed. Two types of curves for the relationship between the pressure difference and the injection pore volume multiples are obtained. One describes the characte...

Halophytes are remarkable plants that can tolerate extremely high-salinity conditions, and have different salinity tolerance mechanisms from those of glycophytic plants. In this work, we investigated the mechanisms of salinity tolerance of an extreme halophyte, Kochia sieversiana (Pall.) C. A. M, using RNA sequencing and physiological tests. The results showed that moderate salinity stimulated ...