Respiratory failure secondary to surfactant deficiency is a major cause of morbidity and mortality in low birth weight immature infants. Surfactant therapy substantially reduces mortality and respiratory morbidity for this population. The statement summarizes the indications for surfactant replacement therapy. Because respiratory insufficiency may be a component of multiorgan dysfunction in sic...

Abstract Capillary forces result in the trapping of oleic phase porous media even after extensive flushing with brine. Alkali‐surfactant‐polymer formulations drastically diminish capillary forces, whereas adding polymer to water increases viscous resulting highly efficient extraction residual oil. However, by virtue its scale, above process requires a large quantity chemicals, which poses threa...

We describe a procedure by which surfactant/albumin ratios in bronchoalveolar fluid (BALF) may be quantified with the Abbott Laboratories TDx fluorescence polarization analyzer and fetal lung maturity reagents. Adding albumin to BALF samples shifted the surfactant/albumin ratios to within the analytical range of the method. The analytical CV for assay of modified BALF samples was 2.9%. Ratios o...

We discuss a modified form of gravity implying that the action contains a power α of the scalar curvature. Coupling with the cosmic fluid is assumed. As equation of state for the fluid, we take the simplest version where the pressure is proportional to the density. Based upon a natural ansatz for the time variation of the scale factor, we show that the equations of motion are satisfied for gene...

This study was conducted to investigate organoclay prepared using montmorillonite clay with zinc oxide (ZnO) nanoparticles and a long-chain organic surfactant hexadecyltrimethylammonium bromide for the removal of nitrate ion from aqueous solutions. Adsorbents were evaluated by X-Ray Diffraction (XRD), Fourier Transform Infra-Red (FT-IR),...

The paper presents the effect of trapped gas during the application of secondary processes, or more precisely, in the period of application of conventional waterflooding of partially depleted oil reservoirs. These processes can be simulated by analogous tests on reservoir rock samples, on synthetic models under laboratory conditions or by numerical models. An explanation of physical mechanisms ...

In the framework of extended theory gravity, an accelerating cosmological model has been presented in this paper anisotropic space-time. The gravity is considered as [Formula: see text] with matter field viscous fluid. role coefficient discussed on cosmic expansion issue. developed formalism, a variable Hubble parameter incorporated to express dynamical respect redshift. observed be compatible ...

We study numerically the nonlinear stationary states of a droplet covered with an insoluble surfactant in uniaxial extensional flow. calculate both eigenfunctions to reveal instability mechanism and time-dependent resulting from it, which provides coherent picture phenomenon. The transition is saddle-node type, without surfactant. flow becomes unstable under linear perturbations. Surfactant con...

A simple model of viscous propulsion a two-dimensional Marangoni boat caused by surface diffusion and sublimation (reaction) insoluble surfactant is formulated studied analytically. The speed the determined explicitly as function Damkohler number fully resolving Marangoni-induced bulk flow release surfactants onto semi-infinite fluid. complementary general integral formula for also derived usin...