A rock physics model was established to calculate the P-wave velocity dispersion and attenuation caused by squirt flow of fluids in gas hydrate-bearing sediments. The critical hydrate saturation parameter introduced describe different ways concentration, including mode pore filling co-existence particle cementation. Rock physical modeling results indicate that is insensitive increase for fillin...

In this contribution we present a method for constraining the learning of a Multi-Layer Perceptron network with background knowledge. The algorithms presented here can be used to train the partial derivatives of the network to match given numerical values or to minimize a given cost function. Thus the mapping produced by the network can be constrained according to known input-output models, mon...

The fractal degree of adsorption on the multi-walled carbon nanotube has been investigated. The fractal-like Langmuir kinetics model has been used to obtain the fractal degree of ion adsorption on multi-walled carbon nanotube. The behavior of the fractal-like kinetics equation was compared with some famous rate equations like Langmuir, pseudo-first-order and pseudo-second-order equations. It is...

Modeling of video traffic has always been an important research area for the design, simulation, and performance analysis of packet video networks and Internet streaming. In this paper, we present a frame-level hybrid framework for modeling multi-layer VBR video traffic, in which the base layer is modeled using a combination of wavelet and time-domain methods and the enhancement layer is linear...

Advanced techniques have greatly promoted the exploitation of shale gas from shale matrix with low permeability. But the gas transport mechanism in shale is still unclear. Due to the multi-scale pore systems in a shale reservoir, viscous flow, slip flow, Knudsen diffusion and adsorption/desorption should be applied to the flowing equation so that it can properly predict gas flow dynamics. Multi...

High-resolution photoelectron spectroscopy using synchrotron radiation was applied for monitoring in real time the oxidation kinetics on the Ti(0001) surface at 405C with dry O2 gas. The time evolution of O 1s photoelectron intensity showed a linear uptake curve up to ~90 L followed by a sudden saturation up to ~160 L and then a restart of the linear increase, indicating that O2 adsorption obey...

Many important industrial separation processes based on adsorption operate close to saturation. In this regime, the underlying adsorption processes are mostly driven by entropic forces. At equilibrium, the entropy of adsorption is closely related to the enthalpy of adsorption. Thus, studying the behavior of the enthalpy of adsorption as a function of loading is fundamental to understanding sepa...

Rock physics modeling aims to provide a link between rock properties, such as porosity, lithology, and fluid saturation, and elastic attributes, such as velocities or impedances. These models are then used in quantitative seismic interpretation and reservoir characterization. However, most of the geophysical measurements are uncertain; therefore, rock physics equations must be combined with mat...

Many experimental studies of protein deposition on solid surfaces involve alternating adsorption/desorption steps. In this paper, we investigate the effect of a desorption step (separating two adsorption steps) on the kinetics, the adsorbed-layer structure, and the saturation density. Our theoretical approach involves a density expansion of the pair distribution function and an application of a...