The dynamics of Lagrangian particles and tracers in the vicinity of a baroclinically unstable zonal jet are investigated in a simple 2-layer model with an initially quiescent lower layer. Presence of a wave induces a particle drift which is dominated by a Stokes drift rather then the mean Eulerian velocity due to the wave. Stable and unstable waves both have zonal Stokes drift with a similar me...

The nonlinear one-dimensional equations of blood ow in Voigttype visco-elastic vessels are numerically solved using both a TaylorGalerkin and a discontinuous Galerkin scheme to study the e ects on aortic and cerebral pulse waveforms of wall visco-elasticity, uid viscosity, wall compliances and resistances, ow inertia, cardiac ejection, and out ow pressure. A linear analysis of these equations s...

By means of He's homotopy perturbation method (HPM) an approximate solution of velocity eld is derived for the ow in straight pipes of non-Newtonian uid obeying the Sisko model. The nonlinear equations governing the ow in pipe are for- mulated and analyzed, using homotopy perturbation method due to He. Furthermore, the obtained solutions for velocity eld is graphically sketched...

In the title hydrated mol-ecular salt, 2C5H8N3O(+)·SO4 (2-)·H2O, the components are linked by N-H⋯Os and Ow-H⋯Os (s = sulphate, w = water) hydrogen bonds, generating a layer by a+b+c and 2a-b translations. The cations are arranged nearly in parallel and show displaced π-π stacking centroid-centroid distance = 4.661 (2) Å between adjacent layers.

Diiusion approximation is a method which consists in replacing a discrete valued process with an appropriate continuous one. Using this method, we study some problems related to the ow synchronization in ATM networks. We model the end-to-end transmission delay and introduce a synchronization station at the receiver level to compensate the dispersion eeect that can be drawn by the jitter phenome...

Objectives: To associate the maternal perception of child’s weight (MPCW) and nutritional status. describe lifestyle behavior problems (CLBPs) self-efficacy (SE) to deal with them, as well verify differences according children without overweight-obesity (OW-OB) MPCW. Material methods: There was participation 274 dyads (mother-preschool child). MPCW assessed through words images. The mothers ans...

ADV # 20 AN 05 E CES IN ECOLOGICAL RESEARCH VOL. 37 0065-250 lsevier Ltd. All rights reserved DOI: 10.1016/S0065-2504( 4/0 04) II. I ntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222 III. P redator and Prey in the Chemostat—A Simple Story? . . . . . . . . . . . . 224 IV. T esting Hypotheses of Mechanism . . . . . . . . . . . . . . . . . . ...

In recent years, sewage sludge (SS) and bio-waste management have attracted increasing environmental attention. this study, hydrothermal carbonization (HTC) technology is investigated in the framework of a co-treatment digestate (SSD) an organic fraction municipal solid waste (OW). The proposed configuration integrates HTC with anaerobic digestion (AD) inter-stage (AD1 + AD2). effects different...

One major cause of elastic wave attenuation in heterogeneous porous media is wave-induced flow of the pore fluid between heterogeneities of various scales. It is believed that for frequencies below 1 kHz, the most important cause is the wave-induced flow between mesoscopic inhomogeneities, which are large compared with the typical individual pore size but small compared to the wavelength. Vario...

The main drawback in the utilization of geothermal resources arises from precipitation secondary minerals within wells, pipelines, steam separators, turbines and other surface equipment form scales. Scale formation is an outcome alteration various rocks dissolved fluids that find their way into a reservoir. Once ascend to surface, hydrostatic pressure decreases toward phase separation level per...