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.

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...

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...

Reliable estimates of river stream fl ow and fl ood zoning maps are needed for water resourcesmanagement such as fl ood mitigation, water supply, dam construction and irrigation. Flood zoning needsaccurate data and is one of the non-structural fl ood management methods. This paper describes theapplication of HEC-RAS and GIS model to determine fl oodplains maps for the part of Sardabrud Rivertha...

The characterization of two-phase flow has been commonly based on homogeneous wet capillary models, which are limited to heterogeneous porous media. In this work, pressure and relative permeability models for three systems derived, enable the analysis effect oil-wet ratio mechanism. pressures, permeabilities water cut curves simulated at primary drainage stage. results show that water-wet exhib...