Results 31 to 40 of about 1,827,516 (200)

A simplified numerical and analytical study for assessing the seismic response of a gravity concrete lock

open access: yesRevista IBRACON de Estruturas e Materiais, 2020
: This work presents the dynamic response of a lock subjected to the horizontal S0E component of the El Centro earthquake for empty and completely filled water chamber cases, by coupled fluid-structure analysis.
Neander Berto Mendes   +2 more
doaj   +1 more source

Study of the Critical Pore Radius That Results in Critical Gas Saturation during Methane Hydrate Dissociation at the Single-Pore Scale: Analytical Solutions for Small Pores and Potential Implications to Methane Production from Geological Media

open access: yesEnergies, 2021
We examine the critical pore radius that results in critical gas saturation during pure methane hydrate dissociation within geologic porous media. Critical gas saturation is defined as the fraction of gas volume inside a pore system when the methane gas ...
Ioannis Nikolaos Tsimpanogiannis   +2 more
doaj   +1 more source

Analytic Solution of Multipantograph Equation [PDF]

open access: yesJournal of Applied Mathematics and Decision Sciences, 2008
We apply the homotopy analysis method (HAM) for solving the multipantograph equation. The analytical results have been obtained in terms of convergent series with easily computable components. Several examples are given to illustrate the efficiency and implementation of the homotopy analysis method.
Fadi Awawdeh   +2 more
openaire   +2 more sources

Using the stress function in the flow of generalized Newtonian fluids through pipes and slits

open access: yes, 2015
We use a generic and general numerical method to obtain solutions for the flow of generalized Newtonian fluids through circular pipes and plane slits. The method, which is simple and robust can produce highly accurate solutions which virtually match any ...
Sochi, Taha
core   +2 more sources

Constraining Monopoles by Topology: an Autonomous System [PDF]

open access: yes, 2014
We find both analytical and numerical solutions of SU(2) Yang-Mills with an adjoint Higgs field within both closed and open tubes whose sections are spherical caps. This geometry admits a smooth limit in which the space-like metric is flat and, moreover,
Canfora, Fabrizio, Tallarita, Gianni
core   +2 more sources

Exploring New Horizons for Wine Grapes: Modulating Functional Effects by Varying Harvest Timing and Solar Exposure

open access: yesFoods
Grenache (GN) and Cabernet Sauvignon (CS) are two traditional red grape varieties widely cultivated in the Mediterranean area and both late-ripening cultivars, which makes them less sensitive to global warming conditions and more stable to harvest timing.
Daniel Rico   +7 more
doaj   +1 more source

Analytical Solution of Multicompartment Solute Kinetics for Hemodialysis [PDF]

open access: yesComputational and Mathematical Methods in Medicine, 2013
Objective.To provide an exact solution for variable-volume multicompartment kinetic models with linear volume change, and to apply this solution to a 4-compartment diffusion-adjusted regional blood flow model for both urea and creatinine kinetics in hemodialysis.Methods.A matrix-based approach applicable to linear models encompassing any number of ...
Przemysław Korohoda, Daniel Schneditz
openaire   +2 more sources

Analytically solvable driven time-dependent two-level quantum systems

open access: yes, 2012
Analytical solutions to the time-dependent Schrodinger equation describing a driven two-level system are invaluable to many areas of physics, but they are also extremely rare.
Edwin Barnes   +3 more
core   +1 more source

Characterization and Some Insights into the Reaction Chemistry of Polymethylsilsesquioxane or Methyl Silicone Resins

open access: yesInternational Journal of Polymer Science, 2012
Structural characterization of a polymethylsilsesquioxane (PMSQ) and a DT-type methyl silicone resin (MeDT) has been carried out by various instrumental analyses including GPC, NMR, gas chromatography, and gas chromatography-mass spectrometry.
Maki Itoh   +4 more
doaj   +1 more source

BEHAVIOUR OF SALT DISTRIBUTION IN DRY SOILS

open access: yesJournal of Agricultural Engineering, 2007
The behaviour of soil salinity in dry conditions is investigated by means of analytical tools. We present a closed solution for advective transport, and apply it to two typical real-world scenarios: i) a finite depthdistributed (i.e. Heaviside-type), and
Angelo Sommella   +3 more
doaj   +1 more source

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