Results 21 to 30 of about 126,370 (292)

Sandy Soils Stabilization Using Calcite Microbial Deposition [PDF]

open access: yesمدل‌سازی پیشرفته در مهندسی عمران
Today, the need to implement construction projects in the vicinity of rivers and sea coasts is inevitable. On the other hand, the soils of these areas generally have problems such as low bearing capacity or prone to liquefaction.
Anis Saffari   +3 more
doaj   +1 more source

Analytic approximation for eigenvalues of a class of $\mathcal{PT}$ symmetric Hamiltonians [PDF]

open access: yes, 2017
An analytical approximation for the eigenvalues of $\mathcal{PT}$ symmetric Hamiltonian $\mathsf{H} = -d^{2}/dx^{2} - (\mathrm{i}x)^{\epsilon+2}$, $\epsilon > -1$ is developed via simple basis sets of harmonic-oscillator wave functions with variable ...
Feranchuk, I. D., Skoromnik, O. D.
core   +2 more sources

Field and laboratory measurements of shear wave velocity in unsaturated soils [PDF]

open access: yesE3S Web of Conferences, 2023
Shear wave velocity measurements in soil are important for assigning site soil profiles to seismic site classes and for calculating other dynamic soil properties.
Abuawad Tareq   +2 more
doaj   +1 more source

New Clues on the Calcium Underabundance in Early-Type Galaxies [PDF]

open access: yes, 2003
We use our new stellar population models, which include effects from variable element abundance ratios, to model the Ca4227 absorption line indices of early-type galaxies (Trager et al.), and to derive calcium element abundances.
Bender, Ralf   +2 more
core   +4 more sources

An Approach for Description of Elastic Parameters of Cross-Anisotropic Saturated Soils [PDF]

open access: yesEurasian Journal of Science and Engineering, 2018
The processes of deposition and consolidation in natural soils or compaction in fill materials will typically produce soils that are initially cross-anisotropic (also known as transversely isotropic or orthotropic) in terms of both small strain elastic ...
Ahmed Mohammed Hasan
doaj   +1 more source

The epochs of early-type galaxy formation as a function of environment [PDF]

open access: yes, 2004
The aim of this paper is to set constraints of the epochs of early-type galaxy formation through the 'archaeology' of the stellar populations in local galaxies.
Aragon-Salamanca A.   +33 more
core   +1 more source

Correlation between shear wave velocity and effective confining pressure using cyclic triaxial testing apparatus [PDF]

open access: yesE3S Web of Conferences, 2019
The 2016 Kumamoto earthquakes struck Kumamoto and Ōita regions and caused several devastating liquefaction induced damages. The primary damage was due to the extreme ground shaking of the foreshock and main shock sequence.
Liu Guojun   +3 more
doaj   +1 more source

Stiffness moduli in triaxial tests on a loess-sand mixture [PDF]

open access: yesE3S Web of Conferences
Stiffness is one of the most important characteristics of geomaterials, and at the same time one of the most difficult to evaluate. It can be described by means of various stress-strain moduli, whose values strongly depend on the strain range and on the ...
Tankiewicz Matylda, Kowalska Magdalena
doaj   +1 more source

A return to observability near exceptional points in a schematic PT-symmetric model [PDF]

open access: yes, 2007
Many indefinite-metric (often called pseudo-Hermitian or PT-symmetric) quantum models H prove "physical" (i.e., Hermitian with respect to an innovated, ad hoc scalar product) inside a characteristic domain of parameters D.
Albeverio   +56 more
core   +2 more sources

Characteristics of elastic waves passing through a flowable fill at early age [PDF]

open access: yesE3S Web of Conferences, 2019
Elastic waves obtained from transducers are widely used to monitor the strength and integrity of cementitious materials. A pair of bender elements (BEs) and piezo disk elements (PDEs) embedded in a cuboid mould are applied to monitor elastic waves ...
Han WooJin, Byun Yong-Hoon, Lee Jong-Sub
doaj   +1 more source

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