Results 61 to 70 of about 106,445 (292)

Finite-Element Time Evolution Operator for the Anharmonic Oscillator [PDF]

open access: yes, 1994
The finite-element approach to lattice field theory is both highly accurate (relative errors $\sim1/N^2$, where $N$ is the number of lattice points) and exactly unitary (in the sense that canonical commutation relations are exactly preserved at the ...
Milton, Kimball A.
core   +2 more sources

Integrated Spectroscopy of Bulge Globular Clusters and Fields. II. Implications for stellar population models and elliptical galaxies [PDF]

open access: yes, 2002
Synthetic Lick indices (e.g. Mg_2, Fe, etc.) of Simple Stellar Population (SSP) models are calibrated for the first time up to solar metallicity with a sample of Milky Way globular clusters (GCs) which includes the metal rich GCs of the Galactic bulge ...
A. Renzini   +96 more
core   +5 more sources

Estimating shear wave velocity with the SCPTu and Bender element

open access: yesIOP Conference Series: Earth and Environmental Science, 2021
Abstract The shear wave velocity (vs) is an important soil and rock property that can both be used in several geotechnical problems including for evaluation of dynamic properties of soils as well as in determining the maximum value of soil stiffness at small strain.
S M Valsson   +3 more
openaire   +1 more source

On the Lightweight Potential of Laser Additive Manufactured NiTi Triply Periodic Minimal Sheet Lattices

open access: yesAdvanced Engineering Materials, EarlyView.
This study explores the lightweight potential of laser additive‐manufactured NiTi triply periodic minimal surface sheet lattices. It systematically investigates the effects of relative density and unit cell size on surface quality, deformation recovery, compression behavior, and energy absorption.
Haoming Mo   +3 more
wiley   +1 more source

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 stellar populations of the central region of M31

open access: yes, 2018
We continue the analysis of the dataset of our spectroscopic observation campaign of M31, by deriving simple stellar population properties (age metallicity and alpha-elements overabundance) from the measurement of Lick/IDS absorption line indices.
Bender, R.   +5 more
core   +1 more source

Zein‐Based Adhesives: Sustainable Extraction and Application in Bioadhesive Technologies

open access: yesAdvanced Engineering Materials, EarlyView.
Zein is extracted from corn gluten meal using a simple and scalable process with high yield (~90%). The resulting protein is applied in bioadhesives modified with Ca2+ and Fe3+ ions, exhibiting substrate‐dependent adhesion. The findings demonstrate competitive bonding performance and highlight the role of ionic interactions in tuning adhesion ...
Paula Bertolino Sanvezzo   +3 more
wiley   +1 more source

Influence of time on the small strain shear modulus of an allophanic volcanic ash [PDF]

open access: yesE3S Web of Conferences
The small strain shear modulus is an important parameter in the assessment of soil dynamics problems. Studies on the small strain shear stiffness of volcanic ash remain rare probably because globally they cover just under 1% of the land surface. However,
Gobin Mukteshwar   +4 more
doaj   +1 more source

Stellar kinematics and populations out to 1.5 effective radius in the elliptical galaxy NGC4636

open access: yes, 2011
We present high quality long slit spectra along the major and minor axes out to 1.5 effective radius ($R_e$) of the massive galaxy NGC4636 taken by Hobby-Eberly Telescope (HET).
Bell   +41 more
core   +1 more source

Precise atmospheric oxygen measurements with a paramagnetic oxygen analyzer [PDF]

open access: yes, 2002
A methodology has been developed for making continuous, high-precision measurements of atmospheric oxygen concentrations by modifying a commercially available paramagnetic oxygen analyzer. Incorporating several design improvements, an effective precision
Keeling, Ralph F.   +2 more
core   +1 more source

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