Results 31 to 40 of about 145,675 (315)

Numerical Simulation Study on Lateral Displacement of Pile Foundation and Construction Process under Stacking Loads

open access: yesComplexity, 2018
Lateral displacement of pile foundation is crucial to the safety of an overall structure. In this study, a numerical simulation on the lateral displacement of pile foundation under stacking loads was conducted to determine its relation with different ...
Yan-yan Cai   +4 more
doaj   +1 more source

Preparation of large sand samples using the air pluviation method – investigation of factors influencing homogeneity [PDF]

open access: yesEPJ Web of Conferences
Air pluviation is a well-established technique for preparing sand specimens specifically for element and model-scale testing. In this method, dry sand is discharged from a hopper onto a perforated plate, which controls the bulk flow.
Niebler Michael   +4 more
doaj   +1 more source

A Method for Large Underground Structures Geometry Evaluation Based on Multivariate Parameterization and Multidimensional Analysis of Point Cloud Data

open access: yesEnergies, 2022
In underground mining, new workings (tunnels) are constructed by blasting or mechanical excavation. The blasting technique used in underground mines is supported by economic aspects, especially for deposits characterized by hard rocks. Unfortunately, the
Adam Wróblewski   +3 more
doaj   +1 more source

Investigation on jointed rock tunnel stability numerical database construction based on combined FDM–DEM approach

open access: yesUnderground Space
Reliable data sources are essential for intelligent tunnel construction, yet on-site data are often insufficient to meet sample requirements. Previous numerical modeling studies have seldom considered the combined effects of different excavation methods’
Rongmin Bai   +6 more
doaj   +1 more source

Hydrogen Delocalization in an Asymmetric Biomolecule: The Curious Case of Alpha-Fenchol

open access: yesMolecules, 2021
Rotational microwave jet spectroscopy studies of the monoterpenol α-fenchol have so far failed to identify its second most stable torsional conformer, despite computational predictions that it is only very slightly higher in energy than the global ...
Robert Medel   +3 more
doaj   +1 more source

Investigations of Nanoscale Variations in Spin and Charge Transport in Manganites and Organic Semiconductors Using Spin Polarized Scanning Tunneling Spectroscopy [PDF]

open access: yes, 2010
Spintronics is a new class of spin-dependent electronics with great potential for nonvolatile memory and logic technology. Additionally, spintronics may be combined with optoelectronic applications to achieve higher efficiency and novel capabilities. All
Hughes, Cameron Richard
core   +1 more source

Transacciones entre partes relacionadas: Aprobación por la mayoría de la minoría de los socios desinteresados

open access: yesUSFQ Law Review, 2022
Las transacciones entre partes relacionadas son un tipo de autocontrataciones utilizadas por los accionistas mayoritarios en desmedro de los minoritarios. Ecuador es el primer país latinoamericano en regular estas transacciones, sirviendo como referencia
Juan Navas Naranjo
doaj   +1 more source

The Third Quantization: To Tunnel or Not to Tunnel? [PDF]

open access: yesGalaxies, 2018
Within the framework of the third quantization, we consider the possibility that an initially recollapsing baby universe can enter a stage of near de Sitter inflation by tunnelling through a Euclidean wormhole that connects the recollapsing and inflationary geometries. We present the solutions for the evolution of the scale factor in the Lorentzian and
Mariam Bouhmadi-López   +3 more
openaire   +4 more sources

Theoretical and Experimental Evidence of Two‐Step Tautomerization in Hypericin

open access: yesAdvanced Photonics Research, 2021
Hypericin has large potential in modern medicine and exhibits fascinating structural dynamics, such as multiple conformations and tautomerization. However, it is difficult to study individual conformers/tautomers, as they cannot be isolated due to the ...
Quan Liu   +7 more
doaj   +1 more source

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

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