Results 31 to 40 of about 313,264 (302)

A comparative evaluation of gingival microleakage and internal voids in Class II composite restoration with two different lining techniques: An in vitro study

open access: yesJournal of Indian Society of Pedodontics and Preventive Dentistry, 2022
Aim: The aim of this study was to evaluate the gingival microleakage and internal voids in Class II composite restoration restored with precure and co-cure lining techniques using stereomicroscopic method.
Rachana Shishodia   +4 more
doaj   +1 more source

Distribution and Evolution Law of Void Fraction in the Goaf of Longwall Mining in a Coal Mine: Calculation Method and Numerical Simulation Verification

open access: yesApplied Sciences, 2023
Many voids are produced in the mining process of ore-bearing strata. To explore the development law of voids after mining coal-bearing strata, a theoretical model was established to derive the overall distribution and shape of voids in the goaf.
Jiaqi Wang   +4 more
doaj   +1 more source

Analysis of Failure Mode of Reinforced Embankments Overlying Voids Based on Discrete Method

open access: yesApplied Sciences, 2023
The mode of the reinforced embankment overlying voids was generated based on discrete element software. By changing the vertical distance H and the horizontal distance L, the influence of the void position on the bearing capacity characteristics ...
Qi Zhang, Yongliang Lin
doaj   +1 more source

Clustering and Bias Measurements of SDSS Voids [PDF]

open access: yes, 2015
Using a void catalog from the SDSS survey, we present the first measurements of void clustering and the corresponding void bias. Over the range 30-200 Mpc/h the void auto-correlation is detected at 5-sigma significance for voids of radius 15-20 Mpc/h. We also measure the void-galaxy cross-correlation at higher signal-to-noise and compare the inferred ...
arxiv   +1 more source

Effects of a magnetic field and initial stress on reflection of SV-waves at a free surface with voids under gravity

open access: yesJournal of the Mechanical Behavior of Materials, 2018
The present study deals with the reflection of SV-waves at a free surface in the presence of magnetic field, initial stress, voids and gravity. When an SV-wave incident on the free surface of an elastic half space, two damped P-waves and an SV-wave are ...
Anya Augustine Igwebuike   +5 more
doaj   +1 more source

Outcomes of Class II composite restorations placed by dental students: An observational study

open access: yesSaudi Journal of Oral Sciences, 2020
Introduction: Main objectives of restoring the teeth is to remove the caries and replace the tooth structure to restore form and function. This radiographic study aimed to determine the defective Class II composite restorations in permanent teeth placed ...
Ghada L AlOtaibi   +3 more
doaj   +1 more source

Morphological Statistics of the Cosmic Web [PDF]

open access: yes, 2004
We report the {\em first} systematic study of the supercluster-void network in the $\Lambda$CDM concordance cosmology treating voids and superclusters on an equal footing.
Shandarin, Sergei F.
core   +3 more sources

On the magnetic fields in voids [PDF]

open access: yes, 2012
We study the possible magnetization of cosmic voids by void galaxies. Recently, observations revealed isolated starforming galaxies within the voids. Furthermore, a major fraction of a voids volume is expected to be filled with magnetic fields of a minimum strength of about $10^{-15}$ G on Mpc scales.
arxiv   +1 more source

Voids in the SDSS Galaxy Survey [PDF]

open access: yesAstron.Lett.33:499-511,2007, 2007
Using the method of searching for arbitrary shaped voids in the distribution of volume-limited samples of galaxies from the DR5 SDSS survey, we have identified voids and investigated their characteristics and the change in these characteristics with decreasing Mlim - the upper limit on the absolute magnitude of the galaxies involved in the construction
arxiv   +1 more source

On the role of shear in cosmological averaging II: large voids, non-empty voids and a network of different voids

open access: yes, 2010
We study the effect of shear on the cosmological backreaction in the context of matching voids and walls together using the exact inhomogeneous Lemaitre-Tolman-Bondi solution.
Mattsson, Maria, Mattsson, Teppo
core   +1 more source

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