Results 11 to 20 of about 2,148,845 (245)
A continuous/discontinuous Galerkin formulation for a strain gradient-dependent damage model [PDF]
, 2004 The numerical solution of strain gradient-dependent continuum problems has been hindered by continuity demands on the basis functions. The presence of terms in constitutive models that involve gradients of the strain field means that the $C^0$ continuity
G. N. Wells +2 more
core +20 more sources
Materials Research Express, 2021 00Cr12Ni9Mo4Cu2 is an ultra- high strength, maraging stainless steel. Optical microscopy, microhardness measurement, scanning electron microscopy (SEM), and transmission electronic microscopy (TEM) were used to quantitatively investigate the effect of ...
Y Z Zhu +5 more
doaj +1 more source
The Importance of Data Reliability and Usability When Assessing Impacts of Marine Mineral Oil Spills
Toxics, 2021 Spilled mineral oils in the marine environment pose a number of challenges to sampling and analysis. Mineral oils are complex assemblages of hydrocarbons and additives, the composition of which can vary considerably depending on the source oil and ...
A. Dallas Wait
doaj +1 more source
Ambient ozone and asthma hospital admissions in Texas: a time-series analysis
Asthma Research and Practice, 2017 Background Many studies have evaluated associations between asthma emergency department (ED) visits, hospital admissions (HAs), and ambient ozone (O3) across the US, but not in Texas.
Julie E. Goodman +5 more
doaj +1 more source
An approach to nonlinear viscoelasticity via metric gradient flows [PDF]
, 2013 We formulate quasistatic nonlinear finite-strain viscoelasticity of rate type as a gradient system. Our focus is on nonlinear dissipation functionals and distances that are related to metrics on weak diffeomorphisms and that ensure time-dependent frame ...
Mielke, A. +4 more
core +1 more source
Method selection of microseismic studies depending on the problem being solved
Georesursy, 2018 The article compares two methods of microseismic studies of the maximum likelihood method and the Keipon method for detecting the position of microseismic event when observed from the surface in the conditions of the developed deposit or by monitoring ...
E.V. Biryaltsev, M.R. Kamilov
doaj +1 more source
Asymmetric (Hot, Warm, Cold, Cryo) Rolling of Light Alloys: A Review
Metals, 2021 Asymmetric sheet rolling is a process used when there are differences in any technological parameters in the horizontal plane across the width of the deformation zone or in the vertical plane between the top and bottom surfaces of the deformation zone ...
Denis Pustovoytov +2 more
doaj +1 more source
Dermal exposure to toluene diisocyanate and respiratory cancer risk
Environment International, 2017 Human exposure to toluene diisocyanate (TDI) occurs mainly through inhalation of vapors in occupational settings where TDI is produced or used, but dermal exposure to TDI is also possible during some operations.
Robyn L. Prueitt +4 more
doaj +1 more source
A Stable Chemokine Gradient Controls Directional Persistence of Migrating Dendritic Cells
Frontiers in Cell and Developmental Biology, 2022 Navigation of dendritic cells (DCs) from the site of infection to lymphoid organs is guided by concentration gradients of CCR7 ligands. How cells interpret chemokine gradients and how they couple directional sensing to polarization and persistent ...
Thomas Quast +7 more
doaj +1 more source
Nonlinear cross Gramians and gradient systems [PDF]
, 2007 We study the notion of cross Gramians for non-linear gradient systems, using the characterization in terms of prolongation and gradient extension associated to the system.
Jacquelien M. A. Scherpen +5 more
core +2 more sources