Results 51 to 60 of about 25,871,581 (275)
One way wave equation type ABCs for terminatinglow loss media
Electronics Letters, 1997 Absorbing boundary condition (ABC) formulations are derived for low loss media from lossy one way wave equations. The results of a numerical study are presented showing that errors in a low loss computational domain, due to the reflections from the domain boundaries, are significantly lower when the boundaries are terminated by these ABCs instead of ...
Ramadan, O, Niazi, AY
openaire +2 more sources
Arthritis Care &Research, EarlyView.Objective To investigate the association between rheumatoid arthritis (RA) and coronary artery calcium (CAC) prevalence, incidence, and progression over four years in adults without prior cardiovascular disease. Methods A case‐cohort study within the Brazilian Longitudinal Study of Adult Health (ELSA‐Brasil) included 585 participants (86 patients with ...
Patrícia Fonseca Estrada +7 more
wiley +1 more source
Ain Shams Engineering JournalIn this paper, we have studied the generalized shallow water wave equation with variable coefficients which represent different wave phenomena as tidal waves, irrigation flows, tsunamis, storm surges, and atmospheric waves by using two different ...
Rehab M. El-Shiekh, Mahmoud Gaballah
doaj +1 more source
Fluids, 2020 The near-shore and estuary environment is characterized by complex natural processes. A prominent feature is the wind-generated waves, which transfer energy and lead to various phenomena not observed where the hydrodynamics is dictated only by currents ...
Yong G. Lai, Han Sang Kim
doaj +1 more source
Arthritis Care &Research, EarlyView.Objective The aim of this study was to test the hypothesis that multijoint osteoarthritis would modify the relation between time and frailty progression, in which more affected joints would lead to larger declines over six years compared to those without osteoarthritis using data from the Canadian Longitudinal Study on Aging.
Carson Halliwell +2 more
wiley +1 more source
Arthritis Care &Research, EarlyView.Objective Systemic sclerosis (SSc) is characterized by cardiovascular risk excess not fully explained by traditional factors. Whether the severity of microvascular damage correlates with structural subclinical atherosclerosis remains unclear. We investigated the relationship between nailfold videocapillaroscopy (NVC) abnormalities and carotid ...
Eugenio Capparelli +13 more
wiley +1 more source
A global investigation of solitary-wave solutions to a two-parameter model for water waves [PDF]
, 1996 The model equation (2r''''/15)-(br'')+(ar)+(3r^2/2)-((r')^2/2)+[rr']'=0 arises as the equation for solitary-wave solutions to a fifth-order long-wave equation for gravitycapillary water waves.
Groves, MD, Champneys, AR
core
One-way wave-equation migration for wide-angle propagation in anisotropic media [PDF]
, 2010 Seismic depth migration is a major component in the search for hydrocarbons. As new prospects for oil and gas often are found in areas with challenging subsurface structures, more advanced methods to find and evaluate these prospects are needed.
Pedersen, Ørjan
core +1 more source
Arthritis Care &Research, Accepted Article.Objective Existing patient‐reported outcome (PRO) measures for systemic sclerosis (SSc) have important limitations, including inadequate coverage of early disease and limited inclusion of diffuse cutaneous (dcSSc) and limited cutaneous (lcSSc) subtypes.
George J. Greene +5 more
wiley +1 more source
Advanced Engineering Materials, Volume 27, Issue 6, March 2025.ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur +5 more
wiley +1 more source