Results 41 to 50 of about 100,503 (296)
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
Time Evolution of Relative Entropies for Anomalous Diffusion
Entropy, 2013 The entropy production paradox for anomalous diffusion processes describes a phenomenon where one-parameter families of dynamical equations, falling between the diffusion and wave equations, have entropy production rates (Shannon, Tsallis or Renyi) that ...
Karl Heinz Hoffmann +3 more
doaj +1 more source
Registration of high-frequency waves on the surface by the interference methods [PDF]
EPJ Web of Conferences, 2019 Capillary waves are frequently used to measure the surface tension of liquids. However, this approach has not found wide application in the manufacture of modern commercial tensiometers because of the limitations imposed by capillary wave excitation ...
Shmyrova Anastasia +3 more
doaj +1 more source
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
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
Results in Physics, 2018 In this research, we investigate one of the most popular model in nature and also industrial which is the pressure equation of bubbly liquids with examination for viscosity and heat transfer which has many application in nature and engineering ...
Mostafa M.A. Khater +2 more
doaj +1 more source
Norm of iegnfunction of one-dimension photonic crystal
Вісник Харківського національногоуніверситету імені В.Н. Каразіна. Серія: Радіофізика та електроніка, 2021 Relevance. In recent decades (about the 90-s ХХ century) there has been rapid development of photonic. Thus, to arise scientific interest to optic range of electromagnetic radiation.
О. V. Kazanko, О. E. Penkina
doaj +1 more source
A Compact Spin‐Coated Graphene UWB Antenna for Breast Tumor Detection
Advanced Engineering Materials, EarlyView.A compact, spin‐coated graphene ultra‐wideband patch antenna designed for breast tumor detection, capable of distinguishing between malignant and benign tumors. This innovative antenna can serve as an effective initial screening tool, particularly in resource‐limited settings such as rural areas, where access to advanced medical equipment like MRI and ...
Raja Rashidul Hasan +9 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
Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
wiley +1 more source