Results 41 to 50 of about 157,153 (280)
Viscosity of Colloidal Suspensions
, 1996 Simple expressions are given for the Newtonian viscosity $\eta_N(\phi)$ as well as the viscoelastic behavior of the viscosity $\eta(\phi,\omega)$ of neutral monodisperse hard sphere colloidal suspensions as a function of volume fraction $\phi$ and ...
Cohen, E. G. D. +2 more
core +2 more sources
Calculation of transmission coefficients for omega signals penetrating into sea water
Electronics Letters, 1978 Approximate expressions for the transmission coefficients for v.l.f. waves (10.2?13.6 kHz) incident on an air-sea boundary give values in good agreement with those obtained by more elaborate methods of calculation.
P.J.D. Gething, A. Mobbs
openaire +1 more source
The equivalent medium for the elastic scattering by many small rigid bodies and applications
, 2016 We deal with the elastic scattering by a large number $M$ of rigid bodies, $D_m:=\epsilon B_m+z_m$, of arbitrary shapes with ...
Al-Musallam, Fadhel +2 more
core +1 more source
Symmetries and causes of the coincidence of the radiation spectra of mirrors and charges in 1+1 and 3+1 spaces [PDF]
, 1998 This paper discusses the symmetry of the wave field that lies to the right and left of a two-sided accelerated mirror in 1 + 1 space and satisfies a single condition on it.
Ritus, V. I.
core +2 more sources
Indirect and direct energy gaps in the Kondo semiconductor YbB12
, 2005 Optical conductivity [$\sigma(\omega)$] of the Kondo semiconductor YbB$_{12}$ has been measured over wide ranges of temperature ($T$=8$-$690 K) and photon energy ($\hbar \omega \geq$ 1.3 meV).
Aeppli G. +26 more
core +1 more source
, 2002 We derive the transmission coefficient, $T(\omega)$, for grazing incidence of crystals with spatial dispersion accounting for the excitation of multiple modes with different wave vectors ${\bf k}$ for a given frequency $\omega$. The generalization of the
A. R Bishop +12 more
core +1 more source
A Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller
International Journal of Adaptive Control and Signal Processing, EarlyView.Block Diagram of the Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller. ABSTRACT This article introduces a discrete‐time robust adaptive one‐sample‐ahead preview super‐twisting sliding mode controller. A stability analysis of the controller by Lyapunov criteria is developed to demonstrate its robustness in handling both ...
Guilherme Vieira Hollweg +5 more
wiley +1 more source
Communications in PhysicsTheoretical study on the nonlinear absorption of a strong electromagnetic waves in infinite semi-parabolic plus semi-inverse Squared Quantum Wells (ISPPSISQW) by using quantum kinetic equations for electron in the case of electron-acoustic phonon ...
Thu Huong Nguyen +4 more
doaj +1 more source
Multiplicity result for mixed local and nonlocal Kirchhoff problems involving critical growth [PDF]
Opuscula MathematicaIn this paper, we study the multiplicity of nonnegative solutions for the following nonlocal elliptic problem \[\begin{cases}M\Big(\ \int_{\mathbb{R}^N}|\nabla u|^2dx+\iint_{\mathbb{R}^{2N}}\frac{|u(x)-u(y)|^2}{|x-y|^{N+2s}}dxdy\Big)\mathcal{L}(u ...
Vinayak Mani Tripathi
doaj +1 more source
Frontiers in Public Health, 2023 ObjectiveThe aim of this research was to adapt and explore the psychometric properties of a specific scale to assess the levels of fear and anxiety of COVID-19 disease in pregnant women.MethodsAn adaptation phase, by a panel of experts, and a ...
Francisco Javier Muñoz-Vela +8 more
doaj +1 more source