This note discusses the peridynamic horizon (the nonlocal region around a material point), its role, and practical use in modeling. The objective is to eliminate some misunderstandings and misconceptions regarding the peridynamic horizon. An example of crack branching in a nominally brittle material (homalite) is addressed and we show that crack branching takes place without wave interaction. W...

An experiment investigating the photoelectron instability has been performed in BEPC at IHEP, China. The betatron oscillation of each bunch was observed and recorded by a single pass beam position monitor system which has a capability to measure the transverse position of every bunch over 16000 turns. The effect of an octupole magnet on the instability was also studied. This paper describes res...

F. Rohlfing,1 G. Tkachov,2,* F. Otto,1 K. Richter,2 D. Weiss,1 G. Borghs,3 and C. Strunk1 1Institute for Experimental and Applied Physics, Universität Regensburg, D-93040 Regensburg, Germany 2Institute for Theoretical Physics, Universität Regensburg, D-93040 Regensburg, Germany 3Interuniversity Micro-Electronics Center (IMEC), Kapeldreef 75a, B-3001 Leuven, Belgium Received 27 February 2009; re...

This paper deals with the homogenization of the Hall effect in three-dimensional composites. We prove that the homogenized Hall coefficients are bounded from above by means of prescribed bounds on the local conductivity and the local Hall coefficient. Then, three microstructures of different nature are presented in order to show that arbitrarily large effective Hall coefficients may be obtained...

We propose a scheme for generating Rashba spin-orbit coupling and a perpendicular Zeeman field simultaneously for cold fermionic atoms in a harmonic trap through the coupling between atoms and laser fields. The realization of Rashba spin-orbit coupling and a perpendicular Zeeman field provides opportunities for exploring many topological phenomena using cold fermionic atoms. We focus on the int...

This paper reviews the implementation of an on-site comparison of quantum Hall resistance standards and their scaling to other values. This comparison, organized by the Bureau International des Poids et Mesures (BIPM), is registered as BIPM.EM-K12 and has for objective the verification of the international equivalence of the representation of the ohm between National Metrology Institutes within...

this study was conducted to determine the effects of increasing lighting after peak production on eggs production and hatchable eggs in broiler breeder hubbard f15. in this research we used from 4 growing saloons, that in per saloons were 5250 hubbards broiler breeder hens. in this experiment we used by line design way of glm for analysed data, that we considered the effects of two parameters, ...

recently, increasing attention has been directed to the isolation of natural active components from various medicinal plants. in the present research, the extraction of essential oil from horehound (m. vulgare l.) is presented. effects of mass ratio and particle size on the process performance were studied and kinetics were determined. the chemical composition of the volatiles present in m. vul...