نتایج جستجو برای: electric strength

تعداد نتایج: 345381  

Journal: :The Journal of experimental biology 2011
Christopher W Jackson Edmund Hunt Suleiman Sharkh Philip L Newland

Static electric fields are found throughout the environment and there is growing interest in how electric fields influence insect behaviour. Here we have analysed the locomotory behaviour of cockroaches (Periplaneta americana) in response to static electric fields at levels equal to and above those found in the natural environment. Walking behaviour (including velocity, distance moved, turn ang...

2000
X. Tan Z. Xu J. K. Shang

In situ transmission electron microscopy study of electric field-induced cracking has been conducted on ^001& oriented 0.65Pb~Mg1/3Nb2/3!O3 – 0.35PbTiO3 crystal. Fracture of the 90° domain boundary was directly observed in the tetragonal area under both static and alternating electric fields. The field strength required to induce domain boundary cracking was lower for alternating electric field...

Journal: :The Journal of chemical physics 2010
Qi Wei Sabre Kais Yong P Chen

We propose a new entanglement switch of qubits consisting of electric dipoles oriented along or against an external electric field and coupled by the electric dipole-dipole interaction. The pairwise entanglement can be tuned and controlled by the ratio of the Rabi frequency and the dipole-dipole coupling strength. Tuning the entanglement can be achieved for one, two, and three-dimensional arran...

Journal: :Applied and environmental microbiology 2004
A J van der Borden H C van der Mei H J Busscher

Infection of percutaneous biomaterials implants, such as fixation frames used for the repair of complicated fractures in orthopedics, is a major complication that almost inevitably leads to replacement of the implant. As antibiotic therapy usually has little impact on biomaterial-associated infections, it is the aim of this article to examine whether implant-associated Staphylococcus epidermidi...

Journal: :IEEE Journal on Selected Areas in Communications 2002
Aleksandar Neskovic Natasa Neskovic Djordje Paunovic

A new macrocell prediction model for mobile radio environment is presented. The use of feedforward artificial neural networks makes it possible to overcome some important disadvantages of previous prediction models, including both deterministic and statistical types. Our sample implementation is based upon extensive electric field strength measurements (in the 900-MHz frequency band) that were ...

Journal: :Journal of colloid and interface science 2011
Levente Csoka Ingrid C Hoeger Perry Peralta Ilona Peszlen Orlando J Rojas

Ultrathin films of cellulose nanocrystals (CNCs) are obtained by using a convective assembly setup coupled with a low-strength external AC electric field. The orientation and degree of alignment of the rod-like nanoparticles are controlled by the applied field strength and frequency used during film formation. Calculated dipole moments and Clausius-Mossotti factors allowed the determination of ...

2016
Fatemeh Setareh Farhad E. Ghodsi

In this paper, the optical properties of the multilayer rugate filter by structure of (HL) ^ 9Hhas been investigated. Here the reflection, optical density and electric field strength of designed filter by using four materials of Ta2O2, Nb2O5 and ZnS as the materials with high refractive indexandSiO2as a material with low refractive index are compared with each other. Finally, it is realized tha...

2009
R. Pires M. Ascoli E. E. Eyler A. Derevianko

We report on hyperfine-resolved spectroscopic measurements of the electric-dipole-forbidden 5p3/2→8p1/2 transition in a sample of ultracold Rb atoms. The hyperfine selection rules enable the weak magnetic dipole M1 contribution to the transition strength to be distinguished from the much stronger electric quadrupole E2 contribution. An upper limit on the M1 transition strength is determined tha...

Journal: :Journal of colloid and interface science 2005
D M Borrok J B Fein

Bacterial surface adsorption reactions are influenced by electric field effects caused by changes in ionic strength; however, existing datasets are too sparse to definitively constrain these differences or to determine the best way to account for them using thermodynamic models. In this study, we examine the ionic strength dependence of proton and metal adsorption onto the surfaces of Pseudomon...

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