Results 81 to 90 of about 2,017,097 (307)

Incommensurability and spin excitations of diagonal stripes in cuprates

open access: yes, 2009
Based on the time-dependent Gutzwiller approximation we study the possibility that the diagonal incommensurate spin scattering in strongly underdoped lanthanum cuprates originates from antiferromagnetic domain walls (stripes).
G. Seibold   +2 more
core   +1 more source

Terahertz four-wave mixing spectroscopy for study of ultrafast dynamics in a semiconductor optical amplifier [PDF]

open access: yes, 1993
Ultrafast dynamics in a 1.5-µm tensile-strained quantum-well optical amplifier has been studied by highly nondegenerate four-wave mixing at detuning frequencies up to 1.7 THz.
Dawson, Jay W.   +5 more
core   +1 more source

Dynamic Characteristic Identification

open access: yes
This paper introduces a dynamic system parameter extraction approach using experimental data and a known characteristic equation for a single degree of freedom mass-spring-damper system. The efficacy of curve fitting to determine mass, damping, and stiffness for simulated underdamped, critically damped, and overdamped systems is explored.
Clay Jordan, Tommy Hazelwood
openaire   +2 more sources

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

open access: yesFEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe   +3 more
wiley   +1 more source

Shear-band arrest and stress overshoots during inhomogeneous flow in a metallic glass [PDF]

open access: yes, 2012
At the transition from a static to a dynamic deformation regime of a shear band in bulk metallic glasses, stress transients in terms of overshoots are observed.
Derlet, P. M.   +4 more
core   +1 more source

The role of histone modifications in transcription regulation upon DNA damage

open access: yesFEBS Letters, EarlyView.
This review discusses the critical role of histone modifications in regulating gene expression during the DNA damage response (DDR). By modulating chromatin structure and recruiting repair factors, these post‐translational modifications fine‐tune transcriptional programmes to maintain genomic stability.
Angelina Job Kolady, Siyao Wang
wiley   +1 more source

An Investigation of the Effect of the Fault Degree on the Dynamic Characteristics and Crack Propagation of Rolling Bearings

open access: yesApplied Sciences
The incipient faults of rolling bearings are dynamically propagating in the service status. However, the bearing material and the size of the fault will affect its expansion trend and direction. Furthermore, bearings manufactured from different materials
Long Zhang   +7 more
doaj   +1 more source

Dynamic Characteristics in the Nearshore Area

open access: yesCoastal Engineering 1980, 1980
A detailed discussion is made on the dynamic characteristics of waves and wave-induced currents in the nearshore area by using the laboratory and field investigation data collected during the last few years. The main purposes of this paper are to get the insight on the precise mechanism of the nearshore dynamic phenomena and to evaluate critically the ...
Kiyoshi Horikawa, Masahiko Isobe
openaire   +2 more sources

Substrate specificity of Burkholderia pseudomallei multidrug transporters is influenced by the hydrophilic patch in the substrate‐binding pocket

open access: yesFEBS Letters, EarlyView.
Multidrug transporters BpeB and BpeF from the Gram‐negative pathogen Burkholderia pseudomallei have a hydrophilic patch in their substrate‐binding pocket. Drug susceptibility tests and growth curve analyses using an Escherichia coli recombinant expression system revealed that the hydrophilic patches of BpeB and BpeF are involved in the substrate ...
Ui Okada, Satoshi Murakami
wiley   +1 more source

Characterizing the topology dynamics in mobile ad hoc networks:modeling and analyzing techniques using the queuing theory

open access: yesTongxin xuebao, 2011
A new modeling parameter named link broken rate(LBR) was proposed so as to characterize the topology dy-namics.On the basis of the definition of the network dynamic characteristics parameter LBR,the expectations of the time interval between the links ...
QIN Guang-cheng1   +4 more
doaj  

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