Results 31 to 40 of about 144,009 (274)

Surface Modification of Red Brass Alloy by Using Laser Technique [PDF]

open access: yesEngineering and Technology Journal, 2016
Laser shock processing technique was performed on red brass alloy type C83300 specimens for the purpose ofstudy its effect on the mechanical properties such as micro-hardness and surface roughness. LSP experimental setup system involved Q-switched Nd:YaG
Abdulhadi Kadhim   +2 more
doaj   +1 more source

Review of Hydro-Pneumatic Accumulator Models for the Study of the Energy Efficiency of Hydraulic Systems

open access: yesEnergies, 2023
This review article deals with hydro-pneumatic accumulators (HPAs) charged with nitrogen. The focus is on HPA models used in the study of the energy efficiency of hydraulic systems.
Ryszard Dindorf   +2 more
doaj   +1 more source

Controlled Shock Shells and Intracluster Fusion Reactions in the Explosion of Large Clusters

open access: yes, 2006
The ion phase-space dynamics in the Coulomb explosion of very large ($\sim 10^6 - 10^7$ atoms) deuterium clusters can be tailored using two consecutive laser pulses with different intensities and an appropriate time delay.
Fonseca, R. A.   +3 more
core   +1 more source

Looking at A 0535+26 at low luminosities with NuSTAR [PDF]

open access: yes, 2017
We report on two NuSTAR observations of the HMXB A 0535+26 taken toward the end of its normal 2015 outburst at very low $3-50$ keV luminosities of ${\sim}1.4\times10^{36}$ erg/s and ${\sim}5\times10^{35}$ erg/s which are complemented by 9 Swift ...
Ballhausen, Ralf   +14 more
core   +4 more sources

Three-Dimensional Shock Spectrum of Critical Component for Nonlinear Packaging System

open access: yesShock and Vibration, 2011
To evaluate the shock characteristics of critical component for a nonlinear packaging system, a new concept of three-dimensional shock spectrum was proposed.
Jun Wang   +4 more
doaj   +1 more source

Lorentz Factor Constraint from the very early external shock of the gamma-ray burst ejecta

open access: yes, 2009
While it is generally agreed that the emitting regions in Gamma-Ray Bursts (GRBs) move ultra relativistically towards the observer, different estimates of the initial Lorentz factors, $\Gamma_0$, lead to different, at times conflicting estimates. We show
Abdo   +85 more
core   +1 more source

Temporal properties of the short gamma-ray bursts [PDF]

open access: yes, 2001
A temporal analysis has been performed on a sample of 100 bright gamma-ray bursts (GRBs) with T902s. The two sub-classes of GRBs appear to have the same emission mechanism which is probably caused by internal shocks.
B. McBreen   +17 more
core   +2 more sources

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

open access: yesFEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Comparison of non-invasive cardiac output measurement and pulse-indicated continuous cardiac output monitoring for determining hemodynamic parameters in patients with critical septic shock: a prospective study [PDF]

open access: yes, 2018
Abstract Objective To compare non-invasive cardiac output measurement (NICOM) and pulse-indicated continuous cardiac output (PiCCO) monitoring for determining hemodynamic parameters in patients with critical septic shock and to analyze the correlation between the two techniques.
Zunzhu Li, Hao Wang, Yun Long, Na Cui
openaire   +1 more source

Laser Induced Damage Studies in Borosilicate Glass Using nanosecond and sub nanosecond pulses

open access: yes, 2016
The damage mechanism induced by laser pulse of different duration in borosilicate glass widely used for making confinement geometry targets which are important for laser driven shock multiplication and elongation of pressure pulse, is studied.
Chaurasia, S.   +2 more
core   +1 more source

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