Results 31 to 40 of about 45,208 (290)

Investigative Study of Vertical Electrodes Encased in Concrete/Mortar with Various Sizes of Air Voids

open access: yesEnergies, 2021
Ionisation can occur in the soil when high impulse currents are subjected to grounding systems. This occurrence is generated by a difference in the dielectric strength value between the soil and air voids.
Hanis Hamizah Hizamul-Din   +3 more
doaj   +1 more source

Insights on Oscillations and Impulses in Variable Impedance Control

open access: yes, 2022
Operational-space impedance control allows to assign a mass-damper-spring (MDS) behavior to the end effector of a robotic manipulator. This aids resilience when interactions with the environment or humans are expected. While changing the virtual mass is not always practicable since it requires using precise force/torque sensors, varying the stiffness ...
Simonini, Giorgio   +5 more
openaire   +1 more source

Regulation of gap junction function; the role of nitric oxide. [PDF]

open access: yes, 2013
Myocardial ischemia resulting from sudden occlusion of a coronary artery is one of the major causes in the appearance of severe, often life-threatening ventricular arrhythmias.
Gönczi, Márton   +3 more
core   +2 more sources

A Study on Frequency Response Functions in Pavement Engineering

open access: yesThe Baltic Journal of Road and Bridge Engineering, 2023
Mechanical impedance (MI) defines the ability of a system to vibrate as a consequence of force application. In the recent years, the correlation of this parameter with tire-road noise and other characteristics has gained certain attention.
Filippo G. Pratico   +3 more
doaj   +1 more source

Frequencies Dominations for Different Rating of Distribution Transformer under Transients [PDF]

open access: yes, 2020
Power transients faults on high voltage lines are prominently due to high frequency transients. These transients affect the predicted life and efficiency of equipment.
Faisal, Haseeb   +3 more
core  

Resonant pumping in a multilayer impedance pump [PDF]

open access: yes, 2008
This paper introduces the concept of multilayer impedance pump, a novel pumping mechanism inspired by the embryonic heart structure. The pump is a composite two-layer fluid-filled elastic tube featuring a thick gelatinous internal.
Avrahami, I., Gharib, M., Loumes, L.
core   +1 more source

Parameter Estimation of a Grid-Tied Inverter Using In Situ Pseudo-Random Perturbation Sources

open access: yesEnergies, 2023
Inverters are playing an increasingly important role in the electrical utility grid due to the proliferation of renewable energy sources. Obtaining inverter models with accurate parameters is, therefore, essential for grid studies and design.
Ian Paul Gerber   +2 more
doaj   +1 more source

Hypervelocity Richtmyer–Meshkov instability [PDF]

open access: yes, 1997
The Richtmyer-Meshkov instability is numerically investigated for strong shocks, i.e., for hypervelocity cases. To model the interaction of the flow with non-equilibrium chemical effects typical of high-enthalpy flows, the Lighthill-Freeman ideal ...
Meiron, Daniel I., Samtaney, Ravi
core   +1 more source

The problem of offset in acoustic pulse reflectometry [PDF]

open access: yes, 2007
Acoustic pulse reflectometry has become established as a useful non-invasive technique for measuring a variety of duct properties. A sound pulse is injected into the duct under investigation and the resultant reflections are recorded.
Li, Aijun, Sharp, David B.
core  

Time-Response Functions of Mechanical Networks with Inerters and Causality

open access: yes, 2017
This paper derives the causal time-response functions of three-parameter mechanical networks that have been reported in the literature and involve the inerter-a two-node element in which the force-output is proportional to the relative acceleration of ...
Makris, Nicos
core   +1 more source

Home - About - Disclaimer - Privacy