Results 21 to 30 of about 4,701 (230)

Eleutherodactylus pinchoni [PDF]

open access: yes, 2003
Number of Pages: 3Integrative BiologyGeological ...
Boistel, Renaud   +3 more
core   +1 more source

ANALYSIS AND DEVELOPMENT OF THE BUBBLE MODEL OF THE FORMATION STAGE OF HIGH-VOLTAGE BREAKDOWN OF THE WATER GAP

open access: yesElectrical engineering & Electromechanics, 2018
Purpose. A high-voltage underwater electric explosion, realized by discharging a capacitor into a water gap, is characterized by three main stages: the stage of formation of the plasma channel, the channel stage and post-discharge one. Substantially, the
V. G. Zhekul   +4 more
doaj   +1 more source

Field Current Waveform-Based Method for Estimation of Synchronous Generator Parameters Using Adaptive Black Widow Optimization Algorithm

open access: yesIEEE Access, 2020
This article presents a novel method for identification of synchronous generator parameters that is based on sudden short-circuit test data and a novel metaheuristic algorithm, called the adaptive black widow optimization algorithm.
Mihailo Micev   +5 more
doaj   +1 more source

VOCAL REPERTORY OF TWO SPECIES OF THE LEPTODACTYLUS PENTADACTYLUS GROUP (ANURA, LEPTODACTYLIDAE) [PDF]

open access: yes, 2008
Among frogs, vocalizations play important roles in their social interactions. Herein we describefi ve new types of vocalizations for two foam-nesting species of the Leptodactylus pentadactylusgroup, L. syphax and L. labyrinthicus. Behavioral observations
da Silva, Wagner Rodrigues   +2 more
core   +2 more sources

Variable mechanisms of action of lithium during generating of membrane potential oscilations across the excitable membrane of the Nitela cell [PDF]

open access: yesZbornik Matice Srpske za Prirodne Nauke, 2012
This study presents results on variable mechanisms of lithium transport processes during generating of membrane potential oscillations across the very excitable membrane of the Nittela cell.
Radenović Čedomir N.   +3 more
doaj   +1 more source

Resource-saving current protections for electrical installations with isolated phase busducts

open access: yesAlexandria Engineering Journal, 2022
Protections are suggested on the basis of a current relay with two capacitors and a reed switch, which is mounted at a safe distance from a busbar inside the busduct enclosure.
Vladimir Goryunov   +4 more
doaj   +1 more source

Formulas to Explain Popular Oscillometric Blood Pressure Estimation Algorithms

open access: yesFrontiers in Physiology, 2019
Oscillometry is the blood pressure (BP) measurement principle of most automatic cuff devices. The oscillogram (which is approximately the blood volume oscillation amplitude-external pressure function) is measured, and BP is then estimated via an ...
Anand Chandrasekhar   +6 more
doaj   +1 more source

Designing of dynamic calculation model of press with pump-accumulator drive working stroke

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2012
Peculiarities of hydraulic press ram moving on different stages of the working stroke on the basis of experimental oscillogram are considered. Rated scheme of the working stroke with pointing out the assumptions of the “hard” hydraulic drive model is ...
E. S. Korchak, O. M. Shinkarenko
doaj   +3 more sources

Determining the nonlinear damping function using experiments [PDF]

open access: yesОмский научный вестник
In this article, the coefficients of the nonlinear damping function of a mechanical system with one translational degree of freedom are determined from an experimentally obtained oscillogram of free vibrations. The function is modeled using three types
B. A. Kalashnikov   +2 more
doaj   +1 more source

Aerosol particle molecular spectroscopy [PDF]

open access: yes, 1985
The molecular spectroscopy of a solution particle by structure resonance modulation spectroscopy is discussed [S. Arnold and A. B. Pluchino, "Infrared Spectrum of a Single Aerosol Particle by Photothermal Modulation of Structure Resonances," Appl.
Arnold, S., Murphy, E. K., Sageev, G.
core   +1 more source

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