Results 61 to 70 of about 17,328,388 (374)

Hamiltonian Approach to Internal Wave-Current Interactions in a Two-Media Fluid with a Rigid Lid [PDF]

open access: yes, 2015
We examine a two-media 2-dimensional fluid system consisting of a lower medium bounded underneath by a flatbed and an upper medium with a free surface with wind generated surface waves but considered bounded above by a lid by an assumption that surface ...
Compelli, Alan, Ivanov, Rossen
core   +2 more sources

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

open access: yesFEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

THE CHOICE OF METHODS FOR THE DETERMINATION OF MECHANICAL LOSSES IN THE TRACTION MOTORS DC AND RIPPLE CURRENT

open access: yesNauka ta progres transportu, 2010
The analysis of experimental methods for determination of mechanical losses of power in the hauling electric engines of direct current is presented.
A. M. Afanasov
doaj  

Performance Evaluation of PEMFC Single Cells under Constant Voltage and Constant Current Conditions

open access: yes한국해양공학회지
Operating conditions significantly affect the durability of polymer electrolyte membrane fuel cells (PEMFC) in marine applications. This study presents experimental results for the performance evaluation of PEMFC single cells under constant voltage and ...
Seon Hyeong Lee   +6 more
doaj   +1 more source

Characterization and Morphology of Copper Powder Particles as a Function of Different Electrolytic Regimes

open access: yesInternational Journal of Electrochemical Science, 2010
The effect different deposition regimes (constant and reversing currents), on the powdered copper electrodeposits morphology were investigated. The results obtained in constant regimes were compared with those obtained in reversing regimes.
M.G. Pavlović   +4 more
doaj   +1 more source

Research on robot wireless charging system based on constant-voltage and constant-current mode switching

open access: yesEnergy Reports, 2022
The traditional wired charging of robot has the disadvantages of inconvenient charging and manual operation for electrical connection. With the continuous development of radio power transmission, the disadvantages of wired charging are overcome, and the ...
Wenlan Gong   +5 more
doaj   +1 more source

Luminescent screen composition for cathode ray tubes [PDF]

open access: yes, 1968
Screen composition for cathode ray tubes exhibits differential color of emission as a function of beam current variation at a constant accelerating voltage.
Hilborn, E. H.
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

Design of the Converter Prototype for Powering the Hydrogen Electrolyzer

open access: yesApplied Sciences
Electrolysis, which uses direct current, is the most common way to produce hydrogen gas. However, its efficiency is very low, about 70%. The method used when current pulses are used by electrolysis is called pulse electrolysis. According to other studies,
Tomáš Paulec   +3 more
doaj   +1 more source

Electrical Conductivity of Lignocellulose Composites Loaded with Electrodeposited Copper Powders. Part II. Influence of Particle Size on Percolation Threshold

open access: yesInternational Journal of Electrochemical Science, 2012
This article is concerned with synthesis and characterization of electroconductive composite materials prepared by the compression molding of mixtures of lignocellulose and electrochemically deposited copper powder under different pressures, and ...
M.M. Pavlović   +5 more
doaj   +1 more source

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