Results 11 to 20 of about 7,202,536 (299)

Parametric Studies of Effect of Cavitation Jet Modes on Wear Rate of Surface of Structural Materials

open access: yesMetals, 2022
In this study the kinetic curves of cavitation wear of cast steels 20 GL and 30 L used for production of critical elements of hydraulic machines were obtained.
Alexey Mednikov   +4 more
doaj   +1 more source

Studies of the Solid Particle Erosion Resistance of 30 L Steel with Different Types of Surface Modification

open access: yesMetals, 2023
Earlier studies have shown that 30 L steel, used for the manufacture of hydraulic machinery equipment elements, has greater resistance to cavitation wear than 20 GL steel.
Alexander Tkhabisimov   +2 more
doaj   +1 more source

A Minimal Coherent Receiver for 200 Gb/s/λ PON Downstream With Measured 29 dB Power Budget

open access: yesIEEE Photonics Technology Letters, 2023
We experimentally demonstrate 200 Gb/s/ $\lambda $ downstream transmission for a passive optical network (PON) with a minimal coherent receiver at optical network unit (ONU).
I. B. Kovacs   +2 more
semanticscholar   +1 more source

Development of the Power Simulation Tool for Energy Balance Analysis of Nanosatellites [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2017
The energy balance in a satellite needs to be designed properly for the satellite to safely operate and carry out successive missions on an orbit. In this study, an analysis program was developed using the MATLABⓇ graphic user interface (GUI) for ...
Eun-Jung Kim, Eun-Sup Sim, Hae-Dong Kim
doaj   +1 more source

CubeSat project: experience gained and design methodology adopted for a low-cost Electrical Power System

open access: yesAutomatika, 2022
This paper focuses on experimented space projects run by universities, offering an effective design process to improve learning methods in space engineering.
Kamel Djamel Eddine Kerrouche   +5 more
doaj   +1 more source

A reduced power budget and enhanced performance in a wdm system: a new fbg apodization function

open access: yesOptical and quantum electronics, 2022
The apodization profiles improve chirped fiber Bragg grating (CFBG) capability to compensate dispersion which enhances the performance of the wavelength division multiplexing (WDM) systems.
F. Mustafa, Ahmed F. Sayed, M. Aly
semanticscholar   +1 more source

Performance Analysis of Wavelength Division Multiplexing-Based Passive Optical Network Protection Schemes by Means of the Network Availability Evaluator

open access: yesApplied Sciences, 2022
This paper is focused on the performance analysis of protection mechanisms utilized in common wavelength division multiplexing-based passive optical networks.
Rastislav Róka
doaj   +1 more source

Integrated Flight Control System Characterization Approach for Civil High-Speed Vehicles in Conceptual Design

open access: yesAerospace, 2023
Recent studies have revealed that control surface deflection can cause a reduction in the aerodynamic efficiency of a hypersonic aircraft of up to 30%.
Davide Ferretto   +3 more
doaj   +1 more source

100G PAM-4 PON with 34 dB Power Budget Using Joint Nonlinear Tomlinson-Harashima Precoding and Volterra Equalization

open access: yesEuropean Conference on Optical Communication, 2021
We experimentally demonstrate 100G PAM-4 passive optical network using DML-based intensity modulation and direct detection with 3-dB system bandwidth of 15 GHz in O-band.
Lei Xue   +5 more
semanticscholar   +1 more source

Effect of the Grain Shape on Abrasive Tool Performance [PDF]

open access: yesMATEC Web of Conferences, 2019
The results of studying the effect of the grain shape on abrasive disc performance are presented. The grain shape was conveniently divided into two classes: isometric and non-isometric.
Shepelev Ivan   +2 more
doaj   +1 more source

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