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Characterisation at Cryogenic Temperatures of an Attenuator for an Application of Astrophysical Instrumentation with MKIDs [PDF]

open access: yesSensors
The use of non-cryogenic certified commercial electronics for cryogenic applications may be attractive due to their cost and availability, but it also carries risks related to reliability, performance and thermal compatibility.
Diego Portero-Rodríguez   +7 more
doaj   +2 more sources

The Seven-State RF MEMS Miniaturized Broadband Reconfigurable Step Attenuator [PDF]

open access: yesMicromachines
This paper presents a three-channel reconfigurable step attenuator based on radio frequency (RF) microelectromechanical system (MEMS) switches, in response to the current issues of high insertion loss and low attenuation accuracy of attenuators.
Yuheng Si   +6 more
doaj   +2 more sources

Dual-frequency shift leads to chaos and beating in an erbium-doped fiber laser [PDF]

open access: yesITM Web of Conferences, 2022
We present a dual-frequency shift scheme to produce chaos and beating in an erbium-doped fiber laser while we give this laser physics model including a photo attenuator absorbing the photon, where the absorption frequency of the photo attenuator can be ...
Yan Senlin
doaj   +1 more source

Calcium pyruvate in the attenuation of the water deficit on the agro-industrial quality of ratoon sugarcane

open access: yesBrazilian Journal of Biology, 2023
Sugarcane is one of the largest agricultural commodities when considering the export volume and the number of jobs generated. Sugarcane production in the Brazilian Northeast region is generally low due to several factors, including the irregular rainfall
M. S. Dias   +11 more
doaj   +1 more source

Sea Wave Energy. A Review of the Current Technologies and Perspectives

open access: yesEnergies, 2021
The proposal of new technologies capable of producing electrical energy from renewable sources has driven research into seas and oceans. Research finds this field very promising in the future of renewable energies, especially in areas where there are ...
Domenico Curto   +2 more
doaj   +1 more source

LINEAR GENERATOR PROTOTYPE WITH VERTICAL CONFIGURATION OF SEA WAVE POWER PLANT

open access: yesSpektra: Jurnal Fisika dan Aplikasinya, 2021
There are three types of potential energy sources in the sea: ocean wave energy, tidal energy, and ocean heat energy. Ocean wave energy is a source of considerable energy. Sea waves are an up and down movement of seawater where the energy of sea waves is
Ane Prasetyowati   +2 more
doaj   +1 more source

Development and investigation of input amplifier for the osciloscope

open access: yesMokslas: Lietuvos Ateitis, 2020
Digital oscilloscope’s structure has analog signal acquisition circuit, which transforms signal’s amplitude to fit ADC dynamic range. This circuit is commonly called oscilloscope’s vertical or front-end amplifier.
Andžej Borel
doaj   +1 more source

Water-cooled magnetic coupling drive attenuator design for wiggler light source in the TPS 31A beamline

open access: yesJournal of Synchrotron Radiation, 2022
An attenuator is generally used to decrease the power of an X-ray beam and prevent damage to detector sensors and other optical components. Therefore, attenuators are designed using foil or gas to absorb light source power.
Ming-Ying Hsu   +4 more
doaj   +1 more source

New Wave Energy Converter Design Inspired by the Nenuphar Plant

open access: yesJournal of Marine Science and Engineering, 2022
This paper presents the Nenuphar concept, an innovative wave energy converter designed to use the kinetic and the potential energy of sea waves, based on the motions of seven modules. First, the main characteristics of the Nenuphar and its work principle
Hugo Díaz   +2 more
doaj   +1 more source

Development of impact attenuator analysis tools in crash scenario using Euler method and finite element analysis

open access: yesJournal of Engineering and Applied Science, 2022
The problem considered in this work is the development of simulation method for simulating car crash which utilizes simple car—impact attenuator model developed in MATLAB.
Malik Athafarras   +5 more
doaj   +1 more source

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