Results 51 to 60 of about 845,814 (307)

A radiometric method for measuring the insertion loss of radome materials [PDF]

open access: yes, 1970
Radiometer system measures effective noise temperature directed towards sky, with and without radome over antenna horn. Data is then translated into computer format.
Seidel, B. L., Stelzried, C. T.
core   +1 more source

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

open access: yesFEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee   +3 more
wiley   +1 more source

A High-Power SPDT Switch With Resonant Isolation Based on GaAs BiFET Technology for Sub-6-GHz Front-End Modules

open access: yesIEEE Access
In this study, we present the design of a single-pole double-throw (SPDT) switch for Sub-6 GHz applications, implemented using a 500-nm GaAs BiFET process. To enhance power handling capability, multi-gate transistors are selectively employed.
Jaehyun Kwon   +3 more
doaj   +1 more source

Estimation of Ferroelectric Material Properties and Phase-Shifter Design Key Parameters Influence on Its Figure of Merit for Optimization of Development Process

open access: yesCrystals, 2021
A model of the estimation of the ferroelectric-based phase-shifter figure of merit concerning the material properties and phase-shifter design parameters is presented.
Alexander Gagarin   +3 more
doaj   +1 more source

Rotary antenna attenuator [PDF]

open access: yes, 1969
Radio frequency attenuator, having negligible insertion loss at minimum attenuation, can be used for making precise antenna gain measurements.
Dickinson, R. M., Hardy, J. C.
core   +1 more source

Low-Loss THz Waveguide Bragg Grating using a Two-Wire Waveguide and a Paper Grating

open access: yes, 2013
We propose a novel kind of the low-loss THz Waveguide Bragg Grating (TWBG) fabricated using plasmonic two-wire waveguide and a micromachined paper grating for potential applications in THz communications.
Bock, Wojtek J.   +5 more
core   +1 more source

Comparison of the qCON and qNOX indices for the assessment of unconsciousness level and noxious stimulation response during surgery [PDF]

open access: yes, 2016
The objective of this work is to compare the performances of two electroencephalogram based indices for detecting loss of consciousness and loss of response to nociceptive stimulation.
Agustí, Mercé   +8 more
core   +2 more sources

Organ‐specific redox imbalances in spinal muscular atrophy mice are partially rescued by SMN antisense oligonucleotides

open access: yesFEBS Letters, EarlyView.
We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley   +1 more source

Modelling the Acoustic Properties of Baffles Made of Porous and Fibrous Materials

open access: yesArchives of Acoustics
The research described in the article addresses the problem of measurement, prediction and practical use of the acoustic properties of materials determined in an impedance tube.
Krzysztof KOSAŁA
doaj   +1 more source

Possibilities of Evaluating the Effectiveness of Noise Barriers in Slovakia

open access: yesApplied Sciences, 2021
This paper presents environmental acute problems from increasing noise levels caused by automobile and rail transport. Noise barriers are considered to be an effective element in reducing noise in densely populated urban areas. However, do these barriers
Alžbeta Pultznerová   +2 more
doaj   +1 more source

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