Results 31 to 40 of about 51,777 (301)

Optimal sub-arraying of compromise planar arrays through an innovative ACO-weighted procedure [PDF]

open access: yes, 2010
In this paper, the synthesis of sub-arrayed monopulse planar arrays providing an optimal sum pattern and best compromise difference patterns is addressed by means of an innovative clustering approach based on the Ant Colony Optimizer.
Oliveri, Giacomo, Poli, Lorenzo
core   +1 more source

A compact multiband planar antenna using modified L-shape resonator slots

open access: yesHeliyon, 2020
A multiband planar antenna designed and proposed with resonator slots is presented. The proposed antenna consists of a planar hexagonal patch composed of two pairs of resonator slots.
Indu Jiji Rajmohan, Mousa I. Hussein
doaj   +1 more source

Application of metasurfaces in the design of performance-enhanced low-profile antennas

open access: yesEPJ Applied Metamaterials, 2018
This paper presents a review of metasurface-based antennas conducted at the Microwave Communication Laboratory (MCL) of Ajou University in the Republic of Korea.
Park Ikmo
doaj   +1 more source

Modified planar inverted-L antenna [PDF]

open access: yes2003 High Frequency Postgraduate Student Colloquium (Cat. No.03TH8707), 2004
A hybrid inverted-L antenna (HIL) has been shown to reduce the physical height of a square planar monopole antenna, while retaining a relatively wide impedance bandwidth and good radiation pattern characteristics. The introduction of horizontal slots in the vertical edges of the antenna cause the surface current to meander, resulting in a decrease in ...
Evans, Jonathan, Ammann, Max
openaire   +3 more sources

Acute caffeine treatment protects the developing retina from ischemia‐induced cell death

open access: yesFEBS Open Bio, EarlyView.
Caffeine reduces cell death in the developing retina under ischemia (OGD). This effect does not involve BDNF upregulation or antioxidant pathways (NRF2/VEGF). Neuroprotection occurs mainly through adenosine A2A receptor antagonism, decreasing glutamate release and excitotoxicity, highlighting caffeine's potential as an acute neuroprotective agent in ...
Amanda Alves Nascimento   +6 more
wiley   +1 more source

A low profile radiating element with nearly hemispheric coverage for satellite communications on-the-move hybrid array antenna [PDF]

open access: yes, 2010
A novel design solution of a dual-linearly polarised Ku-band low-profile radiating element for low elevation angle coverage (down to 10° above horizon) is presented. Such an element is suitable for full-duplex Satellite Communications On-The-Move (SCOTM)
Foti, Steve   +3 more
core   +1 more source

Sudden anaerobization in Amphibacillus xylanus increases intracellular labile ferrous iron and inhibits cell growth

open access: yesFEBS Open Bio, EarlyView.
Abruptly changing from aerobic to anaerobic conditions (sudden anaerobization) induced growth inhibition and a significant increase in intracellular labile ferrous iron in the aerotolerant anaerobe Amphibacillus xylanus. We found that free flavins mediate efficient electron transfer from NADH to ferric iron under anaerobic conditions, suggesting that ...
Shinya Kimata   +13 more
wiley   +1 more source

Design and Modeling of New UWB Metamaterial Planar Cavity Antennas with Shrinking of the Physical Size for Modern Transceivers

open access: yesInternational Journal of Antennas and Propagation, 2013
A variety of antennas have been engineered with MTMs and MTM-inspired constructs to improve their performance characteristics. This report describes the theory of MTMs and its utilization for antenna's techniques.
Mohammad Alibakhshi Kenari
doaj   +1 more source

RoundMi: A quantitative method to analyze mitochondrial morphology in mitotic cells

open access: yesFEBS Open Bio, EarlyView.
RoundMi is a workflow for rapid analysis of mitochondrial morphology in mitotic cells. By combining adaptive preprocessing with automated segmentation and quantification, it enables accurate measurements from single focal plane images, reducing acquisition time and computational demands while remaining compatible with high‐throughput fixed and live ...
Elmira Parvindokht Bararpour   +2 more
wiley   +1 more source

Multi‐resonance dual‐polarised symmetrically cross‐slotted square patch antenna for 5G millimetre‐wave broadband applications

open access: yesElectronics Letters, 2023
A dual‐polarised symmetrically cross‐slotted square patch (SCSSP) antenna with multimode resonance is proposed for 5G millimetre‐wave broadband applications.
Qi Wu   +5 more
doaj   +1 more source

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