Results 41 to 50 of about 36,566 (236)

Contrasting space-time schemes for MIMO FSO systems with non-coherent modulation [PDF]

open access: yes, 2012
International ...
Bourennane, Salah   +4 more
core   +3 more sources

Simple and Universal Current Modulator Circuit for Indoor Mobile Free-Space-Optical Communications Testing

open access: yesAdvances in Electrical and Electronic Engineering, 2014
The use of LED for illumination and communication together is more and more interesting with the increasing deployment of LEDs to our homes and industrial buildings.
Stanislav Hejduk   +5 more
doaj   +1 more source

Current optical technologies for wireless access [PDF]

open access: yes, 2009
The objective of this paper is to describe recent activities and investigations on free-space optics (FSO) or optical wireless and the excellent results achieved within SatNEx an EU-framework 6th programme and IC 0802 a COST action.
Awan, Muhammad   +8 more
core  

Creating Cell‐Based Hybrid Noodles for Sustainable and Nutrient‐Balanced Diets via a Serum‐Free and Animal‐Free 3D Co‐Differentiation System

open access: yesAdvanced Science, EarlyView.
This study develops a 3D co‐culture and co‐differentiation system for porcine muscle stem cells (pMuSCs) and mesenchymal stem cells (pMSCs) on edible starch‐based scaffolds. The system simultaneously generates myotubes and adipocytes without using serum or chemical inducers.
Xin Guan   +9 more
wiley   +1 more source

On the Capacity Performance of Hybrid FSO/RF System With Adaptive Combining Over Generalized Distributions

open access: yesIEEE Photonics Journal, 2022
This paper investigates the ergodic capacity performance of hybrid free space optics (FSO)/ radio frequency (RF) system by employing an adaptive-combining-based switching scheme.
Narendra Vishwakarma, Swaminathan R
doaj   +1 more source

BER and outage probability of DPSK subcarrier intensity modulated free space optics in fully developed speckle. [PDF]

open access: yes, 2009
In this paper a differential phase shift keying (DPSK) subcarrier intensity modulated (SIM) free space optical (FSO) link is considered in negative exponential atmospheric turbulence environment.
Ghassemlooy, Zabih   +2 more
core   +2 more sources

The cranial, mandibular, and hyoid anatomy of softshell turtles (Trionychidae): A revised character list for phylogenetic analysis

open access: yesThe Anatomical Record, EarlyView.
Abstract Softshell turtles (Pan‐Trionychidae) are an early branching clade of hidden‐necked turtles (Cryptodira) with a rich fossil record extending back to the Early Cretaceous. The evolutionary history of softshell turtles is still unresolved because of their conservative morphology combined with high levels of polymorphism related to morphological ...
Léa C. Girard, Walter G. Joyce
wiley   +1 more source

Dispersion‐Enhanced Nitrogen‐Centered Photocatalysis of the Direct Hydrogen Atom Transfer

open access: yesAngewandte Chemie, Volume 138, Issue 6, 2 February 2026.
Nitrogen‐centered acridine photocatalysts for direct hydrogen atom transfer have been developed, leveraging dispersion interactions to enhance photocatalytic activity. This approach enables diverse functionalization reactions of strong C─H bonds even under cryogenic conditions and provides a new strategy for boosting the efficiency of direct HAT ...
Jiasong Zhang   +16 more
wiley   +2 more sources

Investigation of turbulence effect on the free space optical link for ground-to-train communications [PDF]

open access: yes, 2011
There is a growing demand for high mobility and ultrafast internet/data services which drives the motivation for free space optical (FSO) communications for high speed trains.
Ghassemlooy, Zabih   +4 more
core  

Streamwise forced oscillations of circular and square cylinders [PDF]

open access: yes, 2012
The modification of a cylinder wake by streamwise oscillation of the cylinder at the vortex shedding frequency of the unperturbed cylinder is reported. Recent numerical simulations [J. S. Leontini, D. Lo Jacono, and M. C.
Leontini, Justin S.   +3 more
core   +4 more sources

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