Results 51 to 60 of about 60,070 (308)

Free-space optical neural network based on thermal atomic nonlinearity

open access: yes, 2021
As artificial neural networks (ANNs) continue to make strides in wide-ranging and diverse fields of technology, the search for more efficient hardware implementations beyond conventional electronics is gaining traction.
Albert Ryou (5793224)   +6 more
core   +1 more source

Analysis of Rain Effects on Terrestrial Free Space Optics based on Data Measured in Tropical Climate

open access: yesInternational Islamic University Malaysia Engineering Journal, 2012
Free Space Optics (FSO) shows a great alternative as the solution for last mile problem where fiber optics is unavailable due to deployment time and cost constraint.  However, the feasibility of using FSO system as communication link very much depends on
Suriza Ahmad Zabidi   +3 more
doaj   +1 more source

Limits and security of free-space quantum communications

open access: yesPhysical Review Research, 2021
The study of free-space quantum communications requires tools from quantum information theory, optics, and turbulence theory. Here we combine these tools to bound the ultimate rates for key and entanglement distribution through a free-space link, where ...
Stefano Pirandola
doaj   +1 more source

Engineered extracellular vesicles enriched with the miR‐214/199a cluster enhance the efficacy of chemotherapy in ovarian cancer

open access: yesMolecular Oncology, EarlyView.
Loss of the miR‐214/199a cluster is associated with recurrence in ovarian cancer. Engineered small extracellular vesicles (m214‐sEVs) elevate miR‐214‐3p/miR‐199a‐5p in tumor cells, suppress β‐catenin, TLR4, and YKT6 signaling, reprogram tumor‐derived sEV cargo, reduce chemoresistance and migration, and enhance carboplatin efficacy and survival in ...
Weida Wang   +12 more
wiley   +1 more source

A Hybrid Optical Fiber and FSO System for Bidirectional Communications Used in Bridges

open access: yes, 2015
In this paper, a 10-Gb/s hybrid optical fiber (OF) and free-space optics (FSO) link as part of a bidirectional long-haul OF transmission for application in outdoor environments such as bridges is proposed.
Ghassemlooy, Zabih   +4 more
core   +1 more source

Interrogating the immune landscape of microsatellite stable RAS‐mutated colon cancer

open access: yesMolecular Oncology, EarlyView.
COLOSSUS project RAS‐mutated MSS colon cancer study explored transcriptomics and immune cell density by immunohistochemistry (IHC), Immunoscore (IS), ISIC/TuLIS scores, mutation counts, and detected different prevalences but similar microenvironment composition across immune markers with clinical relevance for future immunotherapy combination ...
Rodrigo Dienstmann   +61 more
wiley   +1 more source

Α dual‐hop equivalent structure of a generalised multi‐hop free‐space optics network

open access: yesIET Communications, 2021
The performance of free‐space optics links strongly depends on scintillation effects caused by the atmospheric turbulence appearance. A widely adopted way to counterbalance the expected deterioration due to scintillation is to employ cooperative and ...
Nikolaos A. Androutsos   +4 more
doaj   +1 more source

Free Space Optical Technologies [PDF]

open access: yes, 2010
Free Space Optics (FSO), also known as Optical Wireless or Lasercom (i.e. Laser Communications), is a re-emerging technology using modulated optical beams to establish short, medium or long reach wireless data transmission. Most of the attention on FSO communication systems it was initially boost by military purposes and first development of this ...
Davide M.   +8 more
openaire   +1 more source

Deciphering transcriptional plasticity in pancreatic ductal adenocarcinoma reveals alterations in sensory neuron innervation

open access: yesMolecular Oncology, EarlyView.
Pancreatic sensory neurons innervating healthy and PDAC tissue were retrogradely labeled and profiled by single‐cell RNA sequencing. Tumor‐associated innervation showed a dominant neurofilament‐positive subtype, altered mitochondrial gene signatures, and reduced non‐peptidergic neurons.
Elena Genova   +14 more
wiley   +1 more source

The effect of atmospheric turbulence on the performance of the free space optical communications [PDF]

open access: yes, 2008
In free space optical (FSO) communication links, atmospheric turbulence has a significant impact on the quality of a laser beam propagating through the atmosphere.
Ghassemlooy, Zabih   +7 more
core   +1 more source

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