Results 71 to 80 of about 885,099 (311)

Radio Frequency Interference Management with Free-Space Optical Communication and Photonic Signal Processing [PDF]

open access: yesarXiv, 2021
We design and experimentally demonstrate a radio frequency interference management system with free-space optical communication and photonic signal processing. The system provides real-time interference cancellation in 6 GHz wide bandwidth.
arxiv  

Interaction between bacterial phytochromes Agp1 and Agp2 of Agrobacterium fabrum by fluorescence resonance energy transfer and docking studies

open access: yesFEBS Letters, Volume 599, Issue 6, Page 848-865, March 2025.
The interaction between Agrobacterium fabrum phytochromes Agp1 and Agp2 was studied using FRET. Full‐length and truncated proteins with varied label positions provided spatial insights, narrowing down from many docking models to three. These models explain Agp2's reduction in Agp1 autophosphorylation, with Arg83 of Agp2 specifically evolved to interact
Afaf El Kurdi   +7 more
wiley   +1 more source

Segmentation-assisted detection of dirt impairments in archived film sequences [PDF]

open access: yes, 2007
A novel segmentation-assisted method for film dirt detection is proposed. We exploit the fact that film dirt manifests in the spatial domain as a cluster of connected pixels whose intensity differs substantially from that of its neighborhood and we ...
Ren, Jinchang, Vlachos, T.
core   +1 more source

Topology in Sound Synthesis and Digital Signal Processing -- DAFx2022 Lecture Notes [PDF]

open access: yesarXiv, 2022
Lecture notes of a tutorial on topology in sound synthesis and digital signal processing held at international conference for digital audio effects (DAFx-22) in Vienna, Austria.
arxiv  

Fiber-distributed Signal Processing: Where the Space Dimension Comes into Play [PDF]

open access: yesOSA Advanced Photonics Congress, New Orleans, US, paper W1D. 1, 2017, 2018
We present how to implement fiber-distributed signal processing in the context of fiber-wireless communications by using different multicore fibers, providing both radio access distribution and microwave photonics signal processing in the same fiber medium.
arxiv   +1 more source

Elucidation of interface interactions between a dehydratase domain and an acyl carrier protein in cremimycin polyketide synthase

open access: yesFEBS Letters, Volume 599, Issue 8, Page 1159-1168, April 2025.
In modular polyketide synthases, the dehydratase (DH) domain catalyzes the dehydration reaction of the β‐hydroxyacyl unit attached to the cognate acyl carrier protein (ACP) domain. However, it is unclear how DH interacts with ACP during the reaction. In this study, we identified DH–ACP interface residues, providing the first detailed insights into DH ...
Kaede Kotagiri   +8 more
wiley   +1 more source

Performance Evaluation of Distributed-Antenna Communications Systems Using Beam-Hopping

open access: yes, 2005
Digital beamforming (DBF) techniques are capable of improving the performance of communications systems significantly. However, if the transmitted signals are conflicted with strong interference, especially, in the direction of the transmitted beams ...
Hu, H., Yang, L.-L., Zhu, J.
core   +1 more source

The performance of microwave photonic signal processors based on microcombs with different input signal waveforms [PDF]

open access: yesMDPI Photonics Volume 10, 10111283 (2023)
Microwave photonic (MWP) signal processors, which process microwave signals based on pho-tonic technologies, bring advantages intrinsic to photonics such as low loss, large processing bandwidth, and strong immunity to electromagnetic interference. Optical microcombs can offer a large number of wavelength channels and compact device footprints, which ...
arxiv   +1 more source

Characteristics of the Kelch domain containing (KLHDC) subfamily and relationships with diseases

open access: yesFEBS Letters, Volume 599, Issue 8, Page 1094-1112, April 2025.
The Kelch protein superfamily includes 63 members, with the KLHDC subfamily having 10 proteins. While their functions are not fully understood, recent advances in KLHDC2's structure and role in protein degradation have highlighted its potential for drug development, especially in PROTAC therapies.
Courtney Pilcher   +6 more
wiley   +1 more source

Computerized invasive measurement of time-dependent intraocular pressure

open access: yesBrazilian Journal of Medical and Biological Research, 2006
Several methods have been described to measure intraocular pressure (IOP) in clinical and research situations. However, the measurement of time varying IOP with high accuracy, mainly in situations that alter corneal properties, has not been reported ...
T.V.O. Campos   +4 more
doaj  

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