Results 81 to 90 of about 104,038 (266)

Workflow for computational fluid dynamics modeling of fixed‐bed reactors packed with metal foam pellets: Hydrodynamics

open access: yesAIChE Journal, Volume 69, Issue 1, January 2023., 2023
Abstract In recent years, the catalyst pellets made of open‐cell metallic foams have been identified as a promising alternative in fixed‐bed reactors. A reliable modeling tool is necessary to investigate the suitability of different foam properties and the shapes of foam pellets.
Ginu R. George   +7 more
wiley   +1 more source

Omnidirectional and Multi‐Material In Situ 3D Printing Using Acoustic Levitation

open access: yesAdvanced Materials Technologies, EarlyView.
An acoustophoretic 3D fabrication system enabling omnidirectional, multi‐material in situ printing is presented via acoustic levitation. Utilizing a phased array of transducers (PAT), it generates acoustophoretic forces for levitating and transporting materials in mid‐air, allowing precise, contactless, and voxel‐by‐voxel printing onto complex ...
Hongyi Chen   +6 more
wiley   +1 more source

Wide and Deep Learning-Aided Nonlinear Equalizer for Coherent Optical Communication Systems

open access: yesPhotonics
In this study, we developed a wide and deep network-based nonlinear equalizer to compensate for nonlinear impairment in coherent optical communication systems.
Ziyun Jiang, Xinyu Liu, Liuchao Zhang
doaj   +1 more source

Semantic foundations of equality saturation [PDF]

open access: yesarXiv
Equality saturation is an emerging technique for program and query optimization developed in the programming language community. It performs term rewriting over an E-graph, a data structure that compactly represents a program space. Despite its popularity, the theory of equality saturation lags behind the practice.
arxiv  

Comparative Test of Novel Fluorescent Optical Antennas for LED‐ and Laser‐Based Optical Wireless Communications

open access: yesAdvanced Optical Materials, EarlyView.
New fluorescent optical antennas are realized and tested for diverse Optical Wireless Communication (OWC) applications. The fluorescent concentrator slabs, based on different organic fluorophores, convert and convey the digital data conveyed through intensity modulation of incoming light toward a small‐area photodiode.
Marco Meucci   +8 more
wiley   +1 more source

Equalization Methods for NLIN Mitigation [PDF]

open access: yesarXiv, 2017
We investigate the potential of adaptive equalization techniques to mitigate inter-channel nonlinear interference noise (NLIN). We derive a lower bound on the mutual information of a system using adaptive equalization, showing that the channel estimation error determines the equalizer's performance. We develop an adaptive equalization scheme which uses
arxiv  

A Modular Low‐Cost 3D Uniformly Illuminated Mini‐Photoreactor with Versatile In‐Situ Analysis

open access: yesAdvanced Optical Materials, EarlyView.
A “green” Do‐It‐Yourself (DIY)‐realizable mini‐photoreactor made from cheap commercially available parts delivers unprecedented 3D uniform illumination with minimal wastage of photons, and additionally permits in situ much‐demanded analytical tools (absorption, fluorescence, and NMR spectroscopy).
Yuriy Shpinov   +6 more
wiley   +1 more source

Coincidence and noncoincidence of dimensions in compact subsets of $[0,1]$ [PDF]

open access: yesarXiv, 2018
We show that given any six numbers $r,s,t,u,v,w \in (0,1]$ satisfying $r \leq s \leq \min(t,u) \leq \max(t,u) \leq v \leq w$, it is possible to construct a compact subset of $[0,1]$ with Hausdorff dimension equal to $r$, lower modified box dimension equal to $s$, packing dimension equal to $t$, lower box dimension equal to $u$, upper box dimension ...
arxiv  

Chemical AI in the Limelight: The Contribution of Photochromic Materials and Oscillatory Chemical Reactions

open access: yesAdvanced Optical Materials, EarlyView.
Photochromic compounds are versatile ingredients for the development of Chemical AI. When they are embedded in a tight microenvironment, they become Markov blankets. They are also valuable for processing Boolean and Fuzzy logic. They contribute to neuromorphic engineering in wetware based on opto‐chemical signals exchanged with oscillatory chemical ...
Pier Luigi Gentili
wiley   +1 more source

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