Results 201 to 210 of about 10,934,899 (375)

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

Uncover Hidden Physical Information of Soft Matter by Observing Large Deformation

open access: yesAdvanced Science, EarlyView.
Detecting internal abnormalities in soft matter remains challenging due to its heterogeneous nature. This study introduces a method that infers hidden physical properties by matching observed deformation with simulation through parallel Bayesian optimization.
Huanyu Yang   +9 more
wiley   +1 more source

Online machine learning modeling and predictive control of nonlinear systems with scheduled mode transitions

open access: yesAIChE Journal, Volume 69, Issue 2, February 2023., 2023
Abstract This work develops a model predictive control (MPC) scheme using online learning of recurrent neural network (RNN) models for nonlinear systems switched between multiple operating regions following a prescribed switching schedule. Specifically, an RNN model is initially developed offline to model process dynamics using the historical ...
Cheng Hu, Yuan Cao, Zhe Wu
wiley   +1 more source

A Hollow Shell‐Lattice Soft Robot in Flexible Pipelines with Flowing Fluids

open access: yesAdvanced Science, EarlyView.
This study proposes a novel shell‐lattice robot with hollow bodies, capable of crawling through pipes with flowing fluids of high velocities and viscosities and mixed with impurities. The robot also features capabilities of crawling with high payloads, in curved pipes, and unthethered crawling. These unique properties make this robot high promising for
Di Guo, Yiqiang Wang, Zhan Kang
wiley   +1 more source

Homocysteine Promotes the Pathogenesis of Atherosclerosis through the Circ‐PIAS1‐5/miR‐219a‐2‐3p/TEAD1 Axis

open access: yesAdvanced Science, EarlyView.
A model is schematically represented for the major molecular mechanisms by which homocysteine (Hcy) accelerates the nuclear export of circ‐PIAS1‐5, which regulates atherosclerosis by acting as a competing endogenous RNA for miR‐219a‐2‐3p. Hcy enrichment of circ‐PIAS1‐5 leads to YTHDC1 binding to circ‐PIAS1‐5 and promotes its intracellular localization ...
Shengchao Ma   +13 more
wiley   +1 more source

Highly Oriented SiC@SiO2 Ceramic Fiber Aerogels with Good Anisotropy of the Thermal Conductivity and High‐Temperature Resistance

open access: yesAdvanced Science, EarlyView.
The anisotropic‐structure SiC@SiO2 ceramic fiber aerogels feature aligned layers stacking layer‐by‐layer with the same direction and highly oriented 1D fibers inside each layer, resulting in an anisotropy factor as high as 5.08. Not only does it have 60% high recoverable deformation, but it also shows great promise for thermal protection in extreme ...
Zheng Zhang   +7 more
wiley   +1 more source

An inequality for convex functions involving majorization

open access: bronze, 1965
Albert W. Marshall, Frank Proschan
openalex   +1 more source

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