Results 51 to 60 of about 32,664 (261)
Advanced Functional Materials, EarlyView.This work introduces an ultrafast thermal shock strategy to synthesize a CuNiSnLa medium‐entropy metallic glass (MEMG). The rapid heating and cooling process generates a robust, highly active catalyst for electrocatalytic nitrate reduction to ammonia (NRA).
Hongbo Chen +7 more
wiley +1 more source
Passive Control of Low-Frequency Instability in Hybrid Rocket Combustion
Aerospace, 2021 The occurrence of low-frequency instability (LFI) appears to be related to multiple interactions among many complex physical processes, such as vortex shedding, boundary-layer oscillation, and additional combustion in the post-combustion chamber. In this
Wonjeong Hyun +3 more
doaj +1 more source
Mesoporous Silica Nanoparticles in Biomedicine: Advances and Prospects
Advanced Materials, EarlyView.Mesoporous silica nanoparticles offer unique properties like high surface area, tunable pores, and functionalization. They excel in drug delivery, tissue engineering, and stimuli‐responsive therapies, enabling targeted and controlled treatments. With roles in cancer therapy and diagnostics, their clinical translation requires addressing challenges in ...
Miguel Manzano, María Vallet‐Regí
wiley +1 more source
Modified Regression Rate Formula of PMMA Combustion by a Single Plane Impinging Jet
International Journal of Aerospace Engineering, 2017 A modified regression rate formula for the uppermost stage of CAMUI-type hybrid rocket motor is proposed in this study. Assuming a quasi-steady, one-dimensional, an energy balance against a control volume near the fuel surface is considered. Accordingly,
Tsuneyoshi Matsuoka +3 more
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Modeling of High Density Polyethylene Regression Rate in the Simulation of Hybrid Rocket Flowfields
Aerospace, 2019 Numerical analysis of hybrid rocket internal ballistics is carried out with a Reynolds-averaged Navier−Stokes solver integrated with a customized gas−surface interaction wall boundary condition and coupled with a radiation code based on the ...
Daniele Bianchi +4 more
doaj +1 more source
Optoelectronic Nanofluidic Neural Networks for Ionic Computing
Advanced Materials, EarlyView.An ion‐based optoelectronic nanofluidic memristor enables neuromorphic computing in aqueous environments. With tunable ionic memory and multimodal synaptic plasticity, it realizes densely connected ionic neural networks capable of image classification, motion prediction, logic computation, and real‐time in‐sensor computing, advancing fully connected ...
Yaxin Huang +10 more
wiley +1 more source
Characterization and manufacturing of a paraffin wax as fuel for hybrid rockets
Propulsion and Power Research, 2018 The hybrid propulsion performed with paraffin waxes exhibits most attractive capabilities compared to solid or liquid engines, e.g., throttleability and re-ignition, alongside higher regression rates compared to the conventional hydroxyl terminated ...
F. Piscitelli +4 more
doaj +1 more source
Optimization and Experimental Approaches to the Direct Methanol Fuel Cell Stack Using a Response Surface Methodology [PDF]
Journal of Renewable Energy and Environment, 2019 The power density of a direct methanol fuel cell (DMFC) stack as a function of temperature, methanol concentration, oxygen flow rate, and methanol flow rate was studied using a response surface methodology (RSM) to maximize the power density.
Shima Sharifi +3 more
doaj +1 more source
Mechanistically Interpretable Artificial Intelligence for Designing Oxygen Electrocatalysts
Advanced Materials, EarlyView.Mechanistically interpretable artificial intelligence screens nearly seven million perovskite compositions and identifies key descriptors—d‐p hybridization and densification resistance—that govern oxygen electrocatalysis. The discovered BaCo0.8Nb0.1Zr0.1O3‐δ achieves a record 2.68 W cm−2 peak power density at 600°C with over 500 h of durable operation ...
Xueyu Hu +15 more
wiley +1 more source
Theoretical Investigation on Feedback Control of Hybrid Rocket Engines
Aerospace, 2019 Despite the fact that hybrid propulsion offers significant benefits, it still suffers from some limitations such as the natural oxidizer to fuel ratio shift which induces variations of the engines’ performances while operating.
Jérôme Messineo, Toru Shimada
doaj +1 more source