Results 41 to 50 of about 738,621 (291)
Scientific ReportsThis study proposes BAGWO, a novel hybrid optimization algorithm that integrates the Beetle Antennae Search algorithm (BAS) and the Grey Wolf Optimizer (GWO) to leverage their complementary strengths while enhancing their original strategies.
Fan Zhang +6 more
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MATEC Web of Conferences, 2018 The interrelations between the size of the gas turbine engine (GTE) and the size and workflow of the combustion chamber (CC) were considered. On the base of analysis of workflow organization the design of CC with toroidal recirculation mixing zone was ...
Yurievich Orlov Michael +4 more
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Environmental particle rebound/deposition modeling in engine hot sections
Frontiers in Mechanical Engineering, 2023 The aircraft engine hot section is most vulnerable and failure prone to environmental particle ingestion, which, particularly for helicopters, can cause detrimental effects ranging from reduced performance to complete engine failure.
Lei-Yong Jiang +3 more
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From mice to humans—divergent strategies for intestinal homeostasis and regeneration
FEBS Letters, EarlyView.Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa +2 more
wiley +1 more source
Shock and VibrationIt is crucial to comprehend the heat soak phenomenon, which may result in a significant temperature increase after the shutdown followed by a gradual decrease. This could bring potential risks for the engine including oil coking.
Xuanming Ge +4 more
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Improvement of Stability of a High‑Loaded Axial Flow Compressor by a Combined Flow Control Method
Transactions of Nanjing University of Aeronautics and AstronauticsThis study investigates a high‑loaded axial compressor in which flow instabilities in the rotor and the stator occur almost concurrently. Under these conditions， conventional stability enhancement methods prove to be ineffective.
MENG Dejun, YIN Haibao, LIU Jie
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Valve-seat components in a diesel engine: a tribological approach to limit wear
Mechanics & Industry, 2021 Within diesel engines, the valve-seat contact is one of the few non-lubricated contacts which is subjected to significant degradation. This degradation is put in evidence by material removal at the intake valve.
Crozet Martial +4 more
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Reconstructing enzyme evolution by protein engineering
FEBS Letters, EarlyView.Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler +2 more
wiley +1 more source
MATEC Web of Conferences, 2015 Numerical simulation is the main method to solve turbulence problems. As one of the three methods which are commonly used in large-eddy simulation model (LES) is the most effective and promising research method. The basic idea of large-eddy simulation is
Xu Rang-Shu, Wang Kai, Xu Long, Yu Xin
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Effect of hydrogen direct injection timing on ammonia combustion in a marine engine: A numerical study [PDF]
E3S Web of ConferencesThe injection timing of hydrogen in an ammonia-hydrogen fueled marine engine significantly affects combustion performance and emissions. This study aims to identify the optimal hydrogen direct injection timing window.
Li Xiao +5 more
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