Results 161 to 170 of about 1,303,815 (271)

First‐Principles Study of Novel A2CaTiH6 (A = Li, Na, K, Rb) Hydrides for Solid‐State Hydrogen Storage Applications

open access: yesEnergy Science &Engineering, EarlyView.
First‐principles investigation of A2CaTiH6 (A = Li, Na, K, Rb) hydrides reveals structural, electronic, mechanical, thermodynamic, and hydrogen storage properties. Negative formation energies confirm stability, while all compounds are metallic and mechanically stable. K2CaTiH6 and Rb2CaTiH6 are dynamically stable, with capacities of 2.28 wt.%–5.61 wt.%.
Nur Mohammad Riyad Kawsar   +5 more
wiley   +1 more source

The Feasibility Test of Electric Propulsion Systems: Case Study for a Light and Fixed‐Wing Aircraft

open access: yesEnergy Science &Engineering, EarlyView.
ABSTRACT This study investigates the feasibility and performance of a fully electric propulsion system (EPS) integrated into a light fixed‐wing aircraft. The system consists of a 65 kW‐class electric motor, a high‐efficiency inverter, and dual lithium‐ion battery packs with a total capacity of 27 kWh—collectively engineered to fulfill both power ...
Byeong Gyu Gang
wiley   +1 more source

Effect of Microchannel Geometry on Nanoparticle Deposition in Nanofluid Flow

open access: yesInternational Journal for Numerical Methods in Fluids, EarlyView.
This study numerically analyzed nanoparticle deposition in microchannels with varying geometries. Deposition per unit area decreases significantly with increasing bend angle (28.612 to 8.941 between 30° and 120°) and bend radius (11.922 to 4.769 between 0.2 and 0.4 mm). Acute bends and small radii enhance centrifugal forces and flow separation, leading
Meng Wang   +3 more
wiley   +1 more source

Kinetic Study on the Reaction of Phenylperoxy Radicals With Nitric Oxide

open access: yesInternational Journal of Chemical Kinetics, EarlyView.
ABSTRACT Cavity ring‐down spectroscopy (CRDS) and quantum cascade laser absorption spectroscopy (QCLAS), in conjunction with pulsed laser photolysis, were employed to investigate the reaction between phenylperoxy radicals (C6H5O2) and nitric oxide (NO) at a temperature of 296 ± 4 K. The experiment was carried out under N2 as bath gas.
Maya Matsushita   +2 more
wiley   +1 more source

Size Matters: Barrier Heights and Widths in the Kinetics Of Tautomerisation and Rotamerisation of Thiotropolone and Its Five‐ and Three‐Membered Cyclic Analogues

open access: yesInternational Journal of Chemical Kinetics, EarlyView.
ABSTRACT Recent experiments by Nunes et al. have demonstrated that unprecedented control of chemical reactions is possible by narrowband infrared vibrational photo‐excitation at low temperatures in inert matrices. The generated higher energy level conformers may then undergo rotamerisation and tautomerisation reactions which provide extremely useful ...
Judith Wurmel, John M. Simmie
wiley   +1 more source

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