Results 201 to 210 of about 2,366 (263)

Pressure‐Decay Kinetic Modeling of Homogeneous Ethylene Polymerization with Et(Ind)2ZrCl2/TIBA‐Borate Catalyst System in a Batch Reactor

open access: yesPolymer Engineering &Science, EarlyView.
A kinetic model comprising both propagation and deactivation functions was developed for metallocene‐catalyzed ethylene polymerization in a batch reactor. The model predicted polymer yields very close to the experimental ones. The polymer molecular weight increased with ethylene pressure and decreased with temperature.
Narendra Singh Choudhary   +2 more
wiley   +1 more source

Reliability, Validity, and Acceptability of the Scope Classroom Observation Code (SCOC) to Identify Attention Deficit Hyperactivity Disorder (ADHD)‐Related Behaviours in UK Primary Schools

open access: yesPsychology in the Schools, EarlyView.
ABSTRACT ADHD is a prevalent disorder that impacts academic and social functioning in childhood. Teachers often struggle to identify ADHD. This study evaluated the Scope Classroom Observation Checklist's (SCOC) reliability, validity, and acceptability as a potential screening measure for school staff to identify ADHD characteristics.
Charlotte Rose Kelman   +5 more
wiley   +1 more source

Direct Measurement of Explosive Impulse From Contact to the Ultra‐Near Field

open access: yesPropellants, Explosives, Pyrotechnics, EarlyView.
ABSTRACT Measurement of impulse from explosive charges in contact and ultra‐near‐field regimes remains poorly characterised due to the short duration of loading, high strain rates, and the difficulty of obtaining direct momentum‐based measurements.
R. Alford   +3 more
wiley   +1 more source

Hybrid physics–data‐driven modeling for sea ice thermodynamics and transfer learning

open access: yesQuarterly Journal of the Royal Meteorological Society, EarlyView.
Icepack–NN, a machine‐learning‐based hybrid version of the sea‐ice column model Icepack, is developed to correct state‐dependent forecast errors arising from misspecified snow thermodynamics, using neural networks applied online within the physical model.
G. De Cillis   +7 more
wiley   +1 more source

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