Results 181 to 190 of about 7,214 (264)

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

Polymer 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, Sanjib K. Patra, Narayan C. Pradhan   +2 more
wiley   +1 more source

Practical in-syringe mixing method for uniform particle delivery during embolization procedures. [PDF]

Sci Rep
Ng DK, Drangova M, Holdsworth DW.
europepmc   +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

Psychology 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, Obioha C. Ukoumunne, Darren Moore, Jo Thompson Coon, Kirsty Cordwell, Abigail Russell   +5 more
wiley   +1 more source

Demulsifier Performance in Bitumen Froth Treatment: Impact of Mixing and Froth Quality on Dewatering Rate. [PDF]

ACS Omega
Xu R, Arora N, Saraka C, Machado MB, Kresta SM.   +4 more
europepmc   +1 more source

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

Propellants, 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, R. Hazael, R. Critchley, L. Humphreys   +3 more
wiley   +1 more source

Scalable, High-Density Expansion of Human Mesenchymal Stem Cells on Microcarriers Using the Bach Impeller in Stirred-Tank Reactors. [PDF]

Biotechnol Bioeng
Wyrobnik TA, Miranda L, Lam A, Oh S, Ducci A, Micheletti M.   +5 more
europepmc   +1 more source

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

Quarterly 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, A. Carrassi, J. Brajard, L. Bertino, M. Broccoli, D. Iovino, T.S. Finn, M. Bocquet   +7 more
wiley   +1 more source

Influence of the Inducer on the Performance of a Miniature High-Speed Centrifugal Pump. [PDF]

Micromachines (Basel)
Hou Y, Zeng X, Wang Y.
europepmc   +1 more source

Reliable Intelligent Diagnostics With Uncertainty Quantification for Mechanical System Condition Assessment

Quality and Reliability Engineering International, EarlyView.
ABSTRACT Health condition assessment of mechanical systems is essential to ensure their safe and reliable operation. Although AI‐driven diagnostic techniques have advanced significantly with the development of deep learning, the reliability of such techniques is often compromised due to the lack of uncertainty quantification (UQ)—particularly the ...
Guangjun Jiang, Haotian Ouyang, Zifei Xu
wiley   +1 more source

Influences of micro ramp vortex generators on the performance of flush waterjet propulsor. [PDF]

Sci Rep
Chen L, Ma X, Dai R.
europepmc   +1 more source