Results 211 to 220 of about 22,691 (291)

Kinetic Investigation of Propylene Oxide Ring‐Opening Polymerization in a Multiphase Semibatch Reactor

open access: yesHelvetica Chimica Acta, EarlyView.
A semi‐batch kinetic model for propylene oxide ring‐opening polymerization reveals that polymerization is governed by mass transfer at the catalyst–liquid interface rather than gas–liquid transport. ABSTRACT The multiphasic semi‐batch ring‐opening polymerization of propylene oxide was investigated with respect to mass‐transfer limitations at the solid ...
Tabea A. Thiel   +4 more
wiley   +1 more source

Are West African Heat‐Lows Analogous to Dry Tropical Cyclones?

open access: yesInternational Journal of Climatology, EarlyView.
Heat‐lows qualitatively resemble dry tropical cyclones (TCs), though their underlying physics has yet to be compared. In this study, we show that West African transient heat‐low climatology correlates well with TC potential intensity generalised over land.
Aaron Kruskie   +2 more
wiley   +1 more source

In Situ Acoustic Monitoring of Focused Femtosecond Pulse Duration in Air

open access: yesLaser &Photonics Reviews, EarlyView.
Air‐breakdown acoustics at the laser focus is used to determine femtosecond pulse duration with a simple USB microphone. By chirp‐tuning and compressing 1030 nm pulses from 241 to 50 fs, the acoustic amplitude scales inversely proportional to the square root of the pulse duration, enabling in situ readout over 50 fs–5 ps—crucial for precise pulse ...
Indrė Meškėlaitė   +9 more
wiley   +1 more source

Synergistic MOF-based composite enabling significant solar-to-water generation enhancement in climate-resilient AWH. [PDF]

open access: yesNat Commun
Shao Z   +11 more
europepmc   +1 more source

Alloy Solutions for Ammonia Cracking: A Review

open access: yesMaterials and Corrosion, EarlyView.
This work provides a literature overview of the nitriding and degradation of structural materials under ammonia cracking conditions and explains the known mechanisms and the gaps, where research is required. ABSTRACT Hydrogen is a key factor in energy storage and transportation, which will inevitably lead to a substantial increase in demand.
Mathias Christian Galetz   +3 more
wiley   +1 more source

Role of High Fidelity Vs. Low Fidelity Experimental Data in Machine Learning Model Performance for Predicting Polymer Solubility

open access: yesMacromolecular Rapid Communications, EarlyView.
The performance of machine learning models for classifying polymer solubility improves when a high‐fidelity experimental dataset is used compared to a low‐fidelity experimental dataset. This has important implications for justifying the value of spending additional time and resources preparing detailed experimental datasets.
Mona Amrihesari   +3 more
wiley   +1 more source

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