Results 41 to 50 of about 139,572 (294)

Combustion Dynamics of Swirling Flame at Thermochemical Conversion of Biomass

Chemical Engineering Transactions, 2015
Development of the swirling flame dynamics at thermo chemical conversion of biomass (wood pellets) has been investigated experimentally at a low swirl number of the swirling flame flow (S < 0.6), different rates of biomass thermal decomposition and ...
I. Barmina, A. Kolmickovs, R. Valdmanis, M. Zake   +3 more
doaj   +1 more source

Scaling, Propagation, and Kinetic Roughening of Flame Fronts in Random Media [PDF]

, 1995
We introduce a model of two coupled reaction-diffusion equations to describe the dynamics and propagation of flame fronts in random media. The model incorporates heat diffusion, its dissipation, and its production through coupling to the background ...
A. K. Kapila, A. P. Aldushin, B. Drossel, B. Grossmann, D. Stauffer, D. Stauffer, F. Family, G. Albinet, G. I. Sivashinsky, J. C. Roux, J. D. Murray, J. Krug, J. Zhang, K. R. Elder, L. D. Landau, Luc Piché, M. Kardar, M. L. Frankel, M. N. Chee, Martin Grant, Nikolas Provatas, P. Bak, P. Bak, R. B. Pandey, R. Kapral, R. Kapral, T. Ala-Nissila, Tapio Ala-Nissila   +27 more
core   +2 more sources

Modulating Two‐Photon Absorption in a Pyrene‐Based MOF Series: An In‐Depth Investigation of Structure–Property Relationships

Advanced Functional Materials, EarlyView.
This study investigates H4TBAPy‐based metal–organic frameworks (MOFs) ‐ NU‐1000, NU‐901, SrTBAPy, and BaTBAPy ‐ for multiphoton absorption (MPA) performance. It observes topology‐dependent variations in the 2PA cross‐section, with BaTBAPy exhibiting the highest activity.
Simon N. Deger, Helmy Pacheco Hernandez, Yang Cui, Hongxing Hao, Vanessa Ramm, David C. Mayer, Khai‐Nghi Truong, Roland A. Fischer, Jürgen Hauer, Mariana Kozlowska, Alexander Pöthig   +10 more
wiley   +1 more source

Propagation of the First Flames in Type Ia Supernovae [PDF]

, 2006
We consider the competition of the different physical processes that can affect the evolution of a flame bubble in a Type Ia supernovae -- burning, turbulence and buoyancy.
Bychkov V. V., Davies R. M., Harper J. F., L. J. Dursi, M. Zingale   +4 more
core   +4 more sources

Laser‐Induced Graphene from Waste Almond Shells

Advanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova, Anna Chiara Bressi, Marina Galliani, Attilio Marino, Gianni Ciofani, Eduardo Machado‐Charry, Hilda Gomez Bernal, Alessandra Francini, Luca Sebastiani, Francesco Greco   +9 more
wiley   +1 more source

Development and Application of an Optoelectronic Sensor for Flame Monitoring of a Copper Concentrate Flash Burner

Sensors
A flash smelting furnace operation is based on the exothermic reduction of copper concentrates in the combustion shaft, and these reactions occur at high temperatures (1250–1350 °C), where flame control is fundamental to optimizing copper reduction ...
Gonzalo Reyes, Walter Díaz, Carlos Toro, Eduardo Balladares, Sergio Torres, Roberto Parra, Jonathan Torres-Sanhueza, Maximiliano Roa, Carla Taramasco, Víctor Montenegro, Milen Kadiyski   +10 more
doaj   +1 more source

Magnetic Control of Chiral Hybridized Phonon Magnetic Moments in Ferrimagnets Fe2‐xZnxMo3O8

Advanced Functional Materials, EarlyView.
Helicity‐resolved magneto‐Raman spectroscopy reveals magnetic control of chiral phonon magnetic moments in polar ferrimagnet (ZnxFe2−xMo3O₈). Large spontaneous zero‐field phonon splittings, selective phonon–magnon coupling, and asymmetric Zeeman responses demonstrate that phonon chirality is governed by magnon‐phonon coupling and magnetization.
Youngsu Choi, Dirk Wulferding, Amit Pawbake, Clément Faugeras, Sivasakthi Kuppusamy, Raman Sankar, Gichan Son, Jeongwoo Kim, Kwang‐Yong Choi   +8 more
wiley   +1 more source

Experimental study of coupling characteristics between flame dynamics and CO emissions using wavelength modulation spectroscopy

Applications in Energy and Combustion Science
The coupled characteristics of flame dynamics and emissions in energy systems are critical for understanding combustion instability mechanisms and implementing effective emission control, necessitating high temporal-resolution optical diagnostic methods ...
Weitian Wang, Pengfei Fu, Lingyun Hou, Xing Chao, Yao Mi, Zhenhai Wang, Rémy Mével, Gaofeng Wang   +7 more
doaj   +1 more source

Nonlinear equation for curved stationary flames [PDF]

, 2001
A nonlinear equation describing curved stationary flames with arbitrary gas expansion $\theta = \rho_{{\rm fuel}}/\rho_{{\rm burnt}}$, subject to the Landau-Darrieus instability, is obtained in a closed form without an assumption of weak nonlinearity. It
Bychkov V. V., Frankel M. L., Joulin G., Kirill A. Kazakov, Landau L. D., Markstein G. H., Michael A. Liberman, Michelson D. M., Rahibe M., Rahibe M., Rahibe M., Sivashinsky G. I., Zel’dovich Ya. B., Zhdanov S. K.   +13 more
core   +2 more sources

From Single Atoms to Nanoparticles: Pathways Toward Efficient and Durable Pt/TiO2 Photocatalysts

Advanced Functional Materials, EarlyView.
Platinum single atoms on TiO2 nanosheets evolve into clusters and nanoparticles under ethanol photoreforming and thermal treatments. By controlling deposition and post‐treatments, particle size and location on specific facets are modulated. The study reveals how stability pathways determine efficiency, guiding the design of more durable photocatalysts.
Juan José Delgado, Enqi Bu, Yaning Han, Carlos López‐Cartes, Mónica Calatayud, Huiyan Pan, Xiaowei Chen   +6 more
wiley   +1 more source