Results 81 to 90 of about 1,689,762 (301)

INSTABILIDADE LINEAR DE CISALHAMENTO VERTICAL EM JATOS GEOFÍSICOS MERIDIONAIS

Brazilian Journal of Geophysics, 2003
O estudo da instabilidade linear de cisalhamento vertical (ou baroclínica) de perfis de jato de direção meridional (norte-sul) é conduzido através de um modelo hidrodinâmico unidimensional, baseado no princípio de conservação de vorticidade ...
Ilson Carlos Almeida da Silveira, Leandro Calado, Cayo Prado Fernandes Francisco   +2 more
doaj   +1 more source

Biodegradable 3D‐Printable and Coatable Antifouling Composites for Marine Applications

Advanced Functional Materials, EarlyView.
Marine biofouling damages submerged surfaces and raises greenhouse gas emissions. Biodegradable antifouling biocomposites were developed by hot‐mixing beeswax, Tween 80, and calcium stearate or stearic acid. Adjusting the component ratio enables processing via hot‐pressing, 3D‐printing, or dip‐coating.
Gabriele Corigliano, Lorenzo Ravelli, Martina Nardi, Ruowen Tu, Elena Bellini, Valerio Isa, Carlo Filippeschi, Roberta Finazzi, Luca Ceseracciu, Niloofar Paknezhad, Vincenzo Scribano, Paolo Galli, Silvia Lavorano, Simone Montano, Barbara Mazzolai, Marco Contardi, Pietro Cataldi, Athanassia Athanassiou   +17 more
wiley   +1 more source

Fast ion instability at the Cornell Electron Storage Ring Test Accelerator

Physical Review Special Topics. Accelerators and Beams, 2015
Fast ion instability can lead to deterioration of an electron beam (increasing emittance and instability of a train of bunches) in storage rings and linacs. We study this at the Cornell electron storage ring test accelerator using a 2.1 GeV low emittance
A. Chatterjee, K. Blaser, W. Hartung, D. Rubin, S. T. Wang   +4 more
doaj   +1 more source

Instability characteristics of the cracked roof rock beam under shallow mining conditions

International Journal of Mining Science and Technology, 2018
To establish the movement relationship for the roof breaking under shallow mining conditions, the mechanical model of the roof rock beam was built, then the structure instability process of the roof rock beam was analyzed.
Yanhai Zhao, Shuren Wang, Zhengsheng Zou, Linlin Ge, Fang Cui   +4 more
doaj   +1 more source

Instability of co-rotating vertical vortices in a stratified fluid

, 2006
International audienceWe show numerically, theoretically and experimentally that two co-rotating vertical vortices in a stably stratified fluid are subjected to a new three-dimensional similar to the zigzag instability observed on counter-rotating ...
Billant, Paul, Chomaz, Jean-Marc, Otheguy, Pantxika, Jean-Marc Chomaz, Pantxika Otheguy, Paul Billant   +5 more
core   +1 more source

Ligand Assisted Epitaxial Growth of CsPbBr3 Microcrystal Resonators With Record ‐Low Lasing Thresholds

Advanced Functional Materials, EarlyView.
Solution‐based ligand‐assisted epitaxial growth (LAEG) yields high‐quality CsPbBr3 microcrystals on different substrates with superior morphology, passivated surfaces, and high photoluminescence quantum yield. These robust micro‐resonators achieve record‐low room‐temperature lasing thresholds of 7.2 kW·cm−2 and maintain operational stability up to 90 ...
Shuyu Zhou, Viktor Rehm, Zijian Peng, Tomáš Hrbek, Anastasia Barabash, Christoph J. Brabec, Berke Özyalin, Yufei Han, Johannes Böhmer, Johannes Will, Erdmann Spiecker, Klaus Götz, Tobias Unruh, Jędrzej Korczak, Tomasz Story, Felix Hilpert, Olaf Brummel, Jörg Libuda, Iva Matolínová, Wolfgang Heiss   +19 more
wiley   +1 more source

Vertical-supercooling-controlled interfacial instability for a spreading liquid film [PDF]

Thermal effect is essential to regulate the interfacial instabilities for diverse technology applications. Here we report the fingering instability at the propagation front for a spreading liquid film subjected to the supercooling at the vertical ...
Wang, Yingrui, Deng, Daosheng, Hu, Man, Chen, Li, Huo, Peng, Gu, Xi, Wang, Feng, Li, Yuqi   +7 more
core   +1 more source

Unified Pressure and Field Response Across Distinct Charge‐Order Regimes in Ti‐Doped CsV3Sb5

Advanced Functional Materials, EarlyView.
We microscopically investigate the interplay between charge order and superconductivity in a kagome superconductor across regimes of long‐ and short‐range charge order. Hydrostatic‐pressure and magnetic‐field μSR$\mu{\rm SR}$ measurements reveal remarkably similar superconducting and normal‐state time‐reversal‐symmetry‐breaking responses in both ...
P. Kral, S.S. Islam, Andrea N. Capa Salinas, J.N. Graham, O. Gerguri, A. Doll, J.A. Krieger, T.J. Hicken, G. Simutis, H. Luetkens, R. Khasanov, S.D. Wilson, Z. Guguchia   +12 more
wiley   +1 more source

IS INCREASED INSTABILITY IN CEREAL PRODUCTION IN ETHIOPIA CAUSED BY POLICY CHANGES? [PDF]

In Ethiopia, growth in cereal production is accompanied by a more than proportionate increase in the standard deviation of production. This study applies descriptive and variance decomposition procedures to determine the sources of increased instability ...
van Schalkwyk, Herman D., Alemu, Zerihun Gudeta, Oosthuizen, Klopper   +2 more
core  

Instability of Vertical Throughflows in Porous Media under the Action of a Magnetic Field

, 2019
The instability of a vertical fluid motion (throughflow) in a binary mixture saturating a horizontal porous layer, uniformly heated from below, uniformly salted from below by one salt and permeated by an imposed uniform magnetic field H, normal to the ...
Florinda Capone, Roberta De Luca, Maurizio Gentile   +2 more
core   +1 more source