Results 41 to 50 of about 5,450,356 (281)

Determination of Intervening Pillar Thickness Based on the Cusp Catastrophe Model

Advances in Civil Engineering, 2019
For the stability of the intervening pillar of the sublevel drilling open-stope subsequent filling mining method, the multifactor stability mechanical model of the intervening pillar under two different constraint conditions (Model 1 and Model 2) was ...
Shaowei Ma, Zhouquan Luo, Jianhua Hu, Qifan Ren, Yaguang Qin, Lei Wen   +5 more
doaj   +1 more source

Extraction of Catastrophe Boundary and Evolution of Expressway Traffic Flow State

Applied Sciences, 2022
As the main road type in an urban traffic system, the increasingly severe congestion of the expressway restricts social and economic development. It is essential to explore the evolution law of congestion and dissipation to ensure the efficient operation
Dayi Qu, Haomin Liu, Hui Song, Yiming Meng   +3 more
doaj   +1 more source

On the formation of the high-altitude stagnant cusp : Cluster observations [PDF]

, 2005
On 16 March 2002, Cluster moved from nightside to dayside, across the high-altitude northern cusp during an extended period of relatively steady positive IMF BY and BZ. Combined Cluster and SuperDARN data imply the existence of two reconnection sites: in
Rème, H., Davies, J. A., Balogh, A., Fazakerley, A. N., Klecker, B., Milan, S. E., Bogdanova, Y. V., Wild, J. A., Frey, H. U., Marchaudon, A., Dunlop, M. W., Owen, C. J.   +11 more
core   +5 more sources

Nonlinear Analysis on Traffic Flow Based on Catastrophe and Chaos Theory

Discrete Dynamics in Nature and Society, 2014
We applied catastrophe and chaos theory to analyze the traffic nonlinear characteristics of expressway condition. Catastrophe theory was generally used to explore the mathematical relationships among the traffic data collected from highway conditions ...
Jian Gu, Shuyan Chen
doaj   +1 more source

Engineering the Assembly Freedom of Donor–Acceptor Type Self‐Assembled Monolayers Toward Efficient and Stable Flexible Perovskite Photovoltaics

Advanced Materials, EarlyView.
Assembly freedom engineering breaks the vertical alignment constraint of donor–acceptor self‐assembled monolayers, tuning their assembly freedom to achieve quasi‐random molecular orientation. This strategy simultaneously boosts interfacial charge transport and mechanical robustness, enabling high‐efficiency and mechanically stable flexible perovskite ...
Biao Zhou, Guosen Zhang, Hao Wang, Juntao Zhao, Ruijia Zhang, Hong Zhang, Mingwei An, Yue Wang, Yang Wang, Wallace C. H. Choy   +9 more
wiley   +1 more source

Flax Composites With Improved Interfacial Strength Through Microbially Induced Mineral Precipitation

Advanced Materials, EarlyView.
A bio‐inspired biomineralization strategy introduces an additional hierarchy to flax fiber composites. By controlling microbe‐mediated mineral particle deposition through tuned salt concentrations, stress transfer within the natural fiber composite is enhanced.
Deniz Sayinbas, Ingo Nettersheim, Jeong‐Joo Oh, Marie‐Eve Aubin‐Tam, Julie Teuwen, Kunal Masania   +5 more
wiley   +1 more source

Catastrophic behavior of aphid population dynamics: An analysis of swallowtail model [PDF]

Computational Ecology and Software, 2014
Catastrophe phenomena are frequent in insect ecology, especially in aphid populations. Complexity of this phenomenon urges different modeling frameworks other than traditional methodologies to understand the trajectories of their behavior.
Mkdk Piyaratne, Huiyan Zhao, Zuqing Hu, et al.   +2 more
doaj  

A Thermoreversible Gelation Pathway to Plant Cuticle‐Inspired Biopolymer Aerogel Monoliths Based on Network‐Spherulitic Crystal Assemblies

Advanced Materials, EarlyView.
To address functionality limitations in plant‐based and industrially compostable polymer aerogels, this work introduces bio‐inspired aerogels with broadened functionality. Inspired by functional plant tissues, lightweight biopolymer aerogels based on exclusively stereocomplex crystals are fabricated, featuring hierarchically macro‐/meso‐porous ...
Anthony V. Tuccitto, Zeineb Ben Rejeb, Rafaela Aguiar, Nello D. Sansone, Sumaiya Farzana, Isaac Ali, Jun Uk Lee, Daniel J. Davidson, Ailsa K. Edward, Chul B. Park, Patrick C. Lee   +10 more
wiley   +1 more source

Cluster observations of the midaltitude cusp under strong northward interplanetary magnetic field [PDF]

, 2008
We report on a multispacecraft cusp observation lasting more than 100 min. We determine the cusp boundary motion and reveal the effect on the cusp size of the interplanetary magnetic field (IMF) changing from southward to northward.
Reme, Henri, Owen, C. J. (Christopher J.), Rème, H., Foullon, Claire, Owen, Christopher J., Bogdanova YV, Owen CJ, Foullon C, Hu, R. (Ren-Yu), Fazakerley, Andrew, Rème H, Fazakerley, A. N., Bogdanova, Y. V., Foullon, C. (Claire), Hu R, Fazakerley AN, Bogdanova, Yulia V., Hu, Renyu   +17 more
core   +1 more source

Dental Microwear Texture Analysis on Radular Teeth

Advanced Materials Interfaces, EarlyView.
3D microwear textures reveal how gastropod radular teeth respond to controlled abrasive contact. Distinct surface signatures distinguish regular abrasion from fracture‐dominated material removal, showing how mineralized coatings, fibrous cores, and substrate properties jointly shape wear and failure in a biological scraping interface.
Wencke Krings, Stanislav N. Gorb, Ellen Schulz‐Kornas   +2 more
wiley   +1 more source