Results 71 to 80 of about 888,402 (309)

Emergent Spinning and Orbital Motion in Clustered Wind‐Assisted Flyers

Advanced Science, EarlyView.
Inspired by natural snowflake geometries, paper‐cut flyers exhibit geometry‐defined spinning and orbital motions during cluster formation in a wind tunnel. Collective flights of multiple paperflakes reveal dynamic clustering, fragmentation, and continuously evolving spin behaviors.
Bingnan Zhou, Rahul Chand, Fahad Ahmed Korai, Jianfeng Yang, Valtteri Savonen, Fan Liu, Qi Yang, Hao Zeng   +7 more
wiley   +1 more source

Turbulence in the interstellar medium [PDF]

, 2014
Turbulence is ubiquitous in the insterstellar medium and plays a major role in several processes such as the formation of dense structures and stars, the stability of molecular clouds, the amplification of magnetic fields, and the re-acceleration and ...
Chian, A. C. -L., Chian, A. C.-L., G. Kowal, Falgarone, E., E. Falgarone, Falceta-Goncalves, D., Kowal, G., Chian, A., A. C.-L. Chian, D. Falceta-Gonçalves   +9 more
core   +2 more sources

From Flow to Function: Using Different Static Mixers to Fabricate Microarchitected Materials Via Chaotic Printing

Advanced Science, EarlyView.
Complex microarchitectures emerge from simple flow‐driven transformations as static mixers iteratively reorient and split material domains. Coupled with diverse deposition strategies, chaotic printing provides an accessible platform for fabricating architected materials that support biologically and chemically relevant processes. ABSTRACT Nature builds
Edna Johana Bolívar‐Monsalve, Carlos Fernando Ceballos‐González, Diego Alonso Quevedo‐Moreno, Irving Isaí Rendón‐Moreno, Ariel Cantoral‐Sánchez, Héctor Ambriz‐González, Mario Moisés Alvarez, Grissel Trujillo‐de Santiago   +7 more
wiley   +1 more source

The particle dry deposition component of total deposition from air quality models: right, wrong or uncertain?

Tellus: Series B, Chemical and Physical Meteorology, 2019
Dry deposition is an important loss process for atmospheric particles and can be a significant part of total deposition estimates calculated for critical loads analyses. However, algorithms used in large-scale air quality and atmospheric chemistry models
Rick D. Saylor, Barry D. Baker, Pius Lee, Daniel Tong, Li Pan, Bruce B. Hicks   +5 more
doaj   +1 more source

High-resolution large-eddy simulations of stably stratified flows: application to subkilometer-scale turbulence in the upper troposphere–lower stratosphere [PDF]

Atmospheric Chemistry and Physics, 2014
Large-eddy simulations of stably stratified flows are carried out and analyzed using the mesoscale atmospheric model Méso-NH for applications to kilometer- and subkilometer-scale turbulence in the in the upper troposphere–lower stratosphere.
R. Paoli, O. Thouron, J. Escobar, J. Picot, D. Cariolle   +4 more
doaj   +1 more source

Nanometer Layer Coating to Lactose Particles for Optimization of Dexamethasone Pulmonary Delivery

Advanced Science, EarlyView.
Nanometer layer coating (NLC) was investigated and its mechanism illustrated by advanced characterization techniques. The effects and application for the inhalation of dexamethasone (DEX) were demonstrated through in vitro and in vivo evaluation. This approach increased DEX bioavailability and enabled the dose to be reduced to 1/30 of the intravenous ...
Qin Nie, Jiahe Liu, Xiangyu Zhao, Siying Yang, Han Sun, Bingqian Jia, Xiaohong Ren, Xintao Chen, Lixin Sun, Li Wu, Caifen Wang, Jiwen Zhang   +11 more
wiley   +1 more source

The Impact of Atmospheric Turbulence on Terahertz Communication

IEEE Access, 2019
The application prospect of terahertz (THz) has been vastly enriched because it has the advantages of good penetrating power, high security, accurate directionality, and high bandwidth.
Lei Cang, Heng-Kai Zhao, Guo-Xin Zheng
doaj   +1 more source

Neuromorphic Optical Tracking and Imaging of Randomly Moving Targets Through Dynamic Dense Scattering Media

Advanced Science, EarlyView.
Vision begins not with images but with change: the retina fires only when something moves, handing the brain a stream of spikes. A neuromorphic imaging system adopts the same strategy—an event sensor that sees like the retina, a spiking network that thinks like the brain—to track and reconstruct fully randomly moving targets through tissue (phantom ...
Ning Zhang, Arto Nurmikko
wiley   +1 more source

Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems

Advanced Electronic Materials, EarlyView.
Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang, Weipeng Wang, Xuan Cong, Shiyu Wang, Gao Li, Sen Gong, Lin Huang, Hongxin Zeng, Yaxin Zhang, Ziqiang Yang   +9 more
wiley   +1 more source

The New Purity and Capacity Models for the OAM-mmWave Communication Systems Under Atmospheric Turbulence

IEEE Access, 2019
The orbital angular momentum (OAM) wireless communication technology is widely studied in recent literatures. But the atmospheric turbulence is rarely considered in analyzing the capacity of OAM-based millimeter wave (OAM-mmWave) communication systems ...
Hanqiong Lou, Xiaohu Ge, Qiang Li
doaj   +1 more source