Results 111 to 120 of about 121,329 (305)

Rough-to-smooth transition of an equilibrium neutral constant stress layer [PDF]

Purpose of research on rough-to-smooth transition of an equilibrium neutral constant stress layer is to develop a model for low-level atmospheric flow over terrains of abruptly changing roughness, such as those occurring near the windward end of a ...
Fichtl, G. H., Logan, E., Jr.
core   +1 more source

Radial evolution of cross helicity at low and high latitudes in the solar wind [PDF]

, 2005
We employ a turbulence transport theory to the radial evolution of the solar wind at both low and high latitudes. The theory includes cross helicity, magnetohydrodynamic (MHD) turbulence, and driving by shear and pickup ions. The radial decrease of cross
Bavassano, B., Bieber, J.W., Breech, Ben, Matthaeus, William H., Minnie, J., Oughton, Sean, Parhi, S.   +6 more
core   +1 more source

Toughening β‐Ga2O3 via Mechanically Seeded Dislocations

Advanced Functional Materials, EarlyView.
β‐Ga2O3 is promising for next‐generation semiconductors but its brittleness limits flexible and high‐precision applications. Here, mechanically seeded dislocations introduced by surface deformation improved damage tolerance in (001) β‐Ga2O3. Nanoindentation and characterization show dislocations suppress cleavage cracks by enabling stable plastic ...
Zanlin Cheng, Jiawen Zhang, Peng Gao, Guosong Zeng, Xufei Fang, Wenjun Lu   +5 more
wiley   +1 more source

Bio‐Orthogonally Crosslinked Supramolecular Polymer Bottlebrush Hydrogels for Long‐Term 3D Cell Culture

Advanced Functional Materials, EarlyView.
Fibrous benzenetrispeptide (BTP) hydrogels, fabricated via strain‐promoted azide‐alkyne cycloaddition (SPAAC) crosslinking, form robust, bioinert networks. These hydrogels can support 3D cell culture, where cell viability and colony growth depend on the fiber content.
Ceren C. Pihlamagi, David Pretzel, Peer Nölte, Kourosh Rezaei, Ulrich S. Schubert, Johannes C. Brendel   +5 more
wiley   +1 more source

Low-Level Wind Shear Characteristics in the Qinghai-Tibet Plateau by Long-Term Wind Lidar Observations and the Improved Algorithm

Atmosphere
The complex terrain of the Qinghai–Tibetan Plateau (QTP) makes low-level wind shear (LLWS) detection challenging. Using May–September 2023 high-resolution Doppler Wind Lidar (DWL) observations, this study analyzed the spatiotemporal characteristics of ...
Huiyu Ding, Dandan Zhao, Lian Duan, Junjie Wu, Wenjun Sang, Guangjing Liu, Tianyi Wang, Shaoqing Zhang, Yaohui Li   +8 more
doaj   +1 more source

Significant events in low-level flow conditions hazardous to aircraft [PDF]

Atmospheric parameters recorded during high surface winds are analyzed to determine magnitude, frequency, duration, and simultaneity of occurrence of low level flow conditions known to be hazardous to the ascent and descent of conventional aircraft and ...
Alexander, M. B., Camp, D. W.
core   +1 more source

Changes in wave climate over the northwest European shelf seas during the last 12,000 years

, 2009
Because of the depth attenuation of wave orbital velocity, wave-induced bed shear stress is much more sensitive to changes in total water depth than tidal-induced bed shear stress.
Austin, Barrow, Beets, Belderson, Berger, Booij, Boulton, Böse, Cameron, Carr, Carter, Draper, Elliott, G. R. Bigg, Hinton, Hinton, Hurrell, J. D. Scourse, K. Uehara, Komen, Lambeck, Lambeck, Lambeck, Lambeck, Milne, Mitrovica, Neill, Neill, Newell, Ogston, Palutikof, Peltier, Peltier, Pingree, Renssen, Reynaud, Rippeth, Ris, S. P. Neill, Scourse, Simmons, Uehara, van der Molen, van der Molen, van der Molen, Vincent   +45 more
core   +1 more source

Ceramic Particle‐Reinforced Medium‐Entropy Alloys With Outstanding Mechanical Properties Prepared by Novel Micro‐LPBF

Advanced Functional Materials, EarlyView.
An innovative medium entropy alloy (MEA) composite material was fabricated via micro laser powder bed fusion (μ‐LPBF) with appropriate nano‐ceramic particles doping and exhibited markedly improved overall performance, including synergistically enhanced strength and ductility, increased hardness and compressive strength, improved wear resistance and ...
Zhonglin Shen, Mingwang Fu
wiley   +1 more source

Low-level turbulence risk assessment and visualization using temporal rate of change of headwind of an aircraft

Journal of Big Data
In this study, we focused on the temporal rate of change of headwind, which is one of the recorded parameters in the aircraft’s in-flight quick access recorder data.
Koji Ito, Haruka Ohba, Shinya Mizuno
doaj   +1 more source

On the theory of SODAR measurement techniques (final reporting on WP1, EU WISE project NNE5-2001-297) [PDF]

, 2003
The need for alternative means to measure the wind speed for wind energy purposes has increased with the increase of the size of wind turbines. The cost and the technical difficulties for performing wind speed measurements has also increased with the ...
Antoniou, I, Bradley, SG, Emeis, S, Jorgensen, HE, Ormel, F, von Hünerbein, S, Warmbier, G   +6 more
core   +1 more source