Results 91 to 100 of about 710,395 (248)

Characterization of the Planetary Boundary Layer Height in Huelva (Spain) During an Episode of High NO₂ Pollutant Concentrations

Earth
This study investigates the estimation of the boundary layer height (PBLH) in Huelva, Spain, in November 2023, using different methods: Richardson number, humidity gradient and refractivity gradient. From the virtual potential profiles of temperature and
Ainhoa Comas Muguruza, Raúl Arasa Agudo, Mireia Udina   +2 more
doaj   +1 more source

Ten years analysis of Tropospheric refractivity variations [PDF]

, 2004
The refractivity variations of the troposphere are responsible for various effects on radio wave propagation, such as refraction, bending, radio-station interference, etc.
Xenos, T. D., T. D. Xenos, S. A. Isaakidis, Isaakidis, S. A., null T. D. Xenos, null S. A. Isaakidis   +5 more
core   +1 more source

Chiral Phonon–Driven Ultrafast Spin Currents in a Non‐Magnetic Ferroelectric

Advanced Materials, EarlyView.
Broadband terahertz emission spectroscopy shows signatures of ultrafast spin‐current generation in non‐magnetic ferroelectric β$\beta$’‐In2Se3${\rm In}_2{\rm Se}_3$. Reversal of the emitted field upon sample inversion and substitution of Pt with W indicates spin‐Hall‐mediated charge conversion, while polarization‐resolved measurements reveal ...
Thomas B. Gill, Ahmet Yagmur, Matthew Rogers, Luke Benson, Nathan Fox, Ben Muggleton, Zabeada Aslam, Conor McCluskey, Phoenix Robinson, Oscar Cespedes, Bryan Hickey, Timothy Moorsom, Marty Gregg, Edmund H. Linfield, Sukhdeep Dhillon, Satoshi Sasaki, Joshua R. Freeman   +16 more
wiley   +1 more source

GNSS-RO residual ionospheric error (RIE): a new method and assessment [PDF]

Atmospheric Measurement Techniques
Global Navigation Satellite System (GNSS) radio occultation (RO) observations play an increasingly important role in monitoring climate changes and numerical weather forecasts in the upper troposphere and stratosphere.
D. L. Wu, V. A. Yudin, K.-M. Kim, M. Chattopadhyay, L. Coy, R. S. Lieberman, C. C. J. H. Salinas, J. N. Lee, J. Gong, G. Liu   +9 more
doaj   +1 more source

Monolithically 3D‐Printed Spectral‐Spatial Meta‐Authenticators

Advanced Materials, EarlyView.
A single height map printed in a low‐index resin by two‐photon lithography encodes multiple visible wavelengths in one metasurface without any polarization optics. A fabrication‐aware optimization folds the printable height levels into the design, so the device is printed as optimized.
Cherry Park, Shiqi Hu, Youngsun Jeon, Junsuk Rho   +3 more
wiley   +1 more source

Programmable Microgel Degradation in Dynamic Granular Hydrogels Guides Extracellular Matrix Assembly During Tissue Repair

Advanced Materials, EarlyView.
This study reports on the chemical modification of hyaluronic acid to create hydrogels with hydrolytic degradability ranging from 2–28 days. Granular hydrogels that undergo timed degradation to increase porosity enhance cell invasion and provisional ECM remodeling in a muscle injury model, leading to reduced fibrosis and improved regeneration ...
Zhiyuan Chen, Tuba Marjan, Xinyue Lu, Nicole E. Mertens, Keira Vesy, Dean E. Stornello, James F. Markworth, Taimoor H. Qazi   +7 more
wiley   +1 more source

Millifluidic Synthesis of Core–Shell Resonators For Tunable Sonic BandGaps in Acoustic Metamaterials

Advanced Materials Interfaces, EarlyView.
Millimeter‐scale core–shell acoustic resonators are fabricated by a gravity‐assisted dripping approach and incorporated into epoxy composites at controlled volume fractions. The resulting alumina–core resonator composites show tunable low‐frequency acoustic attenuation, demonstrating a scalable route for integrating locally resonant metamaterial units ...
Colton Steiner, Xiaohui Shen, Bianka Pajo, Chin‐Teh Sun, Jeffrey P. Youngblood, Carlos Martinez   +5 more
wiley   +1 more source

Statistical Analysis of Atmospheric Delay Gradient and Rainfall Prediction in a Tropical Region

Remote Sensing
In recent years, precipitable water vapor has emerged as a key atmospheric parameter in weather prediction research. However, relying on only one parameter does not always accurately predict rainfall, as other atmospheric parameters also contribute to ...
Anik Naha Biswas, Yee Hui Lee, Wei Tao Yeo, Wai Chong Low, Ding Yu Heh, Shilpa Manandhar   +5 more
doaj   +1 more source

Studies of Super-Refractivity and Ducting of Radiowaves in Nigeria

, 2004
Studies of tropospheric refraction of long and short wavelength radio signals have been carried out in the coastal and savannah areas of Nigeria using meteorological data collected by radiosondes in Lagos (30 45' E, 60 28' N) and Kano (80 30' E, 120 2'N).
Falodun, E. S., Kolawole, L. B.
core   +1 more source

Antibody‐Precomplexed Hemagglutinin Constructs Multivalently Bind Sialylated Glycan Receptors with Variable Valencies

Advanced Materials Interfaces, EarlyView.
Hemagglutinin precomplexation with antibodies (Abs) results in broad valency distributions, though it increases the total avidity from mM to nM to high nM. The valency distribution and the orientation of multivalent HA‐Ab complexes determine the extent of binding to different types of assays, whether the receptors are displayed in 2D or 3D.
Daniel Y. E. L. Tambuwun, María Ríos Carrasco, Elif Uslu, Geert‐Jan P. H. Boons, Nadia J. Mokiem, Albert J. R. Heck, Victor C. Yin, Robert P. de Vries, Jurriaan Huskens   +8 more
wiley   +1 more source