Results 71 to 80 of about 15,655 (316)
Rain attenuation prediction model for terrestrial links incorporating wet antenna effects
IET Microwaves, Antennas & Propagation, 2023 Accurate prediction of rain attenuation is critical for the design of terrestrial line‐of‐sight link systems above 5 GHz, particularly for millimetre‐wave frequency.
Xin Zhang +6 more
doaj +1 more source
Radio wave propagation and parabolic equation modeling
, 2017 A thorough understanding of electromagnetic wave propagation is fundamental to the development of sophisticated communication and detection technologies.
Apaydin, Gokhan +3 more
core +1 more source
Advanced Functional Materials, EarlyView.InSb, a narrow‐bandgap semiconductor with high carrier mobility, is promising for thermoelectric energy conversion but suffers from high lattice thermal conductivity and strong bipolar conduction. Here, in situ interface engineering using Co2O3 nanoprecursors forms hierarchical CoSbx/In2O3/CoSb3 heterostructures that enhance phonon scattering and ...
Jiwu Xin +10 more
wiley +1 more source
Quiet time F2-layer disturbances: seasonal variations of the occurrence in the daytime sector [PDF]
Annales Geophysicae, 2009 Earlier revealed seasonal/latitudinal variations of the occurrence for positive and negative F2-layer Q-disturbances have been interpreted in the framework of the present-day concept of the thermosphere-ionosphere interaction. The basic process is the
A. V. Mikhailov +2 more
doaj +1 more source
A Non‐Reciprocal Architected Porous Medium
Advanced Functional Materials, EarlyView.ABSTRACT In several fluid flow, energy‐dumping, and energy‐harvesting applications, a dominant flow direction or dominant resistance direction is desirable. In this study, we propose a simple modular geometry that doubles flow resistance in one direction relative to the opposite direction, while maintaining laminar viscous flow.
Clément Vezies +2 more
wiley +1 more source
Relation of daily periods of vlf radiation with X-ray sources
E3S Web of Conferences, 2016 Spectral analysis of electromagnetic noise radiation in the VLF range at three fixed frequencies for the period from 1997 to 2015 have been carried out. Periodograms with diurnal components associated with the periods of the Earth rotation relatively the
Drugin Gennady, Stasiy Ivan
doaj +1 more source
Diffraction modelling of mobile radio wave propagation in built-up areas
, 1991 This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.This thesis examines theoretical methods of modelling radio wave propagation in built-up areas, with particular application to mobile radio systems ...
Saunders, S.R, Saunders, Simon Reza
core
Cyclic Olefin Copolymers as Versatile Materials for Advanced Engineering Applications
Advanced Functional Materials, EarlyView.Cyclic olefin copolymers (COCs) are presented as highly versatile materials combining tunable synthesis, excellent optical properties, and mechanical robustness. Their potential spans microfluidics, bioengineering, and advanced electronics, while emerging self‐healing and sustainable solutions highlight future opportunities.
Giulia Fredi +3 more
wiley +1 more source
Parabolic equation toolbox for radio wave propagation
, 2015 IEEE Antennas and Propagation Society; The Institute of Electrical and Electronics EngineersA parabolic equation toolbox (called PETOOL) has been developed in MATLAB with a user-friendly Graphical User Interface (GUI) for modeling radio-wave propagation ...
Apaydin, Gokhan +11 more
core +1 more source
Titanium Suboxides Responsible for Electronic Anomaly Near Room Temperature in the Ti3C2Tx MXene
Advanced Functional Materials, EarlyView.Our multi‐technique study reveals that the near‐room‐temperature anomaly in Ti3C2Tx MXene is linked to titanium suboxide nanodomains, including Ti3O5, embedded within the MXene host. Their temperature‐driven transformation provides an alternative explanation to solvent‐ and swelling‐based models and offers new insight into the thermally activated ...
Bence G. Márkus +8 more
wiley +1 more source