Results 41 to 50 of about 4,061 (210)

Multifrequency VLBA Monitoring of 3C 273 during the INTEGRAL Campaign in 2003 - I. Kinematics of the Parsec Scale Jet from 43 GHz Data

, 2005
In this first of a series of papers describing polarimetric multifrequency Very Long Baseline Array (VLBA) monitoring of 3C 273 during a simultaneous campaign with the INTEGRAL gamma-ray satellite in 2003, we present 5 Stokes I images and source models ...
Abraham, Abraham, Asada, Attridge, Bååth, Camenzind, Carroll, Conway, Courvoisier, Courvoisier, Daly, E. Valtaoja, Ghisellini, Güijosa, Homan, Homan, Jorstad, K. Wiik, Kellermann, Krichbaum, Lobanov, Lähteenmäki, Lähteenmäki, M. Tornikoski, Mantovani, Nakamura, Readhead, Robson, Schmidt, Sokolov, T. Savolainen, Teräsranta, Teräsranta, Tzioumis, Valtaoja, Zavala, Zensus, Zensus   +37 more
core   +1 more source

A UAV‐based deep learning pipeline for intertidal macrobenthos monitoring: Behavioral and age classification in Tachypleus tridentatus

Remote Sensing in Ecology and Conservation, EarlyView.
The endangered tri‐spine horseshoe crab (Tachypleus tridentatus), a “living fossil” crucial to coastal ecology and biomedical research, is experiencing severe population declines. Effective conservation requires efficient monitoring, which traditional methods cannot deliver at scale. We develop an integrated UAV deep learning framework tailored to this
Xiaohai Chen, Yuyuan Bao, Ziwei Ying, Mujiao Xie, Ting Li, Jixing Zou, Jun Shi, Xiaoyong Xie   +7 more
wiley   +1 more source

Increasing the Reuse Potential of High‐Strength Steels by Extending the Fatigue Life through Surface Treatments

steel research international, EarlyView.
Surface reconditioning through mechanical and electrochemical polishing is shown to extend the fatigue life of predamaged 42CrMo4 steel by over 12 times. By removing ≈100 μm of surface material, surface‐driven fatigue damage is mitigated. This study introduces a reuse potential metric to evaluate fatigue recovery and support sustainable steel reuse. To
Ayush Shrivastava, Oguz Gulbay, Srinivasa Raghavan Raghuraman, Marion Kreins, Fabian Weber, Peter Starke, Alexander Gramlich, Ulrich Krupp   +7 more
wiley   +1 more source

Multiview Multistatic vs. Multimonostatic Three-Dimensional Ground-Penetrating Radar Imaging: A Comparison

Remote Sensing
The availability of multichannel ground-penetrating radar systems capable of gathering multiview, multistatic, multifrequency data provides novel chances to improve subsurface imaging results.
Mehdi Masoodi, Gianluca Gennarelli, Francesco Soldovieri, Ilaria Catapano   +3 more
doaj   +1 more source

A Probability‐Aware AI Framework for Reliable Anti‐Jamming Communication

CAAI Transactions on Intelligence Technology, EarlyView.
ABSTRACT Adversarial jamming attacks have increased on communication systems, causing distortion and threatening transmissions. Typical attacks rely on traditional, well‐defined cryptographic protocols and frequency‐hopping techniques. Nevertheless, these techniques become vulnerable when facing intelligent jammers.
Tawfeeq Shawly, Ahmed A. Alsheikhy
wiley   +1 more source

Design and analysis of defected ground structure transformer for dual-band antenna

The Journal of Engineering, 2014
This study presents a novel dual-band antenna design methodology utilising a dual-frequency impedance transformer with defected ground structure (DGS).
Wai-Wa Choi, Ka Fai Chang, Chon Chio Leong, Pedro Cheong, Kam Weng Tam   +4 more
doaj   +1 more source

A circuit-theoretic approach to the design of quadruple-mode broadband microstrip patch antennas [PDF]

, 2008
A novel method for the design of broadband patch antennas is described. The approach taken is to broadside couple two dual-mode patch antennas, resulting in a quad resonance antenna.
Abunjaileh, A.I., Hunter, I.C., Kemp, A.H.   +2 more
core   +1 more source

Role of reactive oxygen species in mediating peripheral hypoxic vasodilation and sympathoexcitation at high altitude

The Journal of Physiology, EarlyView.
Abstract figure legend High‐altitude acclimatisation increases muscle sympathetic nerve activity (MSNA) via activation of the arterial chemoreflex, pulmonary arterial baroreceptors and resetting of the sympathetic vascular baroreflex. However attempting to silence these mechanisms only partially normalises MSNA, implicating other contributory ...
Liam D. Corr, Andrew J. M. Douglas, Elliott J. Jenkins, Lauren E. Maier, Jodie L. Koep, Travis D. Gibbons, Adam Field, James D. Anholm, Katharine Foster, Zoe H. Adams, Lydia L. Simpson, Jonathan P. Moore, Tinna Traustadottir, Christoph Siebenmann, Joshua C. Tremblay, Mike Stembridge   +15 more
wiley   +1 more source

Enhancing the Nonlinear Optical Response Using Multifrequency Gold-Nanowire Antennas

Physical Review Letters, 2012
We introduce and experimentally demonstrate the concept of multifrequency optical antennas that are designed for controlling the nonlinear response of materials. These antennas consist of two arms of different lengths, each resonant with one of the incoming frequencies. They are embedded in a nonlinear medium (indium tin oxide) that acts as a receiver.
H. Harutyunyan, G. Volpe, R. Quidant, L. Novotny   +3 more
openaire   +3 more sources

Impact of Organic and Inorganic Fillers on the Performance of Ternary Biodegradable Poly(Butylene Succinate‐Co‐Butylene Adipate), Poly(Butylene Adipate‐Co‐Terephthalate), and Poly(3‐Hydroxybutyrate‐Co‐3‐Hydroxyvalerate) Blends

Polymer Composites, Volume 47, Issue 5, Page 4509-4526, 10 March 2026.
Development of a ternary blend composite based on PBAT/PBSA/PHVB with improved mechanical properties. ABSTRACT This study explores a ternary biodegradable blend of bio‐based poly(butylene succinate‐co‐adipate) (bio‐PBSA), poly(butylene adipate terephthalate) (PBAT), and poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) (PHBV).
Sasha Paquette, Matias Menossi, Ehsan Pesaranhajiabbas, Hamdy Khalil, Manjusri Misra, Amar Kumar Mohanty   +5 more
wiley   +1 more source