Results 41 to 50 of about 3,423,847 (360)

Cryogenic Systems for Astronomical Research in the Special Astrophysical Observatory of the Russian Academy of Sciences

Photonics, 2023
This article presents the main results and new plans for the development of receivers which are cooled cryogenically to deep cryogenic temperatures and used in optical and radio astronomy research at the Special Astrophysical Observatory of the Russian ...
Yurii Balega, Oleg Bolshakov, Aleksandr Chernikov, Valerian Edelman, Aleksandr Eliseev, Eduard Emelyanov, Aleksandra Gunbina, Artem Krasilnikov, Ilya Lesnov, Mariya Mansfeld, Sergey Markelov, Mariya Markina, Guram Mitiani, Evgenii Pevzner, Nickolay Tyatushkin, Gennady Valyavin, Anton Vdovin, Vyacheslav Vdovin   +17 more
doaj   +1 more source

Space-borne radar observation of near-surface wind effect on anomalously highly-directional backscattering of radio waves from aeolian processes of sand and dust transporting in desert regions [PDF]

Радиофизика и электроника, 2020
Subject and purpose. The purpose of this work is to study the effect of wind on the anomalous scattering of radio waves during aeolian processes of sand and dust transporting. Мethods and methodology. The article analyzes the spatial variations of the
D.M. Bychkov, V.K. Ivanov, A.Ya. Matveev, V.N Tsymbal, S.E. Yatsevich   +4 more
doaj   +1 more source

Generation of OAM radio waves with three polarizations using circular horn antenna array

European Conference on Antennas and Propagation, 2015
An effective solution of generating OAM-carrying radio beams with three polarizations is provided. Through the reasonable configuration of phased antenna array using elements with three polarizations, the OAM radio waves with three polarizations for ...
X. Bai, Xianling Liang, R. Jin, Jun-ping Geng   +3 more
semanticscholar   +1 more source

Radio Localization and Mapping With Reconfigurable Intelligent Surfaces: Challenges, Opportunities, and Research Directions [PDF]

IEEE Vehicular Technology Magazine, 2019
5G radio for millimeter-wave (mm-wave) and beyond5G concepts at 0.1-1 THz can exploit angle and delay measurements for localization through an increased bandwidth and large antenna arrays, but they are limited in terms of blockage caused by obstacles ...
H. Wymeersch, Jiguang He, B. Denis, A. Clemente, M. Juntti   +4 more
semanticscholar   +1 more source

Orbital Angular Momentum Waves: Generation, Detection, and Emerging Applications [PDF]

IEEE Communications Surveys and Tutorials, 2019
Orbital angular momentum (OAM) has aroused a widespread interest in many fields, especially in telecommunications due to its potential for unleashing new capacity in the severely congested spectrum of commercial communication systems.
Rui Chen, Hong Zhou, M. Moretti, Xiaodong Wang, Jiandong Li   +4 more
semanticscholar   +1 more source

A radio counterpart to a neutron star merger [PDF]

Science, 2017
GROWTH observations of GW170817 The gravitational wave event GW170817 was caused by the merger of two neutron stars (see the Introduction by Smith). In three papers, teams associated with the GROWTH (Global Relay of Observatories Watching Transients ...
G. Hallinan, A. Corsi, K. Mooley, K. Hotokezaka, E. Nakar, M. Kasliwal, D. Kaplan, D. Frail, S. Myers, T. Murphy, T. Murphy, K. De, D. Dobie, D. Dobie, D. Dobie, James R. Allison, James R. Allison, K. Bannister, V. Bhalerao, P. Chandra, T. Clarke, S. Giacintucci, A. Ho, A. Horesh, N. Kassim, S. Kulkarni, E. Lenc, E. Lenc, F. J. Lockman, Christene Lynch, Christene Lynch, D. Nichols, S. Nissanke, N. Palliyaguru, W. Peters, T. Piran, J. Rana, Elaine M. Sadler, Elaine M. Sadler, L. Singer   +39 more
semanticscholar   +1 more source

Diffuse Radio Emission from Galaxy Clusters [PDF]

Space Science Reviews, 2019
In a growing number of galaxy clusters diffuse extended radio sources have been found. These sources are not directly associated with individual cluster galaxies.
R. V. Weeren, F. Gasperin, H. Akamatsu, M. Brüggen, L. Feretti, Hyesung Kang, A. Stroe, A. Stroe, F. Zandanel   +8 more
semanticscholar   +1 more source

Hijacking emergency granulopoiesis: Neutrophil ontogeny and reprogramming in cancer

Molecular Oncology, EarlyView.
Neutrophils are highly plastic innate immune cells; their functions in cancer extend beyond the tumour microenvironment. This Review summarises current understanding of neutrophil maturation and heterogeneity and highlights tumour‐induced granulopoiesis as a systemic programme that expands immature, immunosuppressive neutrophils via tumour‐derived ...
Gabriela Marinescu, Yi Feng
wiley   +1 more source

Innovating Aircraft Repair Processes: The Role of Digitalization in Sustainability

Advanced Engineering Materials, EarlyView.
This research explores how digitalization—by storing detailed non‐destructive testing data in structured DICONDE databases and creating a standard data model of the component—innovates aviation maintenance and repair processes. Coupled with a developed state‐based simulation model, it enables data‐driven, sustainable repair strategies that reduce waste,
Johanna Aigner, Geo Jacob, Florian Raddatz, Gerko Wende   +3 more
wiley   +1 more source

Harnessing Fungal Biowelding for Constructing Mycelium‐Engineered Materials

Advanced Engineering Materials, EarlyView.
Mycelium‐bound composites (MBCs) offer low‐carbon alternatives for construction, yet interfacial bonding remains a critical challenge. This review examines fungal biowelding as a biocompatible adhesive, elucidating mycelium‐mediated interfacial mechanisms and their role in material assembly. Strategies to optimize biowelding are discussed, highlighting
Xue Brenda Bai, Xinrui Sarah Niu, Zhao Qin   +2 more
wiley   +1 more source