Results 41 to 50 of about 351,816 (303)

Lidar diagnostics of ionosphere precipitations

E3S Web of Conferences, 2018
Lidar is considered as an electron energy detector of ionosphere precipitations, and the cleaning of radiation belts is like the energy pumping of the ionosphere layer.
Shevtsov Boris, Perezhogin Andrey, Seredkin Ilya   +2 more
doaj   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

Changes of geoacoustic emission directivity at «Mikizha» site associated with earthquakes in Kamchatka

E3S Web of Conferences, 2016
To investigate high frequency geoacoustic emission, a receiving system based on a compound vector receiver was installed in Kamchatka. It allows the authors to determine the direction of sound wave arrival.
Marapulets Yuriy, Solodchuk Alexandra, Shcherbina Albert   +2 more
doaj   +1 more source

Ontology‐Aligned Structuring and Reuse of Multimodal Materials Data and Workflows Toward Automatic Reproduction

Advanced Engineering Materials, EarlyView.
Reproduction of stacking fault energy calculations from literature with a semi‐automated large language model‐assisted extraction procedure: extraction of simulation protocol, atomistic structures, computational parameters, and reported results, ontology alignment, knowledge graph construction and, finally, recomputation forvalidation.
Sepideh Baghaee Ravari, Abril Azocar Guzman, Sarath Menon, Stefan Sandfeld, Tilmann Hickel, Markus Stricker   +5 more
wiley   +1 more source

Diagnostics of geomagnetically-induced currents in high-tension electric transmission lines [PDF]

E3S Web of Conferences, 2019
The problem of geomagnetically-induced currents (GIC) effect on electrotechnical systems is topical as long as uninterrupted power distribution is critically important for all the spheres of human activity.
Sivokon Vladimir, Cherneva Nina, Malkin Evgeniy   +2 more
doaj   +1 more source

Radio Wave Propagation [PDF]

Nature, 1963
Monograph on Radio-Wave Propagation in the Troposphere Proceedings of Commission II on Radio and Troposphere during the XIIIth General Assembly of URSI, London, September 1961. Edited by J. A. Saxton. Pp. viii + 200. (Amsterdam and New York: Elsevier Publishing Company, 1962.) 48s. Monograph on Ionospheric Radio XIIIth General Assembly of URSI, London,
openaire   +1 more source

Indoor 3-D RT Radio Wave Propagation Prediction Method: PL and RSSI Modeling Validation by Measurement at 4.5 GHz

Electronics, 2019
This article introduces an efficient analysis of indoor 4.5 GHz radio wave propagation by using a proposed three-dimensional (3-D) ray-tracing (RT) modeling and measurement. The attractive facilities of this frequency band have significantly increased in
Ferdous Hossain, T. K. Geok, T. Rahman, M. N. Hindia, K. Dimyati, Sharif Ahmed, C. Tso, Azlan Abdaziz, W. Lim, Azwan Mahmud, Tan Choo Peng, Chia Pao Liew, V. Thiruchelvam   +12 more
semanticscholar   +1 more source

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

Advanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar, Akash Vyas, Mohammad Aatif Qazi, Nashit Jalal, Maria Ophelia Jarligo, Mostafa Yakout, Jing Liu, André McDonald   +7 more
wiley   +1 more source

Microstructure Reconstruction in Battery Electrodes Using Machine Learning Based on Low‐Voltage Focused Ion Beam–Scanning Electron Microscopy Tomography Images

Advanced Engineering Materials, EarlyView.
Low‐voltage FIB‐SEM tomography combined with a image preprocessing pipeline improves phase contrast and enables reliable machine‐learning segmentation of conductive networks in lithium‐ion battery electrodes. Structural descriptors are extracted from segmented images, done semimanually and automated, and compared.
Lisa Beran, Vincent Nebel, Dominik Perius, Kshitij Kumar, Yannis Heim, Laura Bies, Tobias Kraus   +6 more
wiley   +1 more source

Ionosphere disturbance during cosmodrome “Vostochniy” launches

E3S Web of Conferences, 2018
It is known that during spacecraft launches ionospheric plasma properties are modified in the result of impact of shock-acoustic waves generated during carrier rocket supersonic motion. As a rule, investigation of ionospheric plasma variations is carried
Dumbrava Zinaida F., Sivokon Vladimir P., Teslyuk Yuriy A., Khomutov Sergey Y.   +3 more
doaj   +1 more source