Results 111 to 120 of about 2,425,563 (382)

Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control

Advanced Engineering Materials, EarlyView.
This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian, Frédéric Demoly, Mohammad Lakhi, Bernard Rolfe, Mahdi Bodaghi   +4 more
wiley   +1 more source

Improving BDS broadcast ephemeris accuracy using ground-satellite-link observations

Satellite Navigation, 2022
The BeiDou Navigation Satellite System (BDS) employs a hybrid constellation including GEO (Geosynchronous Earth Orbit), IGSO (Inclined Geosynchronous Orbit), and MEO (Medium Earth Orbit) satellites, where the GEO and IGSO satellites are critical to ...
Junping Chen, Jungang Wang, Chao Yu, Yize Zhang, Bin Wang   +4 more
doaj   +1 more source

Satellites of the largest Kuiper Belt objects [PDF]

, 2006
We have searched the four brightest objects in the Kuiper Belt for the presence of satellites using the newly commissioned Keck Observatory Laser Guide Star Adaptive Optics system.
Bouchez, A. H., Brown, M. E., Campbell, R. D., Chin, J. C. Y., Conrad, A., Hartman, S. K., Johansson, E. M., Lafon, R. E., Le Mignant, D., Rabinowitz, D. L., Stomski, P. J., Jr., Summers, D. M., Trujillo, C. A., van Dam, M. A., Wizinowich, P. L.   +14 more
core   +2 more sources

Satellite Remote Sensing of Surface Urban Heat Islands: Progress, Challenges, and Perspectives

Remote Sensing, 2018
The surface urban heat island (SUHI), which represents the difference of land surface temperature (LST) in urban relativity to neighboring non-urban surfaces, is usually measured using satellite LST data. Over the last few decades, advancements of remote
Decheng Zhou, J. Xiao, S. Bonafoni, C. Berger, K. Deilami, Yuyu Zhou, S. Frolking, R. Yao, Zhi Qiao, José A. Sobrino   +9 more
semanticscholar   +1 more source

Phase Stability Study of the Marcasite‐Structure Solid Solutions (Fe,TM)Sb2 (TM = Cr, Ni) Synthesized via Combinatorial Co‐Deposition and Antimonization

Advanced Engineering Materials, EarlyView.
Phase diagrams of transition‐metal di‐pnictides have been efficiently and quickly explored by combinatorial deposition of transition‐metal films and subsequent antimonization enabling the study of compounds with volatile elements. In (Fe,Ni)Sb2 and the (Fe,Cr)Sb2 substitution series, phase separation has been evidenced between class‐A and B marcasites ...
Martin Kostka, Luqman Mustafa, Maik Golombiewski, Jill Fortmann, Aurelija Mockute, Alan Savan, Alfred Ludwig, Andreas Kreyssig, Anna E. Böhmer   +8 more
wiley   +1 more source

Evaluation of the performance of GNSS-based velocity estimation algorithms

Satellite Navigation, 2022
Global Navigation Satellite System (GNSS) based velocity estimation is one of the most cost-effective and widely used methods in determining velocity in geodesy and transport applications.
Li Ji, Rui Sun, Qi Cheng, Junhui Wang
doaj   +1 more source

Graphene–Catechol Dental Sealant: Antibacterial and Mechanical Evaluation

Advanced Engineering Materials, EarlyView.
This study presents dental sealants made with graphene and L‐DOPA‐modified graphene. L‐DOPA enhances graphene dispersion, improving sealant properties. The material shows antibacterial activity against S. mutans and L. casei, along with high strength and elasticity.
Renata Pereira, Flávio H. B. Aguiar, Rodrigo B. E. Lins, Maria C. A. J. Mainairdi, Bruna G. Silva, Marcela A. Ferretti, Klaus Rischka   +6 more
wiley   +1 more source

The Satellite of Procyon [PDF]

Nature, 1889
IT is well-known that Procyon, like Sirius, does not travel through space in a straight line, its motion undergoing changes similar to those which would result from the disturbing action of a large satellite. This explanation was advanced by Bessel in 1844, and though the satellite has not yet been seen, its existence has been placed beyond reasonable ...
openaire   +5 more sources

Assessment of GNSS zenith tropospheric delay responses to atmospheric variables derived from ERA5 data over Nigeria

Satellite Navigation, 2023
Tropospheric delay is a major error caused by atmospheric refraction in Global Navigation Satellite System (GNSS) positioning. The study evaluates the potential of the European Centre for Medium-range Weather Forecast (ECMWF) Reanalysis 5 (ERA5 ...
Ifechukwu Ugochukwu Nzelibe, Herbert Tata, Timothy Oluwadare Idowu   +2 more
doaj   +1 more source

First‐Principles Modeling of Solid Solution Softening and Hardening Effects in Al–Mg–Zr–Si Aluminum Alloys

Advanced Engineering Materials, EarlyView.
The role of various alloying elements in face‐centered cubic aluminum on the barrier of a Shockley partial dislocation during its motion is presented. The study aims to understand how alloying atoms such as Mg, Si, and Zr affect the energy landscape for dislocation motion, thus influencing the solid solution hardening and softening in aluminum, which ...
Inna Plyushchay, Zhengqing Wei, Nebahat Bulut, Sibylle Gemming   +3 more
wiley   +1 more source