Results 121 to 130 of about 1,576,591 (388)

On Librations in Planetary and Satellite Systems [PDF]

, 1912
E. W. Brown
openalex   +1 more source

2D Covalent Moiré Superlattice from Fluorinating Twisted Bilayer Graphene

Advanced Functional Materials, EarlyView.
A novel class of moiré materials, termed covalent moiré superlattice is proposed, which can be synthesized by functionalizing moiré van der Waals materials. By fluorinating twisted bilayer graphene, the weak van der Waals interactions between twisted graphene layers are transformed into strong covalent bonds, making the moiré superlattice effects ...
Depeng Ji, Qiaoling Xu, Lede Xian
wiley   +1 more source

A principal positioning system for the Earth [PDF]

arXiv, 2003
The project SYPOR wishes to use the global navigation satellite system GALILEO as an autonomous relativistic positioning system for the Earth. Motivations and a sketch of the basic concepts underlying the project are presented. For non geodetic (perturbed) satellites, a two-dimensional example describes how the dynamics of the constellation of ...
arxiv  

On the cause of the variability of certain satellites of the planets of the solar system [PDF]

, 1910
T. J. J. See
openalex   +1 more source

The AMSC mobile satellite system [PDF]

The American Mobile Satellite Consortium (AMSC) Mobile Satellite Service (MSS) system is described. AMSC will use three multi-beam satellites to provide L-band MSS coverage to the United States, Canada and Mexico.
Agnew, Carson E., Bhagat, Jai, Exner, Michael L., Hopper, Edwin A., Kiesling, John D., Melillo, Lawrence, Noreen, Gary K., Parrott, Billy J.   +7 more
core   +1 more source

Wetting of Surface Grafted Hydrophilic‐b‐Hydrophobic Block Copolymer Brushes

Advanced Functional Materials, EarlyView.
The wetting properties of surface grafted diblock copolymer brushes are influenced by the thickness of the hydrophilic bottom block and the hydrophobic top block. The surface adapts in presence of water and the contact angles of the bottom block shine through. Abstract The wetting of diblock copolymer brushes by water is studied.
Benjamin Leibauer, Andres de los Santos Pereira, Diego Fernando Dorado Daza, Y. Wang, A.S. Hazrah, Ognen Pop‐Georgievski, Hans‐Jürgen Butt, Rüdiger Berger   +7 more
wiley   +1 more source

A New Navigation System Using Artificial Earth Satellites [PDF]

, 1960
F. G. Smith
openalex   +1 more source

An automated mapping satellite system [PDF]

Topographic maps are compiled by manually operated stereoplotters that recreate the geometry of two wide-angle overlapping stereo frame photographs. Continuous imaging systems such as strip cameras, electro-optical scanners, or linear arrays of detectors
Colvocoreses, A. P.
core   +1 more source

Stable Radical Polymers as New Electroactive Materials: Synthesis, Properties, and Emerging Applications

Advanced Functional Materials, EarlyView.
This review covers the recent advances in the synthesis and properties of stable radical polymers (SRPs) and presents their applications in electronics, magnetics, optoelectronics, and biomedicines. The review concludes with a discussion of the challenges in radical chemistry and functionalization, while shedding light on the groundbreaking potential ...
Yufeng Xiong, Yingjiang Li, Xinfang Cui, Shiwei Li, Xiangdong Peng, Yanyun Ju, Tong Zhou, Rui Feng, Yang Zhang, Zehong Wang, Qing Wang, Lijie Dong   +11 more
wiley   +1 more source

Analyzing Downlink Coverage in Clustered Low Earth Orbit Satellite Constellations: A Stochastic Geometry Approach [PDF]

arXiv
Satellite networks are emerging as vital solutions for global connectivity beyond 5G. As companies such as SpaceX, OneWeb, and Amazon are poised to launch a large number of satellites in low Earth orbit, the heightened inter-satellite interference caused by mega-constellations has become a significant concern.
arxiv