Results 101 to 110 of about 2,490,935 (346)

Implementation Method of GEO and LEO Satellite Tracking Compatible Flat-Plate Antenna

open access: yes天地一体化信息网络, 2022
In order to improve the portability, disassembly and usability of the satellite communication antenna products in the fi eld, a GEO and LEO satellite tracking compatible fl at-plate antenna implementation method was proposed, the micro strip array ...
Jian CHEN   +4 more
doaj   +2 more sources

A Graph Convolutional Network Framework for Area Attention and Tracking Compensation of In-Orbit Satellite

open access: yesApplied Sciences
In order to solve the problems of low tracking accuracy of in-orbit satellites by ground stations and slow processing speed of satellite target tracking images, this paper proposes an orbital satellite regional tracking and prediction model based on ...
Shuai Wang   +7 more
doaj   +1 more source

A Versatile Microfluidic Extrusion‐Based Hydrogel Platform for Self‐Organization and Long‐Term Maintenance of Engineered 3D Lymphatic Endothelium

open access: yesAdvanced Healthcare Materials, EarlyView.
Microfluidic coaxial extrusion generates size‐controlled 3D lymphatic tubes from primary human dermal lymphatic endothelial cells in a defined four‐component matrix. These engineered vessels self‐organize into stable lymphatic endothelium, maintain selective macromolecular permeability for 30 days, and enable direct comparison with blood endothelial ...
Elsa Mazari‐Arrighi   +8 more
wiley   +1 more source

Natural Biomaterials for Osteochondral Repair: From Source to Strategy

open access: yesAdvanced Healthcare Materials, EarlyView.
Biological origin‐guided overview of natural biomaterials and therapeutic strategies for osteochondral tissue engineering. The circular diagram categorizes representative materials and strategies into plant/algae‐derived, microbial‐derived, animal‐derived, and human‐derived sources, centered on an osteochondral defect repair model.
Hengyu Liu   +5 more
wiley   +1 more source

Detecting Anomalous Non-Cooperative Satellites Based on Satellite Tracking Data and Bi-Minimal GRU with Attention Mechanisms

open access: yesApplied System Innovation
In recent years, the number of satellites in space has experienced explosive growth, and the number of non-cooperative satellites requiring close attention and precise tracking has also increased rapidly.
Peilin Li   +4 more
doaj   +1 more source

Satellite tracking resident songbirds in tropical forests. [PDF]

open access: yesPLoS One, 2022
Reeve AH   +7 more
europepmc   +1 more source

Counterintuitive Fluorescence Blue Shift in Symmetry Breaking Dicationic Bis(indolium) with Two‐Photon Absorption Properties for NIR Living Cell Imaging

open access: yesAdvanced Materials, EarlyView.
Highly water‐soluble dicationic bis(indolium) dyes have been prepared, showing excellent two‐photon absorption and light emission. Their fluorescence behavior discloses an unusual increasing blue shift with increasing solvent polarity, which, in parallel, is beneficial for enhanced detection in biological media.
Carlos Benitez‐Martin   +5 more
wiley   +1 more source

Design and development of orbit tracking software for a low cost satellite groundstation

open access: yes, 2009
This report gives an insight to Satellite Orbit Tracking Software developed by the author. The objective of this project is to design and develop a serverclient system for satellite orbit prediction services.
Tye, Woei Cherng.
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