Results 41 to 50 of about 9,722 (253)

Impact of Inter-Satellite Links on the Cost and Placement of the Ground Segment of Q/V Band NGSO Constellations

open access: yesIEEE Access
Finding the cost-optimal number and placement of ground stations of non-geostationary satellite constellations is a complex problem whose solution significantly impacts the quality of the satellite service.
Clement Lacoste   +2 more
doaj   +1 more source

Topology-adapting routing strategy for global navigation satellite system

open access: yesInternational Journal of Distributed Sensor Networks, 2017
In order to implement global precision navigation, the global navigation satellite system must rely on information exchange with the ground station to achieve system time synchronization and inter-satellite ranging. For the limitations of ground stations
Yue Zhao, Xianqing Yi, Zhenwei Hou
doaj   +1 more source

Make‐Use‐Remake: Toward Indefinite Low‐Temperature Material Loops

open access: yesAdvanced Functional Materials, EarlyView.
We introduce a regenerable materials platform built from microparticles bound by a temperature‐responsive polymer shell, enabling strong, processable structures from diverse feedstocks. The material is shaped at low temperatures (80°C) using common manufacturing methods and reprocessed repeatedly in the presence of water, demonstrating stable ...
Nikola Křivánková   +2 more
wiley   +1 more source

Microfluidic Nano‐Assembly of Red‐Blood‐Cell (RBC) Lipids and Components for Engineering Extracellular Vesicles

open access: yesAdvanced Healthcare Materials, EarlyView.
Engineered red blood cell‐derived extracellular vesicles (eRBCEVs) are synthesized via controlled microfluidic assembly from native RBC lipids, enabling tunable encapsulation of proteins, nucleic acids, nanoparticles, and viral vectors. The platform demonstrates reproducible nanoscale architecture, preserved membrane composition, and functional cargo ...
Chiranth K. Nagaraj   +23 more
wiley   +1 more source

Adaptive routing strategy in multi layer satellite communication networks

open access: yesTongxin xuebao, 2006
The characteristics of multi-coverage of multilayer satellite networks make sure of good validity and reliability of the space-based networks.Walker delta type constellation guarantees permanent inter satellite links between satellites in the same layer ...
LI Hui, GU Xue-mai
doaj   +2 more sources

Engineering Nanoplatforms for Alzheimer's Disease Detection via Biomolecular Corona Proteomic and Lipidomic Profiling

open access: yesAdvanced Healthcare Materials, EarlyView.
Engineered nanoparticles capture disease‐specific biomolecular coronas that uncover hidden molecular features of Alzheimer's disease. Combined proteomic and lipidomic analyses reveal a characteristic shift in ribosomal machinery and energy metabolism, generating a multiomic fingerprint that supports accurate disease detection and opens new ...
Antonietta Greco   +7 more
wiley   +1 more source

Survey of Low Earth Orbit Satellite Communication Network Routing Technology

open access: yes天地一体化信息网络, 2022
Low earth orbit satellite communication network is an important part of the internet of everything era, but the characteristics of satellite constellation topology such as high dynamic, limited heterogeneous resources and unbalanced network service ...
Shuang ZHENG, Xing ZHANG, Wenbo WANG
doaj   +2 more sources

Portable Molecularly Imprinted Polymer Sensor for Rapid Swab‐Based Detection of Norovirus

open access: yesAdvanced Healthcare Materials, EarlyView.
This work reports a rapid, portable smartphone‐based sensor capable of detecting four norovirus genotypes from swab samples within 15 min. Sensor selectivity was validated through evaluation against four common live viruses. The swab‐based sampling process enabled simple sample preparation combined with the compact detection system, supporting use of ...
Amy Dann   +13 more
wiley   +1 more source

A Functional 2D Carbon Allotrope Combining Nanoporous Graphene and Biphenylene Segments

open access: yesAdvanced Materials, EarlyView.
The synthesis of a novel nanoporous graphene (NPG) is reported with biphenylene segments via thermal fusion of 12‐armchair porous graphene nanoribbons grown on gold surfaces. Characterization using STM, AFM, and DFT reveals low‐defect semiconducting behaviour and tunable band gaps.
Paula Angulo‐Portugal   +14 more
wiley   +1 more source

Inter-satellite link technologies and applications in Low Earth Orbit satellite networks

open access: yesICT Express
To support the objectives of next-generation networks, Low Earth Orbit (LEO) satellite communications have attracted significant attention. In large-scale LEO constellations, Inter-Satellite Links (ISLs) are crucial for satisfying a range of network ...
Byoungkyu Ji   +4 more
doaj   +1 more source

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