Results 141 to 150 of about 3,145 (290)

Interference Situational Aware Beam Pointing Optimization for Dense LEO Satellite Communication System [PDF]

open access: yes
Recently, the low earth orbit (LEO) mega-constellation faces serious time-varying interferences due to spectrum sharing, dense deployment, and high mobility.
Weidong Wang   +4 more
core   +1 more source

Rate-Adaptive LiDAR Point Cloud Streaming Over LEO Satellite Networks [PDF]

open access: yes
Emerging Low Earth Orbit (LEO) satellite networks provide reliable connectivity in rural areas, enabling an autonomous agriculture comprising fleets of fully connected robots. Many agricultural robots are equipped with Light Detection and Ranging (LiDAR)
Laniewski, Dominic, Aschenbruck, Nils
core   +1 more source

Topological Design and Routing for LEO Satellite Networks [PDF]

open access: yes, 1995
We investigate a topological design and routing problem for Low-Earth Orbit (LEO) satellite communication networks where each satellite can have a limited number of direct inter-satellite links (ISL's) to a subset of satellites within its line-of ...
H. S. Chang   +7 more
core  

Nitric oxide generation from nitrate at the cobalt center

open access: yesBulletin of the Korean Chemical Society, EarlyView.
Deoxygenation of a cobalt(II) nitrate complex with CO(g) or PPh3 yields a Co(NO)(NO2) species, which can alternatively be generated from a cobalt mononitrosyl complex, featuring a distinct {CoNO}8 core. Abstract Herein, we report the synthesis and reactivity of the cobalt(II) nitrate complex, (acriPNP)Co(NO3) (2).
Jeewon Chun, Yunho Lee
wiley   +1 more source

RIS-empowered LEO satellite networks for 6G: promising usage scenarios and future directions [PDF]

open access: yes
Low-Earth orbit (LEO) satellite systems have been deemed a promising key enabler for current 5G and the forthcoming 6G wireless networks. Such LEO satellite constellations can provide worldwide three-dimensional coverage, high data rate, and scalability,
Aryan Kaushik (11780603)   +8 more
core   +2 more sources

Mechanism study of an articular cartilage repair material and its forward‐looking test for space medicine

open access: yesBMEMat, EarlyView.
The regeneration process following dLhCG engraftment progressed through four distinct and interconnected stages. dLhCG maintained its regenerative efficacy after 6 months of cosmic exposure, supporting its potential application in space medicine.
Xu Hu   +8 more
wiley   +1 more source

Graphene Materials for Sustainable Energy Applications: A Contemporary Perspective

open access: yesCarbon Energy, EarlyView.
ABSTRACT Graphene has garnered significant attention as a promising material with great potential for contributing to sustainable energy initiatives, such as RE100 (100% renewable energy initiative) and CF100 (100% carbon‐free initiative). This review aims to explore the potential of graphene for advancing renewable energy applications by highlighting
Niraj Kumar   +3 more
wiley   +1 more source

Engineering Biochar‐Derived Functional Materials for High‐Performance Supercapacitors: Design Principles, Mechanisms, and Scalable Strategies

open access: yesCarbon Energy, EarlyView.
ABSTRACT Biochar has emerged as a useful and adaptable source of carbon for supercapacitor electrodes. Its value comes from the way biomass chemistry, thermal conversion, and activation conditions shape the resulting pore network, surface groups, and degree of carbon ordering.
Soumen Mandal   +6 more
wiley   +1 more source

Kirkendall‐Effect‐Mediated Hollow Bimetallic Hexacyanoferrates for Aqueous Zn‐Ion Batteries: Suppressing Jahn–Teller Distortions and Enhancing Ion Transport and Cyclability

open access: yesCarbon Energy, EarlyView.
Kirkendall‐engineered hollow Ni–Mn hexacyanoferrates feature Ni‐tunable shell thickness and uniform alloying, coupling architectural control with electronic stabilization. Composition–morphology co‐optimization suppresses Mn³⁺‐driven Jahn–Teller distortions and lowers charge‐transfer barriers, enabling rapid Zn²⁺ transport and reversible redox.
Jihong Kim   +12 more
wiley   +1 more source

Ruthenium‐Titania Interface‐Mediated Water Activation for High Turnover Frequency in Alkaline Hydrogen Evolution

open access: yesCarbon Energy, EarlyView.
Heterostructured interfaces can accelerate hydrogen evolution by improving water dissociation, yet their underlying mechanisms remain unclear. This study combines in situ Raman spectroscopy and density functional theory to reveal how the RuO2/TiO2 interface promotes both water dissociation and hydrogen adsorption, providing new insights into the ...
Dwi Sakti Aldianto Pratama   +3 more
wiley   +1 more source

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