Results 121 to 130 of about 10,018,306 (276)

A Performance Analysis of a Low Earth Orbit Satellite System [PDF]

, 1999
This thesis provides a performance analysis of the TELEDESIC® Low Earth Orbit Satellite System. It analyzes the system\u27s performance to meet the real-time communications constraints with a full satellite constellation.
Ercakar, Korkut A.
core   +1 more source

Dual Single Atoms Boosting Photocatalytic Upcycling of Raw Polyvinylidene Fluoride Plastic

Advanced Materials, EarlyView.
To resolve the catastrophic disaster of plastic contamination, the Cu‐Fe dual‐single‐atom‐loaded In2P3S9 NSs photocatalyst was prepared for direct conversion of raw polyvinylidene fluoride plastic into valuable chemicals. The dual‐single‐atom catalyst exhibits exceptional performance, with a total acetic/formic acid production of ∼1351.8 µmol g−1 ...
Amin Talebian‐Kiakalaieh, Shiying Ren, Wenzhong Ji, Yun Liu, Bingquan Xia, Jingrun Ran, Shi‐Zhang Qiao   +6 more
wiley   +1 more source

Biomass DNA: An Emerging Building Block for Advanced Materials

Advanced Materials, EarlyView.
Biomass DNA is rapidly emerging from its traditional role as a genetic blueprint to serve as a versatile abundant, highly programmable polymeric building block. This review highlights the transformation of macroscopic bulk biomass DNA into next generation of functional materials, spanning from dynamic hydrogels, sustainable bioplastics, and high ...
Yuwei Hu, Itamar Willner, Li Niu
wiley   +1 more source

The potential of a constellation of low earth orbit satellite imagers to monitor worldwide fossil fuel CO₂ emissions from large cities and point sources. [PDF]

Carbon Balance Manag, 2020
Lespinas F, Wang Y, Broquet G, Bréon FM, Buchwitz M, Reuter M, Meijer Y, Loescher A, Janssens-Maenhout G, Zheng B, Ciais P.   +10 more
europepmc   +1 more source

Tailored Cationic Visible‐Light‐Active Interfaces for Sustainable, Biodegradable Nanofibers With Dual‐Mode Antimicrobial Activity and Robust Electrostatic Particle Capture

Advanced Materials, EarlyView.
Surface co‐functionalization of biodegradable nanofibers with sodium copper chlorophyllin and quaternary ammonium compounds achieves synergistic antimicrobial activity through combined photodynamic and contact‐killing mechanisms. The cationic surface provides humidity‐resistant electrostatic particle capture while maintaining rapid enzymatic ...
Dong Uk Lee, Jae Hak Shin, Seung Yeon Lee, In Ho Kim, Jiho Choi, Joon Young Park, Sang Bok Kim, Jeong Sang Son, Sang Hun Kim, Jae Hee Jung, Dong Yun Choi   +10 more
wiley   +1 more source

A low earth orbit satellite descent strategy

Technology transfer: fundamental principles and innovative technical solutions
The object of the article is the method of descending a satellite from low Earth orbit (LEO) at the end of its service lifetime for its disposal. The main problem is to ensure a safe and cost-effective disposal of the satellite while minimizing risks to the environment and other objects in orbit.
Berik Zhumazhanov, Abdikul Ashurov, Aigerim Zylgara   +2 more
openaire   +1 more source

Towards serverless edge computing in low-earth orbit satellite networks

TOWARDS SERVERLESS EDGE COMPUTING IN LOW-EARTH ORBIT SATELLITE NETWORKS Towards serverless edge computing in low-earth orbit satellite networks / Pfandzelter, Tobias (Rights reserved) (-
Pfandzelter, Tobias
core  

Photocatalytic Water Splitting on the Lunar Surface: Prospects for In Situ Resource Utilization

Advanced Materials Interfaces, EarlyView.
Water has been found in craters on the moon nearby locations which are illuminated >80% of the time. Photocatalysis uses energy from sunlight to drive chemical reactions such as water splitting to produce oxygen and hydrogen. It is a scalable technology that requires lighter equipment and utilizes resources available on the moon. ABSTRACT The discovery
Ranjani Kalyan, Thomas D. Small, Gregory F. Metha, Mahmoud Adel Hamza, Thomas J. O'Dea, Yideng Shen, Cameron J. Shearer   +6 more
wiley   +1 more source

Life‐Like Ferrous Oxide Microspheres from Kombucha

Advanced Materials Interfaces, EarlyView.
Kombucha bacterial cellulose, sodium alginate, and ferrous nitrate self‐assemble into membrane‐enclosed iron oxide microspheres. These microspheres bud daughter vesicles, sustain 24‐h electrochemical oscillations, and filter theta‐band signals.
Panagiotis Mougkogiannis, Anna Nikolaidou, Andrew Adamatzky   +2 more
wiley   +1 more source

Scalable Production of Disordered Nickel‐Iron‐Aluminum Oxides as Stable Anodes for Water Electrolysis: The Role of Aluminum

Advanced Materials Interfaces, EarlyView.
Solution precursor plasma spraying enables the scalable fabrication of porous and disordered nickel‐iron‐aluminum oxide coatings as precious‐metal‐free anodes. Aluminum inhibits crystal growth, optimizes local atomic sites, and enhances charge and ion transport to accelerate reaction kinetics, leading to excellent performance and operational stability.
Tugce Ustunel, Joakim Bäckström, Esdras J. Canto‐Aguilar, Mouna Rafei, Litty Thomas Manamel, Mahesh Ramakrishnan, Konstantin Klementiev, Nina Grunditz, Erik Zimmerman, Thomas Wågberg, Susanne Holmin, Eduardo Gracia‐Espino   +11 more
wiley   +1 more source