Results 51 to 60 of about 130,197 (244)

Lacunary matrices

open access: yes, 2001
We study unconditional subsequences of the canonical basis e_rc of elementary matrices in the Schatten class S^p. They form the matrix counterpart to Rudin's Lambda(p) sets of integers in Fourier analysis.
Harcharras, Asma   +2 more
core   +1 more source

Photoswitchable Conductive Metal–Organic Frameworks

open access: yesAdvanced Functional Materials, EarlyView.
A conductive material where the conductivity can be modulated remotely by irradiation with light is presented. It is based on films of conductive metal–organic framework type Cu3(HHTP)2 with embedded photochromic molecules such as azobenzene, diarylethene, spiropyran, and hexaarylbiimidazole in the pores.
Yidong Liu   +5 more
wiley   +1 more source

DAFSA: a Python library for Deterministic Acyclic Finite State Automata [Software]

open access: yes, 2020
This work describes dafsa, a Python library for computing graphs from lists of strings for identifying, visualizing, and inspecting patterns of substrings.
Tresoldi, T.
core   +1 more source

Understanding and Optimizing Li Substitution in P2‐Type Sodium Layered Oxides for Sodium‐Ion Batteries

open access: yesAdvanced Functional Materials, EarlyView.
This work explores Li‐substituted P2 layered oxides for Na‐ion batteries by crystallographic and electrochemical studies. The effect of lithium on superstructure orderings, on phase transitions during synthesis and electrochemical cycling and on the interplay of O‐ versus TM‐redox is revealed via various advanced techniques, including semi‐simultaneous 
Mingfeng Xu   +5 more
wiley   +1 more source

Printed Integrated Logic Circuits Based on Chitosan‐Gated Organic Transistors for Future Edible Systems

open access: yesAdvanced Functional Materials, EarlyView.
Edible electronics needs integrated logic circuits for computation and control. This work presents a potentially edible printed chitosan‐gated transistor with a design optimized for integration in circuits. Its implementation in integrated logic gates and circuits operating at low voltage (0.7 V) is demonstrated, as well as the compatibility with an ...
Giulia Coco   +8 more
wiley   +1 more source

Cool Kitchen: Processing Starch and Eggshell Powder into Sustainable Coatings for Passive Daytime Cooling

open access: yesAdvanced Functional Materials, EarlyView.
A food‐grade cooling composite made from starch and recycled eggshell powder offers a scalable, ultra‐low‐cost solution for passive daytime radiative cooling. Easily prepared using basic kitchen tools, this material empowers communities, even in areas with limited infrastructure, to stay cooler during worsening summer heat waves.
Qimeng Song   +3 more
wiley   +1 more source

Intégrer la connectivité paysagère dans la séquence ERC : une approche par la quantité d'habitat atteignable

open access: yesVertigO, 2019
National, European and international commitments have been made to maintain and restore the connectivity of natural habitats to face habitat loss and fragmentation.
Laurent Bergès   +8 more
doaj   +1 more source

Joint Transmission and Energy Transfer Policies for Energy Harvesting Devices with Finite Batteries

open access: yes, 2015
One of the main concerns in traditional Wireless Sensor Networks (WSNs) is energy efficiency. In this work, we analyze two techniques that can extend network lifetime.
Biason, Alessandro, Zorzi, Michele
core   +1 more source

Chemoselective Sequential Polymerization: An Approach Toward Mixed Plastic Waste Recycling

open access: yesAdvanced Functional Materials, EarlyView.
Inspired by biological protein metabolism, this study demonstrates the closed‐loop recycling of mixed synthetic polymers via ring‐closing depolymerization followed by a chemoselective sequential polymerizations process. The approach recovers pure polymers from mixed feedstocks, even in multilayer formats, highlighting a promising strategy to overcome a
Gadi Slor   +5 more
wiley   +1 more source

Ethnogrinding Database: A tool to collect and connect worldwide information on ethnological and ethnoarchaeological hand-milling systems

open access: yesJournal of Lithic Studies, 2020
This study advances research carried out during the creation of a bibliographic database of ethnological information regarding hand milling systems in the framework of the ERC-Project PLANTCULT Identifying the Food Cultures of Ancient Europe: an ...
Natàlia Alonso   +4 more
doaj   +1 more source

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