Results 91 to 100 of about 487,506 (299)

Decoupling the Size and Loading Effects in Silver Nanoparticles for Efficient Paired Carbon Dioxide and Formaldehyde Electrolysis

open access: yesAdvanced Functional Materials, EarlyView.
We investigate size‐dependent CO selectivity on Ag nanoparticles, where optimized Ag loading achieves nearly 100% Faradaic Efficiency for CO at −100 mA·cm−2. In situ SERS and XPS reveal the crucial role of optimized loading in catalytic performance. The Ag/C catalyst further exhibits bifunctional activity, enabling efficient electrolysis of CO2 and ...
Venkata S. R. K. Tandava   +16 more
wiley   +1 more source

The DRACO V1 Stream Cipher

open access: yesIACR Transactions on Symmetric Cryptology
Time-memory-data tradeoff attacks, as described by Babbage (1995), Golić (1997), and Biryukov and Shamir (2001), require the internal state of a stream cipher to be at least twice the desired security level n, or equivalently twice the key length.
Subhadeep Banik   +5 more
doaj   +1 more source

New Family of Stream Ciphers as Physically Clone-Resistant VLSI-Structures

open access: yesCryptography, 2019
A concept for creating a large class of lightweight stream ciphers as Key Stream Generators KSGs is presented. The resulting class-size exceeds 2323 possible different KSGs.
Ayoub Mars, Wael Adi
doaj   +1 more source

Self‐Assembled Crystalline Peptoid Nanomaterials as Metal‐Free Enzyme Mimics for Enhanced Carbon Dioxide Hydration and Precipitation

open access: yesAdvanced Functional Materials, EarlyView.
Inspired by metal‐free carbonic anhydrases (CAs) that achieve efficient catalysis without metal cofactors, we herein report a sequence‐defined supramolecular peptoid platform that mimics metal‐free CAs and exhibits hydrolytic activity via a supramolecular assembly‐mediated proton‐transfer mechanism.
Progyateg Chakma   +8 more
wiley   +1 more source

THE DYNAMIC CIPHERS – NEW CONCEPT OF LONG-TERM CONTENT PROTECTING [PDF]

open access: yes
In the paper the original concept of a new cipher, targeted at this moment forcivil applications in technology (e.g. measurement and control systems) and business (e.g.content protecting, knowledge-based companies or long-term archiving systems) is ...
Grzegorz Szewczyk
core  

Charge‐Polarized Ni─S4 Single‐Atom Sites Drive Selective Photoreforming of Poly(lactic acid) to Lactate and Hydrogen

open access: yesAdvanced Functional Materials, EarlyView.
Atomically dispersed Ni–S4 sites on CdS nanorods induce interfacial charge polarization, directing photogenerated electrons to H2 evolution and holes to selective ester‐bond cleavage of poly(lactic acid). Without sacrificial reagents, this charge‐coupled system produces lactate while suppressing overoxidation, achieving an H2 evolution rate of 41.74 ...
Yu Yao   +8 more
wiley   +1 more source

Development of Cryptographic Library Based on algorithms from eSTREAM project

open access: yesБезопасность информационных технологий, 2015
The research and realization of opportunities to improve program implementation of algorithms of eSTREAM project to increase their productivity are presented. The comparison between proposed implementations and author’s implementations was made.
Rostislav Alekseevich Gashin   +1 more
doaj  

Full‐Field Damage Monitoring in Architected Lattices Using In situ Electrical Impedance Tomography

open access: yesAdvanced Functional Materials, EarlyView.
In situ electrical impedance tomography (EIT) turns 3D‐printed, CNT‐infused architected lattices into full‐field damage‐imaging systems. Tunable Voronoi‐based geometries act as active sensing architectures, enabling conductivity maps to detect early‐stage damage and localise sequential ligament fracture before catastrophic failure.
Akash Deep   +4 more
wiley   +1 more source

Analysis of Atom against quantum attacks

open access: yesIET Quantum Communication
A significant amount of study is being done to review the security promises made for the various ciphers now in use as a result of the development of quantum computing technology.
Ravi Anand, Rimpa Nandi, Takanori Isobe
doaj   +1 more source

Lewis Acid Site Engineering in MOF‐Derived Aluminum Oxide/Carbon Composites for Dechlorination of Waste Plastic Pyrolysis Oil

open access: yesAdvanced Functional Materials, EarlyView.
Controlled carbonization of an Al‐MOF partially decomposes its linkers, exposing coordinatively unsaturated Al centers within an oxide/carbon composite. The resulting Lewis acid sites, rather than surface area, govern organochlorine capture: the composite removes chemically diverse organochlorines from waste plastic pyrolysis oil, outperforms a ...
Seong Cheon Kim   +6 more
wiley   +1 more source

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