Results 21 to 30 of about 2,680 (177)

Ag/Ag2S Nanoparticle‐Based In‐Materio Lightweight Cryptographic System for IoT Edge Security

open access: yesAdvanced Intelligent Systems, EarlyView.
This work presents a nanomaterial‐based in materio encryption method that directly transforms analog signals through nonlinear Ag/Ag2S nanoparticle networks. By exploiting the inherently nonuniform characteristics that arise from random arrangement of nanoparticles as a unique security key, the approach produces highly complex encrypted waveforms ...
Hiroki Tabata   +7 more
wiley   +1 more source

El ALCA

open access: yesECA: Estudios Centroamericanos, 2001
No hay resúmenes disponibles.  ECA Estudios Centroamericanos, Vol. 56, No. 633-634, 2001: 699-714.
openaire   +1 more source

A Tert‐Alkyl Terephthalate Derivative as a Universal Degradable Unit for Condensation Polymers

open access: yesAngewandte Chemie, EarlyView.
A sterically bulky dicarboxylic acid core bearing a tertiary alkyl ester enables photocatalytic C─O bond cleavage via generation of a stabilized tertiary alkyl radical. Incorporated into polyarylate, polyurethane, and polyester, this universal trigger facilitates efficient degradation under identical conditions (up to 99% within 2–4 h). Remarkably, the
Yasuyuki Nitta   +7 more
wiley   +1 more source

Glycine‐Induced Unique Crystal Packing of Octacyanidetungstates With Strong Intermolecular Antiferromagnetic Interaction, Near‐Infrared Emission, and Second Harmonic Generation

open access: yesAngewandte Chemie, Volume 138, Issue 27, 1 July 2026.
Glycine molecules induce a unique crystal packing into a supramolecular one‐dimensional columnar structure of octacyanidotungstates, which exhibits exceptionally strong antiferromagnetic superexchange interactions of J = −42.41(2) K between adjacent octacyanidotungstate units.
Tatsuya Konishi   +8 more
wiley   +2 more sources

ALCA: seu início e seu destino temas que causam divergências entre governos e negociadores. Doi: 10.5020/2317-2150.2006.v11n1p60

open access: yesPensar, 2010
O artigo enfoca comércio internacional visualizando livre comércio e integração econômica. Mudanças advindas do processo de globalização da economia tornaram irreversível o surgimento de blocos de comércio tais como UE, CAN, NAFTA MERCOSUL e por último a
Antônio Walber Matias Muniz
doaj   +1 more source

The Range of the Garefowl (Alca impennis) [PDF]

open access: yesNature, 1898
IN 1856 the late Dr. Gray obtained for the British Museum an example of this extinct species from the collection of the late Prof. van Lidth de Jeude of Utrecht, and for some reason unknown to me had the locality “Labrador” painted on its stand. As I had been informed with certainty by the late Prof. J. T.
openaire   +2 more sources

In situ Generation of Fluoride Catalysts for CO2‐to‐Formic Acid Conversion With Silicon Reducing Agent

open access: yesChemistry – A European Journal, EarlyView.
Reductive conversion of CO2 to formic acid with waste silicon reducing agent catalyzed by in situ generation of active fluoride species from a tertiary amine, protonic acid, and simple inorganic fluoride salt, such as KF and NaF. ABSTRACT The activation and catalytic reduction of carbon dioxide (CO2) using silicon‐based reducing agents is an important ...
S. M. A. Hakim Siddiki   +6 more
wiley   +1 more source

Anchoring Monolayer TiOx Nanosheets on Gold Nanoparticles Enhances Catalytic Activity for CO Oxidation Depending on the Type of Support

open access: yesChemistry – A European Journal, EarlyView.
Monolayer TNS cover Au/SiO2 and Au/CeO2 surfaces, forming Au–TiOx contact structure that serve as active sites for CO oxidation, thereby significantly improving catalytic activity. On Au/SiO2, the Au–TiOx interface was generated through TNS adsorption and calcination, while TNS adsorption solely promoted the Au–TiOx interface formation on Au/CeO2.
Nayu Hamada   +9 more
wiley   +1 more source

Complications of Cochlear Implant Surgery in Low‐ and Middle‐Income Countries: A Systematic Review

open access: yesOtolaryngology–Head and Neck Surgery, EarlyView.
Abstract Objective Hearing loss disproportionately affects low‐ and middle‐income countries (LMICs). Recent advances in cochlear implant surgery have benefitted patients globally, but the risk of complications in LMICs may be heightened due to social and structural factors.
Akash Srinivasan   +4 more
wiley   +1 more source

Wari Lithic Technology on the Northern Coast of the Andes: Geochemical, 2D Geometric Morphometric, and Technological Analyses of Obsidian Bifaces From San José de Moro

open access: yesArchaeometry, EarlyView.
ABSTRACT This study examines Wari obsidian production in a cache of 39 bifaces found at the Late Moche site of San José de Moro (Jequetepeque Valley, North Coast of Peru, 700–850 ad). Portable X‐ray fluorescence, geometric morphometric, and technological analyses were used to investigate raw material provenance and bifacial production.
Antonio Pérez‐Balarezo   +2 more
wiley   +1 more source

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