Results 41 to 50 of about 2,277,185 (305)

MnI‐Functionalized Covalent Organic Framework as Efficient Electrocatalyst for CO2 Reduction in a Catholyte‐Free Zero‐Gap Electrolyzer

open access: yesAdvanced Functional Materials, EarlyView.
This work demonstrates the successful integration of a phenanthroline‐based 2D COF with MnI catalytic sites into a catholyte‐free membrane‐electrode‐assembly cell for CO2 electroreduction. The crystalline COF actively suppresses Mn⁰–Mn⁰ dimerization, achieving a turnover frequency of 617 h⁻¹ at 2.8 V (full‐cell potential), and enabling stable operation.
Laura Spies   +8 more
wiley   +1 more source

1. Aspetti conoscitivi della metafora in Aristotele

open access: yesDoctor Virtualis, 2008
Per Aristotele la metafora non è un semplice ornamento del discorso ma possiede valore conoscitivo, perché consente di conoscere il simile e di cogliere concetti affini. Negli autori medievali la metafora mantiene la funzione di strumento di conoscenza?
Umberto Eco
doaj   +1 more source

Bezeichnenderweise Eco

open access: yesZeitschrift für Semiotik, 2018
Mit Umberto Eco hat die Semiotik einen der originellsten Zeichentheoretiker und zugleich einen Zeichen-setzenden Intellektuellen verloren. Dies ist mehr als eine Metapher: Ecos Analysen zeitgenössischer Kulturphänomene gingen so weit, dass er durch sie die betreffenden Kulturen veränderte.
Martin Siefkes   +2 more
openaire   +3 more sources

Factory Eco-Efficiency Modelling: Framework Development and Testing [PDF]

open access: yes, 2015
Eco-efficiency is becoming an increasingly important organisational performance measure. Its indicators are regularly used alongside productivity, cost, quality, health and safety in operations and corporate social responsibility reporting.
Astfalck, C.   +3 more
core  

Biodegradable and Recyclable Luminescent Mixed‐Matrix‐Membranes, Hydrogels, and Cryogels based on Nanoscale Metal‐Organic Frameworks and Biopolymers

open access: yesAdvanced Functional Materials, EarlyView.
The study presents biodegradable and recyclable mixed‐matrix membranes (MMMs), hydrogels, and cryogels using luminescent nanoscale metal‐organic frameworks (nMOFs) and biopolymers. These bio‐nMOF‐MMMs combine europium‐based nMOFs as probes for the status of the materials with the biopolymers agar and gelatine and present alternatives to conventional ...
Moritz Maxeiner   +4 more
wiley   +1 more source

Effects of Herbicides on Selenastrum capricornutum and Daphnia magna

open access: yes‬‭Majallah-i ̒Ilmī-i Shīlāt-i Īrān, 1997
The toxicity of five herbicides, Propanil, Machete, Rilof-H, Saturn, and Ronestar, commonly used in Iranian rice fields, were investigated in acute toxicity bioassays on two organisms belonging to different ig dquatic food chain.
M. Piri; V. Erdok
doaj  

Evaluation of Developing Economic Cooperation Organization (ECO) [PDF]

open access: yesپژوهشهای اقتصادی, 2008
ECO is one of the relatively successful regional trade associations over the world and Iran is also an active member since it has been founded. After collapse of the Soviet :union:, a group of new independent Moslem countries along with Afghanistan has ...
Mahmoud Haerian Ardakani
doaj  

Laser‐Induced Graphene from Waste Almond Shells

open access: yesAdvanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova   +9 more
wiley   +1 more source

Composites of Shellac and Silver Nanowires as Flexible, Biobased, and Corrosion‐Resistant Transparent Conductive Electrodes

open access: yesAdvanced Functional Materials, EarlyView.
Shellac, a centuries‐old natural resin, is reimagined as a green material for flexible electronics. When combined with silver nanowires, shellac films deliver transparency, conductivity, and stability against humidity. These results position shellac as a sustainable alternative to synthetic polymers for transparent conductors in next‐generation ...
Rahaf Nafez Hussein   +4 more
wiley   +1 more source

Tradurre il tempo. Umberto Eco traduttore del cronotopo in Sylvie di Nerval

open access: yesOcula, 2018
To the question "what does translation mean?", Eco responds translating. In Dire quasi la stessa cosa (Saying Almost the Same Thing) he resorts above all to his own "experiences in translation," as recites the subtitle of his book.
Susan Petrilli
doaj  

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