Results 101 to 110 of about 2,024,598 (259)

Excellent Thermoelectric Performance Realized in SnSe Materials via Chemical Bond Tailoring Using GeTe as Molecule Scissors

open access: yesAdvanced Science, EarlyView.
The GeTe acting as “molecule scissors” can tailor chemical bond, the breaking of Ag‐Se bonds and the formation of Ge‐Se bonds occur in the A‐SnSe matrix, along with the formation of Ag2Se precipitates. This process helps to optimize the thermoelectric properties, and also improves its mechanical properties to a certain extent.
Xing Yang   +8 more
wiley   +1 more source

Molecular Electrocatalysis Coupled With a Palladium Membrane Reactor Affords Selective Nitrogen Reduction

open access: yesAdvanced Science, EarlyView.
A palladium membrane reactor delivers active hydrogen to homogeneous nickel terpyridine catalysts, which then selectively hydrogenate dinitrogen to ammonia. ABSTRACT Ammonia production is a cornerstone of modern industry and society, yet the conventional Haber–Bosch process accounts for nearly 2% of the global CO2 emissions. A promising and potentially
Morgan McKee   +11 more
wiley   +1 more source

Ionically Counter‐Programmable Phase‐Separation of Superstable Star‐Biopolyamide Coacervates for Electrothermally‐Responsive Pseudosolid Smart Windows

open access: yesAdvanced Science, EarlyView.
We develop bio‐based, star‐branched polyamides from itaconic acid and cadaverine with tunable lower critical solution temperature (LCST) transitions for dynamic solar modulation. Specific metal ion coordination with pyrrolidone moieties drives precise phase transitions via calcium‐induced salting‐in and sodium‐induced salting‐out mechanisms. Formulated
Jie Liu   +6 more
wiley   +1 more source

High‐Density‐Cluster Ru Catalyst Substitute for Pt/C Benchmark Improves Membrane Water Electrolysis

open access: yesAdvanced Science, EarlyView.
Yuan et al. report a high‐density, monodispersed Ru cluster catalyst featuring interfacial covalent bonds that modulate the electronic structure and optimize intermediate adsorption–desorption, thereby conferring pH‐universal HER activity with ampere‐level current densities and enabling the development of Pt‐free membrane electrodes.
Zhen Yuan   +7 more
wiley   +1 more source

RELACIONES PALEOFLORISTICAS DEL MIOCENO-PLIOCENO DEL NORTE ARGENTINO

open access: yesPublicación Electrónica de la Asociación Paleontológica Argentina, 2016
Resumen. Los objetivos de este trabajo son relacionar las paleofloras del Mioceno–Plioceno del norte de la Argentina que caracterizan a cada formación y a cada período, comparar las registradas en el noroeste con las del nordeste a fin de establecer sus ...
Silvina S. Garralla   +2 more
doaj  

Toward Practical Zn‐Ion Batteries Through Separator/Electrolyte Co‐Design

open access: yesAdvanced Science, EarlyView.
A hybrid organic–aqueous electrolyte enables thin commercial polypropylene separators to replace bulky glass‐fiber separators in practical Zn‐ion batteries. This electrolyte/separator co‐design improves wettability, promotes uniform Zn plating/stripping, and suppresses hydrogen evolution, resulting in 4360 h of symmetric‐cell cycling and stable Zn//NVO
Gao Wang   +6 more
wiley   +1 more source

PLESIOSAURS (DIAPSIDA, SAUROPTERYGIA) FROM LATE CRETACEOUS (LATE CAMPANIAN–EARLY MAASTRICHTIAN) MARGINAL MARINE ENVIRONMENTS FROM NORTH PATAGONIA

open access: yesPublicación Electrónica de la Asociación Paleontológica Argentina, 2015
During the late Campanian and early Maastrichtian, Northern Patagonia suffered the first stage of the Atlantic marine ingression that reached the Neuquén Basin. The Allen and La Colonia formations show the early stages of this change, and were deposited
José O´Gorman
doaj  

Hydrogen Production from Ammonia Electrochemical Cracking

open access: yesAdvanced Science, EarlyView.
NH3 electrochemical cracking (e‐cracking) is a complementary technique to centralized thermal cracking for releasing H2 from NH3. In this article, we review recent advances in catalyst development for these cracking techniques and conduct a techno‐economic analysis (TEA) to evaluate the economic feasibility of e‐cracking.
Yike Ye   +4 more
wiley   +1 more source

EL DISTURBIO ANTRÓPICO EN LOS REGISTROS POLINICOS DE MONTAÑA DURANTE EL CUATERNARIO TARDÍO DEL NOROESTE ARGENTINO.

open access: yesPublicación Electrónica de la Asociación Paleontológica Argentina, 2018
Resumen. Para comprender el origen causal de las variaciones del paisaje y particularmente de las comunidades vegetales en los diferentes escenarios ambientales con larga historia de ocupación humana, como los ecosistemas de montaña del noroeste ...
Liliana C. Lupo   +6 more
doaj  

Accelerated Discovery of Earth‐Abundant Oxygen Evolution Catalysts Through Surface‐Informed Active Learning

open access: yesAdvanced Science, EarlyView.
A surface‐informed active learning framework integrated with density functional theory enables resource efficient screening of the NiCoFe ternary composition space. Experimental validation identifies Ni55Co10Fe35 as the optimal composition, exhibiting favorable oxygen evolution reaction kinetics.
Hayun Jeon   +5 more
wiley   +1 more source

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