Results 41 to 50 of about 16,741 (259)

Reacciones en estado sólido para el sistema Al-MoO3 en la fabricación de materiales compuestos Al2O3-aluminuros de Mo

open access: yesRevista de Metalurgia, 2002
Los materiales compuestos de matriz cerámica (CMC's) de Al2O3 reforzados con partículas metálicas tienen propiedades mecánicas muy atractivas. Un área de investigación emergente es la fabricación de compuestos 3A (Alumina-Aluminide-Alloys), mediante la ...
J. Marín   +6 more
doaj   +1 more source

Internal combustion [PDF]

open access: yesCanadian Anaesthetists’ Society Journal, 1963
The inflammability of intestinal gases was demonstrated by Vulparious in the seventeenth century. The main gases incriminated are methane and hydrogen and their production is increased by a leguminous diet or by excessive fermentation in cases of pyloric stenosis with gross gastric stasis.
openaire   +2 more sources

Graphene Quantum Dot‐Induced Microstrain for Framework Stabilization of High‐Entropy Prussian Blue Analog in High‐Current Alkaline Hydrogen Evolution Reaction

open access: yesAdvanced Functional Materials, EarlyView.
The intrinsic distortion‐rich lattice of HEPBA with GQD‐enabled microstrain engineering establishes a mechanistic route toward high‐performance alkaline hydrogen evolution reaction. HEPBA inherently feature heterogeneous local coordination environments arising from multimetal incorporation, while properly introducing GQD during coprecipitation ...
Mia Rinawati   +10 more
wiley   +1 more source

OIL- AND GAS-BEARING POTENTIAL SEA AREAS OF THE EAST EUROPEAN PLATFORM

open access: yesГеологія і корисні копалини Світового океану, 2019
The history of geological exploration and search of oil and gas in the sea areas of the Eastern European platform — the Sea of Azov-the Black Sea and Barents Sea is illustrated. The structure of hydrocarbon deposits is described.
M.I. Pavlyuk, M.B. Yakovenko
doaj   +1 more source

Some mineralogical data on genesis of magmas of the Carpathian region

open access: yesГеофизический журнал, 2010
A brief characteristics of minerals of magmatic rocks is given: pyroxenes, olivine, spinel, garnet, tridymite. Composition of clinopyroxenes indicates two geodynamic regimes in Mesozoic: intraplate (continental crust destruction) and spreading one ...
Z. M. Lyashkevich
doaj   +1 more source

Ionic Precursors Transformed Into Vinyl Acetate Synthesis Catalyst via Reaction‐Driven Restructuring

open access: yesAdvanced Functional Materials, EarlyView.
This work demonstrates that a simple physical mixture of Pd and Au ionic precursors, KOAc promoter, and SiO2 support can transform into a highly active vinyl acetate synthesis catalyst through reaction‐driven restructuring. The results highlight reaction‐induced restructuring as an innovative and sustainable catalyst design strategy.
Byeong Jun Cha   +11 more
wiley   +1 more source

Groundwater pollution risks assessment in Ukraine-Poland transboundary aquifers

open access: yesВісник Харківського національного університету імені В.Н. Каразіна. Серія Геологія. Географія. Екологія
Problem statement. For states that share a common border it is important to have reliable and up-to-date information on the condition of groundwater used for water supply.
Галина Медвідь   +3 more
doaj   +1 more source

Polymer Substrates for Flexible Sensors: Advances and Contributions to Smart Agriculture

open access: yesAdvanced Functional Materials, EarlyView.
This review comprehensively summarizes recent advances in polymer‐based flexible sensors for smart agriculture, focusing on polymer substrate design, interface engineering, and applications in soil, plant, animal, aquaculture, and post‐harvest monitoring.
Yihui Li   +12 more
wiley   +1 more source

Functionalizing Micro‐to‐Mesoscopic Electrode Architectures for Regulating Electron Transfer Behaviors in Electrocatalysis

open access: yesAdvanced Functional Materials, EarlyView.
A systematic review is conducted to assess the influence of electrode architecture across micro‐ to mesoscopic length scales on electron‐transfer pathways in electrocatalysis. We discuss the structure‐activity relationships in electrocatalytic applications, including resource recovery and environmental remediation, and provide cost‐effective, efficient
Manshu Zhao   +6 more
wiley   +1 more source

2D Co‐Mo‐Hydroxide‐Based Multifunctional Material for the Development of H2‐Based Clean Energy Technologies

open access: yesAdvanced Materials, EarlyView.
2D α‐Co(OH)2 interleaved with Mo species displays an appealing dual functionality for the production and use of green hydrogen.Mo incorporation greatly benefits the electrochemical behaviour in Oxygen Evolution Reaction for H2 production, while the magnetocaloric response at liquid H2 temperature paves the way for alternative cryogenic refrigerants ...
Daniel Muñoz‐Gil   +14 more
wiley   +1 more source

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