Results 41 to 50 of about 58,964 (308)

Diseño de controladores LQR/LQG para su aplicación en sistemas de pilas de combustible tipo PEM [PDF]

open access: yes, 2010
Presentado al IV Congreso Nacional de Pilas de Combustible celebrado en Sevilla del 16 al 18 de junio de 2010.[ES]: Se presentan aportes y soluciones de control en el campo de sistemas de celdas de combustible PEM (Proton Exchange Membrane).
Niknezhadi, Ali   +2 more
core  

Engineering Intelligent Graphene Oxide‐Cellulose Membranes: Suppressing Thermal Runaway for a Safer Aqueous Zinc‐Ion Batteries

open access: yesAdvanced Functional Materials, EarlyView.
A novel thermos‐responsive hydroxypropyl cellulose/graphene oxide (HPC/GO) composite membrane is fabricated for reversible temperature‐gated ion transport in aqueous zinc‐ion batteries. Enabled by LCST‐driven structural transition, unimpeded ion diffusion at room temperature delivers high capacity, while elevated temperature suppresses transport; full ...
Xueli Bi   +9 more
wiley   +1 more source

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

The tobacco reduction targets act: a legislated phase out for combustible cigarettes

open access: yes, 2018
Background and challenges to implementation The recent widespread marketing of alternative nicotine devices and heated tobacco products is heralded by some as a viable harm reduction strategy, and feared by others as a means of perpetuating the ...
Neil Collishaw, Cynthia Callard
core   +1 more source

Silicified Wood‐Inspired, High‐Strength Fire‐Resistant Chitin‐Based Aerogels for Sustainable High‐Temperature Thermal Insulation

open access: yesAdvanced Functional Materials, EarlyView.
Inspired by natural silicified wood, a biomimetic mineralized chitin‐derived aerogel is constructed. It can withstand 81 000 times its own weight, and its backside temperature is 130.4°C after exposure to ∼1300°C butane flame for 600 s, exhibiting high‐strength, fire‐resistance, and super thermal‐insulation properties.
Kai Xu   +11 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

Solvent Co‐Intercalation Enabled Ca Storage in MoS2 for Ca‐Ion Batteries

open access: yesAdvanced Functional Materials, EarlyView.
Regulating electrolyte solvation levels enables otherwise non‐intercalatable Ca2+ ions to reversibly co‐intercalate into molybdenum disulfide (MoS2) as ether‐solvated species. The intercalation reversibility is strongly governed by solvent chain length, as demonstrated using diethylene glycol dimethyl ether (G2) and tetraethylene glycol dimethyl ether (
Yudong Luo   +10 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

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