Results 71 to 80 of about 720,166 (313)

Impact of MgO Additions on the Oxidation Resistance and Compression Behavior of Vanadium Alloys

open access: yesAdvanced Engineering Materials, EarlyView.
An increase in oxidation resistance at 600 °C is achieved for alloys containing more than 2.5 wt.% MgO. It has been established that, along with V2O5, MgO6V2, and Mg2O7V2 are formed, which are presumed to enhance oxidative stability. Furthermore, the possible transformation of Mg‐vanadates through reaction with CO2, which presumably occurs in this ...
Ievgen Solodkyi   +5 more
wiley   +1 more source

Uniform Amorphization of Crystalline Silicon Surfaces Enabled by Deep Ultraviolet Femtosecond Laser Pulses

open access: yesAdvanced Engineering Materials, EarlyView.
Deep‐UV (258 nm) femtosecond pulses enable uniform amorphous silicon writing on Si(100)/(111) with a six‐fold larger fluence amorphization window than NIR methods. Optimized fluence and overlap yield 20–45 nm uniform and continuous amorphous layers. Microscopy shows sharp interfaces, and real‐time reflectivity reveals nanosecond melt–resolidification ...
Wissal Benali   +5 more
wiley   +1 more source

Factores exógenos y desempeño de negocios de artesanía en México

open access: yesCiencias Administrativas Teoría y Praxis
El sector artesanal en México representa una fuente de ingresos para millones de personas y contribuye a la diversidad cultural y económica del país. Los micros y pequeños negocios (MyPes) de artesanía han enfrentado por años desafíos como competencias ...
Gustavo León-Vargas   +1 more
doaj   +1 more source

Investigación agropecuaria con enfoque agroecológico para el desarrollo de una agricultura sostenible en Nicaragua

open access: yesLa Calera, 2017
El objetivo de este ensayo es aportar reflexiones acerca de la investigación agropecuaria con enfoque agroecológico como herramienta para el desarrollo de una agricultura sostenible en Nicaragua.
Pedro Enrrique Muñoz Izaguirre
doaj   +1 more source

Superlubricity and Corrosion Inhibition Properties of Solvate Ionic Liquids in Hybrid Carbon Fiber Reinforced Plastic–Steel Interfaces

open access: yesAdvanced Engineering Materials, EarlyView.
Solvate ionic liquids lubrication reduced the coefficient of friction by ∼60% compared to dry sliding, reaching steady‐state values as low as 0.04–0.05. Corrosion weight‐loss measurements in 1 M HCl further demonstrated significant inhibition behavior, with only 100 ppm of [Li(G3)][TFSI] (∼68.5 μL/L) reducing corrosion‐product weight loss by 63 ...
Sameh Dabees   +6 more
wiley   +1 more source

Efeito da adição de componentes inorgânicos na resistência mecânica de moldes de areia para fundição Effect of addition of inorganic components on the mechanical strength of sand molds for casting

open access: yesCerâmica, 2012
O processo de fundição mais rápido, econômico e convencional é o de moldagem em areia a verde, onde o ligante principal é uma argila umedecida (bentonita).
M. S. Cilla, M. R. Morelli
doaj   +1 more source

Sanidad ambiental

open access: yesEcosistemas, 2004
Editorial.
Rivas, A., Olea Serrano, Nicolás
openaire   +3 more sources

Separability in the Ambient Logic

open access: yesLogical Methods in Computer Science, 2008
The \it{Ambient Logic} (AL) has been proposed for expressing properties of process mobility in the calculus of Mobile Ambients (MA), and as a basis for query languages on semistructured data. We study some basic questions concerning the discriminating power of AL, focusing on the equivalence on processes induced by the logic $(=_L>)$.
Hirschkoff, Daniel   +2 more
openaire   +6 more sources

Self‐Cleaning Sensor Surfaces for Long‐Term Environmental Monitoring

open access: yesAdvanced Engineering Materials, EarlyView.
Long‐term use of unattended outdoor sensors without soiling or biofouling is achieved through generation of a micro‐ and nanorough cuvette surface by combing hydrophobic nanoparticles with fluorinated polymers, crosslinked and surface‐attached through CHic chemistry. The coating demonstrates self‐cleaning behavior and prolonged outdoor stability, which
Sanam Kumari Rajak   +4 more
wiley   +1 more source

Entropy‐Driven Design of Low‐Melting‐Point Alloys via Compositionally Complex Strategy

open access: yesAdvanced Engineering Materials, EarlyView.
Conventional low‐melting‐point alloys (LMPAs) are limited by a narrow compositional space and inherent property trade‐offs. This review presents an entropy‐driven design strategy that overcomes these limitations, ushering in a new class of low‐melting‐point compositionally complex alloys (LMCCAs).
Yinghui Shang   +6 more
wiley   +1 more source

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