Results 61 to 70 of about 174,670 (291)

Electroplating of Wear‐ and Corrosion‐Resistant CrCoNi Medium‐Entropy Alloys beyond Hard Chromium Coatings

open access: yesAdvanced Functional Materials, EarlyView.
The electroplating of a CrCoNi medium‐entropy alloy is achieved using a mixture of an ionic liquid and an aqueous solution containing metal salts. The CrCoNi medium‐entropy alloy thin film exhibits high wear and corrosion resistance superior to conventional hard chromium coatings. Abstract High‐entropy alloys (HEAs) and medium‐entropy alloys (MEAs) are
Yuki Murakami   +7 more
wiley   +1 more source

Improved Safety Analysis Integration in a Systems Engineering Approach

open access: yesApplied Sciences, 2019
The goal of the paper is the integration of safety analysis in a model-based systems engineering approach to ensure consistency between system design and safety artifacts.
Anis Baklouti   +4 more
doaj   +1 more source

Medium‐Entropy Engineering of Magnetism in Layered Antiferromagnet CuxNi2(1‐x)CrxP2S6

open access: yesAdvanced Functional Materials, EarlyView.
This study explores the aliovalent substitution strategy with Cu and Cr replacing Ni in Ni₂P₂S₆ compounds to engineer magnetism. By creating CuxNi2(1‐x)CrxP2S6 medium‐entropy alloys, the research reveals the evolution of distinct magnetic phases, including the creation of weak ferromagnetism in intermediate compositions.
Dinesh Upreti   +9 more
wiley   +1 more source

Co-Pd-Ag AND Th-REE MINERALIZATION OF HOST ROCKS FROM THE EXOCONTACT ZONE OF TASHLY-TAU MASSIF, KHUDOLAZ COMPLEX (SOUTH URALS): ORE SOURCES AND FLUID INCLUSIONS DATA

open access: yesИзвестия Томского политехнического университета: Инжиниринг георесурсов, 2020
The relevance of the research is caused by the absence of research of geochemical peculiarities and ore mineralization of exocontact rocks of ore-bearing massifs belonging to Khudolaz layered complex.
Ildar R. Rakhimov   +2 more
doaj   +1 more source

Investigating the effects of particle size and dosage of talc nanoparticles as a novel solid collector in quartz flotation [PDF]

open access: yesInternational Journal of Mining and Geo-Engineering, 2019
In this study, hydrophobic talc nanoparticles were applied as a novel class of solid flotation collector. The aim of this work was to understand the effect of talc nanoparticles size and dosage on the quartz flotation recovery.
Abdolmotaleb Hajati   +4 more
doaj   +1 more source

Possible robust insulator-superconductor transition on solid inert gas and other substrates [PDF]

open access: yes, 2000
We present observations of the insulator-superconductor transition in ultrathin films of Bi on amorphous quartz, quartz coated with Ge, and for the first time, solid xenon condensed on quartz. The relative permeability $\epsilon_r$ ranges from 1.5 for Xe to 15 for Ge.
arxiv   +1 more source

Covalent On‐Cell Conjugation of Biomaterials Through Oxidative Phenolic Coupling Regulates Stem Cell Fate via Intracellular Biophysical Programming

open access: yesAdvanced Functional Materials, EarlyView.
On‐cell covalent crosslinking of hydrogel matrix to the membrane of a single cell using droplet microfluidics enables mechanotransduction and influences stem cell fate. This newly established approach influences stem cell fate, independent of YAP/TAZ mechanotransduction and non‐covalent reversible binding ligands yet by various intracellular ...
Castro Johnbosco   +6 more
wiley   +1 more source

Gold composition and conditions of Southern Ak-Dag gold-sulfide-quartz ore occurrence formation (Western Tuva)

open access: yesЛитосфера, 2020
Research subject. The paper presents data on the mineralogical, geochemical and fluid inclusion features of the Southern Ak-Dag gold-sulphide-quartz ore occurrence in Western Tuva.Methods.
N. N. Ankusheva, R. V. Kuzhuget
doaj   +1 more source

Comment on "Structure and Hyperfine Parameters of E' Centers in alpha-quartz and Vitreous SiO2" [PDF]

open access: yesarXiv, 1997
We point out that contrary to a recent suggestion by Boero et al. (PRL 78, 887 (1997)) the +1 charge state of the oxygen vacancy in alpha-quartz cannot be invoked as a candidate E' center in alpha-quartz and silica.
arxiv  

Frequency perturbation integral for piezoelectric quartz crystal microbalances based on scalar differential equations [PDF]

open access: yesarXiv, 2023
We study frequency shifts in a piezoelectric quartz resonator induced by a surface mass layer for sensor applications. The scalar differential equations for thickness-shear modes in a quartz plate are used. A first-order perturbation analysis is performed. The frequency shift is obtained and is expressed by a perturbation integral. It produces the well-
arxiv  

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