Results 41 to 50 of about 249,243 (285)

Anodic oxides on Al-Nb alloys and niobium [PDF]

open access: yes, 2007
Tese submetida à Universidade de Manchester para obtenção do Grau de Doutor em Engenharia de MateriaisAnodic oxide films of aluminium and tantalum have been widely used as dielectric materials in the capacitor industry.
de Sá, A.I.
core   +2 more sources

Niobium-Titanium-Based Photocatalysts: Its Potentials for Free Cyanide Oxidation in Residual Aqueous Effluent

open access: yesFrontiers in Chemistry, 2020
Organic compounds are employed as additives to increase the dissolution speed of gold, in concentrations around 1 g/L when using cyanidation, thereby forming a residual aqueous effluent with high amounts of free cyanides and organic compounds, which ...
Aida Liliana Barbosa López   +1 more
doaj   +1 more source

Recent developments in Nb‐based oxides with crystallographic shear structures as anode materials for high‐rate lithium‐ion energy storage

open access: yesBattery Energy, 2023
High‐power lithium‐ion batteries (LIBs) are required for a variety of technological applications, especially in the field of electric vehicles (EVs).
Yanchen Liu   +3 more
doaj   +1 more source

Re‐Purposing Sapropterin (Kuvan) for ACTA2‐Related Multisystemic Smooth Muscle Dysfunction Syndrome: A Translational Mechanistic and First‐In‐Human Therapeutic Report

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Multisystemic smooth muscle dysfunction syndrome (MSMDS) is an ultra‐rare, ACTA2‐related disorder characterized by severe cerebrovascular disease, aortic aneurysms, and smooth muscle dysfunction. Using molecular dynamics simulations and in silico drug screening, we identified that sapropterin dihydrochloride (Kuvan) is a candidate capable of ...
Moran Hausman‐Kedem   +9 more
wiley   +1 more source

Cation-induced topical disordered niobium nickel oxide for robust hydrogen storage in magnesium hydride

open access: yesJournal of Magnesium and Alloys
Catalytic doping is one of the economic and efficient strategies to optimize the operating temperature and kinetic behavior of magnesium hydride (MgH2).
Shuai Li   +3 more
doaj   +1 more source

Oxidation of CO on tantalum, niobium, and niobium oxide

open access: yes, 2020
It was found experimentally that the catalytic activity of Ta and Nb in the reaction between CO and O2 increases with the activation energy after a thermogradient treatment of the catalysts in the reaction medium. A similar effect was not observed for niobium oxide; in this case, the reaction proceeded at two types of site with different activation ...
Issa A.   +2 more
openaire   +1 more source

Phase equilibria in the system vanadium oxide-niobium oxide

open access: yesJournal of Research of the National Bureau of Standards Section A: Physics and Chemistry, 1965
The phase diagram for the pseudo-binary system V2O5-Nb2O5 was constructed from fusion characteristics and x-ray diffraction data. Three compounds were postulated for the system. The compound VNb9O25 and V2Nb23O62 were found to melt incongruently at about 129O °C and 1322 °C respectively. The third compound occurring at about 93 to 94 mole percent Nb2O5
J L, Waring, R S, Roth
openaire   +2 more sources

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

open access: yesAdvanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios   +5 more
wiley   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

open access: yesAdvanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth   +6 more
wiley   +1 more source

X-ray K-absorption edge of niobium in niobium metal and its oxides

open access: yes, 1970
The position and fine structure of the x-ray K-absorption edge of niobium in niobium metal and in its oxides have been investigated using a 400-mm bent crystal (mica) spectrograph.
Bhide, V. G.   +3 more
core   +1 more source

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