Results 21 to 30 of about 419,180 (314)

Site occupancy of transition elements in C15 NbCr2 laves phase: A first-principles study [PDF]

open access: yesJournal of Mining and Metallurgy. Section B: Metallurgy, 2017
Using first-principles calculations, site occupancy behaviors of transition elements in C15 NbCr2 Laves phase are systematically investigated. Elements Y, Sc, Zr, Hf, Cd, Ta, Ti and Ag prefer to occupy the Nb site, and elements Zn, Pt, Re, Tc ...
Long Q., Wang J., Du Y., Nie X., Jin Z.
doaj   +1 more source

Determination of Macroelements, Transition Elements, and Anionic Contents of Commercial Roasted Ground Coffee Available in Jordanian Markets

open access: yesBeverages, 2020
Coffee is one of the most common drinks worldwide. Due to the variability of elements composition, coffee is important for human health. The aim of this study is to assess the concentration of certain selected elements of commercial samples of roasted ...
Sati Y. Al-Dalain   +4 more
doaj   +1 more source

3D-Based Transition hpq/hp-Adaptive Finite Elements for Analysis of Piezoelectrics

open access: yesApplied Sciences, 2021
This paper concerns the algorithm of transition piezoelectric elements for adaptive analysis of electro-mechanical systems. In addition, effectivity of the proposed elements in such an analysis is presented.
Grzegorz Zboiński, Magdalena Zielińska
doaj   +1 more source

Critical elements for a successful energy transition: A systematic review

open access: yesRenewable and Sustainable Energy Transition, 2023
The transition to a low-carbon energy future requires large amounts of many raw materials. Some of these materials are deemed critical in terms of their limited availability, concentrated supply chain networks, associated environmental impact, and ...
Mashael Kamran   +2 more
doaj   +1 more source

Origin of Petrified Wood Color

open access: yesGeosciences, 2016
Fossil forests have world-wide distribution, commonly preserving mineralized wood that displays vivid hues and complex color patterns. However, the origin of petrified color has received little scientific attention.
George Mustoe, Marisa Acosta
doaj   +1 more source

Bismuth-containing glassy reference materials for establishing the content of transition elements using luminescent-based methods

open access: yesСтандартные образцы, 2019
Modern express methods of analytical control are widely used for monitoring the quality of oxide materials. However, the possibilities of these methods are currently limited by the lack of versatile homogeneous reference materials (RMs).
V. V. Borisova   +4 more
doaj   +1 more source

Optimization of the Load of Transition Metal Oxides (Fe2O3, Co3O4, NiO and/or PdO) onto CeO2 Nanoparticles in Catalytic Steam Decomposition of n-C7 Asphaltenes at Low Temperatures

open access: yesNanomaterials, 2019
The main objective of this work is the catalyst optimization of Fe2O3-, Co3O4-, NiO- and/or PdO- (transition element oxides—TEO) functionalized CeO2 nanoparticles to maximize the conversion of asphaltenes under isothermal conditions at low ...
Oscar E. Medina   +4 more
doaj   +1 more source

Experimental Study of Supersonic Boundary Layer Transition Induced by Cylindrical Roughness Elements

open access: yesShanghai Jiaotong Daxue xuebao, 2021
The boundary layer transition process induced by different heights and quantities of the cylindrical roughness elements at Mach 3.0 is investigated experimentally by using the nano-tracer-based planar laser scattering (NPLS) technique. Fine structures of
JIN Long, YI Shihe, HUO Junjie, LIU Xiaolin, NIU Haibo
doaj   +1 more source

p-Block elements for catalysis

open access: yesnpj Computational Materials, 2021
Renewable energy applications largely rely on transition metal catalysts. Similar to organocatalysts, p-block elements exhibit transition-metal-like catalytic performances.
Zhen Zhou
doaj   +1 more source

Elements and Possible Constraints for a Smooth Energy Transition in India

open access: yesEcology, Economy and Society – The INSEE Journal, 2023
The Prime Minister of India laid down a target for India at COP 26—to achieve net zero emissions by 2070. Realizing this target depends upon a transition away from fossil fuels towards non-fossil-fuel alternatives.
Rakesh Kacker, Nidhi Srivastava
doaj   +1 more source

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