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Showing 1 to 20 of 25 for “"TRANSITION ELEMENTS"”.
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Low Temperature Specific Heat of Binary Alloys of Transition-Elements
Made available in DSpace on 2014-12-04T23:26:51Z (GMT). No. of bitstreams: 1 6206148.pdf: 3646952 bytes, checksum: 2f539d66e4f6a7dc3be22525e52ffcf0 (MD5) Previous issue date: 1962
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Experimentally generated partition coefficients for the first-row transition elements during eclogite partial melting at three gigapascals
… of the partitioning of the first-row transition elements (FRTE) between eclogite and melt, which could be used to fingerprint the source lithology of ocean island basalts (OIB) and infer participation of recycled lithologies in their generation. My simple forward melting modeling shows …
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Oscillator strength measurements in singly-ionized, doubly-ionized and neutral lanthanides and transition elements (sm, nd, pr, gd, cu, and fe) using laser-induced breakdown spectroscopy.
… electronic structure of the important heavy elements. Astrophysicists have therefore looked to laboratory astrophysics experiments to provide accurate atomic data to help resolve these limiting issues. In this dissertation, laser-induced breakdown spectroscopy (LIBS) has been employed for the …
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A Selective Approach to Hexahedral Refinement of Unstructured Conformal Meshes
… unable to effectively handle multiply-connected transition elements and self-intersecting hexahedral sheets. The Selective Approach method is a new procedure that combines two diverse methodologies to create an efficient and robust algorithm able to handle the above stated problems. These two …
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Distortions in the tetrahedral oxyanions of crystalline substances, with crystal structure refinements of slawsonite and celsian
… in use. Among tetrahedral oxyanions of non-transition elements, ELDP values of those exhibiting small bond-length distortions (e.g., LiO₄⁷⁻ and Ga₄⁵⁻) increase with the number of shared edges. For the oxyanions that show small edge-length distortions (e.g., Po₄³⁻ and SO₄²⁻) BLDP is related …
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Performance Of Interface Elements In The Finite Element Method
… is to assess the performance of interface elements in the finite element method. Interface elements are implemented in the finite element codes such as MSC.NASTRAN, which is used in this study. Interface elements in MSC.NASTRAN provide a tool to transition between a shell-meshed region to …
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The influence of cadmium on hepatic protein synthesis in the rat
… Table. It is divalent, as are the Group I IA elements Ca and Mg. In order of electropotential, Zn, Cd and Hg fal I below Ca and Mg but above the transition elements, with which they do not have close relationships. They have low melting points so their volatility, as in the case of Pb, is an …
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Implementação do método dos elementos de contorno para elasticidade bidimensional com o uso de microcomputadores
… Four different types of linear isoparametric elements have been implemented for the boundary discretization. These are: fully continuous, fully discontinuous and two alternative continuity transition elements. The program allows for subregions, multisurfaces, symmetry, self-weight, centrifugal …
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Characterization of particles created by laser-driven hydrothermal processing
… inclusions and particles rich in several transition elements, most notably iron and titanium. Analysis of liquid media collected after laser processing of bulk obsidian and tektite samples revealed fine particles rich in the same elements. Evidence suggests laser-driven hydrothermal …
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Flow injection analysis (FIA) determination of lead by hydride generation in banded coral skeletons /
… A sample throughput of 120 h"^ was achieved. The transition elements, Fe(II), FeOH), Cd(n), Co(II), Mn(n), Ni(II) and Zn(n) do not interfere in this method but 1 mg,l'l Cu(II) will suppress 50 % of the signal from a sample containing 20 ng.ml'l Pb. This method was successfully applied to determine …
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Operando Characterization of Lithium-Ion Batteries using Lab-Scale X-ray Emission/Absorption Spectroscopy
… changes in the electronic structure of target elements is crucial to investigate the nature of redox reactions occurring in battery electrodes. Core-hole characterization techniques such as X-ray Emission Spectroscopy (XES) and X-ray Absorption Fine Structure (XAFS) perform this role well …
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Ligas à base de ferro-titânio para aplicações de armazenamento de hidrogênio
… and difficult activation. With addition of transition elements, H2 absorption occurs at room temperature, under moderate pressure and without the need for heat treatments for activation. In this work, vanadium (V) and zirconium (Zr) were added in the TiFe alloys to improve the absorption …
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Integration of Just Transition Strategies into Nationally Determined Contributions (NDCs)
… social impacts. Recently, the concept of just transition has emerged as a significant approach to support countries to assist countries in minimising the adverse effects of the transition and maximising its benefits, ultimately enabling more ambitious climate actions. Despite the adoption of …
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Synthesis and properties of transition-metal arsenide nanostructures: from superparamagnetism to superconductivity
… new protocols for synthesis of nanostructured transition-metal pnictides including superconducting LiFeAs and studying their structure- property relationship. Nanostructured materials are known to differ in properties compared to their bulk counterparts owing to enhanced surface area and …
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Extension and applications of the GVVPT2 method to the study of transition metals
… Ni ) and second ( 2 Y , 2 Mo , and 2 Tc ) row of transition elements have been investigated for the first time with the generalized Van Vleck second order multireference perturbation theory (GVVPT2) method, a variant of MRPT. All potential energy curves (PECs) obtained in these studies were smooth …
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Specific heat of superconducting films of indium and of indium alloyed with magnetic impurities
… indium-chromium. Manganese and chromium are 3-d transition elements, and retain their magnetism when dissolved in indium. This is the first (investigation of this sort where 3-d magnetic impurities have been studied in a simple metal superconductor. Magnetic impurities depress the superconducting …
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Evaluation of efficiency of partial hybrid finite element method using composite laminates with crack
… approach using partial hybrid finite elements is examined by the determination of interlaminar stress fields around interior delamination crack tips in composite laminates subjected to out-of-plane loading. The stress field consisting of both in-plane and out-of-plane components around …
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Element substituted aluminophosphates
… investigation aiming to the incorporation of the transition elements: cobalt, vanadium, and molybdenum into AlPO₄-5 molecular sieves, to the study of the redox properties of the resulting materials and to the potential application of these compounds in the partial oxidation of methane to methanol …
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Quantum Monte Carlo Study of Hydrogen Adsorption on Carbon and Transition Metal Systems
… is chosen as representative of larger carbon-transition-metal systems that may be relevant for practical hydrogen storage. To the author's knowledge this is the first study of hydrogen adsorption on transition metal systems by QMC methods. These systems present challenges in terms of a large …
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