Relevant bibliographies by topics / Incompatible elements

Academic literature on the topic 'Incompatible elements'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Contents

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Incompatible elements.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Incompatible elements"

1

Winkler, D. C., and M. L. Accorsi. "Incompatible finite elements for laminated structures." Finite Elements in Analysis and Design 27, no. 1 (September 1997): 133–51. http://dx.doi.org/10.1016/s0168-874x(97)00010-3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Ørsted, Jeannette. "Quality and Efficiency: Incompatible Elements in Translation Practice?" Monde du travail 46, no. 2 (October 2, 2002): 438–47. http://dx.doi.org/10.7202/003766ar.

Full text
Abstract:
Abstract The aim of this article is to describe the quality assessment procedures in a large, national translation company. The company is more than ten years old, but the past five years' growth rates have been rapidly increasing. The growth in turnover can be attributed both to a high degree of customer loyalty based on a high level of efficiency and trust, and on high, well-defined and transparent quality standards. The company is based on the idea that translators should function in a working environment based on full-term employment. Consequently the increase in turnover has involved recruiting a large number of translators and support services in the IT-department. This is why quality assessment procedures are no longer an individual responsibility, but have become a corporate issue. Quality procedures must therefore be part of the daily routines and involve all aspects of the business. To understand the conditions of the translation market today, the author provides an overview of the market based on the ASSIM-study and information on the new economy. After that she presents the case of Translation House of Scandinavia and finally she discusses some of the possible quality assurance systems that are available today and are used by the translation industry.
APA, Harvard, Vancouver, ISO, and other styles
3

Changchun, Wu, Liu Xiaoyao, and T. H. H. Pian. "Incompressible-incompatible deformation modes and plastic finite elements." Computers & Structures 41, no. 3 (January 1991): 449–53. http://dx.doi.org/10.1016/0045-7949(91)90137-b.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Tauson, V. L., B. A. Loginov, V. V. Akimov, and S. V. Lipko. "Nonautonomous phases as potential sources of incompatible elements." Doklady Earth Sciences 407, no. 1 (February 2006): 280–83. http://dx.doi.org/10.1134/s1028334x06020292.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Rokaya, Asmita, Gokhan Egilmez, and Jeongho Kim. "Incompatible Graded Finite Elements for Orthotropic Nonhomogeneous Media." KSCE Journal of Civil Engineering 24, no. 12 (September 25, 2020): 3835–44. http://dx.doi.org/10.1007/s12205-020-0444-0.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Ju, Sang-Baek, and Hyo-Chol Sin. "New incompatible four-noded axisymmetric elements with assumed strains." Computers & Structures 60, no. 2 (July 1996): 269–78. http://dx.doi.org/10.1016/0045-7949(95)00371-1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Matsunuma, Satoshi, Hiroyuki Kagi, Kazuki Komatsu, Koji Maruyama, and Toru Yoshino. "Doping Incompatible Elements into Calcite through Amorphous Calcium Carbonate." Crystal Growth & Design 14, no. 11 (October 21, 2014): 5344–48. http://dx.doi.org/10.1021/cg500953h.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Gui, Hai Lian, Qing Xue Huang, Ya Qin Tian, and Zhi Bing Chu. "Application Incompatible Element in Mixed Fast Multipole Boundary Element Method." Key Engineering Materials 439-440 (June 2010): 80–85. http://dx.doi.org/10.4028/www.scientific.net/kem.439-440.80.

Full text
Abstract:
Based on fast multipole boundary element method (FM-BEM) and mixed variational inequality, a new method named mixed fast multipole boundary element method (MFM-BEM) was presented in this paper. In order to improve calculation time and accuracy, incompatible elements as interpolation functions were used in the algorithm. Elements were optimized by mixed incompatible elements and compatible elements. On the one hand, the difficult to satisfy precise coordinate was avoided which caused by compatible elements; on the other hand, the merits of MFM-BEM were retained. Through analysis of example, it was conclusion that calculation time and accuracy were improved by MFM-BEM, calculation continuity was also better than traditional FM-BEM. With increasing of degree of freedom, calculation time of MFM-BEM grew slower than the time of traditional FM-BEM. So MFM-BEM provided a theoretical basis for solving large-scale engineering problems.
APA, Harvard, Vancouver, ISO, and other styles
9

Chang-Chun, Wu, Huang Mao-Guang, and Theodore H. H. Pian. "Consistency condition and convergence criteria of incompatible elements: General formulation of incompatible functions and its application." Computers & Structures 27, no. 5 (1987): 639–44. http://dx.doi.org/10.1016/0045-7949(87)90080-0.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

YANG, Kun, He-Cui ZHANG, Richard CONVERSE, Li-Quan ZHU, Yong-Jun YANG, Li-Yan XUE, Bing LUO, Deng-Long CHANG, Qi-Guo GAO, and Xiao-Jia WANG. "Interaction between Two Self-incompatible Signal Elements, EXO70A1 and ARC1." ACTA AGRONOMICA SINICA 37, no. 12 (January 3, 2012): 2136–44. http://dx.doi.org/10.3724/sp.j.1006.2011.02136.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Incompatible elements"

1

Hild, Patrick. "Problemes de contact unilateral et maillages elements finis incompatibles." Toulouse 3, 1998. https://hal.archives-ouvertes.fr/tel-01144120.

Full text
Abstract:
On considere le probleme de contact entre deux solides deformables. Apres discretisation independante des solides par elements finis, les nuds des deux maillages ne sont pas en vis a vis sur la zone de contact. Il s'agit alors de raccorder les maillages , c'est a dire definir des conditions de contact discretes. Le but du travail consiste a trouver les conditions les mieux adaptees. Ceci, tant du point de vue mathematique de la bonne convergence des solutions discretes, que du point de vue de l'efficacite numerique et de la facilite d'implantation dans un code elements finis. On s'interessera plus particulierement au probleme de contact unilateral, avec ou sans conditions de frottement entre deux solides. On discutera de la meilleure maniere d'effectuer un calcul par elements finis avec des maillages incompatibles, resultats de convergence et essais numeriques a l'appui.
APA, Harvard, Vancouver, ISO, and other styles
2

Peña, Cabrera Freyre Alonso Raúl. "Los elementos subjetivos del injusto en los delitos contra el honor, un añadido incompatible con el principio de legalidad material." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2008. https://hdl.handle.net/20.500.12672/207.

Full text
Abstract:
La presente investigación obedece a dos baremos a saber: primero, de articular un planteamiento dogmático acorde con el principio de legalidad material; y segundo, tal vez lo más importante, de proporcionar dicha proposición dogmática a los operadores de justicia, a efectos de que puedan resolver los casos que llegan a su conocimiento, con corrección y justicia. Sin duda, hoy en día debe procurase que la ciencia jurídico-penal pueda contribuir a la administración de justicia penal, en orden a garantizar la seguridad jurídica, y a fortalecer el principio de igualdad constitucional, paradigma fundamental del Estado de Derecho. De tal manera que la postulación teórica que se pretende plantear en la presente monografía, rebasa un ámbito meramente científico, para adentrarse en el derecho aplicativo, con el propósito de cautelar la eficacia finalista del Derecho penal en el marco de un Estado Social y Democrático de Derecho. Si bien la presente monografía parte de una proposición dogmática, su finalidad esencial es contribuir en un estado fáctico, en cuanto a su aplicación por parte de los Tribunales de Justicia en nuestro país; por lo que la aspiración adquiere un ámbito de legitimación social, la verdadera pacificación de la conflictividad social producida por el delito.
Tesis
APA, Harvard, Vancouver, ISO, and other styles
3

Grbčić, Sara. "Linked interpolation and strain invariance in finite-element modelling of micropolar continuum." Thesis, Compiègne, 2018. http://www.theses.fr/2018COMP2454.

Full text
Abstract:
Au cœur de cette thèse est une théorie de continuum alternatif connue comme la théorie micropolaire, qui est développée pour décrire des phénomènes lesquels on ne peut pas décrire en utilisant la théorie classique. Dans cette théorie, en complément du champ de déplacement, il existe aussi un autre champ indépendant, celui de microrotation, et afin de pouvoir décrire complètement un tel matériau, six paramètres des matériaux sont nécessaires. Dans le cadre de la modélisation par éléments finis, nouveaux éléments fondés sur la théorie micropolaire dans les régimes linéaire et géométriquement non linéaire sont développés. Dans le cadre de l'analyse linéaire, les problèmes bi- et tri-dimensionnels sont analysés. En 2D, les nouvelles familles des éléments triangulaires et quadrilatères sont développés avec l'interpolation liée des champs cinématiques. Ensuite, la forme faible est étendue aux 3D, et un élément fini hexaédrique du premier ordre, avec le champ de déplacement enrichi avec des modes incompatibles est dérivé. Il est constaté que l'interpolation liée et les modes incompatibles améliore la précision par rapport à la précision des éléments finis micropolaires conventionnels. Dans le part non-linéaire, les éléments de premier et deuxième ordre avec l'interpolation conventionnelle sont développés. Pour tester la performance des éléments présentés, une solution analytique non-linéaire de la flexion pure est dérivée. Il est observé que les éléments convergent vers la solution dérivée. Les éléments sont testés sur les autres exemples où la dépendance du sentier et l'invariance de déformation sont détectés. Une procédure pour résoudre ces anomalies est présentée
At the core of this thesis is an alternative continuum theory called the micropolar (Cosserat) continuum theory, developed in order to describe the phenomena which the classical continuum theory is not able to describe. In this theory, in addition to the displacement field, there also exists an independent microrotation field and, in order to completely describe such a material, six material parameters are needed. In the framework of the finite-element method, new finite elements based on the micropolar continuum theory in both linear and geometrically non-linear analysis are developed using the displacement-based approach. In the linear analysis, both two- and three-dimensional set-ups are analysed. In 2D new families of triangular and quadrilateral finite elements with linked interpolation of the kinematic fields are derived. In order to assure convergence of the derived finite elements, they are modified using the Petrov-Galerkin approximation. Their performance is compared against existing conventional micropolar finite elements on a number of micropolar benchmark problems. It is observed that the linked interpolation shows enhanced accuracy in the bending test when compared against the conventional Lagrange micropolar finite element. Next, the weak formulation is extended to 3D and a first-order hexahedral finite element enhanced with the incompatible modes is derived. The element performance is assessed by comparing the numerical results against the available analytical solutions for various boundary value problems, which are shown to be significant for the experimental verification of the micropolar material parameters. It is concluded that the proposed element is highly suitable for the validation of the methodology to determine the micropolar material parameters. In the non-linear part, first- and second-order geometrically nonlinear hexahedral finite elements with Lagrange interpolation are derived. In order to test the performance of the presented finite elements, a pure-bending non-linear micropolar analytical solution is derived. It is observed that the elements converge to the derived solution. The elements are tested on three additional examples where the path-dependence and strain non-invariance phenomena are detected and assessed in the present context. A procedure to overcome the non-invariance anomaly is outlined
APA, Harvard, Vancouver, ISO, and other styles
4

Drouet, Guillaume. "Méthode locale de type mortar pour le contact dans le cas de maillages incompatibles de degré élevé." Thesis, Toulouse 3, 2015. http://www.theses.fr/2015TOU30142/document.

Full text
Abstract:
Dans cette thèse, nous développons une méthode locale de type "mortar" pour traiter le problème de contact avec maillages incompatibles de manière optimale dans un code de calcul par éléments finis de niveau industriel. Dans la première partie de la thèse, nous introduisons le cadre mathématique de la méthode intitulée "Local Average Contact" (LAC). Cette approche consiste à imposer la condition de non-interpénétration en moyenne sur chaque élément d'un macro-maillage défini de manière idoine. Nous commençons par développer une nouvelle technique de preuve pour démontrer l'optimalité des approches de type inéquation variationnelle discrétisée par éléments finis standards pour le problème de Signorini, sans hypothèse autre que la régularité Sobolev de la solution du problème continu. Puis nous définissons la méthode LAC et démontrons, à l'aide des nouveaux outils techniques, l'optimalité de cette approche locale modélisant le contact unilatéral dans le cas général des maillages incompatibles. Pour finir, nous introduisons la formulation mixte équivalente et démontrons son optimalité et sa stabilité. Dans la seconde partie de la thèse, nous nous intéressons à l'étude numérique de la méthode LAC. Nous confirmons sa capacité à gérer numériquement le contact unilatéral avec maillages incompatibles de manière optimale à l'instar des méthodes "mortar" classiques, tout en restant facilement implémentable dans un code de calcul industriel. On montre ainsi, entre autres, que la méthode passe avec succès le patch test de Taylor. Finalement, nous montrons son apport en terme de robustesse et au niveau de la qualité des pressions de contact sur une étude de type industrielle
In this thesis, we develop a local "mortar" kind method to deal with the problem of contact with non-matching meshes in an optimal way into a finite element code of industrial level. In the first part of the thesis, we introduce the mathematical framework of the Local Average Contact method (LAC). This approach consists in satisfying the non-interpenetration condition in average on each element of a macro-mesh defined in a suitable way. We start by developing a new technique for proving the optimality of variational inequality approaches discretized by finite elements modeling Signorini problem without other hypothesis than the Sobolev regularity of the solution of the continuous problem. Then we define the LAC method and prove, using the new technical tools, the optimality of this local approach modeling the unilateral contact in the general case of non-matching meshes. Finally, we introduce the equivalent mixed formulation and prove its optimality and stability. In the second part of the thesis, we are interested in the numerical study of the LAC method. We confirm its ability to optimally treat the contact problem when considering non-matching meshes like standard "mortar" methods, while remaining easily implementable in an industrial finite element code. We show, for example, that the method successfully passes the Taylor patch test. Finally, we show its contribution in terms of robustness and at the quality of the contact pressures on an industrial study
APA, Harvard, Vancouver, ISO, and other styles
5

Wen, Jyh Chung, and 溫志中. "THE MATHEMATICAL THEORIES FOR THE PATCH TEST AND F OR SOME HYBRID-STRESS AND INCOMPATIBLE ELEMENTS." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/63828123877479585493.

Full text
Abstract:
博士
國立清華大學
動力機械學系
83
The novel mathematical theories for the patch test are proposed in this thesis. Based on these theori es, the formulations of some hybrid stress element s and incompatible elements are examined in a unif ied manners.
APA, Harvard, Vancouver, ISO, and other styles
6

Reguir, Ekaterina. "Distribution of incompatible trace elements in rock-forming and accessory minerals from carbonatites as a tracer of magma evolution." 2011. http://hdl.handle.net/1993/4761.

Full text
Abstract:
Carbonatites are igneous rocks comprising more than 50 modal percent of carbonate minerals and characterized by highly variable modal compositions. The majority of carbonatites are confined to intra-continental rifts, whereas occurrences associated with plate margins and orogenic settings are less common. Petrogenesis of carbonatites has been a matter of intense debate for several decades. The possible genetic models include crystallisation from a primary carbonatite magma, liquid immiscibility and crystal fractionation from carbonate-rich silicate magma. In contrast to the voluminous bulk-rock trace-element data and major-element analyses of minerals from carbonatites available in the literature, there has been no systematic study concerned with the trace-element signatures of the most common constituents of these rocks. This work is the first comprehensive study of the interrelations between the trace-element chemistry of the most common constituents of carbonatites, the geochemistry of these rocks, and their tectonic setting. The rock samples examined represent 21 different localities worldwide. The extent of major- and trace-element substitutions in amphibole, clinopyroxene, trioctahedral micas, dolomite, magnetite and perovskite is investigated in detail. The silicate minerals from carbonatites exhibit much larger compositional diversity than previously recognized. They can incorporate significant amounts of such petrogenetically important elements as Sr, REE, Zr, Nb and Ta. The majority of studied clino-amphibole- and clinopyroxene-group minerals exhibit previously unrecognized a bimodal distribution patterns of REE, which can be explained in terms of crystal chemistry of these phases. The trace-element signature of phlogopite from carbonatites, particularly Nb, Mn, Ni and Cr, is distinctly different from that of phlogopite from kimberlites, and can be used as a reliable petrogenetic indicator. Compositional variations in dolomite reflect magmatic and subsolidus processes in carbonatites. Magnetite from carbonatites follows a well-defined magmatic and previously unrecognized reaction trend. Contrary to prior studies, this mineral is only a minor host of HFSE in carbonatitic rocks. The U-Pb age data, trace-element and Sr-isotopic composition of perovskite from the Afrikanda carbonatite and clinopyroxenite suggest that the two rocks are not related by crystal fractionation. This study underlines the importance of a systematic approach in petrogenetic studies based on trace-element distribution.
APA, Harvard, Vancouver, ISO, and other styles
7

Feltus, H. "New approaches to exploration for IOCG-style mineralisation, Middleback Ranges, S.A." Thesis, 2013. http://hdl.handle.net/2440/100074.

Full text
Abstract:
This item is only available electronically.
Iron oxide copper gold (IOCG) systems display well-developed spatial zonation with respect to alteration assemblages, mineralogy and the distribution of rare earth elements (REE). The Middleback Ranges, South Australia, located in the Olympic Province, Gawler Craton, hosts anomalous Fe-oxide-bearing Cu-Au mineralisation, and are considered potentially prosperous for larger IOCG-style deposits. This study investigates whether the distribution of REE and other trace elements within selected minerals represents a potential exploration tool in the area. Iron-oxides (hematite and magnetite), potassium feldspar, albite and accessory minerals have been analysed by laser-ablation inductively-coupled plasma mass spectrometry (LA-ICP-MS) from two prospects (Moola and Princess) and in samples of the Myola Volcanics. The resultant multi-element datasets are compared to other IOCG systems. The results support the presence of sizeable and/or multiple IOCG alteration envelopes within the Middleback Ranges. Significant evolving hydrothermal events resulted in hydrolithic alteration and remobilisation of REE within the Moola Prospect and Myola Volcanics. Replacement of early magnetite by hematite (martitisation) in the Myola Volcanics is accompanied by an influx of REE visible on LA-ICP-MS element maps showing partial martitisation at the grain-scale. It is thus inferred the initial generation of magnetite must have pre-dated introduction of oxidised, REE-enriched hydrothermal fluids into the system. Sulphide assemblages observed within the Moola Prospect are complex and record sequential recrystallisation under evolving fS2 and fO2 conditions. Trace minerals, cycles of brecciation and replacement, and distributions of REE within minerals are similar to that observed in other IOCG domains. The Princess Prospect displays REE distributions in minerals which are dissimilar to the Moola Prospect, the Myola Volcanics and also those reported from other IOCG domains. This is interpreted as indicating that the Moola Prospect and Myola Volcanics in the south of the Middleback Ranges are more prospective IOCG targets.
Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Earth and Environmental Sciences, 2013
APA, Harvard, Vancouver, ISO, and other styles
8

鈴木, 和博, 兼位 諏訪, and 正樹 榎並. "ペリドタイト部分溶融における粒界濃集元素の挙動." 1990. http://hdl.handle.net/2237/12937.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "Incompatible elements"

1

Chang-Chun, Wu, ed. Hybrid and incompatible finite element methods. Boca Raton: Chapman & Hall/CRC, 2005.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Tripkovic, Bosko. Common Sentiment. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198808084.003.0003.

Full text
Abstract:
The chapter analyses the metaethical foundations of the argument from common sentiment. This argument holds that moral emotions of the people in a community indicate the solution to moral problems. Drawing on comparative constitutional practice, the chapter contends that the argument from common sentiment consists of two elements: the emotivist element makes moral judgment dependent on moral feelings, and the relativist element ties these feelings to a specific community. The chapter argues that these elements are incompatible and fail to account for the role of reasoning and reflection in moral judgments. The chapter concludes that the argument from common sentiment is inadequate as an exclusive approach to judicial moral judgment.
APA, Harvard, Vancouver, ISO, and other styles
3

Pian, Theodore H. H., and Chang-Chun Wu. Hybrid and Incompatible Finite Element Methods. Taylor & Francis Group, 2005.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Pian, Theodore H. H., and Chang-Chun Wu. Hybrid and Incompatible Finite Element Methods. Taylor & Francis Group, 2005.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Pian, Theodore H. Hybrid and Incompatible Finite Element Methods. Taylor & Francis Group, 2005.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Pian, Theodore H. H., and Chang-Chun Wu. Hybrid and Incompatible Finite Element Methods. Taylor & Francis Group, 2005.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Pian, Theodore H. H., and Chang-Chun Wu. Hybrid and Incompatible Finite Element Methods. Taylor & Francis Group, 2005.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Pian, Theodore H. H., and Chang-Chun Wu. Hybrid and Incompatible Finite Element Methods. Taylor & Francis Group, 2005.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Stenmark, Mikael. Scientism and Its Rivals. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190462758.003.0003.

Full text
Abstract:
What is scientism and where and why does it differ from its rivals? The second aspect is crucial because, in assessing scientism, we also need to identify its rivals and the border areas between scientism and these rivals. If we reject one we need to know what alternatives there are and where there is overlap. This chapter offers answers to these questions and distinguishes between different types of scientism. It also suggests that liberal naturalism, humanism, social constructionism, religious naturalism, and theism are best understood as rivals to scientism, although that does not mean that they are on all accounts necessarily incompatible with scientism. It merely means that they contain elements that are in serious tension with the epistemology and ontology of scientism or its overall tendency to be deeply suspicious about everything in reality that cannot be described, understood, or explained by the natural sciences.
APA, Harvard, Vancouver, ISO, and other styles
10

Kudlick, Catherine. Social History of Medicine and Disability History. Edited by Michael Rembis, Catherine Kudlick, and Kim E. Nielsen. Oxford University Press, 2018. http://dx.doi.org/10.1093/oxfordhb/9780190234959.013.1.

Full text
Abstract:
Disability history and social history of medicine are two subfields that share many common topics and sources but that approach them very differently. For medical historians, disability takes center stage as a problem that requires fixing, and the “victims” are primarily patients. For disability historians, disability suggests not just the person or practitioner, but also a unique understanding of all the elements, including politics, economics, and culture, that shape relationships for the disabled. Following a brief history of each subfield, two examples are presented—responses to epidemics and the idea of cure—to discuss how scholars can be in more productive conversation. As is demonstrated here, disability is not just a topic to be studied, but rather a tool of analysis. While the distinctive roots and purposes of the two subfields ensure that they will always be fundamentally incompatible, they can, and should, engage in productive conversation.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Incompatible elements"

1

Chauvel, Catherine. "Incompatible Elements." In Encyclopedia of Earth Sciences Series, 1–3. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-39193-9_231-1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Chauvel, Catherine. "Incompatible Elements." In Encyclopedia of Earth Sciences Series, 719–21. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-39312-4_231.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Young, Mitchell, and Rómulo Pinheiro. "The Post-entrepreneurial University: The Case for Resilience in Higher Education." In Towards Resilient Organizations and Societies, 173–93. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-82072-5_7.

Full text
Abstract:
AbstractHistorically speaking, the university has been a highly resilient organizational form; however recent pressures to become entrepreneurial threaten the institutional foundations on which that reliance is based. The chapter first provides conceptual clarity by revisiting what we argue are two distinct schools of thought on the entrepreneurial university. We show how the economic school’s conception intertwines with the rise of New Public Management (NPM) in Europe in the late 1990s and early 2000s, reframing the concept in ways that made it incompatible with resilience thinking. However, we argue that by tying back into ‘lost’ elements of sociological school’s conception, and associating them with concepts from complex systems literature (loose coupling, slack, and requisite diversity), a hybrid model which is both resilient and entrepreneurial can be achieved. We call this the post-entrepreneurial university.
APA, Harvard, Vancouver, ISO, and other styles
4

Zhao-Ping, Jiao, Sheng Yong, and Chang-Chung Wu. "Investigation and Improvement of Rational Displacement Fields of Incompatible Element." In Computational Mechanics ’95, 1620–25. Berlin, Heidelberg: Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-642-79654-8_263.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Glüge, Rainer. "A C1 Incompatible Mode Element Formulation for Strain Gradient Elasticity." In Higher Gradient Materials and Related Generalized Continua, 95–120. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-30406-5_6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Driessen, Brian. "Direct Stiffness-Modification Route to Linear Consistency Between Incompatible Finite Element Meshes." In Integral Methods in Science and Engineering, 75–80. Boston, MA: Birkhäuser Boston, 2002. http://dx.doi.org/10.1007/978-1-4612-0111-3_12.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Chen, Jingxu, Yongchang Cai, and Pengfei Yan. "A New Locking-Free Thick/Thin Shell Element with Incompatible Approximation in a General Orthogonal Curvilinear Coordinate System." In Computational and Experimental Simulations in Engineering, 95–116. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-64690-5_10.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

"Incompatible Elements for the Theory of Elasticity." In Modern Mechanics and Mathematics, 51–88. Chapman and Hall/CRC, 2005. http://dx.doi.org/10.1201/9780203487693.ch3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Norouzi, Nima. "Criminal Policy, Security, and Justice in the Time of COVID-19." In COVID-19 Pandemic Impact on New Economy Development and Societal Change, 58–74. IGI Global, 2022. http://dx.doi.org/10.4018/978-1-6684-3374-4.ch004.

Full text
Abstract:
This study explains the necessary elements in controlling and reducing harmful and incompatible social phenomena with the nature of existence to design correct and challenging social and scientific models using comprehensive approaches to criminal policy and chaos theory.
APA, Harvard, Vancouver, ISO, and other styles
10

Scerri, Eric, and Elena Ghibaudi. "Introduction." In What Is A Chemical Element?, 1–4. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780190933784.003.0001.

Full text
Abstract:
What is a chemical element? The question in the title of this book may sound trivial. The notion of elements is so central to chemistry that one might expect it to have been established once and for all. There is no doubt that the notion of a chemical element is a foundational one. In fact, any chemist—if asked about it—would be able to provide a definition of elements and argue about its connection to the most renowned achievement of chemistry, namely the periodic system. Scientists such as Lavoisier and Mendeleev are familiar to chemists precisely because of their work on the elements. Yet, their own conceptions of elements are substantially different, not to say incompatible. How can this be? The truth is that concepts evolve and the notion of element has a long-standing history: it is rooted far back in the past, in Greek philosophy, and it changed along with the development of our thought and knowledge of the material world. Contributions to the definition of the notion of element have come from both philosophy and science, in the past just as in present times. The list of contributors to the historical debate about the elements starts with Greek philosophers (such as Aristotle and Democritus) and includes philosophers, chemists, epistemologists, and educators, all of whom bring distinct perspectives to the discussion. The development of chemical and physical knowledge has seriously challenged the concept of element. History shows that the main attribute of Greek elements (which was their ...
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Incompatible elements"

1

Facetti-Masulli, J. F., Peter Kump, and Virginia Romero. "INCOMPATIBLE ELEMENTS IN BOTTOM SEDIMENTS OF THE ACARAY DAM RESERVOIR." In RAD Conference. RAD Association, 2019. http://dx.doi.org/10.21175/radproc.2018.39.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Zhou, Limin, Jiawei Liu, and Tim Wu. "Sensitivity of Using Geometrically Incompatible Boundary Elements in Muffler and Silencer Analysis." In SAE 2011 Noise and Vibration Conference and Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2011. http://dx.doi.org/10.4271/2011-01-1504.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Medyanik, S. N., and N. Vlahopoulos. "Applying Incompatible Meshes for Modeling Structural-Acoustic Domains in Energy Finite Element Analysis." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-39085.

Full text
Abstract:
The Energy Finite Element Analysis (EFEA) has been developed for modeling coupled structural-acoustic systems at mid-to-high frequencies when conventional finite element methods are no longer computationally efficient because they require very fine meshes. In standard Finite Element Analysis (FEA) approach, governing differential equations are formulated in terms of displacements which vary harmonically with space. This requires larger numbers of elements at higher frequencies when wavelengths become smaller. In the EFEA, governing differential equations are formulated in terms of energy density that is spatially averaged over a wavelength and time averaged over a period. The resulting solutions vary exponentially with space which makes them smooth and allows for using much coarser meshes. However, current EFEA formulations require exact matching between the meshes at the boundaries between structural and acoustic domains. This creates practical inconveniences in applying the method as well as limits its use to only fully compatible meshes. In this paper, a new formulation is presented that allows for using incompatible meshes in EFEA modeling, when shapes and/or sizes of elements at structural-acoustic interfaces do not match. In the main EFEA procedure, joints formulations between structural and acoustic domains have been changed in order to deal with non-matching elements. In addition, the new Pre-EFEA procedure which allows for automatic searching and formation of the new types of joints is developed for models with incompatible meshes. The new method is tested using a spherical shaped structural-acoustic interface. Results for incompatible meshes are validated by comparing to solutions obtained using regular compatible meshes. The effects of mesh incompatibility on the accuracy of results are discussed.
APA, Harvard, Vancouver, ISO, and other styles
4

Kim, Jong-Sung, Suk-Hyun Lee, and Hyeong Do Kweon. "Investigation on Effect of Analysis Variables on Structural Integrity of the Nuclear Piping Under Beyond Design Basis Earthquake." In ASME 2017 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/pvp2017-66214.

Full text
Abstract:
In this study, effect of analysis variables on structural integrity of nuclear piping under beyond design basis earthquake was investigated via performing dynamic time history seismic analysis. A finite element model of the piping system such as shut-down cooling line was developed combining solid and beam elements. Dynamic time history analysis was performed via finite element elastic plastic stress analysis. Validity of the dynamic time history analysis procedure was verified via comparing with the previous study results. Finally, the effect of analysis variables such as finite element characteristics, transition length between elbow and straight line, fluid effect, etc. was investigated via performing parametric dynamic time history seismic analysis. As a result, it was found that use of the 1st incompatible element is recommended, the transition length is the same as curvature of the elbow, and fluid has to be considered.
APA, Harvard, Vancouver, ISO, and other styles
5

Kim, Seungchan, Kavosh Asadi, Michael Littman, and George Konidaris. "DeepMellow: Removing the Need for a Target Network in Deep Q-Learning." In Twenty-Eighth International Joint Conference on Artificial Intelligence {IJCAI-19}. California: International Joint Conferences on Artificial Intelligence Organization, 2019. http://dx.doi.org/10.24963/ijcai.2019/379.

Full text
Abstract:
Deep Q-Network (DQN) is an algorithm that achieves human-level performance in complex domains like Atari games. One of the important elements of DQN is its use of a target network, which is necessary to stabilize learning. We argue that using a target network is incompatible with online reinforcement learning, and it is possible to achieve faster and more stable learning without a target network when we use Mellowmax, an alternative softmax operator. We derive novel properties of Mellowmax, and empirically show that the combination of DQN and Mellowmax, but without a target network, outperforms DQN with a target network.
APA, Harvard, Vancouver, ISO, and other styles
6

Bliznakov, Plamen I., Jami J. Shah, Dae K. Jeon, and Susan D. Urban. "Design Information System Infrastructure to Support Collaborative Design in a Large Organization." In ASME 1995 Design Engineering Technical Conferences collocated with the ASME 1995 15th International Computers in Engineering Conference and the ASME 1995 9th Annual Engineering Database Symposium. American Society of Mechanical Engineers, 1995. http://dx.doi.org/10.1115/detc1995-0001.

Full text
Abstract:
Abstract In collaborative design in large organizations, many design tasks are executed concurrently by different groups or departments. Many of these tasks influence each other. Collaborative design can be facilitated by an information system that allows each group to post the status of their respective tasks so that other groups can follow their progress, obtain parameters/specifications required in their own tasks, and avoid conflicts/incompatible solutions. This paper examines the functional requirements for such a Design Information System (DIS), considers alternative solutions, and describes an implementation of such a system. The proposed solution includes a hybrid model for the representation of design information at several levels of formalization and granularity. Both Product Data and Design Procedures (processes) are supported through some common pre-defined design elements (primitives), but the system can be extended to include new user-defined elements. The user interface implementation utilizes the World Wide Web and public domain browsers. The system is currently undergoing field testing in an on-going collaborative design project.
APA, Harvard, Vancouver, ISO, and other styles
7

Shahhosseini, Amir, Meng-Hsuan Tien, and Kiran D’Souza. "Analysis and Evaluation of Piecewise Linear Systems With Coulomb Friction Using a Hybrid Symbolic-Numeric Computational Method." In ASME 2021 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/detc2021-69430.

Full text
Abstract:
Abstract A general formulation of piecewise linear systems with discontinuous force elements is provided in this paper. It has been demonstrated that this class of nonlinear systems is of great importance due to their ability to accurately model numerous scientific and engineering phenomena. Additionally, it is shown that this class of nonlinear systems can demonstrate a wide spectrum of nonlinear motions and in fact, the phenomenon of weak chaos is observed in a mechanical assembly for the first time. Despite such importance, efficient methods for fast and accurate evaluation of piecewise linear systems’ responses are lacking and the methods of the literature are either incompatible, very slow, very inaccurate, or bear a combination of the aforementioned deficiencies. To overcome this shortcoming, a novel symbolic-numeric method is presented in this paper that is able to obtain the analytical response of piecewise linear systems with discontinuous elements in an efficient manner. Contrary to other efficient methods that are based on stationary steady state dynamics, this method will not experience failure upon the occurrence of complex motion and is able to capture the entirety of the dynamics.
APA, Harvard, Vancouver, ISO, and other styles
8

Takamatsu, Yusuke. "Synthese als Modus der Prozessualität bei Schubert: Sein spezifisches Wiederholungsprinzip im langsamen Satz." In Jahrestagung der Gesellschaft für Musikforschung 2019. Paderborn und Detmold. Musikwissenschaftliches Seminar der Universität Paderborn und der Hochschule für Musik Detmold, 2020. http://dx.doi.org/10.25366/2020.73.

Full text
Abstract:
In contrast to Beethoven’s music, Schubert’s music has been described through the concept of “a-finality” (Fischer 1983), employing the same elements repeatedly. In this sense, Schubert’s music seems incompatible with the kind of “processual” thinking which is typical for Beethoven’s music. This paper addresses such incompatibility through a comparison of the slow movements of Schubert’s piano sonata D 840 with those of Beethoven’s piano sonata No. 8 (op. 13) which is one of the possible precursors for D 840. The second movement of D 840 features an ABABA structure in which the themes of the first part A and the first part B become integrated into the second part A. This kind of integration differs fundamentally from the design of Beethoven’s op. 13, insofar as the two themes are combined while they also maintain their initial form. This mode of combination suggests Schubert’s own type of synthetic or “processual” thinking.
APA, Harvard, Vancouver, ISO, and other styles
9

El-Khatib, Mohamad H., Arnaud Pothier, and Pierre Blondy. "Design of Packaged RF MEMS Switching Functions on Alumina Substrate." In CANEUS 2006: MNT for Aerospace Applications. ASMEDC, 2006. http://dx.doi.org/10.1115/caneus2006-11055.

Full text
Abstract:
Microwave coaxial switches used in satellites for instance are quite heavy and bulky and thus have an important after-effect on a payload cost. MEMS devices seems to bring a new alternative for compact switching matrix design which requires a large number of switching devices often incompatible with the semiconductor technology in term of dissipated power [3]. Meanwhile, the reliability of MEMS components for space applications still remains today a problem to be solved, in term of design, technology and cost of realization. Hence the component packaging appears today to be a crucial issue for these devices formed starting from mechanically deformable elements which require a stable environment, clean and deprived of moisture to function in an optimal way [1][2]. In spite of the strong integration of these components, standard packaging solutions are not appropriated for MEMS components [4]. This is why dedicated technological solutions must be developed to encapsulate the component or a group of components on the substrate by using simple techniques limited in term of technological steps.
APA, Harvard, Vancouver, ISO, and other styles
10

Beynon, J. H., S. Das, I. C. Howard, and A. Chterenlikht. "Extending the Local Approach to Fracture: Methods for Direct Incorporation of Microstructural Effects Into Finite Element Models of Fracture." In ASME 2002 Pressure Vessels and Piping Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/pvp2002-1213.

Full text
Abstract:
The Local Approach to fracture phenomena has been very successful in helping to transfer information derived from testing one geometry on a material (laboratory specimens) to the prediction of the crack growth performance of another (the structure). At least in its most pervasive manifestations, it depends upon constructing finite element models with a ruling element size that is appropriate for the physical scale of the dominant failure mechanism. Since these are primarily of the order of the material microstructure, there is a consequential very strong mesh gradient towards the region of Local Approach interest. When applied to structures of engineering interest, which can be large, the resultant finite element models become very big, sufficiently so that they cannot be run on many computers, if at all. When there is more than one material scale involved, the situation becomes impossible to resolve with conventional finite elements, except through the use of compromise local finite element sizes that blend the requirements from each micro-scale into a smeared cell at the finite element level. Such models have shown considerable success in predicting the performance of a range of components and structures by a number of research groups. Even so, the method is constrained by the excessive computational costs associated with modeling realistic structures, and by other concerns derived from its smearing of possibly incompatible underlying physical effects. CAFE modeling, the coupling of Cellular Automata at the microstructural scale(s) with finite elements that are scaled only for the strain gradients expected at the macro-scale in the structure, offers a way out of these potential problems. The structural level field quantities, held at the element Gauss points, are modified according to information coming from the Cellular Automata with which each Gauss point is associated. Suitable code representing fracture initiation and propagation at the micro-level generates changes incrementally to the Gauss point field variables, which are then brought to equilibrium by the FE modeler (whenever it is an implicit FE system). The method allows a natural representation of the multiple scale interactions typical of the fracture of low alloy steels in the transition region.
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Incompatible elements"

1

Frijters, Paul. WELLBYs, cost-benefit analyses and the Easterlin Discount. Verlag der Österreichischen Akademie der Wissenschaften, March 2021. http://dx.doi.org/10.1553/populationyearbook2021.deb04.

Full text
Abstract:
The current practise of cost-benefit analysis inWestern countries consists of a collection of various incompatible ideas and methodologies to obtain replicable numbers for the costs and benefits of major public spending plans. This paper describes the main elements of the dominant methodology, which combines consumer and producer surplus, price-taking, government-inputs-as-outputs, hedonic pricing of externalities, and the issue-specific use of partial or general equilibrium thinking. The paper then discusses how that methodology can be augmented and partially replaced by looking at how prospective policies would change the total number of WELLBYs (life satisfaction-adjusted years of life) of the population. The ability of the WELLBY methodology to address complex externalities is illustrated by the Easterlin Discount, which is a proposed reduction factor of 75% on all estimates of private consumption benefits to offset the envy caused in others.
APA, Harvard, Vancouver, ISO, and other styles
2

Brenan, J. M., K. Woods, J. E. Mungall, and R. Weston. Origin of chromitites in the Esker Intrusive Complex, Ring of Fire Intrusive Suite, as revealed by chromite trace element chemistry and simple crystallization models. Natural Resources Canada/CMSS/Information Management, 2021. http://dx.doi.org/10.4095/328981.

Full text
Abstract:
To better constrain the origin of the chromitites associated with the Esker Intrusive Complex (EIC) of the Ring of Fire Intrusive Suite (RoFIS), a total of 50 chromite-bearing samples from the Black Thor, Big Daddy, Blackbird, and Black Label chromite deposits have been analysed for major and trace elements. The samples represent three textural groups, as defined by the relative abundance of cumulate silicate phases and chromite. To provide deposit-specific partition coefficients for modeling, we also report on the results of laboratory experiments to measure olivine- and chromite-melt partitioning of V and Ga, which are two elements readily detectable in the chromites analysed. Comparison of the Cr/Cr+Al and Fe/Fe+Mg of the EIC chromites and compositions from previous experimental studies indicates overlap in Cr/Cr+Al between the natural samples and experiments done at >1400oC, but significant offset of the natural samples to higher Fe/Fe+Mg. This is interpreted to be the result of subsolidus Fe-Mg exchange between chromite and the silicate matrix. However, little change in Cr/Cr+Al from magmatic values, owing to the lack of an exchangeable reservoir for these elements. A comparison of the composition of the EIC chromites and a subset of samples from other tectonic settings reveals a strong similarity to chromites from the similarly-aged Munro Township komatiites. Partition coefficients for V and Ga are consistent with past results in that both elements are compatible in chromite (DV = 2-4; DGa ~ 3), and incompatible in olivine (DV = 0.01-0.14; DGa ~ 0.02), with values for V increasing with decreasing fO2. Simple fractional crystallization models that use these partition coefficients are developed that monitor the change in element behaviour based on the relative proportions of olivine to chromite in the crystallizing assemblage; from 'normal' cotectic proportions involving predominantly olivine, to chromite-only crystallization. Comparison of models to the natural chromite V-Ga array suggests that the overall positive correlation between these two elements is consistent with chromite formed from a Munro Township-like komatiitic magma crystallizing olivine and chromite in 'normal' cotectic proportions, with no evidence of the strong depletion in these elements expected for chromite-only crystallization. The V-Ga array can be explained if the initial magma responsible for chromite formation is slightly reduced with respect to the FMQ oxygen buffer (~FMQ- 0.5), and has assimilated up to ~20% of wall-rock banded iron formation or granodiorite. Despite the evidence for contamination, results indicate that the EIC chromitites crystallized from 'normal' cotectic proportions of olivine to chromite, and therefore no specific causative link is made between contamination and chromitite formation. Instead, the development of near- monomineralic chromite layers likely involves the preferential removal of olivine relative to chromite by physical segregation during magma flow. As suggested for some other chromitite-forming systems, the specific fluid dynamic regime during magma emplacement may therefore be responsible for crystal sorting and chromite accumulation.
APA, Harvard, Vancouver, ISO, and other styles
3

Mohammadi, N., D. Corrigan, A. A. Sappin, and N. Rayner. Evidence for a Neoarchean to earliest-Paleoproterozoic mantle metasomatic event prior to formation of the Mesoproterozoic-age Strange Lake REE deposit, Newfoundland and Labrador, and Quebec, Canada. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/330866.

Full text
Abstract:
A complete suite of bulk major- and trace-elements measurements combined with macroscopic/microscopic observations and mineralogy guided by scanning electron microscope-energy dispersive spectrometry (SEM-EDS) analyses were applied on Nekuashu (2.55 Ga) and Pelland (2.32 Ga) intrusions in northern Canada, near the Strange Lake rare earth elements (REE) deposit, to evaluate their magmatic evolution and possible relations to the Mesoproterozoic Strange Lake Peralkaline Complex (SLPC). These Neoarchean to earliest-Paleoproterozoic intrusions, part of the Core Zone in southeastern Churchill Province, comprise mainly hypersolvus suites, including hornblendite, gabbro, monzogabbro/monzodiorite, monzonite, syenite/augite-syenite, granodiorite, and mafic diabase/dyke. However, the linkage of the suites and their petrogenesis are poorly understood. Geochemical evidence suggests a combination of 'intra-crustal multi-stage differentiation', mainly controlled by fractional crystallization (to generate mafic to felsic suites), and 'accumulation' (to form hornblendite suite) was involved in the evolution history of this system. Our model proposes that hornblendite and mafic to felsic intrusive rocks of both intrusions share a similar basaltic parent magma, generated from melting of a hydrous metasomatized mantle source that triggered an initial REE and incompatible element enrichment that prepared the ground for the subsequent enrichment in the SLPC. Geochemical signature of the hornblendite suite is consistent with a cumulate origin and its formation during the early stages of the magma evolution, however, the remaining suites were mainly controlled by 'continued fractional crystallization' processes, producing more evolved suites: gabbronorite/hornblende-gabbro ? monzogabbro/monzodiorite ? monzonite ? syenite/augite-syenite. In this proposed model, the hydrous mantle-derived basaltic magma was partly solidified to form the mafic suites (gabbronorite/hornblende-gabbro) by early-stage plagioclase-pyroxene-amphibole fractionation in the deep crust while settling of the early crystallized hornblende (+pyroxene) led to the formation of the hornblendite cumulates. The subsequent fractionation of plagioclase, pyroxene, and amphibole from the residual melt produced the more intermediate suites of monzogabbro/monzodiorite. The evolved magma ascended upward into the shallow crust to form monzonite by K-feldspar fractionation. The residual melt then intruded at shallower depth to form syenite/augite-syenite with abundant microcline crystals. The granodiorite suite was probably generated from lower crustal melts associated with the mafic end members. Later mafic diabase/dykes were likely generated by further partial melting of the same source at depth that were injected into the other suites.
APA, Harvard, Vancouver, ISO, and other styles
4

Desbarats, A. J., and J. B. Percival. Hydrogeochemistry of mine tailings from a carbonatite-hosted Nb-REE deposit, Oka, Quebec, Canada. Natural Resources Canada/CMSS/Information Management, 2023. http://dx.doi.org/10.4095/331256.

Full text
Abstract:
Environmental impacts associated with the mining of carbonatite deposits are an emerging concern due to the demand for critical metals. This study investigates the chemistry of tailings seepage at the former Saint Lawrence Columbium mine near Oka, Québec, Canada, which produced pyrochlore concentrate and ferroniobium from a carbonatite-hosted Nb-REE deposit. Its objectives are to characterize the mineralogy of the tailings and their pore water and effluent chemistries. Geochemical mass balance modeling, constrained by aqueous speciation modeling and mineralogy, is then used to identify reactions controlling the chemical evolution of pore water along its flow path through the tailings impoundment. The tailings are composed mainly of REE-enriched calcite (82 wt. %), biotite (12 wt. %) and fluorapatite (4 wt. %). Minor minerals include chlorite, pyrite, sphalerite, molybdenite and unrecovered pyrochlore. Secondary minerals include gypsum, barite and strontianite. Within the unsaturated zone, pore water chemistry is controlled by sulfide oxidation and calcite dissolution with acid neutralization. With increasing depth below the water table, pore water composition reflects gypsum dissolution followed by sulfate reduction and FeS precipitation driven by the oxidation of organic carbon in the tailings. Concomitantly, incongruent dissolution of biotite and chlorite releases K, Mg, Fe, Mn, Ba and F, forming kaolinite and Ca-smectite. Cation exchange reactions further remove Ca from solution, increasing concentrations of Na and K. Fluoride concentrations reach 23 mg/L and 8 mg/L in tailings pore water and effluent, respectively. At a pH of 8.3, Mo is highly mobile and reaches an average concentration of 83 µg/L in tailings effluent. Although U also forms mobile complexes, concentrations do not exceed 16 µg/L due to the low solubility of its pyrochlore host. Adsorption and the low solubility of pyrochlore limit concentrations of Nb to less than 49 µg/L. Cerium, from calcite dissolution, is strongly adsorbed although it reaches concentrations (unfiltered) in excess of 1 mg/L and 100 µg/L in pore water and effluent, respectively. Mine tailings from carbonatite deposits are enriched in a variety of incompatible elements with mineral hosts of varying reactivity. Some of these elements, such as F and Mo, may represent contaminants of concern because of their mobility in alkaline tailings waters.
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Incompatible elements' for particular source types:
Journal articles Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography