Narrow your search
Listing 1 - 9 of 9
Sort by

Book
Közgyujteményi tudományos napok. 1 : Sopron.
Authors: ---
ISBN: 9632004965 9789632004969 Year: 2005 Publisher: Budapest Gondolat

Loading...
Export citation

Choose an application

Bookmark

Abstract


Dissertation
Etude de la synthèse de zéolithe dans l'usine de production de Prayon Engis
Authors: --- --- --- ---
Year: 2018 Publisher: Liège Université de Liège (ULiège)

Loading...
Export citation

Choose an application

Bookmark

Abstract

Le but de ce TFE était d’étudier les conditions de synthèses de la zéolithe X (structure FAU) à Zéoline (usine de production de Prayon) situé à Engis. La fabrication de la zéolithe y est réalisée en mélangeant une solution de silicate de sodium et une solution d’aluminate de sodium. Lors du mélange de ces solutions, on obtient un précipité amorphe qui cristallisera par chauffage en quelques heures. La structure cristallographique se développant dans la matière amorphe, il est important de maitriser sa composition.
Lors de certaines campagnes de production, de la zéolithe A (structure LTA) se formait. L’objectif de ce TFE était de déterminer pourquoi cette phase indésirable se développait dans le cristallisoir. Ce TFE s’est déroulé en trois étapes : recherches bibliographiques sur les mécanismes de synthèse des zéolithes, développement d’un mode opératoire et essais au laboratoire, enfin une étude de l’écoulement dans le cristallisoir a été réalisée.
Il ressort de ce travail qu’il existe deux causes possibles pour l’apparition de zéolithe A dans le cristallisoir :
-Si le cristallisoir contient un résidu de zéolithe A d’un batch précédent (ce qui est le cas car les cristallisoirs ne sont pas lavés), la zéolithe A présente va avoir pour effet de diriger la cristallisation vers la structure LTA au détriment de la structure FAU.
-L’étude de l’écoulement montre que le mélange dans le cristallisoir n’est pas optimal. La réaction de précipitation a lieu en quelques secondes alors que le temps d’homogénéisation est d’environ 40 secondes. Si des hétérogénéités de concentrations locales sont présentes, alors la matière amorphe précipite avec une composition défavorable à la formation de la zéolithe X. The goal of this master’s thesis was to study the synthesis conditions of the type X zeolite (FAU structure) at the Zéoline production plant (owned by Prayon) located at Engis. The production of zeolites is done by mixing a solution of sodium silicate with a solution of aluminum silicate. When the two solutions are mixed, an amorphous precipitate is formed. This precipitate is then heated up to be crystallized. Since the crystallographic structure is formed inside the amorphous phase, its composition must be precise in order to obtain the desired structure.
In some production batches, type A zeolites (LTA structure) have developed. The goal of this master’s thesis was to determine why this unwanted structure could appear inside the reactors. This work was accomplished in three steps: bibliographic researches, developing a scale down version of the industrial process and conducting experiments in the lab, finally a study of the flow inside the reaction vessel was performed.
There are two possibilities that can explain why type A zeolite develops in the reaction vessel:
-If a residue of type A zeolites are present inside the vessel during the crystallization of type X zeolite (which is the case because the vessel is not cleaned between batches), the type A zeolite will influence the formation of the crystalline structures. More type A zeolite will develop instead of the wanted type X.
-The flow study showed that the mixing of the reactants is not optimal. Since the precipitation reaction is faster than the characteristic mixing time, heterogeneities can lead to local concentration gradients which will be present inside the amorphous precipitate. Since the composition is not favorable to type X zeolite, the A type zeolite will develop.


Book
Mittelalterliche lateinische Handschriftenfragmente in Sopron
Authors: ---
ISBN: 9630584085 9789630584081 Year: 2007 Publisher: Budapest Akademiai Kiado

Loading...
Export citation

Choose an application

Bookmark

Abstract


Book
Minderheitenpolitik im "unsichtbaren Entscheidungszentrum" : Der "Nachlass László Fritz" und die Deutschen in Ungarn 1934–1945
Authors: --- ---
ISBN: 9783515105798 Year: 2014 Publisher: Stuttgart Franz Steiner Verlag

Loading...
Export citation

Choose an application

Bookmark

Abstract


Book
Mixed Matrix Membranes
Author:
ISBN: 3039219774 3039219766 Year: 2019 Publisher: MDPI - Multidisciplinary Digital Publishing Institute

Loading...
Export citation

Choose an application

Bookmark

Abstract

Mixed matrix membranes (MMMs) have attracted a large amount of interest in research laboratories worldwide in recent decades, motivated by the gap between a growing interest in developing novel mixed matrix membranes by various research groups and the lack of large-scale implementation. This Special Issue contains six publications dealing with the current opportunities and challenges of mixed matrix membranes development and applications to solve environmental and health challenges of the society of 21st century.

De musealisering van de techniek : de totstandkoming van het Museum voor Techniek en Arbeid in Mannheim, het Nederlands Textielmuseum in Tilburg en het Museum van Wetenschap en Industrie in Manchester in de periode van 1945 tot 1995
Author:
ISBN: 9055890634 Year: 1996 Publisher: Amsterdam : Het Spinhuis,


Book
Deductive Systems in Traditional and Modern Logic
Authors: ---
Year: 2020 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

Loading...
Export citation

Choose an application

Bookmark

Abstract

The book provides a contemporary view on different aspects of the deductive systems in various types of logics including term logics, propositional logics, logics of refutation, non-Fregean logics, higher order logics and arithmetic.

Keywords

Research & information: general --- Mathematics & science --- quine --- logic --- ontology --- multiple conclusion rule --- disjunction property --- metadisjunction --- axiomatizations of arithmetic of natural and integers numbers --- second-order theories --- Peano's axioms --- Wilkosz's axioms --- axioms of integer arithmetic modeled on Peano and Wilkosz axioms --- equivalent axiomatizations --- metalogic --- categoricity --- independence --- consistency --- logic of typical and atypical instances (LTA) --- logic of determination of objects (LDO) --- quasi topology structure (QTS) --- concept --- object --- typical object --- atypical object --- lattice --- filter --- ideal --- discussive logics --- the smallest discussive logic --- discussive operators --- seriality --- accessibility relation --- Kotas' method --- modal logic --- deontic logic --- ontology of situations --- semantics of law --- formal theory of law --- Wittgenstein --- Wolniewicz --- non-Fregean logic --- identity connective --- sentential calculus with identity --- situational semantics --- deduction --- (dual) tableau --- Gentzen system --- deductive refutability --- refutation systems --- hybrid deduction-refutation rules --- derivative hybrid rules --- soundness --- completeness --- natural deduction --- meta-proof theory --- synthetic tableaux --- principle of bivalence --- cut --- first-order theory --- universal axiom --- Peano's axiomatics of natural numbers --- Leśniewski's elementary ontology --- Frege's predication scheme --- Frege's Zahl-Anzahl distinction --- term logic --- Franz Brentano --- Lewis Carroll --- logic trees --- logic diagrams --- paraconsistent logic --- paraconsistency --- Sette's calculus --- the law of explosion --- the principle of ex contradictione sequitur quodlibet --- semantic tree --- distribution --- Aristotle's logic --- syllogistic --- Jan Łukasiewicz --- axiomatic system --- axiomatic refutation --- temporal logic --- intuitionistic logic --- minimal system --- knowledge --- sequent-type calculi --- nonmonotonic logics --- default logic --- rejection systems --- Kripke models --- logics of evidence and truth --- quine --- logic --- ontology --- multiple conclusion rule --- disjunction property --- metadisjunction --- axiomatizations of arithmetic of natural and integers numbers --- second-order theories --- Peano's axioms --- Wilkosz's axioms --- axioms of integer arithmetic modeled on Peano and Wilkosz axioms --- equivalent axiomatizations --- metalogic --- categoricity --- independence --- consistency --- logic of typical and atypical instances (LTA) --- logic of determination of objects (LDO) --- quasi topology structure (QTS) --- concept --- object --- typical object --- atypical object --- lattice --- filter --- ideal --- discussive logics --- the smallest discussive logic --- discussive operators --- seriality --- accessibility relation --- Kotas' method --- modal logic --- deontic logic --- ontology of situations --- semantics of law --- formal theory of law --- Wittgenstein --- Wolniewicz --- non-Fregean logic --- identity connective --- sentential calculus with identity --- situational semantics --- deduction --- (dual) tableau --- Gentzen system --- deductive refutability --- refutation systems --- hybrid deduction-refutation rules --- derivative hybrid rules --- soundness --- completeness --- natural deduction --- meta-proof theory --- synthetic tableaux --- principle of bivalence --- cut --- first-order theory --- universal axiom --- Peano's axiomatics of natural numbers --- Leśniewski's elementary ontology --- Frege's predication scheme --- Frege's Zahl-Anzahl distinction --- term logic --- Franz Brentano --- Lewis Carroll --- logic trees --- logic diagrams --- paraconsistent logic --- paraconsistency --- Sette's calculus --- the law of explosion --- the principle of ex contradictione sequitur quodlibet --- semantic tree --- distribution --- Aristotle's logic --- syllogistic --- Jan Łukasiewicz --- axiomatic system --- axiomatic refutation --- temporal logic --- intuitionistic logic --- minimal system --- knowledge --- sequent-type calculi --- nonmonotonic logics --- default logic --- rejection systems --- Kripke models --- logics of evidence and truth


Book
Deductive Systems in Traditional and Modern Logic
Authors: ---
Year: 2020 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

Loading...
Export citation

Choose an application

Bookmark

Abstract

The book provides a contemporary view on different aspects of the deductive systems in various types of logics including term logics, propositional logics, logics of refutation, non-Fregean logics, higher order logics and arithmetic.

Keywords

Research & information: general --- Mathematics & science --- quine --- logic --- ontology --- multiple conclusion rule --- disjunction property --- metadisjunction --- axiomatizations of arithmetic of natural and integers numbers --- second-order theories --- Peano’s axioms --- Wilkosz’s axioms --- axioms of integer arithmetic modeled on Peano and Wilkosz axioms --- equivalent axiomatizations --- metalogic --- categoricity --- independence --- consistency --- logic of typical and atypical instances (LTA) --- logic of determination of objects (LDO) --- quasi topology structure (QTS) --- concept --- object --- typical object --- atypical object --- lattice --- filter --- ideal --- discussive logics --- the smallest discussive logic --- discussive operators --- seriality --- accessibility relation --- Kotas’ method --- modal logic --- deontic logic --- ontology of situations --- semantics of law --- formal theory of law --- Wittgenstein --- Wolniewicz --- non-Fregean logic --- identity connective --- sentential calculus with identity --- situational semantics --- deduction --- (dual) tableau --- Gentzen system --- deductive refutability --- refutation systems --- hybrid deduction–refutation rules --- derivative hybrid rules --- soundness --- completeness --- natural deduction --- meta-proof theory --- synthetic tableaux --- principle of bivalence --- cut --- first-order theory --- universal axiom --- Peano’s axiomatics of natural numbers --- Leśniewski’s elementary ontology --- Frege’s predication scheme --- Frege’s Zahl-Anzahl distinction --- term logic --- Franz Brentano --- Lewis Carroll --- logic trees --- logic diagrams --- paraconsistent logic --- paraconsistency --- Sette’s calculus --- the law of explosion --- the principle of ex contradictione sequitur quodlibet --- semantic tree --- distribution --- Aristotle’s logic --- syllogistic --- Jan Łukasiewicz --- axiomatic system --- axiomatic refutation --- temporal logic --- intuitionistic logic --- minimal system --- knowledge --- sequent-type calculi --- nonmonotonic logics --- default logic --- rejection systems --- Kripke models --- logics of evidence and truth --- n/a --- Peano's axioms --- Wilkosz's axioms --- Kotas' method --- hybrid deduction-refutation rules --- Peano's axiomatics of natural numbers --- Leśniewski's elementary ontology --- Frege's predication scheme --- Frege's Zahl-Anzahl distinction --- Sette's calculus --- Aristotle's logic


Book
Deductive Systems in Traditional and Modern Logic
Authors: ---
Year: 2020 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

Loading...
Export citation

Choose an application

Bookmark

Abstract

The book provides a contemporary view on different aspects of the deductive systems in various types of logics including term logics, propositional logics, logics of refutation, non-Fregean logics, higher order logics and arithmetic.

Keywords

quine --- logic --- ontology --- multiple conclusion rule --- disjunction property --- metadisjunction --- axiomatizations of arithmetic of natural and integers numbers --- second-order theories --- Peano’s axioms --- Wilkosz’s axioms --- axioms of integer arithmetic modeled on Peano and Wilkosz axioms --- equivalent axiomatizations --- metalogic --- categoricity --- independence --- consistency --- logic of typical and atypical instances (LTA) --- logic of determination of objects (LDO) --- quasi topology structure (QTS) --- concept --- object --- typical object --- atypical object --- lattice --- filter --- ideal --- discussive logics --- the smallest discussive logic --- discussive operators --- seriality --- accessibility relation --- Kotas’ method --- modal logic --- deontic logic --- ontology of situations --- semantics of law --- formal theory of law --- Wittgenstein --- Wolniewicz --- non-Fregean logic --- identity connective --- sentential calculus with identity --- situational semantics --- deduction --- (dual) tableau --- Gentzen system --- deductive refutability --- refutation systems --- hybrid deduction–refutation rules --- derivative hybrid rules --- soundness --- completeness --- natural deduction --- meta-proof theory --- synthetic tableaux --- principle of bivalence --- cut --- first-order theory --- universal axiom --- Peano’s axiomatics of natural numbers --- Leśniewski’s elementary ontology --- Frege’s predication scheme --- Frege’s Zahl-Anzahl distinction --- term logic --- Franz Brentano --- Lewis Carroll --- logic trees --- logic diagrams --- paraconsistent logic --- paraconsistency --- Sette’s calculus --- the law of explosion --- the principle of ex contradictione sequitur quodlibet --- semantic tree --- distribution --- Aristotle’s logic --- syllogistic --- Jan Łukasiewicz --- axiomatic system --- axiomatic refutation --- temporal logic --- intuitionistic logic --- minimal system --- knowledge --- sequent-type calculi --- nonmonotonic logics --- default logic --- rejection systems --- Kripke models --- logics of evidence and truth --- n/a --- Peano's axioms --- Wilkosz's axioms --- Kotas' method --- hybrid deduction-refutation rules --- Peano's axiomatics of natural numbers --- Leśniewski's elementary ontology --- Frege's predication scheme --- Frege's Zahl-Anzahl distinction --- Sette's calculus --- Aristotle's logic

Listing 1 - 9 of 9
Sort by