TERMIUM Plus^®

Record 1,  Textual support,  English

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Focused ion neam(FIB) is a setup similar to a scanning electron beam, but with a beam of ions instead. Currently, the most used is the gallium ion beam powered by liquid metal ion sources(LMIS).  4, record 1, English, - focused%20ion%20beam

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The focussed ion beam enables access to sub-surface structures, across electrode interfaces, or within integrated circuits.  3, record 1, English, - focused%20ion%20beam

Record 1,  Textual support,  French

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Le faisceau ionique focalisé permet d'obtenir une surface d'analyse très plane et dénuée de déformations mécaniques. De plus, la différence qui existe entre les taux de gravure des matériaux induit un contraste de nature topographique entre les phases. La topographie est ensuite mesurée à l'aide d'un microscope à force atomique et les images obtenues permettent d'analyser avec précision la géométrie autour de la ligne triphasée.  2, record 1, French, - faisceau%20d%27ions%20focalis%C3%A9

Record 1,  Textual support,  Spanish

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Un haz de iones enfocados [...] es un sistema que se basa en el disparo de iones de galio hacia una superficie a una velocidad muy alta con el propósito básico de cortar o agregar material a una superficie o un área de dimensiones en la escala nanométrica.  2, record 1, Spanish, - haz%20de%20iones%20concentrado

Record 2,  Textual support,  English

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... the range in concentration of hydrogen ion, metal ion, or other species over which the eye is able to perceive a variation in hue, colour intensity, fluorescence, or other property of a visual indicator arising from the varying ration of the two relevant forms of the indicator. The concentration(e. g. pH).  1, record 2, English, - transition%20interval

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For an oxidation-reduction indicator the transition interval is the corresponding range in oxidation-reduction potential.  1, record 2, English, - transition%20interval

Record 2,  Textual support,  French

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[...] domaine de concentration d'ions hydrogènes, d'ions métalliques ou d'autres espèces dans lequel l'œil est capable de percevoir la variation de teinte, l'intensité de couleur, de fluorescence ou d'une autre propriété d'un indicateur visuel, variation provoquée par une variation des rapports de concentration des deux formes de l'indicateur. Le domaine s'exprime généralement en logarithme décimal négatif de la concentration (par exemple pH).  1, record 2, French, - intervalle%20de%20virage%20d%27un%20indicateur

Record number: 2, Textual support number: 1 OBS

Pour un indicateur d'oxydoréduction, l'intervalle de virage est une différence de potentiels d'oxydoréduction.  1, record 2, French, - intervalle%20de%20virage%20d%27un%20indicateur

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

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A substance used in small proportion, that augments the rate of a chemical reaction, and in theory remains unchanged chemically at the end of the reaction.  3, record 3, English, - catalyst

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catalyst: term and definition standardized by ISO.  4, record 3, English, - catalyst

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Catalysts in living systems are called "enzymes."  5, record 3, English, - catalyst

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catalyst: term officially approved by the Lexicon Project Committee (New Brunswick).  4, record 3, English, - catalyst

Record number: 3, Textual support number: 1 PHR

bimetallic cluster, colloidal, complex, heterogeneous acidic, iron, man-made, metallic hydrogenation, organic, positive(metal ion), Raney nickel, solid catalyst  4, record 3, English, - catalyst

Record number: 3, Textual support number: 2 PHR

pore distribution of a catalyst, reactivation of a catalyst  4, record 3, English, - catalyst

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 DEF

Substance qui, utilisée en faible proportion, augmente la vitesse d'une réaction chimique et qui, théoriquement, reste chimiquement inchangée à la fin de la réaction.  2, record 3, French, - catalyseur

Record number: 3, Textual support number: 1 OBS

catalyseur : terme et définition normalisés par l'ISO.  3, record 3, French, - catalyseur

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Il n'existe qu'un petit nombre de catalyseurs capables d'effectuer dans des conditions optimales une réaction donnée. Le catalyseur réel adapté à un procédé particulier est le plus souvent un solide complexe. Il comporte une phase active qui, pour développer une surface maximale, est déposée sur un support, parfois à dose très faible s'il s'agit d'éléments coûteux comme les métaux précieux. Cependant, certains catalyseurs dits massiques sont uniquement constitués de phase(s) active(s) [...] [que l'on peut classer en trois grandes familles] : les métaux; les semi-conducteurs, oxydes, sulfures ou autres ions supportés; les oxydes isolants, acides ou basiques.  4, record 3, French, - catalyseur

Record number: 3, Textual support number: 3 OBS

catalyseur : terme uniformisé par le Comité du projet de lexiques (Nouveau-Brunswick).  3, record 3, French, - catalyseur

Record number: 3, Textual support number: 1 PHR

catalyseur au fer, catalyseur massique, catalyseur solide  3, record 3, French, - catalyseur

Record number: 3, Textual support number: 2 PHR

poison de catalyseur  3, record 3, French, - catalyseur

Record 3,  Textual support,  Spanish

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Sustancia que usada en pequeñas cantidades hace aumentar la velocidad de una reacción química, y en teoría, permanece químicamente igual al final de la reacción.  1, record 3, Spanish, - catalizador

Record 4,  Textual support,  English

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Field ion microscopy is a technique for observing individual atoms, and is capable of yielding pictures showing the surface structure of a metal in atomic detail.  3, record 4, English, - field%20ion%20microscopy

Record 4,  Textual support,  French

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Des sources d'ions très focalisées sont également en cours d'étude, suivant le principe de la microscopie ionique de champ.  1, record 4, French, - microscopie%20ionique%20de%20champ

Record 4,  Textual support,  Spanish

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Tema XIV: Técnicas de sonda de campo y microscopías de sonda de barrido. Introducción: Procesos fundamentales aprovechados por las técnicas de sonda de campo. Principales técnicas y aplicaciones de las mismas. Microscopía de iones en campo (FIM) y análisis con sonda atómica.  1, record 4, Spanish, - microscop%C3%ADa%20de%20iones%20en%20campo

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FIM: según su sigla en inglés, de "field ion microscopy".  2, record 4, Spanish, - microscop%C3%ADa%20de%20iones%20en%20campo

Record 5,  Textual support,  English

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... the scanning ion-conductance microscope(SICM)... scans a sample not with a metal or diamond tip but with a glass micropipette containing a tiny electrode. The workers immerse the sample and the pipette in a bath of electrolyte(such as a salt solution) and establish a voltage difference between the electrode within the pipette and another electrode in the bath. A current of ions tends to flow between the electrodes by way of the pipette opening, but when the pipette approaches the surface of the sample, the current weakens. It disappears altogether when the scanned pipette touches the sample, which blocks the opening. Equipped with a feedback mechanism that maintains a constant ion current through the pipette opening, the SICM can profile a sample's topography. The fineness of the pipette does limit the SICM's resolution to about. 2 micron(10 nanometers may eventually be feasible).  3, record 5, English, - scanning%20ion%2Dconductance%20microscope

Record number: 5, Textual support number: 1 OBS

The device is therefore best suited to more specialized functions - studying a living cell’s electrical behavior, for example. When a cell is stimulated, so-called ion channels in its membrane open and close, allowing tiny currents of ions to pass. Hansma hopes to detect individual ion channels and study their behavior once the SICM’s resolution has been improved.  3, record 5, English, - scanning%20ion%2Dconductance%20microscope

Record 5,  Textual support,  French

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Il est vrai que le microscope à effet tunnel et son cousin le microscope à conductance ionique (SCIM) ont des applications potentiellement très importantes en biologie.  3, record 5, French, - microscope%20%C3%A0%20conductance%20ionique

Record 5,  Textual support,  Spanish

Record 6,  Textual support,  English

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An endohedral fullerene with an enclosed metal ion or ions.  1, record 6, English, - metallofullerene

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metallofullerene: term describing a specific type of carbon nanoparticle.  2, record 6, English, - metallofullerene

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metallofullerene: term and definition standardized by the International Organization for Standardization (ISO).  2, record 6, English, - metallofullerene

Record 6,  Textual support,  French

Record number: 6, Textual support number: 1 DEF

Fullerène endoédrique enfermant un ou plusieurs ions métalliques.  1, record 6, French, - m%C3%A9tallofuller%C3%A8ne

Record number: 6, Textual support number: 1 OBS

métallofullerène : terme décrivant un type spécifique de nanoparticule carbonée.  2, record 6, French, - m%C3%A9tallofuller%C3%A8ne

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métallofullerène : terme et définition normalisés par l'Organisation internationale de normalisation (ISO).  2, record 6, French, - m%C3%A9tallofuller%C3%A8ne

Record 6,  Textual support,  Spanish

Record 7,  Textual support,  English

Record number: 7, Textual support number: 1 DEF

A noble metal(such as platinum) of large surface area covered with hydrogen gas in a solution of hydrogen ion saturated with hydrogen gas; metal is used in a foil form and is welded to a wire sealed in the bottom of a hollow glass tube, which is partially filled with mercury; used as a standard electrode with a potential of zero to measure hydrogen ion activity.  3, record 7, English, - hydrogen%20electrode

Record 7,  Textual support,  French

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[...] une pile redox [est] formée de deux électrodes à hydrogène réunies par une jonction liquide (solution KC1). L'une est une électrode normale à hydrogène, électrode de référence [...]. L'autre, électrode indicatrice, est aussi une électrode à hydrogène, mais dont la solution est de pH inconnu, à mesurer. [...] on a convenu que l'électrode normale à hydrogène est équipotentielle; d'où E⁰ = 0 [...].  3, record 7, French, - %C3%A9lectrode%20%C3%A0%20hydrog%C3%A8ne

Record 7,  Textual support,  Spanish

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Electrodo constituido por una lámina de platino en una atmósfera de hidrógeno, sumergida parcialmente en una disolución de iones H+ saturada de hidrógeno gaseoso.  1, record 7, Spanish, - electrodo%20de%20hidr%C3%B3geno

Record 8,  Textual support,  English

Record number: 8, Textual support number: 1 DEF

A microscope that is similar to the electron microscope but uses protons instead of electrons as the charged particles.  1, record 8, English, - proton%20microscope

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The proton-scattering microscope. This instrument uses a beam of protons from an ion source or gun. The beam is focussed and accelerated onto a crystal of a metal such as copper or tungsten, which serves as the target. The pattern of scattered protons is recorded on a fluorescent screen; the blocking patterns provide information on the orientation of the crystals.  2, record 8, English, - proton%20microscope

Record 8,  Textual support,  French

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Dispositif d'optique électronique analogue au microscope électronique, mais dans lequel les porteurs électrisés sont des protons.  1, record 8, French, - microscope%20protonique

Record 8,  Textual support,  Spanish

Record 10,  Textual support,  English

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The breaking off of an ion, such as a hydrogen ion or metal ion, from a molecule so that a negative ion remains in equilibrium.  1, record 10, English, - cationotrophy

Record 10,  Textual support,  French

Record 10,  Textual support,  Spanish

Record 11,  Textual support,  English

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Process for the treatment of used ion cartridges... stored in a cartridge storage pool and constituted by a hollow internal metal structure... equipped with a cover... and making it possible to transport a cartridge from a pool to a cell... characterized in that it consists of performing the following operations : a) transfer of the cartridge from the storage pool to the discharge pool b) placing the cartridge to be conditioned within the transfer casket c) decontamination of the transfer casket in a decontamination cell d) transfer of the casket to a treatment cell... and e) extraction by suction means... of the ion exchange resins contained in the cartridge.  1, record 11, English, - discharge%20pool

Record 11,  Textual support,  French

Record number: 11, Textual support number: 1 CONT

L'utilisation d'absorbants neutroniques à base d'éléments ayant une forte section efficace de capture neutronique est parfois nécessaire pour compléter les autres méthodes de contrôle du risque de criticité. Il s'agira par exemple des matériaux borés placés dans les structures internes des emballages de transport de combustibles irradiés [ces emballages, une fois chargés des assemblages combustibles (12 assemblages dans le cas du combustible REP [réacteur à eau pressurisée]), doivent rester sous-critiques lors de leur immersion dans l'eau non borée de la piscine de déchargement] ou bien du gadolinium introduit dans le dissolveur de l’usine de retraitement pour traiter du combustible plus enrichi que le combustible de référence retenu pour le dimensionnement de cet appareil.  1, record 11, French, - piscine%20de%20d%C3%A9chargement

Record 11,  Textual support,  Spanish

Record 12,  Textual support,  English

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A metallic complex in which the activity of the metal ion is suppressed by chelation. [Definition standardized by ISO. ]  3, record 12, English, - chelate

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A molecular entity in which there is chelation (and the corresponding chemical species) is called a chelate. The terms bidentate, terdentate ... multidentate are used to indicate the number of potential binding sites in the ligand, at least two of which must be used by the ligand in forming a chelate. For example, the bidentate ethylenediamine form a chelate with Cuⁱ in which both nitrogen atoms of ethylenediamine are bonded to copper. (The use of the term is often restricted to metallic central atoms.)  4, record 12, English, - chelate

Record number: 12, Textual support number: 2 OBS

chelate: term standardized by ISO.  5, record 12, English, - chelate

Record 12,  Textual support,  French

Record number: 12, Textual support number: 1 DEF

Complexe métallique où l'activité de l'ion métal est dissimulée par chélation. [Définition normalisée par l'ISO].  3, record 12, French, - ch%C3%A9late

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Une entité moléculaire comportant une chélation, ainsi que l'espèce chimique correspondante, est appelée chélate. Les expressions bicoordinante, tricoordinante et multicoordinante sont utilisées pour indiquer le nombre de sites liants potentiels du coordinat dont au moins deux doivent être utilisés pour former un chélate. Par exemple, l'éthylènediamine bicoordinante forme avec le Cu^I un chélate dans lequel deux atomes d'azote de l'éthylènediamine sont liés au cuivre. On limite souvent l'utilisation de cette expression aux cas où l'atome central est un atome métallique.  4, record 12, French, - ch%C3%A9late

Record number: 12, Textual support number: 2 OBS

chélate : terme normalisé par l'ISO.  5, record 12, French, - ch%C3%A9late

Record 12,  Textual support,  Spanish

Record number: 12, Textual support number: 1 DEF

Tipo de compuesto de coordinación en el cual un átomo central, generalmente un metal, se une por enlaces covalentes a uno o más átomos distintos de una o más moléculas distintas o iones, formándose anillos heterocíclicos con el átomo central como parte de cada anillo.  2, record 12, Spanish, - quelato

Record 13,  Textual support,  English

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Properties : Light yellow pigment,... rust-inhibiting and corrosion-resistant properties,.... Use :Metal protective coatings to prevent corrosion, colorant in polyvinyl chloride resins; pyrotechnics, sulfate ion control in electroplating baths.  2, record 13, English, - strontium%20chromate

Record number: 13, Textual support number: 2 OBS

Chemical formula: SrCrO₄  2, record 13, English, - strontium%20chromate

Record 13,  Textual support,  French

Record number: 13, Textual support number: 1 DEF

Pigment jaune. Pigment yellow 32 - Cl 77 839. Utilisation : primaires pour électrophorèse, primaires anticorrosion. [Définition normalisée par l'AFNOR et reproduite avec son autorisation.]  2, record 13, French, - chromate%20de%20strontium

Record number: 13, Textual support number: 1 OBS

Formule chimique : SrCrO₄  3, record 13, French, - chromate%20de%20strontium

Record number: 13, Textual support number: 2 OBS

chromate de strontium : terme normalisé par l'AFNOR.  4, record 13, French, - chromate%20de%20strontium

Record 13,  Textual support,  Spanish

Record 14,  Textual support,  English

Record number: 14, Textual support number: 1 CONT

The analytical electron microscope(AEM) is based on a conventional 200 keV transmission electron microscope(TEM) which has been augmented to include the functions of a scanning transmission electron microscope(STEM) and the scanning electron microscope(SEM). Since the electrons must penetrate through the specimen, the specimen dimensions must be no greater than 1 micrometer thick, and preferably in the range of 100 nm. Bulk specimens may be thinned to this range by a combination of mechanical, chemical, and ion sputtering techniques, all of which are available in the microanalysis laboratory. As an imaging tool, the AEM is capable of 0. 3 nm spatial resolution in the TEM mode, 1 nm resolution in the STEM mode, and 3 nm resolution in the SEM mode. Elemental microanalysis is carried out by means of energy dispersive x-ray spectrometry(EDS) and electron energy loss spectrometry(EELS), which together provide sensitivity to all elements with atomic number > 2. Quantitative analysis is carried out by means of a relative sensitivity factor method based on glass, mineral, and metal alloy standards.  2, record 14, English, - analytical%20electron%20microscope

Record 14,  Textual support,  French

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Le Centre [London Centre for Nanotechnology (ou LCN]), abritera 200 m² de salles blanches ainsi qu'une gamme complète d'outils de caractérisation à l'échelle nanométrique. Un de ces outils sera un puissant microscope électronique analytique (ou AEM pour «Analytical Electron Microscope») d'une résolution de 1,4. Selon «Imperial College», il n'existe que trois microscopes de ce type au monde (Europe et Etats-Unis). Ses capacités d'analyse des matériaux donneront des informations sur la composition locale, les liaisons et l'état électronique des atomes. Les chercheurs du LCN espèrent que cet outil leur permettra de pénétrer les relations complexes qui existent entre l'arrangement atomique d'un matériau et les propriétés et les performances d'un dispositif fabriqué à partir de celui-ci. Les projets de recherche menés grâce à ce microscope concerneront les piles à combustible, les nanostructures magnétiques, les revêtements intelligents, les points quantiques semiconducteurs et la recherche biomédicale.  2, record 14, French, - microscope%20%C3%A9lectronique%20analytique

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Record 15,  Textual support,  English

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The protein moiety of an enzyme without the cofactor necessary for catalysis. The cofactor may be a metal ion, an organic molecule, or a combination of both.  1, record 15, English, - apoenzyme

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Many enzymes require coenzymes to exhibit their catalytic activities. Generally, the binding force between apoenzyme and coenzyme is relatively weak, and reversible separation to give the protein moiety (apoenzyme) and coenzyme can occur easily. Recently, by utilizing this characteristic, purification of apoenzymes has been attempted using coenzymes bound to a water-insoluble carrier... and several reports on the immobilization of coenzymes have been published.  2, record 15, English, - apoenzyme

Record 15,  Textual support,  French

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Un des deux éléments constitutifs des enzymes. C'est la partie activante, protéique, responsable de la spécificité envers le substrat.  2, record 15, French, - apoenzyme

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Chez les enzymes de type hétéroprotéique, la fixation du substrat se fait sur la partie protéique, l'apoenzyme, tandis que la catalyse de la réaction est le fait de la partie non protéique, le groupement prosthétique ou le cosubstrat. La partie «apoenzyme» de la molécule enzymatique qui porte le site de fixation du substrat est donc d'abord responsable de la spécificité quant au substrat de l'enzyme. Mais elle peut également intervenir dans la spécificité de réaction et induire un type particulier de réaction. C'est ainsi, par exemple, que dans le métabolisme des acides aminés, le phosphate de pyridoxal peut, suivant l'apoenzyme avec laquelle il se combine, catalyser des réactions soit de transamination, soit de décarboxylation, soit de désamination, soit de racémisation.  3, record 15, French, - apoenzyme

Record 15,  Textual support,  Spanish

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Proteína de una enzima que requiere un cofactor para ejercer su función.  2, record 15, Spanish, - apoenzima

Record 16,  Textual support,  English

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Ion plating uses concurrent or periodic energetic particle bombardment of the depositing film to modify and control the composition and properties of the deposited film and to improve surface coverage and adhesion. The depositing material may be vaporized by evaporation, sputtering, arc erosion or other vaporization source.  2, record 16, English, - ion%20plating

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Ion plating is used to deposit hard coatings of compound materials, adherent metal coatings, optical coatings with high densities and conformal coatings on complex surfaces.  2, record 16, English, - ion%20plating

Record 16,  Textual support,  French

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Les dépôts ioniques regroupent différentes techniques de dépôts sous vide dans lesquelles le matériau à déposer est mis en phase vapeur en présence d'une décharge électrique, le substrat jouant le rôle de cathode.  3, record 16, French, - d%C3%A9p%C3%B4t%20ionique

Record 16,  Textual support,  Spanish

Record 17,  Textual support,  English

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Phytochelatins(PCs) are intracellular metal ligands produced by plants, fungi and algae in response to increase of metals in their environment. They are small metal-binding polypeptides, enzymatically produced from glutathione to form amino acids sequences(g-Glu-Cys) n-Gly where n=2 to 11. They sequester metals inside the cells by binding them through thiol coordination and by this way, limit damage to metabolic processes in reducing the cytotoxic free metal ion.  2, record 17, English, - phytochelatin

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Hope for the phytoextraction of mercury has been inspired by recent discoveries showing some plants produce specific peptides, termed phytochelatins, that bind and detoxify hazardous metals such as cadmium.  3, record 17, English, - phytochelatin

Record 17,  Textual support,  French

Record number: 17, Textual support number: 1 DEF

Peptide de faible poids moléculaire riche en cystéine.  2, record 17, French, - phytoch%C3%A9latine

Record number: 17, Textual support number: 1 OBS

[Ce peptide] se lie fortement à des ions métalliques tels que le Cadmium (Cd) et le Cuivre (Cu).  2, record 17, French, - phytoch%C3%A9latine

Record 17,  Textual support,  Spanish

Record 18,  Textual support,  English

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To form a complex chemical compound in which an ion, usually metallic, is bound into a stable ring structure.  1, record 18, English, - chelate

Record number: 18, Textual support number: 1 OBS

[Chelation is the] process of reversible binding of a ligand, the chelator or chelating agent, to a metal ion, forming a metal complex, the chelate.  2, record 18, English, - chelate

Record 18,  Textual support,  French

Record number: 18, Textual support number: 1 DEF

Fixation de cations (le plus souvent métalliques) par interactions électrostatiques.  2, record 18, French, - ch%C3%A9later

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Dans ce but on peut chélater les polluants avec des ligands spécifiques qui diminuent la quantité d'ions libres.  3, record 18, French, - ch%C3%A9later

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[La chélation est un] processus physico-chimique de fixation d'ions positifs multivalents (calcium, plomb, mercure, etc.) par des corps dits chélateurs ou agents chélateurs.  4, record 18, French, - ch%C3%A9later

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Record 19,  Textual support,  English

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Family of molecules that can form several bonds to a metal ion, in order to deactivate them.  5, record 19, English, - demineralising%20agent

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Chelation(from Greek, chelè, meaning claw) is the process of reversible binding(complexation) of a ligand-the chelant, chelator, chelating agent, sequestering agent, or complexing agent-to a metal ion, forming a metal complex, the chelate. The term is generally reserved for complexes in which the metal ion is bound to two or more atoms of the chelating agent, although the bonds may be any combination of coordination or ionic bonds.  4, record 19, English, - demineralising%20agent

Record number: 19, Textual support number: 2 CONT

Further experiments showed that by adding a demineralising agent (EDTA) to the soil, plants could accumulate a larger quantity of metals. Testing also demonstrated that the demineralising agent facilitated the migration of metals towards the top of the plant (stems and leaves).  1, record 19, English, - demineralising%20agent

Record 19,  Textual support,  French

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Se dit d'un corps qui a la propriété de se lier fortement et de manière plus ou moins spécifique à un ion positif bivalent et trivalent (notamment métallique) avec lequel il forme un composé (ou chélate n. m.) dans lequel l'atome central est lié aux atomes voisins par au moins deux liaisons en formant une structure annulaire.  2, record 19, French, - agent%20d%C3%A9min%C3%A9ralisant

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D'autres expériences ont démontré que l'ajout d'un agent déminéralisant (EDTA) dans les sols permettait aux plantes d'accumuler une quantité supérieure de métaux. Elles ont aussi prouvé que l'agent déminéralisant facilitait la progression des métaux vers les parties aériennes de la plantes (tiges et feuilles).  6, record 19, French, - agent%20d%C3%A9min%C3%A9ralisant

Record number: 19, Textual support number: 2 CONT

La chélation (prononcer kélassion, du grec khêlê : « pince ») est un processus physico-chimique au cours duquel est formé un complexe, le chélate, entre un complexant, dit chélateur (ou chélatant), et un métal, alors complexé, dit chélaté.  5, record 19, French, - agent%20d%C3%A9min%C3%A9ralisant

Record 19,  Textual support,  Spanish

Record 20,  Textual support,  English

Record number: 20, Textual support number: 1 DEF

A molecule, ion, or atom that is attached to the central atom of a coordination compound, a chelate, or other complex.  2, record 20, English, - ligand

Record number: 20, Textual support number: 1 CONT

The Lewis Theory has been used extensively in the interpretation of the formation of coordination compounds in which the ligand is the base and the metal ion or ligand acceptor is the acid.  3, record 20, English, - ligand

Record number: 20, Textual support number: 1 OBS

Apart from its conventional usage in complexometry and with chelating ion exchange columns the word ligand is employed in affinity chromatography with reference to the biospecific material which is coupled to the polymetric carrier to form the biospecific column.  4, record 20, English, - ligand

Record 20,  Textual support,  French

Record number: 20, Textual support number: 1 DEF

Atome, ion ou molécule associé à l'atome central dans un complexe.  3, record 20, French, - ligand

Record number: 20, Textual support number: 1 CONT

Nous désignons par «coordinat» un atome, ou groupement d'atomes, chargé ou non, intervenant dans la formation de la liaison coordinative.  4, record 20, French, - ligand

Record number: 20, Textual support number: 1 PHR

Ligand ambidentate, hexadentate, monodentate, multidentate, polydentate, tétradentate, tridentate, unidentate; ligand dur, mou; ligand axial, donneur, pontant.  5, record 20, French, - ligand

Record number: 20, Textual support number: 2 PHR

Métal-ligand.  5, record 20, French, - ligand

Record 20,  Textual support,  Spanish

Record 21,  Textual support,  English

Record number: 21, Textual support number: 1 DEF

The transforming of a metal cation into a new ion by the action of molecules containing at least one electron-donor group. [Definition standardized by ISO. ]  2, record 21, English, - complexing

Record number: 21, Textual support number: 1 CONT

Fluorine expands the temperature interval between liquidus and solidus, lowers viscosity of magmas, and, through complexing, assists in the transport of elements, including those of economic interest.  3, record 21, English, - complexing

Record number: 21, Textual support number: 1 OBS

complexing: term standardized by ISO.  4, record 21, English, - complexing

Record number: 21, Textual support number: 1 PHR

Chemical complexing.  3, record 21, English, - complexing

Record 21,  Textual support,  French

Record number: 21, Textual support number: 1 DEF

Transformation d'un cation métallique en un ion nouveau, par l'intervention de molécules comportant au moins un groupement donneur d'électrons. [Définition normalisée par l'ISO.]  3, record 21, French, - complexion

Record number: 21, Textual support number: 1 CONT

La présence de fluor accroît l'intervalle de température entre le liquidus et le solidus, réduit la viscosité des magmas et, par complexation, facilite le transport des éléments notamment ceux d'intérêt économique.  4, record 21, French, - complexion

Record number: 21, Textual support number: 1 OBS

complexion : terme normalisé par l'ISO et l'AFNOR.  5, record 21, French, - complexion

Record number: 21, Textual support number: 1 PHR

Complexation chimique.  4, record 21, French, - complexion

Record 21,  Textual support,  Spanish

Record 22,  Textual support,  English

Record number: 22, Textual support number: 1 DEF

A solution made up of a solvent and an ionically dissociated solute [which] will conduct electricity [and of which the] ions can be separated ... by deposition on an electrically charged electrode.  3, record 22, English, - electrolytic%20solution

Record number: 22, Textual support number: 1 CONT

anion: A negatively charged ion in an electrolyte solution, attracted to the anode under the influence of a difference in electrical potential.  4, record 22, English, - electrolytic%20solution

Record number: 22, Textual support number: 2 CONT

In electroplating, the metal to be plated is used as the anode and the electrolytic solution contains an ion derived from that metal.... Materials : Chemicals. Electrolyte solution(200 g CuSO₄·5H₂O + 25. 0 mL concentrated H₂SO₄ solution in enough distilled or deionized water to make l. 00 L of solution).  5, record 22, English, - electrolytic%20solution

Record 22,  Textual support,  French

Record number: 22, Textual support number: 1 CONT

Une solution idéale est définie comme un mélange idéal. Dans de nombreux cas, une solution diluée, dans laquelle la fraction molaire X2 du soluté est comprise entre 0 et une valeur faible, se comporte comme idéale. [...] Les lois de Raoult sont alors valables. Elles ne le sont pas si le soluté est dissocié en ions (solutions électrolytiques) [...]  5, record 22, French, - solution%20%C3%A9lectrolytique

Record number: 22, Textual support number: 2 CONT

Une expérience simple et amusante permet de faire une solution électrolytique qui polit les pièces en argent. Elle peut alors être présentée aux élèves de façon à démontrer l'utilité des électrolytes dans la vie de tous les jours. [...] Des réactions chimiques se produisent entre la solution de sel et de bicarbonate de soude et la solution d'aluminium. La chaleur transforme en fait l'eau et l'aluminium en une solution d'électrolyte qui produit un courant électrique qui enlève la ternissure sur les pièces de monnaie.  6, record 22, French, - solution%20%C3%A9lectrolytique

Record number: 22, Textual support number: 3 CONT

Lars Onsager [chimiste américain d'origine norvégienne) reprend la théorie de Debye-Huckel -- première application de la thermodynamique à l'ionisation d'une solution d'électrolytes -- et l'étend à tous les ions.  7, record 22, French, - solution%20%C3%A9lectrolytique

Record 22,  Textual support,  Spanish

Record 23,  Textual support,  English

Record number: 23, Textual support number: 1 DEF

A compound containing a central atom or ion to which are attached molecules or ions whose number exceeds the number corresponding to the oxidation number(or valence) of the central atom. The central atom, or center of coordination, is usually a transition metal.  3, record 23, English, - coordination%20compound

Record 23,  Textual support,  French

Record number: 23, Textual support number: 1 DEF

Composé moléculaire qui, en solution, donne des ions complexes.  2, record 23, French, - compos%C3%A9%20de%20coordination

Record number: 23, Textual support number: 1 CONT

Actuellement, la théorie du champ cristallin permet de rendre compte de façon souvent très satisfaisante de la stéréochimie, des propriétés magnétiques et de la stabilité des complexes de coordination.  2, record 23, French, - compos%C3%A9%20de%20coordination

Record 23,  Textual support,  Spanish

Record number: 23, Textual support number: 1 DEF

Compuesto químico que contiene un átomo central unido a otros átomos por enlaces coordinados.  1, record 23, Spanish, - compuesto%20de%20coordinaci%C3%B3n

Record 24,  Textual support,  English

Record number: 24, Textual support number: 1 DEF

The formation of complexes in which a metal ion is held in a ring structure, with one or more molecules having several electron-donor groups.  3, record 24, English, - chelation%20of%20a%20metal%20ion

Record number: 24, Textual support number: 2 DEF

The formation or presence of bonds (or other attractive forces) from two or more separate binding sites within the same ligand to a single central atom.  4, record 24, English, - chelation%20of%20a%20metal%20ion

Record number: 24, Textual support number: 1 OBS

chelation of a metal ion : term standardized by ISO.  5, record 24, English, - chelation%20of%20a%20metal%20ion

Record 24,  Textual support,  French

Record number: 24, Textual support number: 1 DEF

Formation de complexes où l'ion métal est engagé en combinaison dite en anneau, avec une ou plusieurs molécules comportant plusieurs groupements donneurs d'électrons. [Définition normalisée par l'ISO.]  1, record 24, French, - ch%C3%A9lation%20d%27ions%20m%C3%A9talliques

Record number: 24, Textual support number: 2 DEF

Formation ou présence de liaisons (ou autres forces attractives) entre un atome central unique et deux ou plusieurs sites liants distincts d'un même coordinat.  3, record 24, French, - ch%C3%A9lation%20d%27ions%20m%C3%A9talliques

Record number: 24, Textual support number: 1 OBS

chélation d'ions métalliques : terme normalisé par l'ISO.  4, record 24, French, - ch%C3%A9lation%20d%27ions%20m%C3%A9talliques

Record 24,  Textual support,  Spanish

Record 25,  Textual support,  English

Record number: 25, Textual support number: 1 CONT

The Lewis Theory has been used extensively in the interpretation of the formation of coordination compounds in which the ligand is the base and the metal ion or ligand acceptor is the acid.  1, record 25, English, - metal%20ion

Record 25,  Textual support,  French

Record number: 25, Textual support number: 1 CONT

Considérons les complexes d'un ion métallique M²+ accepteur, avec un donneur X- [...]. En réalité, un ion tel que M²+, grâce à son champ électrique, attire par effet électrostatique, des molécules de solvant dans son entourage (solvatation) [...]  2, record 25, French, - ion%20m%C3%A9tallique

Record number: 25, Textual support number: 2 CONT

Les chercheurs sont aujourd'hui à peu près unanimes à identifier quatre sources différentes possibles aux ions métalliques qui se cristallisent dans les nodules : les sels dissous au sein de l'eau de mer; les particules métallifères en provenance des continents et véhiculées par les sédiments; les apports organiques, tels les cadavres d'animaux marins décomposés et dissous; l'activité volcanique et hydrothermale, enfin, dont est le siège la croûte terrestre.  3, record 25, French, - ion%20m%C3%A9tallique

Record number: 25, Textual support number: 3 CONT

Lors de la diagenèse, les eaux expulsées du sédiment peuvent entraîner et déposer ailleurs des ions métalliques.  4, record 25, French, - ion%20m%C3%A9tallique

Record number: 25, Textual support number: 4 CONT

Certains des facteurs du métamorphisme, minéralisateurs et vapeurs d'eau en particulier, peuvent déplacer des ions métalliques et donner naissance à des gîtes hydrothermaux.  5, record 25, French, - ion%20m%C3%A9tallique

Record 25,  Textual support,  Spanish

Record 26,  Textual support,  English

Record number: 26, Textual support number: 1 DEF

Atom of metal which has lost one or more electrons and therefore has a positive electrical charge. Table salt(sodium chloride) contains sodium ion, for instance.  3, record 26, English, - metal%20ion

Record number: 26, Textual support number: 1 CONT

Some enzymes depend for activity only on their structure as proteins, while others also require one or more nonprotein components, called cofactors. The cofactor may be a metal ion.... In such enzymes the metal ion may serve as(1) the primary catalytic center;(2) a bridging group, to bind substrate and enzyme together through formation of a coordination complex; or(3) an agent stabilizing the conformation of the enzyme protein in its catalytically active form. Enzymes requiring metal ions are sometimes called metalloenzymes.  4, record 26, English, - metal%20ion

Record number: 26, Textual support number: 1 OBS

The metal ions most frequently used as enzyme activators are magnesium, manganese, zinc, potassium, iron, copper, calcium, cobalt, and molybdenum.  3, record 26, English, - metal%20ion

Record 26,  Textual support,  French

Record number: 26, Textual support number: 1 DEF

Atome de métal qui a perdu un ou plusieurs électrons, il possède donc une charge positive.  3, record 26, French, - ion%20m%C3%A9tallique

Record number: 26, Textual support number: 1 CONT

De nombreuses protéines présentent un niveau de structure supplémentaire, après la structure tertiaire : certaines sont composées de plusieurs chaînes polypeptidiques reliées entre elles par diverses liaisons faibles et parfois par des ponts disulfure; d'autres comportent des constituants non peptidiques : les ions métalliques, par exemple, sont indispensables à l'activité de certaines enzymes, et l'hémoglobine, la chlorophylle et un grand nombre d'autres protéines renferment par exemple un groupe chimique appelé porphyrine.  3, record 26, French, - ion%20m%C3%A9tallique

Record number: 26, Textual support number: 1 OBS

Toutes les enzymes dont le cofacteur est un ion métallique seront sensibles aux agents couplexant les métaux tel l'EDTA  4, record 26, French, - ion%20m%C3%A9tallique

Record 26,  Textual support,  Spanish

Record 27,  Textual support,  English

Record number: 27, Textual support number: 1 CONT

COGNIS TerraMet metal extraction unit. The COGNIS TerraMet technology is a two-stage process designed to treat contaminated soil, sediment and so forth containing metals and organics. Metals are first removed with leaching agents either by reduction or by ion exchange.  1, record 27, English, - metal%20extraction%20unit

Record 27,  Textual support,  French

Record number: 27, Textual support number: 1 CONT

Unité d'extraction des métaux COGNIS TerraMet. Le procédé COGNIS TerraMet est un procédé en deux étapes pour traiter les sols, sédiments, etc. contenant des métaux et des contaminants organiques. Les métaux sont d'abord enlevés par des agents de lixiviation soit par réduction ou par échange ionique.  1, record 27, French, - unit%C3%A9%20d%27extraction%20des%20m%C3%A9taux

Record 27,  Textual support,  Spanish

Record 28,  Textual support,  English

Record number: 28, Textual support number: 1 CONT

The ISFET(Ion Sensitive Field Effect Transistor) methodoly for ion measurements is developed on the basis of the MOSFET(Metal Oxide Silicon Field Effect Transistor). The first attempts to use the ISFET as pH sensor were made already in 1970. The basic principle underlying the MOSFET is the control of a current flowing between two semiconductor electrodes. Drain and source are placed on the same element, with a third electrode, the gate, between them.  3, record 28, English, - ion%2Dsensitive%20field%20effect%20transistor

Record 28,  Textual support,  French

Record 28,  Textual support,  Spanish

Record 29,  Textual support,  English

Record number: 29, Textual support number: 1 DEF

A chromatographic technique in which an ion exchanger loaded with metal ions is used as the stationary phase for separation of a mixture of ligands in solution.  2, record 29, English, - ligand%2Dexchange%20chromatography

Record 29,  Textual support,  French

Record 29,  Textual support,  Spanish

Record 30,  Textual support,  English

Record number: 30, Textual support number: 1 DEF

The transformation of a metal ion into a new complex ion by the action of molecules having at least one electron-donor group. [Definition standardized by ISO. ]  1, record 30, English, - complexing%20of%20a%20metal%20ion

Record number: 30, Textual support number: 1 OBS

complexing of a metal ion : term standardized by ISO.  2, record 30, English, - complexing%20of%20a%20metal%20ion

Record 30,  Textual support,  French

Record number: 30, Textual support number: 1 DEF

Transformation d'un ion métal en un ion complexe nouveau, par l'intervention de molécules comportant au moins un groupement donneur d'électrons. [Définition normalisée par l'ISO.]  1, record 30, French, - complexion%20d%27ions%20m%C3%A9talliques

Record number: 30, Textual support number: 1 OBS

complexion d'ions métalliques : terme normalisé par l'ISO.  2, record 30, French, - complexion%20d%27ions%20m%C3%A9talliques

Record 30,  Textual support,  Spanish

Record 31,  Textual support,  English

Record number: 31, Textual support number: 1 DEF

The effectiveness of certain molecules to transform a metal ion into a new complex ion in which the metal ion loses its ionic identity. [Definition standardized by ISO. ]  1, record 31, English, - complexing%20power%20for%20metal%20ions

Record number: 31, Textual support number: 1 OBS

complexing power for metal ions: term standardized by ISO.  2, record 31, English, - complexing%20power%20for%20metal%20ions

Record 31,  Textual support,  French

Record number: 31, Textual support number: 1 DEF

Degré d'aptitude de certaines molécules de transformer un ion métallique en un nouvel ion complexe où l'ion métallique perd son identité ionique. [Définition normalisée par l'ISO.]  1, record 31, French, - pouvoir%20complexant%20des%20ions%20m%C3%A9talliques

Record number: 31, Textual support number: 1 OBS

pouvoir complexant des ions métalliques : terme normalisé par l'ISO.  2, record 31, French, - pouvoir%20complexant%20des%20ions%20m%C3%A9talliques

Record 31,  Textual support,  Spanish

Record 32,  Textual support,  English

Record number: 32, Textual support number: 1 DEF

A metal ion that combines preferentially with ligands containing ligating atoms other than the lightest of their Periodic Group.  1, record 32, English, - class%20b%20metal%20ion

Record 32,  Textual support,  French

Record number: 32, Textual support number: 1 DEF

Ion métallique qui se combine préférentiellement avec des coordinats dont les atomes liants ne sont pas les plus légers de leurs groupes dans la classification périodique des éléments.  1, record 32, French, - ion%20m%C3%A9tallique%20de%20classe%20b

Record 32,  Textual support,  Spanish

Record 33,  Textual support,  English

Record number: 33, Textual support number: 1 CONT

Organometallic complex catalysts tend to be highly active, specific, and selective, and may resist poisoning better than heterogeneous systems. The catalytic center may have two metal sites. Organometallic catalysts have a central transition-metal atom or ion bonded to molecules known as ligands which form a polyhedron around the metal. The nature of the metal and ligands critically influences the electronic structure of the complex. The coordination bonding properties of the metal are a key feature of the catalytic complexes. Important reactions of catalyst complexes are ligand exchange, oxidative addition, and the insertion reaction.  1, record 33, English, - organometallic%20catalyst

Record 33,  Textual support,  French

Record 33,  Textual support,  Spanish

Record 34,  Textual support,  English

Record number: 34, Textual support number: 1 DEF

A metallic complex in which the activity of the metal ion is suppressed by chelation.  1, record 34, English, - chelate%20of%20a%20metal%20ion

Record number: 34, Textual support number: 1 OBS

term standardized by ISO.  2, record 34, English, - chelate%20of%20a%20metal%20ion

Record 34,  Textual support,  French

Record number: 34, Textual support number: 1 DEF

Complexe métallique où l'activité de l'ion métal est dissimulée par chélation.  1, record 34, French, - ch%C3%A9late%20d%27ions%20m%C3%A9talliques

Record number: 34, Textual support number: 1 OBS

terme normalisé par l'ISO.  2, record 34, French, - ch%C3%A9late%20d%27ions%20m%C3%A9talliques

Record 34,  Textual support,  Spanish

Record 35,  Textual support,  English

Record number: 35, Textual support number: 1 DEF

The formation of complexes in which a metal ion is held in a ring structure, with one or more molecules having several electron-donor groups.  1, record 35, English, - chelation%20of%20a%20metal%20ion

Record number: 35, Textual support number: 1 OBS

term standardized by ISO.  2, record 35, English, - chelation%20of%20a%20metal%20ion

Record 35,  Textual support,  French

Record number: 35, Textual support number: 1 DEF

Formation de complexes où l'ion métal est engagé en combinaison dite en anneau avec une ou plusieurs molécules comportant plusieurs groupements donneurs d'électrons.  1, record 35, French, - ch%C3%A9lation%20d%27ions%20m%C3%A9talliques

Record number: 35, Textual support number: 1 OBS

terme normalisé par l'ISO.  2, record 35, French, - ch%C3%A9lation%20d%27ions%20m%C3%A9talliques

Record 35,  Textual support,  Spanish

Record 36,  Textual support,  English

Record number: 36, Textual support number: 1 CONT

Metal salts(e. g. zinc chloride) react with Ruhemann's purple to change colour of ninhydrin print. Zinc chloride causes ninhydrin prints to fluoresce under 488 mm argon ion laser line.  1, record 36, English, - Ruhemann%27s%20purple

Record 36,  Textual support,  French

Record 36,  Textual support,  Spanish