TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

The enzyme that catalyzes the reaction 02- + 02- + 2H+ = H202 + 02.  3, record 1, English, - superoxide%20dismutase

Record number: 1, Textual support number: 1 OBS

The enzyme appears to be ubiquitous among aerobic organisms and protects the organism against action by the radical 0-2, which is believed to be a mutagenic radical, produced in an organism by ionizing radiation.  3, record 1, English, - superoxide%20dismutase

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Enzyme catalysant la dismutation de l'ion superoxyde en eau oxygénée.  3, record 1, French, - superoxyde%20dismutase

Record 1,  Textual support,  Spanish

Record number: 1, Textual support number: 1 DEF

[Enzima que cataliza] la dismutación del anión superóxido en peróxido de hidrógeno y oxígeno.  1, record 1, Spanish, - super%C3%B3xido%20dismutasa

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

The production of superoxide radicals at the membrane level (NADPH [nicotinamide adenine dinucleotide phosphate] oxidase) is initiated in specialized cells (oxidative burst) with phagocytic functions (macrophages) and contributes to their bactericid action.  4, record 2, English, - superoxide%20radical

Record number: 2, Textual support number: 1 DEF

Highly reactive compounds produced when oxygen is reduced by a single electron.  2, record 2, English, - superoxide%20radical

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 OBS

superoxyde : n.m. Nom générique de composés contenant l'ion O₂ dans lequel l'oxygène possède le nombre d'oxydation -0,5. Ex. : KO₂.  2, record 2, French, - radical%20superoxyde

Record number: 2, Textual support number: 1 CONT

Le radical superoxyde : comme déjà vu, 5% de l’oxygène que nous absorbons pour brûler les aliments, s’échappe sous la forme du radical superoxyde. Les globules blancs du système immunitaire utilisent également ce radical pour éliminer bactéries et virus. Au total, nous en fabriquons pas loin de 2 kg. tous les ans !  3, record 2, French, - radical%20superoxyde

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 DEF

A compound ... obtained as a greyish white toxic powder by heating barium monoxide in air or oxygen and used chiefly in making hydrogen peroxide and in pyrotechnics.  5, record 3, English, - barium%20peroxide

Record number: 3, Textual support number: 1 OBS

... insoluble in water; used as a bleach and in the glass industry.  6, record 3, English, - barium%20peroxide

Record number: 3, Textual support number: 2 OBS

Exists also as a octahydrate BaO2.8H2O.  7, record 3, English, - barium%20peroxide

Record number: 3, Textual support number: 3 OBS

barium dioxide(2-): The "-" following the number 2 is a superscript which refers to the minus sign.  2, record 3, English, - barium%20peroxide

Record number: 3, Textual support number: 4 OBS

Chemical formula: BaO₂  7, record 3, English, - barium%20peroxide

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 CONT

Chauffé au rouge sombre dans un courant d'oxygène, l'oxyde de baryum se transforme en bioxyde BaO₂, lequel se dissocie à température plus élevée; on s'est jadis servi de cette réaction pour extraire l'oxygène de l'air. Le bioxyde de baryum sert en outre à la préparation de l'eau oxygénée.  4, record 3, French, - peroxyde%20de%20baryum

Record number: 3, Textual support number: 1 OBS

dioxyde(2-) de baryum : Le signe «-» qui suit le chiffre 2 entre parenthèses s'écrit en exposant.  2, record 3, French, - peroxyde%20de%20baryum

Record number: 3, Textual support number: 2 OBS

Formule chimique : BaO₂  5, record 3, French, - peroxyde%20de%20baryum

Record 3,  Textual support,  Spanish

Record number: 3, Textual support number: 1 OBS

Fórmula química: BaO₂  2, record 3, Spanish, - per%C3%B3xido%20de%20bario

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 DEF

A chemical compound ... which appears under the form of poisonous, brown hexagonal crystals that decompose when heated, is insoluble in water and alcohol, soluble in glacial acetic acid, is derived by adding bleaching powder to an alkaline solution of lead hydroxide, and is used as an oxidizing agent, in electrodes, lead-acid storage batteries, matches and explosives, as a textile mordant, in dye manufacture, and as an analytical reagent.  7, record 4, English, - lead%28IV%29%20oxide

Record number: 4, Textual support number: 1 OBS

Chemical formula: PbO₂ or O₂Pb  8, record 4, English, - lead%28IV%29%20oxide

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 OBS

Formule chimique : PbO₂ ou O₂Pb  6, record 4, French, - oxyde%20de%20plomb%28IV%29

Record 4,  Textual support,  Spanish

Record number: 4, Textual support number: 1 OBS

Sólido cristalino de color pardo. Soluble en ácido acético glacial, insoluble en agua y alcohol. Oxidante. Tóxico.  1, record 4, Spanish, - di%C3%B3xido%20de%20plomo

Record number: 4, Textual support number: 2 OBS

Fórmula química: PbO₂ o O₂Pb  2, record 4, Spanish, - di%C3%B3xido%20de%20plomo

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 CONT

Catalytic filtration. The manganese contained in the water can be oxidized by the dissolved oxygen in the water alone provided the reaction is catalysed; for this purpose the water is filtered through a material rich in manganese dioxide such as a manganese ore, or through sand covered with a layer of manganese dioxide.  3, record 5, English, - manganese%20dioxide

Record number: 5, Textual support number: 1 OBS

manganese oxide: a generic term, corresponding to the formula MnO.  4, record 5, English, - manganese%20dioxide

Record number: 5, Textual support number: 2 OBS

bog manganese: A related concept which corresponds to an earthy mineral which consists mainly of hydrated manganese dioxide (q.v.).  5, record 5, English, - manganese%20dioxide

Record number: 5, Textual support number: 3 OBS

Also known under the following commercial designations: Cement Black; C.I. 77728; C.I. Pigment Black 14; C.I. Pigment Brown 8.  5, record 5, English, - manganese%20dioxide

Record number: 5, Textual support number: 4 OBS

Chemical formula: MnO₂  5, record 5, English, - manganese%20dioxide

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 CONT

Filtration catalytique. L'oxydation du manganèse contenu dans l'eau peut s'effectuer avec le seul oxygène dissous dans l'eau, à condition de catalyser la réaction; à cet effet on filtre sur un matériau riche en bioxyde de manganèse comme par exemple un minerai de manganèse ou simplement sur un sable recouvert d'une couche de bioxyde de manganèse.  4, record 5, French, - dioxyde%20de%20mangan%C3%A8se

Record number: 5, Textual support number: 1 OBS

Formule chimique : MnO₂  5, record 5, French, - dioxyde%20de%20mangan%C3%A8se

Record 5,  Textual support,  Spanish

Record 6,  Textual support,  English

Record 6,  Textual support,  French

Record 6,  Textual support,  Spanish

Record number: 6, Textual support number: 1 DEF

[Enzima] que cataliza la dismutación de superóxidos, O2-.  1, record 6, Spanish, - super%C3%B3xido%20dismutasa%20de%20manganeso

Record 7,  Textual support,  English

Record number: 7, Textual support number: 1 CONT

Strikingly, the mutant worms produce elevated levels of antioxidants (both cytoplasmic superoxide dismutase and an enzyme called catalase) and are more resistant to the toxic effects of paraquat, a herbicide that leads to generation of the superoxide radical.  1, record 7, English, - cytoplasmic%20superoxide%20dismutase

Record 7,  Textual support,  French

Record number: 7, Textual support number: 1 CONT

Le cuivre et le manganèse sont respectivement les co-facteurs de la superoxyde dismutase cytoplasmique et mytocondriale.  1, record 7, French, - superoxyde%20dismutase%20cytoplasmique

Record 7,  Textual support,  Spanish

Record number: 7, Textual support number: 1 CONT

SOD - superóxido dismutasa: Dos tipos, citoplasmática y mitocondrial [...] La superóxido dismutasa citoplasmática contiene en su sitio activo cobre y zinc, mientras que la superóxido dismutasa mitocondrial contiene en su sitio activo manganeso.  2, record 7, Spanish, - super%C3%B3xido%20dismutasa%20citoplasm%C3%A1tica

Record 8,  Textual support,  English

Record 8,  Textual support,  French

Record number: 8, Textual support number: 1 OBS

Usages : Oxydant énergique, blanchiment, source d'oxygène (en présence d'eau).  1, record 8, French, - superoxyde%20de%20potassium

Record 8,  Textual support,  Spanish

Record number: 8, Textual support number: 1 CONT

[El potasio] es más reactivo aún que el sodio y reacciona vigorosamente con el oxígeno del aire para formar el monóxido, K20, y el peróxido, K2O2. En presencia de un exceso de oxígeno, produce fácilmente el superóxido, KO2.  1, record 8, Spanish, - super%C3%B3xido%20de%20potasio

Record 9,  Textual support,  English

Record number: 9, Textual support number: 1 DEF

A compound characterized by the presence in its structure of the O₂-ion.  1, record 9, English, - superoxide

Record number: 9, Textual support number: 1 OBS

The O₂-ion has an odd number of electrons and, as a result, all superoxide compounds are paramagnetic.  1, record 9, English, - superoxide

Record number: 9, Textual support number: 2 OBS

The stable superoxides are: Sodium superoxide NaO₂, Potassium superoxide KO₂ ... In these compounds each oxygen atom has an oxidation number of -1/2 instead of -2, as a normal oxide.  1, record 9, English, - superoxide

Record 9,  Textual support,  French

Record number: 9, Textual support number: 1 DEF

Nom générique de composés contenant l'ion O₂- dans lequel l'oxygène possède le nombre d'oxydation -0,5. Ex. : KO₂.  1, record 9, French, - superoxyde

Record 9,  Textual support,  Spanish

Record number: 9, Textual support number: 1 DEF

Dentro de los oxidantes se encuentran: superóxido (O2-), peróxido de hidrógeno H2O2, oxígeno aislado O2 y radicales hidroxilo (OH).  1, record 9, Spanish, - super%C3%B3xido

Record 10,  Textual support,  English

Record number: 10, Textual support number: 1 DEF

A cream-colored powder that decomposes in water used as an antiseptic and a detergent.  4, record 10, English, - calcium%20peroxide

Record number: 10, Textual support number: 1 OBS

According to the Condensed Chemical Dictionary (HACHE, 1977, p. 154), calcium peroxide is used as a dough conditioner and seed desinfectant and for bleaching of oils, modification of starches, etc.  5, record 10, English, - calcium%20peroxide

Record 10,  Textual support,  French

Record 10,  Textual support,  Spanish

Record 11,  Textual support,  English

Record number: 11, Textual support number: 1 DEF

Oxidising and bleaching agent.  2, record 11, English, - sodium%20peroxide

Record 11,  Textual support,  French

Record 11,  Textual support,  Spanish

Record number: 11, Textual support number: 1 OBS

Polvo blanco amarillento, soluble en agua fría. Muy tóxico y fuerte oxidante.  2, record 11, Spanish, - per%C3%B3xido%20s%C3%B3dico

Record 12,  Textual support,  English

Record number: 12, Textual support number: 1 OBS

superoxide. A compound characterized by the presence in its structure of the O₂-ion. The O₂-ion has an odd number of electrons and, as a result, all superoxide compounds are paramagnetic.  1, record 12, English, - superoxide%20ion

Record number: 12, Textual support number: 2 OBS

The stable superoxides are: Sodium superoxide NaO₂, Potassium superoxide KO₂ ... In these compounds each oxygen atom has an oxidation number of -1/2 instead of -2, as a normal oxide.  1, record 12, English, - superoxide%20ion

Record 12,  Textual support,  French

Record number: 12, Textual support number: 1 OBS

superoxyde. Nom générique de composés contenant l'ion O₂- dans lequel l'oxygène possède le nombre d'oxydation -0,5. Ex. : KO₂.  1, record 12, French, - ion%20de%20superoxyde

Record 12,  Textual support,  Spanish