TERMIUM Plus^®

Fiche 1,  Justifications,  Anglais

Record number: 1, Textual support number: 1 DEF

A chemical compound known only in solution, yellow, unstable, hydrogen sulfide odor, decomposed by acids with evolution of hydrogen sulfide, used as analytical reagent, and as insecticide spray.  2, fiche 1, Anglais, - ammonium%20polysulfide

Record number: 1, Textual support number: 1 OBS

Red ammonium sulfide solution.... contains about 8% NH3 and 22% sulfur, corresponding to about 30%(NH4) 2S3.... Yellow ammonium sulfide solution... contains 8-9% NH3 and about the same percentage of sulfur, corresponding to 16-20% as(NH4) 2S.  3, fiche 1, Anglais, - ammonium%20polysulfide

Record number: 1, Textual support number: 2 OBS

Chemical formula: (NH₄)₂x  4, fiche 1, Anglais, - ammonium%20polysulfide

Fiche 1,  Justifications,  Français

Record number: 1, Textual support number: 1 OBS

Connu seulement sous forme de solution, jaune, instable, odeur de SH2. Usages : Réactif chimique; insecticide.  2, fiche 1, Français, - polysulfure%20d%27ammonium

Record number: 1, Textual support number: 2 OBS

Formule chimique : (NH₄)₂x  2, fiche 1, Français, - polysulfure%20d%27ammonium

Fiche 1,  Justifications,  Espagnol

Fiche 2,  Justifications,  Anglais

Record number: 2, Textual support number: 1 CONT

Except for several complex species such as ammonium chloroplatinate, (NH₄)₂PtCl₆, ammonium salts are very soluble in water. In aqueous solutions, they ionize to produce the ammonium ion, NH4+, and an acid anion. Solutions of ammonium salts of strong or moderately strong acids are acidic as a result of hydrolysis of the ammonium ion.  2, fiche 2, Anglais, - ammonium%20ion

Record number: 2, Textual support number: 2 CONT

In addition to the familiar molecular acids, two classes of ionic acids emerge from the new definition [Bronsted-Lowry]. The second and more interesting class consists of positively charged ions(cations), such as ammonium ion... which can be derived by the addition of a proton to a molecular base, in this case ammonia(NH3).  4, fiche 2, Anglais, - ammonium%20ion

Record number: 2, Textual support number: 1 OBS

Every cation is necessarily an ion; anion must be either a cation or an anion.  2, fiche 2, Anglais, - ammonium%20ion

Record number: 2, Textual support number: 2 OBS

Chemical formula: NH₄⁺  3, fiche 2, Anglais, - ammonium%20ion

Fiche 2,  Justifications,  Français

Record number: 2, Textual support number: 1 CONT

ammonium [...] : Chimie organique. Nom générique des cations organiques [...] résultant du remplacement d'un ou de plusieurs atomes d'hydrogène dans le cation ammonium NH4+ par des radicaux carbonés monovalents.  3, fiche 2, Français, - ion%20ammonium%20NH4

Record number: 2, Textual support number: 1 OBS

Formule chimique : NH₄⁺  2, fiche 2, Français, - ion%20ammonium%20NH4

Record number: 2, Textual support number: 2 OBS

pluriel : des ions ammonium et des cations ammonium.  2, fiche 2, Français, - ion%20ammonium%20NH4

Fiche 2,  Justifications,  Espagnol

Fiche 3,  Justifications,  Anglais

Record number: 3, Textual support number: 1 CONT

Chirality about the trigonal axis. The quenchers are 6-coordinate Co(III) complexes with the general stoichiometric formula Co(NH3) 4(ndp) or Co(NH3) 4(ntp), where ndp denotes a diphosphate nucleotide ligand and ntp denotes a triphosphate nucleotide ligand. In these complexes the nucleotide ligand is coordinated to Co(III) via bidentate chelation in which the donor moieties are oxygen atoms from adjacent phosphate groups(beta, alpha in ndp and gamma, beta in ntp nucleotides). The nucleotides used as ligands in Ln in this study are the following : adenosine diphosphate and triphosphate(adp and atp), guanosine diphosphate and triphosphate(gdp and gtp), inosine diphosphate and triphosphate(idp and itp), cytidine triphosphate(ctp), uridine triphosphate(utp), and deoxythymidine triphosphate(ttp). The Co(NH3) 4(nucleotide) complexes have dissymmetric structures both within and external to the Co(NH3) 4(phosphate) coordination unit, but under the conditions employed in this study, they exist as mixtures of diastereomers that are quasi-racemic with respect to chirality within the Co(NH3) 4(phosphate) coordination units.  1, fiche 3, Anglais, - diphosphate%20nucleotide

Fiche 3,  Justifications,  Français

Fiche 3,  Justifications,  Espagnol

Fiche 4,  Justifications,  Anglais

Record number: 4, Textual support number: 1 CONT

We have recently used NH3 lasers in the far-infrared(FIR) to test the predictions of the laser equations(Lorenz-model) about instabilities of the most basic type of lasers.  3, fiche 4, Anglais, - NH3%20laser

Fiche 4,  Justifications,  Français

Record number: 4, Textual support number: 1 CONT

Le laser NH3 fait ainsi partie de la génération des lasers à gaz moléculaires pompés optiquement par lasers CO2, ceux-ci émettant aux longueurs d'onde supérieures à 10 um. Dans ce type de laser, le faisceau d'excitation (faisceau émis par le laser CO2) va donc en traversant le gaz (NH3) être transformé en lumière de longueurs d'onde différentes.  1, fiche 4, Français, - laser%20NH3

Record number: 4, Textual support number: 1 OBS

Le terme maser (amplification de micro-ondes par émission stimulée de radiation) est vieilli; il est maintenant remplacé par le terme laser.  2, fiche 4, Français, - laser%20NH3

Fiche 4,  Justifications,  Espagnol

Fiche 5,  Justifications,  Anglais

Record number: 5, Textual support number: 1 CONT

Included in the more important nitrogenous compounds emitted to the atmosphere from natural sources are N2O, NOx, NH3, and alphatic amines [from animal wastes].  1, fiche 5, Anglais, - aliphatic%20amine

Fiche 5,  Justifications,  Français

Record number: 5, Textual support number: 1 OBS

Réactif de médicament comme l'adriamycine et la daunomycine.  2, fiche 5, Français, - amine%20aliphatique

Fiche 5,  Justifications,  Espagnol

Fiche 6,  Justifications,  Anglais

Record number: 6, Textual support number: 1 DEF

An atmospheric gas which, like nitrogen or hydrogen, does not contribute to the global warming, or which, at very least, does so only indirectly, like carbon monoxide.  3, fiche 6, Anglais, - nongreenhouse%20gas

Record number: 6, Textual support number: 1 CONT

Sagan and Mullen suggested that ammonia(NH3), an efficient absorber of infrared, could have warmed the climate if the gas represented just 100 out of every million molecules of the air. Subsequent studies have shown, however, that the sun would have rapidly converted ammonia into the nongreenhouse gases nitrogen and hydrogen unless it was continually resupplied to the atmosphere from the plant's surface.  1, fiche 6, Anglais, - nongreenhouse%20gas

Fiche 6,  Justifications,  Français

Record number: 6, Textual support number: 1 DEF

Gaz atmosphérique qui n'augmente ni ne réduit l'effet de serre naturel mais qui peut présenter des effets radiatifs indirects.  2, fiche 6, Français, - gaz%20sans%20effet%20de%20serre

Record number: 6, Textual support number: 1 OBS

Le monoxyde de carbone (CO), les oxydes d'azote et les composés organiques volatils (COV) n'ont pas de propriétés radiatives et, par conséquent, n'ont aucun effet radiatif direct : ce sont des gaz sans effet de serre. Pourtant leur présence dans l'atmosphère influe sur la concentration d'autres gaz qui, eux, contribuent (effet radiatif direct) à l'effet de serre; c'est le cas du CO sur le méthane et des NOx sur l'ozone. C'est généralement ce qu'on entend par gaz sans effet de serre. Le même terme sert aussi, quoique plus rarement, à désigner des substances qui n'ont rien à voir avec l'effet de serre, comme le krypton ou l'hydrogène.  2, fiche 6, Français, - gaz%20sans%20effet%20de%20serre

Fiche 6,  Justifications,  Espagnol