Abstract: This invention relates to a non-medical food additive that is an animal growth promoter containing 99% pure zeolite partially or totally exchanged with a Cm+ cation (in other words a synthetic zeolite) with the general formula I below: 1 m ? yC m + ? ( 1 - y ) ? 1 n ? M n + ? AlO 2 ? x ? SiO 2 in which x is greater than 1 and advantageously between 1 and 15; Mn+ represents an alkaline or alkaline earth exchangeable ion, advantageously Na+, K+, Ca2+ or Li+; n is between 1 and 2; y is the exchange rate and is between 0.001 and 1; Cm+ is a metallic cation chosen from among copper Cu2+, silver Ag+ or zinc Zn2+; m is between 1 and 2. It also relates to an additive premix and a supplemented food containing it and a method of improving the growth of animals.

Abstract: A mass label for labelling and detecting a biological molecule by mass spectroscopy, which label comprises the following structure: X-L-M wherein X is a mass marker moiety comprising the following group: formula (I), wherein the cyclic unit is aromatic or aliphatic and comprises from 0-3 double bonds independently between any two adjacent atoms; each Z is independently N, N(R1), C(R1), CO, CO(R1), C(R1)2, O or S; X is N, C or C(R1); each R1 is independently H, a substituted or unsubstituted straight or branched C1-C6 alkyl group, a substituted or unsubstituted aliphatic cyclic group, a substituted or unsubstituted aromatic group or a substituted or unsubstituted heterocyclic group; and y is an integer from 0-10, L is a cleavable linker comprising an amide bond and M is a mass normalization moiety.

Abstract: This invention relates to a non-medical food additive that is an animal growth promoter containing 99% pure zeolite partially or totally exchanged with a Cm+ cation (in other words a synthetic zeolite) with the general formula I below: 1 m ? yC m + ? ( 1 - y ) ? 1 n ? M n + ? AlO 2 ? x ? SiO 2 in which x is greater than 1 and advantageously between 1 and 15; Mn+ represents an alkaline or alkaline earth exchangeable ion, advantageously Na+, K+, Ca2+ or Li+; n is between 1 and 2; y is the exchange rate and is between 0.001 and 1; Cm+ is a metallic cation chosen from among copper Cu2+, silver Ag+ or zinc Zn2+; m is between 1 and 2. It also relates to an additive premix and a supplemented food containing it and a method of improving the growth of animals.

Abstract: Provided is a method for characterizing a molecule by mass spectrometry, which molecule comprises one or more free amino groups, which method comprises: (a) reacting one or more free amino groups in the molecule with a mass tag reagent comprising a reactive functionality capable of reacting with an amino group, and a tertiary amino group linked to the reactive functionality; and (b) characterizing the molecule by mass spectrometry.

Abstract: A method for decomposing N2O is described. The method uses, as a catalyst, an oxide based on cerium and lanthanum, which further includes at least one oxide of an element chosen from zirconium and rare earths other than cerium and lanthanum. This catalyst is stable, enabling it to be used at high temperatures.

Abstract: A method for decomposing N2O is described. The method uses, as a catalyst, an oxide based on cerium and lanthanum, which further includes at least one oxide of an element chosen from zirconium and rare earths other than cerium and lanthanum. This catalyst is stable, enabling it to be used at high temperatures.

Abstract: A mass label for labelling and detecting a biological molecule by mass spectroscopy, which label comprises the following structure: X-L-M wherein X is a mass marker moiety comprising the following group: formula (I), wherein the cyclic unit is aromatic or aliphatic and comprises from 0-3 double bonds independently between any two adjacent atoms; each Z is independently N, N(R1), C(R1), CO, CO(R1), C(R1)2, O or S; X is N, C or C(R1); each R1 is independently H, a substituted or unsubstituted straight or branched C1-C6 alkyl group, a substituted or unsubstituted aliphatic cyclic group, a substituted or unsubstituted aromatic group or a substituted or unsubstituted heterocyclic group; and y is an integer from 0-10, L is a cleavable linker comprising an amide bond and M is a mass normalization moiety.

Abstract: Provided is a set of two or more mass labels, each label in the set comprising a mass marker moiety attached via a cleavable linker having at least one amide bond to a mass normalization moiety, wherein the aggregate mass of each label in the set may be the same or different and the mass of the mass marker moiety of each label in the set may be the same or different, and wherein in any group of labels within the set having a mass marker moiety of a common mass each label has an aggregate mass different from all other labels in that group, and wherein in any group of labels within the set having a common aggregate mass each label has a mass marker moiety having a mass different from that of all other mass marker moieties in that group, such that all of the mass labels in the set are distinguishable from each other by mass spectrometry, and wherein the mass marker moiety comprises an amino acid and the mass normalization moiety comprises an amino acid.

Abstract: Provided is a method for characterizing an analyte by matrix assisted laser desorption ionization (MALDI) mass spectrometry, which method comprises: (a) labelling the analyte with a light-absorbing label that absorbs light at a pre-determined frequency, to form a labelled analyte; (b) embedding the labelled analyte in a matrix formed from at least one compound that absorbs light, to form an embedded labelled analyte; (c) desorbing the embedded labelled analyte by exposing it to light having the pre-determined frequency, to form a desorbed analyte; and (d) detecting the desorbed analyte by mass spectrometry to characterize the analyte.

Abstract: This invention relates to a non-medicinal food additive that is an animal growth promoter containing 99% pure zeolite partially or totally exchanged with a Cm+ cation, i.e., a synthetic zeolite, having the general formula I below: 1 m ? yC m + ? ( 1 - y ) ? 1 n ? M n + ? AlO 2 ? xSiO 2 in which x is greater than 1 and advantageously between 1 and 15; Mn+ represents an alkaline or alkaline earth exchangeable ion, advantageously Na+, K+, Ca2+ or Li+; n is between 1 and 2; y is the exchange rate and is between 0.001 and 1; Cm+ is a metallic cation chosen from among copper Cu2+, silver Ag+ or zinc Zn2+; m is between 1 and 2; this invention also relates to an additive premix and a supplemented food containing same and a method of improving the growth of animals.

Abstract: A catalyst for reducing the nitrous oxide content in gas, which operates at relatively low temperatures, the activity of which is relatively insensitive to the presence of water vapor and which is highly resistant to hydrothermal degradation, is prepared from ferrierite exchanged with iron. Application to the treatment of gases with a low N2O content, such as gases resulting from plants for the manufacture of nitric acid, and of gases with a high N2O content, which are emitted during oxidations of organic compounds by nitric acid.

Abstract: The invention relates to a process for the catalytic decomposition of N2O to N2 and O2. This process is carried out at a high temperature, generally of between 700 and 1000° C., at a high HSV and in the presence of a catalyst composed of a mixed oxide of zirconium and of cerium existing in the form of a solid solution.

Abstract: Provided is a method for characterising a molecule by mass spectrometry, which molecule comprises one or more free amino groups, which method comprises: (a) reacting one or more free amino groups in the molecule with a mass tag reagent comprising a reactive functionality capable of reacting with an amino group, and a tertiary amino group linked to the reactive functionality; and (b) characterising the molecule by mass spectrometry.

Abstract: Provided is a method for characterizing a polypeptide, which method comprises the steps of: (a) optionally reducing cysteine disulphide bridges in the polypeptide to form free thiols, and capping the free thiols; (b) cleaving the polypeptide with a sequence specific cleavage reagent to form peptide fragments; (c) optionally deactivating the cleavage reagent; (d) capping one or more ?-amino groups that are present with a lysine reactive agent; (e) analyzing peptide fragments by mass spectrometry to form a mass fingerprint for the polypeptide; and (f) determining the identity of the polypeptide from the mass fingerprint.

Abstract: Provided is a method for characterising an analyte by matrix assisted laser desorption ionisation (MALDI) mass spectrometry, which method comprises: (a) labelling the analyte with a light-absorbing label that absorbs light at a pre-determined frequency, to form a labelled analyte; (b) embedding the labelled analyte in a matrix formed from at least one compound that absorbs light, to form an embedded labelled analyte; (c) desorbing the embedded labelled analyte by exposing it to light having the pre-determined frequency, to form a desorbed analyte; and (d) detecting the desorbed analyte by mass spectrometry to characterise the analyte; wherein the light absorbing label comprises a fluorophore moiety, and wherein prior to detecting by mass spectrometry, the analyte is selected for detection on the basis of its fluorophore moiety.

Abstract: Provided is a method for characterising a polypeptide, which method comprises the steps of; (a) optionnally reducing cysteine disulphide bridges in the polypeptide to form free thiols, and capping the free thiols; (b) cleaving the polypeptide with a sequence specific cleavage reagent to form peptide fragments; (c) optionally deactivating the cleavage reagent; (d) capping one or more ?-amino groups that are present with a lysine reactive agent; (e) analysing peptide fragments by mass spectrometry to form a mass fingerprint for the polypeptide; and (f) determining the identity of the polypeptide from the mass fingerprint.

Abstract: Provided is a set of two or more mass labels, each label in the set comprising a mass marker moiety attached via a cleavable linker having at least one amide bond to a mass normalisation moiety, wherein the aggregate mass of each label in the set may be the same or different and the mass of the mass marker moiety of each label in the set may be the same or different, and wherein in any group of labels within the set having a mass marker moiety of a common mass each label has an aggregate mass different from all other labels in that group, and wherein in any group of labels within the set having a common aggregate mass each label has a mass marker moiety having a mass different from that of all other mass marker moieties in that group, such that all of the mass labels in the set are distinguishable from each other by mass spectromety, and wherein the mass marker moiety comprises an amino acid and the mass normalisation moiety comprises an amino acid.

Abstract: Provided is a method for characterising a polypeptide or a population of polypeptides, which method comprises the steps of: (a) contacting a sample comprising one or more polypeptides with a lysine reactive agent to cap ?-amino groups; (b) optionally reacting the sample of polypeptides with an amine reactive reagent to block ?-amino groups; (c) digesting the sample of polypeptides with a cleavage reagent to produce peptide fragments; (d) optionally deactivating the cleavage reagent; (e) removing those peptides having uncapped or unblocked amino groups; and (f) recovering the N-terminal peptides.

Abstract: Provided is a method for characterising a polypeptide or a population of polypeptides, which method comprises the steps of: (a) optionally reducing disulphide linkages in the polypeptides, if they are present and capping free thiols in the polypeptides, if they are present; (b) contacting a sample comprising one or more polypeptides with a cleavage reagent which cleaves one or more polypeptides on the C-terminal side of a lysine residue to produce peptide fragments; (c) optionally deactivating the cleavage reagent; (d) contacting the sample with a lysine reactive agent to cap ?-amino groups; (e) removing those peptides having capped ?-amino groups; and (f) recovering the C-terminal peptides.

Abstract: The present invention relates to a method for fractionating a sample of macromolecules, in particular for electrophoretically separating proteins, characterized in that at least one macromolecule in the sample is modified, before carrying out the separation method, with at least one group which can be partially or completely eliminated once again under mild conditions.