Abstract: The invention concerns a method for communication of multimedia information between two or more terminals connected to a network, said method providing: at least one restricted mode communication sequence in which at least some multimedia information is not communicated and, in the event of activation of the restricted mode communication sequence from at least one terminal: communicating to at least one other terminal prerecorded information instead of the multimedia information not communicated, in which method said prerecorded information is selected as a function of the terminal to which it is to be sent.

Abstract: The present invention relates to a method for the desulfurization of a fossil fuel containing one or more organosulfur compounds. In one embodiment, the method comprises the steps of (1) contacting the fossil fuel with a biocatalyst capable of converting the organosulfur compound to an oxyorganosulfur compound which is separable from the fossil fuel; and (2) separating the oxyorganosulfur compound from the fossil fuel. The oxyorganosulfur compound can then be isolated, discarded or further processed, for example, via desulfurization by a biocatalyzed process or an abiotic process, such as hydrodesulfurization.

Abstract: An improved flame photometry detector to give direct quantitative detection of molecules containing sulfur by:-- the total combustion of the mixture to be analyzed so as to transform the sulfur into sulfur oxide (primarily SO.sub.2);-- the linearization, by an electronic device, of the signal supplied by the electrometer, in series with the photomultiplier of the detector, prior to recording (this results in the proportionality of the recording to the number of sulfur-containing molecules detected); and preferably the provision of a leakage flow beyond the burner and in front of the detection so as to avoid saturation of the detector.These improvements can be applied to the analysis of a hydrocarbon mixture and of sulfur compounds which have been previously eluted on a chromatographic column.