Abstract:
The invention relates to a gel made of apolar medium including:an apolar medium,a "multichain" liquid surface-active agent in acidic form, soluble or dispersible in the said apolar medium,an agent for neutralizing the said "multichain" surface-active agent,from 0.2 to 5 molecules of water per molecule of "multichain" surface-active agent,optionally at least one emulsifying agent and/or a solid filler which is soluble or insoluble in the apolar medium.This gel may be employed for the formulation of water-based drilling fluids.
Abstract:
Novel aluminum phosphates, in particular amorphous aluminum phosphate powders having a BET specific surface no greater than 25 m.sup.2 /g, well suited as binders/hardeners or for the production of ceramic shaped articles, are prepared by reacting at least one aluminum compound, e.g., an aluminum oxide, hydroxide or oxyhydroxide, with phosphoric acid or an aluminum phosphate, e.g., an acid aluminum orthophosphate, in a liquid reaction medium devoid of inorganic acid anions other than of phosphoric acid, and then spray- or freeze-drying the suspension thus obtained.
Abstract:
A method of transmission of at least one data content by a source node associated with a generator application to at least one destination node, each associated with a consumer application, in a communications network comprising a plurality of nodes, each being associated with an application, the network implementing a first clocking which defines a first cycle, called a network cycle, for data transmission on said network.Each node of the network implements a second clocking which defines a second cycle, called a local cycle, for data transmission between the node of the network and its associated application, the network cycle being equal to an integer multiple P, P≧1, of the local cycle, the start of the network cycle coinciding with the start of a local cycle, the local cycle comprising a plurality of virtual channels corresponding to time slots, a set of the virtual channels being assigned to the transmission of the content or contents.
Abstract:
A method for insertion of information for control of broadcasting of a data stream in a heterogeneous network, the network including an entry sub-network conveying first packets and a basic network conveying second packets. The sub-network is connected to the basic network by an entry node forming the second packets. The node receives first packets from the sub-network, associates an access level with each first packet from a plurality of access levels, as a function of a predetermined policy of association, forms each second packet by enclosing at least a first packet or part thereof into the second packet, the enclosed first packets or part thereof being associated with a same access level, for each second packet, inserts, into a field of the second packet representing the broadcast control information, the same access level, and transmits the formed second packets into the basic network.
Abstract:
The communication method concerns a network having communication devices each adapted to determine, for each item of information to be transmitted, the path to a cause it to follow on the network, and a transmission mode, connected or non-connected. It includes, for each communication device which is to effect a transmission in connected mode, an operation of broadcasting, to all the other communication devices in the network, an item of information representing the passband necessary for said transmission in connected mode, and a passband allocation operation, during which there is allocated, on the one hand, to the transmissions in connected mode, the passband which is necessary to them and, on the other hand, all or part of the passband available to each transmission to be effected in non-connected mode.
Abstract:
Method for setting up an isochronous data stream connection between at least one entry terminal or talker and at least one addressee terminal or listener connected by at least one bridge of a digital bus networ. At least some of the bridges are associated with an isochronous delay that is parametrizable and the method comprises the following steps: (a) obtaining at least one routing path comprising one or more bridges, including at least one bridge with parametrizable isochronous delay; (b) for each bridge included in the at least one routing path, obtaining the value or possible values of the isochronous delay of the bridge; (c) for at least one bridge with parametrizable isochronous delay included in the at least one routing path, selecting the value that must be taken by the isochronous value of the bridge, so that the stream connection taking the at least one routing path incurs a predetermined total isochronous delay; (d) for the at least one bridge with parametrizable isochronous delay included in the at least one routing path, adapting and instantiating at least one resource of the bridge, so that the parametrizable isochronous delay of the bridge takes said selected value.
Abstract:
A method for the distribution of an audiovisual signal, in a communications network interconnecting a plurality of terminals, from a source terminal to one or more destination terminals comprises: a step for the detection of an initializing signal; a step for the transmission of the audiovisual signal to a first group of terminals; a step for the sending of indication messages on the transmission of the audio signal to a second group of terminals; a step for the reception of confirmation messages used to determine the terminals of the second group for which the transmission of the audiovisual signal must be maintained; a step to stop the transmission of the audiovisual signals to the terminals of the second group for which the transmission of this signal must not be maintained. A method for the validation of the distribution of an audiovisual signal from a terminal source to a destination terminal in a communications network interconnecting a plurality of terminals formed by all or part of the terminals of the first group is also disclosed. Devices implementing the above methods are also disclosed.
Abstract:
The invention concerns a method of checking the synchronization between at least two nodes Ni−1, Ni, with i=1, . . . , n in a network, each of said nodes having respectively an internal clock having a respective clock frequency Fi−1, Fi, wherein said method includes the following steps: a) transmitting the frequency Fi−1 of the internal clock from the node Ni−1 to the node Ni, b) comparing the frequency Fi−1 of the internal clock of the node Ni−1 transmitted to the node Ni with the frequency Fi of the internal clock of said node Ni, c) checking the synchronization between the nodes Ni−1 and Ni using the result of the comparison between the frequencies Fi−1 and Fi.
Abstract:
The communication method concerns a network having communication devices each adapted to determine, for each item of information to be transmitted, the path to cause it to follow on the network, and a transmission mode, connected or non-connected. It includes: for each communication device which is to effect a transmission in connected mode, an operation of broadcasting, to all the other communication devices in the network, an item of information representing the passband necessary for said transmission in connected mode, and a passband allocation operation (1221), during which there is allocated, on the one hand, to the transmissions in connected mode, the passband which is necessary to them and, on the other hand, all or part of the passband available to each transmission to be effected in non-connected mode.
Abstract:
Composition which is useful for exterior coatings, comprising, for successive or simultaneous addition, an aqueous phase comprising a polyol dispersion or solution whose glass transition temperature (tg) is not more than 100° C.; and an isocyanate sub-composition already emulsified or to be emulsified in the aqueous phase.