33results about How to "Possible to recover" patented technology

The present invention is constituted so as to enable the recovery of a database even when a log comprising a DB update history is not created. When executing a transaction in the logless mode, a logless-start log is created and written to a primary log VOL 55A at the start of this transaction, and this logless-start log is also written to a secondary log VOL 55B. Thereafter, batch processing is carried out for a DB of a primary DB VOL 51A, and while this transaction is being executed, the pair-split state of the DB VOL is cancelled either prior to the start or after the end of the batch processing, and if the difference between the DB VOLs is eliminated subsequent to the end of batch processing, a logless-end log is created and written to the primary log VOL 55A, and this log is also written to the secondary log VOL 55B.

In a network computer system, recovery may be impossible from a fault when the fault occurs in a network switch in a network or a device such as an external disk device. Provided is a computer system that includes a plurality of servers, a plurality of networks, a plurality of external disk devices, and a management computer, in which the management computer detects a fault which is occurred, retrieves an application stop server inaccessible to the used disk due to the fault, retrieves the disk for storing the same contents as contents stored in the disk used by the retrieved application stop server and the external disk device including the disk, retrieves an application resuming server capable of accessing the retrieved external disk device, and transmits an instruction to boot by using the retrieved disk to the retrieved application resuming server.

The file system of a hard disk or optical disc may lose consistency when an unexpected event like a power failure occurs during recording. When recording a data stream, e.g. a video stream, an interruption would lead to a loss of stream data when previously known methods are used, because the file system is not updated. Further, the storage medium may become unusable. Dedicated file system data are put in regular intervals in user data fields of the data stream, providing the possibility to recover an interrupted stream recording. The method can also be used to recover data streams recorded on write-once discs, and it is independent from the used file system.

The recovery of solids, and particularly solid particulates used as catalysts in slurry hydroprocessing, from asphaltene containing hydrocarbons is improved by controlling asphaltene precipitation. The formation of agglomerates of the solid particulates, having an increased diameter, results in the presence of precipitated asphaltenes, possibly due to flocculation. Asphaltene precipitation is controlled by varying process parameters or introducing additional diluent or flush streams that change the polarity of an asphaltene containing liquid product recovered from an effluent of a slurry hydroprocessing reaction zone.

In a network computer system, recovery may be impossible from a fault when the fault occurs in a network switch in a network or a device such as an external disk device. Provided is a computer system that includes a plurality of servers, a plurality of networks, a plurality of external disk devices, and a management computer, in which the management computer detects a fault which is occurred, retrieves an application stop server inaccessible to the used disk due to the fault, retrieves the disk for storing the same contents as contents stored in the disk used by the retrieved application stop server and the external disk device including the disk, retrieves an application resuming server capable of accessing the retrieved external disk device, and transmits an instruction to boot by using the retrieved disk to the retrieved application resuming server.

A stream encryption device generates a first pseudo random number sequence from key information, generates a second pseudo random number sequence according to clock control performed according to the first pseudo random number sequence, and subjects it to a nonlinear function calculation, thereby generating a key stream. The stream encryption device performs XOR operation with a plain text so as to create an encrypted text.

A stream encryption device generates a first pseudo random number sequence from key information, generates a second pseudo random number sequence according to clock control performed according to the first pseudo random number sequence, and subjects it to a nonlinear function calculation, thereby generating a key stream. The stream encryption device performs XOR operation with a plain text so as to create an encrypted text.

A virtual computer system executes a virtual computer control program on a physical computer and thereby causes guest programs on the logical partitions, respectively. The virtual computer control program includes an error recovery module to periodically recover from an error in a cache memory, an error interruption handler module responsive to an interruption notice caused by an error which has occurred in the cache memory, to recover from an error in the cache memory, and an error data initialization module to recover from an error in the cache memory with shutdown or restart of one of the logical partitions as a momentum. And the virtual computer control program conducts recovery processing from an error in the cache memory.

The recovery of solids, and particularly solid particulates used as catalysts in slurry hydroprocessing, from asphaltene containing hydrocarbons is improved by controlling asphaltene precipitation. The formation of agglomerates of the solid particulates, having an increased diameter, results in the presence of precipitated asphaltenes, possibly due to flocculation. Asphaltene precipitation is controlled by varying process parameters or introducing additional diluent or flush streams that change the polarity of an asphaltene containing liquid product recovered from an effluent of a slurry hydroprocessing reaction zone.

The invention describes an improved process for deep desulfurization of a gas-oil-type hydrocarbon fraction that comprises a catalytic hydrodesulfurization unit that is preceded by a unit for adsorption of the nitrogen compounds that inhibit the hydrodesulfurization reaction.

The invention describes an improved process for deep desulfurization of a gas-oil-type hydrocarbon fraction that comprises a catalytic hydrodesulfurization unit that is preceded by a unit for adsorption of the nitrogen compounds that inhibit the hydrodesulfurization reaction.

A fuel cell system includes: a fuel cell that generates electricity by an electrochemical reaction of a fuel gas with an oxidant gas; a supply channel that supplies the fuel gas to an anode; a recycle channel that supplies an anode off-gas discharged from the anode, as the fuel gas, to the supply channel; a discharge channel that is connected to the recycle channel between the anode and the circulation pump, that is arranged in the recycle channel, and that discharges the anode off-gas to outside; a controller that brings a purge valve, that is provided on the discharge channel, into an open state and determines whether a purge operation to discharge the anode off-gas to the outside is abnormal, and performs an operation to decrease a flow rate of the fuel gas supplied to the anode when determining that the purge operation is abnormal.

A transmission cancellation section is provided on a bus connecting a master and a slave. During a reset of the master, the transmission cancellation section blocks the bus so that an invalid command flowing on the bus does not reach the slave and executes, instead of the master stopped by the reset operation, generation of data which corresponds to an access request command already output to the slave and is to be sent to the slave and receiving of data from the slave.

A stream encryption device generates a first pseudo random number sequence from key information, generates a second pseudo random number sequence according to clock control performed according to the first pseudo random number sequence, and subjects it to a nonlinear function calculation, thereby generating a key stream. The stream encryption device performs XOR operation with a plain text so as to create an encrypted text. The stream encryption device performs an encryption process in units of words by using a clock controller. It includes: a first pseudo random number generation means to generate a first pseudo random number sequence from key information; a second pseudo random number generation means to generate a second pseudo random number sequence based on clock control performed according to the first pseudo random number sequence; and, a keystream generation means to generate a keystream by applying a nonlinear function calculation to the second pseudo random number sequence.

The present invention relates to a process, method and plant for recovering scandium and ions containing scandium using an ion exchange resin from a feed stream. The feed stream may be, but is by no means limited to, a leach liquor or leach pulp.

Processes for the production of chlorinated propenes are provided. The present processes make use of 1,2-dichloropropane, a by-product in the production of chlorohydrin, as a low cost starting material. 1,1,1,2,2-pentachloropropane produced by the process is subjected to catalytic dehydrochlorination and build-up of the same within the process is avoided.

An oven for elimination of harmful organisms which pose phytosanitary risks and are present in material of plant origin in the form of particles is provided. The oven includes: (a) first and second circular plates mounted in rotation about an axis Z, the surface of said plates being perforated and permeable to air and water, (b) a means for transferring the collected particles from the first plate to the second plate, and (c) a gas-blowing means forming a closed gas cycle. The gas-blowing means includes a blower for accelerating a flow of gas and directing it towards a heating station in order to heat the gas and directing it parallel to the axis Z towards the first plate, passing through the perforated surface of the first plate, then directly afterwards through the perforated surface of the second plate, in order to return to the blower and recommence the gas cycle.