Abstract: Techniques perform failure recovery of a storage device. The techniques involve: determining, based on failure data indicating at least one failed disk, whether the at least one failed disk comprises a system disk associated with an extent pool of the storage device, the extent pool being built based on system disks and user disks; in response to determining that the at least one failed disk comprises a system disk, rebuilding the user data of the system disk to one or more further disks associated with the extent pool; and in response to the system disk being replaced with an updated system disk, restoring the rebuilt user data from the one or more further disks to the updated system disk, an association of the system disk with the extent pool being maintained until the system disk is replaced by the updated system disk.

Abstract: Techniques provide for data rebuilding in a storage system. The techniques involve: in response to failure of a first disk in the storage system, determining a second disk having a high risk of failure in the storage system; determining whether the second disk contains a second data block that is associated with a first data block to be rebuilt in the first disk, the first and second data blocks being from a same data stripe in the storage system; and in response to determining that the second disk contains the second data block and the second data block has not yet been replicated into a third disk for backup in the storage system, reading the second data block from the second disk to rebuild the first data block, and replicating the read second data block into the third disk.

Abstract: Techniques perform data recovery. The techniques involve: in response to receiving to-be-written data at a first cache module, storing metadata in the data into a first non-volatile cache of the first cache module. The techniques further involve storing user data in the data into a first volatile cache of the first cache module. The techniques further involve sending the metadata and the user data to a second cache module for performing data recovery on the user data. Accordingly, a larger and better guaranteed data storage space may be provided to a cache data backup/recovery system without a need to increase the battery supply capacity and even without a battery.

Abstract: Techniques for managing a storage system involve: in response to a storage device in a group of storage devices failing, determining multiple stripes in the storage system which are associated with the failed storage device; selecting a first storage device and a second storage device from the group of storage devices respectively, the first storage device and the second storage device being a first candidate and a second candidate of storage devices for rebuilding a first stripe and a second stripe among the multiple stripes to form a first rebuilt stripe and a second rebuilt stripe respectively; obtaining a coupling degree between the first rebuilt stripe and the second rebuilt stripe, the coupling degree describing a conflict degree of rebuilding the first stripe and the second stripe in parallel; and identifying the first candidate and the second candidate on the basis of the obtained coupling degree.

Abstract: Deuterated polymer-biomolecule conjugates and the synthesis and use of deuterated polymer-biomolecule conjugates for detecting the location of specific molecules, e.g., cell surface molecules, in a subject, and for imaging various processes within the body, for detecting the location of molecules associated with disease pathology, and for monitoring disease progression are disclosed.

Abstract: A computer-executable method, system, and computer program product for managing meta-data in a distributed storage system, wherein the distributed storage system includes one or more burst buffers enabled to operate with a distributed key-value store, the co computer-executable method, system, and computer program product comprising receiving a request for meta-data associated with a block of data stored in a first burst buffer of the one or more burst buffers in the distributed storage system, wherein the meta data is associated with a key-value, determining which of the one or more burst buffers stores the requested metadata, and upon determination that a first burst buffer of the one or more burst buffers stores the requested metadata, locating the key-value in a portion of the distributed key-value store accessible from the first burst buffer.

Abstract: A processing platform of an information processing system comprises one or more processing devices and implements a key-value store that utilizes a skip list data structure having a plurality of layers each having two or more nodes, with each of at least a subset of the nodes of the skip list data structure storing a corresponding ranged key having a range of keys associated therewith. A given one of the ranged keys corresponds to a single value stored in the key-value store and comprises a lower key and an upper key of the range of keys but does not explicitly include intermediate keys in the range of keys. A burst buffer appliance may be associated with the key-value store and configured to process ranged keys of one or more skip list data structures for storage in or retrieval from the key-value store.

Abstract: Techniques are provided for shard reorganization in sharded storage systems based on a user-specified dimensional description or key range information. An exemplary method processes data in a sharded distributed data storage system that stores data in a plurality of shards by obtaining a dimensional description for a shard reorganization of the data in the sharded distributed data storage system from a user; and reorganizing a storage of the data on one or more nodes of the sharded distributed data storage system based on the dimensional description. The dimensional description comprises, for example, a semantic description of desired array dimensions or key range information. The semantic description of desired array dimensions comprises a striping of a given data array along one or more of a horizontal face, a vertical face and a sub-array of the given data array. The reorganization can be employed, for example, for key-value objects and multidimensional array objects.

Abstract: Disclosed are biodiesel fuels with improved oxidative stability. Disclosed are biodiesel fuels which comprise two or more antioxidants which increase the oxidative stability of the biodiesel fuel.

Abstract: Disclosed are biodiesel fuels with improved oxidative stability. Disclosed are biodiesel fuels which comprise two or more antioxidants which increase the oxidative stability of the biodiesel fuel.

Abstract: A method of inducing tag lines in an MRI image is provided which allows adjustment of tag line width and spacing. The method includes determining a desired tag line width (505) and then selecting a parameter of a SINC modulating function, such as main lobe bandwidth, in accordance with the desired tag line width. The method also includes determining a desired tag line separation (51) and selecting a parameter of an ARF pulse train based upon the desired tag line separation. A gradiant field is applied to the specimen being imaged. The RF pulse train is modulated in accordance with the SINC modulating function (520) and the modulated RF pulse train is applied to the specimen being imaged prior to an image acquisition operation. In one embodiment of the invention, the gradiant is activated between pulses of the RF pulses.

Abstract: A method of inducing tag lines in an MRI image is provided which allows adjustment of tag line width and spacing. The method includes determining a desired tag line width and then selecting a parameter of a SINC modulating function, such as main lobe bandwidth, in accordance with the desired tag line width. The method also includes determining a desired tag line separation and selecting a parameter of an RF pulse train based upon the desired tag line separation. A gradient field is applied to the specimen being imaged. The RF pulse train is modulated in accordance with the SINC modulating function and the modulated RF pulse train is applied to the specimen being imaged prior to an image acquisition operation. In one embodiment of the invention, the gradient is activated between pulses of the RF pulse train and is deactivated during the RF pulses.

Abstract: A method of inducing tag lines in an MRI image is provided which allows adjustment of tag line width and spacing. The method includes determining a desired tag line width and then selecting a parameter of a SINC modulating function, such as main lobe bandwidth, in accordance with the desired tag line width. The method also includes determining a desired tag line separation and selecting a parameter of an RF pulse train based upon the desired tag line separation. A gradient field is applied to the specimen being imaged. The RF pulse train is modulated in accordance with the SINC modulating function and the modulated RF pulse train is applied to the specimen being imaged prior to an image acquisition operation. In one embodiment of the invention, the gradient is activated between pulses of the RF pulse train and is deactivated during the RF pulses.