Abstract: In a disk array system, such as a RAID system, when disks are added thereto, this invention rearranges data without requiring a back-up of the stored data. When new data storage units are added into a RAID system in which each data storage unit is a row and an address range of the data storage unit is a column, a new striping rule dependant on the number of data storage units in the system, inclusive of newly added unit, is determined. Data are rearranged in the storage areas according to the new striping rule. In rearranging one row according to the new striping rule, the data involved in the transfer to one row from the other row, continues to be stored as a place holder block. Data that has been rearranged is accessed according to the new striping rule which data that has not been rearranged is accessed according to the old striping rule.

Abstract: Novel proline derivatives of the following formula (I) ##STR1## wherein each symbol is as defined in the specification, which specifically inhibit prolyl endopeptidase activity and can be used for the prevention and/or treatment of dementia and amnesia as agents which act directly on the central symptoms of dementia.

Abstract: Novel peptide derivatives of the following formula ##STR1## wherein each symbol is as defined in the specification, pharmaceutically acceptable acid addition salts thereof and analogous copounds thereof.Since the derivatives and their pharmaceutically acceptable acid addition salts of the present invention possess stronger actions on central nervous system (e.g. antagonistic action against hypothermia, locomotor stimulant action, signal reflex stimulant action), they are of use as a therapeutic medicament for central nervous disorders such as impaired consciousness, depression, hypomnesia, the like in association association with schizophrenia, melancholia, senile dementia, sequelae of cerebrovascular disorders, head trauma, epilepsy and spinocerebellar degeneracy.

Abstract: Amino acid derivatives of the formula ##STR1## wherein: Q is W--(CH.sub.2).sub.m --(A).sub.n --CO--B-- whereinA is oxygen atom or --NH--;B is ##STR2## or --(CH.sub.2).sub.l -- wherein X is sulfur atom or --CH.sub.2 --, and l is an integer from 1 to 3;W is ##STR3## wherein Hal is halogen atom; n is an integer of 0 or 1; andm is an integer from 0 to 3;Y is sulfur atom or --CH.sub.2 --; andR is hydrogen atom, formyl group, C.sub.1-5 alkoxycarbonyl group, --C.tbd.N or ##STR4## wherein R.sup.1 is hydrogen atom, andR.sup.2 is hydroxyl group, C.sub.1-5 alkylcarboxy group, phenylcarboxy group, C.sub.1-5 alkoxy group or phenyl C.sub.1-5 alkoxy group;with the proviso that when R is hydrogen atom, formyl group or C.sub.1-5 alkoxycarbonyl group, W is ##STR5## The compounds mentioned above specifically inhibit prolyl endopeptidase activity and are useful as agents for the treatment and prevention of dementia and amnesia.

Abstract: A combing cylinder of a comber in spinning machinery has a combing cylinder having grooves having substantially rectangular cross-sectional shapes at regular intervals, each of the grooves having a small groove, and a plurality of laminated needle plate members having concave recessed portions at a position corresponding to the position at which the small groove is provided. An anti-slip member is locked in a space formed by the concave recessed portions and the small groove. The laminated needle plate member is formed by laminating needle plates, each having a concave recessed portion at one side of a needle inserting part and a connecting member locking part in which a connecting member is fixed.

Abstract: A combing roller for an open-end spinning machine which utilizes whirling airflow. The roller has on its circumferential surface and in its axial direction dovetail grooves, in which needle plate laminated members which have needle rows in the axial direction of the roller are removably mounted so that each needle row can be mounted and removed simply. The needle plate laminated member is made by connecting together in a row a plurality of needle plates, with a spacer between adjoining ones in some cases, by a connecting member. The needle plate has at its upper part a needle base portion with at least one needle head and at its lower part a needle insertion portion with a dovetail shape to be fitted in a dovetail groove with the roller, having at the substantially central part of its bottom a part in which the connecting member is inserted and fastened.