Abstract: A device for repeated intradermal injections within an organic tissue. The device comprises a support defining an internal housing for receiving a vial containing an aqueous solution, a source of pressurized air in fluid communication with the vial, a tube defining a pressurized solution path, a hollow injection needle, an injection head, a driven element with a distal end connected to the injection head, an actuator connected to the driven element, and a valve in fluid communication with the pressurized solution path for controlling a flow of the pressurized solution into the tube from the vial up to the distal end of the hollow injection needle.

Abstract: Abrasive articles including a non-woven web of staple fibers that form a single layer that is free of any additional layers of non-woven webs of staple fibers. The abrasive articles contain abrasive particles bound to the non-woven web. The abrasive articles can be compressed abrasive articles that include a non-woven web of staple fibers, including blends of staple fibers having a first portion of fibers having a first linear density and a second portion of fibers having a second linear density.

Abstract: A surface-treating article includes an organic matrix substantially engulfed by a binder that includes a reaction product of a blocked polyurethane prepolymer and a mixture of aromatic amines. The aromatic amines include polymethylene polyaniline having a functionality equal to or greater than 4.

Abstract: An abrasive article includes a support, a first polymeric binder, a second polymeric binder, and abrasive particles. The support includes a plurality of nonwoven layers. A method of forming an abrasive article includes providing a support including, applying a first coating of the first polymeric binder to the support, applying superabrasive particles to the coated support, applying a layer of a second polymeric binder overlying the superabrasive particles. The method further includes compressing the support and applying heat to cure the first polymeric binder. A method of preparing a work piece includes applying a thermal spray coating to the work piece, and polishing the thermal spray coating with the abrasive article.

Abstract: Abrasive articles including a non-woven web of staple fibers that form a single layer that is free of any additional layers of non-woven webs of staple fibers. The abrasive articles contain abrasive particles bound to the non-woven web. The abrasive articles can be compressed abrasive articles that include a non-woven web of staple fibers, including blends of staple fibers having a first portion of fibers having a first linear density and a second portion of fibers having a second linear density.

Abstract: An abrasive article includes a support, a first polymeric binder, a second polymeric binder, and abrasive particles. The support includes a plurality of nonwoven layers. A method of forming an abrasive article includes providing a support including, applying a first coating of the first polymeric binder to the support, applying superabrasive particles to the coated support, applying a layer of a second polymeric binder overlying the superabrasive particles. The method further includes compressing the support and applying heat to cure the first polymeric binder. A method of preparing a work piece includes applying a thermal spray coating to the work piece, and polishing the thermal spray coating with the abrasive article.

Abstract: A surface-treating article includes an organic matrix substantially engulfed by a binder that includes a reaction product of a blocked polyurethane prepolymer and a mixture of aromatic amines. The aromatic amines include polymethylene polyaniline having a functionality equal to or greater than 4.

Abstract: A microinstruction error is detected in a microprogrammed digital data processor by providing for checking the presence of an error in an accessed microinstruction concurrently with the application of the accessed microinstruction to the microprocessor execution unit. If a microinstruction error is detected, microinstruction execution is aborted and a maintenance processor provides a correct microinstruction, following which operations are restarted. Provision is also made for detecting whether the error is a hard error and, if so, for substituting a spare microinstruction memory for the memory portion which caused the hard error.