摘要:
The present invention provides a method of human gene therapy using AAV vectors with essentially wildtype phenotype. Genes of 900 bases or less can be inserted into wildtype AAV and still allow the resulting vector to have a largely wildtype phenotype. For example, several antisense genes could be inserted and still allow packaging. Such wildtype vectors have several advantages. First, high titers of such vectors is easy to accomplish. Second, the vectors, since they include the Rep78 gene, integrate specifically into human chromosome 19. Third, such vectors, being wildtype, spread after their initial introduction. Another method for use of large wildtype AAV genomes is as complementors for fully defective AAV vectors. Such complementors can be delivered by virus infection and, be introduced easily into 100% of the cells used to produce virus. Viral infection is superior to synthetic techniques for introducing DNA into tissue culture producer cells. When large essentially wildtype AAV complementor virus are used in conjunction with AAV vector virus allowing for the introduction of both vectors into all cells, high titers of recombinant AAV virus is achieved.
摘要:
A system for actuating a clutch that alternately driveably connects and disconnects components, includes a clutch having a piston that includes a first apply area and a second apply area, a fluid pressure source, a source of variable control pressure, and a control coupled with the fluid pressure source and operative in response to the control pressure to engage the clutch initially by increasing pressure steadily at the first apply area up to a first magnitude followed by a rapid increase in pressure at the first apply area and the second apply area above the first magnitude to a second magnitude.
摘要:
An assembly for a hydraulically actuated automatic transmission comprising a balance dam, a carrier partially enclosing the balance dam, and a pinion shaft secured to the carrier having a fluid passage interconnecting the balance dam and an outer surface of the pinion shaft. Fluid exiting the passage is used to lubricate a bearing supported on the pinion shaft.
摘要:
A reconfigurable computing system for accelerating execution of floating point intensive iterative applications. The reconfigurable computing system includes a plurality of interconnected processing elements mounted on a printed circuit board, a host processing system for displaying real-time outputs of the floating point calculations performed by the processing elements, and an interface for connecting the processing elements to the host system. Each of the interconnected processing elements includes a floating point functional unit, operand memory, control memory and a control unit. The floating point functional unit includes a multiply accumulate function. The operand memory includes a plurality of banks of static random access memory. The processing elements are interconnected using a nearest neighbor or hierarchical implementation. The instruction set performed by the floating point functional unit includes arithmetic, control and communication instructions. The interface can be implemented as a PCI bus interface using a field programmable gate array or as an AGP bus interface.
摘要:
The present invention relates to the synthesis of intermediates for the preparation of compounds of formula (A): wherein n is 2 or 3 and various salt forms of these compounds. The compounds of formula (A) are useful as ανβ3 receptor antagonists.
摘要:
A system for actuating a clutch that alternately driveably connects and disconnects components, includes a clutch having a piston that includes a first apply area and a second apply area, a fluid pressure source, a source of variable control pressure, and a control coupled with the fluid pressure source and operative in response to the control pressure to engage the clutch initially by increasing pressure steadily at the first apply area up to a first magnitude followed by a rapid increase in pressure at the first apply area and the second apply area above the first magnitude to a second magnitude.