Abstract: A wave enhancer of this invention may be employed with a wave power collection system. This system converts the movement of ocean waves into useful energy. In order to convert the energy of the ocean waves into useful energy, the wave power collection system may have a float that floats on the surface of the ocean. Coupled to the float may be a mechanism for converting the movement of the float into another form of energy. This mechanism may be a hydraulic system that causes the up and down movement of the float to pressurize a hydraulic fluid. This pressurized hydraulic fluid can be used to power a prime mover, which in turn can drive a load, such as an electrical generator.The wave enhancer of this invention increases the amplitude of a given wave. This increase in amplitude causes a corresponding increase in the amount of energy that can be extracted from a given wave. In a preferred embodiment, the wave enhancer includes a plate that is disposed on a cylinder of the wave power collection system.

Abstract: A disk cartridge, for use in a disk drive, has a shutter for opening and closing over a disk access opening. A compression spring provides a force to bias the shutter to a closed position. The spring is coupled at one end to the shutter and follows an arcuate path substantially concentric with the disk within the cartridge.

Abstract: The present invention is directed toward methods of identifying compounds which inhibit the human immunodeficiency virus (HIV) viral protein R (Vpr) from stimulating the differentiation of undifferentiated cells. This invention takes advantage of the observation that cell lines from rhabdomyosarcomas, which are tumors of muscle origin, have been used as models of CD4-independent HIV infection. These cell lines can be induced to differentiate in vitro. The vpr gene of HIV-1 is sufficient for the differentiation of the human rhabdomyosarcoma cell line TE671. Differentiated cells are characterized by great enlargement, altered morphology, lack of replication, and high level expression of the muscle-specific protein myosin. Morphological differentiation and inhibition of proliferation of other transformed cell lines following vpr expression was also observed. This invention also relates toward methods of identifying compounds which inhibit HIV Vpr binding to Gag.

Abstract: A goods vehicle has a body with upper and lower load-bearing floors and each mounted for vertical movement within the body. The upper floor is raised and lowered by a hoist. Telescopic links connect the two floors such that when the upper floor is less than a certain height above the lower floor it can move independently of the lower floor, but when the upper floor is lifted above such height it entrains the lower floor and the two floors move together. In another embodiment the two floors are fixed together for movement together over the full range of vertical movement of the upper floor.