Abstract: A method and apparatus for time encoded magnetic resonance imaging is presented. In accordance with the present invention, a static magnetic field oriented in a first direction is generated, with the sample to be imaged disposed within this static magnetic field, whereby the magnetization vector created by atomic particles is constant in size and direction as a result of the static magnetic field. The sample is then exposed to a first linear magnetic field gradient oriented in a second direction to define a slice. The sample is then excited with a radio frequency (RF) pulse, at the resonance frequency, the pulse being oriented in a third direction perpendicular to the first direction. This causes the magnetization vector of the atomic particles to rotate 90.degree. into a plane perpendicular to the first direction. The sample is then exposed to a two dimensional, non-uniform, magnetic field gradient oriented in a plane perpendicular to the first direction.

Abstract: A method and apparatus for nuclear magnetic resonance imaging of NMR chemical spectra is disclosed. A chemically nonhomogeneous sample is placed within a static uniform magnetic field. A spatially uniform radio frequency excitation field B.sub.1 is imposed on the sample at a nonzero angle relative to the static magnetic field. A spatially nonuniform radio frequency detection field is superimposed on the static magnetic fields in the same region as the excitation field. The spatially nonuniform radio frequency detection field has a cusp shape surrounding a point of negligible radio frequency detection sensitivity. The point of negligible radio frequency detection sensitivity is sequentially positioned at each of a plurality of different positions within the sample. Signals corresponding to radio frequency energy absorption or radiation by the sample volume at each position are detected. A spatial distribution of the chemical compounds within the sample is calculated based on the NMR spectra detected.

Abstract: A wave energy power generating process and apparatus is presented which takes advantage of the changing hydrodynamic pressure of ocean waves. The present invention comprises a fluid (preferably a gas) filled constant pressure reservoir positioned on land adjacent the ocean, i.e., the beach, which is connected by a hose or conduit to a submerged wave machine. The submerged wave machine consists of a water filled outer housing and a fluid filled inner flexible bladder. The housing includes at least one opening through a wall thereof communicating with the ocean. The opening includes at least one turbine therein which is connected to an electrical generator. When a wave crest flows above the wave machine, the water pressure over the housing and inner reservoir increases thereby collapsing the bladder. The collapse of the bladder will decrease the volume thereof and provide increased volume for ocean water.