Abstract: An apparatus for making holes in plastic along a ridge row has a frame with wheels spanning a ridge row, a furrow reference wheel centered in the frame adapted to roll on soil surface between two raised ridge rows, a first vertically translatable mechanism positioned at a distance to a first side of the furrow reference wheel to be directly over the ridge row adjacent the furrow reference wheel, the vertically translatable mechanism having a first electrically-heated hole punch element at a lower extremity, and a control system having a power supply, sensors and actuators for managing operation of the apparatus. As the apparatus is towed, the furrow reference wheel triggers signals to the control system to activate the vertically translatable mechanism at repeated intervals to descend and make holes in the plastic covering on the raised ridge row.

Abstract: The present invention relates to a system and method for using discrete photon counting to produce transmission radiographic images of a target object with improved spatial resolution and high system sensitivity. The system comprises a radiation source for directing photons at a target object and a detector array for receiving photons passing through the target in order to provide an image of the target density. The detector array is configured to enhance spatial resolution and maintain high system sensitivity. To correct the parallax effect that may be induced by such configuration of the detector array, a process can be computer implemented or program coded to parallax correction.

Abstract: The present invention relates to a system and method for using discrete photon counting to produce transmission radiographic images of a target object with improved spatial resolution and high system sensitivity. The system comprises a radiation source for directing photons at a target object and a detector array for receiving photons passing through the target in order to provide an image of the target density. The detector array is configured to enhance spatial resolution and maintain high system sensitivity. To correct the parallax effect that may be induced by such configuration of the detector array, a process can be computer implemented or program coded to parallax correction.

Abstract: A method and apparatus for facilitating the formation of dental castings utilizing a dental impression tray. A collar assembly is provided which is substantially oval and forms an upstanding peripheral enclosure around the dental impression tray. A rod transversely spans across the oval member and is retained in notches at the upper edge of the oval member. The rods pass through spherical coupling members from which depend dowel pins which can enter into the negative impression and are used for retaining the teeth which are subsequently formed by a casting process.