Abstract: A display memory having a DRAM port and a serial port, a video controller including a host graphics controller having a bus port, a lookup table and a digital-to-analog converter for receiving lookup table data from the lookup table and converting it into signals reproducible by a display, the DRAM and serial ports being multiplexed to a combined bus, the combined bus being connected to the bus port of the graphics controller, the lookup table having an input for receiving data from the combined bus, apparatus for causing passage of serial data along the bus from the display memory in higher priority than any other data for provision of display data to the lookup table whereby the lookup table can provide the lookup table data to the digital-to-analog converter.

Abstract: Apparatus for rotating a test tube in an NMR device which allows sufficient frictional force to be applied to the test tube to rotate it at a desired speed and which allows the test tube to be inserted in and removed from the NMR device while the motor is rotating.

Abstract: A nuclear magnetic resonance device in which a test sample can be excited with selective pulses of electromagnetic energy so as to cause the generation of a frequency domain spectrum signal that includes only preselected blocks of information.

Abstract: A box for used plastic glasses includes a container (2,23), on the upper part of which there is a diaphragm (3,20), the surface (4) of which presents a plurality of holes (5,21). To each hole corresponds a guide (8,25) for guiding the glasses, which guide is constituted by one or more vertical elements, the guide projecting toward the inner part of the container (2,23). These guides (8,25) cause the piling up one into the other of a plurality of glasses (11) which are inserted into the holes (5,21) of the diaphragm by force of gravity.

Abstract: A stone burying attachment for a finish grading landscape machine is disclosed wherein the attachment is optionally mounted to the frame of the machine to create a furrow immediately forwardly of the discharge side of the machine to permit a burying of stones and other unwanted debris collected by the landscape machine during operation thereof. The stone burying attachment is positionally adjustable between operative and inoperative positions to permit a selective engagement thereof at the discretion of the operator. The attachment includes a disc positioned angularly with respect to the direction of travel and also positionable at varying heights in the operative position for selectively varying the desired depth of the furrow being formed thereby. A breakaway feature protects the attachment if the disc engages an immovable object.

Abstract: This gas-powered apparatus comprises a substantially cylindrical combustion chamber having an inlet for the combustion air connected to the outside and an upper outlet connected to a burned gas flue. A tank is arranged around the combustion chamber and defines therewith an interspace, so that the water in the tank can be heated substantially by radiation. The interspace is downwardly connected to a duct having an opening for a fan sucking air from the enclosed space through the interspace and returning it to the enclosed space.

Abstract: In a surface reflectance meter for directing light to a surface, receiving light reflected from the surface and measuring the rate of change of light flux upon withdrawal of a light chopper from the optical path, a fault detection means which detects and indicates a fault in the flux rate of change measurement is disclosed. In the preferred embodiment the rate of change of flux is detected by measuring the time for the light intensity to increase from a first to a second predetermined intensity and the fault detector means detects and indicates a fault when the light intensity does not reach the second predetermined intensity within a predetermined period of time. The surface reflectance meter is reset for repetition of the measurement upon indication of a fault. This invention is useful in portable surface reflectance meters which must be hand held to the surface to be measured, because instability in holding the meter to the surface can cause the fault.