Abstract: The present invention provides a hutch having a pair of opposed sidewalls and a back wall and a shelf having a first planar surface extending between the sidewalls supported by four support panels each having a second planar surface transverse to the first planar surface.

Abstract: The present invention provides a hutch having a pair of opposed sidewalls and a back wall and a shelf having a first planar surface extending between the sidewalls supported by four support panels each having a second planar surface transverse to the first planar surface.

Abstract: The present invention provides a hutch having a pair of opposed sidewalls and a back wall and a shelf having a first planar surface extending between the sidewalls supported by four support panels each having a second planar surface transverse to the first planar surface.

Abstract: The present invention provides a hutch having a pair of opposed sidewalls and a back wall and a shelf having a first planar surface extending between the sidewalls supported by four support panels each having a second planar surface transverse to the first planar surface.

Abstract: The present invention provides a hutch having a pair of opposed sidewalls and a back wall and a shelf having a first planar surface extending between the sidewalls supported by four support panels each having a second planar surface transverse to the first planar surface.

Abstract: The present invention provides a hutch having a pair of opposed sidewalls and a back wall and a shelf having a first planar surface extending between the sidewalls supported by four support panels each having a second planar surface transverse to the first planar surface.

Abstract: The present invention provides a hutch having a pair of opposed sidewalls and a back wall and a shelf having a first planar surface extending between the sidewalls supported by four support panels each having a second planar surface transverse to the first planar surface.

Abstract: The present invention provides a hutch having a pair of opposed sidewalls and a back wall and a shelf having a first planar surface extending between the sidewalls supported by four support panels each having a second planar surface transverse to the first planar surface.

Abstract: The present invention provides a hutch having a pair of opposed sidewalls and a back wall and a shelf having a first planar surface extending between the sidewalls supported by four support panels each having a second planar surface transverse to the first planar surface.

Abstract: The present invention provides a hutch having a pair of opposed sidewalls and a back wall and a shelf having a first planar surface extending between the sidewalls supported by four support panels each having a second planar surface transverse to the first planar surface.

Abstract: The present invention provides a hutch having a pair of opposed sidewalls and a back wall and a shelf having a first planar surface extending between the sidewalls supported by four support panels each having a second planar surface transverse to the first planar surface.

Abstract: The present invention provides a hutch having a pair of opposed sidewalls and a back wall and a shelf having a first planar surface extending between the sidewalls supported by four support panels each having a second planar surface transverse to the first planar surface.

Abstract: A method for selecting a cell from each member of a tri-cell photodetector array used to detect optical signals output from a multichannel sensor array to indicate interference between two optical signals of unknown polarization incident upon the tri-cell photodetector array comprises selecting a cell in each tri-cell photodetector and collecting a selected number of samples of the signal output for each cell. Each sample has an in-phase AC component I and a quadrature AC component Q. An amplitude sum signal E=I*I+Q*Q is calculated for a predetermined number of samples in the selected number of samples of the signal output for each cell. The signal output of cell in each tri-cell photodetector having the largest value of the amplitude sum signal is selected for further processing.

Abstract: Apparatus for eliminating sign uncertainty in a coherent phase generated carrier demodulator in a multi-channel sensor system has a downconverter array arranged to separate the in-phase component I and the quadrature phase component of the sensor output for each channel. A coordinate transformer uses the in-phase component and quadrature phase component to calculate an arctangent for the phase angle for each channel. A digital signal processor adds 180° to each arctangent calculation for which the tangent is a negative number.

Abstract: Apparatus for eliminating sign uncertainty in a coherent phase generated carrier demodulator in a multi-channel sensor system has a downconverter array arranged to separate the in-phase component I and the quadrature phase component of the sensor output for each channel. A coordinate transformer uses the in-phase component and quadrature phase component to calculate an arctangent for the phase angle for each channel. A digital signal processor adds 180° to each arctangent calculation for which the tangent is a negative number.

Abstract: A method for selecting a cell from each member of a tri-cell photodetector array used to detect optical signals output from a multichannel sensor array to indicate interference between two optical signals of unknown polarization incident upon the tri-cell photodetector array comprises selecting a cell in each tri-cell photodetector and collecting a selected number of samples of the signal output for each cell. Each sample has an in-phase AC component I and a quadrature AC component Q. An amplitude sum signal E=I*I+Q*Q is calculated for a predetermined number of samples in the selected number of samples of the signal output for each cell. The signal output of cell in each tri-cell photodetector having the largest value of the amplitude sum signal is selected for further processing.

Abstract: This invention relates to the construction and use of plasma arc furnaces; more particularly it relates to a transferred arc mode of operation in such furnaces. In more detail a plasma arc furnace according to this invention comprises at least two stationary plasma torches positioned at or near the upper end of a furnace chamber and directed downwardly at an inclined angle towards an electrically conducting vessel for containing melt produced in the furnace and at least one electrical return anode connection made to said vessel at a point above the point of coalescence of the arcs produced, in use, by the torches.

Abstract: This invention relates to the recovery of metallic values from materials such as catalysts containing or supporting the values. The method comprises removing a layer or layers and a catalyst support including a quantity of the metallic value and thereafter chemically or otherwise separating the value therefrom.