Abstract: An apparatus for automated preparation of DNA samples which comprises a reactor for preparing DNA samples and adjacent thereto an enzyme supply section, a plate holding section, a nozzle sealing section and a cleaning tank section, and wherein plates are loaded onto or unloaded from said plate holding section by means of a transport robot.

Abstract: In a hierarchical multiprocessor system in which a plurality of clusters, each of which is a multiprocessor wherein a plurality of processors share a memory, each of data collecting units 31 of master processors 10-1 and 20-1 in clusters 10 and 20, respectively, collects at regular. time intervals data to be transferred from its own cluster to the other cluster; transferable data generating units 32 generates combined transferable data by putting together the remaining data after the removal of duplicates from the collected data; transferable data transfer units 33 transfers the generated combined transferable data to the master processor in the destination cluster; transferable data receiving units 34 receives combined transferable data transferred from the master processor in another cluster; and transferable data distributing units 35 distributes the received combined transferable data to processors in its own cluster.

Abstract: The improved fluorescence detector comprises a tubular electrophoretic device through which a sample labelled with four kinds of fluorescent dye is caused to migrate, illumination optics for illuminating the tubular electrophoretic device with exciting light and detection optics for detecting the fluorescence emitted from the sample illuminated with the exciting light and it is characterized in that a plurality of tubular electrophoretic devices (1) are arranged in a row, a plurality of graded-index lenses (9) are arranged parallel to and in the same number as said plurality of tubular electrophoretic devices (1), each lens array being composed of four vertically stacked graded-index lenses, a plurality of bandpass filter arrays (11) are also arranged parallel to and in the same number as said plurality of electrophoretic devices (1), each filter array being composed of four filters arranged vertically in a row, and a light-receiving element of a planar type (13) is provided at the back of the rows of said ba

Abstract: An initial value for each processor of a multiprocessor system is set using a specified calculating expression. The system determines a random number calculating expression using a multiplicative congruence method so that random numbers generated from these initial values may make a sequence of random numbers in series, and generates random numbers using the calculating expression. The system permits the adding of a processor in the middle of generation of random numbers by making equal to one another the number of random numbers generated by the existing processors, setting an initial value in each processor on the basis of the total number of already generated random numbers, and generating random numbers according to a sequence of random numbers prior to adding the processor until reaching a specified total number of random numbers to be generated.