This invention relates to an improved method for the multi-parameter analysis of cells from peripheral blood or bone marrow. The method uses a nucleic acid dye, at least two fluorescently labelled monoclonal antibodies and at least two light scatter parameters to differentiate and discriminate between and among different cells in the blood or bone marrow.

Flow systems for photometric analysis of particles, such as biological cells, particularly for obtaining multidmensional slit-scan type contours, as well as other images. In one broad approach, fluorochrome-stained cells in suspension flow through a focused slit of laser excitation light defining a planar excitation region in the X-Y plane. As each fluorochrome-stained cell flows through the excitation region, fluorescence emissions are generated at the intersection of the excitation region and ...

A system for electrophoretic analysis includes four tanks, each of which carries an electrolytic solution which accesses a different edge surface of a pair of parallel gel plates. The gel plates include an electrophoretic separation path formed of a selected medium, e.g. an isoelectric focusing gel, extending in a space between the plates and across opposite edges of the plates. A pair of nonpolar barrier webs extend between the plates parallel to and on each side of the path. A different medium...

An apparatus and method for improving seismic resolution involving the application of scaling factors to seismic data which compensate for amplitude decay as a function of time, frequency and source-to-receiver distance (position). Each seismic trace associated with a common source-to-receiver distance is first separated into a plurality of frequency band-limited component traces. A time-variant amplitude scale factor (or its equivalent) is generated for each component trace. These scale factors...

A plurality of eccentric rotors are rotatably fitted between a fixed base and an output shaft on which an object to be vibrationproofed is mounted, the output shaft being supported movably in 3 to 6 Degree-of-Freedom, magnet spring mechanisms are provided on fitted wall surfaces between the fixed base and the eccentric rotor, a composite vibrationproof adjusting spring is provided between the fixed base and the output shaft, the magnet spring mechanism responding to a fine displacement of the ou...

A multi-dimensional adaptive method and system which can be forced to converge to any predetermined solution of interest. Disturbances are input to the system along with reference signals. Error sensors (detectors) receive the disturbances and the cancelling signals and output error signals. Compensation is determined such that the compensation converges to an arbitrary solution, is not unique and is Hermitian and positive definite.

A method for a multidimensional search for a close neighbor of an input vector, amongst a first set of reference vectors, comprises the prior determination of a first set of hyperplanes in the space containing the reference vectors, then selection of a first hyperplane from the first set, formation of a second set of reference vectors, by eliminating reference vectors which are on the other side of the first hyperplane selected, compared with the input vector, formation of a second set of hyperp...

An on-line multidimensional system which includes a liquid chromatograph having an on-line connection to a pyrolysis probe, which in turn has on-line connection to a gas chromatograph. Preferred applications use a size-exclusion chromatograph coupled to a pyrolysis probe coupled to a gas chromatograph to simultaneously produce composition as a function of molecular weight/size information for polymeric materials.

Multidimensional oligomers of the present invention are surprisingly useful for advanced composites because each generally has a use temperature greatly in excess of its curing temperature. The oligomers have essentially no arms, and comprise crosslinking phenylimide end caps condensed directly onto an aromatic hub (preferably, phenyl) through "commodity" polymeric linkages, such as amide, diimide, ether, or ester. For example, p-nadicimidobenzoylchloride can be condensed with triaminobenzene to...

A hybrid mouse combining the usual x and y motion signals usually found in mice together with additional degrees of freedom, particularly a z-axis signal. The z-axis signal is generated by a roller whose turning motion is sensed by a shaft angle encoder, including a light chopper. Additional degrees of freedom may be provided by tilting the roller left and right to actuate switches. Actuation of each switch, together with pulse counts from the roller may be used to indicate pitch and roll. A yaw...