Abstract:
A method of preventing and treating sepsis in a human or other mammal afflicted with sepsis comprising the administration of a safe and effective amount of a compound that inhibits the release of calcium from the sarcoplasmic and/or endoplasmic reticula, preferably dantrolene sodium or azumolene sodium.
Abstract:
A diagnostic assay for detecting the presence of an infectious herpes virus in a specimen and a genetically engineered cell line for use in such assay are disclosed. The cell line used in the assay expresses a reporter gene only if infectious herpes virus is present in the specimen. The assay involves inoculating a DNA-transfected cell line with a specimen suspected of containing a herpes virus, allowing a sufficient period of time for the herpes virus infectious cycle to proceed, and detecting and quantifying the number of herpes virus-infected cells to determine the number of infectious herpes virus virions in the specimen. The cell line is a DNA-transfected cell line susceptible to infection by a herpes virus which is stably transformed with a chimeric gene comprising a herpes virus inducible promoter and a gene coding for an enzyme, the expression of the enzyme being dependent upon and quantitatively proportional to the presence of herpes virus. A kit for such assay is also provided.
Abstract:
An ATM-Ethernet portel/concentrator (Figure 3) permits a transparent interconnection between Ethernet segments over an ATM network to provide remote connectivity for Ethernet segments. The portal includes an Ethernet controllor (22) and an ATM cell processor, both of which receive and transmit data to and from a dual port shared memory (24) under control of a direct memory access controller. A control microprocessor (20) monitors and controls the shifting of data through the dual port memory (24). In this scheme, original data is written and read directly into and out of the dual port memory (24) to thereby eliminate any requirement for copying of data, to thereby significantly increase the data throughput capability of the portal. In the concentrator embodiment (Figure 12), a plurality of Ethernet controllers, each of which is connected to its own associated Ethernet segment, is multiplexed through the concentrator to an ATM network to thereby provide remote connectivity for each of the Ethernet segments.
Abstract:
A bandwidth management and congestion control scheme for a multicast ATM network includes a buffer reservation mechanism (60) comprised of a state machine associated with each virtual circuit, the state machine adapted to monitor the number of available buffer slots at a data link (40, 42, 46) and an encoding scheme for cells of data in order to control switching from active to idle states. A state dependent token pool mechanism (70) associated with each virtual circuit generates tokens at varying rates which are 'used' by transmitted data in order to monitor the average data rate passing through a link (40, 42, 46) over a virtual circuit. By thus monitoring and controlling the peak and average data rates, the bandwidth for each data link (40, 42, 46) is efficiently managed to maximize throughput and minimize loss of cells. Means for determining the availability of capacity on a data link (40, 42, 46) for establishing a virtual circuit is also disclosed.
Abstract:
The present invention relates to methods of diagnosing peripheral neuropathies which comprises the steps of determining the titer of autoantibodies directed toward particular nervous system antigens. It also provides for substantially purified preparations of specific antigens, namely neuroprotein-1, neuroprotein-2, neuroprotein-3, neuroprotein-4, neuroprotein-5, neuroprotein-9 and histone H3 which may be used in such diagnostic methods.
Abstract:
A multi-cast switching system comprised of a pair of high speed data networks, each of said data networks being either a Benes network, a Clos network, or a Cantor network, and configured to provide point-to-point switching only in the first network and multi-cast switching in the second network, may be non-blocking for adding a multi-cast connection and re-arrangeably non-blocking for augmenting an existing multi-cast connection using the algorithm which essentially consists of identifying the most lightly loaded middle stage switch (Z), connecting the input to the middle stage switch (Z), and connecting the outputs to the middle stage switch (Z). A minimal speed advantage for each type of network is presented and thereby reduces the cost of each network in order to achieve non-blocking operation.
Abstract:
We have isolated and characterized a novel protein of pathogenic forms of Neisseria. We have also isolated and characterized genes which encode PilC, i.e., the pilC loci. Portions of the DNA sequences of the pilC genes are useful as probes to diagnose the presence of the relevant microorganisms containing type 4 pilin, for example, Neisseria in samples. These DNAs also make available polypeptide sequences of immunoreactive epitopes encoded within the loci, thus permitting the production of polypeptides which are useful as standards or reagents in diagnostic tests and/or as components of vaccines. Antibodies, both monoclonal and purified polyclonal, directed against PilC epitopes are also useful for diagnostic test and as therapeutic agents for passive immunization. In addition, by utilizing probes derived from the DNA sequences, it is possible to isolate and sequence other portions of the pilC loci from species and strains of interest.
Abstract:
A method and apparatus for generating a single, composite, anatomically aligned radiographic image from a prescription or reference image and a plurality of separate radiographic images includes an electronic display (30), a general purpose computer (20), a hard disk drive (22) for storing electronic data representative of the individual image and a mouse (28) to permit the on-screen designation of anatomical points for each image by an operator. The method includes the steps of designating a plurality of landmark points on each image, aligning the image to correlate to a reference image through alignment of the landmark points, scanning the image to detect the irradiated area, creating a summary image, and displaying the summary image over the reference image.
Abstract:
An endoscope (20) is disclosed which incorporates a plastic multi-fiber optic bundle assembly (22) for both illuminating and imaging tissue specimens. The bundle assembly (22) is comprised of a plastic multi-fiber optic bundle (28) surrounded by an individually cladded plastic optical fiber (30), with the bundle assembly (22) having a cross-section matching that of a single opening (24) extending through the length of the catheter (26) to thereby minimize the cross-sectional area of the catheter itself and optimize its flexibility. A multi-fiber optical bundle (28) used for imaging and apparatus and methods for forming the bundle (28) with arrays of individually cladded fibers (30) is disclosed. Several embodiments are disclosed of varying geometrical arrangements. An alternative embodiment is disclosed wherein a square multi-fiber imaging bundle (78) and four round illuminating fibers (80) are inserted through a generally circular opening (24) in the catheter (26). In still another embodiment, a mirror (86) or beam splitter (92) may be used to transmit illuminating as well as imaging light through a single multi-fiber bundle (84). In still another embodiment, a multi-fiber annular shaped guide (100) is used to transmit the illuminating light, and a method for forming it from a plurality of individually cladded plastic fibers (102) is disclosed.
Abstract:
Apparatus for generating a reduced-scale optical image of an x-ray beam pattern or the like. The apparatus includes an optical fiber assembly (38) which forms a two-dimensional input array (42) and whose output ends form a reduced-scale two-dimensional output array (44). A beam converter (34) in the apparatus converts the irradiation beam (29) to a corresponding electron beam, and this beam is converted to a two-dimensional light image of the beam which is directed onto the input array (42). In one embodiment, the optical fibers form a fiber assembly constructed of an array (38) of multifiber reducers (40) which are tapered on progressing between input (48) and output ends (50). In another embodiment, the input array (78) is formed by the elongate input fiber regions of fibers (77) having a parallel, side-by-side arrangement, and the two-dimensional image is produced by scanning a linear electron beam and light-generating strip (76) transversely along the length of the array. In a third embodiment, the input array (113) is also formed by elongate input fiber regions (115) of a group of side-by-side fibers (114), where the two-dimensional image is generated by rotating the array (113) below a full-area electron beam.