Abstract: Although poly ICLC possess a broad spectrum of antimicrobial and anticancer activities, it therapeutic potential has yet to be fulfilled due to its toxic side effect. This problem can be overcome by encapsulating poly ICLC within liposomes which provides a drug delivery system with slow sustained release characteristic and which has the ability to target the drug to sites of infection and tumor without causing systemic burden to normal tissues, thereby enhancing the immunological and biological activities of poly ICLC.

Abstract: A bacteriophage linked to an enzyme can replace an antibody in a system for detecting the presence of a bacteria in a sample. Specifically Brucella abortus (a pathogen which causes brucellosis in cattle) can be detected using Brucella bacteriophage for the virus, urease for the enzyme linked to the bacteriophage, m-maleimidobenzoyl-N-hydrosysuccimide ester as a coupling reagent, sera from mice immunized with Brucella bacteriophage for a detector antibody, urease conjugated to anti-mouse sheep antibody for an indicator, and urea with bromcresol purple as the substrate. The materials can be used in indirect (sandwich) or direct enzyme-linked viral assays (ELVirA).

Abstract: A portable, forced air apparatus for warming a hypothermia victim in the field includes a stretcher, strips of material extending across the stretcher for supporting the torso of the victim above the stretcher bottom, a canopy for covering the victim's torso, a blower operated heater in a compartment in the stretcher beneath the victim's legs for delivering hot air to the canopy in the area of the torso for warming the victim's body while the legs and arms are covered to prevent heat loss, a heated head and neck support for controlled warming of the victim's head and neck, and sleeves for covering the victim's arms and legs to prevent heat loss therefrom during torso warming. The heating system is complemented by warm IV infusion and warm oxygen delivery to the victim.

Abstract: The present invention relates to multi-function, multi-channel digital receiver architecture for performing three distinct receiver functions including simultaneous intrapulse analysis, direction finding and LPI signal detection; for determining parameters of incoming signals, comprising a plurality of receiver channels, each channel including a respective antenna for receiving the signal; a down-converter for converting the signal to an intermediate frequency (IF) signal; and an analog-to-digital converter operatively coupled to receive the IF signal and to provide a digital signal at a sampling rate, the digital signal being indicative of the amplitude and phase of the received signal in the channel, and a digital processor operatively coupled to receiving the digital signals from each of the plurality of channels for determining the amplitude and phase intrapulse profiles; by combining the amplitude and phase intrapulse profiles from all of the plurality of channels to provide both intrapulse and conventio

Abstract: A beamsplitter for a double beam interferometer with the interferometer and beamsplitter being designed to provide suppression of the interferometer's self emissions by optical substraction. The beamsplitter is formed of two flat transparent substrates having balanced transmission characteristics at the wavelengths of interest. These substrates are superposed and mounted next to each other with a thin layer of air squeezed between adjacent flat surfaces of the substrates. A temperature sensor on a mount in which the beamsplitter is installed allows for simplified radiometric calibration of the interferometer.

Abstract: Apparatus and process for marking a surface with a highly visible and substantive mark comprising mixing a dry granular, free-flowing superabsorbent polymer powder with liquid, preferably water, and dye to form a semi-solid gel and depositing the gel onto the surface to be marked. The marking apparatus comprises a chamber for mixing the gel and a ram used to eject the gel from the chamber without excess mechanical agitation and without causing significant breakdown of the gel. The dye makes the gel very visible, the bulk of the gel makes it more easily visible, the nature of the gel makes it temporary; easily dispersed with time, sunlight or water.

Abstract: An automatic gain control (AGC) circuit for electromagnetic wave receiving systems, such as radar warning receivers, has a number of N parallel paths to which analog IF input signals are applied with each path being connected to one of N inputs of an output switch. Each path contains a free running sampling analog-to-digital converter (ADC) that digitizes an amplified analog IF input, the digitized signals being applied to inputs of digital delay units whose output are supplied to the output switch's inputs. The amplification in each of the N paths is fixed and staggered to provide different fixed amplifications of the IF input to the ADCs. The AGC has a leading edge trigger (LET), a trailing edge trigger (TET) and a track-and-hold circuit that samples and holds the amplitude of an input pulse starting at the leading edge as demarked by the LET.

Abstract: A multisensor vehicle-mounted mine detector having one or more sensors leading the vehicle for detecting objects in the ground while moving. A navigational system tracks the coordinates of the detected objects, performs data fusion, declares whether the object is a target worthy of interest and if so, stops the vehicle with a trailing thermal neutron activator sensor (TNA) over the coordinates of the object and interrogating the object with slow neutrons to confirm whether it contains sufficient nitrogen to indeed be a mine. The TNA confirmation is kept brief due to the use of a strong source coupled with means for analysing the resultant pulses and rejecting piled-up pulses. The difference between an integration of the entire pulse and a portion of the pulse is compared against a predetermined difference for a normal pulse wherein variations therebetween are indicative of a piled-up pulse which is then rejected.

Abstract: A compact portable instrument for determining the percentage concentration of a material in a solution such as the amount of concentrate in an output from an Aqueous Film Forming Foam generator used to extinguish fires. The instrument comprises a refractive index sensor with a reflective type refractometer prism having a measuring surface in contact with liquids placed in a sample holder formed by an opening through a retainer plate. The measuring surface of the prism covers that opening and presses the retainer plate towards an outer surface of the instrument, that outer surface having entrance and exit ports for sample liquids at that opening. The refractometer senses the refractive index of liquid in the sample holder and, when properly calibrated, provides an output to a digital display that directly indicates the percentage concentration of material in the liquid.

Abstract: A system for exerting a force, for instance a vertical upward lifting force of a predetermined tension vs. time waveform on a suspended object is useful in training the operators of shoulder-supported rocket launchers. The system includes an actuator for generating a required tensile force, a non-stretchable line or cable for connecting the object to the actuator and an overhead guide supported on an overhead support structure. The cable passes over the guide means defining a portion of the cable directly supporting the object. The position of the guide is controlled, in a response to a deviation from verticality of the portion of the cable with suspended object, before the activation of the actuator so that the verticality of the object lifting force is maintained. In operation, a predetermined force is exerted on the object regardless of whether the object moves as a result of the force.

Abstract: An underwater acoustic projector comprising a pair of spaced apart end plates with an acoustic driver positioned between the end plates, the driver having smaller cross-sectional dimensions than the end plates. The end plate's edges are secured to an outer one-piece thin walled shell that provides a waterproof enclosure for the driver. That thin walled shell has a concavely inwardly bent surface between the end plates and a plurality of axially extending corrugations to provide a predetermined axial compliance and radial-to-axial transformation ratio.

Abstract: A process for making a superconducting, Pb-doped, 2:2:2:3 BiSrCaCuO thin film includes heating deposited thin film material at between 1083K and 1103K for no more than 20 minutes in oxygen with a flow rate of 500 sccm, followed by quenching the material in air to room temperature, heating the material in air between 1103K and 1143K for no more than 40 minutes and finally quenching the material in air to room temperature.

Abstract: An optical identification friend-or-foe (IFF) system for vehicles comprises a Selective Wavelength IFF (SWIFF) system with a tunable optical beacon being located on each similarly equipped vehicle. That tunable optical beacon includes a light source and wavelength encoder which can select a number of narrow-band optical wavelengths for emission from the beacon, those selected wavelengths forming an identification code for a vehicle. The optical beacon directs the selected wavelengths along an optical path to a diffuser which can irradiate a wide field-of-view around the vehicle with those selected wavelength for detection and identification by other friendly vehicles. The light source may be one that emits a broad range of wavelengths with the encoder providing a number of narrow-band optical filters which can be selectively positioned in the optical path from the light source to the diffuser.

Abstract: A radial flow fuel processor comprises a heat transfer assembly and a reactor housing encasing the heat transfer assembly. The heat transfer assembly includes a plate having a plurality of heat transfer structures extending therefrom and at least one fluid passageway extending within the heat transfer plate for containing a heat transfer fluid stream. The reactor housing comprises a an inlet and an outlet. A reactant stream introduced at the inlet flows radially outwardly through the processing chamber to the volume between the housing and the heat transfer assembly, and is then exhausted through the outlet. In reverse mode, a reactant stream introduced at the outlet flows radially inwardly through volume between the housing and the heat transfer assembly to the processing chamber, and is then exhausted through the inlet.

Abstract: A decoy flare for infrared (IR) seeking missiles comprises a tubular outer shell with a first rupturing disc sealing a rear end of the outer shell and a cover member with a second rupturing disc sealing a front end of the outer shell. These form a sealed container for a pyrophoric liquid. A nozzle cap is attached to the cover member with a nozzle being located in front of the second rupturing disc. A piston in the container adjacent the first rupturing disc separates the pyrophoric liquid from the disc. A holder for a gas generator, a disc of energetic material, is connected in sealed relationship to the container to position the gas generator adjacent the first rupturing disc and form a gas generating chamber between the holder and that disc. That holder contains an ignition mechanism for the gas generator and a seal to prevent gases from escaping via the ignition mechanism after it is activated.

Abstract: A write protect device for a computer comprising a hardware circuit with a switch connected to an internally installed circuit card which has cable connections between data storage device drives and a drive controller cable, the circuit card intercepting control lines used for drive selection and control. The switch is connected to inputs of a latch circuit which, in one position of the switch, generates *READONLY and READONLY signals at outputs of the latch circuit and, in a second position, *DISABLE and DISABLE signals at other outputs. To enter a read only mode, the circuit card includes an inverter and a NAND gate in a *WRITE GATE line to the data storage device drives with one input of the NAND gate being connected to the *READONLY line from the latch circuit which will prevent any *WRITE GATE signal from reaching the data storage device drives when the *READONLY line is activated.

Abstract: A digital quadrature demodulator for an intermediate frequency (IF) input signal with an analog-to-digital (A/D) converter having a sampling frequency f.sub.s and an input to which the IF input signal is applied where the IF input signal has a bandwith B<f.sub.s /4 centered about a frequency of f.sub.s /4. The demodulator includes an arrangement to direct even numbered output signals from the A/D converter to an inphase channel and odd numbered output signals from the A/D converter to a quadrature channel where each channel contains a highpass filter and the demodulator includes circuits to decimate by 4 signals of the channels to generate, together with the filters, a quadrature output signal Q(nT) at an output of the quadrature channel and an inphase output signal I(nT) at an output of the inphase channel. The quadrature highpass filter in the quadrature channel has an optimized transform architecture in which the filter coefficients h.sub.

Abstract: A direction finding apparatus for detecting and locating transmitters of direct sequence spread spectrum signals has two antenna spaced apart horizontally which are connected to a tuner that is under the control of a microcomputer. The tuner bandpass filters signals in separate channels for each antenna, amplifies and converts those signals to an intermediate frequency. That intermediate frequency signal in each channel is applied to a nonlinear device to produce discrete spectral components which are applied to a bandpass filter in order to isolate a discrete spectral component in one channel and a similar component in the other channel. Each selected discrete spectral component is then digitized in A/D converters and applied to the microcomputer which determines the frequency of the spectral component and the phase difference between channels.

Abstract: A novel optical chemical sensor for direct and continuous detection of organic species in process streams is described. The sensor is based on the use of surface plasmon resonance to amplify fluorescence emission from chemically selective membranes which can be deposited as Lang-muir-Blodgett films on thin metal island films.

Abstract: An apparatus for detecting a beam of radiation, such as a collimated laser beam, and determining the angle-of-arrival of that beam with a high angular resolution, the apparatus comprising a linear array of radiation detectors arranged in a plane and a digital Gray code shadow mask, located at a predetermined height above and parallel to the plane. The Gray code shadow mask is provided with parallel rows containing slot(s) with each of those rows being centrally positioned directly above one of the radiation detectors and arranged so that the rows are perpendicular to the linear array. The slot(s) in each row are located at predetermined distances from the center of a row with those distances differing for each row. A well collimated radiation beam, such as from a laser, directed towards the shadow mask will project images of the slots onto the plane with the positions of the images being dependent on both the positions of the slots and the angle-of-arrival of the beam.