Abstract: Substituted piperazines and derivatives of Formula I ##STR1## are described, as well as methods for the preparation and pharmaceutical composition of the same, which are useful as central nervous system agents and are particularly useful as dopaminergic, antipsychotic, and antihypertensive agents as well as for treating hyperprolactinaemia-related conditions and central nervous system disorders.

Abstract: Diluent and wash compositions are useful in a rapid and sensitive assay for detecting antibodies, and especially retroviral antibodies, in a biological specimen. The diluent composition is buffered to a pH of 6 to 10 and includes a protein or carbohydrate, a surfactant and a negatively-charged organic compound. The wash composition is buffered to a pH of 5 to 10 and includes a surfactant. These compositions can be included in a diagnostic kit. The method of this invention includes mixing the biological specimen with the diluent composition, forming an immunological complex between ligand and antibodies in the specimen and separating complexed materials from uncomplexed materials using a filtration membrane and a washing step. An enzyme labeled anti-antibody is added to form a ligand-antibody-antibody complex followed by its detection using suitable reagents.

Abstract: A light emitting diode has both end faces metallized and is mounted on a substrate with the light emitting junction perpendicular to the substrate. The electrically conductive ends are electrically bonded to conductive areas on the substrate by solder or conductive adhesive LED dice can be placed on the substrate by temporarily attaching the dice to a tape which has been wrapped around a knife edge. The dice tilt as the tape wraps around the edge and are picked off one at a time by a vacuum collet while temporarily supported by a movable finger, and then transferred by the vacuum collet to a substrate. A similar method may be used for placing semiconductor dice on a substrate without the tilting of dice around the edge. In another embodiment, an array of LEDs can be assembled in windows through a metallized plastic tape which is bonded to a foundation with additional metallized leads.

Abstract: The present invention discloses a main rotor collective pitch control assly for rotary wing aircraft. The assembly uses segmented rotor blades. The collective pitch of each movable segment may be independently varied, or may be adjusted in unison with one or more other segments on the same or different rotor blades. Control inputs may be made manually by the pilot or may be made by a computer which interprets data pertaining to the vibrational level and velocity of each rotor span. The pilot may override the computer in the event of system failure or if otherwise desired.

Abstract: Equipment for cleaning the wheels of a vehicle comprises means over which the vehicle can be driven to cause the wheels to be raised from the ground on a ramp, lowered into a water bath, raised from the water bath and lowered to the ground again as the vehicle is driven thereover. In an alternative embodiment a frame supporting nozzles is provided under which frame a vehicle is able to be driven. Clensing liquid passes through the nozzles and washes the top and sides of the vehicle.

Abstract: A method of recovering precious metals from a silver bearing ore containing polybasite, pearcite, pyrargyrite, tetrahedrite or argentite by mixing the ore with an alkali metal or alkaline earth metal peroxide in slurry or solid, leaching the ore with a cyanide solution, and recovering the precious metals from the cyanide solution.

Abstract: A process for removing acetone from an acetone/methyl acetate/methyl iodide mixture utilizing extractive distillation with water being introduced to the distillation zone above the point of introduction of the mixture and acetic acid being introduced at or above the point of introduction of the mixture. In a preferred embodiment the mixture is subjected to an initial extraction with an aqueous extractant to remove most of the methyl iodide.The process is particularly applicable to removing acetone by-product in carbonylation processes for the production of acetic anhydride.

Abstract: Measurements of the permittivity of samples over a very wide frequency range and a wide temperature range have previously involved such problems as changing parts of the measuring equipment in different regions of the frequency range, substituting one of the components of a bridge used as part of the equipment to obtain bridge balance, and limited permittivity resolution. The present invention employs a capacitance bridge formed by a sample held between electrodes, a series capacitor and a detector comprising a high input impedance amplifier and correlators. The bridge is balanced by applying voltages of known relative amplitude and phase constructed from outputs having relative phases of 0.degree., 90.degree. and 180.degree. of two phase-locked oscillators. The voltages are constructed using phase shifters, attenuators and summer-driver circuits. At low frequencies the applied voltages are obtained from a waveform synthesizer.

Abstract: Novel phenol compounds of the formula: ##STR1## wherein R.sub.1 is an alkyl substituent of from 8 to 18 carbon atoms, R is an ethyl or propyl substituent, and n is from about 50 to 200.These compounds as well as certain other similarly alkoxylated compounds, for example, a compound of the formula: ##STR2## wherein R.sub.2 and R.sub.3 are each, independently, an alkyl substituent of 8 to 15 carbon atoms, R is an ethyl or propyl substituent, and n is from about 50 to 200, may be used in sodium stearate based stick gels to enhance transparency, minimize syneresis and/or increase the setting point of the gel.

Abstract: A stab joint coupling, for joining corrugated pipes, has a male connector and a female connector both having means for attachment to a first and second piece of pipe by engaging the corrugation of the pipe. A circumferential elastomeric sealing means is positioned between the joined coupling connectors to effect a substantial liquid seal for the joint. The coupling permits two pieces of corrugated pipe to be joined relatively inexpensively and quickly by workers in the field.

Abstract: A one-piece dental retention pin is symmetrical with respect to a central plane and has an upper end and a lower end and parallel first and second face surfaces. The pin has a top portion extending from the upper end toward the lower end and a bottom portion extending from the lower end to a location of juncture with the top portion and tapering from a location of minimum width at the lower end to a location of maximum width about halfway between the lower end and the juncture of the bottom portion and the top portion and then tapers to diminish in width to its location of juncture with the top portion. A central hole therethrough joins the face surfaces which have serrations in the bottom portion.

Abstract: Classification of natural language data wherein the natural language data has an open-ended range of possible values or the data values do not have a relative order. A training database stores training records, wherein each training record includes predictor data fields. Each predictor data field containes a feature, wherein each feature is a natural language term, and a target data field containing a target value representing a classification of the record. Features may also include conjunctions of natural language terms and each feature may also be a member of a category subset of features. The training database stores, for each feature, a probability weight value representing the probability that a record will have the target value contained in the target data field if a feature contained in a corresponding predictor data field occurs in the record.

Abstract: The present invention provides methods useful in autologous bone marrow transplantation and cancer therapy. According to one aspect of the invention, bone marrow cells from a patient having cancer are treated with selected antisense oligonucleotides in order to deplete the bone marrow of malignant cells prior to infusion back into the bone marrow donor. In a separate embodiment, selected antisense oligonucleotides are administered systemically for anticancer therapy.

Abstract: The present invention relates to a protective device for the chest for use in athletic activities such as baseball, softball and hockey. The present invention provides a protective body or plate for the center of the chest and includes a first lobe which extends vertically along the mid portion of the sternum, second and third lobes which respectively extends along the right and left lower portion of the rib cage adjacent to the sternum, and a fourth lobe which extends downward over the solar plexus of the user. The protective plate is also provided with a domed profile which assists in maintaining the proper positioning of the plate and in absorbing and dissipating impact energy.

Abstract: The invention provides a socket for substrates such as single in-line memory modules, circuit boards, and similar components which are inserted into and rotated into fixed position on the socket. The socket housing includes end portions having improved structural integrity for externally mounting cooperative latch elements. The external mounting permits a greater variety of latch sizes and configurations to suit operational requirements. An exemplary latch is preferably metal and comprises a mounting collar having a compliant C-section which corresponds to a latch-receiving section or member on the socket housing, a detent for clasping a memory module, and a resilient section connected therebetween for biasing the detent so that it clasps the memory module in fixed position in the socket. The latch collar is mounted onto the cooperative section of the socket end portion, and the latch is thereby disposed exteriorly on the socket body.

Abstract: A gas turbine engine control system which receives an engine condition and generates a parameter signal representative of the condition. The control system also receives a temperature signal representative of the engine temperature downstream of the engine combustor. A comparator is used to compare the parameter signal with the temperature signal and a nonrecoverable stall output signal is produced when the temperature signal indicates the temperature is greater than a scheduled value for the given parameter signal. The invention also includes a method for monitoring a gas turbine engine comprising the steps of receiving an engine condition and for generating a parameter signal representative of the condition.