Abstract: A centrifuge rotor includes a central disc formed of a plurality of laminates each having an array of fibers arranged at predetermined annular orientations with respect to the axes of the fibers in the next vertically adjacent laminate. A rim having a higher stiffness than that of the disc surrounds the disc so that a radially inwardly compressive stress is imposed on the disc by the rim when the rotor is rotated at any speed.

Abstract: In a vehicle with a power source for moving said vehicle and for spreading liquid material on a road surface a material distributing apparatus is provided which includes a hydrostatic transmission and associated control mechanism for automatically maintaining a constant application rate of the material to the road surface in response to changes in the width of the application pattern. The hydrostatic transmission is responsive to the power source for providing a controlled rate of flow of the liquid material from the tank of the distributing apparatus, to a discharge element of the apparatus and onto the road surface so as to maintain a constant rate of application for the material despite changes in the speed of the vehicle. A pattern adjustment mechanism is provided for adjusting the pattern provided by the discharge element.

Abstract: A quick-change adapter for rotary devices such as power drills comprises a shaft that can be inserted in a chuck of the powered rotary tool. The shaft is coupled to and is coaxial with a tool holder that inlcudes means for retaining a tool and means for driving the tool. The retaining means typically involve one or more spring-loaded balls that engage a groove or detent in the tool. The driving means include a shape that is not circular, to engage a corresponding shape on the tool to apply torque, and a surface having a component that is substantially perpendicular to the axis of the adapter to enable the application of force in an axial direction. Tools such as drills, screw drivers, and the like are rendered usable with the adapter by receiving a shaft to fit the adapter and couple torque from the adapter, a groove or detent to fit the retaining means, and a shoulder or the like to apply axial thrust.

Abstract: N-(heterocyclicaminocarbonyl)arylsulfonamides in which the aryl radical is substituted in the 2-position by a carboxy radical, ester, thioester, or amide thereof; e.g. N-[(4,6-dimethylpyrimidin-2-yl)-aminocarbonyl]-2-methoxycarbonylbenzenesul fonamide or N-[(4,6-dimethoxy-1,3,5-triazin-2-yl)aminocarbonyl]-2-methoxycarbonylbenze nesulfonamide; are useful for the regulation of plant growth and as pre-emergence and post-emergence herbicides.

Abstract: A single-antibody inhibition assay for detecting antibody to HBcAg using a labeled monoclonal antibody. A competitive ELISA method of screening hybridoma supernatants for monoclonal antibodies to HBcAg. A method of producing high affinity monoclonal antibody to rHBcAg by immunizing a mouse with rHRcAg using a short immunization schedule. Monoclonal antibodies to immunodominant epitope of HBcAg.

Abstract: A fault indicator light control circuit for a regulator controlled alternator/battery charging system has a first transistor connected with a light bulb in its conductive path to be turned "ON" when the transistor is conducting. Conduction of the transistor is controlled by a plurality of conductive paths connected to the base of the transistor and each path includes a Zener diode having a breakdown voltage substantially above the rated voltage of the battery. The conductive paths are connected to detect any one of a plurality of circuit operating defects, including a short in the silicon controlled rectifier (SCR) of a solid state regulator, an open SCR and a regulator failure. A capacitor is connected in the circuit to be charged by an alternator voltage having a polarity opposite that which is used to charge the battery. The capacitor voltage is used as a reference to bias the first transistor "OFF" when the system is operating normally.

Abstract: Compounds of the formula ##STR1## are disclosed. These compounds are useful as hypotensive agents due to their angiotensin converting enzyme inhibition activity and depending upon the definition of X may also be useful as analgesics due to their enkephalinase inhibition activity.

Abstract: A barrier resin composition is disclosed which contains 50 to 95 weight percent ethylene/vinyl alcohol copolymer having a melt flow of 0.1 to 100 g/10 minutes as measured at 210.degree. C. and 50 to 5 weight percent mica having a particle size of less than 74 microns and an aspect ratio of from 10 to 150. The composition can be prepared by melt blending a mixture of the ethylene/vinyl alcohol copolymer and the mica. Alternatively, the composition can be prepared by forming a dispersion of this mica in a solution of the ethylene/vinyl alcohol copolymer followed by precipitating the ethylene/vinyl alcohol copolymer.

Abstract: Formable twistless woven precursor fabrics, especially in satin or basket weave, made from flat tape of fiber reinforced thermoplastics on a power driven loom. The weft tape is supplied from a rotatable package that is driven in synchronism with the feeding mechanism and a finite tension on the tape is maintained.

Abstract: In order to prevent an uncontrolled collapse of a quartz tube whose inner surface is being coated with a vitrifiable substance in making a preform or parison of an optical fiber, one or more streams of carrier gas entraining the ingredients of the coating substance through the quartz tube are supplemented by a stream of supplemental carrier gas whose flow is being continuously controlled to keep the overall mass-flow rate substantially constant. The outer tube diameter is photoelectrically monitored and incipient changes thereof are compensated by controlling a flow of additional carrier or inert gas which does not pass through the tube but joins the traversing gas flow at the tube outlet, inside a solids separator with a restricted exit aperture, to modify the pressure differential across the tube wall.

Abstract: Ordered copolymers of tere- and isophthalyl halides with diphenyl ether where the phthalyl groups alternate or where the terephthalyl or isophthalyl groups are in blocks are disclosed. These novel ordered copolyetherketones exhibit a higher level of crystallization and more rapid crystallinity behavior than corresponding random copolyetherketones. They also form completely miscible blends with certain aromatic polyetherimides.

Abstract: Preparing a flexible, polyurethane foam:(a) placing a polyol polyurethane foam-forming reaction mixture in a reaction zone and allowing the mixture to rise, thereby forming a partially cured cellular material,(b) applying a compressive force to the partially cured cellular material after the elapsing of a period of time after completion of the rise to thereby reduce the volume of the partially cured cellular material, and(c) removing the compressive force and completing the cure of the compressed cellular material.The cellular material has enhanced cushioning properties including a unique and superior feeling of comfort resulting from a soft touch yet with a deep firm support with an appropriate springiness to the foam. The polyol in the polyurethane foam-forming reaction mixture contains a mixture of(d) from 90-10 parts by weight of a polymer-polyol composition containing about 10-40% polymer solids, and(e) from 10-90 parts by weight of a base polyol having a molecular weight of at least 4500 up to 7000.

Abstract: An exposure control system which permits accurate reproduction of optical density levels on a final image is characterized by a dynamically corrected look-up table. The look-up table is used to calculate each desired exposure intensity level for each image pixel on the basis of data obtained during the exposure and development of an immediately preceding image.

Abstract: A coating composition useful for a finish for automobiles and trucks in which the film forming binder contains two reactive binder components of about(a) 50-95% by weight, based on the weight of the binder, of an acrylic polymer having at least two reactive anhydride groups composed of polymerized monomers of an ethylenically unsaturated anhydride and polymerized monomers from the group consisting of alkyl methacrylate, alkyl acrylate and any mixtures thereof, wherein the alkyl groups have 1-8 carbon atoms and the polymer has a weight average molecular weight of about 2,000-50,000;(b) 5-50% by weight, based on the weight of the binder, of a glycidyl component having at least two reactive glycidyl groups; andthe composition contains about 0.1-5% by weight, based on the weight of the binder, of a catalyst; and wherein the composition upon curing forms a hard, glossy and tack free finish.

Abstract: An apparatus for handling and moving a plurality of objects such as containers each holding a sample to be analyzed by an analytical instrument contains the following:a. a robotic arm assembly capable of vertical, horizontal and rotational movement;b. gripper mechanism for holding objects attach to the arm of the assembly;c. stepper motors for driving the robotic arm assembly;d. a power source that drives the stepper motors electrically coupled to the motors;e. a sensing system with a feedback loop that monitors the movement of arm assembly, the objects being manipulated by the arm assembly and the force applied to the objects by the gripper mechanism;f. a computer electrically interfaced with the linear stepper motors, the power means and the sensing system with the feedback loop andg. a means for providing operating data input to the computer;operating data is provided to the computer for operation of the autosampler and the autosampler moves the object as directed.

Abstract: A process is provided for preparing a 7-oxabicycloheptane amino alcohol intermediate of the general structure ##STR1## (wherein the above structure represents (D) of (L) isomers) which is useful in preparing thromboxane A.sub.2 receptor antagonists. This intermediate is prepared by reacting mesoanhydride with an aryl amine ##STR2## wherein R is alkyl, CH.sub.2 OH, CO.sub.2 H or CO.sub.2 alkyl, to form the acid ##STR3## which is reduced by treatment with lithium aluminum hydride or diisobutylaluminum hydride or Red-Al to form the alcohol ##STR4## wherein R.sup.1 is CH.sub.2 OH when R is CO.sub.2 H, CO.sub.2 alkyl or CH.sub.2 OH, and R.sup.1 is alkyl; where in the above alcohol R.sup.1 is CH.sub.2 OH, such alcohol compound is treated with an alkyl chloroformate in the presence of base such as an alkali metal alkoxide to form the alcohol ##STR5## which undergoes cleavage by treatment with alkali metal, ammonia and acid to form the amino alcohol intermediate.Where in the above alcohol R.sup.

Abstract: Apparatus for movably supporting an object to be marked comprising a table assembly supported for linear reciprocating movement on a fixed platform. A generally U-shaped support member mounts a marking device for linear movement relative to the support member adjacent the table assembly. A first drive moves the marking device and a second drive moves the table assembly. The U-shaped support member can be arranged in two different positions relative to the table assembly so as to mark either a vertical surface or a horizontal surface of an object.

Abstract: The present invention is an improved coupling for as ostomy bag system. In the improved coupling, an integral O-ring is included to improve the retention of the coupling as well as its seal by extending through the annular ring.

Abstract: Solvent-based thermosetting coating composition comprising a hydroxy functional epoxy-polyester graft copolymer and polyfunctional, hydroxy-reactive crosslinking agent. The coating composition may be formulated as hot sprayable, high solids coating composition suitable for use as chip resistant automotive vehicle primer suitable for use on body panel areas subject to chipping by stones, gravel and other road debris. The composition also may be formulated as a high solids composition sprayable with conventional spraying equipment. The hydroxy functional epoxy-polyester graft copolymer is the product of polymerization of lactone monomers in presence of hydroxy functional epoxy ester resin precursor. The precursor resin is the product of modified diepoxide and hydroxy functional secondary amine, the modified diepoxide being the product of the polymerization of lactone monomers in the presence of diepoxide which has been chain extended with dicarboxylic acid.

Abstract: A storage stable and rapid dissolving packaged powder developer of uniform composition is produced by preparing developer or developer precursor solutions and removing solvent to provide powder for packaging in plastic impervious to the atmosphere. Preferably, the solvent is removed by freeze-drying or spray-drying.