Abstract: A solid or semisolid propellant comprising grains of propellant or propellant components bonded together so as to create voids within the propellant volume, said grains bonded together with sufficient strength to substantially delay the fluidization of the propellant by the onset of Taylor unstable burning, said propellant having a rapid burn rate below that associated with Taylor unstable burn. In another embodiment, the grains are held within and the voids are filled with viscous fluid binder such as a petroleum oil, said binder functioning to hinder Taylor unsatable burning and yet permit very rapid burning within the propellant volume.

Abstract: The present invention relates to a method for comminuting a coarse lump mineral material in an autogenous grinding system, in which feed to the grinder is divided into a coarse fraction and a fine fraction. The coarse fraction is coarser than the inflection point on the coarse side of the knee of the particle size distribution curve of the charge of said autogenous grinder; the fine fraction is substantially all finer than the point of intersection between two tangents drawn between the adjacent inflection points on either side of the knee of the particle size distribution curve of the charge. The ratio between the amounts of fractions is determined on the basis of achieving a given charge quantity for a particular, selected set point power value for the mill in question, and determined with respect to a selected degree of grinding. Grinding efficiency is greatly increased by selecting feed sizes in accordance with the present invention.

Abstract: Some chemical products are so toxic that they must not come into contact with parts of the human body.

Abstract: The invention relates to live deletion mutants of a herpesvirus, especially of Pseudorabies virus. The genomes of the mutants differ from the genomes of the parent strain by the presence of one or more deletions selected from a deletion in the inverted repeats, a deletion in the unique sequence, and a deletion in the thymidine kinase gene.The new deletion mutants are avirulent, do not induce latent infections, are stable and possess good immunogenic properties.The invention also relates to vaccines containing the new mutant strains.

Abstract: An automatic perimeter automatically presenting stimuli in a plurality of conditions, in which the presentation of stimuli can be readily stopped by an operator during the presentation, and an accurate examination of eyesight is carried out in accordance with eliminating the few latest perception signals before the stimulus presentation is stopped during an examination of eyesight.

Abstract: A pen comprises an elongated one-piece barrel having substantially rigid tip end and head end portions joined to each other by an intermediate integral flexible portion, whereby the barrel can be bent at the flexible portion, and a writing tip at the distal end of the tip end portion. A substantially rigid tubular cap member is telescopically received over the tip end portion of the barrel such that it can be moved along the barrel between (1) a retracted position in which it overlies part of the tip end portion and substantially all of the flexible portion, thus exposing the writing tip for use and rendering the pen substantially rigid, and (2) an extended position in which it covers the writing tip and leaves the flexible portion exposed, thus protecting the writing tip and rendering the pen flexible. At least one boss on the inner surface of the cap is received in a slot extending coextensively with the distance between the extended and retracted positions.

Abstract: A one-way reducing and enlarging printer to print a reduced or enlarged image in one direction onto a photosensitive material comprising a photosensitive material holder to mount the photosensitive material, a negative holder having a light transmissive property to mount a negative at a position opposite to the photosensitive material, a light source, a douser having a slit opening and placed between the light source and the negative, and control device to control relative motion among the photosensitive material holder, the negative holder, and the douser by the signals from a signal generating device.

Abstract: A method of recording register marks by a color scanner for the respective color separation pictures, wherein the register marks are produced by positive and negative linear pictures, or alternatively, by positive linear picture having omitted portions, thereby performing the registering work in an exact and efficient manner.

Abstract: A novel method of scanning and recording image and an apparatus for use thereof in which: plural original pictures are attached to an original picture cylinder; the trim-region of each original picture is designated on the original picture cylinder prior to recording a duplicate image; the image signals obtained by photoelectric scanning of the original picture from within its trim-region are sampled; the data thus sampled are subjected to statistical classification and treatment for obtaining the density data of each original picture; based on this density data, the scanning condition data necessary for the optimum gradation correction and optimum color correction are determined; these scanning condition data are stored at every original picture; and at the same time, the scanning condition data which were stored at every scanning of the original picture are successively set in the image scanning and recording apparatus, in photoelectric scanning for recording the duplicate image; thus sequential scanning an

Abstract: A heat treatment method in which a heating furnace is preliminarily heated before carrying an object to be heat-treated in the furnace and an unit heating process is repeated at least twice according to an output program for controlling an output of a heating light source which is stored in a memory so that the heat treatment is uniformly applied to every object to be heat treated.

Abstract: This invention relates to a method of controlling soil-borne pathogens in plants by:(a) growing a viable culture of one or more microorganisms antagonistic with respect to the soil-borne pathogens to be controlled said microorganism being selected from the group consisting of Trichoderma or Scytalidium;(b) drying the entire culture;(c) grinding the viable dried culture to form an admixture containing propagules, metabolites and partially digested growth medium; and(d) treating the plants with the admixture which enables the microorganisms to grow internally within the plant.

Abstract: An apparatus and method for manufacture of carpet is disclosed where yarn bits are forced onto an adhesive covered backing. Yarn is moved through an outlet and severed after application to the backing. Also disclosed is a yarn feed device and a multicolor carpet printer.