Abstract: Vaccine utilizing killed Brucella abortus strain 45/20 whole cells is useful for immunizing bovines. The vaccine contains trehalose dimycolate or an analog as an adjuvant.

Abstract: A magnetic recording medium consisting of a base coated with magnetic coating material which is a dispersion of magnetic particles using a vinyl chloride-vinyl acetate copolymer and a polyester resin as binder, characterized by the addition of a vinyl chloride-vinyl acetate copolymer containing at least 10% of vinyl alcohol. The use of the last-mentioned copolymer improves the frequency response characteristic as well as the mechanical properties such as the running quality.

Abstract: The compound 4-hydroxyisoxazole and its lower alkyl and acyl derivatives are useful as plant growth regulators, particularly as herbicides.

Abstract: Absorbent for use in passive agglutination test which is aldehyde fixed animal erythrocytes or microorganism cells mixed with aluminum hydroxide and calcium phosphate.

Abstract: In an electrophotographic copying apparatus having an exposure optical system capable of performing variable magnification of copies to be made by changing the relative movement speed of an original and an image scanning optical system to 1/m in accordance with the magnification m of copies to be made from the original and changing the optical position of an optical system for forming an image on a photoconductor in accordance with the magnification m, and projecting a light image of the original to the photoconductor which is moved at a predetermined speed, so that a variably magnified latent electrostatic image is formed on the photoconductor, an electrophotographic copying method including a step of changing a development bias voltage at the development of the latent electrostatic image in accordance with each magnification.

Abstract: In a process for separating trioxane by a continuous distillation which comprises extracting, with benzene, the trioxane-containing distillate obtainable by heating an aqueous solution of formaldehyde, feeding the trioxane-containing benzene solution into a distillation column as a starting material, distilling out the benzene from the column top and withdrawing the trioxane from the column bottom, a process for separating trioxane which comprises retaining the concentration of trioxane X in the liquid composition at the starting material feeding plate of the distillation column (% by weight of trioxane based on the total liquid composition at the feeding plate) in the range satisfying the following relationship: ##EQU1## wherein R is reflux ratio, and .gamma. is a parameter defined by the following equation: ##EQU2## wherein q is the proportion of liquid part in the fed starting material as expressed in terms of ratio by weight and C (%) is the concentration of trioxane in the fed starting material.

Abstract: Provided is a polymer composition for forming polyethylene film comprising an ethylene/C.sub.3 -C.sub.8 .alpha.-olefin copolymer having an intrinsic viscosity of 1.3 to 8.7 dl/g determined in decalin at 135.degree. C. and a density of 0.850 to 0.930 and an ethylene polymer having a melt index of 0.01 to 0.2, a flow parameter of 1.9 to 2.8 and a density not lower than 0.940.

Abstract: A continuous process for producing methacrylic acid ester from methacrylic acid and a lower alcohol containing 1 to 3 carbon atoms utilizing sulfuric acid as a catalyst and a hydrophobic solvent to assist in the formation of a heterogeneous reaction mixture, the process being particularly characterized by the steps of reconcentrating and reusing the sulfuric acid.

Abstract: Disclosure relates to novel escharase containing proteolytic enzyme mixture derived from bromelain useful for the digestion, dissection and separation of non-viable, devitalized tissue, especially eschar tissue from viable tissue in a host organ.

Abstract: A magnetic recording medium consisting of a base coated with a magnetic coating material, characterized in that the binder composition in said magnetic coating material is ternary, consisting of from 30 to 70% of a polyurethane resin having an --OH group in the terminal position, from 10 to 50% of an epoxy resin, and from 10 to 50% of a vinyl chloride-vinylidene chloride copolymer, all by weight on the basis of the total weight of the binder together with a curing agent. The magnetic recording medium exhibits superior electromagnetic properties and physical properties such as stability on repeated runs and bonding strength of the coating.

Abstract: A shutter release apparatus in a camera comprises an insulating holding member which holds electroconductive contacts and which can be deformed elastically by depression of a shutter release button, a first electroconductive contact fixed to the insulating holding member, which comprises a plurality of contact members which are positioned in different planes, and a second electroconductive contact formed in a circuit printed board disposed below the holding member, the second electroconductive contact comprising a plurality of contact members which constitute sequentially a plurality of switches in contact with each of the contact members of the first electroconductive contact in the course of depression of the shutter release button with elastic deformation of the holding member.

Abstract: An original sheet circulation apparatus of a copying machine comprising an original sheet circulation route formed by two guide plates, which is capable of circulating one original sheet in repetition when multiple copies are made from one original, so as to connect an original sheet inlet portion and an original sheet outlet portion of the copying machine. When a desired number of copies are made from each original sheet, each original is held in the original sheet circulation route by a stopper member or stacked on an original sheet stacking portion disposed on the original sheet circulation route by a sheet transportation change-over means. The original sheet circulation apparatus is detachable from the copying machine.

Abstract: A magnetic brush development apparatus of the type comprising a plurality of rotatable, non-magnetic sleeves having stationary, inner magnets and capable of successively scooping up developer to the development section by the sleeves, wherein the magnets in the adjacent sleeves, located in the region where the developer is transferred from one sleeve to the next sleeve, are the same in polarity.

Abstract: A roller bearing having a forcible lubrication function comprises an outer race provided with a radial rib directed inwardly. The bearing has a cage provided with a circular ring portion situated axially outwardly of the rib of the outer race to overlap the rib with a desired clearance to provide forced circulation of lubricant about the bearing.

Abstract: According to this invention, there is provided a process for preparing a non- or low-crystalline soft copolymer, characterized in that 50 to 98 mole % of propylene, 0.2 to 30 mole % of ethylene and 0.2 to 45 mole % of a straight-chained .alpha.-olefin having not less than four carbon atoms are copolymerized using a catalyst, said catalyst comprising (1) a solid substance containing magnesium and titanium and (2) an organometallic compound.