Abstract: An object of the invention is to provide a compound that can be utilized as an antiviral agent, in particular as an anti-RNA viral agent, and especially as an anti-RS viral agent. The invention provides a compound indicated by Formula (1), wherein R1 each independently represent hydrogen, halogen, hydroxyl, amino, carboxyl, C1-C6 alkyl, C1-C6 alkoxyl, C1-C6 halogenoalkyl, C1-C6 alkoxycarbonyl, C1-C6 alkylamino, C2-C5 alkenyl, C3-C6 cycloalkyl, or optionally substituted aryl; R2 each independently represent hydrogen, C1-C6 alkyl, C1-C6 halogenoalkyl, C2-C5 alkenyl, C3-C6 cycloalkyl, optionally substituted aryl or heterocyclic group; and one or more R1 may be present in the same ring, an isomer thereof, a pharmaceutically acceptable salt thereof, or a mixture of these. The compounds provided by the invention are useful as drugs for the prevention or treatment of infectious diseases by virus, especially RS virus, and in particular infectious diseases in the lower airways (e.g., bronchiolitis, pneumonia, etc.).

Abstract: Session management means holds session information concerning sessions for fixed terminals and sessions for mobile terminals including type information indicating a terminal type and status information indicating the status of communication. Session clear-out means disconnects a session the type information for which indicates a mobile terminal and in which communication has not been performed for a time period longer than or equal to a first monitoring time period, on the basis of the session information held in the session management means.

Abstract: The method of making the metal fiber sintered body includes making a coiled material by coiling a thin sheet of Fe--Cr--Al--La, Fe--Cr--Al--Y or Fe--Cr--Al--Ce stainless steel; making a tow of Fe--Cr--Al--La, Fe--Cr--Al--Y or Fe--Cr--Al--Ce continuous fibers by lathe turning an end face of the coiled material at a tool feed speed of from 5 to 40 .mu.m/rev; extending the tow in a width direction and cutting the tow with a roller type cutting assembly to form Fe--Cr--Al--La, Fe--Cr--Al--Y or Fe--Cr--Al--Ce stainless steel fibers having a fiber length of 20 to 200 mm; feeding the Fe--Cr--Al--La, Fe--Cr--Al--Y or Fe--Cr--Al--Ce stainless steel fibers having the fiber length of 20 to 200 mm to a conveyor; dropping the stainless steel fibers onto the conveyor and dispersing the stainless steel fibers by making an air current act on the stainless steel fibers; transporting the resulting sheet-shaped accumulation on the conveyor and compressing it to form a web and sintering the web.

Abstract: An improved process is provided for preparing a porous ceramic product. By this process, a mixture of metal grains, ceramic grains, and short glass fibers is molded by a slurry casting method and dried and then sintered by heating in an oxidizing or nitriding gaseous atmosphere.

Abstract: A method of manufacturing a molding material includes the steps of winding a thin metal strip on the peripheral surface of a rotary shaft a plurality of turns with a resin material being interposed between the resulting layers of metal, cutting an end surface of the metal strip and the resin material which have been wound by a cutting blade while rotating said rotary shaft to obtain a mixture of metal fibers and resin fibers, and heating the fiber mixture to a temperature at which the resin fibers can be softened. In this way, a molding material in which the metal fibers are substantially uniformly dispersed in the resin material in a closely contacted state can be obtained easily. Furthermore, the contents of the metal fibers by volume in the molding material can be arbitrarily adjusted by changing the rate at which the metal strip and the resin material are wound around the rotary shaft.

Abstract: A binocular comprising a binocular body, one or a pair of objective lens-barrel unit or units, a pair of eyepiece lens-barrels and a pair of image-erecting chambers. A pair of parallel optical axes pass through the objective lens-barrel unit or units. The image-erecting chambers are arranged between the objective lens-barrel unit or units and the eyepiece lens-barrels. The image-erecting chambers have incorporated therein their respective prism units for optically connecting the optical axes of the objective lens-barrel unit or units to respective optical axes of the eyepiece lens-barrel units. Each of the image-erecting chambers is associated with the binocular body for angular movement relative thereto about a corresponding one of the optical axes of the objective lens-barrel unit or units in such a manner that the optical axes of the respective eyepiece lens-barrel units are movable angularly toward and away from each other respectively about the optical axes of the objective lens-barrel unit or units.

Abstract: A binocular comprising a binocular body, one or a pair of objective lens-barrel unit or units, a pair of eyepiece lens-barrels and a pair of image-erecting chambers. A pair of parallel optical axes pass through the objective lens-barrel unit or units. The image-erecting chambers are arranged between the objective lens-barrel unit or units and the eyepiece lens-barrels. The image-erecting chambers have incorporated therein their respective prism units for optically connecting the optical axes of the objective lens-barrel unit or units to respective optical axes of the eyepiece lens-barrel units. Each of the image-erecting chambers is associated with the binocular body for angular movement relative thereto about a corresponding one of the optical axes of the objective lens-barrel unit or units in such a manner that the optical axes of the respective eyepiece lens-barrel units are movable angularly toward and away from each other respectively about the optical axes of the objective lens-barrel unit or units.

Abstract: A fiber is manufactured by winding a strip of thin plate material made of a metal or the like around the cylindrical outer surface of a rotatably supported main shaft a large number of times and fixing it thereto, by rotating the main shaft in the direction opposite to that in which the plate material is wound at constant speed, and by feeding a cutter having an edge line thereof expending perpendicular to the axis of the main shaft and a face angle ranging between 21 degrees and 37 degress parallel to the axis of the main shaft and at a constant speed and thereby cutting the end surface of the plate material by the cutter. In consequence, finer and soft long fiber can be manufactured effectively at a low cost.

Abstract: The present invention provides a process for the production of PGD.sub.2, wherein 7-hydroxy prostaglandin F.sub.2 .alpha. is treated with thiocarbonyl diimidazole or its analog and subjecting thus treated product to the reaction to deoxidize the hydroxyl group at the 7-position, the reaction to convert the hydroxyl group to a protecting group, and the reaction to oxidize the hydroxyl group at the 11-position, thus giving PGD.sub.2 at a high efficiency.

Abstract: The invention relates to an electron beam drawing method by a matching mark detecting method for use in manufacturing of semiconductor devices. First, the surface of a semiconductor wafer is divided into a number of blocks. Each block is divided into a number of chips. Four matching marks are formed at four corners of the block. Next, the matching marks are detected by an electron beam. When the electron beam deflecting system is corrected on the basis of the position information of the detected matching marks, different correcting equations are used in correspondence to the number of matching marks detected.

Abstract: A process for the continuous preparation of slides to be chemically analyzed comprises forming regularly a plurality of hollows on an advancing web material; putting a piece of film to be chemically analyzed in each of the hollows; sticking a long covering member having a plurality of apertures corresponding in their positions to the hollows on the web material onto the surface of the web material so that the apertures and the hollows on the web material are in registration; and cutting the circumference outside of each of the hollows. Also disclosed is a slide to be chemically analyzed which comprises a web material having a hollow in the central region thereof in which a film to be chemically analyzed is put, a covering member having an aperture on the surface thereof stuck to the web material; and downwardly extending flanges on a circumferential portion of the slide having heights substantially equal to that of the hollow to stabilize positioning of the slide.

Abstract: A process for producing prostacyclins of the formula ##STR1## wherein the symbol G.sup.1, R.sup.1, R.sup.2, R.sup.31 and R.sup.41 are as defined in claim 1,which comprises reacting 5,6-dehydroprostaglandins F.sub.2 of the formula ##STR2## wherein the symbol G, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as defined in claim 1,with a mercury (II) compound in an inert organic solvent in the presence of tri(C.sub.1 -C.sub.6)alkylamine, treating the reaction product with a boron hydride compound, and if necessary, subjecting the reaction product to deprotecting reaction, hydrolysis reaction, or salt-forming reaction.This process is industrially advantageous process for the preparation of prostacyclin and its derivatives.

Abstract: Apparatus for and a method of processing and packaging a photographic film in which the whole process starting with preparation of a long film blank in a base magazine to the loading in a cartridge is conducted without taking any intermediate rolling step wherein the film is rolled before further processing. The film is sliced and the sliced film is continuously processed by a splicer, a printer, perforating device, sizing cutter, and rolling chute conveyor. The whole process is divided into a suitable number of steps and carried out in apparatus having intermediate partitions to form independent dark rooms or dark sections covered by a light shielding cover, so that exposure of the film can be avoided even if the other sections are illuminated.

Abstract: Proposed models are used for forming into destined shapes liquid, slurry, soft, sheet or lump materials, and are provided with endurance for many times of use and excellent permeability. A basic feature is that aggregates are ferrous or non-ferrous metallic grains and ceramic grains, to which a binder contained in evaporating or consumable substance is added and kneaded, and sintered. The mode has a close hardened layer scattered with metallic oxides on at least a shell. The hardened layer has fine air vents in its thickness. The whole body of a model is 5 to 60% of porosity and more than 100 Kg/cm.sup.2 of compression strength.

Abstract: A shaping aperture used in a charged particle forming system and provided with a slit for shaping the cross section of a charged beam emitted is disclosed in which at least two thin plates each provided with a through-hole for passing the charged particle beam therethrough are piled so as to form a shaping slit of a desired form by the through-holes.