摘要:
##STR1## (wherein R 1 and R 2 independently stand for at least one member selected from the class consisting of alkylene groups, substituted alkylene groups, cycloalkylene groups, substituted cycloalkylene groups, arylene groups, and substituted arylene groups), is a novel diacetylene-nylon salt compound possessing two kinds of ability of solid-state polymerization, and two-dimensional macromolecular crystals are obtained by severally polymerizing the diacetylene moiety and the nylon salt moiety of the compound. A shaped article of high rigidity is produced by filling a mold with the aforementioned salt and subjecting the salt in the mold to simultaneous application of heat and pressure.
摘要:
Cyclic octapeptide represented by the general formula: ##STR1## (wherein A denotes an iminoalkylene group of 3 or 4 carbon atoms or an alkylene group of 1 or 2 carbon atoms) are novel substances. They are produced by cyclo-dimerizing specific tetrapeptide esters. They are possessed of excellent properties as an agent for the extraction of ions, particularly alkaline earth metal ions.
摘要:
A pushbutton tuner formed of a base unit (A) including a memory slide and operating members for displacing the memory slide upon operation of a push button; a coil unit (B) including a movable member provided with cores displaceable relative to coils; a clutch unit (C) including a clutch mechanism and provided with a rotating shaft for manual tuning operation; and an arm unit (D) including a plurality of button slides fitted with push buttons, respectively, and slidably disposed on a top plate. These units are assembled separately from each other and, then, mounted on a baseplate of the base unit (A).
摘要:
A disposable portable mask for emergency use in a contaminated atmosphere is disclosed, which mask comprises a sponge of adequate size to cover a user's mouth and nostrils. The sponge is impregnated with water or an aqueous solution of an acidic salt, or weak alkali salt, for adsorption of toxic acidic gases passed therethrough. Perfume may be included in the sponge to mask any disagreeable odors of the sponge or liquid materials employed. The liquid-containing sponge is compressed and sealed within a fluid-tight container of plastic, or the like, to prevent evaporation of the liquid from the sponge. The overall package is of small size for ease in carrying in a person's pocket, handbag, or the like, so as to have a mask available for ready use at all times with a minimum of inconvenience. For use in case of an emergency, the mask is removed from the container and placed over the person's mouth and nostrils for adsorbing toxic gases breathed therethrough, preventing inhalation thereof. Securing means for attaching the mask to the user's face may be provided to free the hands of the user for other uses. The entire mask simply is disposed of after use.
摘要:
A method of heat-treating and, particularly, annealing, a ductile cast iron pipe in the form as centrifugally held against the wall of a centrifugal casting mold. The casting within the mold is heat-treated by introducing a hot gas of elevated temperature into the hollow of the casting. At the initial stage, the casting within the mold is in red-hot condition and, therefore, introduction of the hot gas into the hollow of the casting results in control of the dissipitation of heat energies from the red-hot casting to delay or slow down a cooling rate of the casting.
摘要:
This application discloses a marbleized soap bar plodder comprising a multi-thread extruding screw, each of the threads of which extrudes a different colored soap material, and a means for closing one or more of the thread grooves of said extruding screw, wherein said closure means is not fixed to the screw.
摘要:
A refining means for obtaining high duty spheroidal graphite cast iron through heating molten pig iron in an arc furnace to above the decomposition temperature of silicon oxide in the presence of carbon, such as 1500.degree.C, whereupon a refining agent containing quick lime, graphite powder, calcium silicate, and calcium carbonate is allowed to react in refining through deoxidation and de-sulphurization.
摘要:
An electronic component has a substrate, a die bonding pad provided on an upper surface of the substrate, a semiconductor element bonded onto the die bonding pad by a die bonding resin, a conductive pattern disposed adjacent to the die bonding pad, and a coating member covering the conductive pattern. At least an outer peripheral portion of a surface of the die bonding pad is made of an inorganic material. The inorganic material of the outer peripheral portion is exposed. The die bonding pad and the conductive pattern are separated by an air gap such that the coating member does not come into contact with the die bonding pad.
摘要:
An electronic component has a printed substrate having a die bonding portion, a semiconductor element rigidly bonded to the die bonding portion of the printed substrate by a die bonding resin, and a wire bonding terminal formed by a conductor pattern on the printed substrate that is connected to the semiconductor element by a bonding wire. A groove portion located at a level lower than the conductor pattern of the printed substrate is formed in a region located on at least a die bonding portion side in a region surrounding the wire bonding terminal.
摘要:
An electronic component has a board, a semiconductor element mounted on an upper surface of the board, a ground electrode formed in a region surrounding the semiconductor element on the upper surface of the board, a conductive cap that overlaps the board such that the semiconductor element is covered therewith, and a conductive joining member that joins a whole periphery of a lower surface of the conductive cap to the ground electrode. The conductive cap includes a pressing portion on the lower surface thereof The lower surface of the conductive cap and the ground electrode are joined by the conductive joining member on an outer peripheral side of the pressing portion.