摘要:
A method of curing dental resin according to this invention is characterized by adding a morpholine derivative to a conventional curing process, more particularly, the dental resin is cured by polymerizing (1) a polymerizable compound having at least one ethylenically unsaturated double bond in the presence of (2) a morpholine derivative, (3) 1-cyclohexyl-5-ethylpyrimidinetrione, (4) an organometal compound and (5) an organohalogen compound, in which the self-polymerizing dental resin is polymerized or cured more rapidly than is possible with the conventional process and without detriment to its transparency, color tone stability and physical properties.
摘要:
In a green tire charging apparatus for a tire vulcanizing machine according to the present invention, provision is made such that a vertically movable chuck body is inserted into a tire, chuck segments which are synchronously slidable in the radial direction are expanded to concentrically hold an upper bead portion by upper projections of centering rods, the chuck body is raised to insert the upper bead portion into an upper bead ring of a metal mold, subsequently the upper bead portion is held by holder arms of holders, the chuck body is lowered to hold a lower bead portion of the tire by lower projections of the centering rods, and the lower bead portion is inserted into a lower bead ring of the metal mold. Owing to the above-mentioned the upper and lower bead portion of provision, even a deformed green tire can be surely set on the upper and lower bead rings, respectively, of the metal mold.
摘要:
Lipid A monosaccharide analogues of the following general formula: ##STR1## wherein R.sub.1 is a hydrogen atom or a hydroxyl group, 1 is an integer of 8-14, m is an integer of 11-17 integer, and n is 8-14 integer.
摘要:
An objective optical system for endoscopes comprising, in the order from the object side, a front negative lens unit, an aperture stop, a positive lens unit comprising at least one positive lens component, and an infrared cut filter arranged immediately before said aperture stop, said objective optical system being adapted so as to allow rays to be incident on said filter at heights lower than the outside circumference of said filter.
摘要:
An engine brake system comprising, in combination, a power absorbing oil pump driven in operative linkage with the crank shaft of the engine and a mechanism for controlling discharge pressure of said oil pump is disclosed. The pressure control mechanism comprises a main valve designed to be opened with a lift inversely proportional to the braking torque of the engine, a mechanism for adjusting the pressure on the back side of the main valve and a valve for switching the pressure on the back side of the main valve, all of which are provided in a valve box having an oil hole communicated with the discharge port of the oil pump. According to this system, in accordance as the engine speed increases, the lift of the main valve is reduced to elevate the power absorbed by the oil pump. Thus, this system is particularly useful for engine brake for vehicles.
摘要:
A presensitized lithographic plate comprises a light-sensitive layer containing silver halide, a reducing agent, a polymerizable compound and a hydrophilic binder provided on a hydrophilic support wherein the silver halide, the reducing agent and the polymerizable compound are contained in microcapsules which are dispersed in the light-sensitive layer.
摘要:
In order to enhance resolving power and making the fabrication of an optical system easy, the image pickup device is of an arrangement that a color-separating optical means is disposed between an objective lens and a solid-state image sensor, and those images by the respective color lights which are focused at mutually displaced positions on the solid-state image sensor are integrated into one unified image by a signal processing circuitry to thereby collect also the image-informations corresponding to those areas lying between the picture elements. The color-separating optical means may be formed by either one of a color dispersion prism, a dichroic mirror, a diffraction grating, a glass block made of a medium of heterogeneous material and a light-divider containing liquid crystal.
摘要:
A presensitized lithographic plate comprises a hydrophilic layer and a light-sensitive layer containing silver halide, a reducing agent, a polymerizable compound and a hydrophilic binder provided in order of a hydrophilic support wherein the silver halide, the reducing agent and the polymerizable compound are contained in lipophilic microcapsules which are dispersed in the light-sensitive layer. Another presensitized lithographic plate comprising a hydrophilic layer and a light-sensitive layer containing a photo polymerizable composition or a photo polymerizable compound provided in order on a hydrophilic support wherein the photo polymerizable composition or the photo polymerizable compound are contained in lipophilic microcapsules which are dispersed in the light-sensitive layer is also disclosed.
摘要:
A volume-reducing solidification treatment method for radioactive waste liquid containing boron primarily in the form of boric acid or borates is disclosed.After an alkali is added to the waste water to adjust pH thereof, and optionally after evaporation concentration is carried out, soluble calcium compounds such as Ca(OH).sub.2 are added, the waste water is stirred at a specific temperature to form insoluble calcium borate aged at a lower temperature than that of forming borate, and evaporation and concentration is carried out, which raises the concentration of the solid component. The concentrated liquid obtained is solidified with cement.The concentrated liquid may also be dried into a powder using a thin film evaporator.Liquid containing insoluble calcium borate obtained after solid-liquid separation may be recycled for use as a waste water pH adjusting agent, or, may be evaporated and concentrated, and the concentrated liquid may be solidified with cement along with the concentrated solid component obtained through solid-liquid separation.
摘要:
[21-Leucine] human urogastrone, hUG, comprising a polypeptide represented by the specified amino acid sequence has been found to be equivalent to the known hUG which has 21-Met and is disclosed together with its syntheses. Double-stranded polydeoxyribonucleotides comprising a structural gene for expressing the hUG, a recombinant plasmid comprising a structural gene for expressing the hUG, and E. coli transformed by the recombinant plasmid are also disclosed. Thanks to the substitution of Met in the known hUG by Leu, the peptide of hUG can now be produced by a conventional or typical method in which a genetically engineered precursor fused polypeptide is cleaved by cyanogen bromide at Met in the fused polypeptide.