摘要:
Novel phosphorsulfide derivatives of deoxynucleosides or deoxynucleotides are provided, which have the general formula: ##STR1## wherein R.sup.1 is a hydroxy-protecting group; R.sup.2 is a phosphate-protecting group; R.sup.3 is an aryl group; B.sub.1 and B.sub.2 may be the same or different and each are a base residue which may have a protecting group; and n is zero or a positive integer, provided that if n is 2 or larger, the respective R.sup.2 may be the same or different. They are prepared by reacting a deoxynucleoside or deoxynucleotide with a 1,2,4-triazolylphosphine compound and are useful as intermediates for the preparation of oligodeoxy-nucleotides.
摘要:
Disclosed is a laser light source apparatus. The laser light source apparatus includes a pumping light source and a pair of resonator mirrors. In the laser light source apparatus, the pumping light source includes at least a laser medium and a wavelength conversion element, and the laser medium is pumped by light having a multi-transversal mode pattern and the wavelength conversion element are irradiated with a line beam of fundamental wave obtained by the oscillation by the laser medium to output a line beam of converted wave. The laser light source apparatus further includes at least one reflector bending light path is provided in the resonator such that a longitudinal direction of the line beam of fundamental wave is approximately perpendicular to an incident plane of the reflection unit.
摘要:
A stencil printing ink container includes an ink container body. An ink charge port is provided in an end wall of the ink container body and an inner plug is mounted on the ink charge port. The inner plug is provided with an ink discharge port smaller in the outer diameter than the inner diameter of the ink charge port and gives an ink suction nozzle of an ink pump access to the ink discharge port.
摘要:
A locus interpolation device characterized in that the device is attached to an end of a wrist of a movable structure such as a robot, with a tool supported by the device, and a circular or noncircular locus is interpolated by controlling the operation of the tool independently from that of the movable structure.
摘要:
An elongate molding member for automobile body components and the like, as well as a method of producing such molding members are disclosed. The molding member (11) includes a core element (12), and a cover element (13) made of synthetic resin material co-extruded about the core element (11). The core element (11) has a strip-like ornamental portion (15) which is different in color from the synthetic resin material of the cover element (13) and is to be disclosed outside by removing a separable portion (18) defined by at least one longitudinal slit (17) in the cover element (13). The ornamental portion (15) of the core element (12) has a longitudinally variable width (W.sub.1, W.sub.2) to provide an aesthetically refined appearance and to thus satisfy various ornamental design requirements.
摘要:
An adhesive composition comprising 2-cyanoacrylate and at least one compound selected from the group consisting of R.sub.1 --CH.sub.2 OH, ##STR1## R.sub.1 --CHO, R.sub.1 --CHO hydrate, ##STR2## pentafluorophenol, hexachloroacetone, hexachloroacetone hydrate, chloral and chloral hydrate as cationic-polymerization inhibitor. In the above formulas, R.sub.1 is a fluorinated alkyl or aryl group having up to 12 carbon atoms, and R.sub.2 and R.sub.3 are fluorinated or non-fluorinated alkyl or aryl groups having up to 12 carbon atoms. The above adhesive composition has an excellent storage stability and an improved bonding strength.
摘要:
A semipermeable membrane supporting material formed of a non-woven fabric comprising two or more main synthetic fibers having different fiber diameters and a binder synthetic fiber and having a semipermeable membrane application surface and a non-application surface having a semipermeable membrane application surface:non-application surface smoothness ratio of from 5.0:1.0 to 1.1:1.0, a semipermeable membrane supporting material formed of a non-woven fabric comprising a main synthetic fiber and a binder synthetic fiber, having an average breaking length of less than 4.0 km in the machine direction (MD) and the cross direction (CD) at an elongation by 5% and having a dimensional change ratio, measured under heat in the cross direction (CD), of −0.3 to +1.0%, a spiral-type semipermeable membrane element including the above semipermeable membrane supporting material, and a process for producing a semipermeable membrane supporting material.
摘要:
A stencil forming apparatus in which a stencil for a stencil printing formed from a rolled stencil sheet, includes: a guide roller; a rotatable platen roller having a central axis which is in parallel with the guide roller; a thermal head having a plurality of heat generating elements, and provided above the platen roller, wherein the stencil sheet pulled out of the rolled stencil sheet is passed through the platen roller and the thermal head through the guide roller and is subjected to thermally making fine holes thereon (the stencil of the stencil printing); and an intermediate roller provided between the platen roller and the guide roller wherein the intermediate roller is vertically movable in a predetermined range.
摘要:
A process for the preparation of an organosilicon compound represented by formula (3): ##STR1## which process comprises reacting an organosilicon compound represented by formula (1) with a (meth)acrylic acid ester represented by formula (2) in the presence of a catalyst: ##STR2## The symbols in the above formulae are defined in the specification.