Abstract: A method for efficiently purifying 5? protected 2?-deoxypurine nucleosides, efficient production of which has previously been difficult. Impurities can be separated by obtaining the 5? protected 2?-deoxypurine nucleoside as an inclusion crystal including a solvent such as that having a nitrile structure in order to purify the 5? protected 2?-deoxypurine nucleoside at a high purity. This invention enables synthesis of highly purified protected deoxypurine nucleosides easily on a large scale, which has previously been performed by column chromatography method.

Abstract: The invention provides a method for producing a cytosine nucleoside compound from pentose-1-phosphate and cytosine or a derivative thereof using a nucleoside phosphorylase reactive to cytosine or a bacterium having the enzyme activity. The invention also provides a method for specifically reducing an activity to degrade the substrates or the product, resulting in efficient production of the cytosine nucleoside compound. According to the invention, little by-product is produced in producing cytonucleocide compounds.

Abstract: The metallocene compound according to the invention and the olefin polymerization catalyst containing the compound are intended to produce a catalyst capable of preparing an isotactic polymer with a high polymerization activity. The metallocene compound contains a substituted cyclopentadienyl group and a (substituted) fluorenyl group and has a structure wherein these groups are bridged by a hydrocarbon group or the like. The process for preparing a metallocene compound according to the invention is intended to selectively prepare a specific metallocene compound so as not to produce an isomer, and in this process an intermediate product is synthesized by a specific method.

Abstract: The object of this invention is to obtain an electrophotographic toner for electrostatic developing which has excellent grindability, fixing properties, anti-offset properties, storage properties and environmental stability. The binder resin for toner of this invention is characterized by a structure in which a polyester resin and a styrene resin are connected together through an epoxy radical derived structural unit. Qwing to the usage of the binder resin for toner described above, the toner of this invention has a balance of good fixing properties and anti-offset properties and has excellent environmental stability. Another binder resin for toner of this invention is characterized by having a wax derived structure along with the above structure, and it has improved grindability and storage properties along with the above properties.

Abstract: A film carrier tape for mounting electronic devices thereon having a mounting unit in which a wiring pattern is formed by etching on a base material, wherein the mounting unit has a target mark to be a reference of an alignment for carrying out final defect marking in a target position on the mounting unit by marking means as a pattern formed on the base material by the etching, and a defect marking method using the same are provided.

Abstract: A sulfur-containing compound has a structure represented by formula (1): (wherein R1 represents a hydrogen atom, a reactive terminal group, a straight, branched or cyclic alkyl group having 1 to 10 carbon atoms and a reactive terminal group or its thia derivative thereof, an aryl group, or an aralkyl group; Y represents an oxygen atom, a sulfur atom, a selenium atom, or a tellurium atom; R represents a substituted or unsubstituted bivalent hydrocarbon group having 1 to 10 carbon atoms, which may be thianated; n represents an integer of 0 to 3; X1 is substituted for any one of groups R2 to R7 of a partial structure represented by formula (2) in which the groups R2 to R7 other than the group substituted by X1 are independently a hydrogen atom or a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms; and R1 is not a group having a (meth)acryl group when Y is an oxygen atom.

Abstract: The present invention relates to a process for producing optically active ?-nitroalcohols wherein nitroaldol reactions of aldehydes and nitroalkanes are carried out in the presence of a base and an optically active metal complex catalyst represented by the following formula (c): (where R4, R5, and R6 represent a hydrogen atom, an alkyl group, an alkenyl group, an aryl group, an acyl group, an alkoxycarbonyl group, or an aryloxycarbonyl group, and R5 and R6 may be linked together to form a ring; X* represents a hydrocarbon group having an asymmetric carbon atom or axial asymmetry; M represents a cobalt ion or a chromium ion; and Y represents an anion capable of forming a salt when the valence of M is larger than that of a ligand).

Abstract: A sodium-based dechlorinating agent is added to a flue gas; hydrogen chloride contained in this flue gas is removed as residue of dechlorination; the thus removed residue of dechlorination is dissolved by adding water; water-insoluble constituents are separated from the resulting aqueous solution; and after adjusting pH of the aqueous solution remaining after separation of the water-insoluble constituents, mercury, dioxin, and the like are removed and discharged. The sodium-based dechlorinating agent is mixed with a hydrophilic anti-caking agent, with an angle of repose of 40° or more, a dispersibility of less than 50, and a floodability index value of less than 90. This permits inhibition of occurrence of a pressure drop and leakage in the filter cloth of the dust collector.

Abstract: A polypropylene resin composition comprises (A) (a-1) a specific crystalline propylene/ethylene block copolymer or (a-3) a polymer mixture comprising the (a-1) and (a-2) a specific crystalline propylene-homopolymer in specific ratio, in an amount of 5 to 56% by weight, (B) a hydroxyl group-containing polypropylene having an intrinsic viscosity [?] of 0.8 to 2.0 dl/g and a melting point of 150 to 168° C., in an amount of 10 to 45% by weight, (C) a copolymer rubber of ethylene and an ?-olefin having a melt flow rate (ASTM D-1238, 230° C., load of 2160 g) of 0.

Abstract: The present invention was investigated for the purpose of providing a binder resin for toner which is excellent in the low temperature fixing property which can cope with the development of high-speed copier machines, and is excellent in the offset resistance, blocking resistance, pulverizability and development durability. As a result, it was found that the purpose could be achieved by using, as a binder resin for toner, a resin that can be obtained from at least three different vinyl polymers with different molecular weight, contents of functional groups, and preferably from a crosslinking agent having the vinyl polymer structure, and that contains a specific gel component. This resin has excellent melting property at low temperatures, and has suitable performance as a material for toner and a toner in high-speed copier machines.

Abstract: There is provided a cerium-based abrasive containing cerium oxide as a main component, in which the abrasive particles composing the abrasive are coated with a coating layer containing at least either one of a silicon component of silicon or a silicon compound and an aluminum component of aluminum or an aluminum compound. The cerium-based abrasive can be produced by wet-dispersing the cerium-based abrasive in a dispersion medium to obtain a slurry and carrying out surface treatment by adding a treatment solution containing at least either one of the silicon compound and the aluminum compound to the slurry. Further, the cerium-based abrasive can be produced by carrying out surface treatment by adding a treatment solution containing at least either one of the silicon compound and the aluminum compound to the slurry during the pulverization step or after the pulverization step in the conventional cerium-based abrasive production process and after that roasting and classifying the obtained cerium-based abrasive.

Abstract: In a system for observing the ground based on various data items measured at one or more observation points by at least one measuring instrument, the measured data items are collected in a collection center, it is determined whether at least one of the measured data items is abnormal based on expert knowledge, a re-measurement instruction is given to the measuring instrument in a case where at least one of the measured data items is abnormal, and the measured data items are edited according to contract conditions for each user to generate measurement data for users in a case where it is determines that the measuring instrument does not malfunction as a result of re-measurement. Thus, the measurement data satisfying users' demands can be generated with good quality and high reliability, based on the measurement data items obtained at one or more observation points.

Abstract: A pattern can be precisely formed by irradiating, with an active energy beam, a positive sensitive resin composition according to this invention comprising a base polymer, an ether-bond-containing olefinic unsaturated compound and an acid-generating agent, where the base polymer is a copolymer comprising the structural units represented by formulas (1) to (3): where R1 and R3 are each independently hydrogen or methyl and R2 is C1-C6 straight or branched unsubstituted alkyl or C1-C6 straight or branched substituted alkyl, wherein a, b and c are 0.05 to 0.7, 0.15 to 0.8 and 0.01 to 0.5, respectively and a+b+c=1.

Abstract: There is provided a cerium-based abrasive containing cerium oxide as a main component, in which the abrasive particles composing the abrasive are coated with a coating layer containing at least either one of a silicon component of silicon or a silicon compound and an aluminum component of aluminum or an aluminum compound. The cerium-based abrasive can be produced by wet-dispersing the cerium-based abrasive in a dispersion medium to obtain a slurry and carrying out surface treatment by adding a treatment solution containing at least either one of the silicon compound and the aluminum compound to the slurry. Further, the cerium-based abrasive can be produced by carrying out surface treatment by adding a treatment solution containing at least either one of the silicon compound and the aluminum compound to the slurry during the pulverization step or after the pulverization step in the conventional cerium-based abrasive production process and after that roasting and classifying the obtained cerium-based abrasive.

Abstract: It is an object of the present invention to prevent temperature decrease in a border portion of each of heating coils and to enable to eliminate an influence given by the change in a load state. In order to attain this object, an induction heating unit 400 according to the present invention is provided with control units 420 (420a to 420d) respectively corresponding to a plurality of heating units 310 (310a to 310d). A phase detector 424d of the control unit 420d obtains a phase difference between an output current (heating coil current IL4) of an inverter 314d detected by a current transformer 160d and a reference signal outputted by a reference signal generating section 426, and inputs it to a drive control section 422d. The drive control section 422d adjusts an output timing (phase) of a gate pulse to be given to the inverter 314d so as to make a phase of the heating coil current IL4 of the inverter 314d coincide with a phase of the reference signal outputted by the reference signal generating section 426.

Abstract: A surface protecting adhesive film for a semiconductor wafer in which an adhesive layer is formed on one surface of a base film, wherein the adhesive layer comprises 100 weight parts of a polymer (A) having a functional group capable of reacting with a cross-linking agent and a temperature in a range of from ?50° C. to 5° C. at which tan ? of a dynamic viscoelasticity is maximized, from 10 weight parts to 100 weight parts of a polymer (B) having a functional group capable of reacting with a cross-linking agent and a temperature in a range of from more than 5° C. to 50° C. at which tan ? of a dynamic viscoelasticity is maximized, and from 0.

Abstract: A parallel reaction executing apparatus comprises an electronic computer and a parallel reaction executing section, the electronic computer substantially controlling a function of the parallel reaction executing section in addition to a current computing process, and executing a number of reactions in parallel under the control of the apparatus, wherein the parallel reaction executing section provided by the electronic computer controls parallel reactions in accordance with a program optimized after converting a higher level language produced in a predetermined language into a command of controlling the parallel reaction executing section.

Abstract: A phthalocyanine compound represented by the following general formula (I) and the mixture thereof, and an optical recording medium containing the compound/mixture in its recording layer. wherein in formula (I), M is two hydrogen atoms, a divalent metal atom, a mono-substituted trivalent metal atom, a di-substituted tetravalent metal atom, or an oxymetal, and L1, L2, L3 and L4 are each independently formula (a), formula (b), or formula (c): wherein X, Y, Z and R are defined.

Abstract: This invention relates to a composition comprising (A) an ethylene-?-olefin having 3 to 20 carbon atoms-non-conjugated polyene copolymer, (B) a specific fine-powdered silicic acid and/or a silicate having a specific surface area of 5 to 500 m2/g (BET adsorption amount: ISO 5794/1, Annex D), (C) at least one kind of ?,?-unsaturated carboxylic acid metal salts, (D) an organic peroxide, further optionally (E) one antioxidant selected from sulfur-containing antioxidants, phenolic antioxidants and amine antioxidants, and/or (F) sulfur, and this invention relates to a rubber product obtainable by crosslinking the above composition.

Abstract: Graphite particles having a bent laminate structure inside each particle are produced by feeding, into an impact grinder, graphite particles having an average particle diameter of 5 mm or less together with a gas current to apply an impact to the graphite particles to form, by a compression force, a bent laminate structure inside each graphite particle. The resulting graphite particles have an average particle diameter of 100 ?m or less, are low in anisotropy, have a nearly spherical shape, and are highly crystalline.