Abstract: To provide a refrigerating unit using ammonia as a refrigerant, which uses a lubricant that is excellent in the compatibility with an ammonia refrigerant as well as in the lubricity and the stability.

Abstract: A hydrocracking catalyst has a carrier that has particles of a compound oxide and a binder present between these particles, and at least one metal component selected from Group 6, Group 9 or Group 10 of the Periodic Table supported on the carrier. The catalyst has a median pore diameter of 40 to 100 Å and the volume of pores whose pore diameter falls within a range of 40 to 100 Å is at least 0.1 mL/g. Moreover, the volume of pores of the catalyst whose pore diameter falls within a range of 0.05 to 5 &mgr;m is 0.05 to 0.5 mL/g, and the volume of pores whose pore diameter is 0.5 to 10 &mgr;m is less than 0.05 mL/g. This catalyst is mechanically strong enough for practical use and has a high conversion rate and middle distillate selectivity in hydrocracking of hydrocarbon oils, particularly vacuum gas oil.

Abstract: The present invention provides a lubricant for a compression type refrigeration system using ammonia as a refrigerant, which comprises polyether compounds and aromatic amine compounds or phenothiazine compounds, and preferably further comprises alcohol compounds such as polyhydric alcohol partial ether and/or benzotriazole compounds. Further, the present invention provides a working fluid composition comprising the lubricant and an ammonia refrigerant, and a refrigeration system which is filled with the working fluid composition. The lubricant has not only good compatibility with ammonia, but excellent stability and lubricating property, and therefore can suitably used in a compression type refrigeration system using an ammonia refrigerant that does not have the possibility of ozone layer depletion and global warming phenomenon.

Abstract: An Ni—Fe alloy material suitable for forming a ferromagnetic Ni—Fe alloy thin film is provided. The magnetic thin film produces a small number of particles during sputtering, and excels in corrosion resistance and magnetic properties. A method of manufacturing an Ni—Fe alloy sputtering target used to make the thin film is also provided. In addition, an Ni—Fe alloy sputtering target for forming magnetic thin films is provided. The sputtering target is characterized in that it has: an oxygen content of 50 ppm or less; an S content of 10 ppm or less; a carbon content of 50 ppm or less, and a total content of metal impurities other than the alloy components of 50 ppm or less. Such an Ni—Fe alloy target can be produced by melting and alloying high-purity materials obtained by dissolving the raw materials in hydrochloric acid, and performing ion exchange, activated-charcoal treatment, and electrolytic refining.

Abstract: An object is to provide a homogeneous composite metallic soap containing molybdenum in high yields. A composite metallic soap containing molybdenum is produced by reacting a fatty acid and a molybdenum compound under conditions where the fatty acid is in excess to synthesize a molybdenum soap and then adding a metal compound other than the molybdenum compound for reaction with the excess amount of fatty acid or by reacting a molybdenum compound and a fatty acid in the presence of a fatty acid and a metal compound that form a metallic soap having a softening point of 120° C. or less.

Abstract: A process for producing a high-purity Mn material comprising the steps of premelting crude Mn at 1250-1500° C. and vacuum distilling the melt at 1100-1500° C. The degree of vacuum during the vacuum distillation ranges from 5×10−6 torr to 10 torrs. A crucible for use in the vacuum distillation is a double crucible, which consists of inner and outer crucibles, and a carbon felt packed in the space therebetween. A high-purity Mn material for thin film deposition which contains a total of not more than 100 ppm impurity metallic elements, not more than 200 ppm oxygen, not more than 50 ppm nitrogen, not more than 50 ppm S, and not more than 100 ppm C.

Abstract: There is provided copper targets for sputtering capable of forming a deposition film with low electric resistance indispensable for high-speed operation elements and also with excellent thickness uniformity, and such thin copper films. A high-purity copper sputtering target is characterized by comprising up to 0.1 ppm each Na and K, up to 1 ppm each Fe, Ni, Cr, Al, Ca, Mg, up to 5 ppm each carbon and oxygen, up to 1 ppb each U and Th, and, excluding gaseous constituents, more than 99.999% copper. Preferably the average grain size on the sputter surface is 250 &mgr;m or below, with its dispersion thin plus or minus 20%. I(111)/I(200) of X-ray diffraction peak intensity on the sputter plane is at least 2.4 with its dispersion within plus or minus 20%.

Abstract: The present invention provides a cyclic tetrapeptide derivative represented by the following general formula (I) or a pharmaceutically acceptable salt thereof: 1

Abstract: The invention has an object to provide a solid chloride absorbent which can efficiently absorb inorganic chlorides such as hydrogen chloride flowing out from a process in which a heavy naphtha and the like are treated and inorganic chloride derived from crude oil, and which is difficult to powder and soften after absorbing the chlorides. The solid chloride absorbent according to the invention comprises zinc oxide, a porous refractory inorganic matter and an inert binder, has a long life, and hardly releases the absorbed chlorides.

Abstract: Pseudo-boehmite, which is a raw material for a catalyst carrier for hydrogenation refining, is produced by mixing, under a predetermined condition, an aluminate aqueous solution produced from an alkaline etching step for aluminum in an alumite treatment and an acidic aluminum aqueous solution produced from an anodization step for aluminum in the alumite treatment. Pseudo-boehmite can be also produced by maturing, with an alkaline solution, an aluminum hydroxide sludge produced from a washing step for aluminum in the alumite treatment. It is possible to establish a method for producing pseudo-boehmite, which makes it possible to reutilize a resource at extremely low cost by utilizing a treatment waste liquid and a sludge in an alumite treatment site.

Abstract: A method for producting a solid acid catalyst is provided which produces a shaped material of a solid acid catalyst containing a sulfureous component but have a high activity and having a practically sufficient handleability and mechanical strength involves the steps of (a) fabricating a support containing a portion of zirconia and/or hydrated zirconia and a portion of alumina and/or hydrated alumina and having a peak diameter in the range of 0.05 to 1 &mgr;m in a pore diameter distribution of 0.05 to 10 &mgr;m; and having a sulfuerous component supported on the support or (b) fabricating a support containing a portion of zirconia and/or hydrated zirconia and a portion of alumina and/or hydrated alumina and including pores having a pore diameter of not less than 0.05 &mgr;m and not more than 1 &mgr;m occupying a pore volume of 0.05 to 0.5 ml/g and pores having a pore diameter of about 1 &mgr;m and not more than 10 &mgr;m occupying a pore volume of below 0.

Abstract: A cyclic tetrapeptide derivative represented by the general formula (I): wherein: R11, R12, R21 and R22 independently denote a monovalent group selected from hydrogen, a linear or branched alkyl group with 6 or less carbon atoms, benzyl group, 4-methoxybenzyl group, 3-indolylmethyl group, (N-methoxy-3-indolyl) methyl group, (N-formyl-3-indolyl)methyl group, etc.; R3 denotes a divalent group selected from a linear chained hydrocarbon group with 3 or 4 carbon atoms, or the linear branched hydrocarbon group having a branched chain added to the chain, or a divalent group substituted with a heteroatom; R4 denotes a divalent chained hydrocarbon group with 4 to 6 carbon atoms, or a divalent group derived from said hydrocarbon group by addition etc.

Abstract: The invention has an object to provide a solid chloride absorbent which can efficiently absorb inorganic chlorides such as hydrogen chloride flowing out from a process in which a heavy naphtha and the like are treated and inorganic chloride derived from crude oil, and which is difficult to powder and soften after absorbing the chlorides. The solid chloride absorbent according to the invention comprises zinc oxide, a porous refractory inorganic matter and an inert binder, has a long life, and hardly releases the absorbed chlorides.

Abstract: Hydrorefining catalyst contains 0.1 to 25 wt % in total of at least one hydrogenation active metal element selected from elements of Group 6, Group 8, Group 9, and Group 10 of the Periodic Table, and 0.1 to 3 wt % potassium on a carrier formed of porous inorganic oxide. The concentration distribution of the hydrogenation active metal element is higher in the central part than in the peripheral part of the catalyst, and the concentration distribution of potassium is higher in the peripheral part than in the central part of the catalyst. The pores on the outside surface of the catalyst are not plugged by the metal content of hetero compounds and hetero compounds can be efficiently diffused to inside the catalyst. As a result, long-term retention of a state of high activity is possible.

Abstract: The present invention relates to a type 2 helper T cell-selective immune response inhibitor, an immune response regulator and an anti-allergic agent, individually comprising, as an active ingredient, a purine derivative represented by General Formula (I): wherein R2 is hydrogen or a hydrocarbon group in which —CH2— not directly bound to the purine skeleton may be substituted by CO, SO2, O or S, and C—H not directly bound to the purine skeleton may be substituted by N, C-halogen or C—CN; R6 is hydroxyl, amino or amino which is mono- or di-substituted by a hydrocarbon group(s); R8 is hydroxyl, mercapto, acyloxy or hydrocarbon group-substituting oxycarbonyloxy; and R9 is a hydrocarbon group in which —CH2— not directly bound to the purine skeleton may be substituted by CO, SO2, O or S, and C—H not directly bound to the purine skeleton may be substituted by N, C-halogen or C—CN; or its tautomer or a salt of the purine derivative or the tautomer

Abstract: A process for producing a low pour-point oil which permits the production of a lower pour point oil without severer hydrodewaxing conditions is disclosed, which comprises hydrodewaxing a mineral oil fraction, which has been separated from a crude oil by distillation and has a boiling point ranging from 250 to 600° C., at a temperature range of from 250° C. to 500° C. in the presence of a zeolite catalyst; and separating a lighter fraction by distillation.

Abstract: A method for producing a compound semiconductor single crystal, comprises the steps of: using a crucible having a bottom, a cylindrical shape, a diameter increasing portion having a reversed conical shape in a lower end side of the crucible, and a set portion for a seed crystal in a center of the bottom of the diameter increasing portion; setting a seed crystal in the seed crystal set portion of the crucible; putting a raw material of the compound semiconductor and an encapsulating material into the crucible; enclosing the crucible in an inner container; thereafter setting the inner container in a vertical type furnace; heating the raw material and the encapsulating material by a heating means to melt; and solidifying the obtained raw material melt from the seed crystal toward an upper side with annealing the raw material melt from a lower side to grow a single crystal of the compound semiconductor; wherein a rate of crystal growth at the diameter increasing portion of the crucible is made not less than 20 mm

Abstract: The present invention relates to a heterocyclic compound of the following general formula (I): wherein X is sulfur atom, oxygen atom or —NR3— (R3 may form a heterocyclic ring or a substituted heterocyclic ring with R1 via the nitrogen atom), R1 is alkyl group, substituted alkyl group, aryl group, substituted aryl group, heterocyclic group or substituted heterocyclic group, and R2 is hydrogen atom, halogen atom etc.; or its pharmaceutically acceptable salt and interferon inducers, antiviral agents, anticancer agents and therapeutic agents for immunologic diseases comprising the compound (I) or its pharmaceutically acceptable salt as active ingredients.

Abstract: &bgr;-Amino-&agr;-hydroxycarboxylic acid derivatives represented by the following formula and salts thereof which are useful as human immunodeficiency virus (HIV) protease inhibitors: The compounds are effective for treating a patient suffering from AIDS and AIDS related diseases.

Abstract: The present invention relates to a shaped solid acid catalyst for the isomerization of hydrocarbons and so on, which has a high activity and is excellent in strength and easily handleable, and processes for the preparation thereof. This catalyst comprises a support comprising portions of zirconia having a tetragonal form and portions of alumina, and a sulfureous component and, if necessary, a Group 8, 9 or 10 metal component both being supported on the support, and has a specific surface area of 150 m2/g or above. The catalyst can be prepared by kneading aluminum hydroxide, zirconium hydroxide and a sulfureous compound, shaping the kneaded mixture, calcining the shaped material at such a temperature as to form tetragonal zirconia and, if necessary, supporting a Group 8, 9 or 10 metal component on the calcined material and calcining the resulting molding at 300 to 700° C.