摘要:
A process for producing methacrolein and methacrylic acid by oxidizing isobutyl aldehyde with molecular oxygen or molecular oxygen-containing gas in the vapor phase characterized by the use of a catalyst of heteropoly-acid or a mixture of heterpoly-acid and its salt which has the general formula:Mo.sub.a V.sub.b P.sub.c X.sub.d Y.sub.e O.sub.fwherein Mo, V, P and O represent respectively molybdenum, vanadium, phosphorus and oxygen, X represents one or more elements selected from the group consisting of copper, tin, thorium, aluminum, germanium, nickel, iron, cobalt, zinc, titanium, lead, rhenium, zirconium, cerium, chromium, bismuth and arsenic, Y represents one or more elements selected from the group consisting of potassium, rubidium, cesium and thallium and a, b, c, d, e and f represent the atomic ratio of the elements where,a is 10,b is a number of 6 or less than 6 excluding 0,c is a number of 0.5 to 6,d is a number of 3 or less than 3 excluding 0,e is a number of 0 to 0.8,f is a number determined depending on the valency and atomic ratio of other elements.
摘要:
A lighting device is provided with an illumination unit including two or less LED light sources. The illumination unit uses the two or less LED light sources to emit light of a short wavelength band and light of a long wavelength band. An output varying unit functions to vary an output of at least the long wavelength band light. When the output varying unit receives a varying signal, the output varying unit functions to decrease the output of at least the long wavelength band light.
摘要:
The polynucleotide construct of (1) or (2) below is used to perform ribosome display, CIS display and/or mRNA display in order to screen a Fab against an antigen of interest: (1) a polynucleotide construct which monocistronically comprises a ribosome-binding sequence, Fab first chain-coding sequence, linker peptide-coding sequence, Fab second chain-coding sequence and scaffold-coding sequence in this order, and further comprises at its 3′-end a structure necessary for maintaining a complex with the Fab encoded by itself, and (2) a polynucleotide construct which comprises a Fab first chain-expressing cistron and a Fab second chain-expressing cistron each containing a ribosome-binding sequence, a Fab first chain-coding sequence or Fab second chain-coding sequence, and a scaffold-coding sequence in this order, the first Fab-expressing cistron further comprising at its 3′-end a ribosome stall sequence, said Fab second chain-expressing cistron further comprising at its 3′-end a structure necessary for maintaining a complex with the Fab encoded by itself.
摘要:
The present invention is intended to provide a process capable of efficiently producing highly purified succinic acid from an alkali metal succinate by a simple separation and purification process.The process for producing succinic acid in the present invention comprises (1) the step to add sulfuric acid into a solution containing an alkali metal succinate, (2) the step to precipitate and remove the crystal of an alkali metal sulfate from said solution, and (3) the step to precipitate and recover the crystal of succinic acid. The removal of the crystal of an alkali metal sulfate in the step (2) is performed by a solid-liquid separation in a state that the crystal of alkali metal sulfate is precipitated by concentrating and heating the solution that is obtained by adding sulfuric acid in the step (1) and succinic acid is dissolved in the solution.
摘要:
A cosmetic composition comprising titanium oxide coated with one or both of silica and alumina or zinc oxide coated with one or both of silica and alumina, and a thickening polymer having a carboxyl group in the side chain, preferably a carboxyvinyl polymer, wherein when 10% by mass of silica- and/or alumina-coated titanium oxide or silica- and/or alumina-coated zinc oxide is dispersed in an aqueous solution containing 0.133% by mass of a carboxyvinyl polymer, the viscosity after the passing of 100 hours is 50% or more of the initial viscosity. A cosmetic composition comprising titanium oxide coated with one or both silica and alumina or zinc oxide coated with one or both of silica and alumina, and a thickening polymer having a carboxyl group in the side chain of the invention, can maintain emulsion stability by thickening of polymer for a long period of time and can be widely and suitably used for ultraviolet shielding cosmetic materials or the like having preparation form stability.