摘要:
A laminated composite includes a layer of monolithic ceramics and a layer of fiber-reinforced ceramics. The layer of fiber-reinforced ceramics is placed on the layer of SiC ceramics. The layer of SiC ceramics is made of a densely sintered body of SiC. The layer of fiber-reinforced ceramics is made of SiC-matrix ceramics reinforced by continuous SiC fiber.
摘要:
A purifier for nuclear reactor cooling water, which contains, as an active ingredient,a titanium oxide-based solid solution of the formula (1)(Ti.sub.1-x Al.sub.x)O.sub.2 (1) wherein x is defined by 0
摘要:
Fibrous hydrotalcites having a hexagonal needle-like crystal structure. The fibrous hydrotalcites are produced by contacting a basic magnesium compound having a needle-like crystal structure and expressed by the following formula (2)Mg(OH).sub.2-n'x.sbsb.2 A.sub.x.sbsb.2.sup.n'.spsp.-.m.sub.2 H.sub.2 O (2)wherein A.sup.n'.spsp.- represents a monovalent or divalent anion, n' is 1 or 2, and x.sub.2 and m.sub.2 are numbers satisfying the following conditions,0.2.ltoreq.x.sub.2 .ltoreq.0.5,O.ltoreq.m.sub.2 .ltoreq.2,with a compound capable of providing a trivalent metal cation and being soluble in a liquid reaction medium which is chemically inert and is a non-solvent for the basic magnesium compound, the contacting being carried out in said liquid reaction medium under conditions which do not cause a loss of the needle-like crystal form of the basic magnesium compound, while maintaining the ratio of M.sup.3+ to the sum of Mg and M.sup.3+ at O
摘要:
Fibrous magnesium hydroxide having a hexagonal needle-like crystal structure. The fibrous magnesium hydroxide can be produced by drying a basic magnesium compound having a needle like crystal structure expressed by the following formulaMg(OH).sub.2-nx.A.sub.x.sup.n-.mH.sub.2 Owherein n is 1 or 2, A.sup.n- represents a monovalent or divalent anion, x is 0.2.ltoreq.x.ltoreq.0.5, and m is O
摘要:
A device for removal of excess water from blood is formed by having a plurality of solution chambers and a plurality of blood chambers arranged alternately, partitioning the adjoining ones of the alternately disposed chambers by insertion of semi-permeable membranes one each along the boundaries thereof and having a sorbent retained in the form of a bed inside the blood chambers, whereby the blood containing waste material and excess water in consequence of renal insufficiency is freed from such fouling substances by causing the blood to flow through the blood chambers in order for the beds of sorbent to deprive the blood of the waste material through sorption and for the high concentration solutions flowing through the adjoining solution chambers to deprive the blood of the excess water through osmosis effected through the medium of the semi-permeable membranes.
摘要:
A novel magnesium hydroxide of the formula Mg(OH).sub.2 having (i) a strain in the direction of not more than 3.0 .times. 10.sup.-3, (ii) a crystallite size in the direction of more than 800 A, and (iii) a specific surface area of less than 20 m.sup.2 /g. The magnesium hydroxide, if desired as coated with anionic surfactants, is useful, for example, as fire retardants for thermoplastic synthetic resins and aqueous paints. The novel magnesium hydroxide is prepared by heating in an aqueous medium at an elevated pressure a novel basic magnesium chloride or nitrate of this invention expressed by the formula Mg(OH).sub.2-x A.sub.x .sup.. mH.sub.2 O wherein A is Cl or NO.sub.3, x is a number of more than 0 but less than 0.2, and m is a number of 0 to 6.
摘要:
A compound having a composition of the following formula:Mg.sub.x Al.sub.v (OH).sub.2x.sub.+3y.sub.-z (A).sub.z. aROHwherein A is a member selected from the group consisting ofA. a mono- or bivalent anion of a central nervous system medicament having a functional group selected from the class consisting of carboxyl, hydroxy and sulfonic groups, andB. a combination of said mono- or bivalent anions of a central nervous system medicament and not more than 50 mol %, based on the total anions, of an ion selected from the group consisting of halogen, nitrate, carbonate and sulfate ions,R is a member of the group consisting of hydrogen and ethyl, and x, y, z and a are each a positive number satisfying the following relationships:1/4 .ltoreq. x/y .ltoreq. 8AndAnd a process for the preparation of said compounds.
摘要:
When a solid reduction catalyst prepared by calcining and reducing at 350.degree. to 700.degree.C. in a hydrogen stream a precursor compound having a composition expressed by the following formulaM.sub.x Ni.sub.y Al.sub.z (OH).sub.2x.sub.+2y.sub.+ex.sub.-tp (A).sub.p.sup.. aH.sub.2 Oand having a layer lattice crystal structure characterized by the following X-ray diffraction patternd (A) I/Io ______________________________________ 7.5-210.2 100 3.6-10.6 5 - 80 2.4-6.4 5 - 60 ______________________________________ Is employed for hydrogenation reduction of unsaturated organic compounds, the intended reduction products can be obtained at very high conversion and very high selectivity.
摘要:
An inspection apparatus includes an insulating substrate, a socket in which a body portion having a through-hole in a wall thereof is integrally formed with a connection portion secured to the insulating substrate, and a contact probe detachably secured to the socket.
摘要:
Disclosed is a beverage extraction filter that can extract in a plurality of extraction machine types. The beverage extraction filter comprises a filter unit (40) where coffee powder is housed and a planar lid unit (41) mounted to the top section of the filter unit (40). The lid unit (41) is formed in a layer structure created by a non-permeable first sheet member (42) positioned on the filter unit side (40) and a permeable second sheet member (43) layered on top of the first sheet member (42), and a hole section (42a) through which hot water is made to pass is formed in the center of the first sheet member (42).