The present invention relates to a method of making a cemented carbide with submicron grin WO grain size consisting of WO, 6-12 wt-% Co and 0.1-0.7 wt-% Cr using conventional powder metallurgical technique mixing, pressing and sintering. According to the method the WC-grains are coated with Cr prior to mixing. As a result a cemented carbide with improved properties is obtained.

PROBLEM TO BE SOLVED: To provide a formula feed for pisciculture, enabling production of cultured fishes quickly growing and having good meat quality and being reduced in production cost, thereby reducing the cost of cultured fishes, by using extremely inexpensive regenerated vegetable oil obtained by regenerating a waste vegetable oil. SOLUTION: This invention provides a formula feed for piscicul...

PROBLEM TO BE SOLVED: To obtain an aqueous solution containing an alkali phosphatase or its derivative, which is stably preservable for a long period of time. SOLUTION: This method for alkali phosphatase stabilization comprises adding bile acid or conjugated bile acid to an aqueous solution containing an alkali phosphatase or its derivative, and a composition obtained by the method.

PROBLEM TO BE SOLVED: To provide a nail polishing sheet which can instantly and easily polish up nails to make them look glossy without making one's fingers dirty. SOLUTION: This nail polishing sheet includes a polish layer on the base cloth. The polish layer is made by applying a polish composition containing a polish abrasive and grease on the base cloth.

PROBLEM TO BE SOLVED: To provide a coverlet which prevents a coverlet body from inflating unnaturally and makes a user hardly feel odd or uncomfortable even when the coverlet is provided with function materials like, for example, fragrance bags. SOLUTION: The coverlet has a perfume cushion 3 attachable and detachable to and from the coverlet body. The coverlet body has a cushion housing section fo...

PROBLEM TO BE SOLVED: To provide a carpet which is naturally decomposed and annihilated by itself under the ground when subjected to landfill disposal, does not evolve toxic gases when subjected to incineration disposal and is easily disposable because of low combustion heat, etc. SOLUTION: Fiber made from polylactic acid resin are used for pile yarn 1, yarn such as ground yarn, and fabrics such a...

PROBLEM TO BE SOLVED: To provide a phase contrast X-ray imaging device capable of observing a wide visual field at once, and superior in spatial resolution even in either direction in a visual field range. SOLUTION: This phase contrast X-ray imaging device has an X-ray source 1, a monochromatic unit group 46 for expanding a beam width of a beam from the X-ray source 1 in the orthogonal two directi...

PROBLEM TO BE SOLVED: To provide a method for treating gas capable of safely and efficiently removing a boric acid ingredient from a gas containing the boric acid ingredient by utilizing an existing bag filter or an electrical dust precipitator. SOLUTION: The gas treatment method is characterized by adding solid alkali metal carbonates to the gas containing 15 mg/m<3> or more of the boric acid ing...

PROBLEM TO BE SOLVED: To provide an inorganic separation membrane that can remove e.g. a polymer having a fractionation molecular weight of 100-10,000 and dissolved in a solvent at a high separation accuracy and has a high solvent permeation rate, to provide a method for producing the same, and to provide an ultrafiltration membrane. SOLUTION: The inorganic separation membrane is characterized in ...

PROBLEM TO BE SOLVED: To form a working oil distributing passage capable of miniaturizing a continuously variable transmission with V-belt while securing a necessary width of speed change and providing a high supporting rigidity of pulley shaft. SOLUTION: Oil passages 26 and 45 stretching in the central parts of an input shaft 20 and a primary pulley shaft 41 constitute a first working oil distrib...

PCT No. PCT/FR91/00953 Sec. 371 Date Sep. 11, 1992 Sec. 102(e) Date Sep. 11, 1992 PCT Filed Nov. 29, 1991 PCT Pub. No. WO92/09691 PCT Pub. Date Jun. 11, 1992.Variants of type I interferons containing peptide extensions, and their production using recombinant DNA techniques, are described. Expression cassettes comprising DNA coding for the variant interferon, DNA coding for a signal peptide, and a ...

PURPOSE:To obtain a lead-acid battery which can improve the utilizing rate of an active material, and has an excellent capacity, by providing an electrode plate including a fiber form lead oxide in an active material, and making the adding amount of the lead oxide 0.5 to 5.0 mass%, and the mean length of the lead oxide in the scope 50mum to 40mum. CONSTITUTION:A solution or a dispersion liquid of ...

PURPOSE:To extend the life of a battery by using an alloy-expanded grid for a positive electrode. CONSTITUTION:Lead alloy containing 0.05-0.09% calcium, 0.06-1.80% tin and 0.005-0.05% bismuth is cold rolled into a sheet and then expanded to form a grid for at least a positive electrode, so that the life of a lead acid battery is improved. With the addition of bismuth, the oxidation resistance of t...

A complete system (200) for the purchasing of goods or information over a computer network (67) is presented. Merchant computers (63,64) on the network (67) maintain databases of digital advertisements (65,66) that are accessed by buyer computers (61,62). In response to user inquiries, buyer computers (61,62) retrieve and display advertisements from merchant computers (63, 64). A digital advertise...

This invention is directed to a method and system for extracting a solute from a fluid or a dense gas using a porous membrane. The invention includes providing a porous membrane having opposite sides in a module under pressure, with the membrane serving as a barrier interface between a fluid and a dense gas. The dense gas is introduced into the module on one side of the membrane and the fluid is i...

A device for exercising the tendons and muscles affected by tennis elbow takes the preferred form of a closed band of elastic material of sufficient circumference to fit around the fingers and thumb of the hand. On the band are four finger loops and one thumb loop. The wearer repeatedly extends the fingers and thumb against the tension of the elastic band and then retracts them. This exercising of...

The invention relates to a process for the powder metallurgical production of objects from tool steel as well as to such an object. The quality of the material, in particular its homogeneity, its degree of purity, and the properties of the same is/are increased by using the process according to:the invention, in which a melt is placed in a metallurgical vessel and conditioned therein, whereupon a ...

A thermosetting plastic foam solid formed from the reaction product of: (a) either polyisocyanate or isocyanate-based foam; (b) a polyol-based foam; (c) a catalyst which is capable of promoting the thermosetting reaction between the polyisocyanate or isocyanate-based foam and the polyol-based foam; and (d) a blowing agent which comprises a high purity cyclopentane product, wherein the high purity ...

The polyester composition for films includes, based on 100 parts by weight of a polyester resin, 0.01 to 5 parts by weight of aluminum silicate particles containing aluminum and silica as principal components and an alkali metal. To provide polyester films suitable for magnetic recording media, the polymer composition contains surface- modified aluminum silicate particles and two additional partic...

This invention provides a particulate composite comprising a polyester resin, a plasticizer, and a plurality of cenospheres. The polyester resin and the plasticizer form a matrix wherein the cenospsheres are distributed nonhomogeneously in the matrix. The nonhomogenous distribution of cenospheres further comprises a continuously varying particle volume fraction along a single dimension.