Agency of Industrial Science and Technology

National Institute of Advanced Industrial Science and Technology

Ngk Spark Plug Company, Limited

Japan As Represented by Director General Agency of Industrial Science

Tetsuya Kameyama

Yoshiyuki Yokogawa

Atsushi Hozumi

Fukue Nagata

Kaori Nishizawa

Masayuki Dokiya

Kenzo Fukuda

Harumi Yokokawa

Masao Fujishige

Masahiko Inagaki

Seiichi Ujiie

Koji Hyodo

Hiroshi Sumi

Chao-Nan Xu

Yukari Kawamoto

Takashi Yamane

Motoyuki Akamatsu

Kohji Okada

Kei Teraoka

Akihiro Motoe

Provided are a stress analysis method and stress analysis equipment that enable a detailed stress measurement, by using both a photoelasticity measurement method and a stress measurement (mechanoluminescence measurement) which utilizes a mechanoluminescent substance to measure a stress state of an object. Physical quantities that are measurable include individual principal stress component and a principal stress direction. The photoelasticity measurement method alone cannot measure individual principal stress component values.

Stress and strain analysis method and its equipment

This invention provides mesostructured oxide ceramics and a synthesizing method thereof, the synthesizing method employs a water-based solvent containing a metallic salt or metal complex as the ceramics precursor, template formed from an organic compound or the association thereof, and a precipitant, wherein mesostructured oxide ceramics are obtained from self-assembled oxide ceramics and organic substance by directly extracting oxide ceramics at a low temperature of 200&#xb0; C. or less by utilizing a homogenous precipitation reaction from said ceramics precursor under the coexistence of a nanometer-sized template in the solvent, and separating and collecting the obtained precipitation, and mesostructured oxide ceramics is prepared by employing the synthesizing method described above.

Mesostructured oxide ceramics and their synthesis method

A method of manufacturing hollow ceramics fibers with the pores of the micron-scale hollow structure unidirectionally oriented, the method of manufacturing is characterized in the steps of dispersing organic fibers in a dielectric liquid and applying high voltage to the dielectric liquid containing the dispersed organic fibers to electrostatically align them to produce a fiber accumulation in which the organic fibers are unidirectionally oriented, using the fiber accumulation as a mold and dipping the fiber accumulation in a ceramics base solution, and then removing the mold by treatment with heat or organic solvents.

Fabrication of hollow ceramics fibers using unidirectionally oriented organic fibers prearranged based on electrostatic means

The invention provides an artificial tooth root having acid resistance and anti-adherence of sordes and various germs, consisting of a substrate and a coating of calcium phosphate based ceramic having bioaffinity formed on the surface of this substrate, the substrate is composed of a polymer, ceramic, metal, or other material, the surface of the ceramic coating on the substrate surface is endowed with a protrusion-and-recession configuration, and is, chemically modified, and to a method for producing the artificial tooth root, by forming a coating of calcium phosphate based ceramic having bioaffinity over a substrate while imparting protrusions and recessions thereto, masking an area of the ceramic coating surface of which bioaffinity is required, and fixing a silane coupling agent exclusively over a predetermined area of the ceramic coating surface.

Artificial tooth root with anti-adherence of sordes and various germs, with acid resistance and its preparation method

The present invention provides a method for producing a calcium phosphate coating film on the surface of a substrate, even a substrate which has poor heat resistance. The method comprises the steps of soaking a substrate in a first solution containing phosphate ions, inter alia, aqueous solutions of a basic phosphate salt such as Na.sub.3 PO.sub.4 or Na.sub.2 HPO.sub.4 ; removing the substrate and drying it; and soaking the substrate in a second solution (aqueous solution) containing calcium ions, to thereby obtain a coating film comprising hydroxyapatite or a mixture containing hydroxyapatite and a hydroxyapatite precursor. The substrate removed from the second solution may be soaked in a third solution (aqueous solution) containing an apatite component at a substantially saturated or supersaturated concentration, to thereby form a hydroxyapatite coating film. There may be used substrates formed of metals, ceramics, organic polymer materials, etc. The method is applicable to a substrate having poor heat resistance, such as synthetic resin fabric, due to omission of high-temperature treatment.

Method for producing calcium phosphate coating film

The present invention provides a moulded object of alumina matter-containing raw material for aluminum smelting by a blast furnace method. The moulded object for aluminum smelting is formed by coating a moulded object comprising the alumina matter-containing raw material and a carbon material with carbon material coating layers on its surface.

Moulded object of alumina matter-containing raw material for aluminum

This invention provides a method of smelting aluminum by using a blast furnace. An oxygen gas is introduced into a carbon material packed in a reactor, to burn the same to form a plurality of raceways and a high-temperature reduction region among the raceways. A mixture containing an alumina-containing starting material and a carbon material is then supplied selectively into the high-temperature reduction region while substantially preventing the mixture from contacting the raceways, to reduce the alumina to aluminum.

Method of manufacturing aluminum by using blast furnace

Provided is a method for hydrogenating an aromatic compound by reacting the aromatic compound with hydrogen iodide in the presence of ruthenium catalyst.

Method for hydrogenating an aromatic compound

Growing community of inventors

Aichi, Japan

Tetsuya Kameyama