National Institute of Advanced Industrial Science and Technology

Agency of Industrial Science and Technology

Japan Vilene Company, Ltd.

Hirobumi Ushijima

Kazuhisa Murata

Kenichi Nomura

Jun Akedo

Masaaki Kawabe

Tetsuo Tsuchiya

Takeshi Kobayashi

Manabu Yoshida

Takashi Fukuda

Ken-ichi Fujita

Daisuke Barada

Muneyasu Suzuki

Nobuko Fukuda

Noriko Michihata

Kengo Noguchi

Noriko Iwase

Jun Young Kim

Kyoko Tsuji

Kaoru Tamada

Shun Hasegawa

Shusuke Kanazawa

Motoshi Itagaki

Disclosed is a highly dense aggregate of brittle material particles having an interface at which the particles are bonded to each other and pores between the brittle material particles structuring the highly dense aggregate, where a porosity which is a volume ratio of the pores with respect to the whole of the highly dense aggregate is equal to or less than 20%, and a volume ratio of the pores communicating with an apparent outer surface of the highly dense aggregate with respect to a volume of all of the pores of the highly dense aggregate is equal to or higher than 65%.

Highly dense brittle-material structural member having impregnating property

Provided is an air-permeable sheet () to be used in a state of being interposed between a suction stage () and an air-impermeable substrate () when printing is performed by a sheet-fed method on the surface of the substrate () fixed by suction to the suction stage (), the air-permeable sheet capable of printing a desired printing pattern on the surface of the substrate with high accuracy. The air-permeable sheet () includes a non-woven fabric layer () and a support layer () constituted by a woven fabric or knitted fabric.

Air-permeable sheet

The invention provides a process and an apparatus for producing a high quality electronic component by reducing sagging at pattern side walls, which may occur when patterns of a wiring, an electrode, etc. are printed by a screen printing process using an electroconductive paste, an insulation paste, or a semiconductor paste, and reducing a mesh mark on the patterns of a wiring, an electrode, etc., or a full solid surface film, as well as a pattern formation process, by which screen printing can be applied and double face printing can be conducted with the number of process steps less than a conventional process. A pattern is formed by that a pattern is printed on a blanket having a surface comprising polydimethylsiloxane using an electroconductive paste, an insulation paste, or a semiconductor paste by a screen printing process, and the pattern is transferred from the blanket to a printing object.

Method for forming pattern

There are provided a novel optical information recording material or medium excellent in various holographic optical information recording properties such as sensitivity, response speed, long-term storage stability, and repeatability, and a substance therefor. A photoresponsive heterocyclic azo compound contains an oligomer or polymer having a photoresponsive moiety in at least one of the main chain and side chain, and the photoresponsive moiety is a building block represented by the following formula (1): wherein HCand HCeach represent a ring structure, at least one of them being a heterocyclic structure containing 1 or more heteroatom in the ring, Rand Reach represent a hydrogen atom or a substituent connected to the ring structure and may be the same or different ones, s and t each represent the number thereof, and Xand Xeach represent a terminal group or a linking group, at least one of them being a linking group connected to the main chain of the oligomer or polymer and the terminal group being a hydrogen atom or a substituent.

Photoresponsive heterocyclic azo compound, method for producing the same, and optical information recording medium

Hydrogen is produced from a hydrocarbon by contacting the hydrocarbon with fine particles of a carbonaceous material having an external surface area of at least 1 m.sup.2 /g at a temperature sufficient to pyrolyze the hydrocarbon.

Process for producing hydrogen from hydrocarbon

A non-aromatic organic compound is converted into aromatic hydrocarbons by a process in which the non-aromatic organic compound is contacted with a diamond-like carbonaceous catalyst at a temperature of 200.degree.-1,500.degree. C. The catalyst is a carbonaceous material which does not show any peak at 2.theta. of about 25.degree. attributed to C(002) diffraction in a powder X-ray diffraction pattern thereof or which shows a peak at 2.theta. of about 25.degree. attributed to C(002) diffraction in a powder X-ray diffraction pattern thereof and has a C(002) interplanar spacing greater than 0.3440 nm.

Aromatization process

Growing community of inventors

Tsukuba, Japan

Hirobumi Ushijima