Ngk Insulators, Inc.

Sanwa Kagaku Kenkyusho Co., Ltd.

Masahiro Shirai

Tomonori Takahashi

Yukihito Ichikawa

Takahiro Kondo

Go Suzuki

Takuji Kakigami

Kiminari Kato

Tadashi Otagiri

Suguru Kodama

Makoto Miyazaki

Mitsuru Oka

Yuji Hayashi

Yasushi Uchida

Masahiro Yoshida

Mitsuaki Takeuchi

Nobuaki Takahashi

Motohiro Takeda

Mitsuhiro Makino

Minoru Ohara

Noriyasu Katoh

Takayo Murase

Masao Sakairi

Toru Murase

Takayo Yamamoto

In the present invention, a honeycomb structure includes a joined honeycomb segment body in which a plurality of honeycomb segments are integrally joined by mutual joining surfaces via a joining material layer, and has a configuration in which a plurality of cells to become through channels of a fluid are arranged in parallel with one another along a central axis direction. The joining material layer contains, as aggregates, inorganic particles, and acicular crystal particles having a shot content ratio smaller than 10 mass %, and the acicular crystal particles include 80 mass % or more of acicular crystal particles having an average length of 20 to 500 &#x3bc;m in a long axis direction of the acicular crystal particles. As the inorganic particles, silicon carbide, cordierite, alumina, zirconia, yttria or the like can be used, and as natural acicular minerals, sepiolite, wollastonite, palygorskite or the like can be used.

Honeycomb structure

A dipeptidyl peptidase IV inhibitor which is satisfactory in respect of activity, stability and safety and has an excellent action as a pharmaceutical agent. A compound represented by the following general formula or a pharmaceutically acceptable salt thereof: wherein Rand Reach represents hydrogen, an optionally substituted C1-6 alkyl group, or &#x2014;COORwhereupon Rrepresents hydrogen or an optionally substituted C1-6 alkyl group, or R, R, and a carbon atom together represent a 3- to 6-membered cycloalkyl group, Rrepresents hydrogen or an optionally substituted C6-10 aryl group, Rrepresents a hydrogen or a cyano group, D represents &#x2014;CONR-, &#x2014;CO&#x2014; or &#x2014;NRCO&#x2014;, Rrepresents hydrogen or an optionally substituted C1-6 alkyl group, E represents &#x2014;(CH)&#x2014; whereupon m is 1 to 3, &#x2014;CHOCH&#x2014;, or &#x2014;SCH&#x2014;, n is 0 to 3, and A represents an optionally substituted bicyclic heterocyclic group or bicyclic hydrocarbon group.

Compound inhibiting dipeptidyl peptidase IV

Ceramic honeycomb structure

A ceramic green sheet comprises a green sheet as a core and a surface layer formed thereon. Such ceramic green sheets are laminated for use in IC package, printed circuit board or the like.

Ceramic green sheets

A forming aid to be mixed in a ceramic material for forming the ceramic material into a formed ceramic body of a desired shape, including at least one of a thermoplastic resin and a wax, and a mineral oil in an amount of 30-95% by volume with respect to an entire volume of the aid. Also disclosed is a process of producing a ceramic article from the formed ceramic body containing the aid.

Forming aids for ceramic materials, ceramic bodies formed by using the

A silicon nitride sintered body having high oxidation resistance and high-temperature strength is produced by starting from silicon nitride powder adjusted so as to have an oxygen content of 4.5-7.5 wt % as converted into SiO.sub.2. The sintered body has a molar ratio of metal ion (M) to oxygen ion (O) within a range of M:O=1.2.about.1:3 and contains no crystal of YSiO.sub.2 N form.

Silicon nitride sintered bodies and a method of producing the same

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Nagoya, Japan

Masahiro Shirai