Kabushiki Kaisha Toshiba

Mitsubishi Chemical Corporation

Nec Network and Sensor Systems, Ltd.

Co. Ltd. Rsc

Yuusuke Watanabe

Jun Suzuki

Hajime Mori

Kunihiko Kinugasa

Noboru Saito

Shigeru Kasai

Tsuyoshi Hagiwara

Takeshi Maehara

Masanobu Watanabe

Yasuo Morishima

Akihiro Itou

Teruo Hashimoto

Kiyofumi Saiki

Ken Okuda

Yoshiki Ishizaki

Hideshi Iwasa

Takaya Shinmura

Takaaki Kishimoto

(A) An individual one of two or more terminals prepares a set of a first public key and a first private key. (B) One of the two or more terminals creates a set of a second public key and a second private key and distributes the second public key and the second private key to the other terminal(s). (C) One of the two or more terminals creates a shared key by using the corresponding first private key prepared in the (A) and the second public key shared in the (B). (D) A different terminal(s) of the two or more terminals creates a shared key used to communicate with the one terminal by using the second private key shared in the (B) and the first public key of the one terminal prepared in the (A). (E) The set of terminals performs an encryption communication(s) by using the shared keys.

Encryption communication method, information processing apparatus, and program

Provided is a neutron shielding material having excellent transparency and high neutron shielding ability. In this neutron shielding material, light transmittance at wave length of 400 to 700 nm is 80% or greater, and the thickness of a 1/10 value layer of a neutron generated from Californium 252 is 14 cm or less.

Transparent neutron shielding material

A jet pump including a riser as a coolant supply tube, an inlet mixer forming a turn-around path for the coolant, a diffuser, and a jet pump beam provided with a bolt fixing device is disclosed. The bolt fixing device includes: a head bolt of a jet pump beam for pushing and supporting the inlet mixer from an upper side of the riser, the head bolt being provided with a polygonal head portion; a lock cap provided on the polygonal head portion of the head bolt; a body housing disposed on an upper surface of the jet pump beam and adapted to accommodate the lock pin; a plurality of tapered external teeth formed on an outer peripheral side surface of the lock cap; and a plurality of internal tooth-shaped grooves formed to the body housing to fix the head bolt of the jet pump beam.

Bolt fixing device of jet pump beam

A reactor metering pipe fixing device fixes a reactor metering pipe disposed in a reactor to a cylindrical outer surface of a jet pump diffuser and reduces stress that may be induced in a weld zone in the reactor metering pipe. An outer holding memberis held on the cylindrical outer surfaceof a jet pump diffuserby a C-shaped holding member. The reactor metering pipeis clamped from radial directions by the outer holding memberand inner holding membersand. Wedgesandare wedged into a gap between the cylindrical outer surfaceand the inner holding memberand a gap between the cylindrical outer surfaceand the inner holding memberto fix the reactor metering pipefirmly to the cylindrical outer surface

Device and method for fixing a reactor metering pipe

Growing community of inventors

Tokyo, Japan

Yuusuke Watanabe