Kyushu University

Railway Technical Research Institute

International Superconductivity Technology Center, the Juridical Foundation

Swcc Showa Cable Systems Co., Ltd.

The Jurical Foundation

Fuji Xerox Office Supply Co., Ltd.

Junko Matsuda

Yuh Shiohara

Teruo Izumi

Kenji Suzuki

Yuji Aoki

Koichi Nakaoka

Masataka Iwakuma

Ryo Teranishi

Saburo Hoshi

Taiji Ohashi

Haruo Muramatsu

Kazuhide Suzuki

The present invention is configured such that, in a low AC loss oxide superconductor constituted by providing an oxide superconducting layeron a substrate, said oxide superconducting layeris separated into a plurality of filament conductorsin parallel to the lengthwise direction of said substrateby dividing groovesplurally formed in the widthwise direction of said substrate, and a high-resistance oxideis formed in said dividing grooves. Because of the invention, it is possible to increase the insulation properties of individually divided mated filament conductors, and to obtain an oxide superconductor that has low AC loss.

Low alternating-current loss oxide superconductor and fabricating method thereof

A production process of a thick-film tape-shaped RE-type (123) superconductor having a high critical current value. The production process has the steps of providing a composite substrate having GdZrOand CeOstacked in that order onto a Hastelloy substrate, coating a raw material solution prepared by dissolving a trifluoroacetate of Y and Ba and a naphthenate of Cu onto the composite substrate, heat treating the coated composite substrate by calcination, then subjecting the calcined assembly to intermediate heat-treatment at a temperature below the temperature of heat-treatment for superconductor production, and then heat treating the assembly in an argon gas atmosphere under conditions of highest heating temperature 760&#xb0; C., water vapor partial pressure 13.5%, and oxygen partial pressure 0.09% for superconductor production to produce a tape-shaped RE-type (123) superconductor having a YBCO superconducting film having a thickness of more than about 2 &#x3bc;m.

Process for producing thick-film tape-shaped re-type (123) superconductor

The disadvantages of conventional carton for packaging cut sheets of paper such as the facts that fingers or finger nails are injured upon opening the carton, tearing requires a large force, the removal of the cut sheets is difficult, the beauty of surroundings is spoiled, movement of the carton is required, and industrial wastes are produced are solved by the present invention. A pair of opening face cut lines such as threaded lines, zipper and the like are formed on two selected faces of the rectangular parellelepiped carton, and a trigger cut line such as a threaded line, zipper and the like is formed on this one face or another face. The trigger cut line is connected to the opening face cut lines. The trigger cut line and the opening face cut lines are torn off after cutting and raising a part of the trigger cut line. The face having the opening face cut lines is used as an opened face.

Carton for packaging cut sheets of paper

Growing community of inventors

Tokyo, Japan

Junko Matsuda