Ihara Chemical Industry Co., Ltd.

Hamamatsu-photonics K.k.

Shizuoka Prefectural Government

Kabushikikaisha Maruhachi Muramatsu

Nippon Light Metal Company, Ltd.

Toshihiro Suzuki

Chizu Komatsu

Toru Hirohata

Minoru Niigaki

Yoshihiko Mizushima

Masahiko Shioda

Yasushi Higuchi

Koichiro Oba

Kenichi Sugimoto

Hiroki Kawakami

Yutaka Ochiai

Tomoko Suzuki

Tsutomu Nakamura

Tadaoki Matsushita

Takane Yokoi

Mitsumasa Furukawa

Tsuneo Ihara

Harumoto Sawada

Noriyuki Muramatsu

Tatsuya Fujii

Masami Tamura

Masaaki Yokoyama

Tomoko Kitagawa

Youko Matsue

Masayuki Hashidume

Seiichi Hiratsuka

The present invention provides a method for extracting a lipid mixture having a high percentage of phospholipids comprising polyunsaturated fatty acids. The method comprises the steps of (a) heating the viscera of fish with hot water or steam; and (b) extracting from the heated viscera of fish, using a solvent, the lipid mixture containing phospholipids comprising polyunsaturated fatty acids. The lipid mixture obtained by the present method contains phosphatidylserine comprising docosahexaenoic acid and phosphatidylethanolamine comprising docosahexaenoic acid in high concentration.

Method for extracting lipid mixture containing phospholipids comprising polyunsaturated fatty acids from viscera of fish, method for preserving viscera prior to extraction, and lipid mixture extracted thereby

This invention aims at providing an X-ray apparatus having a stable X-ray output. Since the focus electrode of the X-ray tube of the X-ray apparatus according to this invention maintains a ground potential, the focus diameter of electrons bombarded against a target becomes constant. Hence, the X-ray output emerging from an exit window is stabilized. Since the potential ratio of a cathode to the target is always constant, the electric field distribution between the cathode and the target is stabilized, thereby stabilizing the X-ray output emerging from the exit window.

X-ray apparatus

A junction, such as a Schottky junction, is formed between a conductive electrode and a semiconductor. A bias voltage is applied between the conductive electrode and an outward-emission-side electrode formed on the semiconductor at the side opposite to the junction. Upon illumination, photoelectrons are internally emitted in the conductive electrode into the semiconductor, transported through the semiconductor, and emitted outward from the semiconductor surface, which has been so treated as to reduce the surface barrier height. The semiconductor is semi-insulating, or a p-n junction is formed therein.

Photoemitter

A process for producing a halobenzene represented by the formula: ##STR1## where R is a lower alkyl group, a lower alkoxy group or a halogen atom, and X is a halogen atom, which comprises halogenating a benzene represented by the formula: ##STR2## where R is as defined above, in a liquid phase in the presence of a catalyst, characterized in that the catalyst is a combination of an aliphatic carboxylic acid component and a zeolite having a SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of from 3 to 8 and a pore size of from 6 to 10 .ANG..

Process for producing a halobenzene

A process for producing a chlorohalobenzene represented by the general formula: ##STR1## where X' is a halogen atom, by chlorinating a benzene represented by the general formula: ##STR2## where X is a hydrogen atom or a halogen atom, in a liquid phase in the presence of a catalyst, characterized in that L-type zeolite is used as the catalyst.

Process for producing a chlorohalobenzene

A nuclear halide of a monoalkylbenzene is prepared by halogenating a monoalkylbenzene in the presence of an L-type zeolite catalyst.

Process for preparation of nuclear halides of monoalkylbenzenes

A process for producing a p-chlorobenzene having the formula: ##STR1## wherein R is a lower alkyl group, a lower alkoxy group or a halogen atom, which comprises chlorinating a benzene having the formula: ##STR2## wherein R is as defined above, in a liquid phase in the presence of a catalyst, characterized in that the catalyst is a combination of an aliphatic alcohol having the formula:

Process for producing p-chlorobenzenes

Growing community of inventors

Shizuoka, Japan

Toshihiro Suzuki