Hitachi, Ltd.

Hitachi Engineering Services Co., Ltd.

Kazuo Takei

Masahiro Kurihara

Yasuhiro Noguchi

Kageyoshi Katakura

Yasuhiko Sasaki

Kei Takenaka

Isao Yasuda

Hisao Saito

Yuusuke Watanabe

Hideki Nakamoto

Kenichi Kawabata

Shinichiro Umemura

Hiroshi Kuwahara

Hiroshi Masuzawa

Kunio Hashiba

Yutaka Wada

Yukio Funyu

Yukihiro Oda

Tunemasa Miyo

A method for accurately counting desired cells or microorganisms (viable bacteria) in a sample fluid in which contaminants are included is provided. One or plural types of membrane-permeable fluorochromes whose fluorescence amount is amplified by binding to a nucleic acid and glycerin are added to a sample fluid containing cells or microorganisms to be counted and allowed to stand for a certain time. Glycerin is added before or after or simultaneously with the mixing of the sample fluid and the fluorochrome(s). The cells or microorganisms to be counted are counted by staining the cells or microorganisms to be counted, followed by irradiating with light having a specific wavelength to detect the fluorescence emitted from the cells or microorganisms.

Method for testing microorganism or the like and testing apparatus therefor

Provided are a microorganism testing chip capable of suppressing self-fluorescence and enhancing mass productivity, and a microorganism testing device using the same. The microorganism testing chip includes a main body and a fungus body detection unit mounted on the main body. The main body has a detection window frame portion which is a through-hole or a pass-through groove. The fungus body detection unit is disposed to cover the detection window frame portion and has a fungus body detection flow path connected to flow paths provided in the main body. The fungus body detection unit includes a cover member and a flow path member, and is formed by attaching these two members to each other. The flow path member has a groove. By attaching the two members to each other, the groove of the flow path member serves as the fungus body detection flow path.

Microorganism testing device and microorganism testing chip

Embodiments of the invention provide a water treatment method and water treatment device capable of automatically tracking the frequency of ultrasonic waves and automatically controlling their amplitude such that optimal cavitation is generated. In one embodiment, a water treatment method of sterilizing water containing microbes comprises supplying ultrasonic vibration to the water to be treated by driving and controlling a transducer of a sterilization cell using a signal; detecting an amplitude of the transducer and a frequency of the signal applied to the transducer; and controlling the amplitude and a vibration frequency of the transducer to target values in accordance with the detected transducer amplitude and the detected signal frequency.

Water treatment method and water treatment device

A method and apparatus for sterilizing water containing pathogen protozoa having shells in a simple manner without negative influencing the environment is disclosed. Ultrasonic waves are applied to drinking water to form fine cavitation bubbles which are used to destroy the shells of pathogenic protozoa. The residual chlorine in the drinking water along with an oxidizing action and effect of the ultrasonic wave, permit not only sterilization but also deodorization and decolorization.

Sterilizing method and apparatus

Each of formula constituent elements represented in real mathematical notation is written by a user via an input device on a display screen. While confirming positions of graphic elements indicative of each of the respective inputted constituent elements with respect to the display screen, the user forms a desired formula. On the basis of types of the inputted constituent elements and their positions on the display screen, an arithmetic relationship between the formula constituent elements is automatically obtained by a computer. A computer program to solve this formula is automatically produced by the computer based on the resultant arithmetic relationship. The solutions of the formula are displayed on the display screen as numeral values and graphic representations.

Method and apparatus for preparing a document containing information in

A display apparatus automatically rounds corners of a rectangular area frame for display thereof, the rectangular area frame including that of a window or that of a graph and the like displayed within the window. The rounding is effected by automatically calculating and displaying circular arcs (ellipstic arcs) of corners based on the inputted corner coordinates of the rectangular area frame, or by not displaying one or several dots of each corner. In the case where multi-windows are displayed in an overlap manner or a plurality of rectangular area frames are displayed within a window, the corners are not displayed stiffly and emphasized unnecessarily, thus providing a visually soft and natural display image, improving the quality of displayed images, and providing an improved handy method for use by an operator. In a document editing apparatus, the corners of a rectangular frame of a window or of a rectangular area for display of graphs or the like in the window are visually recognized as being round, whereas the corners of a hard copy are formed with original right angles.

Display apparatus and method with multi-window function

An operator activates a document editing program or editing document data including character strings, graphics and image data with the aid of an input device and a display. In the course of edition of the document data by the operator, application programs are activated. The operator can write the characters, graphics and others into the document data being edited by making use of the application programs.

Document editing apparatus which activates application programs in

Growing community of inventors

Tokai, Japan

Kazuo Takei