Abstract: The invention provides a process for producing 3-hydroxybutyric acid or a salt thereof, the process comprising culturing one or more halophilic bacteria belonging to the genus Halomonas under specific conditions.

Abstract: The invention provides a process for producing 3-hydroxybutyric acid or a salt thereof, the process comprising culturing one or more halophilic bacteria belonging to the genus Halomonas under specific conditions.

Abstract: This invention provides a method for producing calcite-type calcium carbonate single crystal available for optical elements, which can be carried out under relatively low temperature and low pressure conditions. The crystal growth process which comprises; a first step of filling a sealed pressure container of an autoclave with solvent and calcium carbonate as a raw material for growth, a second step of dissolving the starting rate in the solvent under predetermined conditions of pressure and temperature, a third step of crystallizing the calcium carbonate on a seed crystal suspended in the upper portion of the pressure container, on account of the difference of solubility caused by temperature gradient in the container; the method is characterized by that the aqueous solution of ammonium salt of mono-carboxylic acid is used as the solvent.

Abstract: A monoclonal antibody specifically recognizing N-terminal portion of human calcitonin (hCT), a hybridoma producing said monoclonal antibody, a process for preparing said monoclonal antibody, and a method for detecting hCT which comprises the use of said monoclonal antibody are provided.The above monoclonal antibody permits detection of hCT with high sensitivity.

Abstract: Powder is filled in an axially elongate powder filling space defiined in a flexible pressure tube, and the pressure-bearing surface of the flexible pressure tube is pressurized with a pressurizing fluid, from a wall portion of the pressure tube which corresponds to a localized region of the powder filling space progressively toward another wall portion of the pressure tube which corresponds to an end of the powder filling space, until the pressure-bearing surface of the pressure tube is pressurized in its entirety, thereby compacting the powder in the powder filling space. Therefore, air in the powder is progressively squeezed toward the end of the powder filling space where the air can be discharged. Thus, no air remains trapped in the powder, and a formed product is prevented from being damaged, which enables elongate products to be produced.

Abstract: Powder is filled in an axially elongate powder filling space defined in a flexible pressure tube, and the pressure-bearing surface of the flexible pressure tube is pressurized with a pressurizing fluid, from a wall portion of the pressure tube which corresponds to a localized region of the powder filling space progressively toward another wall portion of the pressure tube which corresponds to an end of the powder filling space, until the pressure-bearing surface of the pressure tube is pressurized in its entirety, thereby compacting the powder in the powder filling space. Therefore, air in the powder is progressively squeezed toward the end of the powder filling space where the air can be discharged. Thus, no air remains trapped in the powder, and a formed product is prevented from being damaged, which enables elongate products to be produced.