Abstract: An impact rotary tool includes a driver, a drive shaft, a hammer, an anvil, a travel distance measuring device, and a torque estimator. The driver is configured to perform a turning operation. The travel distance measuring device is configured to measure a parameter relating to a hammer travel distance through which on application of impact to the anvil by the hammer, the hammer moves away from the anvil along an axial direction from a location of the application of the impact to the anvil by the hammer. The torque estimator is configured to estimate, based on at least the parameter relating to the hammer travel distance, a torque value generated by the impact.

Abstract: In a case where a tool holder 5 having a plurality of cutting tools T are attachably/detachably mounted on a base member 8, the tool holder 5 is formed in a ring shape and has depressions 5a and projections 5b on an inner periphery, and by aligning the depressions and projections 5a, 5b of the tool holder 5 with projections 9b and depressions 9a formed on an outer periphery of a rotating member 9 rotatably mounted on the base member 8, the tool holder 5 is mountable to or removal from the base member 8. The tool holder 5 is clamped to the base member 8 by being pressed against a seating surface 8e of the base member 8.

Abstract: Provided is a temperature control apparatus of a working machine that is inexpensive, energy-saving and capable of eliminating the temperature difference between a temperature in a room in which the working machine is installed and a temperature of a working area.

Abstract: In a case where a tool holder 5 having a plurality of cutting tools T are attachably/detachably mounted on a base member 8, the tool holder 5 is formed in a ring shape and has depressions 5a and projections 5b on an inner periphery, and by aligning the depressions and projections 5a, 5b of the tool holder 5 with projections 9b and depressions 9a formed on an outer periphery of a rotating member 9 rotatably mounted on the base member 8, the tool holder 5 is mountable to or removal from the base member 8. The tool holder 5 is clamped to the base member 8 by being pressed against a seating surface 8e of the base member 8.

Abstract: There is provided a catalyst for producing ethylene oxide from ethylene which is composed of at least silver (Ag), cesium (Cs), rhenium (Re) and a carrier, and can be improved, in particular, in selectivity. The present invention relates to a catalyst for producing ethylene oxide from ethylene, comprising at least silver (Ag), cesium (Cs), rhenium (Re) and a carrier, said catalyst being produced by optionally pretreating the carrier to support an alkali metal thereon and then supporting Ag, Cs and Re on the carrier, wherein the carrier has a specific surface area of 0.6 to 3.0 m2/g and a weight ratio of a silicon (Si) content to a sodium (Na) content of 2 to 50 in terms of SiO2/Na2O; a content of Re in the catalyst is 170 to 600 ppm per 1 m2/g of the specific surface area of the carrier on the basis of a weight of the carrier; and a molar ratio of Cs to Re in the catalyst is 0.3 to 19.

Abstract: There is provided a catalyst for producing ethylene oxide from ethylene which is composed of at least silver (Ag), cesium (Cs), rhenium (Re) and a carrier, and can be improved, in particular, in selectivity. The present invention relates to a catalyst for producing ethylene oxide from ethylene, comprising at least silver (Ag), cesium (Cs), rhenium (Re) and a carrier, said catalyst being produced by optionally pretreating the carrier to support an alkali metal thereon and then supporting Ag, Cs and Re on the carrier, wherein the carrier has a specific surface area of 0.6 to 3.0 m2/g and a weight ratio of a silicon (Si) content to a sodium (Na) content of 2 to 50 in terms of SiO2/Na2O; a content of Re in the catalyst is 170 to 600 ppm per 1 m2/g of the specific surface area of the carrier on the basis of a weight of the carrier; and a molar ratio of Cs to Re in the catalyst is 0.3 to 19.

Abstract: Disclosed is a metal-metal oxide composite material for dental prosthesis, which has a white surface with good aesthetic quality and includes a titanium or titanium alloy substrate; and an oxidation layer present on a surface of the substrate. The metal-metal oxide composite material is manufactured by subjecting the substrate to a heat treatment at a temperature of around 1000° C. in an oxygen-containing atmosphere to form the oxidation layer on the surface of the substrate with good adhesion.

Abstract: Provided is a temperature control apparatus of a working machine that is inexpensive, energy-saving and capable of eliminating the temperature difference between a temperature in a room in which the working machine is installed and a temperature of a working area. Whether an average value T5 is higher or lower than both a target temperature T1 in the working area and an air temperature T2 in the room is checked and, if the result is YES, the routine proceeds to step S8 for driving a cylinder 175 to open a cover 173 and open a opening for working 172. Then, internal air in a working area A is replaced with external air surrounding a numerically controlled lathe 1 and the temperature in the working area approaches the air temperature T2 in the room. If the result is NO, the cylinder 175 is driven to close the cover 173 and close the opening for working 172.

Abstract: Disclosed is a catalyst for ethylene oxide production which is used for producing ethylene oxide from ethylene. This catalyst is composed of at least silver (Ag), caesium (Cs), rhenium (Re) and a carrier, and improved especially in selectivity. Specifically disclosed is a catalyst for ethylene oxide production, which is used for producing ethylene oxide from ethylene and composed of at least silver (Ag), caesium (Cs), rhenium (Re) and a carrier. If necessary, an alkali metal is loaded onto the carrier as a pretreatment, and then Ag, Cs and Re are loaded onto the carrier, thereby obtaining the catalyst. The carrier has a specific surface area of 0.6-3.0 m2/g, and a weight ratio between the silicon (Si) content and the sodium (Na) content in terms of SiO2/Na2O of 2-50, The Re content (based the carrier) is 170-600 ppm per 1 m2/g or the specific surface area of the carrier, and the molar ratio Cs/Re is 0.3-19.