Abstract: A water treatment agent containing (a) an inorganic flocculating agent, (b) a polymeric flocculating agent, and (c) a non-swellable aluminosilicate compound with a volume swelling ratio of 120% or less is described. The volume swelling ratio of the component (c) is determined by the following formula: volume swelling ratio (%)=(L1/L2)×100, where L1 represents a volume of the component (c) 24 hours after adding 0.5 g of the component (c) to 50 ml of ion exchange water at 25° C., and L2 represents an apparent volume of 0.5 g of the component (c) in the air.

Abstract: The present invention is a water treatment agent containing (a) a polyalkylene oxide with a weight average molecular weight of 500,000 or more and (b) an inorganic flocculating agent.

Abstract: The present invention is a water treatment agent containing (a) a polymeric flocculating agent, (b) an inorganic flocculating agent and (c) a surfactant, wherein the water treatment agent contains (c) in an amount of more than 50 parts by mass and 10,000 parts by mass or less relative to 1,000 parts by mass of (b).

Abstract: The method for calculating concentration ratio includes: (a) heating a gas sensor element to a temperature at which both of two gas components introduced in a gas sensor element react, and maintaining the temperature for a predetermined period to measure an electrical resistance value of the gas sensor element; (b) heating the gas sensor element to a temperature at which only any of the two gas components reacts, and maintaining the temperature for a predetermined period to measure an electrical resistance value of the gas sensor element; and (c) calculating a concentration ratio of the two gas components based on a combination of the electrical resistance value in (a) and the electrical resistance value in (b).

Abstract: The method for calculating concentration ratio includes: (a) heating a gas sensor element to a temperature at which both of two gas components introduced in a gas sensor element react, and maintaining the temperature for a predetermined period to measure an electrical resistance value of the gas sensor element; (b) heating the gas sensor element to a temperature at which only any of the two gas components reacts, and maintaining the temperature for a predetermined period to measure an electrical resistance value of the gas sensor element; and (c) calculating a concentration ratio of the two gas components based on a combination of the electrical resistance value in (a) and the electrical resistance value in (b).

Abstract: A transformer includes a stacked structure in which a plurality of coils is stacked through insulation layers. The stacked structure includes: a primary coil stacked layer including a plurality of primary coil layers connected in parallel with one another; and a secondary coil stacked layer including a plurality of secondary coil layers connected in parallel with one another. One of the primary coil layers is disposed as an outermost layer in the stacked structure, and another is disposed between at least two layers of the plurality of secondary coil layers. The primary coil layer includes a plurality of primary coils connected in parallel with one another. The secondary coil layer includes one or more secondary coils thicker than the primary coil.

Abstract: To provide a toner, which contains silica particles containing first silica particles, and second silica particles, wherein the toner is a toner produced by depositing the silica particles on surfaces of base particles, the first silica particles have an average primary particle diameter of 75 nm to 250 nm, the second silica particles have an average primary particle diameter of 10 nm to 50 nm, a mass ratio of the first silica particles to the base particles is 0.010 to 0.040, a mass ratio of the second silica particles to the base particles is 0.005 to 0.030, a liberation ratio of the silica particles from the toner by a ultrasonic vibration method is 5% by mass to 20% by mass, and an amount of particles having primary particle diameters of 30 nm or smaller in the silica particles librated from the toner by the ultrasonic vibration method is 20% by number or less.

Abstract: Provided is an electrostatic charge image developing toner, including: toner base particles including a polyester resin as a binder resin; and an external additive on the surface of the toner base particles. The external additive includes silica. The silica is produced by sol-gel method, and is aspherical. The percentage of change in the specific surface area of the toner when it is stored under high-temperature, high-humidity conditions is from 25% to 45%.

Abstract: A toner housing container includes: a container body housing a toner; a conveying portion; a pipe receiving port; and an uplifting portion. Flow rate index of the toner measured by powder rheometer and represented by “flow rate index=(total energy at a rotation speed of 10 mm/s)/(total energy at a rotation speed of 100 mm/s)” is in a range of “1.8?flow rate index?6.5”. Container body includes protruding portion protruding from container body interior side of container opening portion toward one end of container body. Uplifting portion includes: uplifting wall surface extending from container body internal wall surface toward protruding portion; and curving portion curving to conform to protruding portion. When the toner housing container is mounted on the toner conveying device, the protruding portion is present between the curving portion and the toner receiving port of the conveying pipe being inserted.

Abstract: Toner housing container includes: container body mountable on toner conveying device and housing toner supplied into toner conveying device; conveying portion provided in container body and conveying toner from longer direction one end of container body to other end at which container opening portion is provided; pipe receiving port provided at container opening portion and receiving conveying pipe fixed to toner conveying device; and uplifting portion to move toner conveyed by conveying portion toward toner receiving port of conveying pipe. Toner has loose apparent density of 0.28 g/cm3 to 0.53 g/cm3. Container body includes protruding portion protruding from container body interior side of container opening portion toward one end. Uplifting portion includes uplifting wall surface extending from internal wall surface of container body toward protruding portion, and curving portion curving to conform to protruding portion.

Abstract: A toner housing container includes: a container body housing a toner; a conveying portion; a pipe receiving port; and an uplifting portion. Flow rate index of the toner measured by powder rheometer and represented by “flow rate index=(total energy at a rotation speed of 10 mm/s)/(total energy at a rotation speed of 100 mm/s)” is in a range of “1.8?flow rate index?6.5”. Container body includes protruding portion protruding from container body interior side of container opening portion toward one end of container body. Uplifting portion includes: uplifting wall surface extending from container body internal wall surface toward protruding portion; and curving portion curving to conform to protruding portion. When the toner housing container is mounted on the toner conveying device, the protruding portion is present between the curving portion and the toner receiving port of the conveying pipe being inserted.

Abstract: Toner housing container includes: container body mountable on toner conveying device and housing toner supplied into toner conveying device; conveying portion provided in container body and conveying toner from longer direction one end of container body to other end at which container opening portion is provided; pipe receiving port provided at container opening portion and receiving conveying pipe fixed to toner conveying device; and uplifting portion to move toner conveyed by conveying portion toward toner receiving port of conveying pipe. Toner has loose apparent density of 0.28 g/cm3 to 0.53 g/cm3. Container body includes protruding portion protruding from container body interior side of container opening portion toward one end. Uplifting portion includes uplifting wall surface extending from internal wall surface of container body toward protruding portion, and curving portion curving to conform to protruding portion.

Abstract: Provided is an electrostatic charge image developing toner, including: toner base particles including a polyester resin as a binder resin; and an external additive on the surface of the toner base particles. The external additive includes silica. The silica is produced by sol-gel method, and is aspherical. The percentage of change in the specific surface area of the toner when it is stored under high-temperature, high-humidity conditions is from 25% to 45%.

Abstract: To provide a toner, which contains silica particles containing first silica particles, and second silica particles, wherein the toner is a toner produced by depositing the silica particles on surfaces of base particles, the first silica particles have an average primary particle diameter of 75 nm to 250 nm, the second silica particles have an average primary particle diameter of 10 nm to 50 nm, a mass ratio of the first silica particles to the base particles is 0.010 to 0.040, a mass ratio of the second silica particles to the base particles is 0.005 to 0.030, a liberation ratio of the silica particles from the toner by a ultrasonic vibration method is 5% by mass to 20% by mass, and an amount of particles having primary particle diameters of 30 nm or smaller in the silica particles librated from the toner by the ultrasonic vibration method is 20% by number or less.

Abstract: The present invention provides a golf club head comprising: a face section made of a low specific gravity metal not higher than 5; and a back face section made of a clad material in which the low specific gravity metal and a high specific gravity metal not lower than 7 are metallurgically bonded to each other in advance, wherein the low specific gravity metal of the face section and the low specific gravity metal of the clad material are integrally joined to each other by welding so as to form a club head. In this case, the methods of welding of TIG, plasma arc and laser beams are used in which a U-shaped and/or V-shaped groove is formed. In this golf club head, it is possible to improve the mechanical strength of the joint portion, and it is also possible to produce the golf club head in a short period of time.