Abstract: According to the present invention, immortalized cells derived from porcine kidney macrophages are found to have high infection susceptibility to various African swlne fever virus strains. As a result, using the cells, it is possible to proliferate the virus and furthermore produce and detect the virus.

Abstract: The present invention has successfully established a mixed culture system capable of actively proliferating a Kupffer cell in a primary culture of a cell population derived from a liver. Additionally, the present invention has successfully established a novel production method for efficiently producing a large amount of highly purified Kupffer cells using this mixed culture system.

Abstract: The present invention has successfully established a mixed culture system capable of actively proliferating a Kupffer cell in a primary culture of a cell population derived from a liver. Additionally, the present invention has successfully established a novel production method for efficiently producing a large amount of highly purified Kupffer cells using this mixed culture system.

Abstract: The present invention provides a semiconductor integrated device which can suppress high-frequency noise and which can thus stabilize the output voltage and power supply voltage of the reference voltage generating circuit. This semiconductor integrated device comprises a reference voltage generating circuit, a first bonding pad which is connected to the output of this reference voltage generating circuit, a lead which is connected to this first bonding pad via a first bonding wire, a second bonding pad which is connected to this lead via a second bonding wire, and a circuit which generates high-frequency noise and is connected to this second bonding pad.

Abstract: The present invention provides a switching regulator for controlling the overshoot voltage which is generated during transition from power ON, when soft start activates, to normal operation, when the load side output is maintained at the output setting voltage by the feedback circuit. A clamp circuit is disposed between a soft start circuit and an error amplifier, an upper limit value from the output of the soft start circuit (SS) to the output of the error amplifier (FB) is set, so that the rise of voltage of the output of the error amplifier (FB) is controlled when power is turned ON, and time until the output of the error amplifier (FB) is stabilized is decreased, by which the overshoot voltage generated in the load side output (VOUT) is controlled.

Abstract: The present invention provides a semiconductor integrated device which can suppress high-frequency noise and which can thus stabilize the output voltage and power supply voltage of the reference voltage generating circuit. This semiconductor integrated device comprises a reference voltage generating circuit, a first bonding pad which is connected to the output of this reference voltage generating circuit, a lead which is connected to this first bonding pad via a first bonding wire, a second bonding pad which is connected to this lead via a second bonding wire, and a circuit which generates high-frequency noise and is connected to this second bonding pad.

Abstract: The present invention provides a switching regulator for controlling the overshoot voltage which is generated during transition from power ON, when soft start activates, to normal operation, when the load side output is maintained at the output setting voltage by the feedback circuit. A clamp circuit is disposed between a soft start circuit and an error amplifier, an upper limit value from the output of the soft start circuit (SS) to the output of the error amplifier (FB) is set, so that the rise of voltage of the output of the error amplifier (FB) is controlled when power is turned ON, and time until the output of the error amplifier (FB) is stabilized is decreased, by which the overshoot voltage generated in the load side output (VOUT) is controlled.

Abstract: A sound deadening member for electrophotographic photoreceptor composed of a molded thermoplastic resin composition obtained by compounding at least 10 parts by weight of a copolymer (A) having a glass transition point of at least 40° C. and being made of from 10 to 90% by weight (meth)acrylic acid ester monomer(s) and not more than 90 parts by weight of a styrene-base resin (B) such that the sum total becomes 100 parts by weight and an electrophotographic photoreceptor having the sound deadening member for electrophotographic photoreceptor in the inside of the conductive substrate.