Abstract: To provide a high-frequency power amplifier capable of improving the linearity and efficiency of a high-frequency power amplifier by stabilizing, at high frequencies, the bias voltage of a bias circuit featuring the temperature compensating effect of a high-frequency amplifying transistor, a capacitor 61 is connected between the base of a bias supply transistor 41 and a reference potential. It is thus possible to possible to suppress variations in the base voltage of the bias supply transistor 41 in particular when the high-frequency power amplifier is at high output and improve the linearity of the high-frequency power amplifier.

Abstract: A medical valve includes: (a) a housing having a hollow body opened at the top end, wherein the tip of a male luer is to be removably inserted in the housing; (b) a spike disposed to extend longitudinally in the housing, the spike except at least the top end portion being formed in an approximately tapered shape in which its outside diameter becomes progressively smaller toward the top end portion, wherein a fluid transferring passage, which is opened radially outwardly, is formed to extend longitudinally in the spike; and (c) an elastic seal having an elastically deformable tubular shape fitted on the spike to seal the spike, the elastic seal including a top end portion having an openable/closable portion to be openably closed over the spike, wherein the elastic seal is elastically deformed to be downwardly shrunk by downward pressure due to the tip of the male luer.

Abstract: A medical connector capable of allowing, in which a stepped portion is not formed between upper surfaces of a valve and a housing, includes a disc shaped valve member which has a slit formed at a center portion thereof; a housing with a substantially cylindrical shape which sandwiches a circumferential edge portion of the valve member; and an annular ring member which is disposed on an upper circumferential edge of the valve member other than the center portion thereof, wherein the housing has a pedestal which is formed on an inner circumferential surface thereof so as to protrude inward, the valve member being placed on the pedestal, and wherein the valve member is fixed to the inside of the housing by allowing the ring member and the housing to be joined to each other by a swaging process after the valve member is placed on the pedestal in the housing.

Abstract: A medical valve includes: (a) a housing having a hollow body opened at the top end, wherein the tip of a male luer is to be removably inserted in the housing; (b) a spike disposed to extend longitudinally in the housing, the spike except at least the top end portion being formed in an approximately tapered shape in which its outside diameter becomes progressively smaller toward the top end portion, wherein a fluid transferring passage, which is opened radially outwardly, is formed to extend longitudinally in the spike; and (c) an elastic seal having an elastically deformable tubular shape fitted on the spike to seal the spike, the elastic seal including a top end portion having an openable/closable portion to be openably closed over the spike, wherein the elastic seal is elastically deformed to be downwardly shrunk by downward pressure due to the tip of the male luer.

Abstract: To provide a high-frequency power amplifier capable of improving the linearity and efficiency of a high-frequency power amplifier by stabilizing, at high frequencies, the bias voltage of a bias circuit featuring the temperature compensating effect of a high-frequency amplifying transistor, a capacitor 61 is connected between the base of a bias supply transistor 41 and a reference potential. It is thus possible to possible to suppress variations in the base voltage of the bias supply transistor 41 in particular when the high-frequency power amplifier is at high output and improve the linearity of the high-frequency power amplifier.

Abstract: A method of improving smoothness of an item to be washed during washing, including the step of washing the item with a washing liquid under conditions where an organic polymer having spinnability is present in the washing liquid; a process for hand-washing including the step of hand-washing an item to be washed with a washing liquid showing spinnability containing an organic polymer having spinnability, or a washing liquid prepared by diluting the washing liquid with more than 1-fold to 1,000-fold amount of water; a detergent composition containing an organic polymer having spinnability having an average molecular weight of 1,500,000 or more in an amount exceeding 0.1% by weight of the detergent composition; a laundry detergent composition comprising a polymer having an average molecular weight of 500,000 or more, wherein 60% by mole or more of constituting monomers has a sulfonic acid group or a salt form thereof, or a sulfuric acid group or a salt form thereof.

Abstract: A medical valve, to which a male luer is to be separably connected, comprises: (a) a housing having a hollow body opened at the top end, wherein the tip of the male luer is to be removably inserted in the housing; (b) a spike disposed to extend longitudinally in the housing, the spike except at least the top end portion being formed in an approximately tapered shape in which its outside diameter becomes progressively smaller toward the top end portion, wherein a fluid transferring passage, which is opened radially outwardly, is formed to extend longitudinally in the spike, the bottom portion of the fluid transferring passage being connected to a fluid circuit; and (c) an elastic seal having an elastically deformable tubular shape fitted on the spike to seal the spike, the elastic seal comprising a top end portion having an openable/closable portion to be openably closed over the spike, wherein the elastic seal is elastically deformed to be downwardly shrunk by downward pressure due to the tip of the male luer

Abstract: The present invention relates to a method for producing a frozen food and a frozen food produced by the process. There are provided a method for producing a frozen food characterized by subjecting a food to a contact treatment with an emulsifier-added fat or oil, and thereafter freezing the food; a frozen food produced by the method; and a method of preventing fluctuation in a water content of a frozen food, characterized by subjecting a food to a contact treatment with an emulsifier-added fat or oil, and thereafter freezing the food.