Abstract: Provided is a wireless LAN system in which an interference control signal transmitter that is provided in the surroundings of the wireless LAN base station and the wireless LAN terminal, and is configured to collect wireless environment information regarding the interfering AP/STA, and transmit, to the interfering AP/STA, an interference control signal that is to be used to set a transmission waiting period; and an interference control signal management device configured to collect the wireless environment information from the interference control signal transmitter, determine the interference control signal transmitter whose communication area includes the interfering AP/STA based on the wireless environment information, and control the determined interference control signal transmitter to transmit the interference control signal to be used to set the transmission waiting period that corresponds to a length of time of the communication between the wireless LAN base station and the wireless LAN terminal, wher

Abstract: Disclosed is a polythiocarbonate poly(thio)epoxide in which a hydrogen atom in a mercapto group of a polythiocarbonate polythiol is substituted with a (thio)epoxy-containing group. By using this compound as a starting material, there can be obtained a polythioether or a sulfur-containing polyether having, in addition to excellent optical properties (a high refractive index and a high Abbe's number), excellent mechanical properties (a high bending distortion) and a high glass transition temperature.

Abstract: Disclosed is a polythiocarbonate poly(thio)epoxide in which a hydrogen atom in a mercapto group of a polythiocarbonate polythiol is substituted with a (thio)epoxy-containing group. By using this compound as a starting material, there can be obtained a polythioether or a sulfur-containing polyether having, in addition to excellent optical properties (a high refractive index and a high Abbe's number), excellent mechanical properties (a high bending distortion) and a high glass transition temperature.

Abstract: The present invention provides a method for producing high molecular-weight fucoidan, which is expected to be promising as a cosmetic composition or an agent in the field of dermatology, and a high molecular-weight fucoidan-containing composition. A component containing fucoidan having a weight average molecular weight of 1,000,000 to 2,000,000 obtained through the steps of performing hot water extraction of a mozuku alga body of the genus Cladosiphon at pH 6.0 or higher, which ranges from neutral to alkaline, removing low-molecular weight compound through ultrafiltration, and adjusting a final pH to 6.5 or higher is effective as a cosmetic composition or an agent in the field dermatology, and is also excellent in storage stability.

Abstract: In an analog front end (FE) IC chip having a CDS (Correlated Double Sampling) function and an AGC (Automatic Gain Control) function, a clamp circuit for clamping an output signal during a black reference signal period is equipped with a mechanism for suppressing the effect of noises contaminated from a power source, external circuits, etc.

Abstract: In an analog front end (FE) IC chip having a CDS (Correlated Double Sampling) function and an AGC (Automatic Gain Control) function, a clamp circuit for clamping an output signal during a black reference signal period is equipped with a mechanism for suppressing the effect of noises contaminated from a power source, external circuits, etc.

Abstract: In an analog front end (FE) IC chip having a CDS (Correlated Double Sampling) function and an AGC (Automatic Gain Control) function, a clamp circuit for clamping an output signal during a black reference signal period is equipped with a mechanism for suppressing the effect of noises contaminated from a power source, external circuits, etc.

Abstract: A communication circuit system of an IC card etc.

Abstract: Disclosed are an aralkylaminopyrimidine compound represented by the following formula: ##STR1## wherein R.sup.1 represents a halogen atom, a lower acyloxy group, a hydroxyl group, a lower alkoxy group or a lower alkylthio group; R.sup.2 represents a lower alkyl group, a hydrogen atom or a cycloalkyl group; R.sup.3 may be the same or different and represents a lower haloalkoxy group, a hydrogen atom, a lower alkyl group, a lower alkoxy group, a halogen atom, a lower alkylthio group, a nitro group, a lower haloalkyl group, a lower alkylsulfinyl group, a lower alkylsulfonyl group, a lower haloalkylthio group or a hydroxyl group; a carbon atom to which * is attached represents an asymmetric carbon atom provided that the case where R.sup.2 is a hydrogen atom is excluded; and n represents an integer of 1 to 5.a method for preparing the same and a chemical for controlling noxious organisms which contains the same as an active ingredient.