Nec Corporation

Asahi Kasei Medical Co., Ltd.

Ryo Hamamoto

Takayuki Sasaki

Tomoko Hongo

Fujiharu Nagoya

Yusuke Kon

An attestation systemincludes a trustworthiness calculation unitand an attestation unit. The trustworthiness calculation unitcalculates trustworthiness determined based on a state of a component, a method of attestation, or a result of attestation, for the component. The attestation unitperforms attestation of the component based on the trustworthiness.

Attestation system, attestation method, and attestation program

A data tracking unitincludes a distribution history storage unitthat stores a distribution history of data, a tracking tag adding unitthat adds a tracking tag used to identify tracking data, a first transmission unitthat transmits data to which the tracking tag is added to the component, and a distribution history registration unitthat registers a distribution history of the data to which the tracking tag is added, in the distribution history storage unit. The componentincludes a second transmission unitthat transmits data to which the same tracking tag as a tracking tag added to the received data is added to another componentor the data tracking unit. The history registration unitregisters a result of tracking of data associated with the same tracking tag, as a distribution history of the data, in the distribution history storage unit

Distribution history management system, distribution history management device, method, and program

A virus removal membrane is formed from a hydrophilized synthetic polymer, in which, when a solution containing gold colloids having a diameter of 20 nm is applied through a primary surface to the virus removal membrane to allow the virus removal membrane to capture the gold colloids for measurement of brightness in a cross section of the virus removal membrane, a value obtained by dividing a standard deviation of a value of an area of a spectrum of variation in the brightness by an average of the value of the area is 0.01 or more and 1.5 or less; and a thickness of a portion, where gold colloids having a diameter of 20 nm or more and 30 nm or less are captured, in the cross section of the virus removal membrane in a wet state is 10 &#x3bc;m or more and 30 &#x3bc;m or less.

Virus removal membrane

A virus removal membrane is formed from cellulose, in which, when a solution containing gold colloids having a diameter of 20 nm is applied through a primary surface to the virus removal membrane to allow the virus removal membrane to capture the gold colloids for measurement of brightness in a cross section of the virus removal membrane, a value obtained by dividing a standard deviation of a value of an area of a spectrum of variation in the brightness by an average of the value of the area is 0.01 or more and 1.5 or less; and a thickness of a portion, where gold colloids having a diameter of 20 nm or more and 30 nm or less are captured, in the cross section of the virus removal membrane in a wet state is 10.0 &#x3bc;m or more and 30.0 &#x3bc;m or less.

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Tokyo, Japan

Ryo Hamamoto