Abstract: A mail server unit receives an electronic mail sent by a mail sender, the mail being received via a mailer of a terminal of the mail sender, sets a browsing privilege for an attachment of the mail and encrypts the attachment, controls the browsing privilege for the attachment, executes error processing when control items are set to the attachment, and executes processing to decrypt an encrypted attachment.

Abstract: The present invention provides a positron source essentially consisting of a carbon member having 18F bound onto the surface thereof, a method of a preparing the same, and an automated system for supplying the same. In the present invention, the positron source is prepared by irradiating a solution 35 containing both H218O and a small amount of natural fluorine ions with a beam of charged particles to generate 18F, and then passing an electric current through the solution 35 using a carbon member 40 as an anode to cause to bind the generated 18F onto the surface of the carbon member 40.

Abstract: The present invention provides a positron source essentially consisting of a carbon member having 18F bound onto the surface thereof, a method of preparing the same, and an automated system for supplying the same. In the present invention, the positron source is prepared by irradiating a solution 35 containing both H218O and a small amount of natural fluorine ions with a beam of charged particles to generate 18F, and then passing an electric current through the solution 35 using a carbon member 40 as an anode to cause to bind the generated 18F onto the surface of the carbon member 40.

Abstract: The present invention provides a positron source essentially consisting of a carbon member having 18F bound onto the surface thereof, a method of preparing the same, and an automated system for supplying the same. In the present invention, the positron source is prepared by irradiating a solution containing both H218O and a small amount of natural fluorine ions with a beam of charged particles to generate 18F, and then passing an electric current through the solution using a carbon member 40 as an anode to cause to bind the generated 18F onto the surface of the carbon member.

Abstract: A speech model is produced for use in determining whether a speaker associated with the speech model produced an unidentified speech sample. First a sample of speech of a particular speaker is obtained. Next, the contents of the sample of speech are identified using speech recognition. Finally, a speech model associated with the particular speaker is produced using the sample of speech and the identified contents thereof. The speech model is produced without using an external mechanism to monitor the accuracy with which the contents were identified.

Abstract: An anti-fogging film consisting essentially of a thin film of a transparent synthetic resin, which has micro concavities of at most 20 .mu.m in width and at most 10 .mu.m in depth formed over the entire surface of at least one side of the thin film, the total area of the micro concavities being from 20 to 80% of the area of the film surface on which the concavities are formed.