Abstract: A data encryption method is implemented by a data encryption system including a processing unit and a plurality of operating units which are electrically connected to the processing unit. Each operating unit includes an encryption element and a memory element storing a plurality of encryption programs. Each encryption program has a different combination of encryption algorithm and encryption mode. The data encryption method includes steps of: selecting one of the encryption programs randomly by each encryption element; receiving, by each encryption element, one of a plurality of keys randomly generated; inputting an unencrypted data; dividing the unencrypted data into a plurality of unencrypted data blocks by the processing unit; and encrypting the unencrypted data blocks according to the selected encryption programs and received keys by the encryption elements, respectively, to generate an encrypted data. A data encryption system is also disclosed.

Abstract: A data encryption method is implemented by a data encryption system including a processing unit and a plurality of operating units which are electrically connected to the processing unit. Each operating unit includes an encryption element and a memory element storing a plurality of encryption programs. Each encryption program has a different combination of encryption algorithm and encryption mode. The data encryption method includes steps of: selecting one of the encryption programs randomly by each encryption element; receiving, by each encryption element, one of a plurality of keys randomly generated; inputting an unencrypted data; dividing the unencrypted data into a plurality of unencrypted data blocks by the processing unit; and encrypting the unencrypted data blocks according to the selected encryption programs and received keys by the encryption elements, respectively, to generate an encrypted data. A data encryption system is also disclosed.

Abstract: A droplet microfluidic transporting module adapted for transporting a droplet is disclosed to include one or a number of connectors and one or a number of microfluidic transporting platform. Each connector defines a passage extending in one or multiple predetermined directions, and a first driving electrode extending along one side of the passage for the contact of the droplet to be transported. The microfluidic transporting platform is detachably electrically connected with the connector, defining a channel in communication with the passage of the connector and having a second driving electrode extending along one side of the channel for the contact of the droplet to be transported.

Abstract: A multi user communications terminal apparatus providing simultaneous access for a plurality of users to a communications network in which the geographical locations of each user are registered and periodically updated, the terminal apparatus comprising a plurality of user terminals (320) each including electroacoustic transducers (34,36); and a common RF unit (304) comprising a shared RF amplifier (342) for coupling to a shared antenna system (302), in which the terminal apparatus comprises means (348) for transmitting common location updating signals, and is arranged not to transmit separate location update signals for every one of said users.

Abstract: Thin film polymer blend members which may be used for the separation of gases will comprise a blend of an inorganic compound such as phosphoric acid, sulfuric acid, heteropoly acids or salts of heteropoly acids, an organic polymer such as poly(vinyl alcohol) and a poly organic acid such as poly(acrylic acid), poly(methacrylic acid) or poly(styrene sulfonic acid). The thin film membrane composites may be used as gas separation or gas sensor devices.

Abstract: Apparatus and method for performing an electrochemical process involving hydrogen and gaseous compounds capable of dissociating into or combining with hydrogen ions using a solid electrolyte concentraton cell. Specific applications are fuel cells for producing an electrical current and separation of hydrogen from a gaseous mixture. A novel solid electrolyte membrane is used which comprises a three-component blend prepared by admixing an organic polymer, such as poly(vinyl alcohol), with an inorganic comound, such as a phosphoric acid, and a polyorganic acid, such as poly(acrylic acid), in a mutually miscible solvent. For increased strength, a membrane may be composited with or attached to a porous support. In one embodiment, electrically conductive particles with catalyst are partially embedded in the membrane to form a hydrogen separating device.

Abstract: Apparatus and method for detecting and measuring hydrogen and gaseous compounds capable of dissociating into or combining with hydrogen ions using a solid electrolyte concentration cell. A novel solid electrolyte membrane is used which comprises a three-component blend prepared by admixing an organic polymer, such as poly(vinyl alcohol), with an inorganic compound, such as a phosphoric acid, and a poly organic acid, such as poly(acrylic acid), in a mutually miscible solvent. A reference gas or a solid reference substance is used. For increased strength, a membrane may be composited with or attached to a porous support.

Abstract: Thin film polymer blend membranes which may be used for the separation of gases will consist of a blend of an inorganic compound such as phosphoric acid, sulfuric acid, heteropoly acids or salts of heteropoly acids, an organic polymer such as poly(vinyl alcohol) and a poly organic acid such as poly(acrylic acid), poly(methacrylic acid) or poly(styrene sulfonic acid). The thin film membrane composites may be used as gas separation or gas sensor devices.