Abstract: The present invention relates to RFID devices, including handheld RFID devices, and applications for such devices. The devices and applications may be used in connection with items that are associated with an RFID tag, and optionally a magnetic security element. The devices and applications are described with particular reference to library materials such as books, periodicals, and magnetic and optical media.

Abstract: The present invention relates to RFID devices, including handheld RFID devices, and applications for such devices. The devices and applications may be used in connection with items that are associated with an RFID tag, and optionally a magnetic security element. The devices and applications are described with particular reference to library materials such as books, periodicals, and magnetic and optical media.

Abstract: The present invention relates to RFID devices, including handheld RFID devices, and applications for such devices. The devices and applications may be used in connection with items that are associated with an RFID tag, and optionally a magnetic security element. The devices and applications are described with particular reference to library materials such as books, periodicals, and magnetic and optical media.

Abstract: An applicator has a ratchet mechanism for dispensing material from a single or multiple barrel container. The ratchet mechanism includes a clutch that substantially prevents movement of a plunger of the applicator whenever a resistance to plunger movement is greater than a certain value. As a consequence, bursting of the container, or damage to components of the applicator, is substantially avoided. A resilient, integral pawl hinders unintentional rearward movement of the plunger and provides for a compact construction especially suitable for use in dispensing dental material.

Abstract: A dispensing system for dental material made of two components has a dual chamber cartridge that releasably connects to an applicator. The chambers of the cartridge are located in an over-under orientation relative to the user's grip on the applicator, enabling the system to be especially useful for placing dental material in regions of the patient's oral cavity that are difficult to access. Certain embodiments of the invention include a static mixing assembly having a swivelable cannula, and an exit conduit of the mixing assembly is optionally curved along its length. Other aspects of the invention relate to a reusable hygienic sheath useful for covering a dual chamber cartridge as well as a single chamber cartridge.

Abstract: Removal and/or clean-up of polychlorinated biphenyls (PCBs) from contaminated surfaces with novel compositions of petroleum distillate and wetting agent mixtures.

Abstract: Removal and/or clean-up of polychlorinated biphenyls (PCBs) from contaminated surfaces with novel compositions of petroleum distillates and wetting agents.

Abstract: Removal and/or clean-up of polychlorinated biphenyls (PCBs) from contaminated surfaces with novel compositions of petroleum distillate and wetting agent mixtures.