Abstract: A method and apparatus for providing a single screen interactive display to facilitate the purchase of goods and/or services over a global computer network such as the Internet. A single screen interactive program is downloaded form a merchant website to a user computer based on user request. In one embodiment, an apparatus includes a display device including a display, a memory including one or more instructions, and a processor coupled to the memory and display device. The processor, in response to the one or more instructions, provides a catalogue of one or more product categories in a first frame of the display, and provides, in a second frame of the display, a list of one or more products in a product category selected by a user. The list includes an icon next to each product. The processor further provides, in a third frame of the display, a shopping cart list of one or more products added by selection of an icon in the second frame associated with the one or more products.

Abstract: In one aspect, the system of the present invention enhances shopping search engines and games of chance by permitting the user to search for and locate the prize the user seeks to win or buy, and then playing a game of chance to win the specified item, or going to the web site to buy. In another aspect, the system of the present invention adjusts the probability of a user's winning a game of chance in accordance with the revenue that the system has received from the user.

Abstract: Highly purified ammonia for use in semiconductor manufacturing is prepared on-site by drawing ammonia vapor from a liquid ammonia reservoir, passing the vapor through a filter capable of filtering out particles of less than 0.005 micron in size, and scrubbing the filtered vapor in a high-pH aqueous scrubber.

Abstract: Disclosed is an improved spillstrip ring for use in forming a tip seal in an axial flow elastic fluid turbine having one or more stages. Each turbine stage has a diaphragm and a rotor. The spillstrip ring consists of an arrangement of spillstrips mounted in a circumferentially groove formed in the diaphragm. Each spillstrip includes a body portion having a longitudinal extent, a vertical extent, and a horizontal extent, and is particularly adapted for mounting in the circumferential groove in the diaphragm. At least one projection extends from the body portion substantially parallel to the vertical extent thereof, and along the longitudinal extent of the body portion. Such projection has tapered side walls which converge to a tip seal that continuously extends along the longitudinal extent of the body portion.

Abstract: The present invention provides a hand and arm support including a glove body, a front edge, and a rear edge. The front edge includes a plurality of spaced finger holes, while the rear edge defines an opening for a hand. The glove body is made from a thin lightweight elastic spandex material. The hand and arm support optionally includes finger extensions for covering portions of a wearer's fingers, and a forearm extension for covering portions of the wearer's wrist and forearm.

Abstract: A mutein of an enzyme acceptor polypeptide fragment of .beta.-galactosidase which is resistant to oxidation is provided. The enzyme acceptor fragment has an amino acid other than cysteine located at position 602 of the natural sequence. An especially preferred substitution is serine. Also provided are a method for producing the novel mutein, a reagent composition comprising the novel mutein, and an immunoassay method for determining an analyte in which the novel mutein recombines with an enzyme donor polypeptide fragment to form enzymatically active .beta.-galactosidase.

Abstract: The present invention provides a hand and wrist support including a glove body, a front edge, and a rear edge. The front edge includes a plurality of spaced finger holes, while the rear edge defines an opening for a hand. The glove body is made from a thin lightweight elastic spandex material.

Abstract: A switchless circuit malfunction sensor utilizes only two leads, connecting open circuit sensors in parallel across the leads and closed circuit sensors in series in line with the leads. A continuity module at one end of the sensor line permits the wiring status of the monitored circuit to be constantly monitored for breaks or shorts. The continuity module can be coupled to an alarm system to activate an audio or visual signal if a circuit malfunction is sensed.

Abstract: An air flow sensor has a hollow tubular housing partially filled with potting compound and having a printed circuit board mounted in the compound inside the tube. The board is mounted such that two power resistors and a first heat sensing switch mounted on the board are embedded in the potting compound, and a second heat sensing switch mounted on the board above the compound is in contact with the ambient atmosphere. The power resistors are connected in parallel to a power source driving a fan, and the first switch has an actuation temperature selected to activate the switch when the power resistors radiate a selected amount of heat. The second switch also has an actuation temperature due to lack of air flow chosen to activate the switch when the ambient atmosphere reaches the designated temperature.