Abstract: An interactive television system and method for generating video programming combined with triggers and then, in turn, for viewing that video programming as the triggers present information associated with the triggers. When triggered by the viewer, the remote control will generate a request using a user interface coupled to at least one of the set top box or the television, the request being based on a user selection of the presented information associated with the triggers; that request will retrieve information at the request processing system based on the generated request; and present the retrieved information that is based on the request at a user computer system coupled to the request processing system.

Abstract: An interactive television system and method for generating advertising combined with triggers and then, in turn, for viewing that advertising as the triggers present information associated with the triggers. When triggered by the viewer, the request will retrieve information at the request processing system based on the generated request; and present the retrieved information that is based on the request at a user computer system.

Abstract: An upright vacuum cleaner includes a nozzle assembly having an intake opening. A handle assembly is pivotally connected to the nozzle assembly. The vacuum cleaner also includes a suction generator and a dirt collection vessel. In addition, the vacuum cleaner includes a flexible, electrified hose such as a stretch hose.

Abstract: An upright vacuum cleaner includes a nozzle assembly, a canister assembly pivotally mounted to said nozzle assembly, a suction fan and drive motor and a biaser. The biaser has a first end that engages the nozzle assembly and a second end that engages the canister assembly. The biaser provides a positive downforce urging the forward end of the nozzle assembly toward the surface being cleaned.

Abstract: An upright vacuum cleaner includes a nozzle assembly, a canister assembly pivotally mounted to said nozzle assembly, a suction fan and motor and a biaser. The biaser has a first end that engages the nozzle assembly and a second end that engages the canister assembly. The biaser provides a positive downforce urging the forward end of the nozzle assembly toward the surface being cleaned.

Abstract: An upright vacuum cleaner includes a nozzle assembly, a canister assembly pivotally mounted to said nozzle assembly, a suction fan and motor and a biaser. The biaser has a first end that engages the nozzle assembly and a second end that engages the canister assembly. The biaser provides a positive downforce urging the forward end of the nozzle assembly toward the surface being cleaned.

Abstract: An upright vacuum cleaner includes a nozzle assembly, a canister assembly pivotally mounted to said nozzle assembly, a suction fan and drive motor and a biaser. The biaser has a first end that engages the nozzle assembly and a second end that engages the canister assembly. The biaser provides a positive downforce urging the forward end of the nozzle assembly toward the surface being cleaned.

Abstract: An upright vacuum cleaner includes a nozzle assembly, a canister assembly pivotally mounted to said nozzle assembly, a suction fan and motor and a biaser. The biaser has a first end that engages the nozzle assembly and a second end that engages the canister assembly. The biaser provides a positive downforce urging the forward end of the nozzle assembly toward the surface being cleaned.

Abstract: An upright vacuum cleaner includes a nozzle assembly, a canister assembly pivotally mounted to said nozzle assembly, a suction fan and drive motor and a biaser. The biaser has a first end that engages the nozzle assembly and a second end that engages the canister assembly. The biaser provides a positive downforce urging the forward end of the nozzle assembly toward the surface being cleaned.

Abstract: An interactive television system and method for generating video programming combined with triggers and then, in turn, for viewing that video programming as the triggers present information associated with the triggers. When triggered by the viewer, the remote control will generate a request using a user interface coupled to at least one of the set top box or the television, the request being based on a user selection of the presented information associated with the triggers; that request will retrieve information at the request processing system based on the generated request; and present the retrieved information that is based on the request at a user computer system coupled to the request processing system.

Abstract: An interactive television system and method for generating video programming combined with triggers and then, in turn, for viewing that video programming as the triggers present information associated with the triggers. When triggered by the viewer, the remote control will generate a request using a user interface coupled to at least one of the set top box or the television, the request being based on a user selection of the presented information associated with the triggers; that request will retrieve information at the request processing system based on the generated request; and present the retrieved information that is based on the request at a user computer system coupled to the request processing system.

Abstract: An upright vacuum cleaner includes a nozzle assembly, a canister assembly pivotally mounted to said nozzle assembly, a suction fan and drive motor and a biaser. The biaser has a first end that engages the nozzle assembly and a second end that engages the canister assembly. The biaser provides a positive downforce urging the forward end of the nozzle assembly toward the surface being cleaned.

Abstract: An interactive television system and method for generating video programming combined with triggers and then, in turn, for viewing that video programming as the triggers present information associated with the triggers. When triggered by the viewer, the remote control will generate a request using a user interface coupled to at least one of the set top box or the television, the request being based on a user selection of the presented information associated with the triggers; that request will retrieve information at the request processing system based on the generated request; and present the retrieved information that is based on the request at a user computer system coupled to the request processing system.

Abstract: The invention features methods for identifying gene products that mediate a phenotype, such as drug resistance or sensitivity, as well as methods for identifying new bioactive compounds, by detecting differences in sensitivity of growth rate between host cells that differ in target gene product dosage (e.g., two copies of a target gene product-encoding sequence compared to one copy).

Abstract: A gel electrophoresis method and apparatus is described in which the shape and orientation of the electric field is controlled by contour clamping. Electrodes are arranged around a closed contour. Two or more electrodes, the driving electrodes, are clamped at a potential difference .phi..sub.0 to establish the general orientation and strength of the electric field. The remaining electrodes are clamped to intermediate potentials to control the shape of the field established by the driving electrodes. The field is varied in accordance with the purpose of the electrophoresis, depending upon the size of the particles and the information to be determined concerning the particles.

Abstract: A gel electrophoresis method and apparatus is described in which the shape and orientation of the electric field is controlled by contour clamping. Electrodes are arranged around a closed contour. Two or more electrodes, the driving electrodes, are clamped at a potential difference .phi..sub.0 to establish the general orientation and strength of the electric field. The remaining electrodes are clamped to intermediate potentials to control the shape of the field established by the driving electrodes. The field is varied in accordance with the purpose of the electrophoresis, depending upon the size of the particles and the information to be determined concerning the particles.