Abstract: Interleukin-2 (IL-2) conjugates comprising at least one or more amino acid substitutions that bias binding to the IL-2 receptor ??c dimer over binding the IL-2 receptor ???c trimer and a non-natural amino acid at or near the N-terminus conjugated to a water-soluble polymer are described. The IL-2 conjugates are useful for treatment and prevention of cell proliferation and cancer in a patient.

Abstract: A downflow catalytic cracking reactor, comprising the following components: catalyst delivery pipe (1), reactor top cover (2), feed nozzle (3), reactor vessel (6), downflow reaction pipe (9), the upper end of the outer body is close connected to top cover (2) along the direction of circumference; the bottom of the outer wall body is close connected to the outer wall of the downflow reaction pipe; the upper section of the downflow reaction pipe is located inside the reaction vessel, while the lower section extends from the bottom of the outer body; feed nozzle (3) is located on the top cover (2) and/or side wall of the reactor vessel (6) with the outlet of the feed nozzle being above the inlet of the downflow reaction pipe; catalyst delivery pipe (1) is fixedly joined to the reactor vessel and in communication with catalyst lifting zone (7) formed by the reaction vessel and the downflow reaction pipe.

Abstract: A circuit powering an electrical device based on a commanded current signal is provided. The circuit includes a linear current amplifier which sets a desired current flow. The circuit also dynamically controls a supply voltage in order to minimize power dissipation of the linear current amplifier. The circuit may also include a voltage drop measurement amplifier, a voltage shaping amplifier, and a switching power supply. The circuit is useful for controlling electrical devices requiring precise current control and minimal power dissipation, for example, driving light-emitting diodes (LEDs) that provide illumination inside the passenger compartment of a vehicle for an imaging occupant detection system.

Abstract: A stripper and a stripping process for removing the flue gas carried by regenerated catalyst. A cylindrical stripper mainly comprises a degassing pipe at the longitudinal axis, a horizontal pipe connected with the lower end of the degassing pipe, several sets of inner annular baffles and outer annular baffles arranged in alternative arrangement along the vertical direction. Inner annular baffles are fixed on the degassing pipe, outer annular baffles are fixed on the inner wall of the cylinder. The degassing pipe has holes below each set of the inner annular baffles. The regenerated catalyst enters the stripper from the upper part, comes into a countercurrent and crosscurrent contact with steam from the annular steam conduit, and the stripped regenerated catalyst leaves the stripper from the bottom.

Abstract: A circuit powering an electrical device based on a commanded current signal is provided. The circuit includes a linear current amplifier which sets a desired current flow. The circuit also dynamically controls a supply voltage in order to minimize power dissipation of the linear current amplifier. The circuit may also include a voltage drop measurement amplifier, a voltage shaping amplifier, and a switching power supply. The circuit is useful for controlling electrical devices requiring precise current control and minimal power dissipation, for example, driving light-emitting diodes (LEDs) that provide illumination inside the passenger compartment of a vehicle for an imaging occupant detection system.

Abstract: A host processor to camera interface includes a camera side interface, a host processor side interface and a cable coupling a camera side transmitter to a host processor side receiver.

Abstract: A stripper and a stripping process for removing the flue gas carried by regenerated catalyst. A cylindrical stripper mainly comprises a degassing pipe at the longitudinal axis, a horizontal pipe connected with the lower end of the degassing pipe, several sets of inner annular baffles and outer annular baffles arranged in alternative arrangement along the vertical direction. Inner annular baffles are fixed on the degassing pipe, outer annular baffles are fixed on the inner wall of the cylinder. The degassing pipe has holes below each set of the inner annular baffles. The regenerated catalyst enters the stripper from the upper part, comes into a countercurrent and crosscurrent contact with steam from the annular steam conduit, and the stripped regenerated catalyst leaves the stripper from the bottom.

Abstract: A motion sensing system and method for detecting an occupant in a vehicle with enhanced sensitivity to detect small movement, such as movement caused by heartbeat and breathing of an occupant. The system includes a radar motion sensor located in a compartment of the vehicle. The radar sensor transmits and receives signals within the compartment and generates sensed signals. The system has a controller for converting the sensed signals to a frequency domain. The controller further processes the frequency domain of sensed signals and determines the presence of movement of an occupant due to one of heartbeat and breathing of the occupant.

Abstract: A stripper and a stripping process for removing the flue gas carried by regenerated catalyst. A cylindrical stripper mainly comprises a degassing pipe at the longitudinal axis, a horizontal pipe connected with the lower end of the degassing pipe, several sets of inner annular baffles and outer annular baffles arranged in alternative arrangement along the vertical direction. Inner annular baffles are fixed on the degassing pipe, outer annular baffles are fixed on the inner wall of the cylinder. The degassing pipe has holes below each set of the inner annular baffles. The regenerated catalyst enters the stripper from the upper part, comes into a countercurrent and crosscurrent contact with steam from the annular steam conduit, and the stripped regenerated catalyst leaves the stripper from the bottom.

Abstract: A downflow catalytic cracking reactor, comprising: one or more catalyst delivery pipes, reactor top cover, one or more feed nozzles, reactor vessel, downflow reaction pipe, the upper end of the reaction vessel is close connected with top cover along the direction of circumference; the bottom of the reactor vessel is close connected with the outer wall of the downflow reaction pipe; the upper section of the downflow reaction pipe locates inside the reactor vessel, while the lower section extends from the bottom of the reactor vessel; feed nozzle locates on the top cover and/or side wall of the reactor vessel with the outlet of the feed nozzle being above the inlet of downflow reaction pipe; catalyst delivery pipe is fixedly jointed with the reactor vessel and communicated with catalyst lifting zone formed by the reactor vessel and the downflow reaction pipe. Besides, the present invention also provides the use of the reactor.

Abstract: A motion sensing system and method for detecting an occupant in a vehicle with enhanced sensitivity to detect small movement, such as movement caused by heartbeat and breathing of an occupant. The system includes a radar motion sensor located in a compartment of the vehicle. The radar sensor transmits and receives signals within the compartment and generates sensed signals. The system has a controller for converting the sensed signals to a frequency domain. The controller further processes the frequency domain of sensed signals and determines the presence of movement of an occupant due to one of heartbeat and breathing of the occupant.

Abstract: A stripper and a stripping process for removing the flue gas carried by regenerated catalyst. A cylindrical stripper mainly comprises a degassing pipe at the longitudinal axis, a horizontal pipe connected with the lower end of the degassing pipe, several sets of inner annular baffles and outer annular baffles arranged in alternative arrangement along the vertical direction. Inner annular baffles are fixed on the degassing pipe, outer annular baffles are fixed on the inner wall of the cylinder. The degassing pipe has holes below each set of the inner annular baffles. The regenerated catalyst enters the stripper from the upper part, comes into a countercurrent and crosscurrent contact with steam from the annular steam conduit, and the stripped regenerated catalyst leaves the stripper from the bottom.

Abstract: An ultrasonic ranging system and method for detecting the presence of and distance to a target using ultrasonic sound waves generated by an ultrasonic transducer with reduced audible noise. Electrical ultrasonic signal pulses are modulated according to a smooth modulation envelope and a transducer drive signal is generated from the modulated signal pulses. The transducer drive signal drives an ultrasonic transducer which generates ultrasonic sound waves for transmission in a desired path, and further receives ultrasonic sound waves reflected from targets in the transmission path. The received ultrasonic sound waves are converted to an electrical signal that is processed by a processor to provide time and distance information to the target. The distance information is computed by using a middle time value for the transmitted and received signals.

Abstract: An ultrasonic ranging system and method for detecting the presence of and distance to a target using ultrasonic sound waves generated by an ultrasonic transducer with reduced audible noise. Electrical ultrasonic signal pulses are modulated according to a smooth modulation envelope and a transducer drive signal is generated from the modulated signal pulses. The transducer drive signal drives an ultrasonic transducer which generates ultrasonic sound waves for transmission in a desired path, and further receives ultrasonic sound waves reflected from targets in the transmission path. The received ultrasonic sound waves are converted to an electrical signal that is processed by a processor to provide time and distance information to the target. The distance information is computed by using a middle time value for the transmitted and received signals.