Abstract:
A molding device for pre-shaped plastic films has a body, a platform and a driving shaft. The body can be rotatably mounted in a pre-shape machine and has an annular side surface and a top opening. The platform is detachably mounted in the top opening of the body. The driving shaft is mounted longitudinally through the body, movably extends longitudinally relative to the body and has an end attached securely to the platform to selectively raise the platform to lift a pre-shaped plastic film from the body. Accordingly, the plastic films can easily be separated from the platform, and to manually separate the plastic film from the molding device is unnecessary to prevent the plastic films from being damaged.
Abstract:
A method for implementing Polarization Division Multiplexing Binary Phase Shift Keying (PDM-BPSK) modulation and Quadrature Phase Shift Keying (QPSK) modulation in a compatible manner includes: dividing a direct current (DC) light into a first channel of light and a second channel of light with the same power; separately performing optoelectrical modulation on the first channel of light and the second channel of light and correspondingly outputting a first optical signal and a second optical signal in a Binary Phase Shift Keying (BPSK) format; performing polarization state control on the first optical signal; performing a phase shift on the first optical signal or the second optical signal; and performing optical signal combination with the polarization state preserved on the first optical signal and the second optical signal after the polarization state control and the phase shift, and outputting a PDM-BPSK modulation optical signal or a QPSK modulation optical signal.
Abstract:
A radio frequency (RF) transmitter architecture includes at least one digital signal processing module. The at least one digital signal processing module is configurable to operate in at least a first mode wherein the at least one digital signal processing module is arranged to receive a digital input signal, select, from a reduced set of digital power amplifier (DPA) control values, a plurality of DPA control values based at least partly on the received digital input signal, perform interpolation of the plurality of selected DPA control values to determine a DPA control value from a non-reduced set of DPA control values representative of the received digital input signal, and output to at least one DPA component the determined DPA control value representative of the received digital input signal.
Abstract:
The present invention provides a composition having anti-Helicobacter pylori activity and the composition contains ovatodiolide with effective dosage to inhibit Helicobacter pylori growth or ovatodiolide related substances and its acceptable carrier. The present invention also provides a method for treating ovatodiolide to produce a composition for killing Helicobacter pylori. The present invention also provides an application of ovatodiolide to produce pharmaceuticals for curing gastric ulcers. The ovatodiolide isolated from natural material extract has been confirmed able to inhibit the growth of Helicobacter pylori or to kill Helicobacter pylori. The ovatodiolide can be used in various industries related to the inhibiting or killing of Helicobacter pylori with few side effects and is easy to obtain with low cost.
Abstract:
An automatic gathering pre-shape machine has a main body and a gathering device. The main body can make plastic films formed into a circular shape with an annular flange formed around a top edge of the film. The gathering device allows a pre-shaped plastic film be blown toward an outer end of the barrel to hit a block wall and drop and mount around a tip portion of corresponding shelf to be gathered. Consequently, the plastic film may easily and automatically be gathered from the main body. Therefore, the plastic films can be kept from being damaged and the pre-shaping process is accelerated.
Abstract:
A molding device for pre-shaped plastic films has a body, a platform and a driving shaft. The body can be rotatably mounted in a pre-shape machine and has an annular side surface and a top opening. The platform is detachably mounted in the top opening of the body. The driving shaft is mounted longitudinally through the body, movably extends longitudinally relative to the body and has an end attached securely to the platform to selectively raise the platform to lift a pre-shaped plastic film from the body. Accordingly, the plastic films can easily be separated from the platform, and to manually separate the plastic film from the molding device is unnecessary to prevent the plastic films from being damaged.
Abstract:
A method and apparatus are provided for determining the first and second order polarization mode dispersion (PMD) vectors of an optical device, such as a single mode optical fiber, using only a single input polarization state. This is achieved by passing light beams having a fixed polarization state and frequencies that vary over a range through the optical device that is being tested. The output polarization states of the light beams that have passed through the optical device are measured, and used to form a curve in Stokes space on a Poincare sphere. The shape of this curve is used to approximate the first and second order (and possibly higher order) PMD vectors, using formulas based on differential geometry.
Abstract:
A system for testing RFID devices is introduced. The system includes a carrier plate configured for carrying an RFID device, a cable configured for supporting the carrier plate, a pulley apparatus configured for transporting the carrier plate along the cable, and a controller configured for adjusting test parameters in testing the RFID device.
Abstract:
A sun gear shell assembly includes a cylindrical shell body formed by cold-rolling a low carbon steel, and a neck section having a protruding neck collar, formed by heat drawing and machining a middle carbon steel. A wall thickness of the shell body is increased for added strength. The neck has a 30 degree chamfer to prevent failures at the neck section, and the neck section is then welded to the shell body so that the sun gear shell becomes one piece. A plurality of holes are disposed in the neck section encircling the neck collar. An injection molded plastic washer including a plurality of tabs disposed on one side surface, has the tabs inserted into holes formed in the neck section to form the completed sun gear shell assembly.
Abstract:
A radio frequency (RF) transmitter has at least one digital signal processing module and at least one power amplifier module. The digital signal processing module includes at least one digital pre-distortion component arranged to receive at least one complex input signal, perform two-dimensional non-uniform mapping of the complex input signal to a first, in-phase, digital pre-distortion control word and a further, quadrature, digital pre-distortion control word, and output the in-phase and quadrature pre-distortion digital control words. The power amplifier module includes a first, in-phase, array of switch-mode power cells and at least one further, quadrature, array of switch-mode power cells. The two-dimensional non-uniform mapping has a pre-distortion profile at least partly based on an input/output relationship for the power amplifier module arranged to generate an analog RF signal based at least partly on the in-phase and quadrature digital pre-distortion control words.