Abstract: The present invention discloses a method for uniformly coating metal nanoparticles without a carbon impurity on an oxide ceramic powder surface, which includes the steps of putting grinded and mixed a metal organic material and oxide ceramic powder into a rotational reaction chamber, then bubbling oxidizing gas under a rotational and heating condition to oxidize the metal organic material into a metal oxide, and finally bubbling reducing gas to reduce the metal oxide into nanoparticles in a metallic state, so as to implement the uniform coating of the nanoparticles in the metallic state, and avoid coarsening and growing problems of nanoparticles led by a long-term coating reaction under a high temperature. The present invention has a simple method and a short preparation period, and the metal nanoparticles prepared are uniformly dispersed and have wide application prospects in multiple fields like catalytic materials and conductive ceramics.

Abstract: A method for preparation of a high-density hexagonal boron nitride (hBN) ceramic material is disclosed. According to the method, the surface of hBN powder is coated with an evenly-dispersed SiO2 nanoparticle layer using tetraethyl orthosilicate as a precursor, and then the high-density hBN ceramic material is obtained by pressureless sintering. The relative density of the prepared hBN ceramic material is over 80%.

Abstract: A semiconductor structure includes a substrate and a plurality of sub-array structures disposed on the substrate. The sub-array structures separated from each other by a plurality of trenches. The semiconductor structure includes a three-dimensional array of memory cells. The memory cells include a plurality of cell groups disposed in the sub-array structures, respectively. The semiconductor structure further includes a plurality of support pillars and a plurality of conductive pillars disposed in the trenches. The support pillars and the conductive pillars in each of the trenches are alternately arranged in an extending direction of the trenches. The semiconductor structure further includes a plurality of conductive lines disposed in the trenches and on the support pillars and the conductive pillars. Each of the conductive lines connects the conductive pillars thereunder.

Abstract: An optical fiber strip has a stair-shaped base element, a cover element, an adapter and an internal optical fiber array. The stair-shaped base element has a plurality of holes and a first bearing surface. The holes are integrally formed and extends from the first receiving surface to a bottom surface of the stair-shaped base element. The cover element includes an internal curved space between the first curved part and second curved part. The internal optical fiber array is selectively and optically coupled to tan optical-electrical conversion unit via the holes. A curved portion of the internal optical fiber array is located in the internal curved space for changing direction of the internal optical fiber array.

Abstract: Apparatus and methods are provided to calibrate a closed-loop envelop tracking system for a power amplifier of a wireless transmitter using standardized modulation signals. In one novel aspect, a closed-loop adaptive method is used to track changes in PA nonlinearity due to environmental or circuitry changes during operating condition using standardized modulation signals. In one embodiment, the PA supply voltage compensation lookup table (LUT) and/or the phase compensation LUT is updated during normal operation to sustain good linearity and efficiency performance. In another novel aspect, the PA target response is adjusted in response to changes in PA-related system configuration, such as changes in PA bias settings, and/or indicators measured from the transmitter such as changes in impedance or temperature changes for the RF module or the PA module. The PA supply voltage compensation LUT and/or the phase LUT is updated accordingly upon adjustment of the PA target response.

Abstract: An optical fiber strip has a stair-shaped base element, a cover element, an adapter and an internal optical fiber array. The stair-shaped base element has a plurality of holes and a first bearing surface. The holes are integrally formed and extends from the first receiving surface to a bottom surface of the stair-shaped base element. The cover element includes an internal curved space between the first curved part and second curved part. The internal optical fiber array is selectively and optically coupled to tan optical-electrical conversion unit via the holes. A curved portion of the internal optical fiber array is located in the internal curved space for changing direction of the internal optical fiber array.

Abstract: A medical image modeling system including a processing device, a display device, and an input device is provided. The processing device is configured to execute an image processing module to generate three-dimensional bone model data based on medical image data of a biological bone tissue. The display device is configured to simultaneously display a medical image and a three-dimensional bone model in the same operation interface according to the medical image data and the three-dimensional bone model data. The input device is configured to receive a parameter instruction, so that the processing device edits the three-dimensional bone model according to the parameter instruction by the image processing module. A medical image modeling method is also provided.

Abstract: Provided is a power supply circuit for a wireless mobile device having a plurality of power amplification components. The power supply circuit includes: a first DC-DC converter, for providing at least one constant output voltage (which is provided to the power amplification components) and/or at least one DC intermediate voltage; a second DC-DC converter, for providing a DC component of at least one time-varying output voltage; and at least one linear amplifier. When the at least one linear amplifier receives the at least one DC intermediate voltage from the first DC-DC converter, the at least one linear amplifier provides at least one AC component of the at least one time-varying output voltage. The DC component and the at least one AC component of the at least one time-varying output voltage are combined into the at least one time-varying output voltage and provided to the power amplification components.

Abstract: Provided is a power supply circuit for a wireless mobile device having a plurality of power amplification components. The power supply circuit includes: a first DC-DC converter, for providing at least one constant output voltage (which is provided to the power amplification components) and/or at least one DC intermediate voltage; a second DC-DC converter, for providing a DC component of at least one time-varying output voltage; and at least one linear amplifier. When the at least one linear amplifier receives the at least one DC intermediate voltage from the first DC-DC converter, the at least one linear amplifier provides at least one AC component of the at least one time-varying output voltage. The DC component and the at least one AC component of the at least one time-varying output voltage are combined into the at least one time-varying output voltage and provided to the power amplification components.

Abstract: A radio frequency (RF) receiver includes a digital tuning engine; and I-path and Q-path analog filters, tuned by the digital tuning engine. The digital tuning engine gets an I/Q imbalance difference, and the digital tuning engines tunes the I-path analog filter and/or the Q-path analog filter based on the I/O imbalance difference.

Abstract: The present invention relates to a new zinc binding fusion protein that is a fusion protein of glutathione S-transferase (GST) and metallothionein (MT), to which zinc bind, providing an efficacy in preventing or treating a ROS-related disease and heavy metal poisoning.

Abstract: A communication unit comprises a decimator configured to sample a variable control signal and output a reduced bandwidth variable control signal; and a multi-level power supply, MLPS, comprising an input and an output, wherein the input is coupled to the decimator and configured to receive the reduced bandwidth variable control signal and, in response thereto, the output delivers multi-level output voltages to supply a power amplifier, PA, module.

Abstract: The present invention discloses a method for uniformly coating metal nanoparticles without a carbon impurity on an oxide ceramic powder surface, which includes the steps of putting grinded and mixed a metal organic material and oxide ceramic powder into a rotational reaction chamber, then bubbling oxidizing gas under a rotational and heating condition to oxidize the metal organic material into a metal oxide, and finally bubbling reducing gas to reduce the metal oxide into nanoparticles in a metallic state, so as to implement the uniform coating of the nanoparticles in the metallic state, and avoid coarsening and growing problems of nanoparticles led by a long-term coating reaction under a high temperature. The present invention has a simple method and a short preparation period, and the metal nanoparticles prepared are uniformly dispersed and have wide application prospects in multiple fields like catalytic materials and conductive ceramics.

Abstract: A method for preparing a titanium nitride-titanium diboride-cubic boron nitride composite material is disclosed. Titanium powder and cubic boron nitride raw powders are mixed by a planetary ball milling method, and then the titanium nitride-titanium diboride-cubic boron nitride composite material is prepared through the steps of wet mixing, drying, sieving, pre-sintering through a high-temperature vacuum furnace, cold isostatic press molding and high-temperature sintering.

Abstract: A method of calibrating an envelope tracking system for a supply voltage for a power amplifier module within a radio frequency (RF) transmitter of a wireless communication unit is described. The method comprising, within at least one signal processing module of the wireless communication unit, applying a training signal comprising an envelope that varies with time to an input of the RF transmitter, receiving at least an indication of instantaneous output signal values for the power amplifier module in response to the training signal, calculating instantaneous gain values based at least partly on the received output power values, and adjusting a mapping function between an instantaneous envelope of a waveform signal to be amplified by the power amplifier module and the power amplifier module supply voltage to achieve a power amplifier module gain, for example that is monotonically increasing as a function of power amplifier output power.

Abstract: A tungsten carbide-cubic boron nitride composite material and preparation method thereof mainly includes WC and cBN, wherein the WC powder is coated with Co nano-layer and the cBN powder is coated with SiO2 nano-layer, and hardness and toughness of the composition material can be improved by coating. The method for preparing a tungsten carbide-cubic boron nitride composite material adopts chemical vapor deposition method and high temperature sintering method. First nano-layers were coated on the surface of WC and cBN, and then the bulk materials can be obtained via high-temperature sintering.

Abstract: A communication unit comprises a decimator configured to sample a variable control signal and output a reduced bandwidth variable control signal; and a multi-level power supply, MLPS, comprising an input and an output, wherein the input is coupled to the decimator and configured to receive the reduced bandwidth variable control signal and, in response thereto, the output delivers multi-level output voltages to supply a power amplifier, PA, module.

Abstract: A communication unit comprises a radio frequency, RF, transmitter comprising: a power amplifier, PA, module; an envelope tracking system operably coupled to the PA module and arranged to variably control a supply voltage for the PA module; and a load control system operably coupled to an output of the PA module and arranged to control a power amplifier output load.

Abstract: A method for preparation of a high-density hexagonal boron nitride (hBN) ceramic material is disclosed. According to the method, the surface of hBN powder is coated with an evenly-dispersed SiO2 nanoparticle layer using tetraethyl orthosilicate as a precursor, and then the high-density hBN ceramic material is obtained by pressureless sintering. The relative density of the prepared hBN ceramic material is over 80%.

Abstract: A method for preparing a titanium nitride-titanium diboride-cubic boron nitride composite material is disclosed. Titanium powder and cubic boron nitride raw powders are mixed by a planetary ball milling method, and then the titanium nitride-titanium diboride-cubic boron nitride composite material is prepared through the steps of wet mixing, drying, sieving, pre-sintering through a high-temperature vacuum furnace, cold isostatic press molding and high-temperature sintering.