Abstract: A joint cavity injection preparation is provided. The active ingredient of the joint cavity injection preparation is deacetylated xanthan gum (XG). The deacetylated XG has a molecular weight of 500,000 to 20,000,000. The joint cavity injection preparation is prepared from deacetylated xanthan gum (XG), which has higher biocompatibility and safe wide-dosage range than existing joint cavity injection preparations prepared from XG.

Abstract: A display device, a method for automatically adjusting brightness of a display screen and a terminal equipment are provided. An ambient light detection device is integrated in an operable region of the display device. The ambient light detection device includes a light blocking layer and a photoelectric sensor. The display device includes a display assembly and a control device. The display assembly includes a backpanel assembly, the light blocking layer being arranged in the backpanel assembly and provided with a light passing hole suitable for the passing of ambient light, the photoelectric sensor being disposed under the backpanel assembly; a display screen disposed over the backpanel assembly; a display chip connected to the display screen; and a control device connected to the photoelectric sensor. The display chip is connected to the control device, to adjust brightness of the display screen according to variance of the ambient light.

Abstract: A vacuum transistor includes a substrate and a first terminal formed on the substrate. A piezoelectric element has a second terminal formed on the piezoelectric element, wherein the piezoelectric element is provided over the first terminal to provide a gap between the first terminal and the second terminal. The gap is adjusted in accordance with an electrical field on the piezoelectric element.

Abstract: The invention relates to a method and device for predicting a volume median diameter (VMD) in an overlapped spray area of twin nozzles. Placing a single nozzle at different heights to determine a spray area; measuring all VMDs in the spray area to obtain first true measured values; dividing the first true measured values to construct a first calibration set and a first prediction set; establishing a polynomial fitting formula by a REGRESS function; placing twin nozzles at different heights and different nozzle spacing, and measuring VMDs in the overlapped spray area to obtain second true measured values; determining simulated values of the VMDs of first and second nozzles; dividing the simulated values of the VMDs and the second true measured values to construct a second calibration set and a second prediction set; quantitatively calibrating by using a radial basis function neural network (RBFNN) to obtain a prediction model; determining a VMD in the overlapped spray area of twin nozzles.

Abstract: A start-up circuit for a power converter includes a charging circuit that uses a DC bus voltage of the power converter to generate a charging current to charge an energy storage device to a selected voltage and an auxiliary power output circuit including a transformer primary side auxiliary winding. A control circuit controls one or more switches of the start-up circuit and one or more switches of the power converter primary side. The charging current provides power to the control circuit until the auxiliary power is established. The control circuit disables the start-up circuit when the auxiliary power output is established. The start-up circuit has very low standby power consumption and compact size, and is particularly suitable for power converter applications such as power adapters for portable electronic devices.

Abstract: The disclosure discloses an apparatus and a method for microbial cell counting, and belongs to the field of cell counting. In the present application, by converting a traditional automated intermittent counting process into a continuous counting process, the cell sap fixed in a blood cell plate in a traditional counter becomes the cell sap flowing in a microchannel, so as to prolong the cell detection time and distance. The size of the microchannel is slightly greater than the diameter of microbial cells, so as to ensure that the cells flow through the cross section of the microchannel one by one. At the same time, since the diameter of the counterbores communicated by the microchannel is slightly greater than the width of the microchannel, the flow rate of the cell sap slows down when the cell sap flows to the counterbores.

Abstract: The techniques described herein provide tools that summarize a dataset by creating a final set of segments that, when visually presented via a histogram or other data presentation tool, show the distribution of at least a portion of the data. To create the final set of segments, the techniques described herein may collect or receive a dataset with distinct values, and divide the dataset into a number of segments that is less than or equal to a segment presentation threshold (e.g., ten segments). After creating the final set of segments, the techniques may configure and/or present data visualizations, such as histograms, for the created segments so that an observer is provided with a good viewing experience.

Abstract: Degradation of the reflectivity of one or more reflective optical elements in a system (SO) for generating EUV radiation is reduced by the controlled introduction of a gas into a vacuum chamber (26) containing the optical element. The gas may be added to the flow of another gas such as hydrogen or alternated with the introduction of hydrogen radicals.

Abstract: A metal-oxide-semiconductor field-effect transistor (MOSFET) device is provided. The device comprising: a substrate; an oxide layer on the substrate; a gate on the oxide layer; a source and a drain on the substrate, wherein the source and the drain are doped with a dopant of a first type; and a cold source coupled to the source, wherein the cold source comprises a junction between a semiconductor doped with a dopant of a second type, and a material selected from the group consisting of metal and semimetal.

Abstract: An imaging device for imaging of a local area surrounding the imaging device. The imaging device includes a lens assembly, a filtering element and a detector. The lens assembly is configured to receive light from a local area surrounding the imaging device and to direct at least a portion of the received light to the detector. The filtering element is placed in the imaging device within the lens assembly such that light is incident at a surface of the filtering element within a range of angles determined by a design range of angles at which the filtering element is designed to filter light. The detector is configured to capture image(s) of the local area including the filtered light. The imaging device can be integrated into a depth camera assembly for determining depth information of object(s) in the local area based on the captured image(s).

Abstract: A grinding and polishing device includes a main body, a grinding disk, a sample disk, a first console, and a second console. The main body includes a support table and a support column. The support table is coupled to the support column. The grinding disk is fixed on the support table and includes a polishing surface. The sample disk is fixed on the support column and configured to hold a preform. The first console is electrically coupled to the sample disk and used for controlling a distance between the preform held by the sample disk and the grinding disk. The second console is electrically coupled to the grinding disk and used for controlling a working state of the grinding disk for grinding and polishing the preform.

Abstract: A gallium nitride (GaN) semiconductor device has first and second electrodes connected to a top metal layer disposed in complementary first and second irregular shapes, each irregular shape including a wide connection area at a first end, a tapered area, and a narrow area at a second end. The first and second irregular shapes are arranged adjacent each other along complementary edges such that a gap between the complementary edges is of substantially constant width. The first and second wide connection areas include pads for wire bond or land grid array electrical connections to external circuitry. The first and second irregular shapes for source and drain metal of a field effect transistor (FET) or high electron mobility transistor (HEMT) allows the width of the gate finger to be short so that electrical current injected from the gate can reach all portions of the gate fingers efficiently during high frequency switching, making the topology suitable for high voltage power devices.

Abstract: A multi-phase LLC power converter comprises a plurality of LLC phases each including a resonant tank and a switching stage. The resonant tank includes a resonant inductor, a resonant capacitor, and a parallel inductance. The switching stage switches an input power at an operating frequency to apply a switched power to the resonant tank, with the switched power approximating an alternating current (AC) waveform having a switching frequency. A secondary-side controller varies the switching frequency to control an output voltage of the multi-phase LLC power converter. A primary-side controller measures primary-side currents, calculates an initial switch-controlled capacitor (SCC) conduction phase angle for each of the LLC phases, and operates an SCC switch in accordance with an SCC conduction phase angle to adjust the capacitance of the resonant capacitor of an LLC phase to cause each of the LLC phases to have equal resonant frequencies.

Abstract: The present disclosure provides methods, systems, and non-transitory computer readable media for optimizing garbage collection operations. An exemplary method comprises receiving an update operation on data to be stored in a host-managed drive in a data storage system; inserting the update operation in a local storage of a host of the data storage system; marking one or more obsolete versions of the data in the local storage; and performing, by a translation layer corresponding to the host-managed drive, a garbage collection operation on the host-managed drive, wherein the garbage collection operation removes the one or more obsolete versions of the data marked in the local storage according to the update operation, and the translation layer comprises address mapping information between the host and the host-managed drive.

Abstract: An LLC power converter comprises a switching stage and a resonant tank, the switching stage configured to switch an input power at a switching frequency to apply a switched power to the resonant tank, and the resonant tank includes a resonant inductor, a resonant capacitor, and a parallel inductance. A transformer has a primary winding connected to the resonant tank and a secondary winding. A synchronous rectifier (SR) switch is configured to selectively switch current from the secondary winding to supply a rectified current to a load. An RC filter includes a filter capacitor and a filter resistor connected across the SR switch, with the filter capacitor defining a filter capacitor voltage thereacross. A rectifier driver is configured to drive the SR switch to a conductive state in response to the filter capacitor voltage being less than a threshold value.

Abstract: The present application relates to the field of medicine, and relates to crystals of quinoline derivatives, and in particular, to crystals of a quinoline derivative anhydride and a solvate, as well as a method for preparing the crystals, pharmaceutical compositions containing the crystals, and a use thereof in the field of medicine. The present application further provides a preparation method therefor, which has a high yield, has mild crystallization conditions, is suitable for industrial production, and may better meet the needs of the pharmaceutical industry.

Abstract: An inductor-inductor-capacitor (EEC) power converter with high efficiency for Electric Vehicle (EV) on-board low voltage DC-DC chargers (LDC) is disclosed. The converter includes a switching bridge with a plurality of bridge switches and configured to generate an output from a direct current input voltage. An EEC tank circuit is coupled to the switching bridge and includes a resonant inductor and a resonant capacitor and a parallel inductor connected between the resonant inductor and the resonant capacitor. The tank circuit is configured to output a resonant sinusoidal current from the output of the switching bridge. At least one transformer has at least one primary winding in parallel with the parallel inductor of the inductor-inductor-capacitor tank circuit and at least one secondary winding. At least one rectifier is coupled to the at least one secondary winding and is configured to output a rectified alternating current.

Abstract: The present application falls within the field of medicinal chemistry, relates to the crystalline of a compound as a c-Met kinase inhibitor, and specifically relates to the crystalline of N-(4-((7-((1-(cyclopentylamino)cyclopropyl)methoxy)-6-methoxyquinolin-4-yl)oxy)-3-fluorophenyl)-N-(4-fluorophenyl)cyclopropane-1,1-dicarboxamide, and a preparation method therefor, a crystalline composition thereof, and a pharmaceutical composition thereof, as well as the use of the crystalline for treating diseases associated with the inhibition of growth factor receptor protein tyrosine kinase activity. The crystalline of the present application has excellent properties in at least one of the following aspects: pharmacokinetics, bioavailability, hygroscopicity, stability, solubility, purity, ease of preparation, etc.

Abstract: A casting device of a large non-ferrous metal thin-walled structural component. A liquid outlet of the casting device is communicated with a casting sand box. The casting device comprises an L-shaped liquid storage cylinder, a pressure supplying cylinder, and a crystallization treater. Protective gas with the first gas pressure can be inflated into the top of the L-shaped liquid storage cylinder. The pressure supplying cylinder and the L-shaped liquid storage cylinder are integrally connected to form a U-shaped tube connector. Protective gas with the second gas pressure can be inflated into the top of the pressure supplying cylinder. A liquid inlet of the crystallization treater is communicated with the pressure supplying cylinder while a liquid outlet is communicated with the pouring system and the mold cavity. The crystallization treater is provided with a grain refining mechanism.

Abstract: Embodiments of this application provide a time synchronization method, a service board, and a network device. After clock board times between service boards are synchronized, the service board obtains a CPU time and the clock board time of the service board according to a preset periodicity, and makes a record; when performing CPU time synchronization between the service boards, the service board obtains a current CPU time of the service board, and calculates a synchronization time of the CPU based on the current CPU time, and a last recorded CPU time and clock board time; and adjusts the CPU time of the service board to the synchronization time. After the clock board times between the service boards that need to implement CPU high-precision time synchronization are synchronized by using a high-precision time synchronization protocol, the CPU time of each service board is adjusted to a corresponding synchronization time.