Abstract: A digital-to-analog converter for generating an analog output voltage in response to a digital value comprising a plurality of bits, the converter including: (i) a first switched resistor network having a first configuration and for converting a first input differential signal into a first analog output in response to a first set of bits in the plurality of bits; and (ii) a second switched resistor network, coupled to the first switched resistor network, having a second configuration, differing from the first configuration, and for converting a second input differential signal into a second analog output in response to a second set of bits in the plurality of bits.

Abstract: A display panel and a display device are provided. In the display panel, at least one odd-numbered thin film transistor is sequentially turned on to charge sub-pixels of a corresponding odd-numbered row before charging sub-pixels of any one of odd-numbered rows is finished, and at least one even-numbered thin film transistor is sequentially turned on to charge sub-pixels of a corresponding even-numbered row before charging sub-pixels of any one of even-numbered rows is finished, thereby saving the number of uses of data traces and thin film transistors, as well as enhancing the timeliness of data signal transmission.

Abstract: An image processing method includes: acquiring a standard image matched with an image processing model; determining light field variation parameters of a use environment of the image processing model based on the standard image; determining an image training sample set based on the light field variation parameters, the image training sample set including images of different light field backgrounds; training a correction network of the image processing model through the image training sample set to obtain a model updating parameter adapted to the correction network, and generating a trained image processing model based on the model updating parameter; acquiring a single image in the use environment, and performing prediction processing on the single image through the trained image processing model to obtain light field information corresponding to the single image; and correcting a light field of the single image based on the light field information.

Abstract: A multimerization delivery system that can be used to deliver a cargo molecule intracellularly. The multimerization delivery system can achieve high-efficiency endocytosis of a cargo molecule and high-efficiency release thereof from an endocytic vesicle, significantly improving the cytoplasmic delivery efficiency of the cargo molecule. Once the cargo molecule is available in the cytoplasm, the cargo molecule can play any role related thereto. The multimerization delivery system provides an effective means for affecting the biological mechanisms and pathways of cells, and can be used in various fields such as research, treatment, and diagnosis.

Abstract: The bicycle stem structure includes a mounting seat, a housing, and a vertical pipe. The housing includes a first connecting member extending toward a front wheel and a second connecting member extending toward a rear wheel. The vertical pipe is located in the first through hole. The vertical pipe is spaced apart from an inner wall of the first through hole and forms an annular cavity in communication with the second through hole. The vertical pipe is provided with a third through hole along an axial direction thereof. The mounting seat is connected to the vertical pipe and provided with at least two cable through holes through which cables are passed. At least one cable through hole is in communication with the third through hole, and at least one cable through hole is in communication with the annular cavity.

Abstract: The present application discloses a cartridge type mechanical sealing device for sealing liquid, the sealing device including a gland, a rotating ring adaptor assembly, a rotating ring, a stationary ring adaptor, a stationary ring, and a locking ring mounted around a rotating shaft.

Abstract: The present invention discloses a preparation process of food-grade potassium dihydrogen phosphate, wherein phosphoric acid prepared from wet-process phosphoric acid is used for the preparation of high-purity potassium dihydrogen phosphate. The preparation process of food-grade potassium dihydrogen phosphate provided in the present invention effectively reduces the preparation cost of the high-purity potassium dihydrogen phosphate and has the advantage of high process controllability, and by such a process, high-purity potassium dihydrogen phosphate crystals that meet the food-grade requirements can be produced, which crystals have uniform particle size distribution and comprises few fine powder, having a very high market value.

Abstract: The invention relates to a method for producing flexible polyurethane foam, flexible polyurethane foam produced by the method, and its use in household articles and automobile articles.

Abstract: A limiting structure of a bicycle includes a handlebar, a rotating member, a front fork, and a frame. The frame is provided with a mounting portion. The handlebar is partially accommodated at one end of the mounting portion, and the front fork is partially accommodated at the other end of the mounting portion. The rotating member is accommodated in the mounting portion. Two ends of the rotating member are movably connected to the front fork and the handlebar, respectively. An annular movable groove is formed between an inner wall of the mounting portion and the rotating member. The front fork is provided with a first limiting block, and the first limiting block is movably accommodated in the movable groove. The frame further includes a second limiting block, and the second limiting block is fixedly accommodated in the movable groove.

Abstract: Provided is a device linkage method, including that: a rule engine device receives a request message of adding a rule input resource instance from a client device; and the rule engine device establishes a connection relationship between the rule engine device and a rule input server device based on the request message of adding the rule input resource instance, the connection relationship being configured to implement device linkage.

Abstract: A doped phosphorus-sulfur iodide solid electrolyte, a preparation method therefor, and use thereof. The chemical formula of said solid electrolyte is Li6-xMxP1-xS5I, in which 0<x<0.8, and M is tungsten and/or molybdenum. Said method comprises: 1) mixing a lithium source, a phosphorus source, an iodine source, a sulfur source, and an M source in an inert atmosphere, and then ball-milling same to obtain a solid electrolyte precursor; and 2) sintering the solid electrolyte precursor obtained in step 1) in an inert atmosphere or in vacuum to obtain the doped phosphorus-sulfur iodide solid electrolyte.

Abstract: Disclosed are a method and apparatus for training an acoustic network model, and an electronic device, a readable storage medium, a computer program product and a program, wherein same belong to the technical field of data processing. The method comprises: acquiring a training sample for training of an acoustic network model, wherein the training sample includes one or more speech files (S101); performing peak detection on speech included in the speech file by using a BLSTM network, so as to divide letters included in the speech file on the basis of a detected peak, thereby forming segmented speech (S102); performing semantic prediction on the segmented speech on the basis of a preset CTC segmentation network to obtain a text prediction result (S103); and after the prediction result meets a preset performance requirement, stopping the training of the acoustic network model so as to perform text prediction on input speech by using the acoustic network model (S104).

Abstract: The present invention provides a common-mode rejection ratio and gain trimming circuit of differential amplifier, comprising: a first trimming unit and a second trimming unit coupled between an in-phase input voltage and a reference voltage, wherein the first trimming unit and the second trimming unit are coupled to a positive input terminal of the differential amplifier by means of tap switches; a third trimming unit and a fourth trimming unit coupled between tan inverting input voltage and an output terminal of the differential amplifier, wherein the third trimming unit and the fourth trimming unit are coupled to a negative input terminal of the differential amplifier by means of tap switches; wherein, the first trimming unit, the second trimming unit, the third trimming unit, and the fourth trimming unit comprise: a first trimming resistor string and a second trimming resistor string coupled in series; the first trimming resistor string is coupled in parallel with a first trimming auxiliary resistor string

Abstract: A circuit includes: a first electrical interface including a first pin, a resistor module, an alternating current signal source, a voltage detection module, and a controller. One end of the resistor module is electrically connected to the first pin. The alternating current signal source is electrically connected to the other end of the resistor module, and configured to generate an alternating current detection signal. The voltage detection module is connected to the first pin, and configured to detect a maximum voltage value and a minimum voltage value that are on the first pin within a period of the alternating current detection signal. The controller is separately connected to the alternating current signal source and the voltage detection module, and configured to, when a difference between the maximum voltage value and the minimum voltage value is less than a first threshold, determine that water enters the first electrical interface.

Abstract: A device is described that includes a carrier that has a plurality of light-emitting diode (LED) mounting areas. Each of the LED mounting areas includes a pair of contact pads, which are electrically coupled to the LED mounting area in a first subset of the plurality of LED mounting areas or electrically connected in series with a shunting element in the respective LED mounting area in a second subset of the plurality of LED mounting areas. In some embodiments, LEDs may be placed in the first subset of the plurality of LED mounting areas.

Abstract: Provided is a novel coronavirus vaccine using replication-deficient human type 5 adenovirus as a vector. The vaccine takes the replication-deficient human type 5 adenovirus that is lack of E1 and E3 in a combined mode as a vector, and HEK293 cells that integrate adenovirus E1 genes serve as a packaging cell line, and protective antigenic genes carried are optimized COVID-19 (SARS-CoV-2) S protein genes (Ad5-nCoV). The vaccine has good immunogenicity in both mouse and guinea pig models and can induce the body to produce a strong cellular and humoral immune responses in a short time. Research on the protective effect of hACE2 transgenic mice shows that 14 days after a single Ad5-nCoV immunization, the viral load in lung tissues can be significantly reduced. It shows that the vaccine has a good immune protection effect against COVID-19.

Abstract: A method for processing a semiconductor structure and a method for forming a word line structure are provided. The method for processing the semiconductor structure includes: providing a semiconductor structure including a groove and a metal layer located in the groove, where an edge position of a top surface of the metal layer is higher than a center position of the top surface of the metal layer; enabling the semiconductor structure to be in a rotating state; and performing at least one metal surface planarization process on the semiconductor structure, so that the top surface of the metal layer after being processed is more planar than the top surface of the metal layer before being processed. Each of the at least one metal surface planarization process includes: etching the top surface of the metal layer by a first reagent; and cleaning the semiconductor structure by a second reagent.

Abstract: A system for detecting Denial-of-Service (DoS) attacks on one or more user profiles collects a number of invalid sign-on attempts on the one or more user profiles during every time interval. The system determines a number of invalid sign-on attempts on every user profile since the start of the first time interval. The system detects a first DoS attack on a particular user profile if a first number of invalid sign-on attempts on the particular user profile exceeds a single-user profile. The system detects a second DoS attack on multiple user profiles during the first time interval if the increase in the total number of invalid sign-on attempts since the last time interval exceeds a scan-level threshold number. The system detects a third DoS attack on multiple user profiles if the total number of invalid sign-on attempts detected during combined time intervals exceeds a third threshold number.

Abstract: This invention provides compounds, compositions and methods for modulating the expression of human GST-? using RNA interference. The RNA interference molecules can be used in methods for preventing or treating diseases such as malignant tumor. Provided are a range of siRNA structures, having one or more of nucleotides being modified or chemically-modified. Advantageous structures include siRNAs with 2?-deoxy nucleotides located in the seed region, as well as other nucleotide modifications.