Abstract: Disclosed are a control method of an intelligent sterility test pump, a sterilization method and its application. The control method comprises steps: monitoring the real-time current of a DC drive motor through a current detection module, to adjust the rotating linear velocity of a peristaltic pump head (3) in real time; when the peristaltic pump head (3) is in a state of pushing a liquid to be tested, reducing the rotating linear velocity of the peristaltic pump head (3); and when the peristaltic pump head (3) is in an idling state, increasing the rotating linear velocity of the peristaltic pump head (3); the invention further provides a sterilization method comprising the control method of the intelligent sterility test pump; the disclosure also provides application of the sterilization method in preparation or detection of foods and medicines.

Abstract: The present invention provides an efficient ultrasonic phased array phase shift migration imaging method for the defect in a multi-layer structure, including the following steps: (1) transforming full matrix capture data of a multi-layer structure to a frequency-wavenumber domain by means of three-dimensional fast Fourier transform; (2) for any non-traversed layer in the multi-layer structure, extrapolating a surface wave field of the multi-layer structure to an upper interface of the non-traversed layer, to obtain wave field information of the non-traversed layer; (3) according to the obtained wave field information, performing focus imaging on the non-traversed layer in the frequency-wavenumber domain; and (4) repeating the steps (2) and (3), until all layers are traversed, to obtain an imaging result of the multi-layer structure.

Abstract: An in-situ evaluation method and system for loess collapsibility based on non-destructive time-domain reflection technology, includes: calculating loess dry density and mass water content; considering loess dry density, mass water content and basic physical property indicators, and evaluating loess collapsibility in situ through mathematical models. The loess collapsibility in-situ evaluation method based on the non-destructive time domain reflectometry technology of the present invention can not only realize whether the loess has collapsibility, but also has the potential to distinguish strong, medium and slight collapsibility.

Abstract: Disclosed are an X-ray imaging system and method, and the system comprises an X-ray source, a high-voltage generator, a collimator, a digital flat-panel detector, and a host computer; a position relationship between a projection area and a subject is visually displayed through a display screen; as an image frame on the screen is directly dragged to a corresponding position of an image of the subject presented on the screen or an area of interest is drawn, the collimator automatically drives a collimating sheet to move and enables the projection area to move to an observation position required by the subject, and information about the area of interest is transmitted to the detector as an input for selecting a response area of automatic exposure control (AEC). The collimator cooperates with digital automatic exposure control (DAEC), so that a strict requirement is no longer existent for patient positioning.

Abstract: The present invention provides a method for discovering a Bluetooth device. The method includes: receiving, by a second Bluetooth device, a first broadcast frame of a first Bluetooth device; determining, by the second Bluetooth device, whether the first broadcast frame includes first indication information; and if the first broadcast frame includes the first indication information, sending, by the second Bluetooth device, at least one second broadcast frame within a preset time period after receiving the first broadcast frame, where the second broadcast frame includes second indication information, and the second indication information is used to instruct a Bluetooth device receiving the second broadcast frame to exchange information with the second Bluetooth device.

Abstract: Disclosed are support-activators and catalyst compositions comprising the support-activators for polymerizing olefins in which the support-activator includes clay heteroadduct, prepare from a colloidal phyllosilicate such as a colloidal smectite clay, which is chemically-modified with a heterocoagulation agent. By limiting the amount of heterocoagulation reagent relative to the colloidal smectite clay as described herein, the smectite heteroadduct support-activator is a porous and amorphous solid which can be readily isolated from the resulting slurry by a conventional filtration process, and which can activate metallocenes and related catalysts toward olefin polymerization. Related compositions and processes are disclosed.

Abstract: Disclosed is a device for testing corrosion fatigue resistance on the basis of acoustic emission. The device includes: a main machine including a supporting frame and a tensile mechanism arranged on the supporting frame; a clamping mechanism including a first clamp and a second clamp that is arranged opposite the first clamp, where the first clamp and the second clamp are both connected to the tensile mechanism, the tensile mechanism is used for driving the first clamp and the second clamp to move close to or away from each other, the first clamp is provided with an accommodation cavity for accommodating a corrosive substance, the accommodation cavity is provided with an opening that is provided on the first clamp and close to one end of the second clamp, and the first clamp can place a test specimen in the accommodation cavity when fixing the test specimen.

Abstract: A video editing method, apparatus and storage medium are provided. The method includes obtaining an object, the object including one or more images; determining a content element of the object for video editing, the content element having a content type identifier; determining a material set identifier corresponding to the content type identifier according to a first behavior tree logic; determining a video editing material set corresponding to the material set identifier; and obtaining an edited video according to the content element and the video editing material set.

Abstract: A sensor device comprising: a lead frame; a first/second semiconductor die having a first/second sensor structure at a first/second sensor location, and a plurality of first/second bond pads electrically connected to the lead frame; the semiconductor dies having a square or rectangular shape with a geometric center; the sensor locations are offset from the geometrical centers; the second die is stacked on top of the first die, and is rotated by a non-zero angle and optionally also offset or shifted with respect to the first die, such that a perpendicular projection of the first and second sensor location coincide.

Abstract: The present invention provides a pyruvate-responsive biosensor and a construction method and use thereof. In the present invention, pyruvate-responsive biosensors with different dynamic ranges are successfully constructed by optimizing the PdhR binding sequence inserted on the P43 promoter and optimizing the insertion site, wherein the minimum increase in dynamic range is by 0.6 time, and the maximum increase is by 30.7 times. The pyruvate-responsive biosensors are useful in the precise control of the expression of each gene in the cell. Since pyruvate is a key metabolite of central carbon in the cells, these biosensors are capable of dynamically regulating the expression level of intracellular genes according to changes in the content of pyruvate in the cells, thereby achieving the dynamic control of intracellular metabolic flux. The pyruvate biosensor obtained in the present invention has a good specificity, and a response range to pyruvate of 10-35 nmol/g DCW.

Abstract: This invention discloses a double-liquid grouting slurry, its technology and application for super large diameter underwater shield engineering under high water pressure condition. The materials of slurry I are: 35-45 parts of cement clinker; 15-25 parts of slag; 24-35 parts of fly ash; 15-25 parts of steel slag; 5-15 parts of bentonite; 4-10 parts of limestone tailing; 0.3-2.0 parts of water reducing agent; 0.5-2.5 parts of cellulose. The materials of slurry II are: 0.2-3.8 parts of short-cut fiber; 96-99 parts of sodium silicate solution; 0.8-4.8 parts of viscous polymers. This invention generates the double-liquid slurry preparation process including crushing-screening-milling-group mixing-grouped mixing at different speeds, the volume ratio of slurry I and II is 1:1-10:1 during grouting, and the slurry is injected into the shield void through the six-point position technology at the shield tail and 3+2+1 segment splicing synchronous grouting techniques.

Abstract: The present disclosure provides a method and apparatus for failure detection and a PE device, and in particular, relates to the field of communication technology. The present disclosure is applied to the first PE device in EVPN. The first PE device is connected to the second PE device through the SRv6 PW tunnel.

Abstract: A synchronous single-liquid grouting slurry, its technology and application for large diameter shield engineering under water-rich, high-pressure and weak soil strata conditions, comprising raw materials: 1050-1200 parts of gold tailing, 420-480 parts of silicate cement clinker, 220-240 parts of fly ash, 45-120 parts of waste clay brick, 65-95 parts of slag, 25-45 parts of limestone tailing, 70-80 parts of steel slag, 30-45 parts of silica fume, 15-22 parts of desulfurized gypsum, and 9-15 parts of quick-setting and early-strength composite additive. The invention controls the d50, d85 and d95 of the material particles as 35-40, 42-48 and 50-55 ?m, respectively. Gold tailing with the particle size of 120-600 ?m being used as the fine aggregate, their volume fractions are 40-60%. The slurry production technique, comprising crushing-sieving-superfine ball milling-homogenization-particle size classification-variable speed mixing being developed.

Abstract: Disclosed is a device for testing corrosion fatigue resistance on the basis of acoustic emission. The device includes: a main machine including a supporting frame and a tensile mechanism arranged on the supporting frame; a clamping mechanism including a first clamp and a second clamp that is arranged opposite the first clamp, where the first clamp and the second clamp are both connected to the tensile mechanism, the tensile mechanism is used for driving the first clamp and the second clamp to move close to or away from each other, the first clamp is provided with an accommodation cavity for accommodating a corrosive substance, the accommodation cavity is provided with an opening that is provided on the first clamp and close to one end of the second clamp, and the first clamp can place a test specimen in the accommodation cavity when fixing the test specimen.

Abstract: A static random-access memory (SRAM) cell for high-speed content-addressable memory (CAM) and in-memory Boolean logic operations includes a standard 6T-SRAM and two additional PMOS access transistors, where read word lines of the two positive-channel metal oxide semiconductor (PMOS) access transistors P1 and P2 are RWLR and RWLL respectively, and under the control thereof, a differential read port RBL/RBL is formed. The SRAM cell is suitable for multi-row address selection, and typically applied to in-memory high-speed CAM and in-memory Boolean logic operations. Due to PMOS device characteristics, the structure design of the SRAM cell can avoid read disturbance generated by an in-memory SRAM, and ensure that the SRAM can perform in-memory CAM and in-memory Boolean logic operations stably at a high speed. In addition, this SRAM-based IMC solution supports commercial CMOS technology, and has an opportunity to leverage a large number of existing on-chip SRAM caches.

Abstract: This application is directed to transferring data over a data link coupled between two electronic devices. The data link includes a retimer having a full data path and a bit level data path that are coupled in parallel. The data link is initiated with the full data path and a first sequence of data packets is transferred via the full data path in accordance with a low data rate setting. While transferring the first sequence of data packets, the first sequence of data packets is manipulated in the full data path to establish a connection of the data link, and in response to establishing the connection of the data link, the data link is switched from the full data path to the bit level data path.

Abstract: A dexterous operation arm driven by modular joint time-sharing switching, the operation arm comprising a plurality of completely identical sub-sections, each sub-section comprising three parts: an external elbow assembly, an internal transmission assembly, and an elbow drive unit. The tail end of the operation arm can be connected to end effectors, such as claws, tweezers, scissors, and the like, to form a dexterous micro-device, which is mounted at the tail end of a minimally invasive surgical robotic system to assist in minimally invasive surgery. The operation arm modularizes operation arm joints, and separates the drive of each joint, which improves the flexibility of the operation arm, and can enable dexterously delivering an end effector to the vicinity of a lesion for surgery.

Abstract: An autoinducer-2 (AI-2) molecular response-based starting element and an Escherichia coli (E. coli) dynamic regulation system and method constructed thereby are provided. A cell density-dependent starting element PJ23119-LsrR-PlsrA based on an AI-2 molecular response is constructed. The element can be used to self-induce the expression of dCpf1, and crRNAs of different target genes are further assembled, such that the self-inducible element can be used for dCpf1-CRP to achieve the dynamic regulation of genes in a synthesis pathway. In the present disclosure, vectors pACYDuet-PJ23119-LsrR-PlsrA-dCpf1-CRP, pRSFDuet-GFP-mCherry, and pETDuet-crRNA can be constructed to simultaneously achieve the transcriptional activation and inhibition of different genes. The construction method of recombinant E. coli in the present disclosure is simple and has promising application prospects.