Abstract: Disclosure includes systems, methods and devices to program a memory device, involving a first and a second programming operations on a memory cell of the memory device. In the first programming operation, the memory cell is programmed into an intermediate state. In the second programming operation, the memory cell is programmed from the intermediate state into a target state. The first programming operation includes providing a bias voltage to a bit line coupled to the memory cell and providing a programming voltage to a word line coupled to the memory cell. An amplitude of the bias voltage provided to the bit line depends on the intermediate state or the target state the memory cell to be programmed into. Accordingly, no verification operation need to be performed on the memory cell in the first programming operation.

Abstract: A display substrate and an electronic apparatus are provided. The display substrate includes a base substrate, and a dielectric layer, a first and a second electrode layer and a pixel defining layer thereon. The first electrode layer includes a first electrode and a second electrode spaced with a gap. The dielectric layer includes a first groove exposed by the gap; the second electrode layer includes a concave structure corresponding to the first groove; the pixel defining layer covers the first groove to form a second groove; the display substrate has a cross section, and the concave structure includes a first and a second concave point within the cross section; within the cross section, a distance between a first side surface of the second groove and a first electrode edge of the first electrode is greater than a distance between the first concave point and the first side surface.

Abstract: The present disclosure relates to methods and devices for data transmission. The methods is implemented on a data processing unit (220) of a computed tomography (CT) device, the data processing unit (220) is communicatively connected to a plurality of first communication links and at least one second communication link. The method comprises: determining, whether a first communication link group includes at least one failed communication link, the first communication link group including the plurality of first communication links; in response to determining that the first communication link group includes at least one failed communication link, selecting, from the at least one second communication link, at least one target communication link matching the at least one failed communication link; and adjusting the first communication link group to a second communication link group, and the second communication link group including at least the at least one target communication link.

Abstract: A method for preparing heat-conductive cement slurry for well cementation includes the following steps: S1, uniformly mixing sodium 1-butanesulfonate, sodium dodecyl diphenyl ether disulfonate and polyvinylpyrrolidone to obtain an admixture; S2, dissolving the admixture in deionized water and stirring to obtain a dispersant solution; S3, adding graphite to the dispersant solution and stirring to obtain a graphite dispersion; S4, stirring cement and deionized water in a slurry cup to obtain cement slurry; and S5, mixing and stirring the graphite dispersion and the cement slurry to obtain the heat-conductive cement slurry. The heat-conductive cement slurry can effectively improve the heat conductivity coefficient of set cement, and significantly improve the heat conductivity of the set cement, and has a broad market application prospect.

Abstract: A controllable downhole drilling and completion tool separating device and their method of use are provided. The device includes an upper mandrel connector, an outer sleeve, a claw clamp sleeve, a claw clamp locking ring, a mandrel sleeve, a lower connector, a piston ring and a pressure bearing ball. The upper end of the lower connector is on the outer side of the upper connector in a sleeving mode. A first annular cavity is between the lower connector and the upper connector. The piston ring is on the outer side of the upper connector in a sleeving mode and located in the first annular cavity. The claw clamp sleeve and the outer sleeve are sequentially arranged on the outer side of the upper connector in a sleeving mode. A second annular cavity is communicated with the first annular cavity and formed between the claw clamp sleeve and the upper connector.

Abstract: A material management method applied to a battery production line includes controlling, after a plurality of battery cells placed on a plurality of stations reach designated code scanning positions, a plurality of blocking devices to work in a first working state according to a predetermined sequence, thereby blocking identifications of the battery cells on the corresponding stations, acquiring code scanning results of a plurality of code scanning devices corresponding to the blocking devices for the identifications, respectively, when the blocking devices work in the first working state, and determining, according to the code scanning results, whether a binding relationship between the code scanning devices and the stations is abnormal.

Abstract: A BTA drilling quick-stop device (QSD) and a method, wherein the BTA drilling QSD includes a base. The base includes a hollow cavity. A side portion of the base has an opening communicating with the hollow cavity. The opening is closed by a through cover. A horizontally movable fixture is disposed in the hollow cavity. A stopper is disposed at a top portion of the base. A bottom portion of the stopper is disposed lower than a top portion of the fixture to stop the fixture from moving during processing. An elastic element is disposed between the through cover and a side portion of the fixture to push the fixture to move after processing.

Abstract: The present invention provides a multimass MEMS gyroscope featuring an orthogonal arrangement, which comprises an anchor point unit, a sensing unit and a driving unit; the anchor point unit comprises a central anchor point subunit located at the center of a rectangle and four corner anchor points located at the four corners of the rectangle respectively; the sensing unit comprises four detection mass blocks each of which has a frame structure and is elastically connected between the central anchor point subunit and the corresponding corner anchor point, receding spaces being formed between the detection mass blocks, and four detection decoupling parts; and the driving unit comprises four driving mass blocks, and driving decoupling parts. The gyroscope can improve the arrangement area of transducers and reduce the mass of the detection mass blocks to improve the Coriolis gain, thereby improving the mechanical sensitivity of the gyroscope.

Abstract: A welding clamp for use in battery manufacturing is described. The welding clamp includes a plurality of clamping portions used to fit and clamp a case of a battery cell, the clamping portion includes a body portion and a connecting portion, and the connecting portion is detachably connected to the body portion; and a wear-resistant layer is connected to a surface of the connecting portion facing the case. In the process of welding the case and the end cover of the battery cell, through fitting and clamping the case by the clamping portion of the welding clamp, the clamping portion can play a position-limit role to the wall of the case to relieve the deformation of the case during the welding process, thereby improving the welding quality of the case and the end cover and thus improving the production quality of the battery cell.

Abstract: The present disclosure provides a kit and method for constructing a long-acting depression animal model. The present disclosure adopts Bacille Calmette-Guerin (BCG) (or Mycobacterium bovis (M bovis)) and low-dose pertussis toxin (PTX) for combined induction, which greatly reduces modeling cost. A mouse model constructed by the method of the present disclosure can clearly distinguish a time interval of pathological behaviors from a time interval of depression-like behaviors and has prominent face validity and predictive validity. The method of the present disclosure is simple and convenient and does not require a large number of tedious daily operations as the depression model construction by chronic unpredictable stress, chronic restraint stress, social defeat, mother-child separation, or the like. The mouse model of the present disclosure can provide a valuable long-term intervention window for research on antidepressant therapy.

Abstract: A welding device includes a laser welding head and a cooling mechanism. The laser welding head is provided with a channel for laser to pass through, and the cooling device is arranged on a side wall of the laser welding head and configured to cool the laser welding head.

Abstract: The present invention provides a capacitive micromechanical acceleromete. The capacitive micromechanical acceleromete includes a base with anchor points, at least one detection structure pair arranged on one side of the base and elastically connected to the anchor points, and a detection electrode spaced apart from each detection structure pair. Each detection structure pair includes two seesaw structures elastically connected to the base respectively. The seesaw structures are asymmetric about a rotation axis where the anchor points are located; asymmetric portions of the two seesaw structures are reversed and parallel. In a detection modality, changing directions of spacings formed between the two seesaw structures and the detection electrode are opposite. The capacitive micromechanical acceleromete can reduce the impact of the noise of the angular acceleration of the external rotation or the stress and other external factors on the detection of the accelerometer, and improving the detection accuracy.

Abstract: Provided is a fully decoupled MEMS gyroscope, including an anchor point unit, a sensing unit elastically connected to the anchor point unit, and a driving unit configured to drive the sensing unit to move. The anchor point unit includes a center anchor point subunit located at a center of a rectangle and four side anchor points. The driving unit includes four driving members located on four sides of the rectangle. The sensing unit includes two X mass blocks symmetrically arranged in two avoiding intervals, two Y mass blocks symmetrically arranged in the other two avoiding intervals, four Z mass blocks respectively located at an outer side of each driving member, and four Z detection decoupling members respectively located at an outer side of each Z mass block. The X mass blocks and the Y mass blocks are respectively connected to each side anchor point.

Abstract: A SOI wafer is disclosed. The SOI wafer may be characterized by surface roughness of a top silicon layer of the SOI wafer is less than 4 ?, thickness uniformity of the top silicon layer is within ±1%, and a total number of particles on a surface of the top silicon layer of the SOI wafer, measured with setting of 37 nm of SPx detection threshold, is less than 100.