Sichuan University

Huawei Technologies Co., Limited

Chongqing Boe Optoelectronics Technology Co., Ltd.

Boe Technology Group Co., Ltd.

Hangzhou H3c Technologies Co., Ltd

Other

New H3c Technologies Co., Ltd.

Fremont Micro Devices Corporation

Hewlett Packard Enterprise Development LP

Hefei Xinsheng Optoelectronics Technology Co., Ltd.

Beijing Boe Technology Development Co., Ltd.

Beijing Zitiao Network Technology Co., Ltd.

Southwest Petroleum University

Boe Technology Groupco., Ltd.

Chengdu University of Technology

Jianfeng Liu

Lu Wang

Huining Xu

Heping Xie

Jianliang Pei

Wenxi Fu

Yang Ju

Xiaozhang Lei

Chunping Wang

Jianhui Deng

Yangmengdi Xu

Zhide Wu

Ni Yang

Zhiwei Zhou

Jin Xu

Hang Zou

Fei Wu

Qi Hu

Yunze Li

Yue Zhuo

Lina Ran

Jun Zheng

Ru Zhang

Xiangqing Chang

Tao Zheng

Feng Dai

Xiangchao Shi

Yan Li

Zhijian Qi

Zhonghua Gao

Yuquan Huang

Jun Wang

Xin Peng Liu

Jing Li

Zhi Hu Wang

Haitao Zhang

Yu Zhang

Yi Cheng Zhang

Ke Lin

Feng Gao

Yang Shi

Min Zhang

Tong Lin

Yong Xiang

Qiangxing Zhang

Dewen Zheng

Min Yao

Guosheng Ding

Dongjie Xue

Yufeng Wei

Lingzhi Xie

Dennis Sinitsky

Huayin Zhu

Jinbing Wei

Ruijie Pang

Jiangping Li

Yufei Wang

Yan Wan

Renjin Chen

Yu Bian

Qifeng Ma

Xiaomin Shi

Zhiguang Guo

Qi Zhao

Wenhua Xu

Jinxia Hu

Xun Shi

Hengyi Xu

Chao Ma

Meilin Li

Gang Chen

Hao Yu

Zhongfei Dong

Long Hu

Huanguo Zhang

Xiaoxuan Liu

Xuefang Chen

Da Zheng

Liyao Zhao

Yuming Wang

Dahu Tang

Zhijun Wu

Maoyong Zhou

Linrui Li

Fuzeng Pang

Jianping Zuo

Fubao Zhou

Yingke Liu

Yanan Gao

Leiyu Gao

Yuting Dai

Xiuping Chen

Shuanggui Li

Tongshan Wang

Qingling Li

Lili Chen

Xin Cai

Fujun Xue

Qiqi Wanyan

A clamping triaxial seepage and acoustic coupling rock tensile testing machine includes a sample and a scaffold-type tensile testing device. The scaffold-type tensile testing device has an upper chuck and a lower chuck. The upper chuck has an acoustic transmitting channel, one end of which communicating with the outside, and the other end of which having an acoustic transmitting probe. The lower chuck has an acoustic receiving channel, one end of which communicating with the outside, and the other end having acoustic receiving probe. An upper end face of the sample has with a seepage outflow hole while the upper chuck has a seepage outflow channel connected with the seepage outflow hole. A lower end face of the sample has a seepage inflow hole while the lower chuck has a seepage entry channel is connected with the seepage inflow hole.

Seepage and acoustic wave coupling system for rock tensile testing

A direct tensile and acoustic testing machine under rock seepage includes a sample and a support frame. A top of the support frame is fixed with a top plate, a bearing plate is provided above the top plate, the bearing plate is provided with a plurality of vertical force transferring rods, the force transferring rods vertically penetrate through the top plate and sliding fit with the top plate, lower ends of the force transferring rods are provided with a tensile base, a top of the tensile base is provided with a lower clamp holder, a bottom of the top plate is provided with an upper clamp holder, and a clamp center of the upper clamp holder overlaps with a clamp center of the lower clamp holder. An acoustic component and a seepage component are provided in the upper clamp holder and the lower clamp holder.

Elastic wave and tensile damage testing system of rock coupled with seepage in deep earth complex environment

An image management method includes: receiving information about a signer and information about a target image that are sent by a first terminal device, where the signer is an object designated to sign the target image; obtaining a signature file based on the information about the signer and the information about the target image; and if a first digest that is of the target image and is returned by a container platform matches a second digest obtained based on the signature file, indicating the container platform to allow use of the target image to start a container.

Image management method and apparatus

The present invention provides methods for giving and displaying a gift in a livestreaming room, and a related device. The method for giving a gift in a livestreaming room comprises: in response to a trigger operation for a target gift control, displaying a first window in a livestreaming room page; receiving first information inputted in the first window; and in response to a trigger operation for a gift-giving control, associating the first information with a target gift corresponding to the target gift control and then sending the first information and the target gift to a target receiving end.

Method for sending gift in live streaming room, method for displaying gift in live streaming room, and related device

Floor standing light

Disclosed is a soft-start circuit for power-up, which includes a reference value generation circuit, a protection threshold generation circuit and a control circuit. The reference value generation circuit outputs a reference value, which increases slowly, during a start-up process for power-up. The protection threshold generation circuit outputs a protection threshold, which increases slowly, during the start-up process for power-up. The control circuit controls an output voltage to increase slowly along with the reference value based on the reference value, during the start-up process for power-up, and to limit an output current based on the protection threshold to limit the output voltage, during the start-up process for power-up. In this way, even if the output current must operate at the peak current, a smoother current output is realized, and operation at the maximum peak current for a long-time during start-up is not allowed.

Soft-start circuit for power-up

A shear testing system and method of thermo-seepage-mechanical field and engineering disturbance coupling under deep and complex condition are provided. The shear testing system can be used in conjunction with an axial pressure application device to simplify the structure, save costs, and facilitate a triaxial confining pressure—temperature—axial pressure—torsional shear coupled test on a rock specimen. The shear testing system can achieve the following three purposes. First, the shear testing system can convert an axial pressure into a torsional shear force through a transmission mechanism of a power conversion assembly. Second, the shear testing system can apply an axial pressure to the rock specimen fixed between two specimen fixing heads, through a pressure shaft of an axial pressure mechanism. Third, the shear testing system can apply a triaxial confining pressure and a temperature field to the rock specimen.

Shear testing system of thermo-seepage-mechanical field and engineering disturbance coupling under deep and complex condition

The present disclosure discloses a method for calculating a safe drilling fluid density in a fractured formation, including the following steps: S, performing image processing to identify a downhole fracture; S, establishing three-dimensional (3D) geological models based on parameters of the downhole fracture, and establishing a drilling wellbore model based on a size and length of a wellbore; S, assigning the model with material parameters, boundary conditions, and upper and lower bounds of an initial drilling fluid density, and calculating accuracy; S, solving the 3D geological models using a 3-dimension distinct element code (3DEC) and determining stability of a well wall; S, determining upper and lower bounds of a drilling fluid density using dichotomy; S, repeating steps Sto S; and S, after set accuracy conditions are reached, saving and outputting the safe drilling fluid density.

Method for calculating safe drilling fluid density in fractured formation

A chip, a self-calibration circuit and method for chip parameter offset upon power-up are disclosed. The circuit includes a counting circuit, a calibration data latch circuit, a calibration data selection circuit and a parameter calibration circuit. The counting circuit outputs a sequentially scanned counting signal when receiving a valid enabling signal. The calibration data latch circuit latches the counting signal when receiving a valid latch signal. The calibration data selection circuit selects the counting signal latched by the calibration data latch circuit as a calibration signal when receiving the valid latch signal, otherwise selects the counting signal currently outputted as the calibration signal. The parameter calibration circuit implements a parameter calibration based on the calibration signal in a calibration mode, while outputs the valid latch signal when the parameter calibration satisfies a preset requirement. Thus, a parameter calibration with a higher accuracy and flexibility is realized in a cheaper way.

Chip, self-calibration circuit and method for chip parameter offset upon power-up

There is provided a touch panel, including: a substrate including a touch detection area and a fingerprint recognition area; plural touch detection units in the touch detection area, each touch detection unit including a touch detection electrode; plural fingerprint recognition units in the fingerprint recognition area, each fingerprint recognition unit including a fingerprint recognition electrode, and the fingerprint recognition electrode and the touch detection electrode being in a same layer; a signal wiring layer on a same side of the substrate as the touch detection electrode and the fingerprint recognition electrode and including plural first signal transmission lines and plural second signal transmission lines. The touch detection electrode is electrically coupled to and transmits a touch detection signal through a corresponding first signal transmission line, and the fingerprint recognition electrode is electrically coupled to and transmits a fingerprint recognition signal through a corresponding second signal transmission line.

Touch panel, fabricating method thereof and display device

A tempo-spatial evolution test system for rock breaking in deep and complex environment includes an acoustic emission sensor assembly and an acoustic emission amplifier assembly that are arranged on a rock mechanics test system. A triaxial cavity coupling bracket is arranged on an outer wall of the triaxial cavity and between two sets of acoustic emission sensor assemblies. The triaxial cavity coupling bracket includes a plate-shaped bracket, two sickle-shaped brackets, and at least three bracket bolts, which can be tightly wrapped on the outer wall of the triaxial cavity. A lateral side of the plate-shaped bracket vertically fixes two guide columns. The acoustic emission amplifier assembly is arranged between the two guide columns and is located above the plate-shaped bracket, and the acoustic emission amplifier assembly is connected to the acoustic emission sensor assembly through a signal line.

Tempo-spatial evolution test system for rock breaking in deep and complex environment

The disclosure relates to a hard-sealing soluble bridge plug, comprising a body made of soluble metal. The body comprises a wedge, a slip and a guide shoe which are connected from top to bottom in turn; at least one metal sealing ring is sleeved at the junction of the outer circumference of the wedge and the slip, and the metal sealing ring is made of soluble metal. The hard-sealing soluble bridge plug provided by the disclosure is applied to the field of fracturing and stimulation operation of an oil and gas well so that the hard-sealing soluble bridge plug is more convenient to store, more stable to seal and more firm to anchor, the setting success rate of the hard-sealing soluble bridge plug is effectively improved to better adapt to down hole environments. Furthermore, due to simple and compact structure, the hard-sealing soluble bridge plug is easy to machine and manufacture, and is effectively reduced in the cost of the soluble bridge plug.

Hard-sealing soluble bridge plug

A system for monitoring rock damage in deep engineering environment includes an acoustic emission sensor assembly and an acoustic emission amplifier assembly. The assemblies are mounted on a rock mechanics test system. The acoustic emission sensor clamp includes a coupling screw, as well as a clamp cover, a clamp cylinder, and a coupling panel threadedly connected in sequence. The acoustic emission amplifier assembly includes an acoustic emission amplifier, an upright column having a guide rail, a lifting support plate, and a support plate lifting oil cylinder. Additionally, an evaluation method based on acoustic emission tempo-spatial evolution laws is presented. According to the properties of acoustic emission, fractal characteristics of damage evolution processes of rock test pieces are analyzed and the relationship between stress, energy and fractal dimension in the whole process of tensile deformation damage of the rock test pieces is obtained.

Acoustic emission test equipment and analysis technology for rock breaking

The embodiments of the present disclosure disclose a shift register unit and a method for driving the same, a gate driving circuit, and a display apparatus. The shift register unit includes: an input circuit configured to output an input signal from an input signal terminal to a pull-up node; an output circuit configured to output a clock signal from a clock signal terminal to an output signal terminal under control of a potential at the pull-up node; a resetting and de-noising circuit configured to reset and de-noise the pull-up node and the output signal terminal under control of a potential at a pull-down node; and a pull-down node control circuit coupled to a first voltage terminal and the pull-down node, and configured to electrically couple the pull-down node to the first voltage terminal under control of the potential at the pull-down node.

Shift register unit and method for driving the same, gate driving circuit and display apparatus

A loading platform for a rock mechanics test system (MTS) to realize simple and reliable connection between a high temperature and high pressure force sensor in a triaxial chamber cavity and an upper solid rigid column. The loading platform for rock mechanics test includes a master rod, a secondary rod and a stop sleeve sleeved on the master rod; the stop sleeve is provided with two corbel structures; the secondary rod is composed of a secondary rod head body and a secondary rod body; a circular magnetic block is fixed on the secondary rod to adsorb a hole alignment sleeve sleeved on the secondary rod; and the hole alignment sleeve marked with a first scale line and a second scale line.

Loading platform for rock mechanics test

Growing community of inventors

Chengdu, China

Jianfeng Liu