Chinese Academy of Sciences

Baidu USA LLC

Beijing Microlive Vision Technology Co., Ltd

Meteorological Observation Centre of China Meteorological Administration

Leland Stanford Junior University

Lenovo (beijing) Limited

Beijing Baidu Netcom Science and Technology Co., Ltd.

Beijing Lenovo Software Ltd.

Bgi-shenzhen Co., Limited

Beijing Aerospace Propulsion Institute

Beijing Aerospace Petrochemical Technology & Equipment Engineering Corporation Limited

China Meteorological Administration Meteorological Observation Centre

China Meteorological Administration Meteorological Observation Center

Xu Han

Yu Yang

Yonghai Jiang

Yan Wang

Jie Liu

Jiang Wang

Hualiang Jiang

Beidou Xi

Hu Tiger Chen

Kaixian Chen

Fei Zhao

Xinying Lian

Fu Xia

Xiaopeng Wang

Bryan Catanzaro

Pingfei Fu

Zhenyao Zhu

Christopher Fougner

Chong Wang

Hua Cai

Jing Zhao

Chen Li

Jun Zhan

Ryan Prenger

Sanjeev Satheesh

Jesse Engel

Erich Elsen

Shubhabrata Sengupta

Jianqiang Wang

Jia Qu

Michael David McGehee

Xiuqing Zhang

Jason T Bloking

Yonghua Chen

Kaizhong Ding

Peng Liu

Chenglin Wu

Yingchun Chen

Jianbing Lu

Haihe Liang

Zhichao Bu

Nan Shao

Yubao Chen

Yuchun Gao

Changxing Li

Yongfeng Jia

Huan Huan

Awni Hannun

Xiangjian Xu

Yiping Wang

Mike Chrzanowski

Xuebing Peng

Hong Liu

Dario Amodei

Jingdong Chen

Dani Yogatama

Haiting Wang

Zhifei Ma

Yaojiang Du

Zhiqiang Sun

Jianghua Wei

Hao Shen

Xin Mao

Long Meng

Xiaodong Zheng

Houchang Lv

Daxi Du

Mingzhi Ye

Xueguang Hu

Zhongsheng Sun

Xincheng Wang

Alan Sellinger

Halting Wang

Cong Xi

A solid target system for the radionuclide preparation, including a cassette, an ejection sub-system, a laser radar positioning sub-system, a cooling sub-system and a control cabinet. The cassette includes a solid target component for the nuclide preparation and a shielding box. The ejection sub-system is configured to eject the cassette to a recovery hole after the nuclide preparation is completed. The laser radar positioning sub-system is arranged above the ejection sub-system, and is electrically connected to the control cabinet. Both sides of the cassette are each provided with the cooling sub-system for cooling down the solid target component. The control cabinet is electrically connected to a direct-current servo motor for controlling an operating state thereof.

Solid target system for radionuclide preparation

The present disclosure relates to a dual-polarized phased array antenna and a dual-polarized phased array weather radar. According to the dual-polarized phased array antenna, a plurality of dual-polarized row feeds are arranged on a horizontal cylindrical support surface to form a dual-polarized antenna in a horizontal cylindrical shape. This allows two polarized signals in a horizontal direction and a vertical direction to be simultaneously received and transmitted, and ensures digital multi-beam signals with constant beam bandwidth, antenna gain, and dual polarization performance. The dual-polarized phased array weather radar provided in the present disclosure uses the formed dual-polarized microstrip patch antenna or a dual-polarized waveguide slot antenna in the horizontal cylindrical shape. This can ensure consistency of weather detected at different scan angles, and improve the accuracy of weather target 3D construction. In addition, this can simplify the calibration requirement of an existing phased array weather radar.

Dual-polarized phased array antenna and dual-polarized phased array weather radar

The present disclosure relates to spherical dual-polarization phased array weather radar. The spherical dual-polarization phased array weather radar comprises a spherical crown phased array antenna module, a digital transceiver module and a signal processing module, wherein the spherical crown phased array antenna module comprises a spherical support frame and a plurality of dual-polarization micro-strip radiation units; the dual-polarized micro-strip radiation units are tightly arranged on the spherical support frame; the spherical crown phased array antenna module is used for detecting weather; wireless transmission is carried out between the digital transceiver module and the spherical crown phased array antenna module; the digital transceiver module is used for generating a frequency modulation signal or a phase coding signal required for detecting meteorological targets and receiving an echo signal reflected by the target; and the signal processing module is connected with the digital transceiver module.

Spherical dual-polarization phased array weather radar

Phased-array radar

Disclosed is a video acquisition method. The method includes acquiring at least two existing video segments selected by a user through a video selection interface, where the video selection interface is an interface which is switched from a video capture interface or a detail interface; and synthesizing the at least two existing video segments into a target video that has a duration less than or equal to a preset video duration based on the preset video duration. Further disclosed are a video acquisition device, a terminal and a storage medium.

Video acquisition method and device, terminal and medium

An in-situ reagents injection system comprises a compressed air storage tank, a remediation reagents storage tank, an injection adjusting valve, an injection pipe, an upper sealing device and a lower sealing device. When the reagents injection is carried out, the compressed air is injected before the remediation reagents is injected, the porosity of the aquifer medium is increased by utilizing the air pressure expansion technology to form a relatively uniform dominant channel, and the remediation reagents is injected to realize uniform and efficient conveying of the reagents. The in-situ reagents injection system and method can make the homogeneous and efficient conveying of the remediation reagents, and ensure the full utilization of the remediation reagents, with low energy consumption of injection equipment, simple process, and flexible operation. The injection is performed in sections from top to bottom according to the steps to improve the in-situ reagents injection efficiency and remediation efficiency.

In-situ reagents injection system and method

A medium material for removing phenol contamination from groundwater, a method of producing the same, and use of the same id disclosed. In at least some embodiments, the medium material is a granular material which has an average particle diameter of 0.5-1.5 cm and is formed from a bacteria-entrapping solution, a manganese sand filter material, modified bentonite, and biochar at a mass ratio of 1:0.2-0.4:0.2-0.4:0.1-0.2 by a series of processes including strain culturing, catalysis, mixing, solidification, and the like. The medium material can remove phenol from groundwater, is a safe and environment-friendly material, has a long service life, and/or achieves waste treatment with waste.

Medium material for removing phenol contamination from groundwater, method of producing the same, and use of the same

Described herein is a soil remediation material capable of absorbing and removing chromium from soil and being recycled so as to enable efficient remediation, repeated recycle, and reduction in remediation cost.

Remediation material for heavy-metal chromium contaminated soil, preparation method and application thereof

A remediation system based on pollution obstruction for underground water with DNAPL pollutant is provided, including a vertical obstructing wall, a pump-out treating unit and a recharging unit, wherein the vertical obstructing wall is distributed at the periphery of a polluted area to obstruct the polluted underground water in the vertical obstructing wall; the pump-out treating unit includes a plurality of water pumping wells and overground treatment facility that are distributed in the polluted area, the plurality of the water pumping wells are configured to pump the polluted underground water out and sending it into the overground treatment facility so as to be treated; the recharging unit includes a plurality of recharging wells, and water treated by the overground treatment facility is recharged into a target aquifer in the polluted area by the plurality of the recharging wells. A remediation method using the system is provided.

Remediation system and method based on pollution obstruction for underground water with DNAPL pollutant

Disclosed are a video processing method and apparatus, a terminal and a medium. The method includes acquiring a first editing parameter of a playback speed of a continuous video and a second editing parameter of a playback speed of each of at least one target video segment, where the continuous video is synthesized from at least two video segments and the at least one target video segment includes at least one of the at least two video segments; calculating a target playback speed of each of the at least two video segments according to the first editing parameter and the second editing parameter corresponding to the each of the at least one target video segment; and synthesizing, based on the target playback speed of the each of the at least two video segments, the at least two video segments into a target video conforming to a preset duration.

Video processing method and apparatus, terminal and medium

The present application discloses a method and apparatus for annotating point cloud data. A specific implementation of the method includes: collecting data in a given scenario by using a laser radar and a non-laser radar sensor to respectively obtain point cloud data and sensor data; segmenting and tracking the point cloud data to obtain point cloud segmentation and tracking results; recognizing and tracking feature objects in the sensor data to obtain feature object recognition and tracking results; correcting the point cloud segmentation and tracking results by using the feature object recognition and tracking results, to obtain confidence levels of the point cloud recognition and tracking results; and determining a point cloud segmentation and tracking result whose confidence level is greater than a confidence level threshold as a point cloud annotation result. This implementation reduces the amount of manual work required for annotating point cloud data, thereby reducing the annotation costs.

Method and apparatus for annotating point cloud data

A skid-mounted depressurizing system includes a main process module, a mechanical control system, a thermodynamic balance system and an intelligent control system. The main process module includes multiple main process pipelines, each of the multiple main process pipelines is provided with a pressure reducing valve set. During depressurization, process medium enters at least one of the multiple main process pipelines, the mechanical control system outputs a torque according to the control instruction of the intelligent control system to control each valve of the multiple main process pipelines to perform an action switch and an opening degree adjustment, the thermodynamic balance system is configured to provide the medium of different properties to the multiple main process pipelines according to the control instruction of the intelligent control system to control temperature, pressure, cleanliness degree and/or sealing degree of the main process module.

Skid-mounted depressurizing system

An in-situ thermal desorption system, an in-situ thermal desorption-oxidation remediation system and a remediation method are provided, wherein the in-situ thermal desorption system comprises a heating device and an extraction device, wherein the heating device is used for transporting heated air to the contaminated soil to desorb the organic pollutants, and wherein the extraction device is used for sucking the desorbed organic pollutants. The in-situ thermal desorption-oxidation remediation system adds a thermal catalytic oxidation device based on the in-situ thermal desorption system, wherein the organic pollutants extracted by the extraction device are catalytically degraded in the thermal catalytic oxidation device, and a device for recycling and reprocessing an exhaust gas is further added. The present disclosure also provides an in-situ thermal desorption-oxidation remediation method. The heating method of the present disclosure is novel, which reduces the cost of thermal desorption, strengthens the heating area, improves the heating efficiency, further enhances the thermal catalytic oxidation efficiency, and achieves the reuse and recycle of the exhaust gas. Thus, no secondary exhaust gas is produced.

In-situ thermal desorption system, in-situ thermal desorption-oxidation repair system and repair method

A soil heavy metal composite passivator and its preparation method, use method and application. The passivator is a powder particle obtained mainly by mixing modified palygorskite, biomass charcoal, quicklime and fungus residue in a mass ratio of 1:(0.3&#x2dc;0.5):(0.5&#x2dc;0.8):(0.2&#x2dc;0.4), with an average particle size of 0.5&#x2dc;1 mm. The invention further provides preparation and use methods for the above soil heavy metal composite passivator. The soil heavy metal composite passivator according to the invention can effectively passivate heavy metal pollution in farmland soil and reduce bioavailability of various heavy metals in soil so as to recover ecological and industrial functions of the soil and improve crop quality. Material selected in the present invention are safe and environmental-friendly, realized 'waste control by waste itself', have long service life, and do not cause secondary pollution to soil.

Soil heavy metal composite passivator and its preparation method, use method and application

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Beijing, China

Xu Han