Detecting contamination sources in liquid distribution systems

    公开(公告)号:US11029300B2

    公开(公告)日:2021-06-08

    申请号:US16008303

    申请日:2018-06-14

    摘要: A method and system for receiving, at a sampling location recommendation module, conventional and complementary information regarding a liquid distribution system, wherein the complementary information includes at least one of a social media post or a consumer report; processing the complementary information and a database of the liquid distribution system in the sampling location recommendation module, using computational and artificial intelligence algorithms, to generate a list of locations for sampling the liquid distribution system; displaying the list of locations; receiving a geo-tagged test record indicative of a sampled contaminant concentration value of at least one location of the list of locations; processing the geo-tagged test record, at a contamination source mapping module, to estimate a location and risk of a contamination source in the liquid distribution system; and displaying the estimated location and risk of the contamination source by modifying a map of the liquid distribution system.

    Nanoparticle design for enhanced oil recovery

    公开(公告)号:US11021646B2

    公开(公告)日:2021-06-01

    申请号:US16513844

    申请日:2019-07-17

    IPC分类号: C09K8/58 E21B43/16

    摘要: A method of designing a nanoparticle tailored to support hydrocarbon recovery in a subterranean formation, a method for using nanoparticles to extract hydrocarbon from a subterranean formation, and a nanoparticle structure. The method may include determining environmental conditions of a subterranean formation, defining nanoparticle parameters based on the environmental conditions, and forming a nanoparticle comprising the nanoparticle parameters. The method may include producing a colloidal suspension of nanoparticles by mixing nanoparticles with water and injecting the colloidal suspension of nanoparticles into a subterranean formation. A nanoparticle structure may include a hydrophilic material in a defined three-dimensional shape having a maximum diameter. The nanoparticle may penetrate through an oil-water interface with an optimized contact angle, minimize an interfacial area between oil and water, and create an oil in water emulsion.

    PORTABLE AND AUTONOMOUS, IOT ENABLED, OPTICAL MEASUREMENT SYSTEM

    公开(公告)号:US20200011797A1

    公开(公告)日:2020-01-09

    申请号:US16515968

    申请日:2019-07-18

    IPC分类号: G01N21/64

    摘要: A system is provided for performing metal trace analysis on a liquid sample. A sample holder holds an analysis substrate that includes a reference region and at least one test region. An ultraviolet (UV) light source emits ultraviolet light illuminating the liquid sample. An optical sensor detects radiation emanating from the liquid sample and converting the detected radiation into an electrical signal. A microcontroller processes the electrical signal. An external interface transmits the processed electrical signal to an external device. The analysis substrate is configured for manual movement by a user. A tracking system detects a sample scanning location for the metal trace analysis, and includes a light source, other than the UV light source, and another optical sensor. The other optical sensor detects light emitted by the light source.

    Nanoparticle design for enhanced oil recovery

    公开(公告)号:US10392555B2

    公开(公告)日:2019-08-27

    申请号:US14973785

    申请日:2015-12-18

    IPC分类号: C09K8/58 E21B43/16

    摘要: A method of designing a nanoparticle tailored to support hydrocarbon recovery in a subterranean formation, a method for using nanoparticles to extract hydrocarbon from a subterranean formation, and a nanoparticle structure. The method may include determining environmental conditions of a subterranean formation, defining nanoparticle parameters based on the environmental conditions, and forming a nanoparticle comprising the nanoparticle parameters. The method may include producing a colloidal suspension of nanoparticles by mixing nanoparticles with water and injecting the colloidal suspension of nanoparticles into a subterranean formation. A nanoparticle structure may include a hydrophilic material in a defined three-dimensional shape having a maximum diameter. The nanoparticle may penetrate through an oil-water interface with an optimized contact angle, minimize an interfacial area between oil and water, and create an oil in water emulsion.

    Carbon nanotube transistor employing embedded electrodes
    10.
    发明授权
    Carbon nanotube transistor employing embedded electrodes 有权
    采用嵌入式电极的碳纳米管晶体管

    公开(公告)号:US08987705B2

    公开(公告)日:2015-03-24

    申请号:US14150954

    申请日:2014-01-09

    摘要: Carbon nanotubes can be aligned with compatibility with semiconductor manufacturing processes, with scalability for forming smaller devices, and without performance degradation related to structural damages. A planar structure including a buried gate electrode and two embedded electrodes are formed. After forming a gate dielectric, carbon nanotubes are assembled in a solution on a surface of the gate dielectric along the direction of an alternating current (AC) electrical field generated by applying a voltage between the two embedded electrodes. A source contact electrode and a drain contact electrode are formed by depositing a conductive material on both ends of the carbon nanotubes. Each of the source and drain contact electrodes can be electrically shorted to an underlying embedded electrode to reduce parasitic capacitance.

    摘要翻译: 碳纳米管可以与半导体制造工艺的兼容性相一致,具有用于形成较小器件的可扩展性,并且与结构损坏相关的性能下降不受影响。 形成包括掩埋栅电极和两个嵌入电极的平面结构。 在形成栅极电介质之后,沿着通过在两个嵌入电极之间施加电压而产生的交流(AC)电场的方向将碳纳米管组装在栅极电介质的表面上的溶液中。 源极接触电极和漏极接触电极通过在碳纳米管的两端上沉积导电材料而形成。 源极和漏极接触电极中的每一个可以与下面的嵌入式电极电短路以减小寄生电容。