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    Magnetic-based determination of sorption separation factor for binary gas mixtures
    1.
    发明授权
    Magnetic-based determination of sorption separation factor for binary gas mixtures 有权

    公开(公告)号：US12298366B2

    公开(公告)日：2025-05-13

    申请号：US18021004

    申请日：2021-09-02

    Applicant: Khalifa University of Science and Technology

    Inventor： Dionysios Karousos ,  Andreas Sapalidis ,  Georgios Karanikolos ,  Evangelos Favvas

    IPC: G01R33/16 ,  B01D53/04

    Abstract: Embodiments include methods (and related systems, devices, and apparatuses) for determining a sorption separation factor for a binary gas mixture by applying a magnetic field to at least a portion of a sorbent (604) disposed in a chamber of a magnetic susceptibility device; directing a first gas stream including a first gas compound into the chamber at a first pressure and temperature to obtain a first magnetic susceptibility measurement; directing a second gas stream including a second gas compound into the chamber at a second pressure and temperature to obtain a second magnetic susceptibility measurement; directing a binary gas mixture including the first gas compound and the second gas compound into the chamber at a third pressure and temperature to obtain a third magnetic susceptibility measurement; and determining a sorption separation factor based on the first, the second, and the third magnetic susceptibility measurements.

    Low power digital low-dropout power regulator
    2.
    发明授权
    Low power digital low-dropout power regulator 有权

    公开(公告)号：US12292753B2

    公开(公告)日：2025-05-06

    申请号：US17782562

    申请日：2020-12-04

    Applicant: Khalifa University of Science and Technology

    Inventor： Baker Mohammad ,  Dima Kilani ,  Hani Saleh

    IPC: G05F1/59 ,  G05F1/46 ,  G05F1/575 ,  H03K19/094

    Abstract: Digital logic voltage regulators and related methods generate a regulated voltage via controlled switching of a power transistor. A digital logic voltage regulator includes a voltage level comparator, a power transistor, and a charge accumulator. The voltage level comparator generates a digital control signal that alternates between a first voltage level and a second voltage level in response to changes in relative voltage level between the regulated output voltage and the target voltage. The digital control signal causes the power transistor to switch from off to on in response to a reduction of the regulated output voltage relative to the target voltage and causes the power transistor to switch from on to off in response to an increase of the regulated output voltage relative to the target voltage. The charge accumulator decreases variation in the regulated output voltage that would occur without the charge accumulator.

    Biomarker-responsive contact lens
    5.
    发明授权
    Biomarker-responsive contact lens 有权

    公开(公告)号：US12204180B2

    公开(公告)日：2025-01-21

    申请号：US17693493

    申请日：2022-03-14

    Applicant: Khalifa University of Science and Technology

    Inventor： Haider Butt ,  Mohamed Elsherif

    IPC: G02C7/04 ,  A61B5/00

    Abstract: Embodiments of the present disclosure describe a biomarker-responsive bifocal contact lens comprising a monovision contact lens having a first focal length and a Fresnel contact lens having a second focal length, wherein the Fresnel contact lens comprises a biomarker-responsive hydrogel, and wherein the Fresnel contact lens is disposed on an outer surface of the monovision contact lens, wherein an optical characteristic of the Fresnel contact lens changes in response to the biomarker concentration in the ocular fluid.

    VORTEX TUBE INCLUDING SECONDARY INLET WITH SWIRL GENERATOR
    7.
    发明公开
    VORTEX TUBE INCLUDING SECONDARY INLET WITH SWIRL GENERATOR 审中-公开

    公开(公告)号：US20240353153A1

    公开(公告)日：2024-10-24

    申请号：US18569170

    申请日：2021-06-15

    Applicant: Khalifa University of Science and Technology

    Inventor： Yacine Addad ,  Omar Sharief Ibrahim Alyahia

    IPC: F25B9/04

    CPC classification number: F25B9/04

    Abstract: Vortex Tubes and related methods of separating an airflow into a hot airflow and a cold airflow employ a secondary airflow inlet. A Vortex Tube includes a secondary airflow inlet that injects a swirling airflow aligned with a central region of the lumen of a circulating tube. The secondary airflow inlet includes a swirl generator that generates the vorticity of the swirling airflow. The injected swirling airflow increase the inner vortex strength thereby increasing the temperature difference between the hot airflow and the cold airflow.

    Downhole core plug apparatuses and related methods
    8.
    发明授权
    Downhole core plug apparatuses and related methods 有权

    公开(公告)号：US12098625B2

    公开(公告)日：2024-09-24

    申请号：US17640900

    申请日：2020-09-03

    Applicant: Khalifa University of Science and Technology ,  Abu Dhabi National Oil Company

    Inventor： James McElhinney ,  Ayesha Almarzooqi ,  Jorge Salgado Gomes

    IPC: E21B43/12 ,  E21B23/03 ,  E21B49/08

    CPC classification number: E21B43/122 ,  E21B23/03 ,  E21B49/08

    Abstract: Embodiments include a core plug holding apparatus including a tubular member configured to be inserted into a side pocket of a mandrel, the tubular member having an uphole end, a downhole end, and a core plug section located between the uphole end and the downhole end, wherein the core plug section is used for housing of one or more core plug samples and wherein tubular member includes one or more orifices formed in the core plug section. Embodiments include a method of sampling a well including deploying one or more core plug holding apparatuses into one or more side pocket mandrels of a completion; holding the one or more core plug holding apparatuses in the one or more side pocket mandrels for an incubation period; and retrieving the one or more core plug holding apparatuses from the one or more side pocket mandrels after the passage of the incubation period.

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