公开(公告)号：US20230314839A1

公开(公告)日：2023-10-05

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

CPC classification number: G02C7/049 ,  A61B5/6821 ,  G02C7/042

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.

公开(公告)号：US20230266743A1

公开(公告)日：2023-08-24

申请号：US18010087

申请日：2021-06-29

Applicant: Khalifa University of Science and Technology

Inventor： Igor BOIKO ,  Ahmed SHEHADA ,  Balanthi Mogru Abdul Rahiman BEIG ,  Yan YAN

IPC: G05B19/4155

CPC classification number: G05B19/4155 ,  G05B2219/42033

Abstract: A method of automatically tuning a proportional-integral-derivative (PID) controller (102) controlling a DC-DC converter (100) includes substituting the PID controller (102) with a modified relay feedback test (MRFT) (104) controller having a threshold parameter (β) and a magnitude parameter (h), iteratively determining a current error signal (e [k]) by measuring an output voltage (Vo[k]) of the DC-DC converter (100) and comparing it to a desired reference output voltage (Vo-ref), input the error signal (e[k]) to the MRFT (104), determining an output value (u[k]) of the MRFT, update the duty cycle (D) based on the output value (u[k]), operating the DC-DC converter (100) using the updated duty cycle (D), exciting oscillations in the loop containing the MRFT (104) and the DC-DC converter (100), measuring a frequency (Ω0) and amplitude (α0) of the output voltage (Vo[k]), updating PID controller parameters based on the frequency (Ω0) and amplitude (α0), and substituting the MRFT (104) with the PID controller (102).

公开(公告)号：US20230217080A1

公开(公告)日：2023-07-06

申请号：US17995984

申请日：2021-04-13

Applicant: Khalifa University of Science and Technology

Inventor： Abdulhadi SHOUFAN ,  Fatma Omar Mohamed MOHAMED ,  Ernesto DAMIANI

IPC: H04N21/482 ,  H04N21/466 ,  H04N21/475

CPC classification number: H04N21/4826 ,  H04N21/4668 ,  H04N21/4756 ,  H04N21/4828

Abstract: This disclosure includes systems and techniques that verify an educational quality of online videos, employing a platform that enables experts to endorse and/or recommend videos that are more readily accessible to end users. Certain aspects include a computing device for a service provider that receives a query from a user for video content. The computing device forwards the query to a hosting service, and in response to the query, the computing device receives, from the hosting service, a list of video content items it hosts. The computing device identifies, for each video content item within the list of video content items, an endorsement value associated with one or more experts. In some aspects, the computing device generates an aggregated list of video content items from a plurality of lists of video content items based on endorsement values. The computing device provides recommendations to the user using the endorsement values.

公开(公告)号：US11666855B2

公开(公告)日：2023-06-06

申请号：US16631113

申请日：2017-07-14

Applicant: Khalifa University of Science and Technology

Inventor： Georgios Karanikolos ,  Evangelos P. Favvas ,  Nikolaos S. Heliopoulos ,  Sergios K. Papageorgiou

IPC: B01D53/22 ,  B01D69/08 ,  B01D71/02 ,  B01D71/64

CPC classification number: B01D53/228 ,  B01D53/229 ,  B01D69/08 ,  B01D71/021 ,  B01D71/64 ,  B01D2053/224 ,  B01D2311/2607

Abstract: Apparatus, methods and uses for separating gas mixtures of at least two different gases under magnetic field and employing a membrane are described.

公开(公告)号：US11655427B2

公开(公告)日：2023-05-23

申请号：US17521924

申请日：2021-11-09

Applicant: Khalifa University of Science and Technology

Inventor： Dimitrios Kyritsis ,  Dimitrios Goussis

IPC: C10L1/12 ,  C10L9/12 ,  F02B47/02 ,  F02M25/03

CPC classification number: C10L1/1266 ,  C10L1/125 ,  C10L1/1258 ,  C10L9/12 ,  F02B47/02 ,  F02M25/03 ,  C10L2200/0254 ,  C10L2200/0259 ,  C10L2200/0295 ,  C10L2270/023 ,  C10L2270/026

Abstract: Described are methods for shortening the combustion delay of ammonia fuels and reducing the amount of NO formed during the combustion process. The methods include mixing ammonia with hydrogen peroxide and water to form a fuel mixture and then combusting the fuel mixture. Methods of powering an internal combustion engine with ammonia fuels are also described.

公开(公告)号：US20230072207A1

公开(公告)日：2023-03-09

申请号：US17900770

申请日：2022-08-31

Applicant: Khalifa University of Science and Technology

Inventor： Rajkumar MUTHUSAMY ,  Huda Alyammahi ,  Muhammad Umer Hameed Shah ,  Omar Fuad Faris ,  Irfan Hussain ,  Yahya Hashem Zweiri ,  Dongming Gan ,  Seneviratne Mudigansalage Seneviratne

IPC: B25J19/02 ,  B25J13/08

Abstract: A robotic manipulator is described. The robotic manipulator includes a rigid or semi-rigid end effector that engages with objects and a sensor that detects data associated with the object. For example, the sensor can include an optical sensor or a vision-based tactile sensor that detects data associated with the object.

公开(公告)号：US20230062762A1

公开(公告)日：2023-03-02

申请号：US17797297

申请日：2021-02-03

Applicant: Khalifa University of Science and Technology

Inventor： Saeed Alhassan ALKHAZRAJI ,  Kevin HALIQUE

IPC: C09K17/40 ,  A01G24/10 ,  A01G24/20

Abstract: Embodiments include an artificial soil composition for supporting plant growth and related methods. The artificial soil composition may include a mixture including at least three of the following components: (a) an iron oxide-containing industrial byproduct; (b) a sulfur- containing industrial byproduct; (c) a sand component; (d) a clay component; (e) a water- soluble polymer component; (f) a nitrogen-phosphorus-potassium (NPK) source; and (g) an organic matter component. Embodiments further include a method of making an artificial soil composition, a method of growing plants in an artificial soil composition, and the like.

公开(公告)号：US20230012155A1

公开(公告)日：2023-01-12

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.

公开(公告)号：US20230009402A1

公开(公告)日：2023-01-12

申请号：US17783884

申请日：2019-12-30

Applicant: Khalifa University of Science and Technology

Inventor： Saeed Alhassan ALKHAZRAJI ,  Vassilios TZITZIOS ,  Georgios PAPAVASSILIOU ,  Marina KARAGIANNI ,  Athanasios ANASTASIOU ,  Savvas ORFANIDES ,  Michael FARDIS ,  Dimitrios GOURNIS ,  Mohammed SUBRATI

IPC: G01V3/08 ,  G01V3/30

Abstract: Disclosed herein are methods and systems for monitoring fluid flow in a rock formation that include utilizing a tracer fluid containing a homogeneous dispersion of ultrastable magnetic nanoparticles which can be injected into the rock formation. A series of EM signals can be emitted in formation by a transmitter at a first plurality of discrete depths along a first path, that can be recorded by a receiver at a second plurality of locations at a second plurality of discrete depth. The received EM signals can be processed to generate a set of EM permeability data that is indicative of variations in magnetic permeability between the first path and the second path. A magnetic permeability map can be generated that is indicative of a location of the tracer fluid.

公开(公告)号：US20220357593A1

公开(公告)日：2022-11-10

申请号：US17307316

申请日：2021-05-04

Applicant: Khalifa University of Science and Technology

Inventor： Haider BUTT ,  Mohamed ELSHERIF

IPC: G02C7/04 ,  G02C7/02 ,  B29D11/00 ,  G02C7/10

Abstract: An ophthalmic contact lens configured to treat color vision deficiency is presented herein. The contact lens includes a tinted region containing either or both of a first dye that is configured to absorb at least 50% of incident light in a spectral band between 480 nanometers to 500 nanometers and a second dye that is configured to absorb at least 50% of incident light in a spectral band between 550 nanometers to 580 nanometers. A method of manufacturing such a contact lens and a process of forming an ophthalmic contact lens by an additive manufacturing process is also presented.