Patents Assigned to Amirkabir University of Technology
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Publication number: 20240074979Abstract: A method for fabricating a medical braided capsule may include braiding a multi-layer shell onto a powder injection pipe by moving the powder injection pipe linearly up and down in a braiding zone of a braiding machine, discharging a powder from the powder injection pipe into the multi-layer shell, and moving the powder injection pipe out of the multi-layer shell. Discharging the powder from the powder injection pipe into the multi-layer shell and moving the powder injection pipe out of the multi-layer shell are carried out simultaneously.Type: ApplicationFiled: November 9, 2023Publication date: March 7, 2024Applicants: Amirkabir University of Technology (Tehran Polytechnic) Amirkabir University of Technology (Tehran PInventors: Hadi Dabiryan, Saeed Hamze
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Publication number: 20240019467Abstract: A method for frequency estimation in a power system. The method includes detecting a condition of the power system, applying a first estimation process to a voltage signal of the power system responsive to a normal condition being detected, and applying a second estimation process to a current signal of the power system responsive to a fault condition being detected. The condition of the power system is detected utilizing a protective device. The condition of the power system includes one of a normal condition and a fault condition.Type: ApplicationFiled: August 3, 2023Publication date: January 18, 2024Applicants: Amirkabir University of Technology, VEBKO AmirkabirInventors: Seyed Soroush Karimi Madahi, Hossein Askarian Abyaneh, Farzad Razavi, Mohammad Parpaei, Davood Yoosefian
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Publication number: 20230106470Abstract: A method for synthesizing a nanohybrid comprising forming a polymer solution by dissolving carboxymethyl chitosan and gelatin in a 2-(N-Morpholino)ethanesulfonic acid (MES) buffer, forming a first solution by adding (3-Glycidyloxypropyl)trimethoxysilane (GPTMS) to the polymer solution, forming a second solution by adding an acid-hydrolyzed tetraethyl orthosilicate (TEOS) solution to the first solution, forming a third solution by adding a calcium chloride (CaCl2) solution to the second solution, forming a fourth solution by mixing the third solution with a solution of 1 ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC) and N-hydroxysuccinimide (NHS), forming a frozen nanohybrid, and thawing the frozen nanohybrid.Type: ApplicationFiled: December 2, 2022Publication date: April 6, 2023Applicants: Amirkabir University of Technology, National Institute for medical Research Development (NIMAD)Inventors: Shadab Bagheri khoulenjani, Hamid Mirzadeh, Nafiseh Olov, Roshanak Moradi, Saeid Amanpour
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Publication number: 20220239534Abstract: A method for adaptive coding and modulation. The method includes generating a set of mapping functions and transmitting a tth set of transmit symbols where 1?t?T and T is a maximum number of symbol transmissions. Transmitting the tth set of transmit symbols includes transmitting each transmit symbol in the tth set of transmit symbols. Each transmit symbol is transmitted by a respective transmitter. Transmitting each transmit symbol includes generating a tth set of mapped symbols, generating each transmit symbol from the tth set of mapped symbols, and transmitting each transmit symbol. Generating the tth set of mapped symbols includes applying a mapping functions subset of the set of mapping functions on a respective data vector. Each mapping function in the mapping functions subset depends on a respective mapped symbol in an rth set of mapped symbols where 0?r?T.Type: ApplicationFiled: April 15, 2022Publication date: July 28, 2022Applicants: AmirKabir University of TechnologyInventors: Mohammad Sadegh Safari, Vahid Pourahmadi, Patrick Mitran
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Publication number: 20220083798Abstract: A method for generating at least one of a plurality of data samples in a first frequency band from measurements in a second frequency band. The method includes obtaining a first plurality of samples by measuring a plurality of frequency responses of an environment in the first frequency band, obtaining a second plurality of samples by measuring a first set of frequency responses of the environment in the second frequency band, obtaining a mapping model based on the first plurality of samples and the second plurality of samples, obtaining a third plurality of samples by measuring a second set of frequency responses of the environment in the second frequency band, and obtaining the at least one of the plurality of data samples by applying the mapping model on the third plurality of samples.Type: ApplicationFiled: October 25, 2021Publication date: March 17, 2022Applicants: Amirkabir University of TechnologyInventors: Mohammad Hadi Kefayati, Vahid Pourahmadi
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Publication number: 20220044042Abstract: A method for generating a data sample in a first frequency band from measurements in a second frequency band. The method includes obtaining a first plurality of samples, obtaining a second plurality of samples, obtaining a mapping model based on the first plurality of samples and the second plurality of samples, obtaining a third plurality of samples, and obtaining the data sample based on the mapping model and the third plurality of samples. Obtaining the first plurality of samples includes measuring a first frequency response of an environment in the first frequency band. Obtaining the second plurality of samples includes measuring a second frequency response of the environment in the second frequency band. Obtaining the third plurality of samples includes measuring a third frequency response of the environment in the second frequency band. Obtaining the data sample includes applying the mapping model on the third plurality of samples.Type: ApplicationFiled: October 25, 2021Publication date: February 10, 2022Applicants: Amirkabir University of TechnologyInventors: Mohammad Hadi Kefayati, Vahid Pourahmadi
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Publication number: 20220025483Abstract: A method for recovering metal oxides from a paint sludge. The method may include obtaining a first mixture by evaporating an organic part of the paint sludge. Evaporating the organic part of the paint sludge may include heating the paint sludge in a furnace. The method may further include precipitating a second mixture from the first mixture by mixing the first mixture and a sodium hydroxide solution. The method may further include recovering titanium dioxide from the second mixture by mixing the second mixture with a hydrochloric acid solution.Type: ApplicationFiled: August 7, 2021Publication date: January 27, 2022Applicant: Amirkabir University of TechnologyInventors: Malek Naderi, Davoud Fatmehsari Haghshenas, Arash Ghazitabar
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Publication number: 20220017720Abstract: A method for producing a colloidal aphron/graphene hybrid fluid composition. The method may include forming a first mixture by mixing a graphene oxide aqueous solution and a biopolymer solution. The method may further include forming a second mixture by mixing the first mixture with at least an ionic-surfactant solution and a non-ionic surfactant solution.Type: ApplicationFiled: September 28, 2021Publication date: January 20, 2022Applicants: Amirkabir University of TechnologyInventors: Mohammad Hossein Akhlaghi, Malek Naderi
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Publication number: 20220006199Abstract: A metamaterial loaded antenna. The metamaterial loaded antenna includes a dielectric substrate, a first arm, a second arm, a feed point, and a metamaterial structure. The first arm and the second arm are placed on the dielectric substrate. The feed point includes at least one gap between the first arm and the second arm. A metamaterial structure is inserted in the feed point. The metamaterial structure includes a single negative (SNG) metamaterial. The SNG metamaterial includes a first permittivity ?1 and a first permeability ?1. The first permittivity ?1 and the first permeability ?1 satisfy a condition according to ?1?1<0.Type: ApplicationFiled: September 20, 2021Publication date: January 6, 2022Applicants: Amirkabir University of TechnologyInventors: Amir Jafargholi, Seyed Saleh Mousavi Khaleghi, Kamyar Goudarzi, Mehran Ahadi, Parviz Parvin
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Publication number: 20210410055Abstract: A method for indoor localization based on previous activities. The method includes acquiring a target observation from a target user, adding the target observation to a target observations list of a plurality of observations lists, obtaining a target cluster for the target user, verifying that the target cluster satisfies a localization condition, replacing the target cluster with a substitute cluster responsive to the target cluster not satisfying the localization condition, obtaining an estimated location of the target user based on the target cluster responsive to the target cluster satisfying the localization condition, obtaining the estimated location based on the plurality of observations lists responsive to the substitute cluster not satisfying the localization condition, and storing the estimated location in a database. The target observation is acquired utilizing an access point.Type: ApplicationFiled: September 14, 2021Publication date: December 30, 2021Applicants: digikalaNext, Amirkabir University of TechnologyInventors: Mahan Tabatabaie, Ali Mohades Khorasani, Mohammad Ebrahim Shiri
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Publication number: 20210373185Abstract: A system for detecting a position of an ionizing radiation. The system includes a radiation detector including a plurality of cathode films, a plurality of anode strips sets, a plurality of insulator films, a conductive grid, and a drift region. Each set of the plurality of anode strips sets is disposed between a respective pair of adjacent cathode films of the plurality of cathode films. Each of the plurality of insulator films is disposed between a respective cathode film of the plurality of cathode films and a respective set of the plurality of anode strips sets. The conductive grid is disposed in parallel with the detection plane and exposed to the ionizing radiation. A drift region includes a region between the conductive grid and the detection plane. The radiation detector is configured to ionize a gas by generating an electric field inside the drift region.Type: ApplicationFiled: August 14, 2021Publication date: December 2, 2021Applicants: Amirkabir University of TechnologyInventors: Faiyaz Mohammadbaghery, Shahyar Saramad, Mojtaba SHAMSAIEZAFARGHANDI
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Publication number: 20210220255Abstract: An electrospun nanofibrous layer may include an exemplary polymer scaffold made of at least one of nylon, polyester, polyvinyl alcohol, chitosan, and acrylic, an amine-terminated dendritic polymer that may be attached to and distributed within the exemplary polymer scaffold. An exemplary amine-terminated dendritic polymer may include at least one of polyamidoamine, polypropylene imine, and polyethylene imine. An electrospun nanofibrous layer may further include an exemplary volatile aromatic compound that may be encapsulated within the amine-terminated dendritic polymer.Type: ApplicationFiled: July 14, 2018Publication date: July 22, 2021Applicant: Amirkabir University of Technology (Polytechnic Tehran)Inventor: Somaye AKBARI
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Publication number: 20210210859Abstract: A microstrip antenna is disclosed. The microstrip antenna includes a dielectric substrate with a first relative permittivity, a metal patch, and a magneto-dielectric superstrate. The metal patch is printed on the dielectric substrate, and the magneto-dielectric superstrate is placed above the metal patch.Type: ApplicationFiled: March 20, 2021Publication date: July 8, 2021Applicants: Amirkabir University of TechnologyInventors: Amir Jafargholi, Ali Jafargholi, Mehdi Veysi, Jun H. Choi
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Publication number: 20210210860Abstract: A system for EMNZ metamaterial-based direct antenna modulation. The system includes a signal generator, a metamaterial switch and an antenna. The signal generator may is configured to generate a microwave signal. The metamaterial switch is configured to generate a modulated microwave signal from the microwave signal. The modulated microwave signal is generated by selectively passing the microwave signal through the metamaterial switch. The metamaterial switch includes a first conductive plate and a first loaded conductive plate. The first loaded conductive plate includes a second conductive plate and a first monolayer graphene. The first monolayer graphene includes a first tunable conductivity. The first monolayer graphene is positioned between the first conductive plate and the second conductive plate. An effective permittivity of the metamaterial switch is configured to be adjusted to a predetermined value.Type: ApplicationFiled: March 20, 2021Publication date: July 8, 2021Applicant: Amirkabir University of TechnologyInventors: Mehran Ahadi, Amir Jafargholi, Parviz Parvin
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Publication number: 20210207244Abstract: A method for recovery of precious metals from copper anode slime may include leaching a leach liquor out of the copper anode slime by mixing the copper anode slime with a mixture of nitric acid and sulfuric acid, separating silver from the leach liquor by forming a silver chloride precipitate in the leach liquor by mixing a supersaturated sodium chloride solution with the leach liquor at room temperature and obtaining a first filtrate by filtering the silver chloride precipitate out of the leach liquor. Copper may be separated from the first filtrate by forming a copper hydroxide precipitate in the first filtrate by adjusting pH of the first filtrate at 9 and obtaining a second filtrate by filtering the copper hydroxide precipitate out of the first filtrate. Metallic selenium may be recovered from the second filtrate by reducing the metallic selenium via a chemical reduction utilizing L-ascorbic acid (LAA) as a reducing agent.Type: ApplicationFiled: March 20, 2021Publication date: July 8, 2021Applicants: Amirkabir University of TechnologyInventors: Malek Naderi, Arash Ghazitabar
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Publication number: 20210199589Abstract: A method for determining sucrose concentration in honey. The method includes preparing a sample of honey, stimulating the sample by emitting a first laser beam on the sample in a first stimulation direction, detecting a fluorescence spectrum from a first fluorescence emission emitted from the sample in a first detection direction, detecting a first pair of fluorescence peaks and a second pair of peak wavelengths in the fluorescence spectrum, and determining a sucrose concentration based on one of the first pair and the second pair utilizing a database. The database includes a plurality of predetermined sucrose concentrations associated with the first pair or the second pair.Type: ApplicationFiled: March 18, 2021Publication date: July 1, 2021Applicants: Amirkabir University of TechnologyInventors: Ali Bavali, Alireza Mashhadi, Amir Jafargholi, Mohsen Hashemi, Farzad Mokhtari
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Publication number: 20210194143Abstract: A system for EMNZ metamaterial-based direct antenna modulation. The system includes a signal generator, a metamaterial switch and an antenna. The signal generator may is configured to generate a microwave signal. The metamaterial switch is configured to generate a modulated microwave signal from the microwave signal. The modulated microwave signal is generated by selectively passing the microwave signal through the metamaterial switch. The metamaterial switch includes a first conductive plate and a first loaded conductive plate. The first loaded conductive plate includes a second conductive plate and a first monolayer graphene. The first monolayer graphene includes a first tunable conductivity. The first monolayer graphene is positioned between the first conductive plate and the second conductive plate. An effective permittivity of the metamaterial switch is configured to be adjusted to a predetermined value.Type: ApplicationFiled: February 21, 2021Publication date: June 24, 2021Applicant: Amirkabir University of TechnologyInventors: Mehran Ahadi, Amir Jafargholi, Parviz Parvin
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Publication number: 20210184323Abstract: A metamaterial switch. The metamaterial switch includes a first conductive plate, a first loaded conductive plate, and a magneto-dielectric material. The first loaded conductive plate includes a second conductive plate and a first tunable impedance surface set. Each tunable impedance surface in the first tunable impedance surface set includes a respective tunable conductivity. An effective permittivity of the metamaterial switch is configured to be adjusted to a first predetermined value. The effective permittivity of the metamaterial switch is adjusted responsive to tuning a respective tunable conductivity of each respective tunable impedance surface in the first tunable impedance surface set.Type: ApplicationFiled: February 3, 2021Publication date: June 17, 2021Applicant: Amirkabir University of TechnologyInventors: Mehran Ahadi, Amir Jafargholi, Parviz Parvin
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Publication number: 20210083396Abstract: An epsilon-and-mu-near-zero (EMNZ) metamaterial. The EMNZ metamaterial includes a waveguide. A length l of the waveguide satisfies a length condition according to l?0.1?, where ? is an operating wavelength of the EMNZ metamaterial. The EMNZ metamaterial further includes a magneto-dielectric material deposited on a lower wall of the waveguide. The waveguide includes an impedance surface placed on the magneto-dielectric material.Type: ApplicationFiled: November 12, 2020Publication date: March 18, 2021Applicant: Amirkabir University of TechnologyInventors: Mehran Ahadi, Amir Jafargholi, Parviz Parvin
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Publication number: 20200110031Abstract: A method for optical imaging based on spectral shift assessment. The method includes generating a sample by mixing an object with a fluorophore, stimulating the sample by emitting a laser beam, extracting a plurality of fluorescence spectra from a plurality of fluorescence emissions emitted from the sample, detecting a plurality of fluorescence peaks and a plurality of peak wavelengths in the plurality of fluorescence spectra, extracting a plurality of fluorophore concentrations from a database, and generating a concentration image. The plurality of peak wavelengths are detected by detecting a respective peak wavelength of the plurality of peak wavelengths. Each of the plurality of fluorophore concentrations is associated with a respective peak wavelength of the plurality of peak wavelengths. The concentration image includes a first plurality of pixels. The concentration image is generated based on a respective fluorophore concentration of the plurality of fluorophore concentrations.Type: ApplicationFiled: December 8, 2019Publication date: April 9, 2020Applicants: Amirkabir University of TechnologyInventors: Parviz Parvin, Amir Jafargholi, Ali Bavali, Mohammad Amin Bassam, Parisa Zhalefar, Azadeh Niazi, Seyed Ali Dehghanian, Zahra Khodabakshi