Abstract: Disclosed is an accuracy compensation method for discharge caustic alkali concentration measuring device in evaporation process, comprising following steps: step 1. collecting process data of instrument values and laboratory values of alkali liquor refractive index, temperature and caustic alkali concentration in the evaporation process; step 2. performing sliding average filtering, time series matching and normalization on the process data collected in step 1 to obtain preprocessed process data; step 3. inputting the preprocessed process data into an accuracy compensation model of the caustic alkali concentration measuring device to obtain compensation values; step 4. adding the compensation values of the caustic alkali concentration to the instrument values to realize on-line compensation of the caustic alkali concentration.
Abstract: Some embodiments of the disclosure provide a method for homogeneously controlling a transverse temperature during laminar cooling of a hot-rolled strip. In an embodiment, a mathematical model of middle convexity cooling in a water volume is established by designing different types of middle convexity water cooling heat transfer coefficient curves. Process procedures and equipment parameters of the hot-rolled strip during the laminar cooling are considered to restore the actual situation on site. Through finite element calculation, an optimal middle convexity water cooling heat transfer coefficient curve is obtained. Process parameters corresponding to middle convexity water volume distribution during the laminar cooling (a water flow density) are further obtained to guide a water volume control process.
Abstract: A second type computer assembly line balancing optimization method based on a migration genetic algorithm, and related to the technical field of assembly line balancing. The method uses assembly experience of similar assembly lines, the feasible solution set of the known assembly lines is transferred to the initial solution set of the assembly line balancing problem to be optimized, due to the migration of high-quality feasible solutions. The method can effectively reduce the sensitivity of the algorithm performance to the initial value and parameters, and improve the lower limit of the local optimal feasible solution of the heuristic algorithm to solve the assembly line balancing problem.
Type:
Application
Filed:
December 3, 2021
Publication date:
January 25, 2024
Applicant:
Northeastern University
Inventors:
Hongrui GAO, Feng XUE, Yingwei ZHANG, Lin FENG, Shengyang ZHANG, Zubian LI
Abstract: The disclosed systems and methods provide a systematic approach to analyzing an individual's lifestyle factors (e.g., foods consumed by the individual) that contribute to the individual's current or potential for disease, and taking further action based on that analysis. One example embodiment is a machine learning system that includes a food composition layer, chemical compounds layer, and disease layer. The food composition layer provides representations of chemical compounds of foods consumed or to be consumed by the individual. The chemical compounds layer is coupled to the food composition layer by links and filters the representations of the chemical compounds based on genetic or metabolic information of the individual, resulting in representations of personalized filtered chemical compounds.
Type:
Grant
Filed:
June 28, 2022
Date of Patent:
January 23, 2024
Assignee:
Northeastern University
Inventors:
Giulia Menichetti, Albert-László Barábasi, Peter Ruppert
Abstract: MALDI-MS operated slightly under matrix storm conditions with a high-energy-transfer, acidic matrix, or these conditions with a high sample to matrix ratio, can with ultrasensitivity detect a nucleobase, modified or canonical, of a nucleic acid species as a jettisoned, protonated molecule.
Abstract: Disclosed are biomaterials, including engineered living materials (ELMs), comprising a plurality of microbial cells, wherein the material has a Young's Modulus of at least 5 Gpa; and methods of fabricating said biomaterials.
Type:
Grant
Filed:
July 2, 2021
Date of Patent:
January 2, 2024
Assignees:
Northeastern University, President and Fellows of Harvard College
Inventors:
Avinash M. Basavanna, Anna Duraj-Thatte, Neel S. Joshi
Abstract: Disclosed herein are functionalized dopamine derivatives comprising an optionally substituted acrylic acid moiety and optionally a polyethylene glycol linking moiety. The functionalized dopamine derivatives are useful in cryogel formulations to improve the adhesivity of the cryogel, while preventing undesirable oxidation typically associated with dopamine-containing hydrogels and cryogels. Properties such as cryogel adhesivity, pore size, and interconnectivity are tunable features. Also provided herein are methods of treating a wound or promoting tissue regeneration with a cryogel of the invention or a formulation comprising such a cryogel.
Type:
Grant
Filed:
October 26, 2020
Date of Patent:
December 26, 2023
Assignee:
Northeastern University
Inventors:
Devyesh Rana, Sidi A. Bencherif, Nasim Annabi
Abstract: Disclosed is a technology for assaying individual cells, in which the identity of each individual cell in an ordered array is determined from coordinates assigned to it, and can be readout at high throughput with microscope. The method is able to test responses of millions of identical cells in multiple chemical and physical processes with superior statistics power to facilitate deep data mining.
Type:
Grant
Filed:
March 6, 2020
Date of Patent:
December 19, 2023
Assignee:
Northeastern University
Inventors:
Ming Su, Qingxuan Li, Liyuan Ma, Sidi A. Bencherif, Thibault Colombani
Abstract: A series PV arc fault detection method and apparatus demodulates a current signal provided by a DC power source to an inverter to eliminate a DC component and periodic noise. Autocorrelation coefficients are generated from the demodulated current signal to monitor noise energy and variation and, based on the noise energy, a determination is made if an arc fault has occurred.
Type:
Application
Filed:
April 19, 2023
Publication date:
December 14, 2023
Applicants:
MERSEN USA EP Corp., Northeastern University
Inventors:
Roy A. Ball, Jonathan C. Kim, Bradley M. Lehman
Abstract: The present disclosure provides a method for preparing a steel alloy sheet to enhance flatness. The method includes, inter alia, heating a steel alloy material to a first temperature that is greater than a full-austenitization point for the steel alloy material; holding steel alloy material at the first temperature for a period greater than or equal to about 1 second to less than or equal to about 10,000 seconds to from a precursor steel sheet; air quenching the precursor steel sheet to a second temperature that is less than the first temperature and greater than martensitic transformation starting temperature for the steel alloy material; and cooling the precursor steel sheet to room temperature to prepare the steel alloy sheet. The steel alloy material includes greater than or equal to about 0.5 wt. % to less than or equal to about 6 wt. % of chromium.
Type:
Application
Filed:
July 26, 2022
Publication date:
November 30, 2023
Applicants:
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Northeastern University
Inventors:
Zhou WANG, Zhisong CHAI, Wei XU, Jianfeng WANG
Abstract: A method of determining a response of a radio frequency wireless communication system to an adversarial attack is provided. Adversarial signals from an adversarial node are transmitted to confuse a target neural network of the communication system. An accuracy of classification of the incoming signals by the target neural network is determined.
Type:
Grant
Filed:
December 21, 2020
Date of Patent:
November 28, 2023
Assignee:
Northeastern University
Inventors:
Tommaso Melodia, Francesco Restuccia, Salvatore D'Oro
Abstract: A system and method for transmitting data ultrasonically through biological tissue employs a network of a plurality of nodes, at least a portion of the nodes implantable within the biological tissue. At least one implanted node includes a transmitter having an orthogonal frequency division multiplex signal generator to encode an ultrasonic signal for transmission through the biological tissue to an ultrasonic receiver at another node.
Type:
Grant
Filed:
January 11, 2022
Date of Patent:
November 28, 2023
Assignee:
Northeastern University
Inventors:
Tommaso Melodia, Giuseppe Enrico Santagati
Abstract: 2D heterostructures comprising Bi2Se3/MoS2, Bi2Se3/MoSe2, Bi2Se3/WS2, Bi2Se3/MoSe2. 2xS2x, or mixtures thereof in which oxygen is intercalated between the layers at selected positions provide high density storage devices, sensors, and display devices. The properties of the 2D heterostructures can be configured utilizing abeam of electromagnetic waves or particles in an oxygen controlled atmosphere.
Type:
Grant
Filed:
December 18, 2019
Date of Patent:
November 28, 2023
Assignee:
Northeastern University
Inventors:
Zachariah Boston Hennighausen, Swastik Kar
Abstract: A system and method is provided for transmitting signals ultrasonically among a network of implantable and wearable biological devices. The devices includes one or more implantable nodes, which include a sensing and/or actuating unit, at least one gateway node, and at least one access point node. Ultrasonic signals can be transmitted through the body by the implantable nodes to and from the gateway node, for transmission to and from the access point node. The access point node can be connected to the Internet. In this manner, remote instructions can be transmitted to the implantable nodes and data obtained at the implantable nodes can be transmitted to remote sites.
Type:
Grant
Filed:
November 25, 2020
Date of Patent:
November 28, 2023
Assignee:
Northeastern University
Inventors:
Tommaso Melodia, Giuseppe Enrico Santagati
Abstract: A piston press system and a test method using the same are used for predicting the roll service life of high-pressure grinding rolls. The method is based on the same comminution mechanism of inter-particle layers compression as the heavy equipment high-pressure grinding rolls to simulate the grinding process of the studded high-pressure grinding roll, realizing that the coverage area of studs accounts for 16% to 20% of the compression surface by disposing tungsten carbide upper studs and lower studs, better restoring the simulation process and effectively realizing the roll service life prediction of the heavy equipment high-pressure roller mill with a small quantity of materials.
Type:
Grant
Filed:
November 28, 2022
Date of Patent:
November 14, 2023
Assignees:
Northeastern University, Liaoning Wuhuan Special Materials And Intelligent Equipment Industry Technology Research Institute Co. Ltd.
Abstract: A microelectromechanical resonator device is provided having two-dimensional resonant rods. The resonator device has a piezoelectric layer formed with a plurality of alternating rods and trenches. A bottom electrode is in contact with a bottom surface of the piezoelectric layer. A top electrode metal grating of conductive strips is aligned in contact with corresponding rods of the piezoelectric layer.
Abstract: Techniques and systems for robotic aquaculture are described. In one embodiment, for example, a mariculture system may include an aquatic animal containment system operative to hold a population of aquatic animals, the aquatic animal containment system comprising an enclosed hull having a receptacle configured to receive a mechanical core, the mechanical core configured to store at least one sub-system to implement at least one function of mariculture system, and a position management system operative to maintain the enclosed hull at a depth below a surface of a body of water. Other embodiments are described.
Type:
Grant
Filed:
August 6, 2019
Date of Patent:
September 26, 2023
Assignee:
Northeastern University
Inventors:
Joseph Ayers, Mark Patterson, Jerome F. Hajjar, Milica Stojanovic, Amy Mueller, Marc Meyer, Scott Sagalow
Abstract: Devices, systems, and methods can be used for the automated production of dendritic cells (DC) from dendritic cell progenitors, such as monocytes obtained from peripheral blood, and the automated generation of immunotherapeutic products from those dendritic cells, all within a closed system. The invention makes it possible to obtain sufficient quantities of a subject's own DC for use in preparing and characterizing vaccines, for activating and characterizing the activation state of the subject's immune response, and to aid in preventing and/or treating cancer or infectious disease.
Abstract: Pink noise analysis, along with unique properties of the photovoltaic (PV) operating point of both the instantaneous current and voltage signal, is used to distinguish arc faults from other noisy loads or PV degradations.
Type:
Grant
Filed:
March 18, 2022
Date of Patent:
September 26, 2023
Assignees:
MERSEN USA EP CORP., Northeastern University
Inventors:
Roy A. Ball, Jonathan C. Kim, Bradley M. Lehman
Abstract: A sensing device is provided having sensing circuitry, connected to an input port and the output port, with a sensor having an impedance sensitive to a parameter of interest, one or more passive electrical components, and a variable capacitor. The sensing circuitry is triggered to generate an output signal for transmission from the output port, the output signal dependent on the parameter of interest sensed by the sensor and on an input power value, Pin, of an input signal received at the input port being greater than a parametric threshold power value, Pth. A sensing system includes the sensing device and a transmitting device to transmit the input signal to the sensing device at a frequency representative of the parameter of interest. A receiving device, which can be incorporated with or located remotely from the transmitting device, receives the output signal of the sensing device, which has a frequency that is half of the frequency of the input signal transmitted by the transmitting device.