Abstract: Herein discussed is a method comprising: providing a mixed conducting membrane; exposing the membrane to a reducing environment on both sides of the membrane during the entire time of operation, wherein the operation does not receive electricity or generate electricity; wherein the reducing environments on both sides of the membrane have a pressure in the range of 5-300 bar. In an embodiment, the mixed conducting membrane conducts electrons and oxide ions. In an embodiment, the reducing environments on both sides of the membrane have a pressure of no less than 10 bar or no less than 20 bar or no less than 30 bar.

Abstract: Aspects of the disclosure include methods and systems for meta learning, and specifically to hybrid meta learning for agnostic recommender platforms. A method includes receiving, by a global block ranker of a hybrid meta learning recommendation service, a request corresponding to an entity in a network. A meta block encoder generates, at a first cadence decoupled from the request, a meta embedding of an entity-specific meta feature of the entity. The meta embedding is aggregated with one or more non-meta features at a second cadence responsive to the request and the aggregated data is input to the global block ranker. A prediction score is generated for each candidate of one or more candidates corresponding to the request and a response including a candidate is returned using the prediction score.

Abstract: A monitoring system and method for broken wires in PCCP based on distributed optical fiber sensing relates to the technical field of optical fiber sensing. The monitoring system for broken wires in PCCP comprises a Sagnac interferometer, a ?-OTDR system, a dual loopback system and a signal processing system. The Sagnac interferometer comprises a first laser, a first optical coupler, a first delay optical fiber, a Faraday rotating mirror and a first photodetector. The ?-OTDR system comprises a second laser, a second optical coupler, an acousto-optic modulator, a circulator, a third optical coupler and a second photodetector. The dual loopback system comprises a wavelength division multiplexer and a second delay optical fiber. The invention solves the problems of low positioning accuracy, limited frequency measurement range, detection dead zone and high computing pressure in monitoring broken wires in PCCP.

Abstract: The following disclosure relates to electrochemical or electrolysis cells and components thereof. More specifically, the following disclosure relates to an improved porous transport layer (PTL) with catalyst coated particles or fibers, as well as methods of coating a PTL with a catalyst coating composition. In one example, a catalyst-ionomer mixture is coated onto Titanium (Ti) particles or fibers to form a percolated coating layer near a surface of the PTL via impregnation/infiltration, electrophoretic deposition, or electroplating.

Abstract: This disclosure provides systems, methods, and apparatus related to metal-supported solid oxide electrochemical devices. In one aspect, a stainless steel support of a device is oxidized. A coating is deposited on an oxygen-electrode side of the stainless steel support of the device. The coating is operable to reduce chromium evaporation from the stainless steel support. A structure including an oxygen catalyst on the oxygen-electrode side of the device and a fuel catalyst on a fuel-electrode side of the stainless steel support of the device, with an electrolyte disposed between the oxygen catalyst and the fuel catalyst, is formed. The device is thermally treated at a temperature of about 10° C. to 400° C. above an operating temperature of about 600° C. to 800° C. of the device, the oxygen-electrode side of the device being in an oxidizing atmosphere and the fuel-electrode side of the device being in a reducing atmosphere.

Abstract: Methods, systems, and apparatuses include preprocessing data for input to a trained transformer system. User trajectory data for a user of an online system is received, the user trajectory data includes tuples for times at which the user interacted with the online system. The tuples are sorted based on the times to create a tuple sequence. Tuple subsequences are extracted from the tuple sequence based on a subsequence length. Cumulative rewards are calculated for the tuple subsequence based on rewards for the tuple subsequence. Input data is generated including cumulative rewards, action options, and the tuple subsequence. A best action option is determined by applying the trained transformer system to the input data. The best action option is implemented for the user of the online system.

Abstract: This disclosure provides systems, methods, and apparatus related to metal-supported proton conducting solid oxide electrochemical devices. In one aspect, a method includes forming an electrode on a metal support of a device with a first proton-conducting ceramic. The metal support comprises an iron-chromium alloy. The first proton-conducting ceramic is in a powder form. An electrolyte layer is formed on the electrode and on the metal support of the device with a second proton-conducting ceramic. The second proton-conducting ceramic is in a powder form. The device is thermally treated at about 1200° C. to 1550° C.

Abstract: The following disclosure relates to electrochemical or electrolysis cells and components thereof, specifically porous transport layers within electrochemical cells and methods of making such layers. In one particular example, a method of forming a portion of an electrochemical cell includes providing a porous transport layer, placing a flow field plate adjacent to a surface of the porous transport layer, and sintering or diffusion bonding the porous transport layer and the flow field plate, therein forming a uniform or homogeneous interface between the porous transport layer and the flow field plate.

Abstract: A monitoring system and method for broken wires in PCCP based on distributed optical fiber sensing relates to the technical field of optical fiber sensing. The monitoring system for broken wires in PCCP comprises a Sagnac interferometer, a ?-OTDR system, a dual loopback system and a signal processing system. The Sagnac interferometer comprises a first laser, a first optical coupler, a first delay optical fiber, a Faraday rotating mirror and a first photodetector. The ?-OTDR system comprises a second laser, a second optical coupler, an acousto-optic modulator, a circulator, a third optical coupler and a second photodetector. The dual loopback system comprises a wavelength division multiplexer and a second delay optical fiber. The invention solves the problems of low positioning accuracy, limited frequency measurement range, detection dead zone and high computing pressure in monitoring broken wires in PCCP.

Abstract: A solid ion conductive layer can include a foamed matrix and an electrolyte material including a hygroscopic material. In an embodiment, the electrolyte material can include a halide-based material, a sulfide-based material, or any combination thereof. In another embodiment, the solid ion conductive layer can include total porosity of at least 30 vol % for a total volume of the solid ion conductive layer.

Abstract: An ion conductive layer can include a hygroscopic ion conductive material, such as a halide-based material. In an embodiment, the ion conductive layer can include an organic material, ammonium halide, or a combination thereof.

Abstract: An ion conductive layer can include a hygroscopic ion conductive material, such as a halide-based material. In an embodiment, the ion conductive layer can include an organic material, ammonium halide, or a combination thereof.

Abstract: A solid ion conductive layer can include a foamed matrix and an electrolyte material including a hygroscopic material. In an embodiment, the electrolyte material can include a halide-based material, a sulfide-based material, or any combination thereof. In another embodiment, the solid ion conductive layer can include total porosity of at least 30 vol % for a total volume of the solid ion conductive layer.

Abstract: An ion conductive layer can include a hygroscopic ion conductive material, such as a halide-based material. In an embodiment, the ion conductive layer can include an organic material, ammonium halide, or a combination thereof.

Abstract: A pressing position and pressure measurement method based on PPG (photoplethysmographic) imaging, which only needs a camera to locate multiple pressing areas and measure corresponding pressure values without a pressure sensor. Before the measurement starts, only a simple calibration work is needed. With the gradual increase of the pressing pressure, the characteristics of PPG signals corresponding to diastolic pressure and systolic pressure will disappear one by one, and by recording two sets of pressure values and the corresponding PPG signal intensity values, the relation curve of the pressure versus blood perfusion changes can be fitted. Through this relation curve, the pressure values corresponding to different blood PPG signal intensities can be obtained. Different from the traditional technical route, the present disclosure provides a non-contact measurement method for determining the pressing location and measuring the pressure through a camera.

Abstract: An ion conductive layer can include a hygroscopic ion conductive material, such as a halide-based material. In an embodiment, the ion conductive layer can include an organic material, ammonium halide, or a combination thereof.

Abstract: An ion conductive layer can include a hygroscopic ion conductive material, such as a halide-based material. In an embodiment, the ion conductive layer can include an organic material, ammonium halide, or a combination thereof.

Abstract: A solid ion conductive layer can include a foamed matrix and an electrolyte material including a hygroscopic material. In an embodiment, the electrolyte material can include a halide-based material, a sulfide-based material, or any combination thereof. In another embodiment, the solid ion conductive layer can include total porosity of at least 30 vol % for a total volume of the solid ion conductive layer.

Abstract: This disclosure provides systems, methods, and apparatus related to metal-supported solid oxide electrochemical devices. In one aspect, a stainless steel support of a device is oxidized. A coating is deposited on an oxygen-electrode side of the stainless steel support of the device. The coating is operable to reduce chromium evaporation from the stainless steel support. A structure including an oxygen catalyst on the oxygen-electrode side of the device and a fuel catalyst on a fuel-electrode side of the stainless steel support of the device, with an electrolyte disposed between the oxygen catalyst and the fuel catalyst, is formed. The device is thermally treated at a temperature of about 10° C. to 400° C. above an operating temperature of about 600° C. to 800° C. of the device, the oxygen-electrode side of the device being in an oxidizing atmosphere and the fuel-electrode side of the device being in a reducing atmosphere.

Abstract: A solid ion conductive layer can include a foamed matrix and an electrolyte material including a hygroscopic material. In an embodiment, the electrolyte material can include a halide-based material, a sulfide-based material, or any combination thereof. In another embodiment, the solid ion conductive layer can include total porosity of at least 30 vol % for a total volume of the solid ion conductive layer.