Abstract: A composite biochar for controlling heavy metal pollution and a process for producing the same, in particular enrichment of heavy metals such as arsenic and lead in soil with centipede grass, thereafter centipede grass is sintered with hydroxyapatite, sepiolite and chitosan, and compounded with microorganisms to produce said composite biochar; through the process of the present invention, heavy metals such as arsenic and lead are stably enriched or coated in said composite biochar, significantly reducing the potential hazard of arsenic and lead to the environment, and also providing new developmental ideas for treating heavy metal biomass.

Abstract: A porous biochar for improving heavy pollution and a method for producing the same. Said porous biochar is prepared as follows: arrowhead, which has excellent enrichment of lead, is used to absorb heavy metal lead in polluted water or artificial wetlands, simultaneously absorb heavy metal cadmium, thereafter is dried and treated as a biomass, and then the biomass is calcined in stages with a passivating agent in a high temperature environment, so as to heavy metals such as lead and cadmium be stably coated or enriched in a biochar, which is mixed with Pseudomonas aeruginosa having high resistant, to obtain the porous biochar; the porous biochar has high specific surface area, high porosity and excellent mechanical properties, is very stable under different acid-base environments and oxidizing conditions.

Abstract: Provided is a pressure-resistant underwater acoustic coating structure with a mesh structure interlayer, including an outer coating, a mesh structure interlayer, an inner coating, and a metal backing; wherein the outer coating is used for inputting acoustic waves, the mesh structure interlayer and the inner coating are used for consuming acoustic wave energy, and the metal backing is used for enriching a sound absorption mode; and the outer coating, the mesh structure interlayer, the inner coating and the metal backing are attached in sequence.

Abstract: Provided is a method for preparing a layered positive electrode material, comprising the following steps: (1) mixing layered nickel cobalt manganese hydroxide with a lithium source, carrying out primary sintering in an oxygen atmosphere, pulverizing and sieving to obtain a primary sintering product; and (2) carrying out secondary sintering on the primary sintering product in a sulfur dioxide atmosphere to obtain a layered positive electrode material, of which the chemical formula is NiaCobMnc(OH)2, wherein 0.3?a?0.95, 0.03?b?0.12, 0.01?c?0.10, and a+b+c=1. Also provided are a layered positive electrode material obtained by the preparation method and a lithium-ion battery comprising the layered positive electrode material.

Abstract: A receiver module that is communicatively connected to a plurality of Wi-Fi receiver chains is disclosed. The receiver module is configured to selectively switch the states of a plurality of Wi-Fi receiver chains between an “ON” state and an “OFF” state based on a signal quality parameter measured by each of these receiver chains.

Abstract: The example embodiments are directed to a system and method for forecasting load flexibility of a power grid. In one example, the method includes receiving temperature values associated with temperature set points of a plurality of loads that are included on a power grid, forecasting a flexibility of the plurality of loads using a polynomial-time mixed-integer non-linear programming (MINLP) optimization based on the received temperature values for the plurality of loads, and outputting information about the forecasted flexibility for display to a display device. The MINLP optimization performs the forecasting of the load flexibility on a fine-grained basis in comparison to conventional methods and is still fast enough that it can be computed in real-time.

Abstract: A payment reader is provided for use in a payment system. The payment reader includes a housing, a non-conductive cover covering the housing and forming an internal compartment, electronic circuitry within the internal compartment and surrounded by the cover, and a mesh of conductive traces provided on the cover and in communication with the electronic circuitry. The cover has an upper wall and interconnected side walls depending downwardly from the upper wall. The lower surface of the upper wall which faces the internal compartment has its entire surface area which is formed of at least one three-dimensional shape which extends outwardly from an x-y plane in the z-direction.

Abstract: A coherent detection-based high-speed chaotic secure transmission method includes: at a transmit terminal in a chaotic secure transmission system, optically coupling an optical chaotic carrier and transmission information by using an orthogonal basis to mask the transmission information by using a noise-like feature of the chaotic carrier, so as to obtain a chaotic masked signal; adding a fast phase disturbance and a fast polarization disturbance to the chaotic masked signal and transmitting the chaotic masked signal over an optical fiber transmission link; and at a receive terminal, obtaining the chaotic masked signal through coherent detection, compensating the chaotic masked signal for linear and nonlinear effects through digital signal processing, and using a polarization orthogonal basis- or phase orthogonal basis-based chaotic decryption algorithm to separate the chaotic carrier from the signal so as to complete decryption.

Abstract: A low-temperature high-performance thermoelectric material possesses a chemical formula of (AgyCu2?y)1?xTe1?zSez, wherein ?0.025?x?0.075, 0.6?y?1.4, 0<z?0.25, diffraction peaks of a main phase of the thermoelectric material are indexed as a cubic structure at room temperature of 300 K, a highest ZT value between 300 K and 673 K is in range of 0.4 to 1.6, an average ZT value (ZT)avg is in range of 0.2 to 1.4. The highest ZT value of this material at the room temperature is comparable to that of Bi2Te3, which is an excellent complement to existing low-temperature thermoelectric materials. At the same time, the present invention also indicates a new strategy to improve the low-temperature thermoelectric performance of Cu2X-based (here, X is S, Se, Te) materials, and lays a foundation for the application of Cu2X-based materials in the field of low-temperature thermoelectricity.

Abstract: A payment reader is provided for use in a payment system. The payment reader includes a housing, a non-conductive cover covering the housing and forming an internal compartment, electronic circuitry within the internal compartment and surrounded by the cover, and a mesh of conductive traces provided on the cover and in communication with the electronic circuitry. The cover has an upper wall and interconnected side walls depending downwardly from the upper wall. The lower surface of the upper wall which faces the internal compartment has its entire surface area which is formed of at least one three-dimensional shape which extends outwardly from an x-y plane in the z-direction.

Abstract: A low-temperature high-performance thermoelectric material possesses a chemical formula of (AgyCu2?y)1?xTe1?zSez, wherein ?0.025?x?0.075, 0.6?y?1.4, 0<z?0.25, diffraction peaks of a main phase of the thermoelectric material are indexed as a cubic structure at room temperature of 300 K, a highest ZT value between 300 K and 673 K is in range of 0.4 to 1.6, an average ZT value (ZT)avg is in range of 0.2 to 1.4. The highest ZT value of this material at the room temperature is comparable to that of Bi2Te3, which is an excellent complement to existing low-temperature thermoelectric materials. At the same time, the present invention also indicates a new strategy to improve the low-temperature thermoelectric performance of Cu2X-based (here, X is S, Se, Te) materials, and lays a foundation for the application of Cu2X-based materials in the field of low-temperature thermoelectricity.

Abstract: A method for short term load forecasting in a power grid includes obtaining historical data comprising power data, load data and weather data corresponding to time index data recorded from a location in a power distribution network of the power grid. The method further includes receiving power grid data comprising a plurality of power values, and a plurality of weather parameter values corresponding to a plurality of recent time instant values. The method also includes generating modified historical data using statistical techniques to rectify error conditions. The method further includes estimating one or more power values at a future time instant based on the modified historical data and the power grid data. The method also includes balancing load of the power distribution network based on the estimated one or more power values.

Abstract: An optimization-based method and system is disclosed to enable heterogeneous loads and distributed energy resources (DERs) to participate in grid ancillary services, such as spinning and non-spinning reserves, and ramping reserves. The method includes receiving inputs for decision parameters for optimizing an objective for obtaining flexible reserve power, solving the objective for obtaining flexible reserve power, determining a reserve power schedule for a prediction horizon for providing flexible reserve power based on the objective, generating a service bid based on the reserve power schedule for the power grid; and when the service bid is accepted, providing flexible reserve power to the power grid based on the service bid.

Abstract: The present invention discloses CrN thermoelectric material and its preparation method, which belongs to the field of thermoelectric materials. Here, we provide a study for thermoelectric properties, hardness, wear-resisting performance and thermal stability of CrN. These results show that CrN possesses excellent mechanical properties and thermal stability. The hardness of the bulk CrN sample is as high as 735.76 HV, which is far superior to most of thermoelectric materials. The thermogravimetric analysis test indicates that CrN remain stable at 873 K. Friction and wear test results demonstrate that the low friction coefficient (˜0.42) and good wear resistance of CrN. The maximum ZT value of 0.104 is observed at 848 K. In this way, CrN may be a promising thermoelectric material in extreme environment application which requires both mechanical and thermoelectric properties. Such as collision avoidance systems and outerspace.

Abstract: A method includes obtaining a voltage phasor, a current phasor and a mechanical rotor angle of a source end generator. A receiving end generator impedance and a line impedance between the source end generator and a receiving end generator is also estimated. Furthermore, a swing angle between an internal voltage of the source end generator and an internal voltage of the receiving end generator as a function of obtained voltage phasor, current phasor, mechanical rotor angle and the impedances is estimated. A power swing condition is then determined based on the estimated swing angle.

Abstract: A system for detecting false data injection attacks includes one or more sensors configured to each monitor a component and generate signals representing measurement data associated with the component. The system also includes a fault detection computer device configured to: receive the signals representing measurement data from the one or more sensors, receive a fault indication of a fault associated with the component, generate a profile for the component based on the measurement data, and determine an accuracy of the fault indication based upon the generated profile.

Abstract: A swinging LED lamp with a wireless charging function comprises a fixing portion and a magnetic suspension portion, wherein the fixing portion comprises a base and a lug boss formed at an upper end of the base; a main control circuit board and a power source end are arranged in the base; an electromagnet and a transmitting coil are arranged in the lug boss; the electromagnet and the transmitting coil are electrically connected with the power source end through the main control circuit board respectively.

Abstract: The invention is applied to control technologies, and provides an air conditioner control method and device, including collecting and storing current operating parameters of chillers, chilled water pumps and condenser water pumps of an air-conditioning system according to preset period; determining energy consumption increment of the air-conditioning system under operating status of an operating parameter to be adjusted relative to that under current operating status according to the current operating parameters and the operating parameter to be adjusted inputted by a user; and adjusting operating status of the air-conditioning system according to the operating parameter to be adjusted when the energy consumption increment is less than zero.

Abstract: A method and apparatus for separating real DVC via defects from nuisance based on Net Tracing Classification of eBeam VC die comparison inspection results are provided. Embodiments include performing an eBeam VC die comparison inspection on each via of a plurality of dies; determining DVC vias based on the comparison; performing a Net Tracing Classification on the DVC vias; determining S/D DVC vias based on the Net Tracing Classification; and performing a die repeater analysis on the S/D DVC vias to determine systematic design-related DVC via defects.

Abstract: A method for short term load forecasting in a power grid includes obtaining historical data comprising power data, load data and weather data corresponding to time index data recorded from a location in a power distribution network of the power grid. The method further includes receiving power grid data comprising a plurality of power values, and a plurality of weather parameter values corresponding to a plurality of recent time instant values. The method also includes generating modified historical data using statistical techniques to rectify error conditions. The method further includes estimating one or more power values at a future time instant based on the modified historical data and the power grid data. The method also includes balancing load of the power distribution network based on the estimated one or more power values.