Abstract: A lead-free insulating ceramic coating zinc oxide arrester valve and a method for manufacturing thereof are disclosed. In an embodiment a method includes preparing an initial powder from starting materials with the following mass percentages: ZnO: 86-95%; Bi2O3: 1.0-3.0%; Co3O4: 0.5-1.5%; Mn3O4: 0.2-1.0%; Sb2O3: 3.0-9.0 %; NiO: 0.2-1.0%; and SiO2: 1.0-3.0%, preparing a ceramic coating powder by mixing the initial powder, deionized water and first grinding balls, milling the mixture, and drying and pulverizing the mixture, preparing a ceramic coating slurry by mixing a PVA solution, the ceramic coating powder and second grinding balls and milling the mixture, applying the ceramic coating slurry to a green body, heating and debinding the ceramic coating slurry with the green body thereby forming a resistor element and sintering the resistor element thereby obtaining a zinc oxide surge arrester valve block having a lead-free insulating ceramic coating.

Abstract: A lead-free insulating ceramic coating zinc oxide arrester valve and a method for manufacturing thereof are disclosed. In an embodiment a method includes preparing an initial powder from starting materials with the following mass percentages: ZnO: 86-95%; Bi2O3: 1.0-3.0%; Co3O4: 0.5-1.5%; Mn3O4: 0.2-1.0%; Sb2O3: 3.0-9.0%; NiO: 0.2-1.0%; and SiO2: 1.0-3.0%, preparing a ceramic coating powder by mixing the initial powder, deionized water and first grinding balls, milling the mixture, and drying and pulverizing the mixture, preparing a ceramic coating slurry by mixing a PVA solution, the ceramic coating powder and second grinding balls and milling the mixture, applying the ceramic coating slurry to a green body, heating and debinding the ceramic coating slurry with the green body thereby forming a resistor element and sintering the resistor element thereby obtaining a zinc oxide surge arrester valve block having a lead-free insulating ceramic coating.

Abstract: Embodiments of the invention may include a ready-to-assemble chair, comprising a seat assembly, wherein said seat assembly comprises a top seat surface, at least three sides, and an underside, wherein the underside has an internal cavity defined by the at least three sides; a seat back assembly, wherein said seat back assembly is configured to fit substantially within the internal cavity of the underside of the seat assembly in a flat orientation when said chair is disassembled; and at least three legs. Some aspects of the present invention may include a method of assembly of a ready-to-assemble chair, as well as methods of packaging the same.

Abstract: A ready-to-assemble upholstered and non-upholstered chair consisting of factory assembled sub-assemblies reducing the number of overall parts and assembly hardware which decreases the packaged cubic measure allowing more units to be loaded into shipping containers and trailers, inventoried in warehouses and distribution centers and displayed in retail outlets thereby reducing transportation and handling costs, while simplifying and expediting the assembly process. The invention includes a seat box sub-assembly so constructed to allow a portion of the chair back leg sub-assembly to nest therein reducing the package profile and cubic measure, as well as a front leg sub-assembly. The front leg and back leg sub-assemblies are assembled utilizing a left and right tenoned side rail which inserts into mortises on the front and back leg assemblies. The leg sub-assemblies are secured with a metal bolt, threaded on each end, housed longitudinally within a routed channel running on the exterior face of each side rail.

Abstract: A method for a MEMS device comprises determining in a computer system, a first driving signal for the MEMS device in response to a first time delay and to a base driving signal, applying the first driving signal to the MEMS device to induce the MEMS device to operate at a first frequency, determining a second driving signal for the MEMS device in response to a second time delay and to the base driving signal, applying the second driving signal to the MEMS device to induce the MEMS device to operate at a second frequency, determining a first quality factor associated with the MEMS device in response to the first frequency and the second frequency, determining a quality factor associated with the MEMS device in response to the first quality factor, and determining whether the quality factor associated with the MEMS device, exceeds a threshold quality factor.

Abstract: A ready-to-assemble upholstered and non-upholstered chair consisting of factory assembled sub-assemblies reducing the number of overall parts and assembly hardware which decreases the packaged cubic measure allowing more units to be loaded into shipping containers and trailers, inventoried in warehouses and distribution centers and displayed in retail outlets thereby reducing transportation and handling costs, while simplifying and expediting the assembly process. The invention includes a seat box sub-assembly so constructed to allow a portion of the chair back leg sub-assembly to nest therein reducing the package profile and cubic measure, as well as a front leg sub-assembly. The front leg and back leg sub-assemblies are assembled utilizing a left and right tenoned side rail which inserts into mortises on the front and back leg assemblies. The leg sub-assemblies are secured with a metal bolt, threaded on each end, housed longitudinally within a routed channel running on the exterior face of each side rail.

Abstract: A ready-to-assemble upholstered and non-upholstered chair consisting of factory assembled sub-assemblies reducing the number of overall parts and assembly hardware which decreases the packaged cubic measure allowing more units to be loaded into shipping containers and trailers, inventoried in warehouses and distribution centers and displayed in retail outlets thereby reducing transportation and handling costs, while simplifying and expediting the assembly process. The invention includes a seat box sub-assembly so constructed to allow a portion of the chair back leg sub-assembly to nest therein reducing the package profile and cubic measure, as well as a front leg sub-assembly. The front leg and back leg sub-assemblies are assembled utilizing a left and right tenoned side rail which inserts into mortises on the front and back leg assemblies. The leg sub-assemblies are secured with a metal bolt, threaded on each end, housed longitudinally within a routed channel running on the exterior face of each side rail.

Abstract: The application relates to a spreading signal generating method, generating device, receiving method and receiving device. The spreading signal generating method comprises: generating a first spreading signal component and a second spreading signal component, wherein the first spreading signal component and the second spreading signal component each comprise a spreading code and a binary subcarrier, the spreading code of the first spreading signal component is the same as the spreading code of the second spreading signal component, the binary subcarrier of the first spreading signal component is different from the binary subcarrier of the second spreading signal component; and modulating the first spreading signal component and the second spreading signal component with radio frequency (RF) carriers so as to generate the spreading signal, where a phase of RF carrier for modulating the first spreading signal component is different from a phase of RF carrier for modulating the second spreading signal component.

Abstract: A ready-to-assemble upholstered and non-upholstered chair consisting of factory assembled sub-assemblies reducing the number of overall parts and assembly hardware which decreases the packaged cubic measure allowing more units to be loaded into shipping containers and trailers, inventoried in warehouses and distribution centers and displayed in retail outlets thereby reducing transportation and handling costs, while simplifying and expediting the assembly process. The invention includes a seat box sub-assembly so constructed to allow a portion of the chair back leg sub-assembly to nest therein reducing the package profile and cubic measure, as well as a front leg sub-assembly. The front leg and back leg sub-assemblies are assembled utilizing a left and right tenoned side rail which inserts into mortises on the front and back leg assemblies. The leg sub-assemblies are secured with a metal bolt, threaded on each end, housed longitudinally within a routed channel running on the exterior face of each side rail.

Abstract: The application relates to a generating method and device, receiving method and device for a dual-frequency constant envelope multiplexed signal with four spreading signals. According to the method, the four baseband spreading signals s1(t), s2(t), s3(t), s4(t) can be modulated to a frequency f1 and a frequency f2 respectively, so as to generate the constant envelope multiplexed signal on a radio carrier frequency fp=(f1+f2)/2, where the signals s1(t) and s2(t) are modulated on the frequency f1 with carrier phases orthogonal to each other, the signals s3(t) and s4(t) are modulated on the frequency f2 with carrier phases orthogonal to each other, f1>f2.

Abstract: The application relates to a spreading signal generating method, generating device, receiving method and receiving device. The spreading signal generating method comprises: generating a first spreading signal component and a second spreading signal component, wherein the first spreading signal component and the second spreading signal component each comprise a spreading code and a binary subcarrier, the spreading code of the first spreading signal component is the same as the spreading code of the second spreading signal component, the binary subcarrier of the first spreading signal component is different from the binary subcarrier of the second spreading signal component; and modulating the first spreading signal component and the second spreading signal component with radio frequency (RF) carriers so as to generate the spreading signal, where a phase of RF carrier for modulating the first spreading signal component is different from a phase of RF carrier for modulating the second spreading signal component.

Abstract: The application relates to a generating method and device, receiving method and device for a dual-frequency constant envelope multiplexed signal with four spreading signals. According to the method, the four baseband spreading signals s1(t), s2(t), s3(t), s4(t) can be modulated to a frequency f1 and a frequency f2 respectively, so as to generate the constant envelope multiplexed signal on a radio carrier frequency fp=(f1+f2)/2, where the signals s1(t) and s2(t) are modulated on the frequency f1 with carrier phases orthogonal to each other, the signals s3(t) and s4(t) are modulated on the frequency f2 with carrier phases orthogonal to each other, f1>f2.

Abstract: The application relates to a spreading signal generating method, generating device, receiving method and receiving device. The spreading signal generating method comprises: generating a first spreading signal component and a second spreading signal component, wherein the first spreading signal component and the second spreading signal component each comprise a spreading code and a binary subcarrier, the spreading code of the first spreading signal component is the same as the spreading code of the second spreading signal component, the binary subcarrier of the first spreading signal component is different from the binary subcarrier of the second spreading signal component; and modulating the first spreading signal component and the second spreading signal component with radio frequency (RF) carriers so as to generate the spreading signal, where a phase of RF carrier for modulating the first spreading signal component is different from a phase of RF carrier for modulating the second spreading signal component.

Abstract: The application relates to the satellite navigation signal, generating method, generating device, receiving method and receiving device. The navigation satellite signal generating device includes a baseband signal generator, a multiplexed signal generator and a modulator. The baseband signal generator is provided to generate a first baseband signal S1, a second baseband signal S2, a third baseband signal S3, and a fourth baseband signal S4. The multiplexed signal generator is provided to set an amplitude and a phase of an in-phase baseband component and an amplitude and a phase of a quadrature-phase baseband component of a signal into which the first baseband signal S1, the second baseband signal S2, the third baseband signal S3 and the fourth baseband signal S4 are multiplexed, so as to generate a multiplexed signal with constant envelope. The modulator is provided to modulate the multiplexed signal with constant envelope to a radio frequency, so as to generate the navigation satellite signal.

Abstract: The application relates to the satellite navigation signal, generating method, generating device, receiving method and receiving device. The navigation satellite signal generating device includes a baseband signal generator, a multiplexed signal generator and a modulator. The baseband signal generator is provided to generate a first baseband signal S1, a second baseband signal S2, a third baseband signal S3, and a forth baseband signal S4. The multiplexed signal generator is provided to set an amplitude and a phase of an in-phase baseband component and an amplitude and a phase of a quadrature-phase baseband component of a signal into which the first baseband signal S1, the second baseband signal S2, the third baseband signal S3 and the forth baseband signal S4 are multiplexed, so as to generate a multiplexed signal with constant envelope. The modulator is provided to modulate the multiplexed signal with constant envelope to a radio frequency, so as to generate the navigation satellite signal.

Abstract: The present invention relates to the communications field, and discloses a method for measuring network performance. With the method, a receiving end receives a performance measurement message corresponding to a data stream, obtains a performance measurement parameter corresponding to the data stream, so that stream-based network performance measurement can be implemented. The present invention also discloses an apparatus and a system for measuring network performance, and another method for measuring network performance.

Abstract: The present invention discloses an ice pack including a main body. A center of the main body is a bag fixing part and two ends of the bag fixing part are extended respectively with a first fastener and a second fastener which can be connected and fixed together. The bag fixing part is connected and fixed to a bag through a hook and loop fastener, an interior of the bag is filled with refrigerant and a side of the bag is provided with a hook and loop fastener, allowing the bag to be fixed on the main body. On the other hand, the other side of the bag is extended and protruded with positioning parts which are fixed at two sides of a user's nose bridge, and the bag is stably put on a forehead.

Abstract: A positioning assembly for securing top box of window blinds or shades includes a positioning member which includes multiple hooking members, guide posts and two guide members. An adjustment member includes multiple lugs extending from a top thereof and each lug has an insertion hole. An extension splits from the adjusting member so as to insert into the slot of the positioning member. An engaging portion extends from a bottom of the adjustment member. Multiple springs are mounted to the guide posts and biased between the lugs and the guide posts which are inserted into the insertion holes of the lugs. The top box having an open side which is defined between a first lip and a second lip, wherein the first lip is hooked to one of the hooking members and the second lip is engaged with the engaging portion of the adjustment member.