165results about How to "Densely distributed" patented technology

A transmitter subsystem generates an optical signal which contains multiple subbands of information. The subbands have different polarizations. For example, in one approach, two or more optical transmitters generate optical signals which have different polarizations. An optical combiner optically combines the optical signals into a composite optical signal for transmission across an optical fiber. In another aspect, each optical transmitter generates an optical signal containing both a lower optical sideband and an upper optical sideband (i.e., a double sideband optical signal). An optical filter selects the upper optical sideband of one optical signal and the lower optical sideband of another optical signal to produce a composite optical signal.

A transmitter subsystem generates an optical signal which contains multiple subbands of information. The subbands have different polarization. For example, in one approach, two or more optical transmitters generate optical signals which have different polarization. An optical combiner optically combines the optical signals into a composite optical signal for transmission across an optical fiber. In another aspect, each optical transmitter generates an optical signal containing both a lower optical sideband and an upper optical sideband (i.e., a double sideband optical signal). An optical filter selects the upper optical sideband of one optical signal and the lower optical sideband of another optical signal to produce a composite optical signal.

A transmitter subsystem generates an optical signal which contains multiple subbands of information. The subbands have different polarizations. For example, in one approach, two or more optical transmitters generate optical signals which have different polarizations. An optical combiner optically combines the optical signals into a composite optical signal for transmission across an optical fiber. In another approach, a single optical transmitter generates an optical signal with multiple subbands. The polarization of the subbands is varied, for example by using a birefringent crystal. In another aspect of the invention, each optical transmitter generates an optical signal containing both a lower optical sideband and an upper optical sideband (i.e., a double sideband optical signal). An optical filter selects the upper optical sideband of one optical signal and the lower optical sideband of another optical signal to produce a composite optical signal.

The invention discloses a circuit board, comprising a dielectric layer, a first conductive circuit layer and a second conductive circuit layer, wherein the dielectric layer is provided with a first surface and a second surface opposite to each other, at least one first hole is formed from the second surface to the first surface, the first hole is filled with plated metal to form a conductive hole, the first conductive circuit layer is embedded into one side of the first surface of the dielectric layer, the second conductive circuit layer is formed on the second surface of the dielectric layer, at least one conductive circuit in the first conductive circuit layer and the conductive metal in the first hole communicates with each other, and the conductive metal in the first hole is provided with a first end face that is exposed from one side of the first surface. The invention also provides a manufacture method of the circuit board.

The invention provides an earthquake data recording and analyzing system based on mobile phone earthquake monitoring network and belongs to the field of earthquake monitoring. The earthquake data recording and analyzing system comprises an earthquake monitoring network server and mobile phone user terminals. Mass measuring nodes of the earthquake monitoring network constituted by multiple mobile phone user terminals are densely distributed at random. By utilization of the characteristics of low cost and random widely distribution of mobile phones, the measured data that shocking and terrestrial magnetism of each location continuously changes along with time before, during and after the earthquake can be easily obtained, especially the whole-process earthquake data of the crucial earthquake monitoring points or other adjacent places. The construction cost of the earthquake monitoring network can be greatly reduced, and the monitoring nodes are densely distributed, relatively even and wide in covering surface. Therefore, The earthquake data recording and analyzing system based on the mobile phone earthquake monitoring network can effectively solve the problems that the early-warning data, the post-earthquake data and the aftershock data of professional seismic stations are not sufficient, and lays the foundation for the big data research and analysis of the earthquake properties and early warning.

The invention relates to the field of nanometer materials, in particular to a nano zero-valent iron carbon material and a preparation method and application thereof. The material comprises a carbon layer and superfine nanoscale zero-valent iron uniformly distributed in the carbon layer, the iron content is as high as 92-97%, the particle size of the nanoscale zero-valent iron is 3-8 nm, further, the elemental composition of the nanoscale zero-valent iron carbon material further comprises at least one of oxygen and nitrogen, coordination bonds exist between iron and nitrogen, the nano zero-valent iron carbon material is a porous material, the specific surface area is 120-140 m < 2 > / g, the pore volume is 0.3-0.4 cm < 3 > / g, and the pore diameter is 2-3 nm. The nano zero-valent iron carbon material provided by the invention has good activity of degrading organic pollutants, and can be used in sewage treatment of organic matter pollution.

The invention relates to improvement of the pouring polyurethane elastomer, characterized in that the multi-alcohols is the gathering caprolactone and the enlarging chain agent accounts for the 7.5-30wt percentage of the gross of performed polymer and it includes three complex enlarging chain agent which is 1,4-butanediol, the hydroquinone-double(beta-ethoxyl) aether and the resorcin-double(beta- ethoxyl) eather at last. The composed performed polymer is carried under the inertance gas coverage; the enlarging chain agent is added twice at last and the action of the enlarging chain is finished one minute approximately. Comparing with the existing polyurethane, the polyurethane provided by the invention is advanced greatly in the temperature resistance and resistance to wear; the application temperature can be reached to the 100-150 degree and it can be improved 20-70 degree comparing the existing pouring polyurethane elastomer; the resistance to wear can be improved 30% upwards.

The invention relates to the field of industrial production, in particular to foam glass which has the advantages that the strength of the foam glass is improved and meanwhile the heat conductivity factor of the foam glass is reduced. The foam glass comprises the following components in parts by weight: 90-95 parts of glass, 1-5 parts of silicon micro-powder, 1-3 parts of foaming agent, 1-2 parts of modification additive and 0.5-3 parts of foaming accelerator. The production method of the foam glass comprises the following steps of: mixing and crushing 90-95 parts of glass, 1-5 parts of silicon micro-powder, 1-3 parts of foaming agent, 1-2 parts of modification additive and 0.5-3 parts of foaming accelerator to form mixture powder; melting the mixture powder into mixture liquid at the melting temperature of 700-850 DEG C; then uniformly foaming the mixture liquid at the temperature of 650-720 DEG C and keeping the uniform foaming for 30-50 minutes; starting to anneal when cooling to 500-550 DEG C after the uniform foaming is finished; and annealing for 37-38 hours to normal temperature for shaping.

The present invention provides an electronic assembly 400 and a method for its manufacture 800, 900, 1000 1200, 1400, 1500, and 1700. The assembly 400 uses no solder. Components 406 or component packages 402, 802, 804, 806 with I / O leads 412 are placed 800 onto a planar substrate 808. The assembly is encapsulated 900 with electrically insulating material 908 with vias 420, 1002 formed or drilled 1000 through the substrate 808 to the components' leads 412. Then the assembly is plated 1200 and the encapsulation and drilling process 1500 repeated to build up desired layers 422, 1502, 1702. The planar substrate 808 may be a flexible substrate 2016 allowing bending of an assembly 2000 to fit into various enclosures.

The invention discloses a nano precious metal load polymer vesica and a preparing method thereof. The method includes the steps that firstly, phenolic resin prepolymer is prepared to serve as a reaction precursor, a P4VP-PF-PSt composite vesica is further prepared through a hydrothermal method in combination with functional monomer styrene and 4-vinylpyridine, then the surface of the vesica is evenly loaded with precious metal nano particles by adding a salt solution and a reduction agent of the precious metal, and a nano hybrid material is obtained. The preparing method is simple, environmentally friendly, suitable for industrialized production and capable of being used for preparing vesicae of different particle sizes and different thin film thicknesses by adjusting the reaction temperature, the reaction time, solvents and surfactant.