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Water quality multi-index detection method on basis of ultraviolet-visible absorption spectrum

InactiveCN104034684ABig amount of dataAvoid situations that cannot comprehensively reflect multiple water quality indicatorsColor/spectral properties measurementsSewageWater supply
The invention relates to a water quality multi-index detection method on the basis of an ultraviolet-visible absorption spectrum. The method comprises the following steps: (1) establishing a water quality algorithm model comprising each water quality index; (2) measuring to obtain the ultraviolet-visible absorption spectrum of the to-be-detected water; (3) calculating to obtain a primary calculation value of each water quality index in the to-be-detected water according to the water quality algorithm model and the ultraviolet-visible absorption spectrum of the to-be-detected water; (4) locally correcting the primary calculation value of each water quality index in the to-be-detected water to obtain a detection result corresponding to each water quality index; and (5) comparing the obtained detection result corresponding to each water quality index and relevant water quality standard of each water quality index, judging whether the to-be-detected water quality exceeds the standard or not and issuing an alarm. By measuring the ultraviolet-visible full-wavelength absorption spectrum of the detected water, combining with the water quality algorithm model and correction parameters, each water quality index in the water can be synchronously calculated. The method can be widely suitable for monitoring and alarming for various kinds of surface water, various kinds of sewage, drinking water, and for control of sewage and water supply treatment processes.
Owner:北京金达清创环境科技有限公司 +1

Intelligent vehicle navigation system and method based on perception and autonomous calculation positioning navigation

The invention discloses an intelligent vehicle navigation system based on perception and autonomous calculation positioning navigation, and the system comprises an information storage module, a motor drive module, a positioning module, a perception module and an interaction communication module, wherein the information storage module, the motor drive module, the positioning module, the perception module and the interaction communication module are respectively connected with a central processor. The central processor, the drive module and the positioning module are used for achieving the positioning navigation and movement of an intelligent vehicle, and the perception module is used for achieving the stable control of the intelligent vehicle. The interaction communication module is used for achieving man-machine interaction. The navigation process comprises the steps: obtaining a generalized electronic map; obtaining initial position information of the vehicle and carrying out the positioning correction; obtaining the current position coordinates of the vehicle and target coordinates; and dynamically planning a driving path. According to the invention, the independent perception and feedback control of wheels are employed for the path of a local region and the control optimization, and the overall path planning and navigation are still implemented through a path planning algorithm. The system can monitor and distribute tasks in real time through a cellphone or tablet PC and a wireless network, and achieves the visualization and the real-time control.
Owner:TIANJIN UNIV

Method for preparing graphene composite material adsorbing polycyclic aromatic hydrocarbon pollutants

The invention discloses a method for preparing a graphene composite material adsorbing polycyclic aromatic hydrocarbon pollutants. The graphene composite material is prepared by dispersing the graphene in a precursor solution of a support body material and enabling the precursor of the support body material to generate cure reaction. The specific preparation steps and adsorption process are as follows: (1) preparing a graphene dispersion solution; (2) preparing the precursor solution of the support body material; (3) mixing the graphene dispersion solution and the precursor solution of the support body material; (4) initializing the precursor solution of the support body material for cure reaction, and adding graphene to obtain the graphene composite material; and (5) soaking the prepared graphene composite adsorption material in a polycyclic aromatic hydrocarbon solution, wherein the polycyclic aromatic hydrocarbon is adsorbed on the surface of graphene due to pi-pi mutual action between the graphene and the polycyclic aromatic hydrocarbon. According to the invention, the enrichment and adsorption capacities of the graphene on the polycyclic aromatic hydrocarbon are improved by means of large pi system and super large specific surface area.
Owner:淮安奥正网络科技有限公司

Resistance memory an a method for fabricating integrated circuit with same

The invention relates to a method for fabricating an integrated circuit with a resistance memory, comprising the following steps: providing an interlaminar dielectric layer comprising a core component area and a peripheral circuit area; forming a first interconnection structure and a second interconnection structure which are respectively formed by a blocking layer and a metal wiring structure in the interlaminar dielectric layer; forming a blocking dielectric layer on the interlaminar dielectric layer; etching the blocking dielectric layer to expose the metal wiring structure of the core component area; forming a first dielectric layer on the metal wiring structure; forming a first conductive layer covering the blocking dielectric layer and the first dielectric layer; forming a masking film on the first conductive layer; etching the first conductive layer and the blocking dielectric layer until the second interconnecting structure is exposed; keeping the first conductive layer and a blocking dielectric layer on the first interconnecting structure; and forming a second conductive layer and a third conductive layer respectively on the first conductive layer and the second interconnecting structure. Due to the adoption of the method for fabricating the integrated circuit with the resistance memory, when the resistance memory is formed, the interlaminar interconnection structures of the core component area and the peripheral circuit area can be also formed.
Owner:SEMICONDUCTOR MANUFACTURING INTERNATIONAL (BEIJING) CORP

Preparation method for silver-zinc oxide nano-composite structure

The invention discloses a preparation method for a silver-zinc oxide nano-composite structure. The method is simple, efficient and environmentally friendly. The method comprises the steps that the characteristic that electric charges carried by zinc oxide and electric charges carried by nano-silver are opposite is utilized, and nano-zinc oxide powder carrying the positive electric charges is added into nano-silver sol with the negative electric charges in a certain proportion; ultrasonic dispersion or mechanical agitation is performed, so that the nano-zinc oxide powder and the nano-silver sol are fully mixed; on the basis of electrostatic interaction, nano-silver particles are loaded onto the surface of the nano-zinc oxide; afterwards, the obtained solid product is separated through centrifugation or filtration, and the solid product is washed several times with ethyl alcohol and dried to obtain the target product. The preparation method is simple and easy and convenient to implement, the range of the raw materials is wide, neither a surface active agent nor a molecular coupling agent needs to be added, the method is low in energy consumption, free of pollution and environmentally friendly, the product is even in load, the size of loaded silver particles and the amount of load can be regulated and controlled, the interface is clean, and the method is beneficial to accurate regulation and control over the antibacterial activity, photocatalytic properties and surface-enhanced Raman scattering properties of silver-zinc oxide nano-composite structure.
Owner:QINGDAO UNIV OF SCI & TECH

Pure inorganic perovskite light emitting diode device manufacturing method

The invention provides a pure inorganic perovskite light emitting diode device manufacturing method. The method comprises the following steps: (1) an ITO transparent conductive glass substrate is subjected to standardized cleaning and drying and then pretreatment; (2) the ITO is transferred to a vacuum cavity, and evaporation on a hole injection layer and a transport layer is carried out; (3) a dual source co-evaporation method is adopted, and a pure inorganic CsPbX3 perovskite light emitting layer thin film is formed through evaporation; (4) an infrared thermal radiation device is used to carry out thermal treatment on the CsPbX3 perovskite film; and (5) an electron transport layer, an electron injection layer and a metal cathode are formed through thermal evaporation. The manufacturing process is simple and convenient, the manufacturing difficulty is low, the full vacuum evaporation method is adopted to manufacture the device, the manufacturing is easy, the repeatability is good, and the device performance is stable; and through the dual source co-evaporation manufacturing method, the smoothness and the uniformity of the thin film are improved, replacement of a subject material and an object material is facilitated, the ratio of the two can be changed, and regulation on the position of a light emitting peak is realized.
Owner:SUZHOU UNIV

Deepwater semi-submerged drilling platform

ActiveCN101954959ASmall footprintConvenient pre-connection workFloating buildingsEngineeringDrilling riser
The invention relates to a deepwater semi-submerged drilling platform, which comprises floating tanks, an upright post, a transverse supporting rod and a main deck, wherein a drilling block is arranged above a moon pool in the middle of the main deck; and a derrick is arranged on the drilling block. The deepwater semi-submerged drilling platform is characterized in that: a half derrick space for pre-connecting a drilling tool is reserved on one side of the derrick; a water isolating pipe, a drilling stem, a blowout preventer and a production tree are arranged on the main deck around the moon pool respectively; and an anchor moored positioning and dynamic positioning combined position system which consists of front and back four groups of anchor gears distributed on the left and right sides of the main deck is adopted, each group of anchor gears are provided with 3 anchor chains, a dynamic positioning system consists of 8 dynamic thrusters capable of rotating 360 degrees at the front and back four corners of the bottom of the two floating tanks. In the deepwater semi-submerged drilling platform, the maximum operation water depth is up to 3,000 meters, the maximum drilling depth is up to 12,000 meters, and the maximum variable load is up to 9,000 tons. The deepwater semi-submerged drilling platform can operate in the South China Sea, Southeast Asian sea area and West Africa sea area with severe sea conditions efficiently and safely.
Owner:CHINA NAT OFFSHORE OIL CORP +1

Quasi-cyclic low-density odd-even check convolution code coding-decoding system and coding-decoding method thereof

The invention provides a quasi-cyclic low-density odd-even check convolution code coding-decoding system and a coding-decoding method thereof and belongs to the technical field of digital signals, wherein the system comprises a code word constructor, a coder module and a decoder module; and the code word constructor generates check mother matrixes, transfers the corresponding information such as data access addresses and translocation factors to the coder module and the decoder module respectively and stores the information in the respective mother matrix memory cells, the coder module obtains the input data from the information source and transfers the coded output data to a channel, and the decoder module obtains the input information from the channel and outputs the decoded information. By adding the quasi-cyclic unit matrixes, the system achieves the better decoding performance by less iterations so that the hardware cost is obviously reduced; the quasi-cyclic unit matrixes adopt the low-density check code structure, and the concurrent operation can be performed in both coding and decoding process so that the decoding clock delay is effectively reduced, and the throughput rateis greatly improved.
Owner:SHANGHAI JIAO TONG UNIV
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