670results about How to "High degree of reduction" patented technology

The invention belongs to a method for reducing graphite oxide, and relates to a method of adopting laser radiation for preparing reduction-oxidation graphene. No method in the existing technology can be used to produce a great deal of graphene, thus the material with important value can not be applied. The method comprises the following steps: pouring polar solvent in a quartz container, dissolving graphite oxide in polar solvent to prepare 0.01mg/ml-10mg/ml of polar graphite oxide solution; adjusting the pH value of the polar graphite oxide solution to 9-10, performing supersonic vibration for 1-2 hours; and using excimer laser with more than 1Hz of frequency, 157-353nm of wavelength and more than 40mJ/cm2 of energy density to irradiate the prepared graphite oxide solution to obtain the reduction-oxidation graphene. The method has the advantages that the preparation technology is simple, the preparation time is short; the preparation process can not cause environmental pollution; the prepared graphene product has high reductivity and good product quality; and the equipment is simple, and the method is suitable for industrial production.

A catalyst for synthesizing the intermediate oil from synthetic gas by Fischer-Tropsch reaction contains Co (5-35 Wt%), mesoporous ZrO2 as carrier (53-93), noble metal (0-2) and oxide of non-noble metal. Its preparing process includes such steps as impregnating said carrier in the aqueous solution of nitrate containing the oxide of non-noble metal or the alcohol solution of organic alkydester, and impregnating it in the equeous solution of cobalt nitrate and the nitrate (or chloride) or noble metal. It has high activity, stability, selectivity and mechanical performance.

The invention provides a three-dimensional face modeling method to achieve efficient three-dimensional face modeling. The method includes the steps that an original image and a standard model are obtained; the bone point information is obtained according to the standard model; a feature point is marked on the original portrait and the coordinate information of the feature point is recorded; first conversion is conducted on the original portrait; second conversion is conducted on the standard model; the surface of the standard model generated after the second conversion is conducted is unfolded according to the preset method to form a texture image; the original portrait generated after the first conversion is conducted is mapped to the texture image. The invention further provides a corresponding three-dimensional face modeling device for implementing the three-dimensional face modeling method. According to the technical scheme, the three-dimensional face modeling method and device are simple in operation mode, good in fitting effect and high in degree of reduction; meanwhile, the method and device are higher in implementation speed and higher in efficiency, the processes of implementation and calculation are simplified, the data collection process is simplified, practicability and adaptability of a system are improved, and the method and device have great advantages in situations of low requirement for the face depth information.

The invention discloses a dehydrogenation catalyst and a preparation method and application thereof. The dehydrogenation catalyst uses ammonia processed alumina as a carrier, chrome as an active component, and one or a plurality of potassium, manganese, cobalt, iron, nickel, copper and zinc as an additive, the additive is loaded onto the carrier by a co-impregnation method, and taking oxide weight content in the final catalyst as a reference, the catalyst comprises 2%-6% of chromium oxide, and 0.1-5% of the additive. The preparation method of the hydrocarbon dehydrogenation catalyst comprises the following processes: using ammonia to preprocess an alumina carrier, using the co-impregnation method to load one or a plurality of potassium, manganese, cobalt, iron, nickel, copper and zinc, and loading the active component chrome. The dehydrogenation catalyst can be used in dehydrogenation of propane for preparation of propylene. The low carbon alkane dehydrogenation catalyst prepared by the preparation method has the advantages of low active component chromium oxide content, good propylene selectivity, high activity and the like.

A catalyst for Fischer-Tropsch synthesis consists of Co 10.0-80.0 wt%, zirconia 15.0-85.0 wt% and other metal oxide 0-5.0 wt%, and is prepared by the codeposition process or soaking process. The catalyst has excellent stability, high reduction degree and high metal dispersivity.

The invention relates to a sludge drying and incinerating system on the basis of incineration of a waste grate furnace and a treatment method thereof. In the system, after entering a factory, sludge with the moisture content of 80 percent is unloaded into a front material storage bin; the sludge is quantitatively fed into a conditioning tank by a sludge screw conveyer at the bottom of the front material storage bin under a uniform speed; when the sludge enters the conditioning tank, dilution water and the sludge are added into the conditioning tank according to a weight ratio of the dilution water to the sludge of 1:1; when the sludge reaches a high limit liquid level, the sludge is stopped being added; the mixture is stirred uniformly to complete conditioning the sludge; the conditioned sludge with the moisture content of 90 percent is fed into a two-diaphragm vacuum air compressor through a sludge screw pump to be subjected to pressure filtration dehydration and steam heating drying, wherein a dehydrated and dried sludge cake has the moisture content of below 30 percent; after waste heat gas generated in the drying process of the sludge is vacuumized and condensed, wastewater is generated, enters a sewage treatment system to be treated and is discharged after reaching the standard; the waste gas is collected and enters a waste pond of a waste grate furnace incineration system; after the dried sludge is crushed by a crusher, the dried sludge and municipal domestic waste are fed into the grate incineration furnace to be incinerated according to a certain ratio; and the waste gas, fly ash, slags and the like which are generated in the incinerating process can be treated by the existing treatment system of a waste incineration power plant.

The invention relates to a preparation method of biocompatible photo-thermal response self-healing conductive hydrogel, which includes: preparing solution from N,N-dimethyl acrylamide monomer, potassium persulfate serving as initiator and N,N,N',N'-tetramethylethylenediamine serving as accelerator; then soaking graphene hydrogel into the monomer solution for solution displacement and standing; and finally, initiating polymerization reaction at the room temperature, so that the biocompatible photo-thermal response self-healing conductive hydrogel is prepared. The preparation method is simple in process, mild in reaction condition, short in reaction time and suitable for industrial production. The hydrogel uses the graphene as a three-dimensional network framework, the graphene is high in reduction degree, chemical stability, electric conductivity and mechanical strength and good in photothermal conversion effect, and the hydrogel shows good self-healing performance within the body temperature range and under near-infrared irradiation.

The invention relates to a polyvinylpyrrolidone modified graphene coated sulfur/porous carbon composite anode material and a preparation method thereof, which relates to a sulfur/carbon composite material applied to a lithium-sulfur secondary battery anode material and a preparation method of the composite material, and solves the technical problem of the existing lithium-sulfur battery anode material graphene-coated sulfur-containing composite material that the electrochemical property is low. The polyvinylpyrrolidone modified graphene coated sulfur/porous carbon composite material is characterized in that the outer surface of a sulfur/porous carbon composite material particle is uniformly coated with a polyvinylpyrrolidone modified graphene slab layer, a graphene conductive network is formed between every two adjacent particles, and a grading core-shell structure is formed. The preparation method comprises the steps of adding the sulfur/porous carbon composite material into graphene slurry modified by the polyvinylpyrrolidone, and mixing the sulfur/porous carbon composite material with the graphene slurry, and coating the sulfur/porous carbon composite material with the graphene slurry modified by the polyvinylpyrrolidone. The anode material is high in specific capacity, long in cycle life and good in high-rate performance.

The invention discloses a method for converting a form in a portable document format (PDF) document into an Excel form. The method comprises the following steps of: identifying boundary position coordinates of text blocks in the form of the PDF document, performing row division and column division on the form in the PDF document according to the boundary position coordinates of the text blocks to acquire a plurality of divided areas, determining the divided area of each text block, and writing the text blocks in the divided areas into the corresponding Excel form, so that an aim of converting the form in the PDF document without border lines or with incomplete border lines into the Excel form without depending on the border lines of the form in the PDF document is fulfilled.

The invention discloses a multi-line laser radar and GPS-based three-dimensional road construction method. According to the invention, the three-dimensional point cloud data of an all-angle and all-directional surrounding space can be dynamically collected through adjusting a multi-line laser radar and a high-precision GPS. Meanwhile, collected discrete non-associated sparse point cloud data are correlated through the absolute geographic position information acquired by the high-precision GPS, and then the absolute geographic position of each point in the point cloud data is calculated throughthe correlation. Therefore, radar point cloud data collected at different time and in different tracks can be fully and effectively utilized. Finally, the point cloud data which are dense enough areobtained through mutually correlated point cloud data. After that, dynamic objects in the point cloud data are filtered out through the differential method. In this way, the three-dimensional map of areal road can be constructed based on the remained point cloud data of static objects. The constructed three-dimensional map of the road is real, accurate and reliable. Meanwhile, dynamic moving objects can be removed through the differential method. The obtained three-dimensional map of the road is clean and relatively high in reducibility.

The invention relates to a hole tray seedling combination pot-in transplantor which is composed of a transplanter bottom frame, a hole tray seedling conveyor, a flowerpot conveyor, a seedling storing moving platform, a gathering device and a seedling combination taking device. The hole tray seedling conveyor and the flowerpot conveyor are installed inside the transplanter bottom frame at certain intervals. The seedling storing platform is fixed between the hole tray seedling conveyor and the flowerpot conveyor, and can store and convey flower seedlings. The gathering device is installed on a beam in the middle of the transplanter bottom frame, located over the flowerpot conveyor, and can gather the flower seedlings and scapes to meet the demands for flower seedling combination compactedness so that the combined flower seedlings and the scapes can be transplanted into flowerpots. A seedling combination grasping device is installed on the beam in the middle of the transplanter bottom frame and a beam on the upper portion of the transplanter bottom frame and can take and combine the hole tray seedlings of a whole tray. The hole tray seedling combination pot-in translator can finish the task of combining and transplanting the hole tray seedlings of the whole row at a time according to the combining transplanting characters of the hole tray seedlings in China, the degree of automation is high, the demands of different hole tray seedling types and combinations can be met, and universality and practicability are high.

The invention discloses a real-time three-dimensional virtual fitting method based on a mobile terminal. The method includes the steps of S1, establishment of a three-dimensional clothing model; S2, establishment of a three-dimensional human body model; and S3, a three-dimensional human body model dressing process and real-time three-dimensional stereoscopic display. The method has the advantagesof a simple principle, convenient operations, easy realization and the like.

The invention discloses a platinum (Pt)/reduced graphite oxide (RGO) nano composite material and a preparation method and application thereof. According to the preparation method, graphite oxide (GO) and a platinum metal precursor are reduced in one step by radiation and induction of a gamma ray or an electronic beam, thus obtaining the Pt/RGO nano composite material with the Pt load capacity being 1.0wt% to 15wt%; Pt nano particles are uniformly distributed on an RGO sheet layer, and the average diameter of the Pt nano particles is 1.8 nanometers; and the particle sizes of the Pt nano particles are within 2 nanometers. By virtue of the load capacity of the nano particles of platinum metal, the reducing degree of the GO can be increased, the conductivity of a product is improved, and the surface utilization rate of the RGO sheet layer is increased. Compared with the GO and pure graphene, the nano composite material prepared by the method has higher specific capacitance and higher high-current multiplying power when being applied to a super-capacitor electrode material.

The invention relates to a bridge crack image barrier detection and removal method based on a generative adversarial network. The method comprises the steps that first, multiple barrier pictures are collected, then tags are added, and the pictures with the tags are input into a Faster-RCNN for training; multiple barrier-containing crack pictures are collected, and barrier position calibration is performed through the Faster-RCNN; second, multiple barrier-free crack pictures are collected, and the pictures are turned over to amplify a dataset; third, the amplified dataset is input into the generative adversarial network to train a crack generation model; fourth, information erasure is performed on the positions of barriers in the barrier-containing crack pictures to obtain damaged images; and fifth, the damaged images are input into a cyclic discrimination restoration model for iteration, and then restored crack images are obtained. Through the method, barrier information in the crack pictures can be accurately detected and removed, the peak signal-to-noise ratio of the restored crack images is increased by 0.6-0.9dB compared with before, and therefore a large quantity of crack images with a high restoration degree are generated under a finite crack dataset condition.

A speed-change mode is changed from a stepless speed-change mode to a fixed speed-change mode while limiting or controlling the torque variation of an output member.

An ECU 100 performs speed-change control. In the speed-change control, if a request is provided to change the speed-change mode from the stepless speed-change mode to the fixed speed-change mode, the ECU 100 engages the clutch mechanism 350 after the rotational synchronization and the phase synchronization of the clutch mechanism 350. After engaging the clutch mechanism 350, the ECU 100 gradually reduces the output torque of a motor generator MG1 and gradually changes a reaction element from a sun gear 331 to a sun gear 341. At this time, the output torque of a motor generator MG2 is also gradually reduced. The output torque of the motor generator MG2 is corrected to limit or control a change in the output torque of a drive shaft 320, on the basis of the gear ratio between the rotational elements of a power dividing mechanism 300 and the reduction amount of the output torque of the motor generator MG1.

The invention discloses a self-adaptive low-light level image intensification method for reducing color cast, relates to low-light level image intensification methods, and aims to solve the problems that the image color cast is intensified when a conventional low-light level image intensification method is used, and a relatively bright area of an image is over-inhibited or over-intensified when being not well processed. The self-adaptive low-light level image intensification method comprises the following steps: firstly, converting a low-light level image into a RGB (Red, Green, Blue) color space, performing inverted S-shaped conversion, performing inversion, calculating minimum values of different pixel points of reversed images at three RGB channels so as to obtain initial dark channel images, and performing median filtering so as to obtain atmosphere light intensity estimation values; converting the inversion images into an HSV color space, and calculating self-adaptive intensification parameters by taking average gray level values of a V channel as average brightness; calculating transmissivity images according to atmosphere imaging equations, modifying so as to obtain transmissivity smooth images, with the atmosphere imaging equations, performing demisting operation on the three RGB channels of the inversion images, performing inversion, and performing S-shaped conversion, thereby obtaining finally intensified images. The self-adaptive low-light level image intensification method is applicable to intensification processing on images.

The invention discloses a handheld type large-scale three-dimensional measurement scanner system simultaneously having photography measurement and three-dimensional scanning functions. The handheld type large-scale three-dimensional measurement scanner system comprises two cameras at fixed positions, at least one pattern projector, a photography measurement module and a three-dimensional scanning module, wherein at least one of the two cameras is a multiplex camera used for both photography measurement and three-dimensional scanning; the photography measurement module is used for performing global photography measurement on a measured object through the multiplex camera and obtaining three-dimensional coordinates of a mark point on the surface of the object; the three-dimensional scanning module is used for performing three-dimensional measurement on the measured object through the two cameras and the pattern projector according to the obtained mark point serving as global positioning information of the measured object and obtaining three-dimensional contour data of the surface of the object. The handheld type large-scale three-dimensional measurement scanner system has the global photography measurement and three-dimensional scanning functions and is high in hardware integration degree, easy and convenient to operate and use, and high in cost-to-performance ratio.

The invention relates to a preparation method of a Ti<3+>-doped TiO2 composite graphene photocatalyst. Graphene oxide and gas-phase titanium dioxide (P25) are used as precursors to prepare the novel Ti<3+>-doped TiO2 composite graphene photocatalyst by a low-temperature vacuum activation method. Compared with the prior art, the invention can simultaneously implement Ti<3+> autodoping modification of TiO2 by one step, so that the photocatalyst has strong visible light response range; by carrying out reduction modification on the graphene oxide, the photocatalyst has higher electron transmission capacity; and the supporting modification is carried out on the graphene surface by using the TiO2 nanoparticles to generate a Ti-O-C chemical bond, thereby promoting the transfer of photoproduced electrons from TiO2 to the graphene surface. The prepared graphene-supported TiO2 photocatalyst has high ultraviolet and visible light activity, and also has high capacity for hydrogen production by composing water under visible light.

The invention discloses a preparation method of graphene, which comprises the following steps: (1) breaking graphite oxide into small pieces by a mechanical shearing or ball milling way; and (2) in a hydrogen nitrogen or hydrogen argon atmosphere, heating the small pieces of graphite oxide to 250-500 DEG C in the conditions that the volume concentration of hydrogen is 1-19%, the concentration of nitrogen or argon is 99-81%, the gas flow rate is 10-100mL/min and the heating speed is 5-35 DEG C per minute; preserving heat for 5-120min; and enabling the hydrogen nitrogen or hydrogen argon flow to drop to room temperature or naturally cooling to room temperature to obtain graphene. The invention provides a safe and low-cost method for preparing graphene through hydrogen reduction based on the reduction and stripping at low hydrogen concentration and low temperature of the small pieces of graphite oxide. The method is simple to operate, and the obtained graphene has relatively high reduction degree.

Highly reflective interference effect pigments with dark absorption color are obtained by reducing platy titanium dioxide. The present effect pigments may be used in cosmetics, plastics, inks, and coatings including solvent and water borne automotive paint systems.

The invention discloses a method for preparing graphene through photo-catalysis, belongs to the technical field of materials, and relates to a method for synthesizing graphene through the photo-catalytic reduction of an organic hydride donor, an ascorbic acid derivative, an amine derivative, an alcohol derivative or an inorganic hydride donor in a solution with an organic dye or a metal complex dye as a photo-catalyst. The method comprises the following steps: preprocessing graphite; oxidizing the graphite; peeling the obtained graphite oxide to form a graphene oxide; and carrying out photo-catalytic reduction of the graphene oxide under a light irradiation condition especially a visible light irradiation condition. The photo-catalytic system constructed in the invention allows a large amount of single-layer graphene having a high reduction degree to be obtained after the light irradiation especially the visible light irradiation for a short reaction time without any stabilizing agents.

The invention belongs to the traditional Chinese medicine diagnosis apparatus field and relates to a remote pulse diagnosis apparatus which comprises a sensing mechanism, a processing device, a pulse restorer and a pressure sensor. The sensing mechanism transmits measured pulse signals of patients to the processing device which comprises a circuit and a network transmission device which are used for processing sensor signals; the pulse restorer accepts the signals of the processing device and restores the pulses of the patients; remote physicians diagnose the pulse conditions by the pulse restorer and simultaneously apply different pressure to the pressure sensor on the pulse restorer to test three pulse-takings of each pulse; the pressure sensor transmits the signals to the processing device; and the processing device controls the sensing mechanism to test the pulse conditions of the patients by the applied pressure and positions from the remote physicians.