81results about How to "Ease of commercialization" patented technology

The present invention discloses a preparation method of graphitized carbon nano material which relates to a preparation method of carbon nano material. Problems like high cost and environment pollution in existing graphitized carbon nano material process are solved through the invention. The method is as following: 1. pretreatment of carbon source; 2. energizing agent in solvent and carbon source after pretreatment; 3. pre-carbonization; 4. heat treating; 5. acid treatment; 6. physical activation or chemical activation. The invention has features like simple process, little pollution to environment, low cost, simple equipment and easy commercialization.

The invention relates to a treatment method of waste containing organic matters, in particular to two-stage plasma gasifying, melting and cracking method and device of the waste containing organic matters, belonging to the field of gasifying, melting and cracking techniques. In the invention, the serious defects of high energy consumption of the waste containing organic matters and more flying ash during the plasma arc melting and cracking are solved, thereby thoroughly utilizing the energy of the organic matters and maximizing the treating efficiency, thoroughly cracking the tar, reducing the generation rate of Dioxin, obtaining synthesis gas with high quality and high heat value as much as possible, providing guarantee for the subsequent gasification power generation, the hydrogen energy recovery or the production of green liquid fuel, simultaneously finishing one-step recovery of noble metals and direct utilization of glass bodies in the field of building materials, laying foundation for the large-scale commercial development and application of the energy of the waste containing organic matters, and thoroughly solving the possible pollutant discharging problem in the gasifying process of the organic matters, particularly the dangerous waste.

The invention discloses a method for preparing a metallic compound / porous carbon nanorod of a hierarchy structure, and belongs to the technical field of new energy. The method comprises the following steps: firstly, mixing inorganic transition metal salt, 1,4-naphthalic acid and water so as to obtain a turbid solution of an organic acid complex of metal ions; secondly, under a high-temperature hydrothermal condition, performing reaction for a certain period of time so as to generate a precursor of a metal organic frame; and finally, in the protection of an inert gas, performing high-temperature thermal treatment control, thereby obtaining the metallic compound / porous carbon nanorod. As a sodium-ion battery negative material, the metallic compound / porous carbon nanorod shows excellent multiplying power characteristic and cycling stability. The method has the advantages of being simple in preparation process, low in equipment requirement, rich in raw material resource, low in production cost, short in synthesis cycle, gentle in reaction condition, high in yield, free of template removal, good in material property and the like, industrial production can be easily achieved, and a product can be used in the field of electrochemical energy storage.

The invention relates to a method for synthesizing a tungsten carbide / graphite carbon nano composition through in-situ synchronization, which relates to a method for preparing the tungsten carbide / graphite carbon nano composite. The method solves the problem of nonuniform tungsten carbide distribution in the prior art for preparing the tungsten carbide / graphite carbon nano composite. The method comprises: firstly, pretreatment of carbon sources; secondly, dissolution of a graphitized catalyst and tungsten sources into a solvent, addition of the pretreated carbon sources, and dispersion; thirdly, pre-carbonization; fourthly, heat treatment; fifthly, acid treatment; and sixthly, physical activation or chemical activation. The method has the advantages of simple technology, uniform tungsten carbide distribution, small environmental pollution, low cost and simple required equipment, and is easy to realize commercialization.

The invention relates to a preparation method and application of an electrochemical sensor for detection of heavy metal lead contaminants and belongs to the technical field of electrochemical detection. The preparation method is characterized by including; performing synthesis to obtain a Fe-MOFs nano material, reducing palladium-platinum bimetallic nanoparticles onto the Fe-MOFs nano material, and mixing a hairpin type DNA signal probe with the composite material to obtain a biological signal probe; performing layer-by-layer self-assembly through rGO-TEPA and avidin for fixing of '8-17'DNAzyme to obtain the electrochemical sensor for detection of the heavy metal lead contaminants. The sensor is successfully applied to detection of lead contaminants in the environment. The preparation method and application has the advantages of high flexibility, high specificity and rapid and convenient detection; experimental evidence is provided for research of lead contamination detection technology, and new concepts and new technology platforms are provided for monitoring the lead contaminants in the environment are provided.

The invention discloses a preparation method of ordered mesoporous titania / silver photocatalyst, relating to a preparation method of titania / silver and aiming to solve the technical problems of small specific surface area, poor orderliness and low photocatalytic activity of mesoporous titania / silver photocatalyst prepared by prior arts. The preparation method comprises the steps of silver solution preparation, titanium precursor preparation, titania / silver gel preparation, and heat treatment. The inventive photocatalyst has specific surface area of 120-160 m<2> / g, has the advantages of uniform mesopores and high catalytic activity; can be applied to photocatalysis field, and water treatment field of lake, ocean, municipal sewage and industrial sewage.

The invention relates to a preparation method of a sequential black mesoporous titanium dioxide visible light catalyst film. The invention aims to solve the problems that titanium dioxide prepared by the existing method cannot effectively absorb visible light of sunlight and a surface-hydrogenated titanium dioxide (black titanium dioxide) catalyst is difficult to recover. The preparation method is implemented by the following steps: 1, soaking: soaking a porous ceramic film into titanium dioxide sol; 2, drying: drying at the temperature of 60 to 90 DEG C for 12 to 24 hours to obtain a porous ceramic film of the titanium dioxide sol; 3, performing heat treatment: maintaining the temperature of 400 to 800 DEG C for 2 to 8 hours to obtain the porous ceramic film of the titanium dioxide sol after heat treatment; and 4, hydrogenating: hydrogenating for 2 to 10 hours under the condition of protective gas to obtain the sequential black mesoporous titanium dioxide visible light catalyst film. The preparation method of the sequential black mesoporous titanium dioxide visible light catalyst film is applied to the field of water treatment.

The invention provides a preparation method of a molybdenum disulfide-black titanium dioxide composite visible-light-driven photocatalyst for hydrogen production, and relates to a preparation method of a visible-light-driven photocatalyst for hydrogen production. According to the preparation method, the technical problems that an existing molybdenum disulfide-titanium dioxide composite visible-light-driven photocatalyst is low in visible light utilization rate and hydrogen production efficiency are solved. The preparation method comprises the steps of 1 reagent mixing; 2 hydrothermal reaction performing; 3 thermal treating; 4 hydrogenating. The preparation method has the advantages that the prepared molybdenum disulfide-black titanium dioxide composite visible-light-driven photocatalyst for hydrogen production can efficiently produce hydrogen on the condition of visible light and can continuously produce the hydrogen under continuous six-hour radiation of the visible light and is not only high in hydrogen production efficiency but also good in stability. The preparation method is simple in preparation technology and experiment equipment, low in cost, high in benefit and capable of easily achieving commercialization.

The invention successfully develops a sensor for the sensitive detection of thrombin sensitive protein-1 (TSP-1) based on the signal amplification strategy of a cerium metal organic framework @gold nanocomposite (Ce-MOF@Au) and gold-platinum-ruthenium nanocomposite (AuPtRu NP) using an aptamer as a target capture agent. The synthesized AuPtRu NP can be used not only as a catalyst for catalyzing hydrogen peroxide, but also as a nanocarrier to capture an amino group (-NH2) to terminate a single-stranded DNA (S1) to obtain a signal probe SP (AuPtRu NP / S1). Ce-MOF@Au is obtained by in-situ reduction and used as an electrode modification material of a glassy carbon electrode. When the detection solution contains an electrochemical matrix containing H<2>O<2>, AuPtRu NP can oxidize H<2>O<2> to obtain an enhanced signal. The invention shows a very low detection limit of 0.13 fg mL<-1> in the linear range from 1 fg mL<-1> to 10 ng mL<-1>. In addition, the trimetal signal amplification aptamer sensor based on cerium metal organic framework @gold nanocomposite and gold-platinum-ruthenium nanocomposite for thrombin sensitive protein-1 detection is shown to be directly usable for the detectionof clinical actual samples.

A method for preparing ordered mesoporous titanium dioxide photocatalyst relates to a method for preparing titanium dioxide photochemical catalyst. The method solves the problem that photocatalyst prepared by an existing method is small in specific surface of mesoporous titanium dioxide, poor in order of mesoporous, and accordingly low in photocatalysis activity. The method sequentially includes the following steps: (1) functionalizing surfactant; (2) preparing titanium sol; (3) aging the titanium sol to obtain dried gel; and (4) subjecting the dried gel to heat treatment to obtain the ordered mesoporous titanium dioxide photochemical catalyst. For the prepared photochemical catalyst, the specific surface of mesoporous titanium dioxide ranges from 100m<2> / g to 180m<2> / g, diameters of mesoporous are uniform, ducts of the mesoporous are order and advanced, and the photocatalyst is applicable to the field of photocatalysis.

The invention relates to a preparation method and application of an electrochemical sensor for detecting a blood concentration level of an insulin sensitivity reduction early diagnosis biomarker, namely galectin-3 (Gal-3), causing type II diabetes, and belongs to the technical field of electrochemical detection. The preparation method is characterized by comprising the following steps: respectively synthesizing an N-GNRs-Fe-MOFs@AuPNs sensor substrate modified nano composite material and an AuPt-MB nano composite signal material, enabling a detection antibody capable of being in specific binding to the Gal-3 to be mixed with the AuPt-MB composite material so as to prepare a biological signal probe; conjugating a Gal-3 specific capture antibody on a substrate platform modified by the N-GNRs-Fe-MOFs@AuPNs composite material so as to conveniently and specifically capture a target Gal-3; finally, performing specific binding on the Gal-3 as well as the detection antibody and the capture antibody, thereby obtaining the electrochemical sensor for detecting the blood concentration level of the Gal-3. The sensor is successfully used for detecting the Gal-3 in serum. The electrochemical sensor disclosed by the invention has the advantages of being high in sensitivity, high in specificity, rapid in detection and convenient. An early diagnostic basis is provided for insulin resistance causing the type II diabetes.

The invention discloses a specific hypersensitive sandwich electrochemical immunosensor based on a novel reduced graphene oxide tetraethylenepentamine-thionine-gold nanoparticle (rGO-TEPA-Thi-Au) composite material and ruthenium-palladium-platinum trimetallic nanoparticles (RuPdPt TNPs). The specific hypersensitive sandwich electrochemical immunosensor is used for detecting a monocyte chemoattractant protein-1 (MCP-1) in human serum. Reduced graphene oxide tetraethylenepentamine (rGO-TEPA) contains a large amount of amino groups and significantly accelerates electron transfer. Thionine (Thi) molecules increase the adsorption capacity of negatively charged AuCl4<-> ions. Gold nanoparticles (AuNPs) in a nanocomposite can provide active sites for immobilization of biological materials. In addition, the RuPdPt TNPs have excellent catalytic properties for the reduction of H2O2, and Pt-NH2 can effectively capture antibodies. The specific hypersensitive sandwich electrochemical immunosensor has the advantages that the linear range is wide, sensitivity is high, specificity is high, detection is rapid, good reusability is achieved, and the specific hypersensitive sandwich electrochemical immunosensor can be used for measure the MCP-1 content in the human serum, and has great potential in clinical testing.

The invention relates to a preparation method and application of an electrochemical sensor for mycotoxin zearalenone detection, and belongs to the technical field of electrochemical detection. The preparation method is characterized by comprising the following steps: firstly, synthesizing to obtain a Cu at L-Glu nano-material, then immobilizing palladium-platinum bimetallic nanoparticles on the Cuat L-Glu nano-material, and mixing a signal probe with the composite material to prepare a biological signal probe; and immobilizing a zearalenone aptamer AP by using Au-PANI-Au so as to prepare theelectrochemical sensor for zearalenone detection. The sensor has the potential for zearalenone detection in food and feed. The method has the advantages of high sensitivity, high specificity and rapidness and convenience in detection. Experimental basis is provided for research and development of zearalenone pollution detection technology, and a new idea and a new technical platform are provided for monitoring zearalenone pollution in food and feed.

A preparation method of a self-supporting two-dimensional transition metal / metal oxide mixed-phase nanosheet relates to a preparation method of a two-dimensional nano material and solves the problems of complex technology, harsh reaction condition and poor electric conductibility of transition metal oxide in the conventional method for preparing the self-supporting two-dimensional transition metal / metal oxide mixed-phase nanosheet. The preparation method of the mixed-phase nanosheet comprises the following steps: firstly, inorganic transition metal salt, organic amine, alcohol and water are mixed to form a turbid liquid of an organic amine complex containing metal ions; secondly, the turbid liquid reacts under a high-temperature solvent thermal condition to generate a precursor of the metal / metal oxide mixed-phase nanosheet; finally, high-heat treatment is conducted under the protection of inert gas to control the crystallinity of the two-dimensional metal / metal oxide mixed-phase nanosheet. The preparation method provided by the invention has the advantages of simple technology and lower equipment requirement; the mixed-phase nanosheet prepared by the method has excellent electric conductibility.

The invention discloses a preparation method and application of three-dimensional multi-dimension porous crystal titanium carbide, relates to a preparation method and application of crystal titanium carbide, and aims to solve the problem that existing two-dimensional crystal titanium carbide is liable to stack, and especially has low mass specific capacitance when the mass is relatively large. Themethod comprises the following steps: I, preparing a two-dimensional layered titanium carbide nanosheet; II, calcining to obtain the three-dimensional multi-dimension porous crystal titanium carbide.The mass specific capacitance of the three-dimensional multi-dimension porous crystal titanium carbide prepared by the method is about 129F / g when the mass is 10mg. By adopting the preparation method, the three-dimensional multi-dimension porous crystal titanium carbide can be obtained.

The invention relates to a preparation method of a renewable electrochemical immunosensor capable of being used for detecting a biomarker for forecasting and diagnosing an acute coronary syndrome, i.e., a soluble CD40 ligand (sCD40L), and belongs to the technical field of electrochemical detection. The preparation method is characterized by comprising the following step: immobilizing an sCD40L antibody through a carboxyl functionalized multi-wall carbon nano tube-polyethyleneimine-gold nanoparticle nano compound (c-MWCNTs-PEI-AuNPs) serving as a substrate material to realize capturing of sCD40L and further quantitatively detecting the sCD40L. A c-MWCNTs-PEI-AuNps nano compound is easy to prepare, high in conductivity, relatively high in stability and relatively large in specific surface area, so that a large quantity of antibodies can be firmly immobilized; furthermore, by the use of specificity identification of the antibodies and antigens, the built electrochemical immunosensor is relatively high in specificity. The electrochemical immunosensor has the advantages of high sensitivity, high specificity, convenience, quickness and capability of being repetitively used for multiple times; a new method is supplied to detection of the sCD40L, and available information is supplied to clinical forecasting and diagnosis of the acute coronary syndrome.

The invention relates to a preparation method of an electrochemical DNA biosensor for detection of LPL gene SNP (rs1801177), and belongs to the technical field of electrochemical detection. The preparation method is characterized by comprising the steps: firstly, the surface of a nitrogen-doped graphene (N-G) sheet is loaded with a large number of palladium-platinum bimetal (PdPt) nanoparticles, then polyaniline is formed on the surface of the nitrogen-doped graphene (N-G) sheet by in-situ polymerization to obtain a nano composite material, next, a single-stranded DNA signal probe is mixed with the composite material, and a redox probe is prepared; secondly, a capture probe is immobilized on the surface of a sensor by a C60 / PAMAM / Au nanocomposite material, and the electrochemical DNA biosensor for quantitative detection of rs1801177 is prepared. The biosensor is successfully applied to detection of single-base mutation of a lipoprotein lipase gene. The biosensor has the advantages of high sensitivity, strong specificity, and convenient and fast detection, provides a new method for detection of rs1801177, and provides a theoretical basis and an experimental basis for clinical diagnosis and prevention of cardiovascular diseases.

The invention relates to a preparation method of an iron nitride / nitrogen doped and reduced graphite oxide complex, and aims to solve the problems that in the prior art, the preparation process is complicated, the cost is high, the yield is low, and the conductivity and electrochemical performance of complex are bad due to the large size of iron nitride. The preparation method comprise the following steps: (1) preparing a graphite oxide / inorganic iron salt mixed solution; (2) preparing an organic amine / alcohol solution; (3) mixing two solutions to obtain an iron ion containing turbid liquid of organic amine complex and graphite oxide; (4) preparing an iron-based cluster / reduced graphene oxide precursor; (5) burning the precursor to obtain iron nitride / nitrogen doped and reduced graphite oxide complex. The provided preparation method has the advantages that the size of iron nitride is uniform, and the diameter is less than 10 nm. The provided preparation method is mainly used to produce iron nitride / nitrogen doped and reduced graphite oxide complex.

The present invention provides a compact three-dimensional wavelength division multiplexing / demultiplexing device and an implementation method thereof. The compact three-dimensional wavelength division multiplexing / demultiplexing device comprises a microring resonator, a micro-strip metal coil, and two bar-type strap straight waveguides arranged at two sides of a nonreciprocal microring resonator,coupled with the microring resonator and configured to perform optical signal input / output; the two ends of the two bar-type strap straight waveguides are respectively provided with first, second, third and fourth optical signal output / input ports, and uniform waveguide Bragg reflection gratings are etched at the second port; the microring resonator comprises a microring bending waveguide and a magnetic rotary medium arranged at the inner wall of the microring bending waveguide, and an external static magnetic field required by work of the magnetic rotary medium around the current passing through in the metal coil is generated. The current direction in the metal micro-strip metal coil is changed to achieve the switching of the system between the three-dimensional wavelength division multiplexing device and the demultiplexing device. The compact three-dimensional wavelength division multiplexing / demultiplexing device and the implementation method thereof are simple in structure, high in isolation, low in power loss, little crosstalk, compact and convenient to integrate, can achieve large-scale optical waveguide integration, can perform batch production to reduce the cost and is easy to promote and apply.

The invention discloses a preparation method and a using method of a graded hole TiO2 ceramic photocatalyst, and relates to a preparation method and a using method of a photocatalyst. Problems to be solved in the invention are that the TiO2 ceramic photocatalyst capable of removing organic pollutants in wastewater cannot be prepared within 4 hours-6 hours in the existing method, and time for degrading organic pollutants in the wastewater by using the existing TiO2 ceramic photocatalyst is long. The preparation method comprises the following steps of: roasting powder materials, deionized water, a foaming agent, a dispersing agent and a binding agent after mixing, ball-milling, injection-molding and drying to obtain the graded hole TiO2 ceramic photocatalyst. The using method comprises the following step of: adding the graded hole TiO2 ceramic photocatalyst in the wastewater to irradiate under ultraviolet light. The prepared graded hole TiO2 ceramic photocatalyst has characteristic of being short in time of degrading pollutants in the water. The graded hole TiO2 ceramic photocatalyst is used as the photocatalyst for removing the organic pollutants in the wastewater.

The invention relates to a preparation method for an aptamer biosensor for T-2 toxin detection in food or feed and application, which belong to the technical field of electrochemical detection. The method is characterized by comprising steps: a gold nanorod (Au NRs) material is firstly synthesized and obtained; platinum is then reduced on the gold nanorods to form gold platinum nanorods (Au@PtNRs), through combination with reducing graphene oxide-tetraethylenepentamine (rGO-TEPA), increasing of an immobilization amount is realized, and the signal amplification ability is improved; then, through combination with single-stranded DNA signal probe, a biosignal probe is thus prepared; and finally, through fixing of molybdenum disulfide-polyaniline-chitin-gold nanoparticle composite material anda DNA capture probe, an aptamer biosensor for T-2 toxin detection is thus prepared. The sensor is successfully applied to trace detection of T-2 toxin in food or feed. The method has the advantages that the limitation of a T-2 toxin small molecule substance is broken through, and through introducing a nucleic acid aptamer, T-2 toxin high-sensitivity and high-specificity trace detection can be realized, and a simple and quick new strategy is provided for mycotoxin detection.

The invention belongs to the technical field of fuel cells, and particularly relates to a platinum-cobalt alloy carbon catalyst for a proton exchange membrane fuel cell and a preparation method of the platinum-cobalt alloy carbon catalyst. The preparation method of the platinum-cobalt alloy carbon catalyst comprises a pretreatment process and a reaction process. The obtained crude platinum-cobalt alloy catalyst is subjected to post-treatment, a post-treatment solution A is added into the crude platinum-cobalt alloy catalyst during post-treatment, after treatment is conducted for 0.5-200 h at the temperature of 0-80 DEG C, part of a solvent is removed, then a post-treatment solution B is added, after continuous treatment is conducted for 0.5-200 h at the temperature of 0-80 DEG C, washing is conducted, and drying at 20-85 DEG C is conducted to obtain the platinum-cobalt alloy carbon catalyst. According to the prepared crude platinum-cobalt alloy catalyst, unalloyed elements and impurities on the surface of the catalyst can be removed through post-treatment, raw materials used in the preparation process are environmentally friendly, the preparation technology is high in operability, and commercialization is easy to achieve; and the prepared platinum-cobalt alloy catalyst is excellent in catalytic activity, good in oxygen reduction performance and high in power density when applied to a single battery.

The invention discloses a defect type sulfur-indium-zinc microsphere visible-light-induced photocatalyst, and a preparation method and application thereof. The preparation method comprises the following steps: heating ZnIn2S4 microspheres to 90-120 DEG C in a hydrogen atmosphere, and carrying out heat treatment to obtain the defect type sulfur-indium-zinc microsphere visible-light-induced photocatalyst. The defect type sulfur-indium-zinc microsphere visible-light-induced photocatalyst can broaden the light absorption range of the catalyst, improve the separation efficiency of photo-induced electrons and hole pairs and further improve the photocatalytic efficiency.

The invention discloses an aerated concrete debris-based masonry mortar for thermal-insulation masonry and a preparation method thereof. According to the invention, aerated concrete block broken waste which is used as a base material undergoes crushing and screening to prepare a mortar aggregate-lightweight sand dry powder; and cement, pure water and a micro-foaming agent are added in proportion to prepare a hydraulic gelled composition. By the above technical scheme, the defect that various mortars for present self-insulation wall masonry has large heat conductivity coefficient and poor thermal insulation performance, it is easy to form cold / heat bridge effect in masonry walls and the overall thermal insulation performance of self-insulation walls is reduced is overcome. The masonry mortar provided by the invention is suitable for thermal insulation masonry or wall masonry, is more suitable for self-insulation masonry or wall masonry, and also can be used for troweling, plastering and seaming.

The invention discloses a porous graphene-based magnetic carbon block and a preparation method thereof; the preparation method comprises the main steps of (1) dispersing graphite oxide evenly in a solvent, adding a surfactant, and mixing well to obtain graphite oxide and surfactant mixed solution; (2) adding a cobalt salt and a polymer into the mixed solution of step (1), and mixing well to obtain a precursor solution; subjecting the precursor solution of step (2) to hydrothermal reaction, washing the reaction product, lyophilizing, and thermally treating to obtain the porous graphene-based magnetic carbon block. The porous graphene-based magnetic carbon block provided herein is a lightweight porous magnetic carbon block material, capable of adsorbing organic matters, organic dyes and heavy metal ions and widely applicable to wastewater treatment; and the preparation method has the advantages of good process simplicity, low cost and high yield and is easy to commercialize.

The invention provides an erbium-doped fluoride fiber laser device and a laser generation method. The laser device comprises at least one pump laser device, a beam combiner, a first fiber bragg grating, a second fiber bragg grating, a double-cladding erbium-doped fluoride fiber, a third fiber bragg grating and an AlF3 end cap. The laser device is advantaged in that 1.6 mu m laser is constrained bya second optical resonant cavity formed by the first fiber bragg grating and the third fiber bragg grating, finally, absorbed and pumped to an energy level 4I9 / 2 by an excited state energy level 4I13 / 2 of the erbium ions, through multi-phonon relaxation, the energy level is returned to 4I11 / 2, particles with the energy level of 4I11 / 2 can be transited to the energy level of 4I13 / 2 through the pump light to generate 2.8 mu m laser, the laser of 1.6 mu m is not only recycled, but also particles on the energy level 4I13 / 2 are recycled, the oscillation self-termination effect of the laser of 2.8mu m is reduced, and the energy utilization rate of the laser device is greatly improved.

The invention discloses a direct-view type method and device for generating any column vector polarized light based on a vortex half-wave plate, a light beam emitted by a laser device becomes horizontal line polarized light after passing through a horizontal polarizer, the light beam is amplified after passing through a beam expander, the polarization direction of the linear polarized light is adjusted through a rotatable first [lambda] / 2 wave plate, a cylindrical vector polarized light beam is generated after passing through the vortex half-wave plate, multiple types of cylindrical vector light beams can be achieved by rotating the first [lambda] / 2 wave plate, and at the moment, the types of the cylindrical vector light beams can be increased by the light beam through the rotatable second [lambda] / 2 wave plate. A first [lambda] / 4 wave plate and a combination of a second [lambda] / 4 wave plate and a second vortex wave plate are arranged in the device, vortex light beams and cylindrical vector vortex light beams can be generated respectively, in addition, through the combination of vortex half-wave plates, a novel vortex half-wave plate can be generated, and then more cylindrical vector light beams are generated. Any column vector light beam can be generated by rotating and placing the wave plate, the structure is simple, light reflection and deflection do not exist, and energy utilization and conversion rate are high.

The invention discloses a novel sandwich-type biosensor based on 4-mercapto-phenylboronic acid (4-MPBA). Alpha 2,3 saliva acidification glycan is one of tumor markers for early diagnosis of cancer. Bythe aid of boron atoms matched with the 4-MPBA and Neu5Ac amide groups, a new molecular recognition system is built and used for detecting the alpha 2,3 saliva acidification glycan for the first time. An amination fullerene palladium-platinum alloy is used for signal amplification, and sophora japonica agglutinin is covalently immobilized onto Au-polymethylene blue serving as a signal probe and used for specifically recognizing the alpha 2,3 saliva acidification glycan. Under optimal experimental conditions, the biosensor displays the wide linear range of 10fg mL<-1>-100ng mL<-1> and the detection limit of 3fg mL<-1> (S / N=3). Besides, the method shows good repeatability and stability and can be used for clinical research.

The invention discloses a technology for enabling passengers to get on and get off a train without stopping in a station. According to the technology, a main train 1, a get-off carriage 2, a get-on carriage 3, a winch 4, a steel cable 5, a lantern ring 6, a bracket 7, a traction column 8, a connecting rod 9, a main lane 10 and an auxiliary lane 11 are mainly utilized; the get-off carriage at the tail of the main trail is disconnected with the main train before the train gets into the station, and enters a stop platform at the auxiliary lane by virtue of inertia so as to ensure that passengers can get off; passengers, having tickets checked and getting in the station, sit in the get-on carriage stopped at the auxiliary lane in advance, and the lantern ring extending out of the tail of the main trail sleeves a connecting rod extending out of the get-on carriage and slides onto the traction column when the main train enters the station from the main lane and puts over the get-on carriage; the steel cable connected with the lantern ring is released at a variable speed from the winch fixed to the tail of the main train, the get-on carriage is immediately pulled into the main lane by the steel cable, moves forward at a gradual increasing speed until the speed is the same as that of the main train, finally approaches the main train and is connected with the main train, and passengers are dispersed to each carriage of the main train, so that a task of enabling the passengers to get on and get off the train without stopping in the station is realized.

The invention relates to a preparation method of a renewable electrochemical immunosensor which can be used for predicting and diagnosing a biomarker of acute coronary syndrome, namely a soluble CD40ligand (sCD40L), which belongs to the technical field of electrochemical detection. The method provided by the invention comprises the steps that a carboxyl-functionalized multi-walled carbon nanotube-polyethyleneimine-gold nanoparticle nanocomposite (c-MWCNTs-PEI-AuNPs) is used as a substrate material for immobilizing an sCD40L antibody, so as to capture the sCD40L; and then the sCD40L is quantitatively detected. Since the c-MWCNTs-PEI-AuNPs nanocomposite has the advantages of simple preparation, good electrical conductivity, good stability and large specific surface area, the nanocomposite can firmly immobilize a large number of antibodies and utilizes specific recognition of antibodies and antigens. The constructed electrochemical immunosensor has strong specificity. The method providedby the invention has the advantages of high sensitivity and specificity, convenience, quickness and regenerability, provides a new method for detecting the sCD40L, and provides useful information forclinical prediction and diagnosis of acute coronary syndrome.