505results about How to "Meet environmental requirements" patented technology

The invention relates to a multi-channel portable colloidal gold test paper strip quick test device, which mainly comprises a detector, wherein the detector comprises a detecting part, an electrical part and a software detecting part; the detecting part comprises a plurality of mutually independent detecting channels; the electrical part comprises an ARM data processor, a keyboard and an LCD; image data detected by the detecting part are processed and displayed by the electrical part; and the software detecting part controls detecting steps. The device has a multi-channel detecting structure, and four channels can carry out the same detection item as well as different detection items. The device has the advantages of high detection speed, large amount of samples and great practical value.

A LBD packing structure includes a base, noumenon and several LBD. The noumenon is installed on the base with a circle groove on one side. LBD are fixed in the groove to supply a lateral light for the packing structure. The invention also provides an optical pipe which includes a column and several prisms. The column is of an outer side and an inner reflecting side. The prisms are installed in between the outer and inner sides. By combining the LBD package and the optical pipe, the package is capable of generating diffusion light and be used in apheliotropic module and LCD displayer.

The invention discloses a nitrogen and sulfur co-doped hierarchical porous carbon composite material, and a preparation method and an application thereof, and belongs to the technical field of supercapacitor electrode materials. A natural polymer material which is abundant in the nature, low in price and easy to obtain is used as a carbon source, graphene oxide is added to improve the conductivity, an activator and a doping agent are added in advance, and a general two-step technology (high-temperature carbonization and chemical activation) for preparing a carbon material is simplified into one-step high-temperature annealing, so that the carbon material with a high specific surface area and a hierarchical porous three-dimensional structure is obtained; and nitrogen and sulfur doping improves the electrochemical performances of the material. The composite carbon material has the advantages of high mass specific capacitance, excellent high-current rate capability, ultra-long cycle life,high mass energy density and high power density when used as a high-performance electrode material for a supercapacitor. The preparation method has the advantages of simplicity, feasibility, low requirements on reaction deices, environmental friendliness, and suitableness for industrial production.

The invention relates to a mobile video quality assessment method based on hierarchy analysis and multiple linear regressions. The method comprises the following steps: firstly, determining each layer of end-to-end performance indexes of user QoE (Quality of Experience) influencing mobile video services; dividing various end-to-end performance indexes of the QoE into a target layer, a criterion layer and an index layer by utilizing a hierarchy analysis method according to the attributes and the types of the performance indexes; respectively constructing hierarchical influence models in manners that the index layer is aligned to the criterion layer which is aligned to the target layer from bottom to top by utilizing the multiple linear regression analysis; constantly adjusting regression coefficients for influencing the models and various performance indexes of the models; and finally, establishing the influence model in the manner that the index layer is aligned to the target layer, i.e., establishing a total regression model influencing the quality of a mobile video according to various end-to-end performance indexes of QoE so as to assess the quality of the mobile video by utilizing the hierarchical total assessment model. According to the method, the subjective and objective performance indexes of the mobile video are combined with the QoE of the user, so that the method provided by the invention is a comprehensive and effective user experience quality assessment method.

The invention discloses a double-motor coupling driving electric tractor and a control method thereof. The tractor comprises a storage battery pack 1, a battery management system 2, a whole vehicle controller 3, a coordinating controller 4, a main motor controller 5, a main motor 6, an auxiliary motor controller 7, an auxiliary motor 8, a power coupling gearbox 9, a differential mechanism 10, a power output shaft 11, driving wheels 12, a steering wheel 13 and a frame 14, wherein the main motor 6 and the auxiliary motor 8 are arranged at the input end of the power coupling gearbox 9, the outputend of the power coupling gearbox 9 has two paths of power output, and one path of power is output to the differential mechanism 10 and then transmitted to the two driving wheels 12 to drive the electric tractor to run; the other path of power is output to the power output shaft 11 to drive the electric tractor PTO to work. The electric tractor can achieve zero-pollution discharge and meet the power requirements of different operation loads under different working conditions, the working efficiency of a driving system is improved, and the cruising ability is enhanced.

The invention discloses a digital static calibration circuit of a digital-to-analog converter (DAC), which can be used for calibrating a most significant bit (MSB) current source and a least significant bit (LSB) total current source in a current mode DAC. The calibration circuit can operate in a calibration mode and an output mode respectively under the control of external signals. The calibration circuit comprises an address generator, a switch array, a sequential approximation logical module, a calibration DAC array, a memory, a comparator and an integrated current gain module, wherein theintegrated current gain module comprises a current source array for regulating integral current, a paired choice, a full-scale adjusting resistor and an amplifier. The calibration circuit is used forovercoming the difficulty that the accuracy of the current mode DAC is limited, realizing the high static linearity of the DAC, and improving the accuracy of the current mode DAC.

The present invention provides one kind of nanometer MoO3 stick and its preparation process. The laminated nanometer MoO3 stick in orthorhombic system has length 1-10 microns, 3-9 laminated MoO3 layers, thickness 50-200 nm and width 60-120 nm. The preparation process includes dissolving molybdenum oxide or molybdate in hydrogen peroxide solution via intense stirring for 30-50 hr to form sol, transferring the sol into stainless steel reaction tank with PTFE lining, hydrothermal treatment at 150-180 deg.c for 4-6 days, naturally cooling to room temperature to obtain hydrothermal product, anhydrous ethyl alcohol washing and water washing, and drying. The preparation process is simple, high in reproducibility, controllable, and environment friendly. The prepared nanometer MoO3 stick has high surface activity and may be filmed via brushing or spraying and prepared into electrochemical and optical devices directly or after being mixed with other superfine powder.

The invention relates to a method for preparing active organosilicon end capping polypropylene oxide cationoid emulsion, which comprises the following steps: using hydrogen-containing polysiloxane, unsaturated polyether and epoxy-containing unsaturated compounds as main raw materials to prepare epoxy-containing polyether-polysiloxane by adopting two steps of silicon-hydrogen addition reaction and then prepare a series of quaternary ammonium salt type polyether-polysiloxane nonionic cationic surfactants with different molecular weights and different hydrophilic and oleophilic values through quaterisation, and then using the obtained surfactant to emulsify active organosilicon end capping polypropylene oxide (SPPO), so as to obtain the active organosilicon end capping polypropylene oxide cationoid emulsion containing no organic solvent and having good storage stability and freeze-thaw stability through phase inversion emulsifying process. The method has the advantages of little equipment investment, simple process, easy operation and low production cost; and the obtained active organosilicon end capping polypropylene oxide cationoid emulsion can be used as a basic material for producing environment-friendly water-based polymer products such as paint, adhesive and sealant.

The invention discloses a synchronous control communication device for a brake system of an electric locomotive, which comprises a main control unit, a memory unit, a high-speed memory unit, a programmable logic unit CPLD, a CAN bus interface unit, a MVB interface unit, a synchronous RS422 interface unit and a USART interface unit, wherein the memory unit and the high-speed memory unit are connected with the main control unit respectively; the main control unit is connected with an E-P brake controller and a control system display screen through the CAN bus interface unit; the main control unit is connected with a central control unit of the electric locomotive through the MVB interface unit; the main control unit is connected with a wireless synchronizer through the synchronous RS422 interface unit; and the main control unit is connected with a braking control unit of the electric locomotive through the USART interface unit. The synchronous control communication device for the brake system of the electric locomotive has the advantages of simple structure, low cost, various bus interfaces, wide application scope, high expandability, high control precision, high anti-interference capacity and the like.

The invention discloses an ecological breeding method of small-ear pigs. The method comprises the following steps: (1) selecting a land and distributing for a cultivating farm; (2) disinfecting a pig farm; (3) performing raising management of piglets; (4) performing raising management of middle pigs; (5) performing raising management of middle and big pigs; (6) performing raising management of growing and fattening pigs; and (7) preventing diseases. Pigs bred by adopting the ecological breeding method of small-ear pigs is strong in self resistance, low in morbidity, delicious in meat, rich in nutrients, and fast to grow; and the bred small ears meet the requirement of green food.

The invention relates to the technical field of biological fertilizers, in particular to a biological organic fertilizer and a method for preparing the same. The biological organic fertilizer is mainly made of raw materials including, by weight, 50-80 parts of animal feces, 40-60 parts of crop straw, 10-25 parts of wheat bran, 5-20 parts of peanut bran, 10-30 parts of rice bran, 10-25 parts of biogas residues, 15-30 parts of plant ash, 2-10 parts of brown sugar, 1-5 parts of microbial nutrient solution and 1-10 parts of starter culture. The biological organic fertilizer and the method have the advantages that soil properties of soil can be improved, the resource utilization rates can be increased, and the biological organic fertilizer and the method are environmentally friendly and are free of pollution; abundant balanced nutrition can be provided for crops, accordingly, the yield of the crops can be effectively increased, and the quality of the crops can be effectively improved.

The invention relates to the field of preparation of polypropylene composite materials, in particular to an environment-friendly and flame-retardant polypropylene composite material. The environment-friendly and flame-retardant polypropylene composite material is prepared from 100 parts of polypropylene, 0.1-2 parts of modified graphene, 0.5-3 parts of modified carbon nano tubes, 10-20 parts of an inorganic flame retardant, 5-10 parts of a compatilizer, 3-10 parts of a toughening agent, 0.1-0.3 parts of an antioxidant and 0.1-0.3 parts of a heat stabilizer. Graphene, the carbon nano tubes and the inorganic flame retardant are added to polypropylene resin, and a brand-new flame retardant system is formed; dispersing performance of graphene in a polymer system is improved through modification of graphene; migration of combustible matter in a polymer matrix can be effectively inhibited; a compact protective carbon layer is formed on the surface of the polymer matrix by graphene in the burning process of the composite material, and finally, the flame-retardant effect is achieved.

The invention provides a shipping high-voltage shore power system. The output power adopts AC6.6KV / 60Hz or AC6KV / 50Hz; the shipping high-voltage shore power system comprises a shore-based part and a shipborne part, wherein the shore-based part comprises a high-voltage wire-inlet switch cabinet, a high-voltage frequency converter, an isolating transformer, a wire-outlet switch cabinet, a measuring cabinet, a high-voltage shore power junction box and a PLC monitoring cabinet; the shipborne part comprises a high-voltage cable reel, a shipborne high-voltage shore power connection power distribution cabinet, a shipborne high-voltage shore power measuring protection cabinet, a shipborne transformer and a shipborne shore power access control screen. The shipping high-voltage shore power system adopts a high-voltage boarding manner, and the output power adopts AC6.6KV / 60Hz or AC6KV / 50Hz; therefore, the shipping high-voltage shore power system is suitable for shore-based power supply for ports, and can be applied in a convenient, rapid and effective manner; power supply for ships in berthing periods is realized; and the shipping high-voltage shore power system is energy-saving, environment-friendly, and regarded as a part of green ports.

The invention discloses a solvent recovery method of Lyocell fibers, comprising the following steps: processing collected Lyocell fibers into a washing liquor, introducing the washing liquor to a decolouring groove, using active carbon powder to decolor through suspension, then removing the active carbon and impurities from the decolored washing liquor by a two-stage filtration containing prefiltration and ultrafiltration, removing the water from the washing liquor by one of the following two methods: mechanical vapor recompression condensation method and triple effect evaporation vapor condensation method, so as to obtain a recovered solution with the solvent concentration which coincides with fiber processing. Because the recovery process is simple, the devices used in conjunction with the process are not complicate, easy to access, and suitable for using in the recovery of a large amount of low concentration washing liquor, so that the invention has competitive recovery cost, recovery efficiency and quality of the recovered solution, and has practicability and environmental nature.

The invention discloses a botanical seedling culturing machine. A control system and a water pump, an air compressor, an air conditioner and a pre-heater which are electrically connected with the control system are arranged in a primary unit segment and an external ventilator and an internal gas circulator which are electrically connected with the control system arranged in the primary unit segment are arranged in an auxiliary unit segment, at least one group of culturing chests of drawers (5) and sliding rails (18) for drawer; each group of culturing chests of drawers (5) are provided with operation shelves (13), working inter-layers (14) and movable meshes (16), and movable working discs (15); ventilation and fertilizer feed holes are arranged at the bottom of the movable working disc (15), a light strip module (28), a spraying pipeline and a nozzle (29), a high-pressure air pipe (30), and the reflux tank (32) of an irrigation tank (31) are arranged in the rippled grooves downwards of a plurality of notches on the working inter-layer (14). The invention is a plastic potted tray botanical seedling culturing machine without foam, polystyrene, and polypropylene capable of high-quality industrialized, intensified and entire-year seedling culturing seedling production of scale.

The invention discloses a hydrotalcite-like compound / eggshell membrane composite film and a preparation method thereof and belongs to the technical field of preparation of composite-function film materials, and the composite film is researched as a chromyl adsorbent. The invention has the technical scheme that the eggshell membrane is used as a substrate and a template, and the hydrotalcite-like compound is fixed to the surface of the eggshell membrane by using an in-situ growth method, thereby obtaining an inorganic-biological composite film with a reticular structure. The invention uses the biological substrate eggshell membrane as the substrate and template for the first time, adopts an in-situ crystallization method to prepare the hydrotalcite-like compound / eggshell membrane inorganic-biological composite film, and makes a preliminary research into the applications of hydrotalcite-like materials in the field of biology. The composite film has favorable adsorbability as a chromyl adsorbent, and especially can carry out adsorption under the acidic conditions of a lower pH value, thereby saving the cost and meeting the requirements of the environment.

The invention relates to a preparation method of porous carbon. The preparation method of porous carbon comprises the following steps: well mixing carbonaceous organic material serving as raw material with solid ZnCl2 powder in dry air; then, carrying out fluidized calcination reaction in an inert atmosphere to obtain a porous carbon-ZnCl2 composition; treating the obtained porous carbon-ZnCl2 composition in a hydrochloric acid solution and washing ZnCl2 out of porous carbon; and finally drying to obtain the finished porous carbon product. When the prepared porous carbon is used as an electrode material of an electrochemical capacitor, due to large specific area and a hierarchical pore structure rich in microspores and mesopores, the prepared porous carbon shows excellent electrochemical performance. According to the preparation method, at 400-700 DEG C, Zn<2+> and Cl<-> in fused salt are used for inducing the carbonization and activation pore forming process of an organic matter precursor; the advantages that an activating agent can be recycled, the energy consumption is low, production efficiency is high are achieved; therefore, the preparation method is very suitable for large-scale production.

The invention discloses a fluorine-containing polymer and a preparation method thereof. One or more fluorinated monomers is / are subjected to liquid polymerization by using polyfluothane oxy ether acid as an emulsifier to obtain the fluorine-containing polymer free of perfluoro-octanoic acid or perfluoro-octylsulfonic acid, wherein the polyfluothane oxy ether acid is a halogen-terminated or hydrogen-terminated polyfluothane oxy ether acid emulsifier. The technical scheme mainly relates to the following three improvements: (1) the polyfluothane oxy ether acid or salt thereof selected instead of PFOA / PFOS as the fluorine-containing emulsifier can be effectively used in aqueous emulsion polymerization reaction of fluorinated monomers; (2) the prepared fluorine-containing polymer is free of perfluoro-octanoic acid or perfluoro-octylsulfonic acid, and thus, satisfies the environmental requirement; and (3) the fluorine-containing polymer conforms to the cost accounting, can greatly enhance the single-kettle yield of the equipment on the premise of not increasing the production equipment and personnel, and meanwhile, can enhance the polymerization time, polymerization yield and other production indexes.

The invention relates to a method for preparing a selenide ferrous iron nanometer flower. The material can be used as an active material of an anode of a lithium ion battery. The method for preparing the selenide ferrous iron nanometer flower comprises the following steps that: according to the ratio of 0.1 mol:0.1 mol:100 mL, selenium powder, sodium sulfite and deionized water are picked up, heated and stirred to obtain a solution of Na2SeSO3; 2) according to the ratio of 10g:100 mL, polyvinyl alcohol and distilled water are picked up, heated and stirred to obtain a water solution of polyvinyl alcohol; 3) according to the ratio of 2.5 mmol:5 mL:20 to 30 mL : 20 to 30 mL, F3C2O4, citric acid with the concentration of 1 M, the solution of Na2SeSO3 and the water solution of polyvinyl alcohol are picked up, mixed and stirred, and by adjusting the pH value of the system to be 8-10, an even rheological phase matter is obtained; 4) the obtained matter is kept at a temperature of between 160 and 180 for 10 to 24 hours and then naturally cooled to obtain a hydrothermal product; 5) the hydrothermal product is subjected to centrifugal separation; and 6) the hydrothermal product is dried to obtain the red brown selenide ferrous iron nanometer flower. The method has the characteristics of simple process and low synthetic temperature.

The invention belongs to the technical field of vehicular electronics, and particularly relates to a vehicle-mounted electronic system, a vehicle-mounted equipment power source management method and a vehicle. By adopting the vehicle-mounted electronic system comprising vehicle-mounted electronic equipment, an ignition detection module and a switch module and combining the power source management method of the vehicle-mounted electronic equipment, after confirming that the vehicle is ignited, the ignition detection module outputs a starting signal to the switch module to enable the switch module to enable connection between an output end of a vehicle-mounted storage battery and the vehicle-mounted electronic equipment to be on, and vehicle-mounted electronic equipment is enabled to enter a started state; the vehicle-mounted electronic equipment outputs a start maintaining signal or a stopping signal to enable the same to be started or stopped. By the vehicle-mounted electronic system, ignition detection can be realized by adopting a pure hardware mode, and the vehicle-mounted electronic equipment can be completely switched off, so that the problem of continuous power source consumption when software is adopted for detection is solved, and requirements on environmental protection are met; the system only needs to be connected with the vehicle-mounted storage battery, thereby having the advantages of simplicity and convenience in wiring.

The invention specifically relates to a borehole wall stabilizing agent capable of plugging and reinforcing borehole wall rocks, which belongs to the field of oilfield chemistry. The borehole wall stabilizing agent comprises, by weight, 15 to 30% of isophorone diisocyanate, 25 to 60% of polypropylene glycol, 5 to 20% of dimethylolpropionic acid and 10 to 30% of dopamine hydrochloride. The borehole wall stabilizing agent provided by the invention is capable of plugging and cementing micro-cracks near a borehole wall, reducing permeability of shale and bonding with the shale on the borehole wall to form a compound which can harden the borehole wall; molecules of the borehole wall stabilizing agent have a small size, are easy to diffuse and can penetrate into the shale, so bonding among the shale is benefited and bonding capability is enhanced; the borehole wall stabilizing agent is convenient to use, has excellent operation performance, can be cured through heating or at room temperature and meets environmental requirements during outdoor drilling operation; and due to no side reaction during curing, a bonding layer hardly has defects.

The invention discloses a preparation method of polyurethane resin for gravure composite ink, wherein the polyurethane resin is alcohol ester-soluble polyurethane resin not containing free cyanate ester radicals. Large amounts of allophanate radicals are introduced into the resin so that the ink prepared from the resin has excellent adhesion fastness to substrates such as PET (Polyethylene Glycol Terephthalate), NY (Nylon) and PP (Polypropylene) and the like. The preparation method is characterized in that diisocyanate is reacted with high-molecular polyol to generate NCO-terminated prepolymers, and then the prepolymers are added into a solvent containing an amine chain extender to achieve the polyurethane resin for the ink. The soft and hard segment of the resin has the advantages of wide adjustable range, large cohesive energy, good anti-aftertack property and good heat resistance; and the prepared ink has high binding strength to various printing substrates and has high composite strength. The preparation method provided by the invention has obvious characteristics of stable reaction in the synthesis process of the resin, easiness in control of the preparation process, narrow distribution of the molecular weight and good dissolubility of the resin.

The invention provides a method for synthesizing a lithium ion battery negative electrode material according to a mechanochemical method. The method comprises the following steps of proportioning raw materials in a certain mass ratio, wherein the raw materials include graphite oxide and relatively cheap micron-sized metal powder; carrying out wet ball milling to obtain slurry; naturally drying the slurry; and roasting at medium and low temperature for a short time, thus obtaining the negative electrode material. The method is simple in process, meets the environment requirement, and can be applied to industrial production. According to the prepared negative electrode material, nano-sized particles, high metallic oxide load and good properties can be achieved, and the prepared material is suitable for being used as the battery negative electrode material.

The invention belongs to the field of sodium ion battery materials, and particularly relates preparation of a high-capacity molybdenum selenide-chlorella derived carbon less-layer compound battery cathode material. The preparation comprises the steps of: firstly adding chlorella and a molybdenum source in distilled water; carrying out stirring at a room temperature for a certain time and then carrying out centrifugal drying; and further carrying out calcination and selenylation to obtain a less-layer molybdenum selenide-chlorella derived carbon compound. Results show that the sodium ion battery cathode material has excellent electrochemical property. The molybdenum selenide in the material is a less-layer structure (1-4 layers) and the distance between adjacent layers is about 0.66 nm, sothat the volume expansion in the charging / discharging process can be effectively buffered; and the chlorella derived carbon has in-situ N and P heteroatim doping, so that the less-layer molybdenum selenide structure can be effectively fixed and then the sodium storage performance is improved. The preparation is simple in process, strong in operability, wide in raw material source, low in cost andsuitable for large-scale production, and accords with environment requirements.

The invention discloses a zero-halogen and flame-retardation epoxy resin composition, an adhesive tape used for a flexible printed circuit board, and a preparation method of the adhesive tape. The zero-halogen and flame-retardation epoxy resin composition comprises 100 parts by weight of a zero-halogen epoxy resin, 30-100 parts by weight of a thermoplastic resin and / or synthetic rubber, 20-100 parts by weight of a composite curing agent, 0.01-1.0 part by weight of a curing promoter, 5-50 parts by weight of a phosphorus-containing flame retardant and 5-80 parts by weight of an inorganic filler. The adhesive tape used for the flexible printed circuit board comprises an insulation substrate layer, a primary coat and an adhesive layer. The preparation method of the adhesive tape used for the printed circuit board is characterized in that the primary coat composed of a polyurethane system resin compound is obtained on at least one dominant surface of the insulation substrate layer, and the primary coat substantially enhances the adhesion between the insulation substrate layer and the adhesive layer. The zero-halogen and flame-retardation epoxy resin composition contains no halogens, and satisfies an environment requirement; and the adhesive tape used for the flexible printed circuit board has a flame resistance reaching an UL94V-0 grade, and has the advantages of excellent peeling strength, excellent solder resistance, excellent dimension stability and excellent processability.

The invention belongs to the technical field of nano-material synthesis, relates to a method for preparing microspheres having uniform morphology by a solvothermal method, and especially relates to a method for preparing multi-tunnel cobaltosic oxide flower-like microspheres by a solvothermal method. The method comprises the following steps of uniformly mixing cobalt nitrate, copper nitrate, ethylene glycol and ammonia water, transferring the mixture to a reactor with a Teflon lining, carrying out a high-temperature solvothermal reaction process, carrying out centrifugal separation, washing and vacuum drying of solvothermal reaction products, and carrying out calcination in a tubular furnace. The method utilizes ethylene glycol as a solvent and utilizes a solvothermal method to prepare a cobaltosic oxide material having a high yield and uniform morphology. The multi-tunnel cobaltosic oxide flower-like microspheres prepared by the method have good chemical stability and can be used for preparing an electrode material and a hydrogen production material of a storage battery. The method has simple processes and good reappearance and utilizes a cobalt inorganic compound as a cobalt source, wherein the cobalt inorganic compound has a low cost, can be acquired easily and satisfies environmental requirements. The method avoids pre-treatment processes such as aging, allows a low synthesis temperature, reduces energy consumption and a reaction cost, and is convenient for volume production.

The invention discloses a 160AH lithium iron phosphate square battery and its manufacturing process. The process includes the following steps: (1) batching, (2) coating, (3) baking, (4) rolling, (5) battery electrodes sheet production, (6) lamination operation, (7) battery assembly, (8) heat sealing, (9) liquid injection, (10) chemical formation, (11) volume separation. Among them, in (1) the positive and negative electrode slurries are formulated with water-based glue, which will not produce any pollution and is a completely environmentally friendly formula. The prepared positive and negative electrode slurries have no solvent release, meet environmental requirements, have low cost and are safe to use. Compared with oil-based systems, the pole pieces of water-based systems are softer and can withstand multiple windings.

The invention relates to a preparation method of a silicon nitride ceramics ring for a polysilicon reduction furnace, comprising the following steps: weighing various raw materials, and stirring in media to obtain evenly mixed slurry; after the slurry is dried, prilling to prepare base stock; pressing and shaping to prepare a green body; processing by a lathe or a grinder into preset shape and size; sintering the processed green body into an atmosphere pressure sintering furnace; and carrying out finish machining to a sintered finished product to obtain the ceramics ring finished product. Thepreparation method has the beneficial effect that silicon nitride ceramics ring has good insulativity, high toughness, and good thermostability and antiknock characteristic, the service life can be prolonged, and added agglomerant is favourable for densification. The invention can satisfy environment use requirement of a polysilicon reduction furnace, has long service life and improves work efficiency.

The invention discloses a long bone fracture repositioning device, which comprises a proximal end support frame, a distal end support frame, quick drawing extension rods, steel needle fixing clamps and steel needles, wherein the quick drawing extension rods are connected between the proximal end support frame and the distal end support frame, the steel needle fixing clamps are connected to the proximal end support frame and the distal end support frame, the steel needles are clamped by the steel needle fixing clamps, the proximal end support frame and the distal end support frame are same in structure and respectively comprise a transverse chute type repositioning slide plate and two fixed gliding hole plates which are connected to the chute type repositioning slide plate, one surface of each chute type repositioning slide plate is provided with a transverse guide sliding chute, a transverse guide long hole is formed between the bottom of the guide sliding chute and the other surface of the chute type repositioning slide plate, the fixed gliding hole plates are provided with holes for connecting the steel needle fixing clamps, the fixed gliding hole plates are further provided with positioning bulges which are matched with the guide sliding chutes and can slide along the guide sliding chutes. The long bone fracture repositioning device disclosed by the invention is simple in structure, the minimally invasive idea is enhanced, the excellent rate of repositioning is improved, and requirements of fracture repositioning and various malformation correcting can be met to the maximum extent.

The invention belongs to a non-point source pollution control technique, and particularly relates to a landscape park type surface runoff treatment system. The landscape park type surface runoff treatment system mainly comprises an ecological landscape pond, a runoff treatment landscape land, ecological diversion canals and auxiliary park facilities. The landscape park type surface runoff treatment system is located at the tail end of rural and urban sewage or surface runoff with high pollutant concentration, a river is required to be wide, and a large-area waste land or natural wetland is required to be available. According to the system, sewage is respectively diverted into the runoff treatment landscape land and the ecological landscape pond via the ecological diversion canals, treated and then converged into the original runoff. Aiming at surface runoff, particularly rural and urban surface runoff with high pollutant concentration, the landscape park type surface runoff treatment system sufficiently develops the self-cleaning capability of soil lands and plants in combination with various suitable technical means to achieve the dual effects of pollutant treatment and landscape beautification, and can be used for treating rural agricultural runoff, urban runoff, tail water of sewage treatment plants and the like.