51results about How to "Good social effect" patented technology

The invention relates to the technical field of soil improvement, and concretely discloses a saline-alkaline land soil conditioner, and a preparation method and an application thereof. Raw materials of the conditioner comprise 400-600 parts of a biomass decomposed material, 150-242 parts of a pyroligneous liquor, 200-300 parts of charcoal powder, 4-10 parts of urea and 2-10 parts of a microbial agent. All the components are synergistically combined, so the conditioner contains abundant organic matters, provides favorable conditions for crop growth, can improve the physical and chemical properties of the soil and slowly release nutrients, improves the fertilizer utilization rate and the water holding capacity of the soil, effectively reduces the pH value of the soil and the salt content ina soil solution, delays accumulation of salt in the surface soil, and has a good improvement effect on saline-alkaline land soil.

The invention provides independently screened high-efficiency phosphate-solubilizing bacteria and a preparation method of a microbial inoculum of the phosphate-solubilizing bacteria, and belongs to the technical field of biology. The phosphate-solubilizing bacterial strain is named as Bacillus subtilis JT-1, and is identified as bacillus subtilis, which is preserved at the China Center for Type Culture Collection (CCTCC) on August 5, 2014; and the preservation number is CCTCC M 2014367. The phosphate-solubilizing bacteria can transform insoluble inorganic phosphorus into a high-quality phosphorus compound which can be directly absorbed and utilized by plants, can improve the bio-availability of the insoluble phosphorus in soil and the utilization efficiency of a phosphate fertilizer, can save a fertilizer and increase production, and have important meaning and application value in the aspects of cultivating and developing the soil ecological fertility, and keeping agricultural ecological balance.

The invention belongs to the field of health care food, and especially relates to a composition used for improving skeletal system health, and applications thereof. The composition comprises skimmed milk powder, fructo-oligosaccharide, yak bone, orange fruit powder, D-glucosamine hydrochloride, bone collagen, chondroitin sulfate, herba epimedii extract, rhizoma drynariae extract, mushroom powder, magnesium carbonate, casein phosphopeptide, and vitamin K2. The composition possesses excellent prevention effects on patients with osteoporosis and skeletal system disorders such as ankylosis, arthritis, osteoproliferation, arthralgia, and myospasm, and is capable of increasing bone mineral density, and improving skeletal system health. The composition can be used for preparing health care food capable of improving skeletal system health; application range is wide; and economic benefit and social benefit are both high.

The invention discloses a dendrobium huoshanense tree cultivation method. Dendrobium huoshanense plants are fixed to tree trunks, moss plants are arranged in water to be soaked completely, then 2-3 dendrobium huoshanense plants are taken as a whole plant to be fixed to a bark, the roots of the dendrobium huoshanense plants are wrapped by completely soaked moss and bundled and fixed by using straw ropes, the bundling positions are located at the root positions of the plants and exposed out of the roots to facilitate sprouting, the roots grow along the grains of the trees, the dendrobium huoshanense grow by absorbing nutrients brought by the trees, and finally the roots are embedded into the trees to grow with the trees together. The dendrobium huoshanense are planted on the tree trunks and are fully implanted into the surfaces of the tree trunks, and organic nutrients are produced due to the photosynthesis of leaves and delivered through the barks so that it can be ensured that dendrobium huoshanense planted on the tress are provided with sufficient organic nutrients, the barks are not removed, the trees are protected, and healthy tress growth is ensured.

The invention relates to a rice cadmium removing machine which comprises a rack, a feeding hopper, a salt leaching room, a fermentation cadmium removing chamber, an acid soaking cadmium discharging room, a drying room and a rotating type discharging hopper. All the components are sequentially arranged on the rack from top to bottom and connected with one another through movable sealing plates. By the adoption of a cadmium removing technology of the rice cadmium removing machine, salt leaching is conducted on rice grains directly, then fermentation is conducted, and next acid soaking, washing and drying are conducted. The rice cadmium removing machine and technology can act on the overall rice directly, the cadmium removing rate can reach over 90%, the rice recycling rate is larger than 92%, and more convenience is provided for application of cadmium-decreased rice to food processing in the later period.

The invention discloses a water-permeable brick pavement. The water-permeable brick pavement is composed of a base layer, a bearing layer and a face layer which are sequentially arranged from bottom to top. Meanwhile, the invention discloses a construction method of the water-permeable brick pavement. The construction method comprises the following steps of construction of the base layer, construction of the bearing layer, laying of water-permeable bricks, gap filling, maintenance and site cleaning. By means of the water-permeable brick pavement and the construction method of the water-permeable brick pavement, the social and environmental issues caused by the poor drainage and seepage effects of a traditional concrete pavement are solved. Besides, according to the method, construction is easy and convenient, cost is low, and the method is worthy of vigorous promotion.

Antrodia cinnamomea is a valuable medical fungi. At present, artificial cultivation method of antrodia cinnamomea comprise cinnamomum kanehirai linden cultivation method, solid cultivation method and liquid fermentation method. However, the cinnamomum kanehirai linden cultivation method is long in cultivating period, high in cost, but low in antrodia cinnamomea output; and the antrodia cinnamomea obtained by the solid cultivation method and liquid fermentation method is few in nutrient content. The invention provides a Chinese fir board cultivating method of antrodia cinnamomea; the method comprises the following steps: using Chinese fir boards in 5*10*25 centimeters as carriers, soaking and high-temperature sterilizing, then inoculating antrodia cinnamomea strain for cultivation; growing antrodia cinnamomea fruit bodies in association with nutrition powders on the Chinese fir boards; the obtained antrodia cinnamomea fruit bodies are high in output and short in growth period. The cultivation technology of cultivating antrodia cinnamomea without cinnamomum kanehirai is achieved, thus not only being beneficial to protecting the rare cinnamomum kanehirai resources, but also improving the development of traditional Chinese medicine enterprises of antrodia cinnamomea raw materials, thereby achieving good ecological effect, economic effect and social effect.

The invention specifically relates to a sea cucumber polypeptide and a preparation method and application thereof, belonging to the field of marine biotechnology. The preparation method for the sea cucumber polypeptide comprises the following steps: subjecting the body wall of a sea cucumber to homogenization, then carrying out hydrolysis with trypsin and papain successively, adding ethanol for precipitation of polysaccharides, carrying out centrifugation, taking supernatant, and intercepting components with a molecular weight of less than 3 kDa from the supernatant so as to obtain sea cucumber polypeptide components with a molecular weight of less than 3 kDa. Experimental results show that the sea cucumber polypeptide and the sea cucumber polypeptide components with a molecular weight of less than 3 kDa prepared by the invention have good anti-oxidation and anti-ageing effect, can be used for preparation of anti-oxidation and anti-ageing drugs or health products, and have good economic and social effect.

The invention provides explosion-proof motor connection box equipment, which comprises a connection bucket, a rotating body, a seal ring, creepage terminals, a housing, a lock catch, a pulling plate, a washer, terminal studs, cap sleeves, a base, a connection channel and a connection port, wherein the connection channel is formed in one end of the connection bucket; the rotating body is arranged at one end of the connection channel; the side wall of the rotating body is connected with the housing through bolts; the housing is connected with the pulling plate; one end of the pulling plate is connected with one end of the base; a plurality of creepage terminals are arranged on the inner surface of the base; one end of each creepage terminal is connected with a plurality of terminal studs; and each cap sleeve is arranged at one side of each terminal stud. The explosion-proof motor connection box equipment is compact in structure connection and convenient to work; an explosion-proof connection box can effectively prevent the connection box from being interfered; and if the connection box is interfered, normal working cannot be carried out in the presence of only the explosion-proof motor. Therefore, the work efficiency is improved; the explosion-proof motor connection box equipment has good social effects and economical benefits, and is suitable for popularization and application.

The invention relates to the field of microbes, and particularly discloses a microbial composition and application thereof. The microbial composition comprises Saccharomyces cerevisiae and Bacillus, wherein the ratio of the viable count of the Saccharomyces cerevisiae to the viable count of the Bacillus is 1:(1-1000). The experiment indicates that the microbial composition has the functions of regulating the aquiculture water body quality, increasing the aquiculture weight gain rate and feed coefficient and lowering the aquiculture death rate. The microbial composition can be prepared into a veterinary medicine, feed additive or water quality purifying agent for independent use, can also be blended in aquatic animal feed to be directly fed, has wide application range, and has favorable economic and social effects.

The invention discloses penicillium asturianum, which is classified as penicillium asturianum and has a strain number XK-12, and is preserved in the General Microorganisms Collection and Management Center of China, a preservation time is March 28th, 2019, and a preservation number is CGMCC No. 17198. The invention also discloses an application of the above-mentioned penicillium asturianum. The strain of the invention has excellent properties such as high temperature resistance, salt and alkali resistance, cellulase production, iron absorption and phosphorus solubilization, and can be applied to poor soil, saline-alkali land and calcareous soil restoration, straw decomposing and composting agent inoculation. The P. asturianum XK-12 strain has large sporulation quantity, is highly efficientand has the broad-spectrum plant disease biocontrol ability, can promote plant growth and is suitable for industrial production.

The invention discloses a novel water-permeable brick, produced from building waste aggregate, steel slag, Portland cement, pottery sand, machine-made sand, fine clay powder, hollow beads, flyash, a pigment, water and a water reducer. The invention also discloses a pavement construction method of the novel water-permeable brick, comprising the steps of constructing a basic course, constructing a bearing course, tiling water-permeable bricks, cementing joints, maintaining, and clearing a site. The novel water-permeable brick pavement has good drainage and permeability; rain may permeate quickly in the bearing course and permeate directly in underground formations to supplement moisture for the formations, thereby improving growth conditions for surface plants; in addition, the pavement helps relieve the urban 'hot island effect', adjust urban weather, reduce PM2.5 particulate matters in air, prevent pavement ponding, and has good social and environmental benefits.

The invention belongs to the field of environmental functional materials and biomass resource utilization, and particularly relates to a method for preparing a cubic spinel type Mn / Al oxide-sludge biochar material by a one-step hydrothermal process, and application of the cubic spinel type Mn / Al oxide-sludge biochar material. The method includes the following steps: (1) adding sludge into deionized water to uniformly disperse the sludge in a solution; (2) dissolving manganese chloride and aluminum chloride in the solution containing sludge powder, continuing to stir, and dropwise adding NaOH to the mixed solution during stirring; (3) transferring the mixed solution into a stainless steel hydrothermal reaction kettle for reaction; (4) performing natural cooling after reaction, washing sediments, obtained by filtration, with the deionized water to neutrality, and drying the sediments to obtain the cubic spinel type Mn / Al oxide-sludge biochar material. The method has the advantages of simple process, stable source and low cost of raw materials for preparation, and the like, and provides a new approach for sludge recycling; a new phosphorus adsorbent with good environmental and socialeffects is provided.

The invention discloses a high-performance feather degrading bacterium, having a classification name of Flavobacterium tirrenicum, has a strain number of X-Y4, and is collected at China Center for Type Culture Collection under CCTCC NO: M2019286 on April 23th, 2019. The invention also discloses application of Flavobacterium tirrenicum in the preparation of proline by degrading feather. The bacterium bred herein helps effectively achieve reuse of waste feather; the waste feather can be used as a liquid fertilizer for farmland irrigation; biomass resources are integrally utilized; environmentalpollution due to poultry farming is alleviated. The bacterium herein has high degrading capacity, the fermenting period is short, and a fermentation broth of the bacterium has proline content of 02% and above. The fermentation broth with rich proline can be prepared into liquid fertilizers which has the effects of promoting plant growth, relieving salt stress, relieving acid stress and the like, and the nutritional value and utilization rate of the fertilizers are increased.

The invention discloses a pressure-equalization energy recovery system for blast-furnace hot-blast stoves. The pressure-equalization energy recovery system for the blast-furnace hot-blast stoves comprises a plurality of the hot-blast stoves, a waste pressure recovery tank, a cold air pipeline, a smoke pipeline, a pressure relief pipe and a chimney, wherein a cold air stop valve and a cold air pressure-equalization valve are arranged between each of inlets of the plurality of hot-blast stoves and the cold air pipeline in parallel, a smoke stop valve is arranged between each of outlets of the plurality of hot-blast stoves and the smoke pipeline, and a cold air pressure relief valve is arranged between each of the outlets of the plurality of hot-blast stoves and the pressure relief pipe; a pressure-charging adjustment valve and a pressure-charging valve are arranged between an inlet of the waste pressure recovery tank and the cold air pipeline, and a pressure-pre-equalization valve is arranged between an outlet of the waste pressure recovery tank and the pressure relief pipe; and the smoke pipeline and an outlet end of the pressure relief pipe communicate with the chimney separately,and a main pressure relief valve is further arranged at the outlet end of the pressure relief pipe. The invention further discloses a use method of the recovery system. According to the pressure-equalization energy recovery system for the blast-furnace hot-blast stoves, during application, waste pressure during pressure relief of the hot-blast stoves can be recovered, the fluctuation of a cold airpressure during pressure-charging of the hot-blast stoves can further be reduced, and no power consumption during daily maintenance is achieved; and moreover, a more obvious effect is achieved in thecase of higher capacity of the waste pressure recovery tank.

The invention discloses a micron zero-valent iron-loaded biochar for removing hexavalent chromium, and a preparation method and application thereof, and belongs to the field of environmental functional materials and biomass resource utilization. The preparation method comprises the following steps: drying, grinding and sieving rice straws, and calcining at high temperature in a vacuum tubular furnace to obtain rice straw biochar BC; and mixing micron zero-valent iron (mZVI) with the particle size of 3000 meshes and the BC according to a mass ratio of 1: (0.25-4), putting the mixture into a stainless steel vacuum ball milling tank, putting stainless steel ball milling balls, covering and fixing, vacuumizing for 30 minutes, sealing, and operating a ball milling device for 0.5-2 hours to obtain the micron zero-valent iron loaded biochar material mZVI-BC. The technology is simple, the preparation raw materials have the advantages of being stable in source, low in cost and the like, high-concentration hexavalent chromium in the water body can be efficiently and rapidly removed, and meanwhile a new way is provided for resource utilization of the rice straw.

The invention discloses an oxidization-resisting magnesium-containing aluminum alloy with working temperature of 400 to 500 DEG C for storing energy. The alloy is prepared from the following components in percentage by weight: 8.0 to 9.0 weight percent of Sn, 29.0 to 30.0 weight percent of Mg, 14.0 to 15.0 weight percent of Si, 0.5 to 0.8 weight percent of In, 0.1 to 0.2 weight percent of P, 1.0 to 1.2 weight percent of Mn and the balance of aluminum. The material provided by the invention provides a magnesium-containing multi-element near-eutectic alloy solution for the field of energy storage of alloys; an alloy melt has excellent oxidization-resisting performance, thermal cycling performance and thermophysical performance. The current situation that the related performance of current Al-Mg binary eutectic alloys is not enough at present can be effectively overcome, and extremely great market value can be obtained while industrial problems in the field of heat storage are solved.

The invention relates to a subgrade filling method for physical improvement of fine silt, which is characterized by comprising the following steps: cleaning ground, setting gravel blind ditches, filling enveloping soil, heaping up edges with sand bags, paving and leveling sand, controlling water content, rolling, filling a top seal layer, and embedding settlement plates and displacement observation piles respectively in characteristic sections of a sand-filled subgrade as required to carry out sedimentation and displacement observation of the sand subgrade. The application of the constructionprocess has good economic and social effects. On one hand, the price of fine sand is relatively low, and the fine sand has the characteristics of good water stability, uniform settlement, and little influence from water and unfavorable seasons during construction, and the construction period can be greatly shortened during construction; on the other hand, the successful application of the processcan avoid damage to local resources and environment when soil is borrowed, can dredge a channel and protect the ecology. In some areas restricted by natural geological conditions, fine silt can be used as subgrade filler, and by adopting the scheme, basic requirements for subgrade construction can be met.

The invention belongs to the technical field of magnetic materials and in particular relates to a dry-process pre-sintering sampling inspection method. The invention aims to provide an inspection method adopting different sampling occasions. According to the sampling inspection method disclosed by the invention, the defect that the final product is unqualified due to a certain batch of unqualified products in the conventional inspection method can be overcome. After the sampling inspection method disclosed by the invention is used, the dry rotary kiln process comprises the following steps: treating the raw materials, weighing and batching, adding an additive, performing dry-process strong mixing, pelletizing, drying, performing oxidation presintering and inspection, cooling, crushing and blending. According to the dry-process pre-sintering sampling inspection method disclosed by the invention, the sampling is performed in the oxidation presintering step of the dry rotary kiln process, and subsequent inspection is performed.

The invention discloses an automatic monitoring method for a power system line fault. The method comprises the following steps: (1) a fault finding system is established: a plurality of fault indicators and a plurality of communication terminals are installed on a power line; (2) a monitoring center establishes a topological graph based on software, wherein the fault indicators and the communication terminals in the topological graph respectively have address information with the unique numbers; (3) the monitoring center establishes a set F[M][N] of all the fault indicators in the line; (4) the monitoring center establishes a branch warning information set B[D][E]; (5) an effective warning information set G[H] is established; (6) management personnel are informed of all effective warning information in the G[H], the steps (4), (5) and (6) are repeated, or the monitoring center waits, and the automatic monitoring of the power system lien fault is achieved. By means of the automatic monitoring method for the power system line fault, effective warning information of the power line is effectively monitored, and the management personnel is informed of the information, time and labor are saved, efficiency is high, social effect is good, false alarming is avoided, and the requirement for fast development of modern industries is met.

The invention discloses a dustless vibration sieve powder recovery device, comprising a dustproof cover and a vibration body; a middle position of the dustproof cover is provided with a charging port, the dustproof cover is mounted on a sieving disc by a compressing ring, a discharging port is arranged in one side of the sieving disc, a plurality of sieving discs can be mounted, meanwhile the lower side edge of one sieving disc and the upper side edge of another sieving disc are fixed by a compressing ring, the lower side of the sieving disc is connected to the upper side edge of a base by damping springs, a sieve net is fixed on the bottom side in each sieving disc, the vibration body is fixed on the bottom surface of each sieving disc, a vibration electric motor is arranged in each vibration body, an upper part counter weight is mounted on the upper side of each vibration electric motor, and a lower part counter weight is mounted on the lower part of each vibration electric motor. The dustless vibration sieve powder recovery device is efficient, lightweight and complete and diversified in series, has multiple levels, can meet the requirements on sieving of powder materials, and can recover the powder with unqualified diameters.

The invention provides a tower crane position limiter structure which comprises a shell, pressing plates, a bolt, a rubber ring, a screw rod, a guide rod, a movable nut, a bearing, a screw plug, an end cover, a limiting switch, screws and a nut. The pressing plates and the guide rod are arranged in the shell. The movable nut in the shell is arranged on one side of the guide rod, and one end of the movable nut is located on one side of the nut. The bolt is arranged at one end of the shell, and the rubber ring on one side of the bolt is arranged at the top end of the shell. One end of the screw rod is arranged in the end cover, and the end cover is arranged at one end of the shell. The limiting switch is arranged in the shell and is closely connected through the screws. The structure is stable and close in connection, and the tower crane position can be effectively limited by the limiting switch. Work efficiency is improved, use is facilitated, the service life is long, good social effects and economic benefits are achieved, and the structure is suitable for being used and popularized.

The invention relates to a composition for promoting children bone growth and development and a preparing method and application thereof. The composition is prepared from, by weight, 0-50 parts of whole milk powder, 2-10 parts of milk minerals, 0-5 parts of D-glucosamine hydrochloride, 0-10 parts of fructo-oligose, 0-5 parts of orange fruit powder, 5-10 parts of casein phosphopeptide and 5-10 parts of colostrum basic peptide. The preparing method includes the steps of mixing all the raw materials in proportion, adding water for homogenization treatment and then homogenization sterilizing treatment, conducting concentrating under vacuum, and finally conducting centrifuging, spray-drying, subpackaging and sterilizing to obtain the final product. The composition has the advantages that the composition can remarkably relieve series clinical symptoms caused by calcium deficiency, increase the bone mineral density and have the height increasing and bone system health promoting effects for children in the rapid growth and development stage; the composition can be used for preparing healthcare food for promoting bone system health, is wide in application range and has good economic and social effects.

The invention belongs to the field of healthcare food, and relates to a composition with the functions of delaying senescence and prompting hair growth and application thereof. The composition is prepared from radix astragali, radix angelica sinensis, radix polygonum multiflorum preparata, herba ecliptae, fructus mori and the like. The composition can solve the problems of lusterless complexions, qi deficiency, scant hair, lusterless hair and the like in various ways on multiple levels, and achieves the effects of delaying senescence and nourishing and caring hair. On the basis, by adding sea cucumber polypeptide powder, the antioxidant activity of the sea cucumber polypeptide powder and the composition can be further significantly improved, senescence can be delayed, hair follicles can enter the growing period fast, the number of hair follicles can be increased, and thus the effect of promoting hair growth can be achieved. The composition can be applied to healthcare food for delaying senescence and prompting hair growth, is wide in application range and has good economic and social effects.

The invention discloses an electric horizontal rolled clamp and a using method thereof. The electric horizontal rolled clamp comprises a hanging beam, a hanging shaft device is arranged in the middle of the hanging beam, clamp arms are arranged on the two sides of the lower portion of the hanging beam correspondingly, a gear motor is arranged on the upper surface of the hanging beam, the bottom of the hanging beam is open, telescopic beams are arranged on the front side and the rear side inside the hanging beam correspondingly, a rack is transversely arranged on the inner side surface of each telescopic beam, the output end of the gear motor is connected to a transmission mechanism, the transmission mechanism comprises an output shaft, a gear meshing with the two racks at the same time is installed at the end part of the output shaft, each clamp arm is fixedly connected to one telescopic beam, the whole clamp arm is of a long-strip-shaped frame structure, a rectangular opening is formed in the lower portion of each clamp arm, a clamp claw assembly is movably arranged in the opening, guide frames capable of moving up and down on the outer sides of the clamp arms are arranged on the outer sides of the clamp arms, and guide rail connecting rod mechanisms are movably arranged between the guide frames and the corresponding ends of the hanging beam. By means of the electric horizontal rolled clamp, the problem that the electric horizontal rolled clamp collides or rubs steel coils can be effectively solved, the steel coil yield is increased, the equipment failure rate is reduced, and the equipment maintenance cost is reduced.

A system for purifying mother liquid steam of polytetrafluoroethylene dispersion liquid comprises a concentration kettle (1), a defoaming pot (2), a gas-liquid separator (3) and a falling film absorption tower (4). A steam exit of the concentration kettle (1) is connected to an entrance of the defoaming pot (2). An exit of the defoaming pot (2) is connected to a feeding port of the gas-liquid separator (3). A gas exit of the gas-liquid separator (3) is connected to the falling film absorption tower (4). A liquid exit of the gas-liquid separator (3) is connected to the concentration kettle (1). A method for purifying mother liquid steam of polytetrafluoroethylene dispersion liquid by using the system is further provided.

The invention belongs to a computer figure display technology, and relates to an aerial figure processing system based on ARM. The aerial pattern processing system comprises a hardware part and a software part, wherein the hardware part is composed of a micro-processing circuit, a communication circuit, a button acquisition circuit and an AD conversion circuit; the software part comprises a software environment and a software logic structure. On the basis of achieving existing functions, the function and performance of a display type product are improved; meanwhile, the quantity of chips is greatly reduced, the occupied area is reduced, the development difficulty is lowered, and the project development cycle is shortened.

A low-voltage cable branch box working condition online adjustment alarm system comprises a working condition information collection module, a temperature / humidity adjustment system, a working condition indicator, a front-end controller, a background server and alarm management application software. When it is detected that the temperature / humidity index in the box exceeds the early warning line and the detection data still exceeds the limit after continuous waiting for a period of time, a temperature / humidity adjusting system is started to adjust the temperature / humidity in the box, so that the branch box operates in the technical parameters; the self-temperature / humidity adjusting system is started; over time, the temperature / humidity information collection unit and the front-end controller carry out detection and working condition judgment on the temperature / humidity in the box again; if the mobile phone APP module is still in the early warning state, the front-end controller actively sends corresponding alarm signals to an administrator and a safety inspector, prompt is repeatedly carried out at certain time intervals in the mobile phone APP module, and alarm is stopped until the mobile phone APP module is queried manually. According to the invention, the uncertainty and blindness of the maintenance plan can be effectively avoided, and the work intensity of an administratoris reduced.

The invention relates to an oxygen separation device and process. The oxygen separation device provided by the invention is established by using a mixed conductor oxygen permeable membrane as a base and comprises an air pressurizing system, an oxygen separation system, a vacuuming system and necessary pipelines, valves and gas storage tanks. By adopting the oxygen separation device, air in the atmosphere can be directly separated to obtain oxygen of which the purity is as high as 99.99%, continuous production of high-purity oxygen can be achieved, large-scale oxygen supply demands can be met,in addition, a medium / small-size direct oxygen supply device which is easy to move and is convenient and flexible can be manufactured, the device is small in floor space, simple and convenient in operation process and reliable in operation, and the service life of an oxygen permeable material is long. Compared with the prior art, the device adopts the cheap air as a raw material, is capable of continuously making high-purity oxygen of which the purity is 99.99%, uninterruptedly providing oxygen supply for 24 hours and meeting industrial and laboratory requirements, and has very good application prospects.

The invention belongs to the technical field of bridge engineering, and particularly relates to a stiffening longitudinal beam structure for enhancing the robustness of a half-through arch bridge suspension bridge system and a construction method thereof. The large pipe unit and the small pipe unit are connected in a sleeved mode, the supporting pipe unit is inserted, and the anchoring steel plate unit is installed, so that the effect of installing the stiffening longitudinal beam structure between the two cross beams is achieved. The stiffening longitudinal beam structure has the advantages that the steel structure stiffening longitudinal beam is light in weight, large in rigidity and easy to connect, the overall rigidity and stability of a suspension bridge road system are greatly improved, inconsistent deformation, caused by temperature changes, of a bridge floor and the stiffening longitudinal beam can be fully released, impact force generated by suspender breakage can be borne on a certain length, and the robustness of the suspension bridge road system is enhanced; major accidents can be effectively avoided, and good economic value and social effect are achieved.