71results about How to "High number of reuses" patented technology

The invention discloses a preparation method of immobilized beta-glucosidase in the field of enzyme preparations. According to the method, fructose is adopted as a pore-foaming agent, and the immobilized beta-glucosidase is prepared through the tetraethoxysilane hydrolysis reaction sol-gel method. Different immobilized beta-glucosidase samples are prepared by adding fructose water solutions with different concentrations and beta-glucosidase of different dosages. For the obtained immobilized beta-glucosidase, the invalid adsorption in the enzymolysis process of cellulose can be avoided, so that the enzymolysis conversion efficiency of cellulose is obviously improved, the immobilized enzyme has the advantages of good mechanical strength and multiple times of recycling, and the hydrolysis and saccharifying costs of cellulose are reduced.

The invention discloses a method for preparing a supported type photocatalyst by an ionic imprinting method. The preparation process comprises the following steps: (1) preparing hydroxyapatite powder; (2) preparing TiO2 sol; (3) coating the hydroxyapatite powder with the TiO2 sol to obtain TiO2/hydroxyapatite; and (4) adding heavy metal ion chitosan liquid to coat TiO2/hydroxyapatite to obtain the chitosan/TiO2/hydroxyapatite composite photocatalyst. Degradable chitosan and environment-friendly hydroxyapatite are selected in the aspect of application of raw materials, secondary pollution cannot be caused, and the environment-friendly effect is achieved; and certain heavy metal ions are introduced into the supported type photocatalyst by the ionic imprinting method, and therefore, the sewage treatment effect is improved obviously.

The invention relates to a process method for carrying out integral soldering on an armature. Before the armature is subjected to integral soldering, a commutator pre-tinning process is added; a spiral wound gasket is used for replacing an asbestos cord; the spiral wound gasket is placed between a tin pan and the armature; the tin pan is made of titanium alloy; and a PID (Proportion Integration Differentiation) intelligent control instrument is adopted to carry out temperature control and maintenance. The commutator pre-tinning process is designed from the economy, the practicality and the manufacturability and takes an important effect in the process method for carrying out integral soldering on the armature. After the pre-tinning is carried out, the reliability of the integral soldering of the armature is improved, the pseudo soldering and the missing soldering are avoided, the repair rate of the armature is reduced and the motor quality is fundamentally improved. According to the method, the armature soldering efficiency is improved for dozens of times; the temperature control and constant temperature effects are good; the liquidity of molten tin, the welding strength and the welding reliability are improved; and the integral soldering quality of the armature is improved.

The invention provides a pavement concrete channel steel forming formwork which comprises a channel steel and a triangular support, wherein the triangular support is connected with the steel channel through a sleeve welded on the concave surface of the channel steel; the other end of the triangular support is connected with a straight sleeve; an inserting rib is arranged in the straight sleeve; formwork joint sleeves are arranged at two ends of the channel steel; and joint inserting pins are arranged in the formwork joint sleeves. According to the steel channel forming formwork for pavement concrete construction, the formwork is convenient to build and remove; and the steel channel forming formwork can be repeatedly utilized, has low cost, and is beneficial to control the forming quality of the concrete.

The invention relates to a protein product reuse method. The method includes the steps of: conducting PEG (polyethylene glycol) modification on protein, when the activity decreases and the product is out of the period of validity, subjecting the product to thorough denaturation treatment, and performing refolding. The method provided by the invention has the advantages of enhancing the times of reutilization and reducing the cost. Also, in the refolding step, the concentration and the success rate of renatured protein can be effectively improved. The method has the advantages of simple process, no special additive requirement, and low cost, can be used for reuse of protein products in daily chemical, industry and other aspects so as to deal with harsh working conditions and higher cost reduction demand.

The invention discloses a method for directly recycling and reusing a fracturing flow-back fluid. The method comprises the following steps that settling and sand removing are carried out, wherein a settling tank is used for removing a propping agent and mechanical impurities in a fracturing flow-back fluid, and then the treated fracturing flow-back fluid is poured into a tank for storage; sterilization and preservation are carried out, wherein a bactericide is added into a liquid storage tank for inhibiting bacterial reproduction; flocculating and shielding are carried out, wherein a flocculating shielding agent is added before liquid preparation for shielding metal high-valence ions; the pH value is adjusted for facilitating the tackifying of a thickening agent under a weak acidic condition; then additives such as the thickening agent, a discharge aiding agent, a clay stabilizer and the like are sequentially added according to a design formula; circulation is carried out for 5-10min for forming a base solution; a cross-linking agent is added in a construction process for forming a gel; a gel breaker is added in a construction last period; after fracturing is completed, a well is closed for discharging; and the fracturing flow-back liquid is recycled and utilized repeatedly and circularly. According to the treatment method, the safety and environmental protection pressure caused by large-scale fracturing of oil fields can be effectively relieved, water resources are saved, and the economic benefits and social benefits are remarkable.

The invention discloses a magnetic immobilized yeast cell and an application thereof to synthesis of ethyl R-4-chloro-3-hydroxybutyrate. The magnetic immobilized yeast cell is prepared through the steps of performing ultrasonic dispersion on Fe3O4 magnetic granules and an amino acid aqueous solution, performing recovery and precipitation with an external magnetic field, washing the precipitate, and then performing freeze-drying so as to obtain amino acid modified magnetic nanometer particles; and performing vibration and uniform mixing on the amino acid modified magnetic nanometer particles, yeast cell freeze-dried powder and a phosphoric acid buffer salt solution so as to obtain the magnetic immobilized yeast cell. According to the magnetic immobilized yeast cell disclosed by the invention, vibration and stirring are not needed to promote mass transfer, so that the reaction time can be significantly shortened, the COBE transformation efficiency can be greatly improved, and the magnetic immobilized cells can be repeatedly recycled. After the magnetic immobilized yeast cell is reused for 13 times in an alternating magnetic field, the conversion rate is still 99.8%, and compared withthe recycling number of times of the magnetic immobilized yeast cell in in a shaking table, the recycling number of times of the magnetic immobilized yeast cell in the alternating magnetic field is increased.

The invention relates to the technical field of the artificial cultivation of the Antrodia and in particular to a cultivating method for Antrodia. The method comprises a process of preparing basswood, a process of fermenting strains, a process of cultivating and a process of harvesting. The process of preparing basswood comprises the steps of selecting Cinnamomum kanehirai row wood, slicing, drying in the sun, soaking by saline and sterilizing. The process of fermenting strains comprises the steps of implanting and cultivating. The process of cultivating is carried out in a cultivation room with the specific temperature and humidity. While the growth height of the Antrodia sporocarp on the surface of the Cinnamomum kanehirai wood pieces is 2-2.5 cm, the Antrodia sporocarp is obtained by harvesting. The triterpenes content of the Antrodia molecular structure of the Antrodia cultivated by using the method achieves to the content of the natural Antrodia, the problem of the cultivating method of artificial non-camphorwood that although the content of the triterpenes is approximate, but the molecular weight of the high-molecular compound is tens of times can be overcome, and the pharmacological function is improved manyfold.

The invention discloses a novel automatic-recovery circuit safety device based on a maleic anhydride (SMA) thermal elastic material and a working process of the device. The device comprises a current supply circuit, an alarm circuit and an automatic-recovery circuit safety switch, wherein the safety switch comprises a Ti54Ni34Cu12 shaped memory alloy wire, a fastening screw, a sliding sheet, a pre-loading spring, a current supply circuit conversion contact, an alarm circuit conversion contact, an insulation guide rail, a metal fixing clip, a primary wire and a contact conversion guide rail. By means of phase state conversion of the Ti54Ni34Cu12 with TW-SME between a low-temperature state and a high-temperature state, the timely switching between the current supply circuit and the alarm circuit is achieved. The novel automatically-recovered circuit safety device has the advantages of automatic-recovery overcurrent protection, short response time and instantaneous warning, and is convenient to install, the circuit still can be protected after the safety switch is failure, and the requirement on a working environment is relatively low; and the novel automatically-recovered circuit safety device is suitably used for various large-, medium- and small-sized industrial/civil building systems.

The invention relates to the field of protective fences, and discloses a tool type safety protective fence structure. The tool type safety protective fence structure comprises a fence defining a circumferential closed structure, the fence comprises a plurality of fence units and stand columns, the fence units are detachably connected through the stand columns, oblique tensioning ropes are connected between opposite angles of a local reinforcing structure formed by the fence units and the stand columns, and the oblique tensioning ropes between the two opposite angles of the local reinforcing structure intersect with each other; and the fence is further provided with horizontal tensioning ropes, and the horizontal tensioning ropes are arranged in the circumferential direction of the fence toform a closed loop. According to the tool type safety protective fence structure, the inclined and horizontal flexible tensioning ropes are adopted for reinforcement, the reinforcing effect of a three-dimensional symmetrical geometrical shape is generated, and the mechanical strength and safety of a protective fence are improved while convenient disassembly and assembly are guaranteed; and colorsteel tiles are installed through a tile pressing device, the requirement that the whole use process of the color steel tiles is complete and lossless can be met, and the requirements of zero pollution and environmental protection of construction waste in a standard construction site are met.

The invention relates to the technical field of water recycling and provides a building reclaimed water recycling system. The building reclaimed water recycling system comprises a water storage tank, a closestool, a water inlet pipe, a braided pipe I, a braided pipe II, a sewage discharging pipe, an overflow pipe, reclaimed water pipes and a filtering device, wherein the water inlet pipe is connected with the reclaimed water pipe at the upper floor, the tail end of the water inlet pipe is connected with the top end of one side of the water storage tank, one filtering device is arranged inside the water storage tank and is arranged below the tail end of the water inlet pipe, the overflow pipe is additionally arranged below one side, close to the filtering device, of the water storage tank, the side end of the overflow pipe is connected with the reclaimed water pipe at the floor; the closestool comprises a closestool water tank and an excrement tank, an internal thread straight joint is arranged at the bottom end of the water storage tank, a three-way pipeline is arranged at a water inlet of the closestool water tank, the internal thread straight joint is connected with one opening of the three-way pipeline by virtue of the braided pipe I, the braided pipe II is connected with the other opening of the three-way pipeline, an on-off valve is arranged on each of the braided pipe I and the braided pipe II, and a water outlet of the excrement tank is connected with the sewage discharging pipe.

The invention relates to a high-intensity retractable support. An upper bottom board is fixedly installed at the upper portions of a middle beam of the U-shaped support, each side beam of the U-shaped support and each shed leg of the U-shaped support. The two ends of the middle beam of the U-shaped support are respectively provided with a middle beam slope. The bottom of each side beam of the U-shaped support is provided with a side beam slope. The upper end of each side beam of the U-shaped support is provided with a side beam upper notch. The upper end of each shed leg of the U-shaped support is provided with a shed leg upper notch. A side beam cushion block is arranged at the position, where the middle beam of the U-shaped support and each side beam of the U-shaped support are connected, of the side beam of the U-shaped support. A first cushion block connecting and clamping cable is movably installed at each lower end face of the middle beam of the U-shaped support and the outer side of the corresponding side beam cushion block. A shed leg cushion block is arranged at the position, where each side beam of the U-shaped support is connected with the corresponding shed leg of the U-shaped support, of the shed leg of the U-shaped support. A second cushion block connecting and clamping cable is movably installed at the lower end face of each side beam of the U-shaped support and the outer side of the corresponding shed leg cushion block. The high-intensity retractable support is simple in structure, convenient to operate, high in intensity and capable of being recycled, the service life of the support is largely prolonged, and the support has good social benefits and economic benefits.

The invention discloses a biological organic composite seedling raising regulator and a preparation method thereof. The biological organic composite seedling raising regulator is prepared from the following components in parts by weight: 200 to 300 parts of a carrier, 10 to 20 parts of medium trace elements, 20 to 50 parts of organic matter, 1 to 10 parts of biological enzyme, 1 to 5 parts of biostimulant and 5 to 10 parts of beneficial bacteria. The biological organic composite seedling raising regulator can promote seedlings to absorb nutrition, reduce the number of seedlings with small andweak diseases, improve soil, improve water retention, ventilation and fertilizer retention capacity of soil, effectively inhibit soil-borne diseases in a matrix and increase the number of times of repeated utilization of the seedling raising matrix.

The invention relates to an anti-virus-pollution recyclable mask and a preparation method, and belongs to the technical field of medical equipment. The mask comprises a mask body and ear bands, and ischaracterized in that the mask body comprises an inner layer and an outer layer, the inner layer is a skin-friendly medical non-woven fabric layer and a filtering layer, the outer layer is a filtering isolation layer and an outer side layer, and an adsorption sterilization layer is further attached to the outer layer to form an antimicrobial layer to inhibit and kill pathogenic microorganisms (such as high-activity viruses) attached and adsorbed to the outer layer of the mask. The layers are located on the mask outer layer and the outer filtering layer, edible salt is safe, and the mask is harmless to the human body and free of toxic and side effects. Aiming at viruses (such as 2019 new coronavirus) with long in-vitro survival time and strong infectivity, the possibility of infection andpropagation caused by the viruses attached to the outer side of the medical mask is avoided; when epidemic situations are tense and the mask supply is short, the disposable mask can be safely and repeatedly used, equivalently, the mask productivity is increased, and good social benefits are achieved.

The invention relates to a combined type exhibition board easy to assemble and disassemble. The combined type exhibition board comprises a protective sleeve, a hexagonal tensioning lock, bearing reinforcing groove ribs, a groove connecting piece, a U-type edge sealing piece, a convex groove connecting piece, an adjusting base, an A-type buckle plate stand column, a connecting shaft, a B-type buckle plate stand column, a partition plate supporting piece, a hook and a partition plate. The exhibition board is a micro-foaming plastic hollow board. A hexagonal tensioning lock hole, a circular hole and a rectangular groove are formed in the exhibition board. The combined type exhibition board has the advantages that the structure is portable, installation is easy, the appearance is attractive, the combination is flexible, the assembled exhibition room wall can extend to form an exhibition shelf and the hook, and the combined type exhibition board particularly meets the individualized development requirement of the current exhibition industry.

The invention discloses a recyclable inner-bracing sleeve. The recyclable inner-bracing sleeve comprises inner-bracing sleeve chock plugs and an inner-bracing sleeve main part; the two inner-bracing sleeve chock plugs are respectively connected to two ends of the inner-bracing sleeve main part; the inner-bracing sleeve main part has a large end and a small end; each inner-bracing sleeve chock plug also has a large end and a small end; tables are respectively arranged in two tips of the inner-bracing sleeve main part; the inner-bracing sleeve main part is connected with the inner-bracing sleeve chock plug through the tables; the tables are connected with connecting parts of the inner-bracing sleeve chock plugs; each inner-bracing sleeve chock plug is provided with a key hole; each key hole is T-shaped; each inner-bracing sleeve chock plug can be disassembled from the inner-bracing sleeve main part by twisting at an angle of 90 degrees through the corresponding key hole; and during pouring of a concrete wall, the width of the wall is controlled, the thickness of a protecting layer of a reinforcement in concrete is controlled, the recyclable inner-bracing sleeve has functions of an inner-bracing strip, an opposite-pulling screw can be isolated from the concrete by the recyclable inner-bracing sleeve in formwork engineering, and the recyclable inner-bracing sleeve has functions of a sleeve.

The invention discloses a textile wastewater treatment method based on a Fe3O4/CNTs composite dispersed electrode, and belongs to the field of chemical and environmental protection. According to the invention, a ferroferric oxide/carbon nanotube composite material is used as a dispersed electrode, and the textile wastewater is treated by a three-dimensional electrode electrolytic cell, so that themethod has the advantages of high current efficiency, good treatment effect, large treatment capacity and low energy consumption, and can solve the problems of high COD, high pH value, large chromaticity, large water temperature and large water quantity of the textile wastewater. The ferroferric oxide/carbon nanotube composite material is used as the dispersion electrode, a disperse blue 2BLN solution is decolored under the conditions that the voltage is 17V, the electrolytic salt concentration is 1mol/L and the concentration of ferroferric oxide/carbon nanotubes is 75mg/L, the decoloring rate can reach 98.79 percent after 3 hours, and a better decoloring effect is achieved.