186results about How to "Realize multiple reuse" patented technology

The invention discloses an MOF (metal organic frameworks)-based magnetic nitrogen-doped carbon nano-tube material, a method for preparing the same and application of the MOF-based magnetic nitrogen-doped carbon nano-tube material. The MOF-based magnetic nitrogen-doped carbon nano-tube material can be used as an adsorption material. MOF are calcined at the high temperatures to obtain the MOF-basedmagnetic nitrogen-doped carbon nano-tube material. Carbon nano-tubes with large quantities of free N elements are generated on the surfaces of the MOF-based magnetic nitrogen-doped carbon nano-tube material while the appearance of the MOF is reserved. The MOF-based magnetic nitrogen-doped carbon nano-tube material, the method and the application have the advantages that the MOF are used as templates for the MOF-based magnetic nitrogen-doped carbon nano-tube material which is a magnetic carbon material prepared by the aid of the method, and are directly calcined at the high temperatures to obtain the magnetic carbon material; the carbon material is high in environmental stability as compared with MOF adsorption materials, and pi-pi conjugation can be formed by the carbon material and targetobjects by the aid of strong conjugation surfaces of the carbon nano-tubes; the MOF-based magnetic nitrogen-doped carbon nano-tube material is extremely high in magnetism as compared with commercialcarbon nano-tubes, and target object detection procedures can be simplified by the aid of MSPE (magnetic solid-phase extraction) methods; processes for preparing the MOF-based magnetic nitrogen-dopedcarbon nano-tube material are simple, and the MOF-based magnetic nitrogen-doped carbon nano-tube material which is a magnetic nitrogen-doped carbon nano-material is high in magnetism and super-high inenvironmental stability, has large specific surface areas, can be specifically bound with the target objects and has an excellent application prospect in the field of detection on the content of microcystin in lake water and the like.

The invention discloses a three-dimensional layered graphite-phase nitrogen carbide/MOF composite material and a preparation method and an application thereof; the composite material is formed by compounding g-C3N4 nanosheets and a metal-organic frameworks material, wherein the g-C3N4 nanosheets account for 1%-25% by mass. The obtained composite material takes a nitrogen carbide material having a graphene-like two-dimensional structure after stripping as a template, has addition of a metal central ion and an organic ligand and is prepared by using an oil bath solvothermal method; compared with a pure metal-organic frameworks compound, the composite material has the pore size and the pore volume significantly increased. The preparation process is simple; the obtained composite material has ultra-high organic dye removal ability, is easy to regenerate, can be used repeatedly, and has good application prospects in the fields of environmental remediation, sewage treatment and separation science and the like.

The invention belongs to the technical field of new materials and particularly relates to a recyclable, efficient, efficient, low-resistance, antibacterial and haze-preventing air filtration material. The air filtration material includes a base material layer and a filter layer, wherein the filter layer is an antibacterial agent supported nanofiber layer and is prepared by adopting an in-situ growth method, and the base material layer is made of a non-woven fabric. The air filtration material produces the step-by-step interception-barrier effect on PM2.5 and can efficiently intercept PM2.5 tiny aerosol particles, the 2.5-micron particle filtering efficiency can be up to 100%, the efficiency of filtering 0.5-micron particles and 0.3-micron particles can be up to 99%, the air resistance is 37 Pa, and the gram weight is 22.89 g/m<2>. The air filtration material is simple, convenient and easy to operate, smoke particles absorbed onto the material can be removed through washing after the material fully absorbs smoke, and multi-time repeated utilization is achieved.

The invention provides a method for producing antimicrobial peptide through fermentation of brevibacillus laterosporu. In fermentation of the brevibacillus laterosporu, when the yield of the antimicrobial peptide is no longer increased, active carbon is directly added into the fermentation liquor; as the active carbon adsorbs the fermentation product, the inhibiting effect of the product is relieved, and the density of the thallus and the yield of the antimicrobial peptide are greatly improved. According to the method, the active carbon is taken as an adsorption stripping coupling agent, has low cost, is environmentally friendly, and can be directly added in the fermentation process without being activated in advance; the antimicrobial peptide can be adsorbed without regulating the pH value of the fermentation liquor; and the method is simple and easy to promote, and the active carbon can be regenerated through desorption after fermentation, thus being recycled repeatedly, and lowering the production cost.

The invention provides a setting method of an elastic thread in an ejection type ligation device and an elastic thread ligation device. The setting method of the elastic thread comprises steps as follows: a loop is formed by the front end of the elastic thread in a slipknot form, the loop is arranged in a loop push piece at the front end of a gun head in a sleeving manner, a slipknot of the loop is clamped outside a thread clamping groove in the front end of the loop push piece, the elastic thread is arranged in the thread clamping groove, and the tail end of the elastic thread is finally clamped into a clamping groove in a gun handle and fixed in a direction of a gun barrel; the loop push piece is propped against an infected part, when an ejection block drives the loop push piece to move forwards, the loop is enabled to be separated from the loop push piece and is arranged on the infected part in a sleeving manner, the tail end of the elastic thread is taken down and tightened, the slipknot of the loop is propped by the thread clamping groove of the loop push piece, and the elastic thread is continuously tightened, so that the pore diameter of the loop of the elastic thread is reduced gradually. The invention further provides an ejection type elastic thread ligation device adopting the method. The ejection type elastic thread ligation device is simple in structure, convenient to operate, accurate in operation and applicable to treatment of hemorrhoids and other anorectal diseases, a wound surface of postoperative target tissue is small, and the probability of postoperative complications and hemorrhage can be reduced.

The invention discloses a linkage control system and a linkage control method. The linkage control system comprises a scene management unit, a trigger management unit and an execution management unit,wherein the scene management unit is used for providing an interface for defining linkage actions and linkage scenes for users and outputting linkage scenes defined by the users to the trigger management unit; the linkage scenes respectively comprise a linkage trigger condition, a linkage execution manner and a linkage action quotation; the trigger management unit is used for receiving the linkage scenes from the scene management unit, judging whether the linkage trigger conditions of the linkage scenes are satisfied or not, notifying the execution management unit if the linkage trigger conditions are satisfied, receiving execution state changes from the execution management unit and updating the states of corresponding linkage scenes; and the execution management unit is used for receiving a notification of the trigger management unit, generating corresponding linkage actions, executing the linkage actions according to the linkage execution manner and feeding the execution state change of each linkage action back to the trigger management unit. The system and the method are capable of realizing primary development and repeated utilization of software.

The invention discloses a synthesis method of N-phenyl-3(4-bromophenyl) carbazole. The synthesis method is characterized in that carbazole is selected as a raw material and is subjected to Ullmann reaction with iodobenzene to prepare N-phenyl carbazole; N-phenyl-3-bromine carbazole is synthesized by NBS (N-bromosuccinimide) bromination; N-phenyl-3-boric acid base carbazole is prepared through Grignard coupling; and N-phenyl-3-boric acid base carbazole and p-bromoiodobenzene are subjected to cross coupling to obtain N-phenyl-3(4-bromophenyl) carbazole. The method provided by the invention has the characteristics of high yield, low production cost, less three-waste emission and high target compound selectivity and yield, a high-efficiency loaded catalyst is used, and isomer is reduced.

The invention provides a method for preparing a steroid drug intermediate employing bioconversion phytosterol. The method comprises the following steps: 1) providing turbid liquid of phytosterol; 2) providing a resting cell of a microbial strain for converting the phytosterol into a steroid drug intermediate; 3) mixing the turbid liquid of the phytosterol with the resting cell, and adding beta-cyclodextrin or chemically modified beta-cyclodextrin to evenly mix, and cultivating to finish conversion; 4) centrifuging the conversion liquid obtained in the step 3), separating supernatant from thallus, separating to obtain the steroid drug intermediate from the supernatant by solvent extraction. By adopting the method provided by the invention, the sterol feeding concentration is improved, the target product quantity is increased, simple separation of the thallus, a cosolvent and a product is achieved when the conversion lasting time is shortened, repeated use of the thallus and the cosolvent for a plurality of times is achieved, the production cost is greatly saved, and the method is applicable to industrial production.

The invention discloses a super-high temperature liquid medium thermal convection experimental loop which comprises a linear track type box body heating furnace and a loop pipeline, wherein the linear track type box body heating furnace comprises a furnace body, a heater, a linear guide rail and a base frame; the loop pipeline comprises a melting tank, an extraction opening, a loop main body, an online sampling system, an air cooling dual-layer sleeve and an emptying pipe. Due to an optimized design of the linear track type box body heating furnace, specific temperature zone distribution required by thermal convection of the experimental loop is ensured; meanwhile, due to material selection and a structure of the loop pipeline, the requirement of performing a long-term corrosion experiment of a reactor candidate material in an super-high temperature thermal convection medium can be met. The super-high temperature liquid medium thermal convection experimental loop has the characteristics that the loop pipeline is simply and conveniently replaced, online sampling and installing can be realized, temperature controlling precision is high and the like, can be used for developing compatibility experiment research of the material in a flow medium, and is especially suitable for screening and developing the reactor high-temperature-corrosion-resisting material.

The invention discloses a C3N4-Bi2O3-BiOI-TiO2NTs visible-light response photocatalysis electrode as well as a preparation method and application thereof. The preparation method comprises the following steps of (1) preparing a sodium hydroxide alcoholic solution B and a bismuth nitrate pentahydrate ethylene glycol solution A containing g-C3N4, alternately leaching a TiO2NTs electrode with the solution A and the solution B, and washing the TiO2NTs electrode with absolute ethyl alcohol after each leaching; (2) drying the electrode obtained in the step (1), calcinating the electrode in air atmosphere, cooling the electrode, then flushing the electrode with distilled water, and airing the electrode so as to obtain a C3N4-Bi2O3-TiO2NTs electrode; and (3) immerging the C3N4-Bi2O3-TiO2NTs electrode into a KI ethanol aqueous solution, taking out the C3N4-Bi2O3-TiO2NTs electrode, firstly airing the C3N4-Bi2O3-TiO2NTs electrode, and processing the C3N4-Bi2O3-TiO2NTs electrode at a constant temperature of 70-90 DEG C for 8-12 hours. The preparation method of the electrode is simple; the C3N4-Bi2O3-BiOI-TiO2NTs visible-light response photocatalysis electrode is strong in visible-light response, can achieve an obvious effect on Cr(VI) wastewater treatment, has no second pollution and can be used for multiple times.

The invention discloses a method for preparing biodiesel by adopting magnetic carrier immobilized lipase. According to the method, the immobilized lipase magnetic nanoparticle catalyst is adopted for catalyzing the reaction, wherein the immobilized lipase magnetic nanoparticle catalyst is prepared by carrying out immobilization on lipase-producing bacteria by adopting magnetic nanoparticles as a carrier and by adopting a covalent cross-linking method. The technical scheme has the advantages that the technology is simple and feasible, the requirements on devices are low, the related catalyst is high in transesterification efficiency, in addition, the immobilized enzyme has high enzyme activity, is stable, is convenient to recycle and separate, and can be recycled, and moreover, strong acids and strong alkalis are not used, so that the pollution to the environment is reduced.

The invention provides a wastewater zero-discharge treatment system, which is composed of a waste-gas waste-heat utilization system, a low-temperature multi-effect horizontal pipe distillation system and an evaporative crystallization system, wherein the low-temperature multi-effect horizontal pipe distillation system is a MED (Multi-Effect Distillation) system; the waste-gas waste-heat utilization system comprises a combustion gas turbine capable of combusting gas to discharge high-temperature smoke, and a waste-heat boiler making use of the waste heat of the high-temperature smoke so as to obtain high-temperature steam; the low-temperature multi-effect horizontal pipe distillation system comprises a low-temperature multi-effect evaporator and a condenser; and the evaporation crystallization system comprises a stand-pipe falling-film evaporator making use of the high-temperature steam to purify wastewater and a drying device. The wastewater zero-discharge treatment system disclosed by the invention has the beneficial effects that low-grade energy can be used as a heating source to realize multiple reutilization of heat, so that distillation consumption is reduced greatly; and the concentration of brackish water is realized, so that crystallized salt is separated from distilled water and the zero discharge of the brackish water is realized.

The invention provides a virtual telephone calling method and device. The method comprises steps that calling instructions initiated by users are received; the calling instructions comprise virtual numbers; the users and calling objects corresponding to the virtual numbers are extracted from the pre-stored corresponding relationship list; the corresponding relationship among the virtual numbers, the users and the calling objects is stored in the list; the calling objects are called. The method is advantaged in that the want-to-call calling objects of the virtual numbers of the users are searched according to the stored corresponding relationship, problems of virtual number resource waste and the relatively low utilization rate caused by distributing the fixed virtual numbers to each set ofusers and calling objects can be avoided, multi-time reuse of the virtual numbers is realized, and the resource utilization rate of the virtual numbers is improved.

The invention belongs to the technical field of greening, and particularly relates to a roof greening device. The roof greening device comprises a frame body. A flower pond and a water storage tank are arranged on the frame body. Overflowing holes are formed in the periphery of the flower pond. A sewer is connected to the bottom of the flower pond. A drip irrigation faucet is arranged inside the flower pond. The water storage tank is connected with the drip irrigation faucet. In order to solve the problems in the prior art, the roof greening device is convenient to use, good in water drainage and storage effect, capable of reducing manpower and material resources and capable of recycling residual water to achieve the purpose of saving water resources.

The invention provides a method for preparing immobilized cellulase and a method for hydrolyzing cellulose through the immobilized cellulase. The method for preparing immobilized cellulase is a crosslinked embedding method, sodium alginate serves as a carrier, gel is formed according to the principle that a ion exchange reaction happens between oxygen atoms of OH- and COOH- in sodium alginate andCa2+, glutaraldehyde serves as a crosslinking agent, polyethylene glycol serves as a pore-foaming agent and a hydrophilic agent, and by adding polyethylene glycol, the enzyme activity immobility and enzyme activity of the immobilized cellulase can be improved, the Michaelis constant is reduced, the pore density of the carrier surface is improved, and the reduction sugar content, enzyme hydrolysisyield and TS degradation rate of enzyme hydrolysis reaction are increased. In the process of hydrolyzing cellulose through the immobilized cellulase, the cellulase can be repeatedly used multiple times. The preparing and applying methods are easy to operate, mild in immobilizing conditions, low in investment and friendly to the environment.

The invention provides a connecting and separating device based on memory alloy wire driving, which comprises a driving end and a driven end, wherein the driving end comprises a shell, an outer sleeve, a fixed sheet, a compression spring, a rotary sleeve, a base, a memory alloy wire, a guide wheel, a lock pin, a limiting sleeve I and a limiting sleeve II, and the driven end comprises a screw rod,a loading nut, a separating piece and an adapter piece; the upper end of the screw rod is a threaded section matched with the loading nut, and the lower end of the screw rod is provided with multiplelayers of inclined bulges; the multiple layers of inclined bulges extend into the upper part of an accommodating space formed by the limiting sleeve I and the limiting sleeve II; when the memory alloywire is powered on, the memory alloy wire is shortened, the base and the lock pin move upwards, the lock pin relieves limiting of the lower ends of the limiting sleeve I and the limiting sleeve II, the two limiting sleeves rotate simultaneously, the lower portions of the limiting sleeve I and the limiting sleeve II are folded, the upper portions of the limiting sleeve I and the limiting sleeve IIare opened and separated from the screw rod, and the driving end and the driven end are separated. The device realizes rapid separation, and has the advantages of no impact, energy conservation, environmental protection, small size, high reliability and reusability.

The invention belongs to the technical field of greening, and discloses a soil-free turf vertical greening control system based on a mobile terminal. The system comprises a matrix moisture monitoring system which is used for detecting the moisture content of soil; a matrix mineral substance monitoring system which is used for detecting the contents of mineral substances needed by the green plants in the soil; a soil moisture monitoring system and a soil mineral substance monitoring system, which enable the data to be transmitted to a mobile terminal control system; the mobile terminal control system which processes the received data, sends an instruction to a drip irrigation system and a fertilizer and farm chemical adding system, and enables the drip irrigation system and the fertilizer and farm chemical adding system to carry out the drip irrigation step and the fertilizer and farm chemical adding step, wherein the left water is supplied to the drip irrigation system again through a water storage filtering system. The system is characterized in that the system does not damage the territorial resources and achieves the reuse of water. The system is better in environment protection and energy saving, and has the great significance in environment protection and great practicality.

The invention discloses preparation of interface self assembled carbonyl reductase and application thereof to S-eslicarbazepine synthesis. The interface self assembled carbonyl reductase is prepared by the following method that carbonyl reductase is added into a buffer solution; then, a methylbenzene solution with dissolved polystyrene is added; oscillation reaction is performed for 2 hours in a shaking bed under the conditions of dark environment, 80r/min and 30 DEG C; centrifugation is performed; a reaction system with the upper layer being an organic phase, the interface self assembled carbonyl reductase distributed in the oil water interface, and the lower layer being a water phase is obtained; the interface self assembled carbonyl reductase is obtained; the interface self assembled carbonyl reductase has a good catalysis function in the oil and water two-phase interface; the oxcarbazepine can be converted into S-eslicarbazepine; the enantiometric excess value of the S-eslicarbazepine is greater than 98 percent. In the water phase, the coenzyme NADH can smoothly realize the in-situ regeneration; the substrate conversion rate can be favorably improved. The interface self assembled enzyme can realize the multi-time repeated utilization, the advantage is incomparable by free enzymes.

The invention provides a conduction cooling milling tool for dry milling, which includes a handle and a milling cutter installed at the lower end of the handle, and also includes a heat conduction cooling rod and a heat sink; the heat conduction cooling rod is arranged at the center of the milling cutter , the outer surface of the heat conduction cooling rod is attached to the inner surface of the milling cutter, the upper end of the heat conduction cooling rod protrudes from the milling cutter, and the outer peripheral surface of the extension end is fitted with a number of cooling fins; the center of the handle is provided with The heat exchange cavity, the coolant inlet channel and the coolant outflow channel connected with the heat exchange cavity, the extended end of the heat conduction cooling rod and the heat sink welded on the extended end are all accommodated in the heat exchange cavity. The thermal conductivity of the thermally conductive cooling rod is higher than that of the milling cutter. The invention utilizes the heat conduction principle to realize the cooling of the cutting tool during the dry cutting and milling process, so as to realize the effective milling of the dry cutting material.