66results about How to "Improve clearance" patented technology

The invention discloses a modified hollow fiber membrane which is composed of a separation layer, a supporting layer and a macroporous layer, the pore diameters of the separation layer, the supporting layer and the macroporous layer are sequentially increased, and a preparation method of the modified hollow fiber membrane comprises the following steps: weighing polyether sulfone / polysulfone, a pore-foaming agent, a solvent, an organic macromolecular additive and an inorganic salt additive according to the proportion to prepare a spinning solution; stirring and dissolving at 80-180 DEG C, centrifugally filtering, defoaming at 40-80 DEG C to obtain a spinning solution, carrying out coagulating bath on the spinning solution, molding, cleaning, stretching and drying to obtain the modified hollow fiber membrane. According to the preparation method, micromolecular inorganic salt pore-forming agents with different concentrations are added into a spinning solution and a coagulating bath, and interaction among inorganic salt, a polymer and a solvent is utilized, so that an inner skin layer structure and an outer skin layer structure of the hollow fiber membrane are adjusted, and a unique three-layer structure of a separation layer, a supporting layer and a macroporous layer is formed; the hydrophilic performance is stable, and the clearance on middle molecules is improved.

The invention belongs to the technical field of microorganisms, and particularly relates to a preparation method and application of probiotic fermented apple juice. The probiotic is Kluyveromyces marxianus CICC 32017, and the Kluyveromyces marxianus can overcome the defects that the fruit and vegetable juice is insufficient in fragrance and heavy in raw and green taste when being singly fermented by lactic acid bacteria. The method for preparing the fermented apple juice comprises the following steps: juicing apples; performing enzymolysis; performing sterilization; the method comprises the following steps of: inoculating the apple juice with a Kluyveromyces marxianus CICC 32017 or a mixed microbial agent of the Kluyveromyces marxianus CICC 32017 and lactobacillus plantarum CICC 21801, and culturing for 48-72 hours in a constant-temperature incubator at the temperature of 30 DEG C, so that a large amount of organic acid is generated after fermentation is finished, the DPPH free radical scavenging rate and the ABTS free radical scavenging rate of the fermented apple juice are higher than those of a control group, the oxidation resistance is remarkably improved, meanwhile, aroma substances are increased, and the taste of the apple juice is improved. The quality of the fermented apple juice is greatly improved.

The invention discloses a casein-sourced multifunctional peptide, and belongs to the field of food science and nutriology. The casein is subjected to enzymolysis through pepsin, a method combining activity verification and mass spectrum identification is adopted, the novel multifunctional peptide YPE with a clear sequence is screened and verified, the highest ABTS clearance rate of the casein peptide YPE can reach 77.76%, the highest hydroxyl radical clearance rate of the casein peptide YPE can reach 40.18%, and the casein peptide YPE can be used for preparing the novel multifunctional peptide YPE. The inhibition rate of alpha-glucosidase reaches 30.47%, the inhibition rate of escherichia coli is 10.18%, and the limitation of an existing single-function peptide in application is overcome.

The invention discloses a method for brewing high-quality antioxidant Luzhou-flavor liquor in a semi-solid state. The method comprises the following steps: separating glutinous sorghum serving as a wine brewing raw material into sorghum rice and sorghum peel through rice milling, recovering residual starch in the sorghum peel by adopting alpha-amylase and saccharifying enzyme, releasing different tannins by adopting cellulase, and depolymerizing tannin dissolved in the sorghum peel and a solution by adopting laccase to release tannin with different structures, so as to obtain tannin enzymatic hydrolysate; the enzymatic hydrolysate is added into the steamed peeled sorghum rice according to a certain proportion, so that the thermal destructive effect of the steamed material on tannin in the sorghum rice is avoided; and adding yeast for making the white spirit in a semi-solid state to obtain the white spirit which has the antioxidant activity exceeding 80% compared with that of the existing white spirit and meets the national standard of semi-solid Luzhou-flavor white spirit. Compared with the traditional baijiu brewed by steaming sorghum, the total ester content of the baijiu brewed by adding the tannin enzymatic hydrolysate is increased by 87.50-102.27%, the free radical scavenging rate of DPPH is increased by 134.16-158.71%, and the content of guaiacol substances (4-ethyl guaiacol and guaiacol) is increased by 160.69-166.90%.

The invention relates to the technical field of ganoderma lucidum fermentation processes, and particularly discloses an aspergillus cristatus ganoderma lucidum fermentation process which comprises the following steps: S1, transferring a fungus block into a 5% NaCl + MYA solid culture medium in a super clean bench, culturing for 7 days under the condition of constant temperature and constant humidity of 28 DEG C, and repeating the process twice to activate a strain; inoculating the activated strain to a 5% NaCl + MYA plate culture medium, and culturing for 7 days under the condition of constant temperature and constant humidity of 28 DEG C; the method comprises the following steps: adding a proper amount of sterile water into an aspergillus cristatus flat plate cultured for 7 days, scraping spores, adding 1mL of spore liquid into a centrifugal tube filled with glass beads, shaking to break wall of ascospores, counting by using a blood cell counting plate, and diluting into spore suspension with corresponding concentration; s2, weighing a proper amount of ganoderma lucidum blocks, putting the ganoderma lucidum blocks into a fermentation bottle, adding distilled water, sterilizing for 20 minutes at 121 DEG C, cooling to room temperature, inoculating a proper amount of spore suspension, and culturing for 10 days at constant temperature and humidity at 28 DEG C; the aspergillus cristatus fermented ganoderma lucidum sporocarp obtained by the method is high in biological activity, and the bitter taste of ganoderma lucidum is obviously improved.

The invention relates to the technical field of amino acid compositions, and discloses a compound amino acid composition for enhancing telomerase activity, which comprises the following components (by weight): 20-25 parts of L-arginine; 15 to 20 parts of L-lysine; 25 to 30 parts of L-glutamine; 10 to 15 parts of L-serine; 5 to 8 parts of L-glycine; 3 to 5 parts of L-proline; 2 to 4 parts of N-acetyl-L-cysteine; 1 to 2 parts of L-tryptophan; 1 to 2 parts of beta-alanine; 2 to 3 parts of L-carnitine; 1-2 parts of taurine; through the synergistic effect of multiple mechanisms, the compound amino acid composition not only significantly enhances the telomerase activity (up to 195%), but also can maintain the telomere length, inhibit cell aging and provide antioxidant protection. The comprehensive regulation effect is derived from a unique metabolic network formed among the components, and mutual promotion and regulation are realized. Experimental results show that the long telomere length (8.3 kb vs control group 7.1 kb) can be maintained in 30-day long-term culture.

This utility model discloses an environmentally friendly, high-cleanliness steel drum edge-rolling clamping device, including a base, a square box fixedly connected to the upper surface of the base, a cleaning component disposed on the upper surface of the base, two connecting columns disposed in front of the square box, and two arc-shaped clamping claws fixedly connected to the outer surface of each connecting column, and a power component for driving the connecting columns to move inside the square box. This device uses an electric push rod of the cleaning component to move the square base and the rinsing nozzle up and down, allowing adjustment of the rinsing position according to the height of the steel drum. Furthermore, the pump pressurizes and delivers the cleaning liquid from the storage tank to the nozzle, greatly increasing the rinsing pressure and improving the oil removal rate. The power component drives the T-shaped slider and connecting columns to move via an electric telescopic rod, causing the arc-shaped clamping claws to automatically adjust the clamping position according to different sized steel drums, thus adapting to different specifications of steel drums and achieving a secure fixation.

The application discloses a kind of cyanobacterial polysaccharide and PVA composite material preparation method, comprising the following steps: S1: PVA and cyanobacterial polysaccharide are dissolved in deionized water to obtain premixed solution;S2: crosslinking agent ethylene glycol diglycidyl ether is added to the premixed solution prepared in step S1 and heated to react, to obtain mixed solution;S3: tannic acid is added dropwise to the mixed solution prepared in step S2 to obtain film forming liquid, and the film forming liquid is laid flat and dried to obtain a cyanobacterial polysaccharide and PVA composite film.The application forms a crosslinked network structure by PVA, cyanobacterial polysaccharide and ethylene glycol diglycidyl ether through ring-opening reaction, while meeting biocompatibility and mechanical properties, it can greatly improve the barrier property of the material, and can be used as functional packaging film, fresh-keeping adsorption gasket, etc. for fresh fruits and vegetables, livestock and poultry meat food storage and transportation.

The invention discloses a refining process capable of reducing loss of squalene in camellia oleifera seed oil. The refining process comprises the following steps: 1) degumming crude camellia oleifera seed oil; (2) deacidification; 3) deodorization: introducing water vapor into the deacidified oil subjected to deacidification treatment under the condition that the temperature is 110-120 DEG C, carrying out distillation deodorization for 30-45 minutes, then cooling, adding the nigre obtained by deacidification in the step 2), and carrying out adsorption treatment; 4) decoloring; and 5) winterizing to obtain the refined camellia oleosa seed oil. According to the method, the temperature of steam distillation deodorization can be reduced, the time of steam distillation deodorization is shortened, the energy consumption of steam distillation deodorization and the loss of squalene are reduced, and the quality of the refined camellia oleosa seed oil is improved; moreover, the removal rate of benzo (a) pyrene, di-n-butyl phthalate (DBP) and di (2-ethyl) hexyl phthalate (DEHP) can be effectively improved, and the safety of the camellia oleifera seed oil is improved.

This invention discloses a dual-filtration sequential high-clearance hemodialysis filtration device and method, belonging to the field of medical device technology. The invention comprises five units: dual-filtration sequential filtration, parameter acquisition, intelligent control, fluid delivery, and flushing / reinfusion. The filtration unit consists of a primary coarse filter, a secondary fine filter, and a dialyzer connected in series, all using micro-wave-shaped hollow fiber high-flux polysulfone membranes to achieve graded convection filtration of medium and large molecules and diffusion clearance of small molecules based on gradient pore sizes. The parameter acquisition unit acquires real-time data from the entire process using multiple sensors. The fluid delivery unit provides power and fluid delivery using a precision adjustable pump. The intelligent control unit incorporates three core algorithms to drive the coordinated operation of each unit, achieving intelligent preoperative parameter matching, dynamic intraoperative adjustment of transmembrane pressure and other process parameters, and postoperative sequential alternating flushing of the two catheters. This invention achieves graded blood purification and safe reinfusion of residual blood, improving the efficiency and intelligence level of dialysis filtration.

This invention belongs to the field of biological sample contaminant screening, specifically involving a pretreatment method for liquid chromatography-tandem mass spectrometry analysis of chemical contaminants in serum. The pretreatment method includes the following steps: (1) Preparation of Ti / Zr MOF: Zirconium source, 1,3,5-tris(4-carboxyphenyl)benzene, titanium source, and organic acid are placed in a container, dissolved in an aprotic polar solvent, heated to react, cooled, and the white powder product is collected by centrifugation and washing, which is Ti / Zr MOF, and dried for later use; (2) Extraction: The serum sample is mixed with acetonitrile, ultrasonically vortexed, centrifuged, and a portion of the supernatant is taken as the purification solution; (3) Purification: The purification solution in step (2) is mixed with the Ti / Zr MOF in step (1), ultrasonically vortexed, centrifuged, and the supernatant is taken to obtain the purified sample.

The utility model discloses a carton processing and conveying cleaning device, including device main part still includes setting conveying assembly on device main part, setting dust extraction assembly on device main part, install filter assembly on dust extraction assembly, first fixed bolster fixed mounting on device main part, first threaded rod on first fixed bolster is screwed, first knob fixed connection first threaded rod one end, first sliding seat sliding connection on device main part, first motor fixed mounting on first sliding seat. Through first motor work drive rotation axis and rotary support overturn, by installation component and cleaning roller body overturn alternation and carry out cleaning work, this alternation mechanism completely changed traditional single cleaning roller need to stop and dismantle replacement mode, will clean the roller replacement and cause production line interruption time to shorten greatly, avoid the production stagnation caused by long time stop, effectively guarantee the continuous operation of production line, thereby significantly improve overall production efficiency.

The present application relates to a kind of anticoagulation, anti-oxidative stress hemodialysis apparatus and preparation method, belong to biomedical polymer and hemodialysis field.Oxygen-containing functional group carbon dots, anticoagulation monomer, initiator and crosslinking agent are added into water, to obtain modified liquid of anticoagulation and anti-oxidation;Protective gas is introduced into hemodialysis apparatus to remove oxygen, then modified liquid is introduced into dialysis apparatus, then sealing heating is carried out to initiate anticoagulation monomer in situ polymerization on the surface of dialysis membrane, and the oxygen-containing functional group carbon dots form gel microspheres under the wrapping of polymer, i.e., anticoagulation, anti-oxidative stress hemodialysis apparatus is obtained.The APTT of modified dialysis apparatus can reach 600s, and the removal rate of DPPH and ABTS free radicals is 71.25% and 97.47% respectively.The present application only needs to carry out one-step surface modification to dialysis apparatus finished product, which can give hemodialysis apparatus the dual functions of anticoagulation and anti-oxidative stress, is simple and convenient, and has good application prospect.

This utility model discloses a heat pump air conditioner with a cleanable photovoltaic module, comprising: a heat pump air conditioning unit, an externally mounted multi-mode self-cleaning mechanism and an installation mechanism, the heat pump air conditioning unit and the photovoltaic module being electrically connected via a controller and a battery, the multi-mode self-cleaning mechanism including an installation plate mounted on the bottom of the heat pump air conditioning unit, a telescopic support column fixedly connected to the upper end of the installation plate, a photovoltaic frame fixedly connected to the upper end of the telescopic support column, a photovoltaic panel body mounted on the photovoltaic frame, and a guide plate fixedly connected to the upper surface of the photovoltaic frame. This heat pump air conditioner with a cleanable photovoltaic module can utilize a three-in-one multi-mode cleaning execution unit to perform adaptive cleaning of the photovoltaic panel during self-cleaning, improving dust removal rate and bird droppings removal time, resulting in a cleaner photovoltaic panel surface and enhancing the practicality and cleaning effect of the device.

The invention provides an LED display screen electrostatic elution dust removal device and method, and belongs to the field of LED display screen dust removal. The device comprises an electrostatic generator, an electrostatic dust collection rod integrating a blowing and sucking module and a washing and mopping module, a dust collection bin and an anti-static cleaning liquid supply module. The core is that efficient dust removal and self-cleaning are achieved through a precise and controllable static positive and negative switching mechanism in cooperation with blowing and suction cooperation, roller washing and mopping and anti-static cleaning liquid supply functions, a conductive dust removal head generates static electricity to adsorb dust on the surface of a screen body through positive voltage, the blowing function assists in breaking stubborn dust viscosity, roller washing and mopping strengthens physical stripping, and the dust removal effect is good. The dust collection function captures fine dust; the reverse voltage generates a reverse electric field to separate the dust removal head from dust on the surface of the roller, and centralized collection of dust is accelerated by cooperating with a blowing and sucking function; the problems that an existing dust removal mode is poor in fine / stubborn dust removal effect and prone to secondary pollution, and the self-cleaning capacity of tools is insufficient are solved, and the LED display screen dust removal device is suitable for daily cleaning and maintenance of various LED display screens.

This invention discloses a method for preparing Hu sheep bone polypeptides, belonging to the field of polypeptide preparation technology. Specifically, it involves pretreating fresh Hu sheep bones to obtain Hu sheep bone powder, and then enzymatically hydrolyzing the Hu sheep bone powder to obtain Hu sheep bone polypeptides. The enzymatic hydrolysis uses a complex protease, including trypsin and papain, with a mass ratio of trypsin to papain of 1:0.1-10. The enzymatic hydrolysis is purified using silica gel column separation. The silica gel column packing material includes silica gel or modified silica gel. In the preparation of modified silica gel, the silica gel is first activated with acid, then functionalized with 3-aminopropyltriethoxysilane, and then reacted with a modified monomer, cyclohexylvinyl ether, to obtain modified silica gel. This invention also discloses a method for preparing Hu sheep bone polypeptides with high hydroxyl radical scavenging rate, high calcium chelation rate, and good cell proliferation effect after calcium chelation.

This invention relates to the field of microbial technology, specifically to Kluyveromyces martensii YF51-1 and its application in semi-dry fermented whey wine. This strain can efficiently ferment lactose and galactose, while also exhibiting a high ABTS scavenging rate. The fermentation broth contains a high amount of amino acid nitrogen. Under conditions where sucrose is present, the amino acid nitrogen content in the sweetened whey fermentation broth is significantly higher than that in the unsweetened whey fermentation broth. Through process optimization, the optimal fermentation conditions for strain YF51-1 were obtained, ultimately producing a semi-dry whey fermented wine with a rich aroma and a sweet and sour taste, achieving an amino acid nitrogen content of 0.337 g / L, significantly higher than existing technologies. Through optimization of the freeze-drying process, a freeze-drying protectant suitable for strain YF51-1 was derived. This protectant consists of mannose, corn steep liquor powder, lysine, and calcium chloride. After optimization, this protectant demonstrates good protective effect on the strain, with a survival rate of up to 97.22%.

This utility model relates to the field of cable production winding technology, and discloses a cable production winding device, including a cable, a winding device for winding the cable, a guide device for guiding the cable's direction, and a cleaning device located in front of the guide device for pre-treating and cleaning the cable's outer wall. The cleaning device includes a fixing component and a cleaning component. The cleaning component includes a cleaning tape for direct contact with the cleaned cable, a cleaning shaft for storing the cleaning tape to be used, a take-up shaft for retrieving the used cleaning tape, a guide wheel for changing the direction of the cleaning tape, and a cleaning motor for providing power to the take-up shaft. This application fundamentally avoids damage to the cable's outer wall from impurities during the winding process, effectively ensuring the integrity of the cable's insulation and protective performance, significantly extending the cable's service life, reducing the risk of safety failures caused by damage to the cable's outer wall, and providing a stable and reliable cable product for subsequent use scenarios such as power transmission.

The invention belongs to the technical field of food processing, and relates to garlic essential oil microcapsule peanut butter and a preparation method thereof.The preparation method specifically comprises the steps that original peanut sauce serves as a substrate, butter accounting for 11.5%-13.5% of the original peanut sauce, salt accounting for 1.0%-1.4% of the original peanut sauce and white granulated sugar accounting for 2.5%-3.5% of the original peanut sauce are added, then the mixture is placed in a water bath at the temperature of 90 DEG C to be melted, and after melting, the garlic essential oil microcapsule peanut butter is obtained; adding monoglyceride and welan gum which account for 2% of the total amount, continuously performing water bath for 2 minutes, then taking out, adding garlic essential oil microcapsules which account for 0.5-1.5% of the peanut raw sauce, putting into a water bath at 84-90 DEG C, heating and stirring for 10-14 minutes by adopting an electric stirrer at a rotating speed of 550-650r / min, putting into a pre-sterilized glass bottle after uniformly stirring, and cooling in a refrigerator at 4 DEG C, so as to obtain a finished product. The stable garlic essential oil microcapsule peanut butter is obtained. The antioxidant performance of the peanut butter is improved while the taste of the peanut butter is enriched, and the centrifugal oil separation rate of the peanut butter is reduced.

The utility model relates to vehicle technical field provides a kind of front end frame and vehicle with it.The front end frame includes the main body, first frame, second frame, third frame and fourth frame that integrally injection moulded piece is respectively;The first frame and the second frame are located in the width direction side of the main body, the first frame and the second frame are spaced apart in the height direction of the main body, and the first frame and the second frame are connected with the main body respectively;The third frame and the fourth frame are located in the width direction side of the main body, the third frame and the fourth frame are spaced apart in the height direction of the main body, and the third frame and the fourth frame are connected with the main body respectively.According to the front end frame provided in the utility model embodiment, the improvement of the gap difference of the front part area of vehicle is realized, and the use experience of consumer is improved.

The invention belongs to the technical field of cosmetics, and particularly discloses an anti-oxidation fucoidan composition for delaying skin stem cell aging and a preparation method and application of the anti-oxidation fucoidan composition. The antioxidant algin composition is prepared from the following components in parts by weight: 5 to 10 parts of algin extract, 5 to 10 parts of herba houttuyniae extract, 2 to 4 parts of black pine needle extract, 4 to 6 parts of sorbitan olivate, 4 to 6 parts of squalane, 5 to 10 parts of glycerol, 0.1 to 0.5 part of sodium hyaluronate, 0.1 to 0.5 part of xanthan gum, 0.1 to 1 part of ethylhexylglycerin and 0.1 to 1 part of p-hydroxyacetophenone. The invention discloses an antioxidant fucoxanthin composition for delaying skin stem cell aging and a preparation method and application thereof. The antioxidant fucoxanthin composition is high in antioxidant capacity and capable of effectively promoting collagen synthesis and delaying skin stem cell aging.

The invention discloses a method for enhancing oxidation resistance of caramel color, which comprises the following steps: (1) mixing an amino acid solution and a caramel color solution according to different volume ratios to obtain a mixed solution; (2) adjusting the pH value of the mixed solution; and (3) heating the mixed solution, carrying out condensation reflux, and cooling. By adjusting Maillard reaction conditions and controlling the UV-Vis absorbance and fluorescence intensity of a reaction system, the oxidation resistance of the caramel color food can be effectively improved, and the caramel color food is endowed with good oxidation resistance, so that oxidative deterioration of the food is prevented or delayed, and the shelf life of the food is more remarkably prolonged.

The utility model provides a control circuit and an electric toothbrush, which are applied to the electric toothbrush, and the control circuit comprises a power supply circuit, an information acquisition circuit, a motor driving circuit, a main control circuit, a pressure sensing lamp circuit and a Bluetooth communication circuit. The operation state of the electric toothbrush is monitored in real time, the operation state comprises the pressure applied during tooth brushing, when it is detected that the pressure exceeds the safety threshold value, a user is prompted to adjust the force through tactile feedback and optical warning, and gingival injury and tooth hard tissue abrasion caused by excessive pressure are avoided. Meanwhile, a motor driving circuit is adopted to drive a motor to form sound wave vibration, so that water flow and toothpaste foam form micro jet flow which permeates into blind areas such as tooth slits and gingival sulcus which are difficult to cover by a traditional vibration type scheme, the dental plaque removal rate is increased, and the risk of caries and periodontal diseases is reduced. In addition, the operation state information of the electric toothbrush is synchronized to the mobile terminal through the Bluetooth communication circuit, and the user is helped to establish a scientific tooth brushing habit.

The invention discloses a plant lactobacillus derived from sour dough and an application thereof, belonging to the technical field of microorganisms. The invention screens a plant lactobacillus L23104 from sour dough, which is deposited in the China General Microbiology Center with a deposit number of CGMCC No. 29668. The strain has the ability to efficiently produce extracellular polysaccharides, and the extracellular polysaccharides have the effect of inhibiting free radical activity, which can enhance the quality of fermented food and improve the safety of fermented food, and has broad application prospects.

The present invention discloses a degradable biocomposite film based on protein fiber reinforcement, a preparation method and an application. The degradable biocomposite film based on protein fiber reinforcement claimed in the present invention is prepared from a biodegradable polymer material solution, a protein fiber solution, glycerol and water, wherein the protein fiber solution refers to a protein fiber solution obtained by sequentially subjecting the protein to acid treatment, heat treatment and alkali treatment, and the pH value of the protein fiber solution is 2.0-7.0. A degradable biocomposite film provided by the present invention can effectively avoid a large amount of water loss in food to achieve a better preservation effect; the tensile strength result is not less than 9.0MPa, and the practicality is enhanced; the DPPH free radical scavenging rate is not less than 60%, and the ABTS free radical scavenging rate is not less than 70%. Therefore, the degradable biocomposite film prepared by the present application has a good application effect in terms of anti-oxidation of food.

The invention relates to the technical field of automobile engine tests, in particular to an engine hot test bench cooling liquid purging method and device and a vehicle. The method comprises the steps that after a hot test is finished, the gas-liquid mixing ratio of fluid in an engine is detected; the residual liquid amount of the cooling liquid is determined according to the fluid gas-liquid mixing ratio; and according to the residual liquid amount, generating a vibration excitation action of the electromagnetic vibration exciter to execute the vibration excitation action so as to purge the cooling liquid of the engine hot test bench, and ending purging until the residual liquid amount is smaller than a preset threshold value. Therefore, the problems that in the related technology, due to attachment of liquid to a water channel and a complex water channel structure, residual liquid is difficult to completely remove by driving cooling liquid or gravity drainage depending on compressed air, due to the fact that complex pipeline butt joint is needed in manual operation, consumed time is long, purging efficiency is low, and a large amount of compressed air is consumed in fixed purging, and the cost is low are solved. And resource waste caused by incapability of timely closing is avoided.

The application refers to Fe-Ni / polysulfone inorganic-organic hollow fiber hybrid membrane and a preparation method thereof, including a preparation process: step 1: dissolving polysulfone in an organic solvent and adding an additive, stirring to form a uniform solution; then adding 0.5% to 30% of Fe and Ni metal powder by mass ratio under stirring to obtain a spinning solution; step 2: mixing pure water and a polar solvent according to a certain ratio to form a uniform solution, obtaining an inner coagulation bath; step 3: transferring the spinning solution to a liquid supply tank after vacuum degassing, quantitatively and constantly conveying to a spinneret, at the same time, quantitatively and constantly conveying the inner coagulation bath into the spinneret, the spinning solution passing through an air gap and entering an outer coagulation bath, the hollow fiber membrane being coagulated and formed under the action of the inner / outer coagulation bath, being washed by pure water and dried to obtain the Fe-Ni / polysulfone hollow fiber membrane, which has a typical asymmetric structure, high mechanical strength and good biocompatibility, can significantly improve the hydrophilicity of the membrane and can also enhance the protein contamination resistance of the membrane.

The utility model discloses a kind of steel pipe positioning code spraying devices based on vertical truss, belong to warehouse automation technical field.The device includes vertical truss, including lifting rod and multifunctional integrated module;The multifunctional integrated module includes range finder, surface pretreatment component, blowing material pipe, code printer and code scanning inspection camera;Steel pipe positioning mechanism, including multiple groups V-shaped cylinder and end positioning roof plate.This steel pipe positioning code spraying device based on vertical truss is integrated five big function modules by vertical truss and is cooperatively controlled with steel pipe positioning machine, and process is continuously switched by the linear movement of lifting rod, and the processing period of single steel pipe is shortened, efficiency is improved, equipment floor area is reduced, and degree of automation is high;In addition, length measurement is linked based on range finder and end positioning roof plate, combined with polishing angle control and blowing material pipe reverse spray, device code spraying offset rate reduces, and scrap removal rate, code scanning inspection pass rate and identification information integrity rate are greatly improved, meet high-precision warehouse traceability demand.

The invention relates to the technical field of yellow rice wine, in particular to coix seed red yeast rice yellow rice wine with high antioxidant activity as well as a preparation method and application thereof. The monascus ruber (3.15746) is used for carrying out microbial fermentation conversion on the coix seeds, and the coix seed and monascus ruber yellow rice wine is short in production period, excellent in sensory quality, rich in lovastatin and high in antioxidant activity. The monascus yellow wine strain is enriched, the content of active ingredients and the health-care effect of the monascus yellow wine are improved, and a feasible scheme and technical parameters can be provided for industrial development.

The present invention provides a 5-ALA conjugate preparation method and use thereof. The preparation method comprises the steps of synthesizing 5-((2-aminoethyl)amino)-4-oxopentanoic acid ethyl ester and synthesizing a 5-ALA conjugate. The obtained 5-ALA conjugate is applied to medical purposes, including the preparation of anti-tumor drugs. The present invention synthesizes leonurine, which is originally used for promoting blood circulation and removing blood stasis, promoting diuresis and reducing swelling, with 5-ALA to prepare the 5-ALA conjugate. The results of preliminary pharmacological activity tests show that the tumor clearance rate of the conjugate at the cellular level is improved by more than 20% compared with the tumor clearance rate of 5-ALA and its esters.