15 results about "Growth kinetic" patented technology

The application discloses an Aeromonas media strain capable of degrading PAEs and an application thereof, and belongs to the technical field of microorganisms. The strain is Aeromonas media HJ02, and the preservation number is GDMCC NO: 66828. The strain has obvious advantages in environmental adaptability and PAEs pollutant degradation activity, can efficiently degrade various PAEs and intermediate metabolites, and maintains good growth kinetic characteristics in a 0-120 h culture period. When the initial concentration of diisooctyl phthalate (DEHP) is 300 mg / L, the strain can significantly reduce the residual content of DEHP in the culture system after culture, and the 24 h degradation rate reaches 91.73 %. The application has the advantages of simple operation, safety and economy, provides efficient and stable microbial resources for PAEs pollution remediation, and has important practical value.

The invention discloses an intelligent distribution scheduling method and device for egg products and a medium, and relates to the technical field of intelligent scheduling, and the method comprises the steps: collecting biological characteristic parameters of target egg products in real time, carrying out the feature encryption processing through an edge calculation node to form private data packets, receiving the private data packets of all suppliers through a message queue service, and sending the private data packets to a server; calling a homomorphic encryption library to execute weighted average aggregation on the encrypted feature vectors; and loading real-time road condition data, compartment temperature and humidity distribution and a vibration spectrum in a digital twin sandbox based on a global egg rheology knowledge graph and a microbial growth kinetic model, and coupling to solve a product risk value of a protein shear stress accumulation equation and a flora growth equation. By constructing a global egg product rheology knowledge graph and a microbial growth kinetic model, the time-space coupling characteristics of biomechanical characteristics and microbial activity of egg products in transportation are accurately captured, and the quality risk quantification precision and the transportation strategy reliability are improved.

The invention discloses a preparation method of silicon dioxide-gold core-shell nanoparticles, and belongs to the field of nano material preparation. The method comprises the following steps: preparing aminated silicon dioxide nanoparticles; preparing small gold nanocrystal seeds and adsorbing the small gold nanocrystal seeds on the surface of silicon dioxide; ascorbic acid or a salt thereof is used as a weak reducing agent, a chloroauric acid solution is slowly added, uniform growth of a gold shell is induced on the surface of a gold seed, and finally a complete core-shell structure is formed. According to the method, surface modification and adsorption are optimized, a weak reduction growth system is adopted, and growth kinetics is accurately controlled, so that the problems of uneven gold shell coating, complex process and poor reproducibility in a traditional method are effectively solved. The nanoparticles prepared by the method have the advantages of complete and smooth gold shell, accurate and controllable thickness (5-50nm), adjustable plasma resonance absorption, good monodispersity and the like, and have important application value in the fields of biomedicine and photoelectricity.

The invention relates to the technical field of microbe counting, in particular to a digital clone accurate counting recognition system and method. The method comprises the following steps: injecting a bacterial liquid to be detected into a preset microcavity array, and constructing a plurality of partition units; placing the micro-chamber array in a preset constant-temperature culture environment for parallel culture, and acquiring a chamber image set of each partition unit; performing image segmentation on the cavity image set of each partition unit, and extracting an image contour corresponding to each partition unit; identifying a positive chamber based on the image contour to determine a predicted loading number of the monoclonal growth chamber; and evaluating the relative growth capability of each positive chamber according to the predicted loading number and the growth kinetic parameter set of each monoclonal growth chamber, and identifying a target dominant clone type corresponding to each positive chamber. The screening efficiency and accuracy of research and development of probiotics and other microorganisms are improved, and the stability, functionality and safety of microorganism products are remarkably improved.

This invention discloses a method and apparatus for preparing dihydroporphyrin supramolecular assemblies, belonging to the field of functional nanomaterials technology. By designing a Y+S composite microfluidic chip, this invention utilizes Dean's vortex induced by an S-shaped flow channel to precisely control the nucleation and growth kinetics of Ce6 molecules, achieving the directional preparation of nanospherical Ce6 supramolecular assemblies. Simultaneously, it ensures that the assemblies have a narrow particle size distribution (PDI < 0.1), completely solving the problems of large morphological heterogeneity and poor controllability in traditional methods, and providing technical support for the standardized preparation of Ce6-based nanodelivery systems.

The invention discloses a PTC (Positive Temperature Coefficient) ceramic material with a uniform fine grain structure as well as a preparation method and application thereof, and belongs to the technical field of PTC ceramic materials. According to the invention, growth kinetic energy of crystal grains is accurately supplied, so that the growth continuity is guaranteed; the growth consistency is improved by regulating and controlling the synchronous growth of crystal grains in the whole region; by controlling the sintering temperature and the sintering time, abnormal growth of crystal grains is inhibited, and finally, the PTC ceramic material forms a fine grain structure with uniform microcosmic grain size and regular grain boundary distribution, so that the basic requirement of the PTC ceramic material on low resistivity can be met, the unit thickness voltage resistance and high energy impact resistance of the material can be remarkably improved, and the service life of the PTC ceramic material is prolonged. And the problems of layering failure, edge sparking flashover, breakdown and the like which are easy to occur in the traditional material are effectively avoided.

This disclosure provides methods and genetically engineered strains of Vibrio natriegens, specifically developed for the bio¬ based production of succinate. Capitalizing on the rapid growth kinetics and highly efficient carbon metabolism of V. natriegens, this disclosure provides an environmentally friendly, scalable, and cost-effective alternative to traditional petrochemical methods for succinate production. The engineered cells comprise diverse genetic modifications to enhance flux to reductive tricarboxylic acid pathway and prevents diversion from said flux, wherein the genes affected are: pck, mdh, IldH, dldH, alD, pfIB, ptsl, glk, vsGLT, aceEF, IpdA, exuT and PN96 RS22390..

The application provides a method for continuous crystallization of large-particle D-psicose crystal, based on the growth kinetics characteristics of D-psicose crystal, through the mode of "single stimulation nucleation + constant temperature crystal growth + circulating seed reservation + mother liquor recovery", the synergism of continuous production and accurate regulation of crystal habit is realized, and high-purity, large-particle and regular rod-shaped D-psicose crystal is prepared, which is a continuous preparation process for realizing large-particle, high-purity and easy-to-filter D-psicose crystal through "circulating seed reservation and crystal growth + mother liquor recovery cycle". Meanwhile, the process is simple, the degree of automation is high, the product quality is stable, there is no batch difference, the raw material utilization rate is high, there is no organic solvent addition in the whole process, the energy consumption is low, the cost is controllable, and the process is suitable for industrialized large-scale continuous production.

The application discloses a method for in-situ dynamic characterization of SnO2 nanocrystal growth process, comprising the following steps: collecting in-situ data of the sample by using a transmission electron microscope; changing the external liquid phase environment of the sample, and recording in-situ data of the sample under different influencing factors; dividing the growth stage of the SnO2 nanocrystal according to the in-situ data; measuring and calculating size, area and reaction rate data in the growth process of the SnO2; fitting the relationship between the size and time to obtain the LSW growth kinetics model to which the SnO2 nanocrystal belongs; calculating the surface energy of the exposed high-energy surface in the growth process of the SnO2 to obtain the relationship between the surface energy and the preferred growth direction of the nanocrystal; measuring and calculating the rotation speed and translation speed between the SnO2 nanocrystals, and analyzing the driving force which plays a leading role. The application clarifies the growth mechanism by constructing a growth kinetics model, and provides a reliable theoretical basis for efficient regulation of the microstructure of SnO2.

The application belongs to the technical field of electromagnetic functional materials and conductive polymers, and particularly relates to a porous three-dimensional spherical PEDOT wave absorber as well as a preparation method and application thereof. The wave absorber is prepared through chemical oxidation polymerization reaction of the following raw materials: 3,4-ethylenedioxythiophene monomer, iron-based oxidizing agent and dopant. The application realizes, for the first time, systematic regulation of the amount of a single dopant on the morphology of PEDOT, and obtains an excellent wave absorption structure. Iron perchlorate has dual functions of oxidizing agent and dopant, can provide Fe 3+ ⁺ and ClO₄⁻ double-doping effects, and iron ions and their hydrolysis products can affect nucleation and growth kinetics in the polymerization process, thereby regulating the micro-morphology of PEDOT. The application realizes controllable preparation of PEDOT with different morphologies in one step by accurately changing the addition amount of iron perchlorate and the reaction temperature, significantly improves the conductivity of PEDOT, and further enhances the conductivity loss. The process is simple, stable, low in cost, green and environmentally friendly.

This invention provides a biotechnology-based method for lake water purification and ecological restoration, comprising the following steps: S1. Collection and analysis of basic lake water data; S2. Screening and cultivation of dominant microorganisms; S3. Formulation of ecological restoration plans; S4. Application of microbial agents and planting of aquatic plants; S5. Monitoring of the water restoration process; S6. Evaluation of restoration effects and adjustment of the plan. This invention significantly improves the degradation efficiency and environmental adaptability of target pollutants, providing highly efficient functional microbial agents for precise remediation. It utilizes a dynamic programming algorithm to construct an optimized microbial culture model, combining the growth kinetics of bacterial strains to precisely control nutrient addition strategies and culture cycles. While ensuring the concentration and activity of the microbial agents, it effectively reduces resource consumption and time costs in the cultivation process, improving the economic efficiency and reliability of microbial agent production, laying the foundation for large-scale engineering applications.

This invention relates to the field of microbial counting technology, and more particularly to a digital clone accurate counting and identification system and method. The method includes the following steps: injecting the bacterial solution to be detected into a preset microchamber array and constructing several partitioned units; placing the microchamber array in a preset constant-temperature incubation environment for parallel cultivation and acquiring chamber image sets for each partitioned unit; segmenting the chamber image sets for each partitioned unit and extracting the corresponding image contours; identifying positive chambers based on the image contours to determine the predicted loading number of single-clone growth chambers; evaluating the relative growth capacity of each positive chamber based on the predicted loading number and the growth kinetic parameter set of each single-clone growth chamber, and identifying the target dominant clone type corresponding to each positive chamber. This application not only improves the screening efficiency and accuracy of probiotics and other microbial research and development, but also significantly enhances the stability, functionality, and safety of microbial products.

The invention relates to a series of mulberry-shaped grade pore ZSM-5 molecular sieve single crystal derivatives and a synthesis method and application thereof. The preparation method comprises the following steps: under the conditions of no mesoporous template agent and no etching treatment, firstly, by adjusting zeolite nucleation and growth kinetics, constructing a mulberry-shaped hierarchical pore ZSM-5 molecular sieve single crystal; then carrying out ammonium exchange treatment to prepare mulberry-shaped H-type grade pore ZSM-5 molecular sieve single crystals; and then loading rare earth elements into the mixture by adopting an impregnation method to obtain the mulberry-shaped rare earth loaded H-type grade pore ZSM-5 molecular sieve single crystal. According to the preparation method, the dual gain effects of enhancing diffusion of a grade pore structure and improving acidity of the rare earth metal La are realized by utilizing the acidity modulation effect of the rare earth element La and the synergistic modification effect of carbon deposit species, so that on one hand, the problem of micropore blockage caused by traditional molecular sieve impregnation is solved; on the other hand, the MTO catalytic life and the propylene selectivity of the bifunctional catalyst are remarkably improved by utilizing low-load rare earth elements.

The application belongs to the technical field of nanometer material preparation, and particularly relates to a controlled growth method of high aspect ratio single-wall carbon nanotubes. The method aims to solve the problems of limited aspect ratio caused by easy catalyst agglomeration and difficult growth kinetics regulation in the prior art. The method comprises the following steps: preparing a supported nanometer catalyst precursor to anchor metal ions; in-situ reduction to regulate metal particle size and distribution; establishing a multi-field coupling reaction environment containing a carbon source and an oxygen-containing additive; implementing programmed stepwise temperature control to guide carbon atom nucleation and steady growth; and using an online monitoring device to obtain the growth state in real time and realize precise termination. Through accurate control of catalyst activity and carbon-oxygen balance of the reaction system, the application can effectively inhibit the generation of multi-wall impurities, realize the continuous extension of single-wall carbon nanotube length, and obtain a product with ultra-high aspect ratio and high purity, thereby significantly improving the structural consistency and performance transmission efficiency of the material.

The invention discloses a preparation method for controlling precise growth of CoNi-ABDC-MI, and provides a method for realizing precise and controllable in-situ synthesis of an MOF-on-MOF graded nano material by cooperatively regulating and controlling first-order MOF surface energy through double metals in order to solve the problem of insufficient precise control of growth kinetics and active site synergistic integration in electrocatalyst precursor synthesis. According to the method, the synergistic substitution effect of Ni on Co-ABDC crystal lattices is ingeniously utilized, and the surface energy of the first-order MOF is regulated and controlled to be an optimal thermodynamic metastable state window. According to the metastable state, the growth mode of the second-order MOF is effectively converted from thermodynamic inhibition / out-of-control to dynamic controlled heteroepitaxial growth, so that interface heterogeneous integration of the CoNi-ABDC-MI composite material with a clear interface and stable morphology is realized.