9 results about "Chemical transformation" patented technology

This invention discloses a deep learning-based method for VOCs pollution feature analysis and source tracing. The method includes acquiring online monitoring time-series data of VOCs and synchronous meteorological parameters of the monitoring area, constructing a multidimensional input tensor after preprocessing, building a deep neural network model containing a spatiotemporal feature extraction module and a source apportionment regression module, extracting nonlinear chemical coupling features and temporal evolution features between VOCs components using a one-dimensional convolutional neural network and a bidirectional long short-term memory network, and weighting and fusing them using meteorological parameters, and finally decoding and outputting the source component spectrum and temporal contribution rate that conform to physical constraints through the source apportionment regression module to generate a pollution feature map. This invention effectively solves the problem that traditional receptor models struggle to handle nonlinear chemical transformations and complex meteorological couplings, improves the accuracy and physical interpretability of VOCs pollution source tracing, and has online update capabilities to adapt to environmental changes.

A method (and corresponding apparatus) of analyzing the behavior of an electrochemical double layer (EDL) by replacing a classic capacitor in an astable multivibrator circuit with an electrochemical cell. By pushing the EDL into resonance, the induced charging and discharging of the double layer results in a square waveform output that has a characteristic frequency audible to the human ear. Variations in the electrolyte concentration and identity yield distinct frequencies. The method provides sensory insight into EDL rearrangement and behavior with an apparatus that is simple and robust. The apparatus allows the analysis of time-dependent EDL rearrangements occurring upon the application of a voltage. The apparatus provides insight, via an audible signal perceptible to the human ear, into the fundamental electrochemical principles governing chemical transformations.

The invention relates to a system and process for thermo-chemical transformation of mixed wet waste streams using a rotary kiln reactor equipped with a multi-annular concentric feed assembly. A central conduit introduces wet food waste mixed with plastics, biodegradable packaging, and fluorinated materials, while an intermediate annulus supplies auxiliary fuel and an outer annulus delivers oxidant gas under controlled sub-stoichiometric conditions. The kiln operates through sequential zones of reduction, partial oxidation, and complete oxidation to convert organics into hydrogen, carbon monoxide, methane, and finally carbon dioxide and water. Halogens and sulfur compounds are converted to hydrogen halides and hydrogen sulfide, which are neutralized downstream with calcium oxide to form stable salts. Heat recovery from the flue gas produces steam or hot water. The process eliminates pre-drying, allows co-processing of wet and dry wastes, and provides efficient energy recovery in a compact, scalable configuration. The invention eliminates the need for pre-drying or segregation, enabling simultaneous treatment of heterogeneous feedstocks.

Method for manufacturing a printed circuit board with a metallic conductor structure (109, 119) comprising the steps a. Provision of a base substrate (101) formed as a film or plate with a first substrate side (101a) and a second substrate side, which consists at least partially of an electrically non-conductive organic polymer material and in which the first substrate side (101a) is covered with a cover metal layer (102), and b. partial removal of the top metal layer (102), where the top metal layer is removed in sections (102) c. a mask layer (103) is applied to the top metal layer (102), d. the mask layer (103) is removed in sections, so that the first substrate side (101a) is divided into at least one first sub-area (104) in which the first substrate side (101a) is covered only with the cover metal layer (102), and into at least one second sub-area (105) in which the first substrate side (101a) is covered with the cover metal layer (102) and by the mask layer (103), and e. the cover metal layer (102) in which at least one first sub-area (104) is removed, characterized by the fact that f. the mask layer (103) in the first sub-area (104) is removed by an etching treatment using an etching solution and prior to the etching treatment to remove the mask layer (103) in the first sub-area (104) a phase transformation or a chemical transformation is effected in the mask layer (103), wherein the mask layer (103) consists of an inorganic semiconductor or a compound of an inorganic semiconductor or of a polymer material which can assume at least a partially crystalline state and an amorphous state.

The present application relates to coal chemical process control technical field, and disclose a kind of based on data-driven coal chemical transformation process control method.The temperature, pressure sensor is calibrated on line by forming independent acquisition channel, constructs whole field temperature and pressure state vector, establishes partition index and threshold according to data distribution, and real-time depicts spatial difference;Then use sample to generate dimensionless error model, introduce comprehensive load constraint and construct dual lagrangian function, unify safety constraint and optimization target, form temperature and pressure pair scheduling index, obtain executable control increment after conversion, and be allocated to each measuring point according to partition proportion difference, closed-loop operation and dual factor dynamic switching in fixed cycle, realize whole process adaptive, safe and reliable collaborative control.

This application relates to the field of biomass material processing technology and discloses a method for preparing bio-based materials based on rose fibers. The method includes: mixing rose biomass powder, a reactive modifier system composed of choline chloride, anhydrous citric acid, and zinc acetate dihydrate, and deionized water to obtain a premix; subjecting the premix to a first-stage low-temperature thermal induction at 70-95°C to promote the chemical transformation of the epidermal stratum corneum; subsequently raising the temperature to 110-150°C for a second-stage high-temperature in-situ reaction to construct a metal coordination crosslinking network; and finally obtaining the product through cooling, pulverization, and hot pressing. This invention, through a graded temperature control process, utilizes in-situ generated fatty acid metal soaps for internal lubrication and metal ion coordination bonds for reinforcement, solving the problems of difficult processing, low strength, and poor water resistance of rose waste. The resulting material exhibits excellent thermoplastic processing properties, mechanical strength, and hydrophobicity.

This invention discloses a biological agent for treating fresh tobacco leaves and a method for treating fresh tobacco leaves. The biological agent for treating fresh tobacco leaves is prepared by the following method: S1. A single colony of *Pseudomonas paraxanthum* ZY-03 (CGMCC NO.24422) is selected to prepare a seed culture; S2. Field-discarded fresh tobacco leaves are washed, ground at low temperature, and then the fresh tobacco pulp is ultrasonically crushed and filtered at low temperature. The filtrate is filtered through a membrane to obtain fresh tobacco pulp; S3. The seed culture is added to the fresh tobacco pulp, and fermentation is carried out; S4. The fermented pulp is ultrasonically crushed at low temperature, centrifuged, and the supernatant is collected, which is the biological agent for treating fresh tobacco leaves. When the biological agent of this application is sprayed onto fresh tobacco leaves and subjected to initial curing, the aroma components generated from the chemical transformation of the tobacco leaves, and the Maillard reaction that occurs under high-temperature curing conditions, further improve the quality of the fresh tobacco leaves.

Provided are: a calculation method whereby a chemical change pathway can be analyzed in a relatively short amount of time even for a gas having a more complex molecular structure than hydrogen, oxygen, and methane and for which various elementary reactions are expected to occur; and an analysis system that uses the analysis method. The method for analyzing a chemical change pathway of a gas according to the present invention is characterized by comprising: a step for inputting information about a gas system; a step for calculating the frequency of collisions between molecules constituting the gas and determining a first time slot, which is the frequency at which a change in the number of molecules is calculated; a step for executing a molecular dynamics calculation and calculating the number of molecules on the basis of atomic coordinates data extracted for each of the first time slots; a step for calculating the amount of change in the number of molecules for each of the first time slots by using the difference in the number of molecules in each of the first time slots; a step for selecting the time slot in which the absolute value of the amount of change in the number of molecules is the largest; and a step for analyzing the chemical change pathway by extracting atomic coordinates data on the basis of a second time slot for the time slot in which the absolute value of the amount of change in the number of molecules is the largest, wherein the first time slot is larger than the second time slot.

The invention discloses a modular genome transformation system of yarrowia lipolytica, a transformation method and application. Belongs to the technical field of gene engineering. The system provided by the invention adopts a three-level modular design: an L0-level element is a standardized biological component library and comprises a promoter, a coding region, a terminator and other single functional units subjected to sequence domestication; the L0 component is combined into a complete functional module (such as a gene expression cassette or a selection marker) by the L1-level element through GoldenGate assembly; the L1-level element is a homologous recombinant vector targeting specific genome sites (such as KU80 and 26s rDNA), the L1 module is connected in series to a pUC57 skeleton with a homologous arm through a SapI enzyme, the method realizes accurate integration of multiple sites and multiple genes through a CRISPR-Cas9 auxiliary conversion and chemical conversion method, and solves the bottleneck problems of poor site adaptability, difficult iteration, high cost and the like in the prior art.