70 results about "Chemical kinetics" patented technology

The invention relates to a method for evaluating the porosity of mud shale at an objective layer segment, and belongs to the technical field of exploration and development of petroleum, geology and mining industry. The method can be used for evaluating the total porosity, the organic porosity and the inorganic porosity of the mud shale at the objective layer segment in a shale gas well. The method comprises the following steps: (1) determining the mass of various ingredients in a mud shale sample skeleton in unit mass at each depth point of the objective layer segment and the density of each dried sample block body and calculating the total porosity of the mud shale in all the depth points via the combination of the actual density of various minerals; (2) calculating the organic porosity (Phi organic') formed by the hydrocarbon generation of the mud shale at the objective layer segment by utilizing chemical kinetics; (3) seeking a solution of the organic porosity (Phi organic) according to scanning electron micrographs of multiple argon ion polishing samples in the same depth point; (4) calibrating the organic porosity (Phi organic') calculated according to the chemical kinetics by utilizing the organic porosity (Phi organic); and (5) seeking a solution of the inorganic porosity by utilizing a difference value of the total porosity and the calibrated organic porosity.

The invention discloses a monte carlo based method for simulating a carbon/ carbon composite material texture. The method comprises the steps of performing chemical kinetics modeling for pyrolytic carbon matrix deposition; performing monte carlo modeling for pyrolytic carbon deposition process; compiling C++ program of simulated pyrolytic carbon deposition process; setting the program into 20000 MCS, wherein 1MCS=50*50 cycles; the simulation results are drawn into a map. According to the method, the characteristic of monte carlo simulation randomness is utilized successfully; the deposition of pyrolytic carbon on the matrix surface during CVI process is simulated, so as to really reflect the influence of the CVI process parameters to the whole reaction process; the method is of good technical guide significance for industrial production.

The invention relates to preparation and application of a sodium alginate-based grain size variable door controlled antitumor drug delivery system and can solve the preparation problem of antitumor drugs effectively. According to the technical scheme, the preparation comprises the following steps: grafting a peptide ligand to a sodium alginate framework by means of a carbodiimide chemical method;uniformly mixing the framework with adriamycin amycin; dropwise adding a FeCl3 crosslinking agent which is covalently crosslinked with -COOH to form a hydrogel; entrapping adriamycin amycin in a spatial lattice structure of the nano gel to obtain the system. The preparation method is simple and energy-saving and environmentally friendly, and the prepared antitumor drug delivery system has a tumortrigger type phase conversion ability, so that responsive drug release of a tumor microenvironment can be achieved. Particle size conversion is achieved by tumor microenvironment stimulation, so thattumor deep penetration is achieved; endogenous H2O2--OH conversion is activated to achieve tumor chemical kinetics-chemotherapy combined treatment without O2, thereby providing a novel concept to improve the tumor treatment efficiency of a chemotherapeutic.

The invention relates to a preparation method and application of a copper sulfide/hyperbranched macromolecular nano bionic enzyme. An intelligent nano enzyme system is constructed to realize pH-controllable chemical kinetics enhanced photo-thermal anti-tumor therapy so as to solve the problem of high recurrence of lethal cancer. According to the nano bionic enzyme system, a copper sulfide nano particle core is used as a photo-thermal agent and a Fenton-like catalyst, and a hyperbranched macromolecular polymer is used as a template to wrap copper sulfide and graft glucose oxidase. Research results prove that the prepared nano bionic enzyme system has excellent chemical kinetics and photo-thermal therapy performance in a slightly acidic environment of tumors, can efficiently inhibit growth and recurrence of the tumors, and provides a new strategy for clinical treatment of high-recurrence middle and advanced stage cancers.

The invention provides a nano-particle for mediating cascade reaction, and a preparation method thereof. The nano-particle provided by the invention comprises a core particle and a wrapping layer wrapping the core particle; the core comprises a metal-organic framework MIL-100 and dihydroporphin e6 loaded on the metal-organic framework MIL-100; and the wrapping layer is a hyaluronic acid layer. Bymeans of the nano-particle in the invention, cascade reaction at a tumour site can be realized; synergistic combination therapy of chemical kinetics and optical dynamics is realized; and thus, the better therapeutic effect of tumour is achieved.

The invention relates to a evaluation method of an absolution oil accumulated transformation rate. The evaluation method of the absolute oil accumulated transformation rate comprises the following steps: 1) implementing thermal simulation experiments, including a rock pyrolysis experiment and a pyrolysis gas chromatography experiment of an open system, as well as a gold-tube experiment of a closed system, so as to acquire accumulated transformation rates when kerogen is disintegrated into a liquid state hydrocarbon and a gas state hydrocarbon at different temperatures, as well as accumulated transformation rates when a crude oil is disintegrated into a gas at different temperatures; 2) establishing chemical kinetics models of disintegrating kerogen into the liquid state hydrocarbon, disintegrating kerogen into a colloid, disintegrating kerogen into asphaltene, as well as disintegrating the crude oil into the gas; acquiring, through optimized solutions, chemical kinetics parameters of disintegrating kerogen into the liquid state hydrocarbon and disintegrating the crude oil into the gas; 3) determining pyrolysis gas output rates of the colloid and the asphaltene; 4) determining a final proportion of disintegrating kerogen into the colloid and the asphaltene; 5) calculating an accumulated transformation rate of forming an oil by kerogen under geological conditions; and 6) calculating an accumulated transformation rate of the absolute oil under the geological conditions. The evaluation method of the absolute oil accumulated transformation rate can be widely applied to evaluating the accumulated transformation rate of the absolute oil in the evaluation process of the source rock petroleum generation amount.

The invention discloses an open system chemical kinetics high-temperature and high-pressure experimental device which comprises a cold-seal type tubular high-pressure kettle, a temperature control furnace, a pressurization system, an online feed device, an online sampling device, a multi-parameter detector and a computer, wherein the cold-seal type tubular high-pressure kettle is buried in the temperature control furnace and comprises a tubular kettle body with a closed lower end and a kettle cover in threaded connection with the tubular kettle body; an output port of the pressurization systemis communicated with the cold-seal type tubular high-pressure kettle; the online feed device and the online sampling device are communicated with the top and bottom of the cold-seal type tubular high-pressure kettle; a probe of the multi-parameter detector extends into a sampling bottle of the online sampling device to perform online detection; the computer is in signal connection with the multi-parameter detector; a thermocouple of the cold-seal type tubular high-pressure kettle and the temperature control furnace are connected with a temperature controller. According to the open system chemical kinetics high-temperature and high-pressure experimental device disclosed by the invention, the high-pressure kettle is connected with online feed and discharge devices and the multi-parameter detector; a sample in the kettle is in an open flowing state during an experiment, thus, dynamic processes during element migration, hydrolysis and water-rock interaction can be detected.

The invention provides a preparation method of composite nanoparticles for increasing the active oxygen content in tumor cells, which comprises the following steps: by synthesizing nanoparticles with core-shell structures, the nanoparticles firstly consume glutathione in a tumor microenvironment so as to avoid the removal of active oxygen; then, a photodynamic process and a further triggered chemical dynamic process are carried out under the irradiation of 980nm laser, so that the amount of active oxygen is accumulated, and an enhanced synergistic treatment effect is generated; according to the invention, the reversible reaction of a tumor microenvironment consumes glutathione and triggers continuous generation of hydroxyl radicals, so that the content of active oxygen is remarkably increased; under the irradiation of 980nm laser, a photodynamic process can be generated to generate singlet oxygen to damage tumor cells; and the effect of obviously increasing the content of active oxygen in tumor cells is achieved by adopting a photodynamic and chemical kinetics synergistic treatment mode, and the death probability of the tumor cells is further improved.

The invention discloses a numerical simulation method for liquid rocket after-combustion reaction calculation, and the method comprises the steps: taking a liquid carrier rocket launching platform asa research object, and analyzing the impact on a tail flame impact flow field from an after-combustion reaction; in the numerical simulation, adopting a three-dimensional compressible Reynolds averageN-S equation and a realizable k-epsilon turbulence model to obtain a gas jet flow field; simulating a chemical reaction process by adopting a finite-rate chemical kinetic model, establishing a multi-component tail flame after-combustion model and comparing the multi-component tail flame after-combustion model with literature data, and verifying the effectiveness and correctness of the algorithm.The numerical simulation method is high in precision, low in calculation cost and suitable for engineering practice, and is determined after a large number of numerical simulation tests are carried out and numerical results are compared with test results.

The invention relates to a control method for urea injection of an engine postprocessor. The control method comprises the following steps that gas concentration data in a postprocessor sample rack test and temperature data of an engine rack are collected respectively; the collected temperature data are input into an SCR temperature model to calculate temperature field distribution of different axial positions in the SCR postprocessor; the collected gas concentration data and temperature field distribution are input into an SCR chemical dynamics model to be calculated and input into a gas concentration equation together with the quantity, collected by the engine rack, of each kind of gas component flowing into a catalytic device, and calculated SCR carrier ammonia storage is obtained; and then the calculated SCR carrier ammonia storage and an SCR carrier ammonia storage preset value are judged so as to realize urea injection control. According to the method, the ammonia storage amount in an SCR carrier is calculated forward, and closed-loop control over urea injection is realized, so that the conversion rate of tail gas NOx reaches more than 96%, and emission finally meets emissionregulation requirements of national VI standards or above.

The invention relates to a preparation method of a medicinal reagent for treating colon cancer. The preparation method comprises the following steps: dissolving bovine serum albumin in deionized waterto prepare a uniform bovine serum albumin solution; adding an aqueous solution of a soluble trivalent iron salt into the bovine serum albumin solution under a stirring condition to obtain a bovine serum albumin-Fe solution; adding an ellagic acid solution into the bovine serum albumin-Fe solution under a stirring condition to prepare an ellagic acid-Fe-bovine serum albumin solution; and ultrafiltering and centrifuging the ellagic acid-Fe-bovine serum albumin (BSA) solution for purification to obtain an ellagic acid-Fe-BSA nanoparticle solution which is the medicinal reagent for treating coloncancer. Compared with the prior art, the medicinal reagent provided by the invention has a good treatment effect on colon cancer and can be used for enhancing chemical kinetics-photothermal therapy-chemotherapy combined treatment.

The invention relates to a copper and manganese-doped Prussian blue-like-molybdenum disulfide nano composite material as well as preparation and application thereof. The preparation process of the nano composite material comprises the following steps: (1) synthesizing a copper and manganese-doped Prussian blue-like CMPB nano cube through a coprecipitation method; (2) taking the CMPB nanocube, ammonium tetrathiomolybdate and polyethylene glycol as raw materials, and performing hydrothermal reaction to obtain a target product. The copper and manganese doped Prussian blue-like-molybdenum disulfide nano composite material prepared by the invention has a porous annular structure, provides a space for effectively delivering doxorubicin (DOX) to tumor tissues, can integrate enhanced photo-thermal and chemical kinetics treatment means, can achieve photo-thermal/chemical kinetics treatment/chemotherapy synergistic treatment of cancers, and can be used as a contrast agent of MR; in addition, the composite material can be degraded in a dependent manner on H2O2, and the long-term toxicity of the composite material on organisms can be reduced.

The invention discloses a hydrogen production method based on solid oxide electrolyzed water, and relates to the field of hydrogen production based on electrolyzed water. The hydrogen production method based on solid oxide electrolyzed water comprises the following steps: S1, constructing a flat plate type solid oxide electrolytic tank; S2, preparing distilled water, heating the distilled water to vaporize the distilled water to form high-temperature water vapor flowing in one direction, and inputting the high-temperature water vapor into the solid oxide electrolytic tank; S3, applying a direct-current voltage to the electrodes on the two sides in the solid oxide electrolytic tank; S4, enabling the electrolytic tank to be subjected to heat preservation, and keeping the temperature of the electrolytic tank at 700-900 DEG C; S5, collecting the hydrogen separated out of the solid oxide electrolytic tank, carrying out cooling and carrying out compressing. The solid oxide electrolytic tank based on the high-temperature state is adopted for water electrolysis hydrogen production, the water electrolysis efficiency is higher, and for high-temperature electrolysis, the water electrolysis efficiency is greatly improved due to the fact that the thermodynamic and chemical kinetic characteristics of the electrolytic reaction are improved.

A rapid compression machine (RCM) employs an electrical drive to move a piston disposed within a chamber housing. The electrical drive converts electrical power into linear motion of the piston, for example, to compress contents in a reaction chamber defined by the chamber housing and the piston. The temperature and pressure changes induced by the compression can cause reaction of contents within the chamber, for example, autoignition of the contents. The RCM can thus be used to study chemical kinetics. In some embodiments, the electrical drive can also rapidly move the piston in reverse to expand a volume of the reaction chamber, for example, to quench the compression-induced reaction therein. In such embodiments, the RCM may be considered a rapid compression-expansion machine (RCEM) and can be used for speciation studies.

Disclosed is a chemical kinetics testing method by adopting a dynamic admittance spectroscopy instrument, wherein the dynamic admittance spectroscopy instrument includes the following parts: a signal generator (1), a chemical reactor and signal generator interface (2), a data acquisition circuit and measurement circuit (3), an acquisition-measurement circuit and computer interface (4), a data processing and display device (5). The signal generator (1) generates excitation signals in real time, and the excitation signals enter a chemical reactor (6) through the chemical reactor and signal generator interface (2); the data acquisition circuit and measurement circuit (3) performs real-time measurement and acquisition on signals outputted in two channels and the acquisition-measurement circuit and computer interface (4) transmits the processing result into a computer; and finally the data processing and display device (5) performs data processing and display. Due to very small amplitude of the excitation signals, voltage output needs to be amplified for performing data acquisition and processing in order to detect the weak signals, and the processing result is transmitted to the computer through a communication interface for subsequent processing, and the measurement result is displayed and stored at last.

The invention discloses a numerical judgment method for a flameless combustion state in a non-premixed combustion process, which comprises the following steps of 1, carrying out chemical kinetic calculation on non-premixed one-dimensional flame to obtain the theoretical temperature of the flame under an ideal condition and the change of a heat release rate under different combustion states; 2, extracting the spatial distribution characteristics of the one-dimensional flame heat release rate under the ideal condition and the flameless combustion state, and describing the characteristics by using a mathematical language to enable the characteristics to become the criterion of the flameless combustion state under the complex combustion condition; 3, collecting a CFD two-dimensional or three-dimensional non-premixed combustion process simulation result of a combustion state to be judged, and extracting heat release rate spatial distribution data in the CFD two-dimensional or three-dimensional non-premixed combustion process simulation result; 4, based on the CFD simulation result heat release rate data extracted in the step 3, carrying out heat release rate characteristic calculation required by the criterion in the step 2; and 5, judging the heat release rate characteristics calculated in the step 4 by utilizing the flameless combustion state criterion in the step 2 so as to judgethe combustion state of the CFD simulation result.

The invention relates to the technical field of biomedical materials, in particular to a preparation method and application of an ROS response marine fucoidin nano-carrier based on a Fenton reaction and an AIE effect. The ROS response marine fucoidin nano-carrier based on the Fenton reaction and the AIE effect is constructed, the fucoidin nano-carrier is composed of at least two amphiphilic block copolymers, the amphiphilic block copolymers take fucoidin as a main chain, the side chain contains at least one of thioketal or a photosensitizer, the side chain of at least one amphiphilic block copolymer is grafted with a Fenton reaction catalyst, the thioketal has an ROS response characteristic, the photosensitizer has a photodynamic function, and the Fenton reaction catalyst can further promote the ROS corresponding mechanism through a Fenton reaction, so that the fucoidan nano-carrier can make anti-tumor drugs realize the function of combined treatment of tumor by chemical kinetics, photodynamics and chemotherapeutic drugs at the same time, and play the function of the anti-tumor drugs.

The invention provides Fe/Mn double-metal-doped dual-mode imaging MOFs, a preparation method and application thereof.The Fe/Mn double-metal-doped dual-mode imaging MOFs are prepared by the steps that rare earth nanocrystals serve as cores, the cores are coated with a layer of rare earth nanocrystal shells through an epitaxial growth method, then the surfaces of the rare earth nanocrystals are subjected to PVP modification, double-metal-doped ZIF-8 grows on the surfaces of the rare earth nanocrystals, and the Fe/Mn double-metal-doped dual-mode imaging MOFs are obtained. The nanocrystal with the structure has obviously enhanced up-down conversion luminescence performance, and can realize in-vivo up-conversion fluorescence imaging and near-infrared two-region imaging. After laser irradiation, a semiconductor can be excited to generate active oxygen and oxygen, Fe < 2 + > and Mn < 2 + > doped in the outermost shell layer can generate a Fenton-like effect with hydrogen peroxide in a tumor in a free state to realize chemical kinetic treatment, and glutathione in the tumor can also be consumed. Therefore, the nano composite material not only can realize in-vivo dual-mode optical imaging, but also has a photodynamic and chemical kinetics synergistic treatment effect on tumor cells, and has better application in the aspects of cancer diagnosis and treatment.

The invention relates to a targeted drug of a chemical kinetics enhanced photothermal therapy system for treating malignant tumors, and a preparation method and application of the targeted drug. According to the invention, a non-metal hybrid doped graphene nanometer bionic enzyme system is designed on the basis of challenges that the malignant tumors are difficult to remove thoroughly, easy to relapse and transfer and the like, is hopeful to efficiently remove tumors and inhibit reoccurrence and metastasis of residual tumors through a CDT enhanced PTT effect, and provides a new solution idea is for clinical treatment of serious malignant tumors.

A VOCs source analysis method based on a chemical kinetic receptor model fusion technology relates to the field of atmospheric volatile organic compounds, and comprises the following steps: (1) preprocessing and inputting online data; (2) calculating chemical kinetic parameters; (3) calculating the concentrations of initial VOCs and consumed VOCs discharged by the source; (4) performing PMF/ME2 model parameter setting, including basic setting and source spectrum characteristic constraint; (5) performing PTTPMF model parameter setting, including basic setting and actual measurement source component spectrum setting; and (6) calculating source contribution: using a PMF/ME2 model and a PTTPMF model, and mutually verifying results of the two models. The chemical kinetic receptor model fusion source analysis technology provided by the invention can realize automation of VOCs initial concentration conversion in the calculation process of the factor analysis model, can also make up for the situation of VOCs source component spectrum loss, improves the accuracy of model calculation, realizes automatic calculation of the factor analysis model, and has very good popularization and application prospects.