13results about How to "Method security" patented technology

The application discloses an emergency scheduling optimization method and system for coal chemical production, and the emergency scheduling optimization method comprises the following steps: setting input data and output parameters; based on the input data and the output parameters, a general emergency scheduling optimization model is established with the target of maximizing benefits; on the basis of the general emergency scheduling optimization model, the required constraint conditions are selected according to the actual requirements of users, and a personalized visual emergency scheduling optimization model is generated based on a coal chemical process production flow; for the personalized visual emergency scheduling optimization model, a scheduling case library and an emergency plan library are constructed; when an abnormal working condition is monitored, an alarm is given and the abnormal working condition is matched with the abnormal working condition in the scheduling case library; according to the matching condition of the monitored abnormal working condition and the abnormal working condition in the scheduling case library, an emergency scheduling optimization scheme in the emergency plan library is called or emergency optimization calculation is carried out. The application can improve the processing capacity of abnormal events, and ensure smooth and safe production of enterprises when an emergency working condition occurs.

The present invention provides a method for producing radiolabeled tyrosine derivatives with good purity and stability, by a safe method suitable for industrial production of pharmaceuticals. The present invention relates to a method for producing Compound (5) and Radiolabeled Compound (6). wherein each symbol is as defined in the description.

The present invention belongs to the field of catalytic science and technology, and relates to a method for preparing isocyanate catalyzed by a photoinitiator. The present invention comprises the following steps: mixing an organic amine compound with chloroform, adding a photoinitiator 2959, placing the mixture under ultraviolet light for irradiation reaction, and removing the solvent and by-products by distillation or filtration to obtain an isocyanate. The method for preparing isocyanate provided by the present invention realizes the oxidation of an organic amine by a chloroform compound under mild conditions with the participation of a photoinitiator 2959, thereby generating an isocyanate. Compared with the traditional phosgene method, the method is safer and more environmentally friendly, and the reaction conditions are simple and easy to control, and the method has good industrial application potential.

The invention discloses a model training method and a task execution time prediction method and device, and the method specifically comprises the steps: screening similar historical model training tasks according to historical resource occupation data of historical model training tasks; and inputting the historical resource occupation data of the historical model training task and the similar historical model training task into a prediction model, so that resource occupation feature data corresponding to the historical model training task is determined, and the prediction execution duration corresponding to the historical model training task is determined. And training according to the predicted execution duration and the historical task execution duration. And the trained prediction model determines the prediction execution duration of the target model training task according to the resource occupation data of the target model training task. The method in the specification is higher in prediction efficiency and more accurate. Therefore, the utilization rate of training resources is effectively improved during subsequent resource allocation, and the training efficiency of the whole training process is improved to a great extent while resource waste and shelving are avoided.

The application discloses a kind of continuous flow photocatalytic decarboxylation preparation biological hydrocarbon method, belong to the technical field of biofuel preparation.The method includes the following steps: high fatty acid compound, hydrogen atom transfer catalyst and acridine photocatalyst are dissolved in organic solvent, and mixed solution is obtained;The mixed solution is passed into circulating continuous flow light reactor, and photocatalytic decarboxylation reaction is carried out at room temperature for 12-24 hours, and reaction liquid is obtained;Reaction liquid is separated by reduced pressure distillation, and the biological hydrocarbon compound after decarboxylation is obtained.The application uses continuous flow light reactor to strengthen mass transfer and heat transfer efficiency, solves the problem that light penetration depth is limited in traditional batch photoreactor, and reaction is not uniform;Metal-free catalytic system is used, and the use of noble metal and potential residual risk is avoided.The method has mild reaction condition, higher product yield, good atom economy, and for unsaturated high fatty acid, olefin configuration can be maintained before and after decarboxylation, and has good industrial application prospect.

The present application relates to a kind of preparation method of immunoglobulin powder and its application, the preparation method includes the following steps: collecting bovine colostrum, using cell survival technology is frozen;Frozen bovine colostrum is thawed, carries out milk fat separation, and obtains defatted bovine colostrum;Defatted bovine colostrum and composite rennet are mixed and are curdled, and then broken, obtain whey;The composite rennet includes aspartic protease, papain and bromelain;Whey is ultrafiltrated, and immunoglobulin solution is obtained;Immunoglobulin solution is vacuum freeze-dried, and the immunoglobulin powder is obtained.The preparation method provided by the present application is low temperature all the way, the activity of immunoglobulin is retained to the greatest extent, the use of composite rennet solves the problem of curd failure, and each link cooperates to improve the curd effect, realizes the preparation of high-efficiency, high-purity and high-quality immunoglobulin powder.

The invention discloses a method for improving seed germination under a salt stress condition and application thereof, and belongs to the technical field of crop production. According to the method provided by the invention, the germination ability of the seeds under the salt stress condition can be remarkably improved, the germination rate, germination potential and germination index of the watermelon seeds and the muskmelon seeds under the salt stress condition simulated by 250mM NaCl can be remarkably improved by soaking the seeds with 10 mu M methyl caffeate, and the germination of the watermelon seeds and the muskmelon seeds under the normal condition is not influenced; seedlings generated by the seeds treated by the method provided by the invention grow robustly, and compared with seedlings grown under normal conditions, obvious abnormity is not observed, so that the method provided by the invention is safe and has no toxic effect on plant growth; the provided method is simple, effective and low in cost, and can be used for improving the seed germination capacity under the salt stress condition so as to improve the utilization capacity of the saline-alkali soil and improve the crop yield and quality contribution of the saline-alkali soil.

The application discloses a kind of pre-transition metal oxide nanoparticles and its preparation method and oxygen reduction synthesis hydrogen peroxide application.The active component of the material is pre-transition metal oxide nanoparticles.Preparation method includes: with soluble pre-transition metal salt and ammonium chloride as raw material, dissolving, evaporating to dryness to obtain mixed precursor, then by calcining at different temperatures in tube furnace to obtain pre-transition metal oxide nanoparticles.The pre-transition metal oxide nanoparticles catalyst prepared can be used for oxygen reduction to prepare hydrogen peroxide, with very high hydrogen peroxide selectivity and excellent stability, greatly improving the energy utilization efficiency.The application has the characteristics of low cost, low energy consumption, simple operation, no security risks, etc., and is suitable for large-scale industrial production.

The present invention provides a method for producing radiolabeled tyrosine derivatives with good purity and stability, by a safe method suitable for industrial production of pharmaceuticals. The present invention relates to a method for producing Compound (5) and Radiolabeled Compound (6). wherein each symbol is as defined in the description.

The invention discloses a supported ozone catalyst, a preparation method thereof, a spherical ozone catalyst and application thereof, and belongs to the technical field of water treatment and environmental catalysis. The supported ozone catalyst comprises an active component, an auxiliary carbon component and a carrier, the carrier is modified gamma-Al2O3 (aluminum oxide) or modified SiO2 (silicon dioxide); the active component and the additive carbon component are dispersed on the outer surface of the carrier and the inner surface of a pore channel; the active component is an iron-cobalt composite oxide and has a spinel crystal form; the additive carbon component is prepared by calcining urea and citric acid in an inert atmosphere. The active components in the supported ozone catalyst are highly dispersed, the activation efficiency of ozone can be remarkably improved by the supported ozone catalyst under the assistance of the carbon component, and high-efficiency removal of refractory organic pollutants in wastewater is realized.

According to the europium-doped sodium lithium phosphate photoluminescence material and the preparation method thereof, the preparation raw materials and the preparation method are simple, safe and low in cost, a powder sample shows good characteristics of the photoluminescence material, a photoluminescence signal has high sensitivity and stability, and the photoluminescence signal has high sensitivity and stability by adopting the heating temperature of 650-700 DEG C and the heating time of 8-10 h. Higher photoluminescence sensitivity can be obtained; the total photoluminescence response of the synthesized europium-doped sodium lithium phosphate photoluminescence material fluctuates less than 3% within 24 h after irradiation, and the lowest detection limit is 0.68 [mu] Gy, which reaches the international advanced level. According to the invention, the problems of low sensitivity and poor stability of most photoluminescence materials at present can be solved, and a solid guarantee is provided for the accuracy of the material applied to nuclear radiation dose monitoring and traceability.

This invention provides a method for preparing an amorphous porphyrin supramolecular photocatalyst. The method involves synthesizing amorphous porphyrin supramolecular molecules at room temperature using porphyrin monomers as raw materials, and then using these amorphous porphyrin supramolecular molecules as a photocatalyst to prepare hydrogen peroxide. This invention utilizes amorphous porphyrin supramolecular molecules as a photocatalyst, which is convenient and rapid to synthesize. In the hydrogen peroxide preparation process, O2 is used as the oxygen source and visible light as the energy source, resulting in low energy consumption and high safety. The method is green and pollution-free, with mild reaction conditions, and a high yield of hydrogen peroxide per unit time. The yield of hydrogen peroxide prepared by amorphous porphyrin supramolecular molecules as a photocatalyst is approximately twice that of crystalline porphyrin supramolecular molecules. Among these, amorphous TCPP supramolecular molecules exhibit the highest yield of hydrogen peroxide, reaching up to 300 mM / g.

The application is a kind of exhibition hall ground ditch inside electromechanical comprehensive pipeline assembly type construction method, which comprises the following steps: electromechanical comprehensive pipeline module division, main pipe ditch support design, branch pipe ditch support design, factory prefabrication, factory or ditch edge assembly, segmented hoisting and segmented installation, positioning adjustment support fixing, alignment connection between alignment sections, fire hydrant box and comprehensive box installation. The method is beneficial to the rapid and reasonable construction of the exhibition hall ground ditch inside electromechanical comprehensive pipeline, the designed pipe ditch support realizes the purpose of factory prefabrication and on-site assembly type construction, and solves the technical problem that the construction of the electromechanical comprehensive pipeline in the exhibition hall ground ditch is relatively difficult due to the narrow space. In addition, the fire hydrant box in the method is newly designed in the principle of convenient use, and can be directly pulled up when needed, which is simple to operate and convenient to use. Practice proves that the method is safe and reliable, convenient to construct, and good in appearance, and achieves the expected index and target.