Composite corrosion inhibitor containg mercapto-heterocyclic compound and alkali metal iodide

A built-up corrosion inhibitor for Cu or Cu-alloy in acidic medium contains the heterocycle compound containing hydrosulfuryl radical, which is chosen from 2-hydrosulfuryl benzimidazole, 2-hydrosulfuryl benzoxazole, 1-phenyl-5-hydrosulfuryl-tetraazazole and 2-hydrosulfuryl benzothiazole, and alkali-metal iodide in mole ratio of (1-16):(1-16).

Application of 2-acetylamino gentisic acid to preparing insulin sensitizer

The invention discloses application of a 2-acetylamino gentisic acid compound with protein tyrosine phosphatase 1B inhibitory activity to preparing an insulin sensitizer. The 2-acetylamino gentisic acid can be used for preparing drugs for treating diabetes, obesity and complications thereof caused by insulin resistance and is obtained by fermenting and separating deep-sea streptomyces sp. 220225.

Application of aromatic compounds in preparing Caspase 3 inhibitor

The invention discloses an application of aromatic compounds in preparing a Caspase 3 inhibitor which is used in preparing drugs for curing diseases such as neurodegenerative diseases, ischemic symptoms, sepsis and the like caused by Caspase 3 over expression, wherein the neurodegenerative diseases refer to Alzheimer's disease, parkinsonism or Huntington's disease; and the ischemic symptoms refer to stroke or myocardial infarction. The aromatic compounds can be obtained by fermenting and separating actinomycetes.

Application of styrene phenol compounds to preparing insulin sensitizer

The invention discloses application of styrene phenol compounds with the inhibition activity of protein tyrosine phosphatases 1B and the structure shown as the formula (I) to preparing an insulin sensitizer. The insulin sensitizer is applied to preparing medicaments for treating diabetes mellitus, obesity and complications thereof caused by the insulin resistance. The styrene phenol compounds can be obtained by fermenting and separating streptomyces sp.220225.

Method for plating nickel on surface of carbon nanotube

The invention discloses a preparation method for plating nickel on the surface of a carbon nano-tube, which is characterized by adopting the thermal reduction method to carry out Ni modification to the surface of the carbon nano-tube and taking the Ni(Ac)2 with low molecular weight as the source of the elementary substance Ni. The main reagents are: NiAc2 4H2O, sodium citrate, ammonia and HNO3, wherein, the concentration of the NiAc2.4H2O is required to be 90 to 98 grams per liter while the concentration of sodium citrate is required to be 92 to 99 grams per liter. The requirements of the process conditions are that: the range of the PH value is 7.5 to 8.5, the soaking time is 50 to 70 minutes, the heat treatment time is 25 to 35 minutes, the heat treatment temperature is 310 DEG C. The preparation method of plating nickel on the surface of the carbon nano-tube of the invention not only changes the traditional way of palladium catalysis but also has the advantages of low price and convenient ...

Method for plating nickel on surface of carbon nanotube

The invention discloses a preparation method for plating nickel on the surface of a carbon nano-tube, which is characterized by adopting the thermal reduction method to carry out Ni modification to the surface of the carbon nano-tube and taking the Ni(Ac)2 with low molecular weight as the source of the elementary substance Ni. The main reagents are: NiAc2 4H2O, sodium citrate, ammonia and HNO3, wherein, the concentration of the NiAc2.4H2O is required to be 90 to 98 grams per liter while the concentration of sodium citrate is required to be 92 to 99 grams per liter. The requirements of the process conditions are that: the range of the PH value is 7.5 to 8.5, the soaking time is 50 to 70 minutes, the heat treatment time is 25 to 35 minutes, the heat treatment temperature is 310 DEG C. The preparation method of plating nickel on the surface of the carbon nano-tube of the invention not only changes the traditional way of palladium catalysis but also has the advantages of low price and convenient ...

Method for discriminating stress concentration of ferromagnetic materials by utilizing detection of metal magnetic memory

The invention provides a method for discriminating stress concentration of ferromagnetic materials by utilizing detection of metal magnetic memory, which belongs to the field of metal nondestructive detection. The method adopts a stress concentration magnetic detector at least comprising two scan channels, and specifically comprises the following: step 1, preparing for pre-detection; step 2, using the stress concentration magnetic detector to measure normal magnetic field intensity Hy(x) and tangential magnetic field intensity Hx(x) on the surface of a detected ferromagnetic material along a length direction; step 3, performing arithmetic mean on the acquired normal magnetic field intensity Hy(x) and tangential magnetic field intensity Hx(x) of two or more channels respectively; Step 4, performing smoothed data filtering on data after arithmetic mean; step 5, performing wavelet filtering on the data after smoothed data filtering; step 6, calculating normal magnetic field gradient, tangential ...

Fault simulation combined test table of machine drive system

The invention discloses a fault simulation combined test table of a machine drive system, which is used for simulating the common faults of bearing faults, gear faults, rotor unbalance faults and multi-part mixed faults of pivotal parts of the machine drive system. The combined test table comprises a base (16), wherein the base comprises a first guide groove (13), a second guide groove (18) and a power distribution groove (15). A designed special bearing support can is convenient for replacing a bearing and is used for installing an eddy current displacement sensor and a vibration accelerometer, and a gear which is arranged in the combined test table is fixedly assembled with a shaft by a special tapered assembling suite which is convenient to assemble and disassemble. Compared with most of the traditional homogenous test tables, no matter the fault simulation combined test table is used for researching and validating the validity and the accuracy of a fault diagnosis method or is used ...

Large-sized low-speed heavy-loaded gear box fault diagnosis method

Rust-resistant agent for concrete reinforcing bar and preparation method thereof

The invention discloses a rust-resistant agent for a concrete reinforcing bar and a preparation method thereof. The rust-resistant agent for the concrete reinforcing bar is prepared based on a gas-phase corrosion inhibitor prepared by reacting a dicarboxylic acid with organic amine. The rust-resistant agent for the concrete reinforcing bar comprises the following raw materials in percentage by mass: 5 to 10 percent of sodium monofluorophosphate, 2 to 5 percent of calcium gluconate, 20 to 40 percent of the gas-phase corrosion inhibitor and the balance of water. The rust-resistant agent for theconcrete reinforcing bar of the invention does not comprise nitrite, comprises the gas-phase corrosion inhibitor and has a function of migrating and diffusing in the concrete. Compared with the traditional rust-resistant agent for the reinforcing bar, the rust-resistant agent for the concrete reinforcing bar has the advantages of excellent corrosion inhibition and rust-resistant properties, high environmentally-friendly ...

Method for forming arginine self-assembly corrosion inhibition film on copper surface

The invention discloses a method for forming an arginine self-assembly corrosion inhibitor film on the copper surface, comprising the steps as follows: a. pure copper is gradually ground and polished from 1# to 6#, deoiled by anhydrous alcohol, cleaned by deioned water and prepared for use; b. the arginine solution with the concentration of 1*10-1*10mol/L and the KI solution with the concentration of 5*10mol/L compose a mixed self-assembly solution; and c. the copper is dipped in the mixed self-assembly solution, with the dipping temperature of room temperature and the assembly time of 2-6 hours. The adopted corrosion inhibitor arginine is a green and environment-protective corrosion inhibitor and harmless to the environment. The electro-chemical data indicates that the best assembly concentration of the arginine assembly solution is 10mol/L; and when iodine ions are added in the assembly solution, the corrosion inhibition efficiency of the assembly film is greatly improved.

Copper pickling and environment-friendly corrosion inhibitor

The invention relates to an environment-friendly corrosion inhibiter of copper used in acid medium, made by combining methionine and zinc ion, wherein, the concentration of methionine ranges from 5mM to 14mM, and the concentration of zinc ion is within 0.05mM to 12.5mM. When the concentration of single methionine is 12mM, the effect is the best; while 12mM methionine is compounded with 0.5mM zincion, the effect of the corrosion inhibiter is much better. When the corrosion inhibiter made from 12mM methionine and 0.5mM zinc ion according to the invention is put into the 0.5M hydrochloric acid,the corrosion current of the copper is greatly reduced and the inhibition efficiency is about 91.96 percent. The corrosion inhibiter has low cost, is environment-friendly, causes the environment lessharm and has distinct inhibition effect on the copper.

Fault simulation combined test table of machine drive system

The invention discloses a fault simulation combined test table of a machine drive system, which is used for simulating the common faults of bearing faults, gear faults, rotor unbalance faults and multi-part mixed faults of pivotal parts of the machine drive system. The combined test table comprises a base (16), wherein the base comprises a first guide groove (13), a second guide groove (18) and apower distribution groove (15). A designed special bearing support can is convenient for replacing a bearing and is used for installing an eddy current displacement sensor and a vibration accelerometer, and a gear which is arranged in the combined test table is fixedly assembled with a shaft by a special tapered assembling suite which is convenient to assemble and disassemble. Compared with most of the traditional homogenous test tables, no matter the fault simulation combined test table is used for researching and validating the validity and the accuracy of a fault diagnosis method or is used for ...

Traditional Chinese medicine for treating hypertension

The invention relates to a traditional Chinese medicine for treating hypertension, belonging to a medicine prepared from Chinese medicinal herbs, mainly aiming at solving the problems of poor treatment effect, high side effect and high price of traditional Chinese medicines and western medicines which are sold on a market and treat the hypertension. The used Chinese medicinal herbs include the following materials by weight: 5-7 grams of flos chrysanthemi indici, 6-7 grams of cordyceps, 3-4 grams of liquorices, 5-6 grams of pseudo-ginseng, 7-8 grams of radix salviae miltiorrhizae, 3-4 grams of cordate houttuynia, 4-6 grams of honeysuckles and 3-5 grams of dandelion. The Chinese medicinal herbs are decocted by adding water and then filtered for administration, wherein the water is added until the water surface is twice higher than the height of the Chinese medicinal herbs. The invention has good effect on treating the hypertension and low recurrence rate and price and has no side effect.

Method for extracting feature information of weak faults of low-speed heavy-duty equipment

The invention discloses a method for extracting feature information of weak faults of low-speed heavy-duty equipment, which can be used for extracting signals of the weak faults of the equipment. Themethod comprises the following steps: acquiring vibration signals under the working state of the equipment through an acceleration sensor arranged on a bearing seat of the equipment; carrying out wavelet decomposition on the acquired vibration signals; performing stochastic resonance processing and mutual correlation processing for low-frequency signals obtained by the decomposition; and carryingout Fourier transform on the mutual correlation result to extract the feature of the weak faults of the equipment. The method can effectively extract the feature information of the weak faults of thelow-speed heavy-duty equipment, and provides effective basis for the fault diagnosis of the equipment.

Intelligent fault diagnosis method for gear box

The invention discloses an intelligent fault diagnosis method for a gear box, which comprises the steps of detecting and judging, wherein the result of judging is that the hidden trouble of fault exists or does not exist; if so, early warning; if not, finishing. The steps at least comprise case-based reasoning and judging, rule-based reasoning and judging, and SVM judging. The intelligent fault diagnosis method overcomes the defects of the single diagnosis method, such as easy missed diagnosis, difficult obtaining of diagnosis knowledge, and the lack of fault case samples in the existing intelligent diagnosis, can intelligently diagnose the hidden trouble of fault of the gear case, effectively improve fault precision rate of the gear box, realize intelligent diagnosis on the gear box, lower labor intensity of diagnosis personnel and risk of missed diagnosis.

Method of fault diagnosis on ball socketed bearing of steel-making converter by comprehensive analysis

The invention discloses a method of fault diagnosis on a ball socketed bearing of a steel-making converter by comprehensive analysis. The method carries out fault diagnosis on the ball socketed bearing of the steel-making converter by using vibration signal analysis and grease oil analysis. The method comprises the following steps of: firstly, selecting evenly distributed measuring points on the periphery of the outer ring of the bearing, and then punching bearing seats at the measuring points; carrying out resonance demodulation and wavelet noise reduction analysis on acquired bearing vibration signals; firstly, selecting centre frequency and bandwidth according to frequency bands generated in resonance peaks in a frequency spectrogram to carry out bandpass filtering, and then carrying out wavelet noise reduction and Hilbert demodulation treatment on the filtered signals; on the basis of detecting the conventional typical properties, carrying out qualitative and quantitative analysis on ...

Portable vibration data collector and method based on embedded technology

Application of 2-acetylamino gentisic acid to preparing insulin sensitizer

The invention discloses application of a 2-acetylamino gentisic acid compound with protein tyrosine phosphatase 1B inhibitory activity to preparing an insulin sensitizer. The 2-acetylamino gentisic acid can be used for preparing drugs for treating diabetes, obesity and complications thereof caused by insulin resistance and is obtained by fermenting and separating deep-sea streptomyces sp. 220225.

Method for detecting and diagnosing faults of intermittent low-speed and heavy-load device

The invention discloses a method for state monitoring and fault diagnosis of an intermittent large-scale low-speed and heavy-load production device, wherein the state monitoring and the fault diagnosis can not be effectively solved by utilizing the vibration signal analysis method, and the method is the technical method for carrying out the state monitoring and the fault analysis and diagnosis onthe intermittent large-scale low-speed and heavy-load device through physical and chemical index detection, spectral analysis and ferrographic analysis of lubricating oil liquid (grease) used by the device. The invention provides an early wear fault diagnosis and maintenance scheme of the low-speed and heavy-load device, which can improve the accuracy of lubrication state monitoring of the low-speed and heavy-load device and the using management level of the lubricating oil (grease), save maintenance cost, prolong the service life of the device and create greater production value.

Copper pickling and environment-friendly corrosion inhibitor

The invention relates to an environment-friendly corrosion inhibiter of copper used in acid medium, made by combining methionine and zinc ion, wherein, the concentration of methionine ranges from 5mM to 14mM, and the concentration of zinc ion is within 0.05mM to 12.5mM. When the concentration of single methionine is 12mM, the effect is the best; while 12mM methionine is compounded with 0.5mM zinc ion, the effect of the corrosion inhibiter is much better. When the corrosion inhibiter made from 12mM methionine and 0.5mM zinc ion according to the invention is put into the 0.5M hydrochloric acid, the corrosion current of the copper is greatly reduced and the inhibition efficiency is about 91.96 percent. The corrosion inhibiter has low cost, is environment-friendly, causes the environment less harm and has distinct inhibition effect on the copper.

Intelligent fault diagnosis method for gear box

The invention discloses an intelligent fault diagnosis method for a gear box, which comprises the steps of detecting and judging, wherein the result of judging is that the hidden trouble of fault exists or does not exist; if so, early warning; if not, finishing. The steps at least comprise case-based reasoning and judging, rule-based reasoning and judging, and SVM judging. The intelligent fault diagnosis method overcomes the defects of the single diagnosis method, such as easy missed diagnosis, difficult obtaining of diagnosis knowledge, and the lack of fault case samples in the existing intelligent diagnosis, can intelligently diagnose the hidden trouble of fault of the gear case, effectively improve fault precision rate of the gear box, realize intelligent diagnosis on the gear box, lower labor intensity of diagnosis personnel and risk of missed diagnosis.

Simulation analysis method of vibratory response of variable working condition single-stage heavy gear case containing crackle fault

The invention relates to a simulation analysis method of the vibratory response of a variable working condition single-stage heavy gear case containing a crackle fault, which comprises the following steps: establishing a gear pair 3D solid model containing a crackle fault on the basis of 3D design software SolidWorks; leading the model into finite element analysis software ansys, programming a program capable of calculating the gear meshing rigidity of any meshing positions by combining menu operations of the ansys and APDL languages and outputting a result data file of the meshing rigidity; establishing a damping gear case system kinetic model of 8 degrees-of-freedom and kinetic simultaneous differential equations considering factors of the rigidity and the damping of a shaft and the case, an input torque and a load torque of a motor, and the like and utilizing MATLAB to solve the equations so as to simulate the system vibratory response of the single-stage heavy gear case containing a ...

Method for measuring content of cyclohexanone-oxime by liquid chromatography

The invention provides a method for measuring the content of cyclohexanone-oxime by liquid chromatography, which comprises the following steps of: adding alkali to regulate pH to be between 8 and 9, preparing standard solution and sample solution by using water as a diluent, and measuring by using a liquid chromatograph with an ultraviolet-visible detector, wherein the wavelength is 210nm, the column box temperature is 25 DEG C, and aqueous solution of acetonitrile is taken as a mobile phase; and after a base line of the chromatograph is stable, measuring the standard solution and the sample solution, namely injecting the standard solution, ensuring that the area change of two-time injected standard solution is less than 1 percent, injecting the sample solution during two-time standard solution injection, and measuring. Analysis accuracy is high, standard deviation is less than 1.0 percent, measuring time is short, and average recovery rate is 97.75 percent; and analysis steps are simple ...

Method for plating copper on surface of carbon nanotube

The invention discloses a preparation method for plating copper on the surface of a carbon nano-tube, which is characterized by adopting Cu2+ as the source of the elementary substance copper and adopting Zn or HCHO as a reducing agent. When adopting Zn as the reducing agent, the main reagents are: CuSO4.5H2O, Zn powder, glycerol, glycol, potassium sodium tartrate, FeSO4.7H2O and HNO3. When adopting the HCHO as the reducing agent, the main reagents are: CuSO4.5H2O, HCHO, EDTANa2, FeCl3.7H2O, triethanolamine, a, a-bipyridine, NaOH and HNO3. The technological process of the plating copper on the surface of the carbon nano-tube is as follows: carbon nano-tube oxidation, water scrubbing, plating, water scrubbing and drying. The preparation method of the plating copper on the surface of the carbon nano-tube of the invention not only changes the traditional way of palladium catalysis but also has the advantages of low price and convenient operation, which simplifies process and is simple.

Design method for widening curves in accordance with full trailer wheel route derivation and drift

The invention belongs to the technical field of port road design, in particular to a design method for widening curves in accordance with full trailer wheel route derivation and drift, comprising the following steps: selecting a full trailer; setting conditions that sideslip does not occur to the trailer; setting a drift angle of a semi-trailer when the drift of the trailer takes place; determining a calculation method for calculating a break angle theta of a tractor and the semi-trailer; setting occupied width of the trailer on a road surface when the sideslip and other accidents do not occur to the trailer; setting occupied lane width when the drift of the vehicle happens; adopting the parameters to establish a simulated cellular automata model of traffic; and performing simulation experimental analysis and selecting proper super-elevation. In the method of the invention, by quantizing impact factors related to the super-elevation, the optimum curve width can be obtained under the linear ...

Design method for widening curves in accordance with full trailer wheel route derivation and drift

The invention belongs to the technical field of port road design, in particular to a design method for widening curves in accordance with full trailer wheel route derivation and drift, comprising the following steps: selecting a full trailer; setting conditions that sideslip does not occur to the trailer; setting a drift angle of a semi-trailer when the drift of the trailer takes place; determining a calculation method for calculating a break angle theta of a tractor and the semi-trailer; setting occupied width of the trailer on a road surface when the sideslip and other accidents do not occur to the trailer; setting occupied lane width when the drift of the vehicle happens; adopting the parameters to establish a simulated cellular automata model of traffic; and performing simulation experimental analysis and selecting proper super-elevation. In the method of the invention, by quantizing impact factors related to the super-elevation, the optimum curve width can be obtained under the linear ...

Gear fault diagnosis method based on signal multi-characteristic matching

The invention discloses a gear fault diagnosis method based on signal multi-characteristic matching. The method comprises the following steps of: successively iterating and decomposing a gear vibration signal into a linear combination of m atoms based on a signal multi-characteristic dictionary, wherein the signal multi-characteristic dictionary consists of two sub-characteristic dictionaries, namely a Fourier dictionary and an impact time-frequency dictionary, and the sub-characteristic dictionaries are established according to different structure component characteristics of the signal; in the process of iterating and decomposing the signal each time, searching the most matching atom in each sub-characteristic dictionary by adopting a genetic algorithm to solve the sub-projection, wherein the weighted average of each sub-projection serves as the total projection, and the signal subtracts the total projection to form a residual signal for the next decomposition; after the decomposition ...

高速线材轧机齿轮箱故障检测板

The gear box fault detecting board for high speed wire rolling mill has one sensor to sense related vibration, one signal processor to receive the vibration signal from the sensor for amplification and processing, one demodulating converter connected to the signal processor to separate a demodulated signal from the AC vibration signal, one low frequency vibration separator also connected to the signal processor to separate 0-500 Hz low frequency vibration signal corresponding to the rotation speed, and one computer AD interface to receive signal from the demodulating converter and the low frequency vibration separator for sampling, analysis and diagnosis. The gear box fault detecting board of the present invention can collect and analyze the low frequency vibration signal and fault signal from the gear box of high speed wire rolling mill for further computerized analysis.

Ramp turn superelevation design method with consideration of drifting of heavy-duty trailer

The invention belongs to the technical field of port road design, in particular relates to a Ramp turn supperelcvation design method with the consideration of the driving characteristic of a heavy-duty trailer. The method comprises the following steps of: selecting a heavy-duty trailer; setting the condition for preventing the side slipping of the trailer; setting a drifting angle of a semitrailer into the formula shown in the specification of the invention when a drifting phenomenon happens; setting the occupation width of the trailer on the road when the trailer does not have accidents, such as side slipping, and the like; setting occupied lane width when the drifting accident happens; establishing a traffic flow imitation cellular automaton model on the basis of the parameters; establishing a comprehensive evaluation index of superelevation; and carrying out imitation test analysis and selecting proper superelevation. In the invention, an optimal superelevation value under specific road ...

Method for tracking and evaluating nonparametric outline based on shape semanteme

The invention relates to a method for tracking and evaluating a nonparametric outline based on shape semanteme. The method mainly comprises the following steps of: obtaining a corresponding relation between a nonparametric outline tracking result of the current frame of image and a standard outline position by adopting a minimum space distance method at first; performing a binary process on the nonparametric outline tracking result and a standard outline, and extracting a shape context characteristic of each outline point; and finally, searching by using a pyramid matching core from a partial region of an object relation obtained by the minimum space distance method so as to obtain a matching relation based on outline semanteme and distance measurement. By the method, evaluation of the effective nonparametric outline tracking result is realized; the method is universal and applicable to any outline tracking results; the outline expression is free from any limitation; a control point is ...

吗啉衍生物气相缓蚀剂的制备方法

The invention is a morphine derivative gas-phase corrosion inhibitor preparing method, including the steps: mixing morphine with secondary amine, dropping in formaldehyde or aldehyde solution, making them uniformly mix and react, making acid curing reaction on the mixed solution and fatty acid/benzene carbonic acid, stirring, filtering and obtaining the object product. The raw materials such as morphine, secondary amine, formaldehyde/aldehyde, fatty acid and benzene carbonic acid are all easy to obtain and cheap, and suitable for large-scale industrialized production. The preparing course has only three steps and is relative simple, all the reactions can be completed on routine conditions, and the requirements for devices are low, thus further reducing the preparation cost. In addition, all the anticorrosive experiments show that the object product has excellent corrosion inhibiting property.

Drug for treating cerebral thrombosis

The invention discloses a drug for treating cerebral thrombosis, mainly aiming at solving the problems of high price, long treatment course, nonideal treatment effect, large side effect and large damage to the liver and the kidney after long-term taking of the traditional drug for the cerebral thrombosis. The drug comprises the following raw materials: 6g of eucommia bark, 7g of chrysanthemum, 7g of oriental wormwood, 5g of cassia seed, 15g of dried tangerine peel, 7g of morinda officinalis, 4g of herba epimedii, 2g of rhizoma anemarrhenae, 6g of licorice root, 10g of angelica sinensis and 8g of rhizoma curculiginis. The drug has the advantages of good curative effect, quick action, low preparation cost, simple method, more ideal treatment effect, small side effect and no damage to the liver and the kidney after long-term taking.

Equipment operating and process quality state monitoring system for high-speed rolling mill

The invention discloses an equipment operating and process quality state monitoring system for a high-speed rolling mill, belonging to the technical field of high-speed wire rolling. Hardware comprises sensors for electric quantity, rotation speed and the like, a 4017+ intelligent data acquisition module, an RS485-RS232 communication conversion module and an industrial control computer. A rolling current signal, a rolling rotation speed signal and other signals are measured by the sensors, then subjected to A/D (Analog to Digital) conversion by the data acquisition module and then stored into the industrial control computer through the RS485-RS232 communication conversion module, the acquired data are issued to a network by utilizing an OPC (OLE (Object Linking and Embedding) for Process Control) protocol, and a user extracts the recorded information from an IE browser or a client side through the network for observing and analyzing. Software comprises an OPC communication module, an operation ...

Method for measuring ruthenium content using ethyne-air flame atomic absorption spectrometry

The invention provides a method for determining ruthenium content by acetylene-air flame atom absorption spectrum method, the procedures for which are: a sample is dried under 100-120 centigrade, burned under 400-600 centigrade, residual ash is removed; potassium hydroxide is added in a reference pure ruthenium powder and sample, which is heated under 360-390 centigrade to dissolve; surplus chlorhydric acid is added, so that the solution is acid; some de-saline water is added in the solution to prepare standard mother solution and sample solution; standard solutions of different concentrations are prepared by taking sample blank liquid as thinner; the spectrometer wavelength is adjusted to 344.9 nm, the acetylene flow 65 l/h, lamp current 10 mA; the zero is calibrated by using sample blank liquid, the standard solution is determined, and a standard work curve is established, parameters of the sample are input, the concentration and content of the ruthenium are measured in the sample. The ...

Intelligent gearbox fault diagnosis method based on mixed inference and neural network

The invention relates to an intelligent gearbox fault diagnosis method based on mixed inference and neural network, mainly comprising the following steps: enriching a knowledge base of an intelligent diagnosis system; storing expert knowledge into a computer; combining the neural network to recognize patterns; analyzing a main abnormal phenomenon of a gearbox; systematically researching generation mechanisms of vibration and noise of a gear; analyzing a mathematical model of gear vibration; analyzing the vibration mechanisms of various fault types by fully using on-site fault data; enriching time domain and frequency domain characteristics of various faults; and ensuring a characteristic extraction method of gear fault signals. A data analysis method mainly comprises the steps: band-pass filter frequency analysis, double-meaning analysis, envelope demodulation analysis and demodulation analysis based on EMD. The intelligent gearbox fault diagnosis method based on mixed inference and neural ...

Construction integration solar comprehensive heat utilization system

A building integrated solar energy comprehensive thermal utilization system relates to the solar energy comprehensive thermal utilization system. The building integrated solar energy comprehensive thermal utilization system can solve the problems that a glass curtain wall structure in the existing building does not utilize the solar energy initiatively, the temperature of a non-flowable air spacebetween a wall body and curtain wall glass is excessively high in summer, so the heat of the corresponding room is much higher than the ordinary wall body room and the load of an air conditioner is further increased, and the solar heat in summer can not be effectively utilized. The periphery of a compound solar heat collection component is hermetically connected with the outer surface of a building outer wall, a cavity is formed between the two, a plurality of pieces of heat-absorbing glass are correspondingly arranged on an opening of a planar heat collection frame body, a plurality of hemispherical ...

Intelligent gearbox fault diagnosis method based on mixed inference and neural network

The invention relates to an intelligent gearbox fault diagnosis method based on mixed inference and neural network, mainly comprising the following steps: enriching a knowledge base of an intelligent diagnosis system; storing expert knowledge into a computer; combining the neural network to recognize patterns; analyzing a main abnormal phenomenon of a gearbox; systematically researching generation mechanisms of vibration and noise of a gear; analyzing a mathematical model of gear vibration; analyzing the vibration mechanisms of various fault types by fully using on-site fault data; enriching time domain and frequency domain characteristics of various faults; and ensuring a characteristic extraction method of gear fault signals. A data analysis method mainly comprises the steps: band-pass filter frequency analysis, double-meaning analysis, envelope demodulation analysis and demodulation analysis based on EMD. The intelligent gearbox fault diagnosis method based on mixed inference and neural ...

Method of fault diagnosis on ball socketed bearing of steel-making converter by comprehensive analysis

The invention discloses a method of fault diagnosis on a ball socketed bearing of a steel-making converter by comprehensive analysis. The method carries out fault diagnosis on the ball socketed bearing of the steel-making converter by using vibration signal analysis and grease oil analysis. The method comprises the following steps of: firstly, selecting evenly distributed measuring points on the periphery of the outer ring of the bearing, and then punching bearing seats at the measuring points; carrying out resonance demodulation and wavelet noise reduction analysis on acquired bearing vibration signals; firstly, selecting centre frequency and bandwidth according to frequency bands generated in resonance peaks in a frequency spectrogram to carry out bandpass filtering, and then carrying out wavelet noise reduction and Hilbert demodulation treatment on the filtered signals; on the basis of detecting the conventional typical properties, carrying out qualitative and quantitative analysison ...

Application of styrene phenol compounds to preparing insulin sensitizer

The invention discloses application of styrene phenol compounds with the inhibition activity of protein tyrosine phosphatases 1B and the structure shown as the formula (I) to preparing an insulin sensitizer. The insulin sensitizer is applied to preparing medicaments for treating diabetes mellitus, obesity and complications thereof caused by the insulin resistance. The styrene phenol compounds can be obtained by fermenting and separating streptomyces sp.220225.

Alkaline-earth metal fluoride modified alumina supporter, preparation method thereof, and silver catalyst made from alumina supporter and application of silver catalyst in ethylene epoxide (EO) production

The invention relates to an alumina supporter which has the surface modified through alkaline-earth metal fluoride and is used for producing ethylene epoxide through epoxidation reaction of ethylene by gas-solid catalyst, a preparation method of the alumina supporter, a silver catalyst made from the alumina supporter and application of the silver catalyst in ethylene epoxide (EO) production. The silver catalyst produced by adopting the invention contains effective amount of silver for catalysis, optional alkali metal or a mixture thereof, optional alkaline-earth metal or a mixture thereof, a rhenium auxiliary agent and an Alpha-alumina supporter with the surface thereof modified through alkaline-earth metal fluoride. The supporter and the obtained silver catalyst have higher activity and long-term stability when being used for preparing ethylene epoxide through epoxidation reaction of ethylene.

Construction integration solar air heating system

A building integrated solar air heating system relates to a solar air heating system. The building integrated solar air heating system can solve the problems that a glass curtain wall structure in the existing building does not utilize the solar energy initiatively, the temperature of a non-flowable air space between a wall body and curtain wall glass is excessively high in summer, so the heat of the corresponding room is much higher than the ordinary wall body room and the load of an air conditioner is further increased. The periphery of a compound solar heat collection component is hermetically connected with the outer surface of a building outer wall, a cavity is formed between the two; a plurality of pieces of heat-absorbing glass are correspondingly arranged on an opening of a planar heat collection frame body, a plurality of hemispherical pits are evenly distributed and punched on the outer surface of the planar heat collection frame body, and a through hole with the hole diameter ...

Simulation analysis method of vibratory response of variable working condition single-stage heavy gear case containing crackle fault

The invention relates to a simulation analysis method of the vibratory response of a variable working condition single-stage heavy gear case containing a crackle fault, which comprises the following steps: establishing a gear pair 3D solid model containing a crackle fault on the basis of 3D design software SolidWorks; leading the model into finite element analysis software ansys, programming a program capable of calculating the gear meshing rigidity of any meshing positions by combining menu operations of the ansys and APDL languages and outputting a result data file of the meshing rigidity; establishing a damping gear case system kinetic model of 8 degrees-of-freedom and kinetic simultaneous differential equations considering factors of the rigidity and the damping of a shaft and the case, an input torque and a load torque of a motor, and the like and utilizing MATLAB to solve the equations so as to simulate the system vibratory response of the single-stage heavy gear case containinga ...

Preparing process of gas phase corrosion inhibitor

Black bean soy

The black bean soy is produced with black bean, bean residue, bran and flour and through soaking the said material, steaming, cooling in air, inoculating, preparing oil, fermenting, adding salt waterand oil. It is delicious and has certain health function.

Method for extracting feature information of weak faults of low-speed heavy-duty equipment

The invention discloses a method for extracting feature information of weak faults of low-speed heavy-duty equipment, which can be used for extracting signals of the weak faults of the equipment. The method comprises the following steps: acquiring vibration signals under the working state of the equipment through an acceleration sensor arranged on a bearing seat of the equipment; carrying out wavelet decomposition on the acquired vibration signals; performing stochastic resonance processing and mutual correlation processing for low-frequency signals obtained by the decomposition; and carryingout Fourier transform on the mutual correlation result to extract the feature of the weak faults of the equipment. The method can effectively extract the feature information of the weak faults of thelow-speed heavy-duty equipment, and provides effective basis for the fault diagnosis of the equipment.

Method for detecting and diagnosing faults of intermittent low-speed and heavy-load device

The invention discloses a method for state monitoring and fault diagnosis of an intermittent large-scale low-speed and heavy-load production device, wherein the state monitoring and the fault diagnosis can not be effectively solved by utilizing the vibration signal analysis method, and the method is the technical method for carrying out the state monitoring and the fault analysis and diagnosis on the intermittent large-scale low-speed and heavy-load device through physical and chemical index detection, spectral analysis and ferrographic analysis of lubricating oil liquid (grease) used by the device. The invention provides an early wear fault diagnosis and maintenance scheme of the low-speed and heavy-load device, which can improve the accuracy of lubrication state monitoring of the low-speed and heavy-load device and the using management level of the lubricating oil (grease), save maintenance cost, prolong the service life of the device and create greater production value.

Processing method of equipment vibration signal

The invention relates to a processing method of equipment vibration signal, including the following steps: step (1), the equipment vibration signal is measured; step (2), the equipment vibration signal is processed, concrete steps include: step (2.1), the equipment vibration signal is decomposed into more than four independent frequency bands by second generation wavelet packet technology; step (2.2), energy of each decomposed frequency band is respectively calculated; step (2.3), the frequency band with energy maximum is selected, and autoregressive spectral processing is carried out on the corresponding second generation wavelet decomposed signal thereof, so as to obtain autoregressive spectrogram; step (3), equipment failure hidden trouble is judged according to the autoregressive spectrogram. In the processing method of the invention, after variable working condition equipment vibration signal is processed, a waveform graph beneficial to judgement can be obtained, thus creating condition ...

一种三偏心蝶阀的制造参数优选方法

The optimization process for the manufacture parameters of three eccentric butterfly valve includes establishing mathematic model with the basic structural parameters of the valve, including half conic angle, valve plate inclination angle, valve plate thickness, middle valve plate diameter, central valve shaft height, valve shaft eccentric distance, etc.; processing the data with ANSYS software development tool and establishing limited model of known structure; finding out with the non-linear procedure calculation module of ANSYS software the no-medium pressure and the opening torque under certain closing torque as the opening friction torque of the sealing pair and as the destination function of subsequent optimization design. The present invention performs the optimal design of three eccentric butterfly valve and can solve the sealing problem of metal surface effectively.

Electrocardiogram signal lossless compression method based on PT conversion and linear prediction combination

The invention discloses an electrocardiogram signal lossless compression method based on PT conversion and linear prediction combination, belonging to the technical field of data processing. The method comprises the following compression processes: carrying out PT conversion on an original electrocardiogram signal; subtracting a converted original signal value and an estimated value to obtain a residual error signal of the whole electrocardiogram signal; carrying out self-adaption variable grade RICE coding on the residual error signal to output a coding bit stream and finishing the lossless compression on the electrocardiogram signal; decoding the compressed bit stream; reconstructing the signal and finishing decompression. The lossless compression method ensures the information completion and accuracy of the compressed electrocardiogram signal and can be used for transmitting and storing the electrocardiogram signal.

Portable vibration data collector and method based on embedded technology

The invention relates to the data acquisition and equipment fault diagnosis field, in particular to a portable vibration data acquisition device and a method based on embedded technology. The device comprises an acceleration transducer, an acceleration transducer interface module, a capacitance isolation module, a programmed control amplifying module, a self-adapting antialiasing filter, an AD converter and the bus interface of the converter which are connected in turn; moreover, the device also comprises an ARM minimum system, a DIM144 interface module, a singlechip as well as an electronic label module, a keyboard, a power source management and voltage conversion module which are connected with the singlechip; in addition, the programmed control amplifying module and the self-adapting antialiasing filter are also connected with a singlechip 8. The device communicates with an upper computer through a serial port to assign point inspection task, and transmits the sampling frequency in the ...

Dihydropyrrolones derivative as Caspase-3 inhibitor

The invention discloses a Caspase-3 inhibitor, namely a dihydropyrrolones derivative, with a molecular structural formula (1), and pharmaceutically acceptable salts thereof. In the molecular structural formula, R1 represents alkyl, aryl or heterocyclic radical; R2 represents hydrogen, alkyl, aryl or heterocyclic radical; R3 represents alkoxyl, aryloxy, primary amino radical or secondary amino radical; and R4 represents primary amino radical, secondary amino radical, alkoxyl, aryloxy, alkylthio radical, arylthio radical or N-containing heterocyclic radical. The dihydropyrrolones derivative or the pharmaceutically acceptable salts thereof, as a Caspase-3 inhibitor, can be applied to treating diseases caused by excessive apoptosis of cells, such as acquired immunity deficiency syndrome, serious hepatitis, osteoarthritis, senile dementia, Parkinson's disease, amyotrophic lateral sclerosis, Huntingdon's chorea, spinal and cerebellar ataxia, muscular dystrophy, cerebral ischemia, cerebral injury ...

Application of aromatic compounds in preparing Caspase 3 inhibitor

The invention discloses an application of aromatic compounds in preparing a Caspase 3 inhibitor which is used in preparing drugs for curing diseases such as neurodegenerative diseases, ischemic symptoms, sepsis and the like caused by Caspase 3 over expression, wherein the neurodegenerative diseases refer to Alzheimer's disease, parkinsonism or Huntington's disease; and the ischemic symptoms refer to stroke or myocardial infarction. The aromatic compounds can be obtained by fermenting and separating actinomycetes.

Method for forming amino acid self-assembly corrosion inhibition membrane with fluorescent characteristics on copper surface

The invention discloses a method for forming an amino acid self-assembly corrosion inhibition membrane with fluorescent characteristics on a copper surface, which comprises the following steps of: polishing pure copper step by step by metallographical sand paper from No.1 to No.6, degreasing with absolute ethyl alcohol and cleaning with deionized water for later use; processing a copper test specimen by using aqueous solution of amino acid to obtain the copper test specimen modified by the amino acid; and assembling fluorescent reagent onto the surface of the copper test specimen indirectly under the electrostatic attraction action between 1-naphthylamine sodium diacetate (NADA) serving as the fluorescent reagent and the amino acid to prepare a dual-layer photosensitive corrosion inhibition self-assembly corrosion inhibition functional membrane, and characterizing the fluorescent characteristics and corrosion inhibition effect of the membrane respectively by adopting fluorescence spectra ...

Chinese medicine for treating hypertension

The invention discloses a Chinese medicine for treating hypertension, relates to a Chinese medicine prepared from Chinese herbal medicine for treating the hypertension, and mainly solves the problems that the blood pressure restores to the original level after the medicine is discontinued and the symptoms but not the diseases is cured can be overcome by adopting a west medicine method to treat the hypertension. The Chinese medicine is prepared by adding 3500 ml of water in 10 g of Indian dendranthema flower, 6 g of spica prunellae, 15 g of white paeony root, 6 g of flower of common tulip, 7 g of fructus schisandrae chinensis and 10 g of dried orange peel, decocting the mixture for 50 minutes and filtering to obtain 800ml of filtrate. The Chinese medicine has the advantages of favorable curative effect and quick response and is prepared by a simple method; and after the medicine is discontinued, the blood pressure cannot restore to the original high-pressure degree.

Dedicated base of fault simulation comprehensive experiment table for machine driven system

The invention discloses a dedicated base of a fault simulation comprehensive experiment table for a machine driven system, which comprises a first guide slot (1), a second guide slot (2), a power distribution groove (3) and a supporting foot (4). Three lines of uniformly distributed screwed holes (5) are designed on a top surface of the base for installing parts flexibly; and a bottom surface of the base is designed to the shape of a Chinese character 'ri', which reduces the contact area between the base and the foundation, thus reducing the processing cost and difficulty obviously. A boss (9) is arranged above a common wall of the first guide slot (1) and the second guide slot (2) for positioning accurately in radial direction when a bearing seat is installed. The guide slot (1) is provided with a groove (6) for installing an alternating-current motor; a groove (7) is used for holding a gear pair, and a through hole (8) is used for wiring data lines of a sensor. The design of the base ...

Chaos-based method for detecting weak signals of low speed and heavy-duty device

The invention relates to a chaos-based method for detecting weak signals of a low speed and heavy-duty device, which is used to detect weak signals with given frequency. In the method, a vibration pickup is used to extract early weak failure symptom signals of the low speed and heavy-duty device, amplify and filter the signals; then a analog-to-digital converter is used to convert analog signals into digital signals, carry out autocorrelation and demodulating treatment on the digital signals, de-mean and normalize the treated signals and add the signals to a preset chaos oscillating system; a computer is used to refer to Hu invariant moment indicators to automatically distinguish phase diagram change of system output so as to distinguish if weak failure symptom signals with given frequency are contained in the signals. The method has the advantages that a chaos oscillator can be used to detect the weak modulation signals, the computer can automatically distinguish phase diagram change of ...

Electrocardiogram signal lossless compression method based on PT conversion and linear prediction combination

The invention discloses an electrocardiogram signal lossless compression method based on PT conversion and linear prediction combination, belonging to the technical field of data processing. The method comprises the following compression processes: carrying out PT conversion on an original electrocardiogram signal; subtracting a converted original signal value and an estimated value to obtain a residual error signal of the whole electrocardiogram signal; carrying out self-adaption variable grade RICE coding on the residual error signal to output a coding bit stream and finishing the lossless compression on the electrocardiogram signal; decoding the compressed bit stream; reconstructing the signal and finishing decompression. The lossless compression method ensures the information completion and accuracy of the compressed electrocardiogram signal and can be used for transmitting and storing the electrocardiogram signal.

Construction integration solar air heating system

A building integrated solar air heating system relates to a solar air heating system. The building integrated solar air heating system can solve the problems that a glass curtain wall structure in theexisting building does not utilize the solar energy initiatively, the temperature of a non-flowable air space between a wall body and curtain wall glass is excessively high in summer, so the heat ofthe corresponding room is much higher than the ordinary wall body room and the load of an air conditioner is further increased. The periphery of a compound solar heat collection component is hermetically connected with the outer surface of a building outer wall, a cavity is formed between the two; a plurality of pieces of heat-absorbing glass are correspondingly arranged on an opening of a planarheat collection frame body, a plurality of hemispherical pits are evenly distributed and punched on the outer surface of the planar heat collection frame body, and a through hole with the hole diameter of ...

Pipeline defect surface integrity detection device and detection method

The invention discloses a pipeline defect surface integrity detection device and a pipeline defect surface integrity detection method for solving the problem that the damage degree of a pipeline is difficult to judge because the conventional pipe detection device has different detection sensitivities for different materials and defects of different types and the measurement data are independent with one another. The ultrasonic detection data signal output/input end, the image detection data signal output/input end and the position information data output end of a detection assembly are connected with the ultrasonic detection data signal input/output end, the image detection data signal input/output end and the position information data input end of a control assembly respectively. The method comprises the following steps of: 1, acquiring image data of a pipeline damaged surface, and calculating a pipeline defect surface area and a damage characteristic parameter; 2, detecting the thickness ...

Data acquisition device for extracting multiple signals of low-speed heavy loading equipment

The invention relates to a data acquisition device, in particular to a data acquisition device used for extracting multiple signals of low-speed heavy loading equipment, which comprises an acceleration sensor, a temperature sensor, a sound sensor, a resonator, an A/D conversion module, a controller, a communication module, a touch screen and an electric label module, wherein the resonator comprises a photo-electric coupling circuit, a differential amplification circuit, a resonant circuit, a high-pass filter circuit, an unipolar circuit and an anti-aliasing filter circuit which are connected in sequence; the acceleration sensor, the temperature sensor and the sound sensor are all connected with the photo-electric coupling circuit of the resonator; the anti-aliasing filter circuit of the resonator is connected with the controller by the A/D conversion module; and the controller is connected with the touch screen, the communication module and the electric label module respectively. In the ...

Construction integration solar synthesis heat utilization system

A building integrated solar energy comprehensive thermal utilization system relates to the solar energy comprehensive thermal utilization system. The building integrated solar energy comprehensive thermal utilization system can solve the problems that a glass curtain wall structure in the existing building does not utilize the solar energy initiatively, the temperature of a non-flowable air space between a wall body and curtain wall glass is excessively high in summer, so the heat of the corresponding room is much higher than the ordinary wall body room and the load of an air conditioner is further increased, and the solar heat in summer can not be effectively utilized. The periphery of a compound solar heat collection component is hermetically connected with the outer surface of a building outer wall, a cavity is formed between the two, a plurality of pieces of heat-absorbing glass are correspondingly arranged on an opening of a planar heat collection frame body, a plurality of hemispherical ...

Weak fault parallel-connected random resonance detection method of low-speed heave-load device

The invention discloses a weak fault parallel-connected random resonance detection method of a low-speed heave-load device for detecting weak fault signals of a device. The method comprises extracting a device vibration signal through a vibration sensor mounted on a position to be detected, amplifying and filtering the signals, and converting analogue signals into digital signals through an analog-digital converter, then processing by a parallel-connected random resonance method for output. The fault type is determined by extracting the weak characteristics of fault signals from the waveform of the output signal and the spectrogram thereof. The method combines random resonance method and self-correlation processing method, can effectively extract early weak fault characteristic signals in the low-speed heavy-load device so as to find fault hidden dangers ahead of time.

Method for measuring ruthenium content using ethyne-air flame atomic absorption spectrometry

Traditional Chinese medicament for treating thrombus

The invention discloses a traditional Chinese medicament for treating thrombus and aims to solve the problems of high price, long treatment course, poor treatment effect, great side effect and great damage to the liver and the kidney of the traditional medicaments for treating thrombus. The traditional Chinese medicament is prepared from the following raw materials by weight: 5 grams of eucommia, 7 grams of chrysanthemum flower, 7 grams of divaricate saposhnikovia root, 5 grams of cassia seed, 15 grams of dried tangerine peel, 7 grams of the root of red-rooted salvia, 15 grams of hawthorn, 3 grams of broadleaf holly leaf, 4 grams of epimedium, 2 grams of anemarrhena, 3 grams of phellodendron, 6 grams of liquorice and 10 grams of angelica. The traditional Chinese medicament has the advantages of good curative effect, fast effect, low price, relatively ideal curative effect, little side effect and basically no damage to the liver and the kidney in long-term taking.

Dedicated base of fault simulation comprehensive experiment table for machine driven system

The invention discloses a dedicated base of a fault simulation comprehensive experiment table for a machine driven system, which comprises a first guide slot (1), a second guide slot (2), a power distribution groove (3) and a supporting foot (4). Three lines of uniformly distributed screwed holes (5) are designed on a top surface of the base for installing parts flexibly; and a bottom surface of the base is designed to the shape of a Chinese character 'ri', which reduces the contact area between the base and the foundation, thus reducing the processing cost and difficulty obviously. A boss (9) is arranged above a common wall of the first guide slot (1) and the second guide slot (2) for positioning accurately in radial direction when a bearing seat is installed. The guide slot (1) is provided with a groove (6) for installing an alternating-current motor; a groove (7) is used for holding a gear pair, and a through hole (8) is used for wiring data lines of a sensor. The design of the base ...

Information Processing Method and Electronic Device

An information processing method and an electronic device are provided. The method includes: detecting a first physiological parameter of a user; obtaining a change in the first physiological parameter of the user based on the first physiological parameter of the user; controlling, based on the change in the first physiological parameter of the user, an image outputting unit to output the adjusted image information; determining an audio adjustment parameter for an audio outputting unit based on the change in the first physiological parameter; and adjusting output power of the audio outputting unit based on the audio adjustment parameter, and controlling the audio outputting unit to output audio information at the adjusted output power, so that the outputted audio information coincides with the outputted adjusted image information.

INFORMATION PROCESSING METHOD AND ELECTRONIC DEVICE

The present disclosure provides an information processing method and an electronic device. The method comprises: obtaining an audio signal in an output signal; determining N channel signals in the audio signal, where N is a positive integer; determining whether the audio signal needs to be adjusted or not; and adjusting, when the audio signal needs to be adjusted, an output parameter of at least one of the N channel signals respectively, and outputting the N adjusted channel signals via an audio output device, such that the N adjusted channel signals correspond to a sound source position of the audio signal. The above method according to the present disclosure can solve the technical problem that the audio signal cannot be adjusted in real time and achieve a technical effect of automatic adjustment of the audio signal. 1. An information processing method , comprising:obtaining an audio signal in an output signal;determining N channel signals in the audio signal, where N is a positive integer;determining whether the audio signal needs to be adjusted; andadjusting, if the audio signal needs to be adjusted, an output parameter of at least one of the N channel signals respectively, and outputting the N adjusted channel signals via an audio output device, such that the N adjusted channel signals correspond to a sound source position of the audio signal.2. The method of claim 1 , further comprising claim 1 , prior to said determining whether the audio signal needs to be adjusted:determining a device type of the audio output device, wherein the device type corresponds to a mobile audio output device or a fixed audio output device, the mobile audio output device matching a head gesture of a user of the electronic device,wherein said determining whether the audio signal needs to be adjusted comprises: determining whether the audio signal needs to be adjusted based on the device type.3. The method of claim 2 , wherein said determining whether the audio signal needs to be ...

ALUMINA CARRIER, METHOD OF PREPARING THE SAME, AND SILVER CATALYST

The present disclosure discloses an α-alumina carrier, comprising the elements of lanthanum and silicon both dispersed in the interior and on the surface of the carrier. The mass ratio of the element of lanthanum to the element of silicon is in the range from 0.1:1 to 20:1. The inventors of the present disclosure have made extensive researches into the field of the silver catalyst and alumina carrier thereof, and added the elements of lanthanum and silicon (i.e., bulk phase addition) in preparing the alumina carrier used in the silver catalyst. The carrier thus obtained contains the elements of silicon and lanthanum both in the interior and on the surface thereof, and has improved specific surface area and strength. The silver catalyst prepared with the carrier can react in a low reaction temperature (has a high reaction activity) and has a high selectivity in producing ethylene oxide through oxidation of ethylene. 1. An α-alumina carrier , comprising elements of lanthanum and silicon both dispersed in an interior and on a surface of the carrier.2. The α-alumina carrier of claim 1 , wherein a mass ratio of the element of lanthanum to the element of silicon is in the range from 0.1:1 to 20:1.3. The α-alumina carrier of claim 1 , wherein the total content of the elements of silicon and lanthanum accounts for 0.01 wt % to 3.0 wt % of the carrier.4. The α-alumina carrier of claim 1 , wherein the α-alumina carrier has one or more of the following characteristics:{'sup': 2', '2, '1) a specific surface area in the range from 0.7 m/g to 2.0 m/g,'}2) a pore volume in the range from 0.35 ml/g to 0.85 ml/g,3) water absorption equal to or higher than 30%,4) side crushing strength in the range from 60 N/particle to 200 N/particle, and{'sub': 2', '3, '5) a content of α-AlOhigher than 70 wt % based on the total weight of the carrier.'}5. A method of preparing the α-alumina carrier of claim 1 , comprising the steps of:I) preparing a mixture comprising components of: a) trihydrate ...

Alumina carrier, method of preparing the same, and silver catalyst.

Alumina carrier, method of preparing the same, and silver catalyst

The present disclosure discloses an a-alumina carrier, comprising the elements of lanthanum and silicon both dispersed in the interior and on the surface of the carrier. The mass ratio of the element of lanthanum to the element of silicon is in the range from 0.1:1 to 20:1. The inventors of the present disclosure have made extensive researches into the field of the silver catalyst and alumina carrier thereof, and added the elements of lanthanum and silicon (i.e., bulk phase addition) in preparing the alumina carrier used in the silver catalyst. The carrier thus obtained contains the elements of silicon and lanthanum both in the interior and on the surface thereof, and has improved specific surface area and strength. The silver catalyst prepared with the carrier can react in a low reaction temperature (has a high reaction activity) and has a high selectivity in producing ethylene oxide through oxidation of ethylene.

Fxr small molecule agonist and preparation method therefor and use thereof

An FXR small molecule agonist and a preparation method therefor and a use thereof, having a structure as shown in formula (I). The compound represented by formula (I) has FXR agonistic activity and is capable of preparing drugs for treatment of FXR-related diseases.

Fxr small-molecule agonist, and preparation method therefor and use thereof

A strong FXR small-molecule agonist, and a preparation method therefor and use thereof, the structure of the agonist being represented by formula (I), are provided. In the formula, each substituent is as defined in the description and the claims. The compound provided has the advantages of high FXR agonist activity, simple synthesis, easily available raw materials and the like, and can be used for preparing medicines for treating FXR related diseases.

Fxr small molecule agonist and preparation method therefor and use thereof

Agonista de molécula pequena de fxr e método de preparação para o mesmo e uso do mesmo

agonista de molécula pequena de fxr e método de preparação para o mesmo e uso do mesmo. um agonista de molécula pequena de fxr e um método de preparação para o mesmo e um uso do mesmo, tendo uma estrutura conforme mostrada na fórmula (i). o composto representado pela fórmula (i) tem atividade agonística de fxr e é capaz de preparar fármacos para tratamento de doenças relacionadas a fxr.

Movable construction waste processing equipment

Class of quinoline compounds, preparation method therefor, pharmaceutical composition and use thereof

Provided in the present invention are a class of quinoline compounds and a preparation method therefor, a pharmaceutical composition and the use thereof. Specifically, provided in the present invention are a compound as shown in formula (I), and a stereoisomer, a deuterated compound, a solvate, a metabolite, a pharmaceutically acceptable salt, a eutectic or a prodrug thereof, and a pharmaceutical composition thereof. Further provided in the present invention are a preparation method for the compound and the use thereof in the preparation of a drug for treating diseases mediated by thyroid hormone receptors. Related diseases include, but are not limited to, diseases such as non-alcoholic fatty liver diseases, atherosclerosis, coronary heart disease, hypertension, hypercholesterolemia, hyperlipidemia, hypertriglyceridemia, dyslipidemia, obesity, diabetes, metabolic disorders, lipid metabolism disorders, 1A type glycogen storage diseases, hypothyroidism or thyroid cancer.

Fxr small-molecule agonist, and preparation method therefor and use thereof

Information processing method and electronic device

The present disclosure provides an information processing method and an electronic device. The method comprises: obtaining an audio signal in an output signal; determining N channel signals in the audio signal, where N is a positive integer; determining whether the audio signal needs to be adjusted or not; and adjusting, when the audio signal needs to be adjusted, an output parameter of at least one of the N channel signals respectively, and outputting the N adjusted channel signals via an audio output device, such that the N adjusted channel signals correspond to a sound source position of the audio signal. The above method according to the present disclosure can solve the technical problem that the audio signal cannot be adjusted in real time and achieve a technical effect of automatic adjustment of the audio signal.

Alumina carrier, method of preparing the same, and silver catalyst

The present disclosure discloses an α-alumina carrier, comprising the elements of lanthanum and silicon both dispersed in the interior and on the surface of the carrier. The mass ratio of the element of lanthanum to the element of silicon is in the range from 0.1:1 to 20:1. The inventors of the present disclosure have made extensive researches into the field of the silver catalyst and alumina carrier thereof, and added the elements of lanthanum and silicon (i.e., bulk phase addition) in preparing the alumina carrier used in the silver catalyst. The carrier thus obtained contains the elements of silicon and lanthanum both in the interior and on the surface thereof, and has improved specific surface area and strength. The silver catalyst prepared with the carrier can react in a low reaction temperature (has a high reaction activity) and has a high selectivity in producing ethylene oxide through oxidation of ethylene.