45 results about "Equilibrium time" patented technology

The invention discloses a headspace gas chromatography method for determining the residual quantity of an organic solvent in a glycine bulk drug. The method is implemented under conditions that a DB-624 capillary column and a hydrogen flame ionization detector are used, sample inlet temperature is 150 DEG C, the detector temperature is 250 DEG C, high purity nitrogen is taken as carrier gas with flow rate being 2.2 mL/min, the split ratio is 10:1, headspace heating temperature is 80 DEG C, and equilibrium time is 35 min; besides, glycine is easily soluble in water and the 12 solvents are soluble in water to a certain degree, so that an aqueous solvent is adopted. The method can be used for simultaneously determining the residual quantity of the 12 organic solvents including methanol, ethanol, acetone, isopropanol, acetonitrile, dichloromethane, n-propanol, ethyl acetate, tetrahydrofuran, cyclohexane, n-butanol and toluene in the glycine bulk drug, has the characteristics of being easyto operate, quick, sensitive and accurate in result, and provides reference for effectively controlling the quality of the glycine raw material and ensuring medication safety.

The invention provides a nondestructive equilibrium management system of a modular high-power battery pack. The system comprises an equilibrium charging/discharging module, a battery parameter acquisition module and a microprocessor, wherein the equilibrium charging/discharging module is connected with the battery pack to charge or discharge battery cells required to be equilibrated in the battery pack; the battery parameter acquisition module acquires battery information of each battery cell in the battery pack; and the microprocessor is used for receiving the battery information of the battery parameter acquisition module, judging a charge state of each battery cell according to the acquired battery information, determining the battery cells required to be equilibrated and the equilibrium time according to the acquired battery information if a preset threshold is exceeded, and controlling the equilibrium charging/discharging module to charge or discharge the battery cells required to be equilibrated according to the battery cells required to be equilibrated and the equilibrium time. According to the nondestructive equilibrium management system, the flow of energy between the battery cells is realized in a centralized management mode to finish an equilibrium management function, and dynamic online nondestructive equilibrium is implemented through charging, discharging or standing of the equilibrium charging/discharging module to the battery cells so as to finish nondestructive equilibrium management of the battery pack.

The invention relates to an ovarian large cortex piece vitrified cryopreservation protection liquid and a cryopreservation method thereof. Although the vitrified cryopreservation method is widely applied to experimental animals, a universal cryopreservation method and a standard cryopreservation liquid preparation scheme are absent at present, so that the sized transplantation subjected to vitrified cryopreservation is at a small-size stage, an ovarian small cortex piece has limited follicles, and the service life of the transplanted follicles is influenced. The invention provides vitrified cryopreservation protection liquid suitable for an ovarian large cortex piece, and gonadotropin is added on the basis of the common vitrified liquid. According to the vitrified cryopreservation protection liquid suitable for the ovarian large cortex piece, especially the ovaries of experimental animals, improved variety livestock and wild endangered species in sudden death are conveniently cryopreserved at the most proper osmotic equilibrium time of performing vitrified cryopreservation on the ovarian large cortex pieces of different sizes; and moreover, according to the method, the survival rate of the follicles can be improved, the blood reperfusion time of the transplant is shortened, and the survival rate of the cryopreserved ovarian transplantation in vivo is improved.

The invention discloses a method for determination of pesticide residues in vegetable oils, and the method includes (1) sample treatment; (2) preparation of a standard solution; (3) chromatographic conditions: a Restek C18 chromatographic column, column temperature of 35 DEG C, equilibrium time of 5min, injection volume of 10 muL, flow rate of 0.5mL / min, mobile phases comprising A 10mMol ammonium acetate aqueous solution and B 10mMol ammonium acetate methanol solution; (4) mass spectrometry conditions: an electrospray ion (ESI) source, positive ion scan, a programmed multiple reaction monitoring mode, curtain gas of 15L / min, GS1 atomization gas of 60L / min, GS2 auxiliary heating gas of 70L / min, a medium CAD (collision-activated dissociation) collision gas, auxiliary heating gas temperature of 500 DEG C and spray voltage of 5000v. The high throughput detection method for variety of pesticide residues in three commonly used vegetable oils comprising olive oil, palm oil and peanut oil is established and is used for quality control of the vegetable oils.

The invention discloses alkali-modified pig manure biochar and a preparation method and application thereof. The preparation method of the alkali-modified pig manure biochar comprises: (1) pyrolyzingpretreated pig manure in nitrogen at 300-700 DEG C, during which the temperature increasing rate is 8-12 DEG C/min and the pyrolysis time is 2 h-4 h, and performing cooling, crushing and sieving to obtain pig manure biochar; (2) mixing the biochar with potassium hydroxide solution, stirring the mixture for reaction at a reaction temperature of 90-100 DEG C and a stirring speed of 867-1300 r/min for 12 h-24 h, and then performing filtering, washing and drying to obtain the alkali-modified pig manure biochar. The alkali-modified pig manure biochar is large in specific surface area and pore area,greatly shortens the absorption equilibrium time, achieves high capacity of removing lead in waters, and meanwhile, is simple in preparation process and low in cost and has a broad application prospect.

The invention relates to the field of electric power technology, in particular to a battery pack equalizing charging circuit and its control structure. Based on the above equalization structure, when the voltage of individual battery cells is too low, the inverter module is used to charge the low-voltage battery unit, and then the chopper module is used to charge the whole to complete the key task of balancing. When it is high, use the chopper module to transfer the power of the high-voltage battery unit to other low-voltage battery units, and then use the inverter module to charge and discharge the whole to achieve balanced charging. Through the balanced structure of this scheme, the two modules are combined with each other The synergistic effect reduces the equalization time and at the same time ensures the equalization accuracy, avoids the unfavorable situation that a single equalization module cannot adapt to various unbalanced situations, and realizes the improvement of the equalization function and effect.

A supergravity extraction separation couple device and its application are provided. A supergravity mixing unit and an extraction separation unit are simultaneously arranged, the supergravity mixing unit first disperses at least one of that light phase fluid and the heavy phase fluid into micro-nano scale droplet, and mixes the two fluids to form an extraction mixed fluid, the contact area of thetwo-phase fluid is increased, on the other hand, the light phase fluid and the heavy phase fluid in the extraction mixture fluid are separated by centrifugation in the extraction separation unit, thedispersion of one phase and the mixing efficiency between the two phases are improved, and the extraction equilibrium time is shortened, and moreover the centrifugal force generated by a driving motorin the supergravity mixing unit can simultaneously act on the extraction separation unit, on the one hand, the separation time is shortened, on the other hand, the power consumption is saved, and theenergy utilization rate is improved.

The invention discloses a method for analyzing a residual solvent in an explodable bead of a cigarette filter based on the HS-GC (head space-gas chromatography)/MS (mass spectrometry) technology. The method is characterized in that after a sample is pinched to be broken by an external force, a matrix correction agent and an internal standard into a head space bottle, a cover is applied for sealing, and the HS-GC/MS method is used for measuring the residual solvent in the explodable bead of the cigarette filter under certain equilibrium temperature and certain equilibrium time. According to the method, unknown ingredients contained in the sample can be monitored while the residual solvent in the explodable bead of the cigarette filter is simply and quickly detected. The universality is wide, the expandability is strong, the detection result is accurate, the repeatability is good, the pre-treating process is simple, and easy operation, high throughout and low cost are realized.

The invention discloses a vitrification freezing observing device. The vitrification freezing observing device comprises a vertical microscope, an isolation box and a culture dish; the vertical microscope is connected with a shooting device and used for observing and shooting; the hollow part of the isolation box is shaped like a cylinder, and the isolation box is arranged on a containing table of the vertical microscope and used for bearing observation materials and passing light rays below the containing table of the vertical microscope; the culture dish is arranged in the hollow part of the isolation box and used for containing the observation materials. When the vitrification freezing observing device is applied to optimal liquid glass screening and structure equilibrium time optimization, vitrification states of different liquid glass in the rapid freezing and remelting process and surface area changes of structure in the liquid glass in the equilibrium process can be conveniently observed, initial glassy state screening and optimization and determining of structure equilibrium time are completed, the advantages of being rapid, easy and convenient are achieved, and invalid work is greatly reduced.

The invention relates to a TDS-OFDM receiving device using different equalizing methods according to channel status and a equalizing method, which comprises: a synchronous unit which is used to enable the OFDM signal according to the receiving of the antenna, transformation to baseband and the analog-digital conversion to be synchronous; a demultiplexer which is used to decompose the OFDM signal received from the synchronous element to a plurality of signals comprising the synchronous information and the OFDM code elements; a time domain equilibrium element which is used to use the OFDM code elements in the synchronous information equilibrium time domain; a first FFT unit which is used to transform the correlation of the synchronous information by the FFT; a second FFT unit which is used to transform the OFDM code elements by the FFT; a frequency domain equilibrium unit which is used to use the correlation of the synchronous information transformed in the first FFT unit to balance the OFDM code elements transformed in the second FFT unit; and a channel state confirmation unit which is used to calculate the correlation of the synchronous information to estimate the channel state, and choose one of the time domain equilibrium unit and the frequency domain equilibrium unit for equilibrium based on the estimated channel state. So the receiving function is improved by choosing one of the time and the frequency domain equilibrium units according to channel state.

The invention discloses a dynamic method for measuring surface property parameters of a substance. In the dynamic method, the surface property parameters of a liquid substance to be measured are obtained by processing the substance to be measured by electrolyte solution, measuring the activity of the liquid to be measured after reaction according to a set time interval and carrying out processingby a dynamic data processor and a surface property operation module in a detection system. According to the dynamic method, the ion exchange dynamic method is adopted to overcome the difficulties that in the measuring process, the reaction balance time is long, the balance is difficult to determine and the accurate calibration of an m value is difficult to implement; dynamic data obtained in short time is utilized to carry out accurate forecasting, so that the difficulties that the balance time is long and the balance is difficult to determine are overcome; five parameters of surface properties of the substance can be calculated only by two parameters, i.e. the intercept and the slope, of an equation of linear regression, which is obtained by the dynamic data; and meanwhile, after the dynamic method is adopted, the total quantity of surface charges can be directly measured.

The invention relates to the preparation and application of a lithium ion sieve with a three-dimensional macropore-mesoporous structure. The lithium-ion sieve uses polystyrene microsphere arrays as a template, and isopropyl titanate and anhydrous lithium acetate as titanium and lithium sources, and obtains titanic acid with a three-dimensional macroporous-mesoporous structure by infusion and calcination. Lithium 3DM‑Li4Ti5O12. Finally, 3DM‑Li4Ti5O12 was delithiated by acid leaching to obtain a three-dimensional macroporous‑mesoporous lithium ion sieve 3DM‑H4Ti5O12. The macropore structure in the lithium ion sieve is arranged regularly, and the pores are connected through mesopores, forming a three-dimensional macropore-mesopore structure in which the channels are interconnected. Compared with other materials, the unique pore structure of the lithium ion sieve is conducive to the entry of lithium ions into the pores from all directions, reducing the internal diffusion resistance of lithium ions, reducing the adsorption-desorption equilibrium time of lithium ions, and increasing the adsorption capacity of lithium ions. The above many advantages make the lithium ion sieve can be used as a good lithium adsorption material.

The present invention discloses a method and a structure of a temperature and humidity testing chamber for shortening the time of balancing high temperature and high humidity. A heater is fixed on a saturer inside the temperature and humidity testing chamber. When the workaround of the temperature and humidity testing chamber is want of higher humidity, the saturer is solely heated by the heater to increase the quantity of saturated moisture and then the saturated moisture is delivered to the workaround. The present invention resolves the problems that high temperature and high humidity take a long time to be balanced and even high temperature and high humidity can not be carried out. The heater is used to heat solely the saturated moisture that is brought about by the saturer, which can make the temperature and humidity of the workaround be up to the preset numerical value. In comparison with the testing chamber without the heater, the balance time can be shortened by 20-40 percent, and at the same time, the demand of high temperature and high humidity can be easily attained. Thus, the present invention has the advantages of expanding the scope of humidity test; shortening the balance time; and making the temperature and humidity testing chamber meet the demands of high temperature and high humidity.

The invention discloses a method for removing arsenic in water. According to the method, strong base anion exchange resin is used for removing arsenic in water; the molecular structural formula of the strong base anion exchange resin is shown in the specification, wherein n is more than or equal to 2. The method has the advantages of high arsenic removal rate, relatively high selectivity in the presence of certain co-existing ions, simple technological operation and facilitation of industrialization. The strong base anion exchange resin is wide in using pH range and relatively high in adsorption capacity under the condition that the pH value is 1-14. The strong base anion exchange resin is high in adsorption rate, short in equilibrium time, high in adsorption capacity and easy to regenerate and can be recycled.

The invention discloses uracil maleamic polyol ester and a preparation method and application thereof. The chemical formula of uracil maleamic polyol ester is as shown in the specification, wherein R1is H or CnH2n+1, R2 is H or CnH2n+1, R3 is CnH2n+1-x(OH)X, n=1-10, and X is greater than or equal to 3. The uracil maleamic polyol ester can effectively inhibit degradation and coloration of PVC, improve thermal stability of PVC, and enhance precipitation resistance of aminouracil. The plasticized peak torque reaches 18-26 Nm, equilibrium torque is 15.0-16.8 Nm, and equilibrium time is 28-35min.Meanwhile, the uracil maleamic polyol ester has good synergistic effect with a Ca-Zn heat stabilizer when being used as a PVC heat stabilizer. Thus, heat stability and precipitation resistance of PVCare further improved, and the heat stable temperature can reach 190-195 DEG C.

The invention relates to a method for synthesizing low-viscosity room temperature vulcanized methyl silicone rubber. According to the method, a dimethyl dichlorosilane concentrated-acid hydrolyzate istaken as a raw material to undergo a polycondensation reaction under action of a basic catalyst, the viscosity of the reaction material is monitored by a low-range online viscometer, a neutralizing agent is added after a target viscosity is reached, the reaction product is subjected to low-molecule removal treatment at a high temperature under vacuum, so that a low-viscosity room temperature vulcanized methyl silicone rubber product is obtained. According to the invention, on the basis of conventional viscosity room temperature vulcanized methyl silicone rubber production technologies, the method further makes the viscosity change of the reaction system one-way smooth by reducing the catalyst usage amount, lowering the reaction temperature condition, shortening the reaction equilibrium time, widening raw material loop ratio requirements and employing other technological means. The inorganic salt content of the catalytic system is reduced by 70% or more on year-on-year basis, the production efficiency is increased by 50% or more, the primary viscosity qualification rate reaches 95%, the product turbidity is 1.0 NTU or below, the Mw/Mn ratio is small and the hydroxyl value is high,and meanwhile, the dehydration process is optimized and product quality is stable.

The invention relates to a preparation method for a mixed hemimicelle solid-phase extraction agent based on dimercaptosuccinic acid modified ferroferric oxide magnetic nanoparticles. The preparation process mainly comprises the four steps of preparation of ferroferric oxide magnetic nanoparticles, preparation of the dimercaptosuccinic acid modified ferroferric oxide magnetic nanoparticles, preparation of the mixed hemimicelle solid-phase extraction agent and a solid-phase extraction process. The synthetic method provided by the invention is simple and convenient, target object separation can be achieved just through little absorbing agents and short equilibrium time in the extraction process, the extraction capacity is high, lots of toxic and harmful solvents do not need to be used, and environmental friendliness is achieved; and meanwhile, influences of complex matrix effects of environmental samples can be effectively reduced, and the method is quite suitable for the rapid analyzing requirement of trace PPCPs compounds in complex matrixes.