266 results about "Loading ratio" patented technology

The present invention provides a dispersant and foaming agent combination that is useful in the production of gypsum wallboard and other aqueous cementitious products, a method of forming a gypsum wallboard and a gypsum wallboard. The dispersant in the combination according to the invention is a naphthalene sulfonate-aldehyde condensate alkali salt polymer having a weight average molecular weight of from about 17,000 to about 47,000. The alkali is preferably an alkali metal and / or an alkaline earth metal. The aldehyde is preferably formaldehyde. The foaming agent used in the combination according to the invention is a soap, preferably an alkali salt of an alkyl ether sulfate and / or an alkyl sulfate. The combination of a high molecular weight dispersant and a foaming agent produces a gypsum wallboard core effect that more efficiently entrains air (i.e., creates void space), thereby lowering overall board weight without detrimentally affecting strength. A gypsum wallboard formed using the dispersant and foaming agent combination according to the invention exhibits a higher nail pull value than gypsum wallboard formed using a conventional dispersant and a foaming agent at the same solids loading ratio.

The present invention is directed to the upgrading of heavy hydrocarbon feedstock that utilizes a short residence pyrolytic reactor operating under conditions that cracks and chemically upgrades the feedstock. The method for upgrading a heavy hydrocarbon feedstock comprises introducing a particulate heat carrier into an upflow reactor, introducing the heavy hydrocarbon feedstock into the upflow reactor at a location above that of the particulate heat carrier so that a loading ratio of the particulate heat carrier to feedstock is from about 15:1 to about 200:1, allowing the heavy hydrocarbon feedstock to interact with the heat carrier with a residence time of less than about 1 second, to produce a product stream, separating the product stream from the particulate heat carrier, regenerating the particulate heat carrier, and collecting a gaseous and liquid product from the product stream.

The present invention is directed to the upgrading of heavy hydrocarbon feedstock that utilizes a short residence pyrolytic reactor operating under conditions that cracks and chemically upgrades the feedstock. The process of the present invention provides for the preparation of a partially upgraded feedstock exhibiting reduced viscosity and increased API gravity. This process selectively removes metals, salts, water and nitrogen from the feedstock, while at the same time maximizes the yield of the liquid product, and minimizes coke and gas production. Furthermore, this process reduces the viscosity of the feedstock in order to permit pipeline transport, if desired, of the upgraded feedstock with little or no addition of diluents. The method for upgrading a heavy hydrocarbon feedstock comprises introducing a particulate heat carrier into an upflow reactor, introducing the heavy hydrocarbon feedstock into the upflow reactor at a location above that of the particulate heat carrier so that a loading ratio of the particulate heat carrier to feedstock is from about 15:1 to about 200:1, allowing the heavy hydrocarbon feedstock to interact with the heat carrier with a residence time of less than about 1 second, to produce a product stream, separating the product stream from the particulate heat carrier, regenerating the particulate heat carrier, and collecting a gaseous and liquid product from the product stream. This invention also pertains to the products produced by the method.

The invention discloses a method and a system for balancing dynamic load based on a distributed SIP architecture. The system comprises a user side, DNS, a database and a plurality of SIP servers for dynamically registering information thereof to the database. The method for balancing the dynamic load comprises the following steps: maintaining a real-time service state list for the SIP servers in the database, wherein, the service state list comprises an SIP server address, a working state and a load rate; and initiating a call to the registered SIP servers by the user side, processing the signaling if the servers are idle, otherwise re-directing the signaling to other available idle servers for processing. By the invention, the burden for processing SIP information can be equally shared by each server, and the bottleneck of the system caused by that all signaling passes through the same balance server is avoided. The system can dynamically adapt to participation and departure of the SIP servers, thus improving reliability and self adaptability of the system.

The utility model discloses a method for controlling a power-supply system and a device thereof, aiming at solving the problem of weak real-time performance of the power-supply system in the prior art. The method of the invention comprises: according to the current load current and the battery charge current value of the power-supply system, the current load factor of a rectifier module which is put into service is calculated by a computing module; when the load factor exceeds load factor range corresponding to the desired value of the operating efficiency in the power-supply system, the number of the rectifier modules which are put into service is determined by a determination module when the load factor of the rectifier modules is within the load factor range according to the load current and the battery charge current value; a control module controls the rectifier module to open and close, so as to lead the number of the rectifier modules which are put into service is the same as that of the calculated rectifier modules. By adopting the technical proposal of the invention, the number of the rectifier modules which are put into service can be regulated to be the number of the determined rectifier modules, and the power-supply system can work with better efficiency all the time, thus realizing the effect of saving energy and improving the real-time performance of energy-saving control.

The invention relates to an implementation method of cross-layer routing capable of perceiving congestion, which is suitable for the implementation of a routing protocol of a wireless Mesh network. The method provides two quality messages which are obtained from an MAC layer and can perceive the congestion condition of the network for a network layer through a cross-layer design: an expectation transmission success rate for perceiving link congestion and a residual load rate for perceiving node congestion. The expectation transmission success rate and the residual load rate of a path can be obtained through a routing discovery process, the two path quality messages are integrated so as to form a routing decision function, and routing is decided according to the routing decision function. The invention solves the problems that a network service load cannot be effectively balanced in the wireless Mesh network, and the fairness of the transmission of multiple traffic streams is poor.

The invention relates to a method for preparing drug-loading nanocomposite through ball-milling modification of mineral soil and blending modification. A preparation method of a novel controlled-release pesticide high-load rate carrier is characterized by comprising the steps of 1) performing ball-milling modification on montmorillonite and kaolin respectively by taking hexadecyl trimethyl ammonium bromide and hydrogen-containing silicone oil as modifiers, and mixing the modified montmorillonite and kaolin at certain proportion; 2) dissolving acetamiprid with water and performing ultrasonic dispersion, and loading the suspension of acetamiprid to the modified mineral soil through a 'negative pressure-freeze-drying method'; and (3) mixing and stirring a sodium alginate solution and the drug-loading mineral soil to obtain a sol system, and dripping the sol system into a chitosan-containing calcium chloride gelling agent by using an injector, and performing crosslinking to obtain alginate / mineral soil / chitosan drug-loading nanocomposite pellets. By using the film forming property of chitosan and the characteristics of the modified mineral soil, the system provided by the invention improves the stability and drug loading ratio of material, and also can adjust the release of drug and improve the mechanical strength. The novel controlled-release pesticide carrier provided by the invention can reduce influence of the environmental factors such as leaching, evaporation, degrading and the like, prolongs the duration of pesticide effect, and reduces the application amount of agricultural pesticide.

The present invention is a catalyst for use in a fuel electrode of a polymer solid electrotype fuel cell which is formed by making a carbon powder support platinum and ruthenium thereon, and is characterized in that the loading ratio between platinum and ruthenium is from 1:2.5 to 1:4 (in molar ratio). It is preferable that the loading density of the catalyst is 40 to 70%. Additionally, it is preferable that a carbon powder having a specific surface area of 600 to 1,200 m2 / g is used as the carrier supporting the catalyst particles.

The invention belongs to the technical field of mobile communication and relates to a message broadcast-oriented MAC (Media Access Control) layer improving method in an VAENT (Vehicular Ad-hoc NETwork). For a stream media message, an RTB / CTB (request-to-broadcast / clear-to-broadcast) mechanism is used to select a relay vehicle; an ARC-SMB (Adaptive Rate Control-Streaming Media Broadcasting) method is provided in order to guarantee the smoothness of receiving stream medium data by a user; according to a detected channel transmitted data frame state, a broadcast vehicle adjusts data transmitting speed, so that the packet loss rate is reduced; the concept that the user manually adjusts the quality required by a stream media is provided in order to improve the user experience. The state of broadcasting a safety message in an actual environment is simulated, so that the vehicle acquires better delivery rate, single-hop delay is reduced, and the load rate is reduced; the broadcasting state of the safety message in the actual environment can be simulated by the ARC-SMB method, so that the vehicle acquires better delivery rate, the packet loss rate is reduced, and more smooth stream media transmission is provided for the user.

The present invention is directed to the upgrading of heavy hydrocarbon feedstock that utilizes a short residence pyrolytic reactor operating under conditions that cracks and chemically upgrades the feedstock. The process of the present invention provides for the preparation of a partially upgraded feedstock exhibiting reduced viscosity and increased API gravity. This process selectively removes metals, salts, water and nitrogen from the feedstock, while at the same time maximizes the yield of the liquid product, and minimizes coke and gas production. Furthermore, this process reduces the viscosity of the feedstock in order to permit pipeline transport, if desired, of the upgraded feedstock with little or no addition of diluents. The method for upgrading a heavy hydrocarbon feedstock comprises introducing a particulate heat carrier into an upflow reactor, introducing the heavy hydrocarbon feedstock into the upflow reactor at a location above that of the particulate heat carrier so that a loading ratio of the particulate heat carrier to feedstock is from about 15:1 to about 200:1, allowing the heavy hydrocarbon feedstock to interact with the heat carrier with a residence time of less than about 1 second, to produce a product stream, separating the product stream from the particulate heat carrier, regenerating the particulate heat carrier, and collecting a gaseous and liquid product from the product stream. This invention also pertains to the products produced by the method.

The invention discloses a method for preparing folic acid coupled acetyl pullulan polysaccharide and the nanoparticles thereof, a preparation of drug-loaded nanoparticles which take the compound as the carrier and the role of the drug-loaded nanoparticles on the tumor cells. Firstly, the water soluble pullulan polysaccharide is converted to hydrophobic polymers by acetylation, so as to be conductive to the preparation of the nanoparticles and the loading of a hydrophobic drug, and the tumor cells with the high expression of the folate receptor can be targeted after the coupling of the folic acid by esterification. The drug-loaded nanoparticles are prepared by taking epirubicin as a model drug and adopting the solvent dispersion method, and the role of the drug-loaded nanoparticles on the tumor cells are evaluated by the in vitro cell uptake test. The results show that the method for preparing the folic acid-acetyl pullulan polysaccharide nanoparticles by the solvent dispersion method is simple, the reproducibility is good, the expanded production is easy, the drug-loading ratio is high, and the drug-loaded nanoparticles can be taken into the tumor cells by the route of the folate receptor.

The invention provides a method for performing state control on a redundant power module. The redundant power module comprises at least two independent power supplies, and presets a first load rate threshold value and a second load rate threshold value, wherein the first threshold value is lower than the second threshold value. The method comprises the following steps of: A, detecting the currentoutput load conditions of the redundant power module in real time, and calculating a current load rate; and B, comparing the current load rate with the first load rate threshold value and the second load rate threshold value, dynamically regulating the state of the redundant power module according to comparison results, and specifically, switching one or more power supplies off when the load rateof equipment is lower than the first load rate threshold value, starting the one or more power supplies when the load rate of the equipment is higher than the second load rate threshold value and keeping the states of the power supplies invariable when the load rate of the equipment is between the first and second load rate threshold values. The invention also provides a device for performing thestate control on the redundant power module.

The present invention provides an antineoplastic drug with ferritin as a carrier and a preparation method thereof, the method comprising the following steps: preparing ferritin; performing high pressure treatment on a mixed solution of ferritin and antineoplastic drug at a pressure of 200-800MPa6 ‑20h; the product after high pressure treatment is separated and purified to obtain an anti-tumor drug with ferritin as a carrier. The method of the present invention can not only increase the loading ratio of drugs, the yield of drug-loaded ferritin is close to 100%, but also can completely recover free unloaded anti-tumor drugs, improve production efficiency, reduce production costs, and is suitable for large-scale industrial production .

This invention discloses an inverse time-lag protective method for heat overload of AC electric motor based on heat accumulation. The steps are as below: obtaining three phase load current; calculating the active current and load factor of every phase; calculating all the ideal action points corresponding the load factors, and heat accumulation coefficients between the action points; calculating, respectively, the increments of heat accumulation of the motor within an established time interval, and the heat accumulation value at that time; comparing said value with the determined triggering action value to judge if the triggering of the trigger relay is needed or not. In this invention, sectional linearized TC value obtaining is used, so it can accurately simulate the heat overload of an electric motor.

The invention discloses a swelling-type hollow silk fibroin micro-needle drug delivery system and a preparation method thereof. According to the technical scheme of the preparation method, a swelling modified silk fibroin solution is casted in a PDMS mold to be vacuumized, dried and molded as a hollow needle-type housing. After that, a silk fibroin micro-needle array provided with cavities in the hollow needle-type housing is filled with powder-like or solution-like drugs, vacuumizing and drying are carried out to form a drug part. Finally, a layer of modified silk fibroin solution is cast, dried and molded as a cladded coating. The cladded coating is removed to obtain the swelling-type hollow silk fibroin micro-needle drug delivery system. The drugs are wrapped inside the cavities of the silk fibroin micro-needle arrays, so that the system is high in drug loading ratio and low in skin allergenicity and stimulation. The system facilitates the sustained release and the controlled release of micro-needle drugs. Meanwhile, according to the preparation method, since the swelling modified silk fibroin solution is cast, dried and molded in a mild processing condition, the system is low in processing cost and suitable for large-scale production. Drugs are directly wrapped in the cavities of the swelling hollow micro-needles, so that controlled-release drugs are swelled in the micro-needle base material. In this way, the biological activities of the controlled-release drugs are maintained, while the structure of the hollow silk fibroin micro-needle drug delivery system is greatly simplified. The system is better in practicality.

Belonging to tensile loading technologies, the invention in particular relates to a loading method for two-way tensile test. The loading method for biaxial tensile test provided by the invention makes use of a lever principle to decompose a one-way load into two-way loads through an annular load decomposer, then the two-way loads are loaded onto a test piece so as to realize two-way loading of two-way tensile test. The force transfer points of the load decomposer can be adjusted according to an actual loading ratio to meet the requirements of any load ratio, thus realizing synchronous two-way loading of the test piece. The synchronization problem does not exist in the loading system. At the same time, by changing the size of annular structures, two-way loading on large test pieces can be conducted, and the method also can be used for static and fatigue test. In addition, the annular load decomposer involved in the invention has a simple structure, the method occupies fewer test resources, and is low in cost, thus having great practical application value.

The invention relates to a method for aggregating power system induction motor load dynamic parameter, belonging to technical field of power system dynamic equivalent value and load modeling, the method is realized by capacity weighting method considering the load factor and the critical slip (maximum torque corresponding slip), the realized system comprises electric network data aquisition and induction motor group parameter aggregation. The obtained dynamic parameter of the power system induction motor load model is used for computing for transient state stable simulation. The detailed model parameter of the power system equivalent value induction motor load model obtained by the invention can not only improve precision of the parameter aggregation, but also can not increase computing load.

The invention provides an overload proof power battery charging-discharging monitoring control method. The method comprises the following steps: calculating the temperatures of a battery to be testedand the extreme current charging / discharging rates at different SOCs (Systems on Chip) according to a voltage change ratio; determining different temperatures and charging / discharging voltage upper limits at different SOCs according to the maximum current charging / discharging ratio; judging whether failure duration exceeds a preset unexpected duration or not by taking the current charging / discharging ratio under each temperature as an overload current threshold value, and the charging voltage upper limit and discharging voltage lower limit at different temperatures and different SOCs as battery aging failure threshold values, and transmitting an alarm signal; and calibrating the power battery capacity after aging, and calculating a charging voltage upper limit and a discharging voltage upper limit under the current battery capacity. The maximum current loading ratio and voltage working range are taken as monitoring objects of the whole battery system in working, so that the overload proof power battery charging-discharging monitoring control method has the advantages of convenience in operation, high reliability, easiness in judging the working state, recognition of the failure type, and improvement on the system feasibility and reliability.

A CAN controller, which is connected to a communication bus constituting a network mounted on a vehicle, transmits and receives communication messages to and from the network. The CAN controller comprises a bus load measurement unit that calculates a bus load rate of the network on the basis of receiving communication messages flowing through the network for a measurement time period established for a bus load rate calculation. Further, the bus load measurement unit determines, on the basis of the calculated bus load rate, whether the load of the network is heavy or light. The CAN controller also comprises a CAN protocol engine that voluntarily restricts the transmission of communication messages on the basis of a result of the determination by the bus load measurement unit to the effect that the load is heavy.

The invention discloses a network selection method based on a Q-learning algorithm. The network selection method includes the steps of (1) initializing a Q value table and setting a discount factor gamma and a learning rate alpha; (2) determining a business type k and load rates of two current networks when a set time is up so as to obtain a current state sn; (3) selecting a useable action from anaction set A and recording such action as well as next network state sn+1; (4) computing an immediate return function r according to the network state after the selected action is implemented; (5), updating a Q value function Qn (s, a), and gradually decreasing the learning rate alpha to 0 according to rules of an inverse proportional function; (6), repeating the steps (2)-(5) until Q values areconverged, in other words, a difference value of the Q values before and after updating is smaller than a threshold value; (7) returning to the step (3) to select the action and accessing to an optimal network. The network selection method based on the Q-learning algorithm is capable of decreasing a voice business block rate and a data service packet loss rate and increasing average network throughout.

The invention discloses a cell-gel material composite microsphere as well as a preparation method and an application thereof and belongs to the field of biomedical materials. The cell-gel material composite microsphere is prepared from a gel microsphere and cells distributed in the gel microsphere. The preparation method comprises the following steps: dispersing a gel material-cell mixed solution in an oily solution, and carrying out emulsification and gelation treatment to obtain the cell-gel material composite microsphere. The cell-gel material composite microsphere is controllable in cell loading ratio, high in cell survival rate, small in volume shrinkage, difficult in breaking, good in transmitting capability of nutrients and metabolites, simple in preparation method and convenient in popularization and application and can also be used for preparing nonhomogeneous hydrogel so as to obtain a material with high biomimetic degree.

The invention provides a flexible interconnection system between transformer station low voltage buses and a control method thereof; the system comprises a plurality of transformers and a multi-port flexible interconnection device; the transformers are arranged in the system transformer station; the adjacent transformer outlet buses are connected with the multi-port flexible interconnection device so as to realize multi-bus flexible interconnection. The system aims at the plurality of adjacent buses on the transformer outlet side in the same transformer station, and uses the multi-port flexible interconnection device to replace a buscouple switch, thus realizing the multi-bus flexible interconnection; the power electronic equipment controllability is employed to realize multi-bus trend interactions. The system and method can realize multi-bus parallel operations without increasing short circuit currents, thus improving the new energy local absorptive ability, improving the inter-bus load balancing level, improving the transformer load rate, reducing the transformer basic capacity, improving the power supply reliability, and improving the electric energy quality through proper control.

The invention relates to the field of cluster deployment, and provides a cluster resource scheduling method, a node, equipment and a storage medium. The method comprises the steps of collecting stateinformation of each slave node in a cluster, analyzing the state information of each slave node, calculating the longest response duration of each slave node according to the state information of eachnode, determining the current load state of each slave node according to the longest response duration, and dividing a starting level for each slave node according to the load state of each slave node; and according to the load state of each slave node and the starting level of each slave node, selecting the slave node with a load lower than a preset load rate as a working node, and sending an operation instruction to the working node to enable the working node to execute the operation instruction. By adopting the scheme, the load difference of the cluster nodes can be reduced, the load balance is realized, the execution efficiency of executing services by the nodes is effectively improved, and the performance of the cluster is improved.

The invention discloses an access control method of a wireless communication network. The method comprises the following steps: presetting the upper limit and lower limit of the system capacity of a cell base station, wherein the upper limit is lower than the full load value of the system capacity of the cell base station, and the lower limit is higher than the no-load value of the system capacity of the cell base station; acquiring the service access request of the current cell, distributing a corresponding priority for the service access request according to the attribute of the request; acquiring the system load rate of the current cell base station; accessing the service access request in the current cell if the system load rate of the current cell base station is lower than the lower limit of the system capacity; and accessing the service access request in the current cell when the service access request has a high priority and the system load rate of the current cell base station is higher than the lower limit of the system capacity and lower than the upper limit of the system capacity. The method can be used to improve the effective utilization efficiency of the wireless system capacity, improve the communication service quality, and optimize the overall performance of the wireless communication network.

The invention relates to a dynamic section control method based on a power flow transfer ratio. The method comprises the following steps: switching off each branch one by one, detecting the load rates of branches which are not switched off gradually, judging whether or not the load rates of certain branches in the branches which are not switched off are greater than a preset load rate threshold value, and if so, selecting corresponding switch-off branches as key branches; calculating the power flow transfer ratio of each branch with a direct-current power flow algorithm; judging whether or not the power flow transfer ratios of the branches are greater than a preset power flow transfer ratio threshold value, if so, selecting the branches for serving as strong correlation branches, wherein the strong correlation branches and the key branches construct a power transmission section; acquiring a dynamic ultimate expression of the power transmission section according to the power flow transfer ratios, load fluctuating power, rated active power and a generator switchable amount or a load switchable amount; and controlling section power flow according to a power transmission distribution factor and the dynamic ultimate expression of the power transmission section. The dynamic section control method is suitable for the complex change of a power grid running way, accurate in results, small in calculation amount, convenient and practical.

The invention provides a combined tension-torsion multi-axis fracture experimental system. The experimental system comprises a dynamic tension-torsion testing machine and a control device connected with the dynamic tension-torsion testing machine. The dynamic tension-torsion testing machine has an upper chuck, a lower chuck and a force sensor, and is clamped with a sample through the upper chuck and the lower chuck. The sample is a thin-walled tube with a notch, and is provided with a speckle. A deformation measurement system comprises a non-contact three-dimensional strain optical measurementsystem connected with the control device through a synchronous trigger device which comprises two cameras connected with the synchronous trigger device and an image acquisition and data processing device connected with the two cameras respectively. The invention also provides a combined tension-torsion multi-axis fracture experimental method. The invention adopts a sample of a thin-walled tube with a notch, which can obtain a low-stress triaxial level and different Rhodes parameter levels by changing different combined tension-torsion loading ratios. In addition, since the experimental systemcomprises a non-contact three-dimensional strain optical measurement system, measurement of full field strain can be achieved.

The invention discloses an optimized dispatching method for improving the load rate of a power distribution network, aiming at improving the load rate. The method comprises the following steps of building a power supply model of a power distribution network based on an index system of the power distribution network for evaluating the power supply capability, deriving a method for computing the load rate of the power distribution network, and adopting corresponding measures from an optimized running mode under the constraint conditions that the N-1 running mode is met, the power supply reliability is not lower than 99.99%, and the voltage qualified rate is not lower than 99.99% to improve the whole load capacity of the power distribution network. According to the optimized dispatching method for improving the load rate of the power distribution network disclosed by the invention, the phenomena that the whole load rate is not high and is not balanced commonly existed in the domestic power distribution network can be solved, and the power supply reliability and the voltage qualified rate can be improved as well.

The invention provides a clay load palladium catalyst and a preparation method thereof and relates to a high-efficiency catalyst taking oxygen as an oxygen source and preparing aldehyde by alcohol selective oxidation. The catalyst comprises organic clay carrier load palladium, wherein the weight percent content of the Pd in the catalyst is 0.1% to 5%. An adsorption method is adopted to carry out preparation, and a quaternary surfactant in the organic clay can specifically and rapidly adsorb a palladium precursor body PdCl4. The adsorption method has controllable load rate of the palladium and high metal dispersion degree, and the obtained catalyst has the advantages of high catalytic activity, simple preparation technology and the like. A solvent-free reaction is carried out, and the transformation frequency (TOF) for transforming benzyl alcohol into benzaldehyde is commonly higher than 1000h and can reach 6800h under a proper condition. By repeated use for many times, the transformation rate of the benzyl alcohol and the selectivity of the benzaldehyde are not reduced obviously.

The uninterruptible power supply apparatus comprises an AC switch for turning on / off the AC power that is input from a commercial AC power source; a storage battery; a power conversion device; a load device connected to the output end of the AC switch; an output AC voltage detection unit for detecting an output AC voltage that is output from the AC switch; and an abnormality detection circuit for detecting that the detected output AC voltage is outside predefined upper and lower limits; wherein said AC switch turns off in accordance with a signal detected by said abnormality detection circuit. Further comprises a restoration circuit for generating a restoration signal when the AC voltage detected by an input AC voltage detection unit exceeds at least a lower-limit AC voltage setting that is increased gradually or continuously in accordance with a load factor computed by a load factor computation circuit.