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30 results about "Solution structure" patented technology
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Solution structure. In a medium or large project, the structure of the team is based on the structure of the application. Each team uses a Visual Studio solution. Base the structure of your solutions on the structure of your application, such as web application, service application, or desktop application.
Method for simulating GPS signal dynamic receiving environment and system thereof
InactiveCN109343081ASimple calculationReduce complexityDesign optimisation/simulationSatellite radio beaconingAnalog signalEphemeris
The invention provides a method for simulating GPS signal dynamic receiving environment and a system thereof. The method comprises the following steps: reading satellite ephemerides and establishing asatellite motion model according to the current time; solving receiver carrier attitudes; calculating the incident direction of a satellite signal according to the receiver carrier attitudes and determining each visible satellite; calculating the transmission delay, the transmission error, the Doppler shift and the signal transmission error of the satellite signal; and generating an analog signal. The satellite motion model is established according to the satellite ephemerides, the receiver carrier attitudes are solved in the satellite motion model, and the incident direction of the satellitesignal is calculated by the solution structure of the receiver carrier attitudes. Finally, the transmission delay, the transmission error, the Doppler shift and the signal transmission error of the satellite signal are acquired to generate an analog signal. The method has simple calculation process and low complexity, and better realizes the real-time performance of signal reception analysis, thereby more accurately simulating the received signal in a dynamic environment. The method for simulating GPS signal dynamic receiving environment and the system thereof are applied to the field of signal processing.
Owner:NAT UNIV OF DEFENSE TECH
Method of order determination of engineering structure modal identification model
InactiveCN107133195AAccurate Structural Modal ParametersEasy accessAnalysing solids using sonic/ultrasonic/infrasonic wavesComplex mathematical operationsDegrees of freedomEngineering
The invention belongs to the technical field of engineering structures monitoring data analysis, provides a method of the order determination of an engineering structure modal identification model. By the method, each rank frequency of the algorithm preliminary solution structure is achieved through the characteristic values, next the modal response corresponding to each rank frequency is decomposed, then the root-mean-square value of the modal response is solved, and finally the modal response contribution index MRCI is obtained by summing the root-mean-square value of each degree of freedom in the modal response, the rank order and MRCI relationship diagram is generated, the rank order corresponding to the maximum of the ratios of two adjacent rank order MRCI values is found, and the found rank order is taken as the exact rank order for the model. The rank order of the model can be used as a truncation order of a singular value matrix in the characteristic algorithm, and can be used for the accurate identification of modal parameters of structures.
Owner:DALIAN UNIV OF TECH
Large-scale MIMO downlink precoding method based on deep learning
ActiveCN111865378AReduce computational complexityComputationally efficientRadio transmissionMachine learningPrecodingFeature vector
The invention discloses a large-scale MIMO downlink precoding method based on deep learning. According to the method, a base station calculates a precoding vector corresponding to each user terminal for downlink precoding transmission through a universal framework or a low-complexity framework by using instantaneous and statistical channel information of each user terminal according to traversal achievable rates of all users or an approximate utility function maximization criterion of the traversal achievable rates. The frame is based on the structure of the optimal solution of a precoding vector: a Lagrange multiplier is given, and the direction and the power of the precoding vector can be respectively expressed as a maximum generalized feature vector form and a closed form. The universalframework calculates an optimal Lagrange multiplier through a deep neural network, and then calculates a precoding vector through an optimal solution structure; and a low-complexity framework decomposes a precoding problem into an instantaneous sub-problem and a statistical sub-problem, and the instantaneous sub-problem and the statistical sub-problem are respectively calculated and recombined. According to the method, the downlink precoding can reach the nearly optimal reachable sum rate performance, and the calculation complexity is relatively low.
Owner:SOUTHEAST UNIV
Measurement synchronization method and system for power electronic equipment
ActiveCN105652076APeriodic Variable Sampling ImplementationGenerate accuratelyFrequency measurement arrangementReactive/real component measurementsDigital signal processingElectric power
The invention relates to a measurement synchronization method and system for power electronic equipment. The method comprises a data transmission method, a period variable sampling method, and a zero-crossing synchronization method. The system is composed of an AD data sampling module, an AD data receiving and storage module, an AD data packaging module, an AD data sending module, a power grid voltage data analysis module, a zero-crossing time calculating module, a synchronous signal sending unit, a phase-locked loop module, a real-time power grid frequency calculation module and a sampling period adjustment module. According to the solution scheme provided by the invention, the structure of the system is simple and novel and the system is suitable for a digital signal processing chip. The method is simple; application is flexible; and the system and the method can be realized conveniently. A power grid frequency can be tracked in real time; and an actual voltage value, an actual current value, and an actual reactive value can be calculated accurately under the circumstance that the power grid frequency fluctuation is large. The method and system have wide application range and can be applied to an FACTS device and can be applied to all pieces of power electronic equipment needing realization of functions of period variable sampling and zero-crossing synchronization.
Owner:STATE GRID CORP OF CHINA +1
Integrated circuit macro-module layout design based on module deformation and placement method
InactiveCN1449017AAchieve the desired purposeSolid-state devicesSemiconductor/solid-state device manufacturingComputer Aided DesignComputer module
The present invention belongs to the computer-aided design of module level layout and features that based on the original problem, and through altering the module size and corresponding lead line position, or module deformation, one serial simple layout problems successively approximating original problem are created and solved. During the successive approximation, one approximating factor Alphais used to control the module deforming degree, and the serial problems are solved successively in the order of increasing approximating degree or decreasing Alpha from the simplest approximated problem until Alpha of 1, that is, the module size is equal to that of original module or the approximated problem is the original problem itself. Meanwhile, the solution structure of the present problemis used as the initial solution structure of the next approximated problem. The algorithm is stable, efficient and has best result obtained and industrial application value.
Owner:TSINGHUA UNIV
Opportunity routing algorithm based on network encoding in satellite network
ActiveCN105634946AImprove throughputReduce transmissionForward error control useData switching networksPerformance functionData segment
Owner:DALIAN UNIV
Method of preparing artificial rutile with ferric salt solution leaching method
InactiveCN107043128ASpeed up the leaching reactionAvoid chalkingIron oxides/hydroxidesIron sulfatesHigh energyTitanium tetrachloride
Owner:郑祥发
Liquid X ray scattering sample cell
InactiveCN103940836APrevent evaporationAvoid reactionMaterial analysis using radiation diffractionTemperature controlDiffractometer
The invention relates to a liquid X ray scattering sample cell. The liquid X ray scattering sample cell comprises a cell body provided with a cavity and a sample cell which is arranged inside the cell body and is open at the top. The cell body is internally provided with a separating plate, and a water inlet pipe and a water outlet pipe are respectively arranged at the two sides of the separating plate; and a mounting shaft is arranged on the side wall of the cell body, and the mounting shaft is connected with a diffractometer side angle head. The liquid X ray scattering sample cell can be applied to a synchrotron radiation X ray multicircle diffractometer experimental facility and also can meet the requirement of a portable temperature control liquid sample cell of a diffractometer in a laboratory, so that the problems that a liquid sample cannot be filled, the temperature is controlled and the liquid sample is convenient to carry when structural information of liquid is measured by adopting an X ray reflection method are solved; and the application range of a powder diffractometer in the research field of solution structures is expanded, and a necessary experiment foundation is laid for carrying out solution X ray scattering new method study.
Owner:QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
Long-chain alkyl quaternary ammonium salt monomer, preparing method thereof and association polymer
ActiveCN105622451AEasy constructionGood temperature and salt resistanceOrganic compound preparationCarboxylic acid amides preparationPolymer scienceHalogen
The invention provides a long-chain alkyl quaternary ammonium salt monomer, having a structure as shown in formula 1, in formula 1, R1 is arylidene, R is a C8-C20 alkyl group, and X is halogen. The alkyl quaternary ammonium salt monomer can polymerize double bonds of an acrylamide group, is relatively higher in activity, has higher conversion rate in a copolymerization process and is more favorable for constructing a supermolecule solution structure; besides the conventional long-chain alkyl, a benzene ring structure is introduced into the molecular structure, such structure has larger steric hindrance and rigidity, and is favorable for inhibiting intramolecular association, a main chain molecular structure is more stretched, and has higher tackifying performance, and a polymer solution has relatively excellent temperature resistance and antisalt performances. The invention further provides a preparing method of the long-chain alkyl quaternary ammonium salt monomer and an association polymer. The formula I is showed in the description.
Owner:吉林光亚聚合物化工有限公司
Multi-index synchronous optimization method and system for external rotor switch reluctance motor
ActiveCN107688723ASimultaneous optimization of power performance indicatorsGeometric CADSpecial data processing applicationsEngineeringPerformance index
The invention discloses a multi-index synchronous optimization method and system for an external rotor switch reluctance motor. The optimization method includes the steps that a power constraint condition of an electric vehicle to awheel hub motor is established; a performance index and a structure parameterof the motor power are determined according to the power constraint condition; a motor structure size constraint condition of each structure parameter is established; an orthogonal table of each structure parameter is determined according to each motor structure size constraint condition, wherein the orthogonal table comprises a plurality of levels and corresponding values for each structure parameter, and a first set of orthogonal experiment is carried out; a multi-index synchronous optimization objective function is established according to the results of the first set of orthogonal experiment and the performance index; and an optimal solution structure parameter combination is determined according to the multi-index synchronous optimization objective function and the level of each structure parameter to achieve the synchronous optimization of multiple performance indexes.
Owner:TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Solution structure of RIP DD and uses thereof
The present invention relates to the three dimensional solution structure of receptor interacting protein dead domain (RIP DD), as well as the identification and characterization of various binding active sites of RIP DD. Also provided for by the present invention are methods of utilizing the three dimensional structure for the design and selection of potent and selective inhibitors of TNF signaling pathways.
Owner:WYETH LLC
Device for simulating polymer dissolution degree and injection experiments
The invention discloses a device for simulating polymer dissolution degree and injection experiments. The device comprises a cavity with a square outside and a circular inside, a pressure sensing system, a PC and a shearing device, wherein the cavity is provided with a liquid inlet channel, a spherical cavity and a liquid discharge channel which are sequentially communicated, the shearing device is mounted in the spherical cavity, filter screen cake is arranged in the liquid discharge channel, the pressure sensing system is provided with a pressure collecting connector, the pressure sensing system is mounted on the upper end face of the cavity, and the pressure sensing system, the PC and the shearing device are sequentially connected. The device has the advantages that the situation that when a polymer crosslinking body exists and is blocked and retained in the cavity by the filter screen, pressure rises, flowing is stopped, corresponding data collected by the pressure sensor is transmitted to the shearing device for shearing, the solution structure is destroyed greatly by the high-speed shearing, polymer solution viscosity is lowered, the solution passes the filter screen in a small volume manner, and the polymer solution entering a core does not block the core is simulated.
Owner:SOUTHWEST PETROLEUM UNIV +1
Carrier recovery method based on multichannel communication receiving system
ActiveCN106789830AImprove Adaptive FeaturesImprove performance consistencyMultiple carrier systemsDigital up converterIntermediate frequency
The invention discloses a carrier recovery method based on a multichannel communication receiving system. The method comprises steps that data sent by a transmitter is modulated by DBPSK and intermediate frequency sampling rate is increased by a digital up converter, and the like. The carrier recovery method solves the problems that the conventional frequency and phase locking method cannot lock phases continuously, more and more additional noise can be produced with increased bandwidth of digital phase locked loop, a structure of a solution is complex, difficulty in actual operation and cost increase can be caused and the like through steps of data extraction, handling and transformation, phase compensation and the like, the self-adaption characteristic of the method is improved, system performance consistency is improved, and production flow is simplified.
Owner:成都米风感知科技有限公司
Copper plating brightener
The invention relates to a copper plating brightener. The copper plating brightener mainly comprises copper sulfate, zinc sulfate, sulfuric acid, saccharin, citric acid, 2.4-2N methyl-pyridine, lead acetate and the like. The copper plating brightener has the characteristics of high brightness, high smoothness, high uniform plating capability, stable plating solution structure, high coating binding force, less using amount of the brightener and the like.
Owner:张家港市祥华电镀化工有限公司
Downlink interference suppression method for an indoor visible light communication system
ActiveCN109756270AAvoid missingRealize dynamic frequency reuseClose-range type systemsTransmission noise suppressionFrequency spectrumFrequency reuse
The invention relates to a downlink interference suppression method for an indoor visible light communication system, and belongs to the technical field of optical communication. According to the method, the optimal dynamic frequency reuse scheme is searched by adopting the improved tabu search algorithm, inter-cell interference and inter-user interference in the visible light communication systemare inhibited, and the communication performance of the system is improved. According to the invention, an interference pattern of a combined receiving and transmitting end is established as a basisfor determining an interference relationship; Designing an algorithm solution structure and a neighborhood structure based on an interference pattern; A tabu table strategy in the tabu process is improved so as to avoid falling into local optimum; And dynamically dividing the frequency band according to the load condition to realize the dynamic multiplexing of the frequency. According to the method, inter-cell interference and inter-user interference in an indoor visible light communication system can be effectively suppressed, and the data rate and the average spectrum efficiency of system communication can be improved on the basis of ensuring the communication fairness.
Owner:CHONGQING UNIV OF POSTS & TELECOMM
Antenna selection and power distribution scheme of energy collection large-scale antenna array system
In the invention, how to combine energy collection with a large-scale multi-antenna system is studied, so that the energy efficiency is obviously improved, and meanwhile, the requirements of actual limiting causal relationships such as energy and the like, RF chain energy consumption, limited battery capacity, transmission power and QoS (Quality of Service) are met. From a deterministic offline hypothesis, a field of view with limited united antenna selection and power distribution problems is formulated, which is due to the combined NP difficult property. We propose a nonlinear offline algorithm-combined fractional programming, dichotomy and Lagrangian dual decomposition, which is the performance reference. Then, comprehensive property analysis is provided, and an offline algorithm is provided from the aspects of optimality, convergence, uniqueness and complexity. By exploring a solution structure of an offline algorithm, we propose low-complexity causal knowledge of a suboptimal online algorithm which is only needed. And finally, the proposed offline and online algorithms pass simulation verification and comparison of various system configurations.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)
Three-phase to single-phase test device
InactiveCN108020758AFast and efficient on-site insulation testHigh insulation levelTesting dielectric strengthSoftware engineeringThree-phase
The invention discloses a three-phase to single-phase test device. The structure is connected by adopting a three-phase to single-phase structure for the first time. The three-phase to single-phase test device comprises a change-over switch module used for connecting a casing and a bus. The three-phase to single-phase test device further comprises a casing assembly used for performing a cable or bus insulation test. The three-phase to single-phase test device has the beneficial technical effects that (1) the solution is compact in structure, and the occupation space is greatly reduced comparedwith a traditional device; (2) test methods for different sizes of products of different manufacturers are unified through the test device, the universality is high, and the field test capability ofcovering various products by one device can be achieved; (3) the test device is simple in structure, mature in field construction process and short in construction period; and (4) the test device provides a convenient insulation test interface, and an insulation test is performed on GIS buses and cables very conveniently.
Owner:SHANGHAI SIEYUAN HIGH VOLTAGE SWITCHGEAR
Cold standby reliability redundancy distribution method and system based on swarm intelligence algorithm
InactiveCN112147969AImprove operational efficiencyReduce the number of variablesProgramme controlElectric testing/monitoringCold standbyDistribution method
The invention discloses a cold standby reliability redundancy distribution method and system based on a swarm intelligence algorithm, and aims to solve the problem of RRAP cold standby reliability redundancy distribution so as to optimize the system reliability of a cold standby redundancy system. The cold standby RRAP is also a model of mixed integer optimization programming; and the problem is difficult to solve by using a traditional method. According to the invention, in the cold standby redundancy system, a new solution structure is adopted; the number of variables is reduced by half; thepreprocessing of each variable boundary is found to reduce the solution space; a new SSO updating mechanism is adopted to be combined with elite selection to balance utilization and exploration and new local search so as to improve newly discovered gBest and solve the cold standby RRAP; and the optimal or high-quality solution of the RRAP of the cold standby redundancy system is obtained, the solution quality, the solution feasibility and unused resources of the final optimal solution are greatly reduced, the cold standby redundancy of the server and the like is greatly reduced, and the server operation efficiency of the cold standby redundancy system is improved.
Owner:FOSHAN UNIVERSITY
Two-diensional three-frequency dephase measuring method base on color structural light
InactiveCN100554869CAvoid measurement errorsOvercome precisionUsing optical meansPicture interpretationSinusoidal gratingObservational error
A two-dimensional three-frequency phase resolution measurement method based on colored structured light, the steps are: ① Prepare three gratings composed of two different three primary color sinusoidal lights with the same frequency; ② Project the grating onto the measured object, using two The same CCD camera was taken to obtain 24 photos; ③ Dephase the photos taken to obtain the phase values in the X direction and Y direction of each pixel on each photo; ④ Match the two phase values to calculate each The 3D coordinates of the point. The invention overcomes the defects of coding in only one direction and the shortcoming of low matching precision, so that the coding matching is more effective and accurate. It avoids the measurement error caused by contact deformation in the mechanical measurement method, and improves the measurement accuracy; it does not need to obtain three-dimensional information through two-dimensional scanning, which improves the measurement speed; it can record the color information of the object at the same time, so that the reverse engineering can be obtained from the three-dimensional object The acquisition of shape is further extended to the inversion of object color.
Owner:HUAZHONG UNIV OF SCI & TECH
An experimental device for simulating the solubility and injectability of polymers
The invention discloses a device for simulating polymer dissolution degree and injection experiments. The device comprises a cavity with a square outside and a circular inside, a pressure sensing system, a PC and a shearing device, wherein the cavity is provided with a liquid inlet channel, a spherical cavity and a liquid discharge channel which are sequentially communicated, the shearing device is mounted in the spherical cavity, filter screen cake is arranged in the liquid discharge channel, the pressure sensing system is provided with a pressure collecting connector, the pressure sensing system is mounted on the upper end face of the cavity, and the pressure sensing system, the PC and the shearing device are sequentially connected. The device has the advantages that the situation that when a polymer crosslinking body exists and is blocked and retained in the cavity by the filter screen, pressure rises, flowing is stopped, corresponding data collected by the pressure sensor is transmitted to the shearing device for shearing, the solution structure is destroyed greatly by the high-speed shearing, polymer solution viscosity is lowered, the solution passes the filter screen in a small volume manner, and the polymer solution entering a core does not block the core is simulated.
Owner:SOUTHWEST PETROLEUM UNIV +1
A measurement synchronization method and system for a power electronic device
ActiveCN105652076BNovel structureSimple methodCurrent/voltage measurementElectric digital data processingDigital signal processingElectric power
The invention relates to a measurement synchronization method and system for power electronic equipment. The method comprises a data transmission method, a period variable sampling method, and a zero-crossing synchronization method. The system is composed of an AD data sampling module, an AD data receiving and storage module, an AD data packaging module, an AD data sending module, a power grid voltage data analysis module, a zero-crossing time calculating module, a synchronous signal sending unit, a phase-locked loop module, a real-time power grid frequency calculation module and a sampling period adjustment module. According to the solution scheme provided by the invention, the structure of the system is simple and novel and the system is suitable for a digital signal processing chip. The method is simple; application is flexible; and the system and the method can be realized conveniently. A power grid frequency can be tracked in real time; and an actual voltage value, an actual current value, and an actual reactive value can be calculated accurately under the circumstance that the power grid frequency fluctuation is large. The method and system have wide application range and can be applied to an FACTS device and can be applied to all pieces of power electronic equipment needing realization of functions of period variable sampling and zero-crossing synchronization.
Owner:STATE GRID CORP OF CHINA +1
A kind of method for preparing artificial rutile by iron salt solution leaching method
InactiveCN107043128BSpeed up the leaching reactionAvoid chalkingIron oxides/hydroxidesIron sulfatesHigh energyTitanium oxide
The invention relates to a method of preparing artificial rutile with a ferric salt solution leaching method and belongs to the technical field of chemical metallurgy. The method of preparing high-grade artificial rutile by taking sand titanium concentrates as a raw material is simple in process and equipment, convenient to operate and low in production cost and overcomes the defects of higher energy consumption and difficulty in treating waste liquid. The method comprises the following steps: titanium concentrate strong reduction, ferric salt solution leaching, solid-liquid separation, solid substance washing and drying and filtrate purification. The method of preparing the artificial rutile with the ferric salt solution leaching method enables titanium oxides to form a more stable porous solid solution structure by controlling atmosphere and adopting high-temperature strong reduction, accelerates the leaching reaction speed of iron and prevents titanium-containing particles from pulverizing at the same time; and the obtained artificial rutile as a product is better in particle size distribution and proper in particle size and is an ideal raw material for producing titanium tetrachloride by fluidizing chlorination.
Owner:郑祥发
A debonding structure and method for an inertial sensor
ActiveCN105480932BDisbonding implementationExtended service lifeSpeed measurement using gyroscopic effectsAcceleration measurementEngineeringSolution structure
Owner:GOERTEK MICROELECTRONICS CO LTD
Identification of cyclic peptide agonists of galanin receptor 2 and 3 guided by spexin solution structure
ActiveUS10376555B2Increased serum half-lifeImprove biological activityMetabolism disorderPharmaceutical delivery mechanismDiseaseCyclic peptide
Cyclic peptide agonists toward human galanin receptor 2 (GalR2) and galanin receptor 3 (GalR3) based on hidden conformation of spexin solution structure for GalR2 and GalR3-related and spexin-deficient disorders are designed and synthesized. LH101, LH102, and LH101 (Ac) are potent spexin analogs with prolonged action, which can be used in the treatment of GalR2 and GalR3-related diseases and spexin-deficient disorders, such as obesity.
Owner:HONG KONG BAPTIST UNIV
Integrated circuit macro-module layout design based on module deformation
InactiveCN1449017BSolid-state devicesSemiconductor/solid-state device manufacturingComputer Aided DesignComputer module
The present invention belongs to the computer-aided design of module level layout and features that based on the original problem, and through altering the module size and corresponding lead line position, or module deformation, one serial simple layout problems successively approximating original problem are created and solved. During the successive approximation, one approximating factor Alphais used to control the module deforming degree, and the serial problems are solved successively in the order of increasing approximating degree or decreasing Alpha from the simplest approximated problem until Alpha of 1, that is, the module size is equal to that of original module or the approximated problem is the original problem itself. Meanwhile, the solution structure of the present problemis used as the initial solution structure of the next approximated problem. The algorithm is stable, efficient and has best result obtained and industrial application value.
Owner:TSINGHUA UNIV
Structure of G-protein (RGS4) and methods of identifying agonists and antagonists using same
The present invention provides a solution structure of free RGS4 determined using NMR techniques. The structure includes a G alpha binding site and allosteric bindingsite. The structural information provided can be employed to identify, select or design agonists and antagonists of RGS4 activity. The invention includes two dimensional and three dimensional models and representations of the structure of free RGS4 based upon structural coordinates that are provided that are useful in the methods described.
Owner:WYETH LLC
Opportunistic Routing Algorithm Based on Network Coding in Satellite Networks
ActiveCN105634946BImprove throughputReduce transmissionForward error control useData switching networksPerformance functionData segment
The invention relates to an opportunity routing algorithm based on network encoding in a satellite network. The opportunity routing algorithm comprises the following steps: S1, modeling the maximum average throughput of the satellite network, wherein modeling elements comprise a source node, a destination node, a relay node, a sending rate of an information source, a performance function of the average throughput, a credit rate, a data packet and a feedback encoding packet; S2, figuring out an optimal solution structure of the model by using the convex optimization theory; S3, compressing feedback information indicating that the data packet is received in a feedback encoding packet by using the encoding feedback technology, and meanwhile, locally maintaining a link state table in each node by using the encoding feedback technology, wherein the link state is the information of the node and an adjacent node and a measurement of the link, and the measurement comprises a Lagrange variable difference of the node and the adjacent node; S4, processing and determining to send a next hop node set of the current data packet and determining the size of the credit rate of each node in the set by the relay node by using an encoding feedback algorithm; and S5, confirming a data segment.
Owner:DALIAN UNIV
A method and structure for solving rigid-flexible overlap before road overlaying
ActiveCN105178132BDelayed longitudinal reflection cracksExtended service lifePaving detailsEngineeringRoad surface
The invention provides a method and structure for achieving a rigid-soft overlapping joint before pavement paving. Different lanes are provided with different old pavement structures. The old pavement structure of a motor vehicle lane is a cement pavement, and the old pavement structure of a non-motor vehicle lane is an asphalt pavement. The old cement pavement of the motor vehicle lane is treated through a rubblization technology, and then the whole fracture surface is uniformly paved with at least one asphalt concrete layer. According to the method and structure, the old cement pavement approximates the old asphalt pavement in equivalent modulus of elasticity after being treated through the rubblization technology, so that the influence on a newly-paved asphalt face layer of a rigid-soft overlapping longitudinal gap is reduced; longitudinal reflection cracks of the pavements are delayed; the service life of the pavements is prolonged.
Owner:FUZHOU PLANNING DESIGN & RES INST
Bcl-w structure and uses therefor
The present invention discloses the solution structure of Bcl-w and Bcl-w complexes as well as methods of using that structural information to screen for and design compounds that interact with Bcl-w or variants thereof.
Owner:HINDS MARK GAVIN +2
A long-chain alkyl quaternary ammonium salt monomer, its preparation method and associated polymer
ActiveCN105622451BEasy constructionGood temperature and salt resistanceOrganic compound preparationCarboxylic acid amides preparationPolymer scienceHalogen
The invention provides a long-chain alkyl quaternary ammonium salt monomer, having a structure as shown in formula 1, in formula 1, R1 is arylidene, R is a C8-C20 alkyl group, and X is halogen. The alkyl quaternary ammonium salt monomer can polymerize double bonds of an acrylamide group, is relatively higher in activity, has higher conversion rate in a copolymerization process and is more favorable for constructing a supermolecule solution structure; besides the conventional long-chain alkyl, a benzene ring structure is introduced into the molecular structure, such structure has larger steric hindrance and rigidity, and is favorable for inhibiting intramolecular association, a main chain molecular structure is more stretched, and has higher tackifying performance, and a polymer solution has relatively excellent temperature resistance and antisalt performances. The invention further provides a preparing method of the long-chain alkyl quaternary ammonium salt monomer and an association polymer. The formula I is showed in the description.
Owner:吉林光亚聚合物化工有限公司
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