261results about How to "Proven reliability" patented technology

The invention provides an AUV intelligent collision prevention device and a collision prevention method. The state information of the AUV collected by the sensor is passed to a dynamic control machine by a serial port. The dynamic control machine transmits the state information to a mission management machine by a network; a multi-beam front looking-sonar collects barrier information which is converted to a digital signal describing local environment; the mission management machine receives the digital signal of the local environment; an AUV barrier decision-making system determines the position of the barrier, establishes a local environment model which is passed on to a collision prevention planning system; the collision prevention system figures out course, speed, and depth of the AUV by collision prevention algorithm and passes on the three instructions to the dynamic controller by the network; the dynamic control machine controls resolving by movement, uses a control voltage to drive an executing agency, and adjusts course, speed and depth of the AUV according to the steering instructions, thus realizing AUV collision prevention. The invention has the advantages that collision prevention is realized in real time without needing prior knowledge and reliability and validity of the proposal of the invention are proved by a lake testing.

Described is a system and methods for registering and acquiring e-credentials using personal devices and an identity registry system that combines the method for handling digital seals with a proof-of-existence method. The identity registry system is used to register and verify e-credentials. Device owners register their e-credentials when created and updated, and verify acquired e-credentials to safeguard against tampering and errors. When registering an e-credential, the e-credential is hashed and digitally sealed creating an identifying thumbprint that is stored in the identity registry system. When verifying an acquired e-credential, the e-credential is hashed, the identity registry system is searched to locate the identifying thumbprint, and the digital seal of the thumbprint is verified. A requesting owner can request an issuing owner to proof, attest, and digitally seal an e-credential of the requester. Both the issuer and requester use the identity registry system to verify e-credentials acquired from the other party.

The invention provides a brown planthopper resistant rice gene Bph9 as well as a molecular marker and application thereof. The brown planthopper resistant rice gene Bph9 has a nucleotide sequence as shown in SEQ ID No.1 and a cDNA (complementary Desoxvribose Nucleic Acid) sequence as shown in SEQ ID No.2. The Bph9 gene is located between molecular markers InD2 and RM28466. The molecular markers closely linked with the gene also includes one of RM28438, InD28450, InD28453, InD14, InD28432, RM28481 and RM28486 which can be used for sieving the rice containing the brown planthopper resistant gene Bph9. The Bph9 gene belongs to the NBS-LRR (Nucleotide Binding Site-Leucine Rich Repeat) gene family; the encoded protein is related to the plant disease resistance; the Bph9 gene is transferred into common rice by virtue of genetic transformation and hybridization, and thus the resistance of rice to brown planthopper can be improved, so that the damage of brown planthopper is decreased, and the purposes of yield increase and yield stabilization are realized.

The invention discloses a sliding-mode variable structure control method of a single phase grid-connected inverter based on a multi-resonant sliding mode surface. The method comprises the steps of: firstly, building a linear sliding mode surface according to detected current i1 of an inverter side filter inductor of the single phase grid-connected inverter, the voltage vc of a filter capacitor, the current i2 of a network side filter inductor, and the target output current i1* of a grid-connected inverter system, the target voltage vC* of the filter capacitor and the grid-connected target current i2*; adding a resonant item into the linear sliding mode surface so as to obtain the multi-resonant sliding mode surface; designing a sliding-mode variable structure controller by the multi-resonant sliding mode surface, leading a linear state feedback controller to an original nonlinear controller to obtain a final control quantity modulation wave d(s), and finally comparing the modulation wave with a carrier wave to generate a driving signal for driving a switch tube to act. According to the control method disclosed by the invention, the robustness and dynamic response ability of the grid-connected inverter system are improved; the tracking accuracy of grid-connected current is also improved; the harmonic content is removed, and the control method is simple and easy to achieve.

The invention discloses a box-type integrated multiple micro source interface micro power grid connected system device. The exterior of the device is a box body of a container cabinet body, and the interior of the box body is of a three-room structure, wherein a front room is an operation room, a middle room is an equipment room, and a rear room is a refrigerating room. The box body adopts an alternative-direct current bus structure, wherein two buses are connected through a converter. In addition, each micro source (a micro flue gas turbine, a photovoltaic battery and a wind driven generator) and energy storage elements (a super capacitor and a storage battery) are connected on an input side of each inside corresponding converter through external terminals outside a container so as to put originally scattered converters into a box-type cabinet body, and are centralized and controlled through control chips taking charges of energy. Construction cost of communication equipment is left out, and work reliability of a micro network system is greatly improved. Compared with a traditional micro network, the box-type structure integrated device reserves operation characteristics of the original micro network, reduces micro network system installment, unloading and transportation difficulties, and is practical.

The invention relates to a stereo vision three-dimensional displacement measuring method based on synchronous sub-region searching, which aims at solving the problem that the sub-region searching is not synchronously carried out in the time sequence matching process and the measuring calculation efficiency is low. The concrete processes are as follows: 1., calibrating stereo vision system, obtaining internal and external parameter matrix, collecting images and obtaining image sequence; 2, extractting that image coordinates of each measure point on the left image, automatically generating a DICmatching template, and calculating the size of the search sub-region; 3, obtaining image coordinates of correspond measuring points on that right image; 4, judging whether that DIC match result of each measuring point on the right image satisfies the polar constraint relation or not, and correcting the DIC matching result if the DIC match result is not satisfied; 5, synchronously carrying out DICsub-region searching on each measure point on that left and right image sequences to obtain matching results correspond to each measuring point of the left and right image sequences; 6, obtaining thethree-dimensional coordinates and the three-dimensional displacement of each measuring point at each time. The invention is used in the field of structural three-dimensional displacement measurement.

The invention provides a top corrosion testing device of a wet gas loop in the high-temperature and high-pressure environment, which is applicable to wet gas top corrosion simulation experiments under actual high-temperature and high-pressure working conditions and mechanism research of corrosion behaviors. The top corrosion testing device comprises a heating kettle, a pipeline circulating system, a heating and heat insulation system, a circulating condensed water tank refrigerating system, a circulating pump, a signal conduction channel, an external control box, a flow state observation window, an external gas supply system, a three-electrode system, an electrochemical work station, a computer and the like. The device has the advantage that the actual working conditions, including a flow state, a flow speed, pressure, temperature and the like of fluid in a pipeline, in the pipeline can be really simulated, so that the actual environment can be simulated to the greatest extent and real electrochemical data is measured. With the adoption of the device provided by the invention, a top corrosion in-situ electrochemical signal test can be carried out on a test sample, and a corrosion mechanism of pipeline steel can also be researched by utilizing a weight loss method. Therefore, the device provided by the invention has very important meanings on the research of a wet gas top corrosion mechanism of the pipeline steel.

The invention discloses a position information updating method for the position-based routing of a vehicular ad hoc network. The method comprises the following steps of: 1) analyzing vehicle track data in an early stage, and establishing a threshold value table of a vehicle position state entropy by sub-steps; 2) predicting the position of a target vehicle; 3) evaluating a prediction result, and calculating an entropy for a set of current possible positions of the target vehicle; and 4) selecting a corresponding threshold value from the threshold value table obtained by the third sub-step of the step 1) according to the information of the target vehicle and the given query cost of the vehicular ad hoc network by using a contract issuing vehicle, comparing the entropy calculated by the step 3) with the selected threshold value, querying the actual position of the target vehicle through a third-party communication link by using the contract issuing vehicle to instruct the routing if the entropy is higher than the threshold value, otherwise performing the routing by using a prediction result. The query cost and network performance are well balanced, and the performance of the vehicular ad hoc network is optimized on the basis of the given query cost.

A composite container lid for a packing container, which comprises an inner cap 30 fitted onto the container mouth portion 20, an over-cap 40 fitted onto the inner cap 30, and an IC tag 10, wherein an engaging means is provided between the inner surface of a skirt 42 of the over-cap 40 and the outer surface of a cylindrical wall 32 of the inner cap 30, the IC tag 10 comprises a resin film 1 that includes an IC chip 3, an antenna 5 and an unsealing detector circuit 9, and the IC tag 10 is attached to the inner cap 30 or to the over-cap 40 in a manner that the unsealing detector circuit 9 is broken by the motion of the over-cap 40 relative to the inner cap 30 caused in the step of unsealing the inner cap 30.

The invention provides a top-corrosion electrochemical testing device in high-temperature and high-pressure environments, belongs to the field of corrosive electrochemistry, and is suitable for top-corrosion simulation experiments and corrosion behavior mechanism research in high-temperature and high-pressure working conditions. The top-corrosion electrochemical testing device comprises a high-temperature and high-pressure reaction kettle, a heating and heat preservation system, a circulating condensate water tank refrigerating system, a three-electrode system, a signal conduction pathway, a control box, an external air supply system and a computer. The device has the advantages that actual high-temperature and high-pressure working conditions can be achieved; top-corrosion in-situ electrochemical signal testing can be carried out; and the method is of great significance on mechanism research on high-temperature and high-pressure top-corrosion behaviors and electrochemical reaction.

The invention provides a control method for online dynamically restraining power grid low frequency oscillation and subsynchronous oscillation. Firstly, power grid voltage and current are acquired via a sensor, and after the voltage and the current are converted into signals readable by a digital processor, online real-time quick FFT is carried out via a digital signal processor (DSP); then, an SVG current control strategy is designed, and the SVG outputs accurate reactive power compensation according to a real-time power grid low frequency oscillation component and a subsynchronous oscillation component. On the basis of the original SVG control strategy, control algorithm for online dynamically restraining power grid subsynchronous oscillation is added, positive damping can be effectively provided with a wind farm, and a wind power generation system is stabilized; and compared with the existing restraining strategy, the SVG can output more accurate and quicker active power and reactive power according to the real-time power grid subsynchronous oscillation component, and the subsynchronous oscillation problem in the power grid is solved.

The invention belongs to the technical field of indication or measurement devices on machine tools, and discloses a tool failure state monitoring method based on the accumulation and control theory. The method comprises the steps that information entropy and correlation are used as controlled quantity, original cutting force signals are subjected to analysis reconstruction through an empirical mode decomposition method, interference of random errors on analysis parameters is effectively reduced, and a reliable basis is provided for extraction and providing of cutting force signals; signal average power and friction coefficients in the reconstructed cutting force signals are extracted, the abrasion and damage states of a tool are represented, key parameters are defined, and a perfect tool failure state analysis method is formed through improved accumulation and control graphs. By means of abrasion experiments for tools made from various materials, compared with a traditional measurementmethod, practicability and reliability on the ultra high strength steel and stainless steel semifinishing work conditions are proved, and the rapid and reliable tool abrasion state real-time monitoring method is used in a cutting data service system.

The invention discloses a plant expression vector and application thereof. The plant expression vector comprises an expression box expressing a tfdA gene, wherein the expression box comprises a CaMV35S promoter, a tfdA gene and a terminator that are sequentially connected; the nucleotide sequence of the tdfA gene is a sequence 2 in a sequence table, and the nucleotide sequence of the CaMV35S promoter is a sequence 1 in the sequence table. The construction of the vector of the invention has very important application values on the construction of the gene recombinant expression vector of the cotton, the gene transformation (especially providing incontestable evidence for the transgenes of pollen tubes in China), later generation screening of the transgenes and the whole cotton gene engineering for the research of the cotton transgenes.

The invention pertains to the filed of biological engineering and discloses a method for testing chromosome 22q11.2 microdeletion and microduplication; the testing method comprises the steps of: extracting genome DNA and conducting multiplex fluorescent quantitative PRC multiplex amplification; a multiplex amplification system comprises an internal reference G6PDH and 5 STR markers including D22S873, 22D_5_1, 22D_4_5, 2D_4_4 and 22 D_4_3; PCR amplified products are taken and modified to convert a double-chain product into a single-chain product on which a capilary electrophoretic analysis can be conducted; the capilary electrophoresis is adopted to analyze the length and yield of the modified product; and a quantity ratio analyzing method and/or a method of analyzing the position and quantity of peaks are adopted to judge whether the chromosome is normal and whether microdeletion or microduplication exists. The method can improve the testing reliability, shorten the testing time, lower the testing cost and be convenient for clinical use on large scale.

The invention relates to an agrobacterium-mediated cotton transgenic method independent of tissue culture, belonging to the biotechnology field. The method comprises the following steps: dispensing agrobacterium-sucrose solution with 0.05% of surfactant Silwet L-77 and 40mg of 1-1acetosyringone on stylus in the afternoon of cotton fertilization or in the morning on the next day; preserving moisture for two days; harvesting seeds and performing resistance authentication; extracting DNA and performing PCR and Southern blot detection; and obtaining transgenic plants by multiple treatments. The transformation ratio ranges from 0.05% to 0.65%, thus proving the repeatability and reliability of transformation systems of agrobacterium-dipped cotton stylus. Compared with the traditional transgenic method dependent on tissue culture, the transformation method of the agrobacterium-dipped cotton stylus is simpler, more convenient, more economical and efficient, and simultaneously can avoid problems of limitation by cotton genetype and easy occurrence of somaclonal variation and the like in the process of tissue culture.

The invention belongs to the technical field of analysis of gene expression and particularly relates to application of ClCAC gene and ClSAND gene as reference genes in analysis of gene expression of watermelon fruits. According to the invention, specific primers are designed for ClCAC gene and ClSAND gene. The specific primers cross over joint loci of two exons; no amplification product is generated when a genome DNA is used as a template; a target segment can be obtained through amplification when cDNA is used as a template; the nucleotide sequences of the primers are shown in SEQ ID No.1-4. Real-time fluorescence quantification PCR detection shows that both the ClCAC gene and the ClSAND gene can be expressed stably in different development stages of watermelon fruits which are different in gene type and fruit bearing mode and thus the ClCAC gene and the ClSAND gene can be used as a reliable reference gene combination in analysis of gene expression by real-time fluorescence quantification PCR detection. The reference gene combination has the advantages of good expression stability and the like and is not influenced no matter whether the genome DNA contamination exists in a cDNA sample or not.

The invention discloses an integrated ELISA (Enzyme-Linked Immuno Sorbent Assay) chip based on distance detection targets and a detection method thereof. The integrated ELISA chip is provided with a plurality of water-phase cavities and oil-phase cavities which are alternatively arranged into a line, and front cavity bodies are communicated with rear cavity bodies; water-phase inlets are formed in the water-phase cavities; oil-phase inlets are formed in the oil-phase cavities; the water-phase cavity in the leftmost side is connected with a dye cavity which is additionally provided with a third inlet; the dye cavity is communicated with a dye gas column channel; and scales are arranged beside the dye gas column channel. The integrated ELISA chip disclosed by the invention integrates fussy steps of immunological experiment, cleaning and distance signal output onto a microfluidic pneumatic chip, and can be used for high-sensitivity quantitative instantaneous detection of multiple targets such as protein and cells and the like.

The invention discloses a multi-state space information network topology generation optimization algorithm. The multi-state characteristic of the satellite system is considered; existing satellite constellations, the connectivity, the visual distance and the like are used as constraint conditions; high dynamics of a satellite network is realized; an improved multi-objective simulated annealing algorithm is designed to perform topology generation by taking link average end-to-end time delay and maximum end-to-end time delay as optimization objectives, an approximate solution of a global optimaltopology structure is obtained under the condition of considering multiple states of a satellite, and the reliability and invulnerability of the generated satellite network topology are proved. By designing an algorithm, the static topology is changed, generated and optimized into the dynamic topology, the network time delay is reduced, and the network survivability is improved. By means of the ISOSA algorithm, the problem that the network communication performance of static topology is reduced under the multi-state condition is solved, and rapid transmission of information between satellitesand survivability of the whole space information network are guaranteed.

The invention discloses a plasma miRNA marker relevant to lung adenocarcinoma auxiliary diagnosis and the application thereof. The marker is one or more of miR-19b-3p, miR-21-5p, miR-221-3p, miR-409-3p, miR-425-5p and miR-584-5p. Plasma miRNA serving as the novel biological marker has the advantages of being high in stability, minimally invasive, easy to obtain and high in sensitivity and specificity. Development and utilization of the molecular marker can provide a new direction for diagnosis and further treatment of diseases including tumor. Through the research, a lung adenocarcinoma plasma miRNA marker with clinical diagnosis potential can be obtained in a more targeted mode. Research proves the reliability and repeatability of the group of miRNA as a noninvasive marker for diagnosis of lung adenocarcinoma.

The invention discloses application of a reagent for detecting circ_CLASP2 to preparation of a nasopharynx cancer diagnosis preparation as well as a kit. A plurality of nasopharynx cancer tissues andnormal nasopharynx epithelial tissues are collected, and the expression condition of circ_CLASP2 is detected by utilizing a qRT-PCR technology. The result shows that the expression level of the circ_CLASP2 in the nasopharynx cancer tissue is three times that of the normal inflammatory nasopharynx epithelium, and the difference of the two groups of data has statistical significance (P is equal to 0.0386). Therefore, the circ_CLASP2 can serve as a nasopharynx cancer auxiliary diagnosis molecular marker and has a far-reaching clinical significance and an important popularization and application prospect.

The invention provides a rice brown planthopper resistance gene Bph6 and molecular markers closely linked with the same. A nucleotide sequence of the rice brown planthopper resistance gene Bph6 is represented as SEQ ID No.1, and a cDNA (complementary desoxyribonucleic acid) sequence of the rice brown planthopper resistance gene Bph6 is represented as SEQ ID No.2; the gene Bph6 is positioned between a molecular marker H and a molecular marker Y37 and are closely linked with the two molecular markers; rice containing the brown planthopper resistance gene Bph6 can be screened by the molecular marker H and the molecular marker Y37. The gene Bph6 is transferred into a common rice variety through genetic transformation and hybridization, and resistance of the rice to brown planthopper can be improved, so that damage caused by the brown planthopper is reduced and yield increase and stable yield are realized.

The present invention discloses a circulating miRNA marker related to auxiliary diagnosis of papillary carcinoma of thyroid and application thereof. The marker is one or more selected from plasma markers miR-346, miR-10a-5p and miR-34a-5p and serum markers miR-25-3p, miR-296-5p and miR-92a-3p. As a novel biomarker, circulating miRNA has the characteristics of good stability, easy preparation through minimally invasive operation, high sensitivity and high specificity, and development and utilization of molecular markers will provide new directions for the diagnosis and further treatment of various diseases including tumors. The circulating miRNA marker having a clinical diagnosis potential for papillary carcinoma of thyroid is provided by the invention in a more targeted manner. Researchesconfirm reliability and reproducibility of this group of miRNAs as non-invasive markers for diagnosis of papillary carcinoma of thyroid.

The invention provides a radio-frequency vertical connection circuit between two-dimensional millimeter wave modules, aiming at the radio-frequency vertical connection circuit with higher reliability and more convenient assembly and disassembly. The radio-frequency vertical connection circuit is implemented through the following technical scheme: an upper module metal structural member (2) and a lower module metal structural member (4) are fixed through a screwed way or the other detachable way, and the lower end of the upper module metal structural member and the upper end of a lower module two-dimensional multi-chip circuit board component (3) are in pressure fit; a coaxial connector (5) is welded in the upper module metal structural member, so that a vertical circuit connection between an upper module two-dimensional multi-chip circuit board component (1) and the lower module two-dimensional multi-chip circuit board component is realized; and a fuzz button (53) is coaxially connected to a probe (54) of a step cylinder structure, and a small end of the probe (54) is higher than an outer circle insulating layer (52) to be in contact with the lower module two-dimensional multi-chip circuit board component. The radio-frequency vertical connection circuit has the advantages of simple structure, small insertion and extraction force and easiness in assembly and disassembly.

The invention belongs to the technical field of water and soil conservation study devices, and relates to a dynamic observation device used for a slope topography evolution process. The two hosts emitparallel, equal-height and overlapping laser planes from different orientations, and the laser planes are projected onto the slope topography; an image collecting device shoots the slope topography which laser rays are projected onto at an angle perpendicular to the layer planes to form a video screenshot, the video screenshot is imported into a computer to form a three-dimensional stereogram, and then parameters such as the slope volume and the slope gradient are calculated. According to the device, by rotating rotary knobs of mechanical fine tuning devices in the topographic meter hosts, equal-interval parallel accurate adjustment of laser ray planes is achieved; according to the device, by observing a fixing bolt on a support and a worm handle rotary knob in a view screen box, moving and rotation of a camera used for image collection are controlled. The invention provides a novel topographic meter through which the spacing and the angle of a linear laser can be conveniently calibrated, and all the topographies including local deep grooves on an eroded slope can be accurately observed.

A scheduling method based on green-energy-aware uses solar energy as green energy and conducts optimizing and distributing on works reaching a data center. The scheduling method based on green-energy-aware comprises the following steps: predicting according to illuminated scope and weather conditions to acquire solar energy which can be used by the data center; preprocessing the works reaching to the data center, each work comprising a plurality of tasks, communication constraint relationships existing among all tasks, conducting grading on works needing to schedule according to the communication constraint relationships in works, and gradually distributing tasks without communication constraint relationships to every grade; under requirement of meeting work time limit, conducting scheduling on preprocessed work assembly according to grades, sequentially distributing task of every grade to every server, fully considering loss conditions of the servers and communication network in the distributing process, and aiming at achieving highest solar energy use ratio. The scheduling method based on green-energy-aware can be applied to scheduling of the data center of random dynamic, achieve the effect that the solar energy use ratio is highest and cost of the data center and carbonic emission are lowered.