73 results about "Natural field" patented technology

A real-time camera image of a student is displayed to the student while the student is performing a physical activity. The student can switch between seeing his natural field of view and the live video image by refocusing his eyes. Additionally, instructional information may be overlaid on the real-time video, thus enhancing the learning process.

A bank angle of a vehicle can be accurately calculated using yaw axis data and roll axis data, and based on the calculated bank angle, vehicle illumination optics can be controlled to maintain a pattern of distributed light from the illumination optics to be generally horizontal. The calculated bank angle may be zeroed when the yaw axis data equals zero. The improved pattern of distributed light from the illumination optics illuminates a more natural field of view for the vehicle driver during a bank. In some embodiments, the vehicle illumination optics can include a primary illumination group and a plurality of side illumination groups.

The present invention relates to potential difference signal acquiring method and system for distributive parallel intelligent electrodes. In certain area, several groups of intelligent electrodes comprising several work electrodes each are distributed, and each work electrode is connected to signal regulating and measuring circuit. Each intelligent electrode has its every work electrode set in one of four work states, positive supplying electrode, negative supplying electrode, common earth and sampling. Of all the work electrodes in several intelligent electrodes, only three are in positive supplying electrode, negative supplying electrode and common earth state separately while the others being in potential difference signal sampling state. During the powering process, the natural field, primary field and secondary field of all the electrodes are measured and the potential difference signals are A / D converted and fed to computer for saving and processing circularly.

The present disclosure is directed to augmented reality navigation systems and methods of their use that, inter alia, address the need for systems and methods of robotic surgical system navigation with reduced distraction to surgeons. Augmented reality navigation systems disclosed herein enable a surgeon to maintain focus on a surgical site and / or surgical tool being used in a surgical procedure while obtaining a wide range of navigational information relevant to the procedure. Navigational information can appear in the augmented reality navigation system as being presented on virtual displays that sit in a natural field of view of a surgeon during a procedure. Navigational information can also appear to be overlaid over a patient's anatomy. Augmented reality navigation systems comprise a head mounted display comprising an at least partially transparent display screen, at least one detector connected to the head mounted display for identifying real-world features, and a computer subsystem.

The invention discloses an inertial power generation device and an acceleration direction detection device. The power generating device comprises a base, power generating units and a movable body, wherein the power generating units are fixedly connected with the base, the movable body is not fixedly connected with the base, and when the movable body is in contact with the power generating units and generates mutual acting force with the power generating unit, the power generating units can convert work made by the acting force generated on the power generating units by the movable body into electric energy. Through detecting electric signals generated by the different power generating units, the inertial direction and the acceleration direction of the whole device can be determined. The low-intensity and unstable mechanical energy generally existing in the natural field can be converted into the electric energy, and wide application prospects are realized.

The invention discloses a method for breeding vespa velutina auraria smith, comprising the following steps: taking wild vespids at the end of the autumn to manually manage and feed to help the wild vespids to live through the winter; and manually helping the wild vespids to build a hive in group in the spring of the second year and moving the hive to recycle. The method is characterized in that a swarm of vespa velutina auraria smith in a pairing season are moved to a sealed pairing chamber to feed; after the swarm of vespa velutina auraria smith are paired for 3 to 5 minutes, a bamboo stick stained with water-based paints is utilized to spot in time; the spotted fertilized female vespids are gathered to manually care so as to live through the winter; back vespids which survive from the winter are moved one by one into a vespid cylinder to feed and manage in the second year so that the vespids build the hive, spawn and care children of the vespids in the vespid cylinder; and the hive is moved to a natural field to breed when the number of the worker vespids reach to 14-15. The method for breeding vespa velutina auraria smith can not only solve the provenance problem to set an example of manually breeding the vespa velutina auraria smith and excellently breed and culture the vespa velutina auraria smith, but also can greatly improve the expansion speed of hive groups and save costs of manufacture, baits, labors, and the like of hives, thereby being suitable for breeding the vespids in a large scale. The method has low cost, fast expansion of a swarm and good effect.

A real-time camera image of a student is displayed to the student while the student is performing a physical activity. The student can switch between seeing his natural field of view and the live video image by refocusing his eyes. Additionally, instructional information may be overlaid on the real-time video, thus enhancing the learning process.

The invention discloses a natural electromagnetic radiation sounding multichannel detection method. An effect of sounding by using the same natural field source at the same time in a wide range is achieved by adopting a multi-channel ground detecting device; and an influence that natural field intensity and frequency distribution change along with time when performing single-point detection is overcome to realize fine contrast between detection results so as to improve detection quality and work efficiency. The invention discloses a contrast method for converting dimensionless relative resistivity (rhor) of a concerned rock stratum into dimensional apparent resistivity (rhoa) or resistivity (rho), so that a geological interpretation level of the detection results is improved. Two-way data transmission link is established between a computer and a remote data processing center for reprocessing a preprocessed result of an exploratory area and providing a sounding result map. The data processing centre grasps work progress situation of each exploratory area at any time and provides information for adjusting work arrangement of the exploratory area when necessary.

The invention discloses an extremely low frequency and magnetotelluric joint measurement method, and belongs to the technical field of deep resource detection. The extremely low frequency and magnetotelluric joint measurement method is specifically used for precise detection of deep geological formation and construction, and can be especially used for the detection of high-resolution electrical fine structures in deep 10km of oil and gas fields. The extremely low frequency and magnetotelluric joint measurement method is as follows: an electromagnetic wave is obtained by using a signal emissionsource of a WEM method, that is, variable frequency current is injected into the underground through a large emission power source, the generated electromagnetic wave is propagated upward to form a sky wave, the sky wave is propagated to an ionized layer, then is reflected by the ionized layer to an underground ore body and finally is propagated by an underground medium to the ground; and an array type WEM electromagnetic signal and an MT natural field electromagnetic signal are received in an oil and gas field, and a high-resolution electrical fine structure in the deep oil and gas field isobtained by joint measurement and data processing inversion interpretation of the WEM electromagnetic signal and the MT natural field electromagnetic signal. By adoption of the extremely low frequencyand magnetotelluric joint measurement method disclosed by the invention, the prediction precision of residual basin distribution in the ultra-deep mesoproterozoic erathem and neoproterozoic erathem can be improved, and a scientific basis is provided for the assessment of oil and gas resources within the depth range.

A high-voltage power transmission system is used as an extremely large antenna to extract spatiotemporal space, physical, and geological information from geomagnetically induced currents (GIC). A differential magnetometer method is used to measure GIC and involves acquiring line measurements from a first fluxgate magnetometer under a high-voltage transmission line, acquiring natural field measurements from a reference magnetometer nearby but not under the transmission line, subtracting the natural field measurements from the line measurements, and determining the GIC-related Biot-Savart field from the difference. NASA warning and alarm systems can be triggered based on determinations of GIC amplitude levels that exceed a set threshold value.

The invention discloses a construction method of a natural scene character region detection model based on no anchor point, and the method comprises the steps: introducing a convolution score for predicting the inclination angle of a boundary frame in a detection mode based on pixels, so as to detect an inclined character in a natural scene; adding deformable convolution DCN into some layers of anetwork backbone, so the ability of the network to express specific features of a text instance is improved, and the receptive field of a text target shape is more flexible; introducing an attention module into the network, so extracted features are filtered, positive information is enhanced, and interference information is suppressed. According to the method, the classification loss, the regression loss CIoU Loss, the centrality loss and the angle loss are used as a joint loss function, so the detection precision is improved, the target frame regression becomes more stable, and meanwhile, a higher convergence speed is achieved.

The invention discloses a method for identifying stability of cadmium accumulation environment of the grains of rice varieties. The method includes planting paddy rice s of a variety in a pot, controlling soil moisture through a jardiniere, controlling air temperature through a phytotron, carrying out soil water content and air temperature treatment each for an active tillering stage, a heading period and a grain filling stage of the rice variety, harvesting paddy rice seeds according to the water contents and temperature processed and unprocessed contrast sets after the paddy rice matures, and detecting the cadmium content of the polished rice. If the cadmium content of the polished rice is lower than natural standard of 0.2mg / kg, the rice variety has stable grains and is low in cadmium accumulation under similar cadmium pollution level. The method overcomes the defects that a conventional means for sorting low cadmium rice variety in natural field environment is poor in repeatability annually, Paddy rice varieties with low cadmium can be identified, with key cadmium absorption and fertility stages being not affected by lowering precipitation and sharp rise of temperature. The method makes contribution to agricultural grain safety and protection of people's health.

The invention relates to a rice variety Zhejiang 5 black-streaked dwarf virus resistant site qRBSDV17 and a molecular marker method thereof. According to the rice variety IR24 black-streaked dwarf virus resistant site and the molecular marker method, the filial generation F2 population of a rice black-streaked dwarf virus resistant variety Zhejiang 5 and a susceptible variety Lianyungang 3 is adopted as a mapping population; the rice black-streaked dwarf virus resistance is identified by using a combined method of natural field identification and improved laodelphax striatellus antixenosis identification; linkage analysis is carried out on virus resistance identification results and SSR marker data to obtain two SSR markers, closely linked to rice black-streaked dwarf virus resistance major QTL, on the chromosome 1; the resistance of a plant to the rice black-streaked dwarf virus can be predicated by detecting banding pattern data of the primer markers on the chromosome 1. Therefore, the selecting efficiency of black-streaked dwarf virus resistant rice is greatly enhanced and the rice breeding progress is accelerated.

The invention relates to SSR markers, closely linked to rice black-streaked dwarf disease resistance QTL, on a chromosome 4 and application of the SSR markers. According to the SSR markers, closely linked to rice black-streaked dwarf disease resistance QTL, on the chromosome 4, a filial generation F2 population of rice black-streaked dwarf disease resistant variety Zhejing 5 and susceptible variety Lianyuangang 3 is used as a mapping population; the rice black-streaked dwarf disease resistance is identified by using a combined method of natural field identification and improved laodelphax striatellus antixenosis identification; linkage analysis is carried out on disease resistance identification results and SSR marker data to obtain the two SSR markers, closely linked to rice black-streaked dwarf disease resistance major QTL, on the chromosome 4; and the resistance of a plant to the rice black-streaked dwarf disease can be predicated by detecting banding pattern data of the primer markers on the chromosome 4. Therefore, the selecting efficiency of black-streaked dwarf disease resistant rices is greatly enhanced and the breeding progress is accelerated.

The invention relates to a complete method for identifying and screening heat-resistant bottle gourd stocks, which belongs to the field of biology. Rapid screening of heat-resistant materials for variety breeding is based on establishment of a reliable heat resistance identification method. The natural field identification method is susceptible to environment and unable to accurately screen target materials. Therefore, inventing a complete method for rapidly and accurately identifying bottle gourd stock heat resistance by artificial stressing and statistical means is urgent. According to the technical scheme, the complete method includes: using bottle gourd high-temperature seeds to sprout and testing electric conductivity in the seedling stage; calculating identification indexes, namely relative germination rate (40-45 DEG C / 30-35 DEG C), relative germination index (40-45 DEG C / 30-35 DEG C) and relative electric conductivity (6h / 0h); and identifying and screening the bottle gourd seeds by the clustering function of software SPSS13.0. The complete method is simpler in operation flow, consumes less time, is lower in cost, and can be used for identifying heat resistance of the bottle gourd stock material more quickly, more accurately and more conveniently.

The invention provides an artificial source tensor electromagnetic exploration method with far references. The method comprises the following steps of: (1) arranging one or more far reference points while arranging measuring points, and synchronously recording a time variable of current sending of an artificial field source, and electromagnetic fields of the measuring points and the far reference points; (2) constructing a measuring point matrix X and a reference data matrix Xr; (3) utilizing the reference data matrix Xr to solve a natural electromagnetic field source polarized parameter [alpha], calculating a polarized parameter [beta] according to the time variable of current sending of the artificial field source, and then utilizing [alpha] and [beta] and X to solve a corresponding spatial modulus U of the measuring points to a natural field source and a corresponding spatial modulus V to the artificial field source; and (4) utilizing U and V to solve natural field tensor impedance and artificial field tensor impedance of each measuring point. Based on a conventional artificial field electromagnetic method, one or more far reference points are additionally arranged for data collection; and based on unified data equations, the natural field tensor impedance and the artificial field tensor impedance of each measuring point are simultaneously obtained by one time of processing, and earth electrical parameters required by interpretation are obtained.

The invention discloses a method of promoting fast and healthy cutting and rooting of hybrid napiergrass Guimu No.1 and relates to the technical field of vegetative propagation of herbage. The method comprises following steps: (1) selecting and segmenting of cuttage; (2) processing of cuttage; (3)-1 under natural field environment, processing the cuttage for rooting with proanthocyanidins; (3)-2 under manual control environment, processing the cuttage for rooting with proanthocyanidins. By means of the method of promoting fast and healthy cutting and rooting of hybrid napiergrass Guimu No.1 of the invention, there are more adventitious roots and newly grown capillary roots are promoted; the method greatly improves the rooting rate of cuttings, promotes the healthy growth of cuttings, increases the propagation rate of cuttings roots, and increases the transplanting survival rate. The method is simple, cheap, low cost and easy to operate, and is suitable for cuttage of asexual reproduction herbage such as the Chinese pennisetum series with high economic benefits.

The invention relates to a method for preparing a masterbatch of natural rubber and silica, including the following consecutive steps: doping the silica with an at least divalent metal element; preparing at least one dispersion of the thus-doped silica in water; contacting and mixing natural field-rubber latex and the aqueous dispersion of doped silica in order to obtain a coagulum; recovering the coagulum; and drying the recovered coagulum in order to obtain the masterbatch.

A bank angle of a vehicle can be accurately calculated using yaw axis data and roll axis data, and based on the calculated bank angle, vehicle illumination optics can be controlled to maintain a pattern of distributed light from the illumination optics to be generally horizontal. The calculated bank angle may be zeroed when the yaw axis data equals zero. The improved pattern of distributed light from the illumination optics illuminates a more natural field of view for the vehicle driver during a bank. In some embodiments, the vehicle illumination optics can include a primary illumination group and a plurality of side illumination groups.

The invention provides a method for identifying or screening disease-resistant rice material through rice blast seedling blast induced by field natural inoculation, and belongs to the technical field of plant disease protection and rice breeding. The method provided by the invention comprises the following steps of (1) diseased straw collection and storage; (2) induction variety selection and use; (3) induction variety selection and seeding of a first batch induction variety; (4) seeding of materials to be identified and screened and a second batch induction variety; (5) diseased straw inoculation; (6) diseased seedling inoculation; (7) observation, recording and identification. Under the natural field conditions, the rice blast seedling blast is induced by inoculation of diseased straw and diseased seedlings. The method has the advantages that the rice seedling period growth is not influenced; the rice blast physiological strain basic number is great; the diversity is rich; the multi-time field large-scale application can be realized; the operation is simple and convenient; the cost is low; an identification result is accurate; the screening effect is obvious. The method can be popularized and applied to rice blast seedling blast resistance breeding identification and screening and rice blast study.

The invention provides a method for enhancing stress resistance of alfalfa. The method comprises the following steps of (1) soaking the seeds of alfalfa in a mixed solution of hymexazol and glycine; (2) air-drying the soaked seeds in shady place and then sowing the dried seeds into artificial soil, which is composed of milk powder, chitosan, bentonite, dicyandiamide, potassium chloride, S-abscisicacid and agritol; (3) after the seeds grow rhizomes, transplanting the plants into natural fields, and injecting a mixed solution of bacillus subtilis and deuterium-depleted water into the stem partsof the transplanted plants; (4) 60-80 days later, spraying a mixed solution of gibberellin, ciclosporin, phosphate solubilizing bacteria, melatonin and multi-vitamins onto the leaves and the soil ofthe plants. The method for enhancing the stress resistance of the alfalfa has the advantage that the artificially cultivated alfalfa plants can enhance the stress resistance after being transplanted to planting environments such as poor soil and saline-alkali soil and further can achieve mass production.

The invention discloses a submarine electric field detection device applied to an underwater robot and a method for detecting polymetallic sulfide. The influence of a submersible vehicle body on a target electric field signal is reduced by adjusting the carrying position of an electric field sensor, and the influence on an electric field due to the change of the direction and posture of the submersible vehicle can be solved; three groups of electric field sensors in three directions are used for measuring three-component information of a submarine electric field; rotation correction is performed on a measurement result in combination with attitude data of the underwater robot, a difference matrix and a prediction natural field are constructed, a natural potential field is reconstructed byutilizing a least square inversion method, and whether polymetallic sulfide exists in the submarine or not is judged through negative anomaly in the natural potential field; effective application of the electric field sensor to the underwater robot is realized, the use is simple and efficient, the work is safe and reliable, and the near-seabed large-area scanning work can be completed in a short time.

The invention discloses a field standardization analysis method for groundwater leakage channel reconnaissance. The method is characterized by normalizing and standardizing the index of a single field according to a relation between the index and a leakage source, a relation between the index and a geological medium natural field background value, index variation of adjacent spaces, and index changes at different time to obtain the tracing index characteristic value, the background index characteristic value, the gradient index characteristic value and the timing index characteristic value of the single field index; according to data reliability and correlation with leakage, selecting different weights to superpose the respective characteristic values to obtain a unified field composite index characteristic value so as to achieve quantitative judgment, to make full use of limited data, to reduce interference information, to amplify leakage signals, and to locate leakage channels. The method processes the field analysis data and analyzes the possible groundwater leakage location information prominently.

The invention provides a text detection method in a natural scene based on deep learning, which belongs to the field of computer vision. The text detection method is specifically composed of a starting module, a character area recognition network and a capsule screening and classifying network. The method comprisesthe steps of firstly, enabling a starting module to reduce the parameters of a network, and placing convolution kernels of different sizes in the same convolution layer, so that the adaptability of the network to character features of different scales is enhanced; then detecting single characters in the picture by using a character region recognition network, and screening and classifying the detected single characters by using a capsule classification network so as to judge whether the detected single characters are characters; and finally, splicing the single characters into a text line through a character splicing method based on multi-feature map fusion and hole convolution. Compared with the prior art, the influence of factors such as the direction, the size and the position of the characters on the detection result can be reduced, so that the correct rate of character detection is ensured, and the robustness and the accuracy are further improved.

Despite efforts of eradication and sanitation, Phytophthora ramorum persists in the United States and has been a problem in commercial nurseries since 2001. Detection in a nursery immediately causes the nursery to be under quarantine until the P. ramorum can be proven to be eradicated. Treatment with the biological control agent Trichoderma asperellum showed promise in laboratory results to remediate P. ramorum-infested potting soil. Sixteen T. asperellum isolates were screened, found to have variable mycoparasitic activities, and further tested in natural field settings. Field plots having P. ramorum-infested soil were treated with T. asperellum, a chemical and two different commercial biological control products and compared to non-treated infested soil. After 8 weeks, P. ramorum populations were not detected in the soil treated with T. asperellum isolate 04-22 showing that T. asperellum isolate 04-22 could remediate soils infested with P. ramorum under natural field conditions.

The invention relates to a method for resisting water in soil of field experiment plots. The method comprises the following steps: (1) determining the total length and the total width of a test field according to the required area of the experiment plots and the length-width ratio of the experiment plots; (2) determining the line space and plot space of each plot according to the step (1); (3) removing the soil between every two lines and between every two plots in the step (2); (4) arranging water-resisting layers among the experiment plots in the step (3), and back filling the removed soil; (5) leveling and compacting the soil between every two lines and between every two plots of each test plot in the step (4); (6) leveling the surface of each test plot in the step (4) and compacting the contact sites between the experiment plots and the water-resisting layers; and (7) covering soil layers which can prevent wind erosion and solar radiation-caused aging and prevent being broken during work onto the water-resisting layers in the step (4). The method provided by the invention does not disturb the field soil, and ensures the natural field soil characteristics, and the objectivity of the experimental study is improved. The materials are easily accessible, and the fabrication cost is low.

The invention discloses a method for using a rolling-type three-dimensional controllable source electrical method to monitor and evaluate well drilling fracturing. A long-offset long lead is used forcarrying out power supply and field building, a non-polarized electrode is used for grounding, and a multi-channel receiver collects information of an artificial electric field and a natural electricfield. Evaluation is carried out through information collected before and after fracturing. An electric source with multiple strands of electrode wires connected in parallel is used for building the field, and the non-polarized electrode is used for measuring potential information of a ground surface natural field and a secondary field. A high-power generator is used for supplying a high-ampere current to the ground to build the field, a transmitter and a receiver are synchronized through a satellite, and continuous collection of a primary field and a secondary field is achieved. Due to a factthat the artificial source is adopted for building the field, the method can not influence microseism monitoring and can also be carried out simultaneously with the microseism monitoring. The technology is good in economic benefit, equipment cost is far lower than that of microseism monitoring equipment, monitoring construction cost is slightly lower than that of microseism, meanwhile, a monitoring effect is good, and sensitivity of electromagnetic waves to a fracturing fluid is far higher than that of seismic waves to the fracturing fluid.

The invention provides a method for preparing aldehyde / ketone by catalyzing alcohol oxidation with a ferric salt. The method comprises the following steps: mixing a compound shown in a formula (I) of a substrate, a ferric salt catalyst, a cocatalyst TEMPO (tetramethylpiperidinooxy), an amino acid ligand and a solvent; carrying out return flow agitation in an oxygen or air atmosphere for 1 to 60 h; then post-processing a reaction solution to obtain a product, namely a compound shown in a formula (II). According to the method provided by the invention, the ferric acid which is low in cost, easily available and environment-friendly is used as the catalyst; amino acids which are rich in resource, low in cost, easily available and easy to modify in a natural field are used as the ligand; the reaction substrate is high in applicability; first-grade benzyl alcohol, second-grade benzyl alcohol, allyl alcohol, heterocyclic aromatic alcohols and the like can be converted into corresponding aldehyde / ketone at high yield by adopting an oxidation system of the invention.