47 results about "Sensu stricto" patented technology

The invention discloses a W / Cu functionally gradient material and a preparation method thereof, and belongs to the fields of additive manufacturing technology and powder metallurgy. In terms of structure, the W / Cu functionally gradient material comprises a pure tungsten substrate on one side and a pure copper substrate on the other side, a gradient material is formed through copper infiltration ofa porous tungsten skeleton to connect the two substrates, wherein the porous tungsten skeleton is prepared by 3D printing, and then the porous tungsten skeleton copper infiltrated gradient material is prepared by a copper infiltration method; and the gradient material is prepared from the elements in percentage by mass: 50% of W and 50% of Cu. The W / Cu functionally gradient material adopts a digitalized additive manufacturing technology, a porous tungsten skeleton complex structure can be quickly formed, uniform distribution and mass gradient distribution of tungsten skeleton pores can be accurately controlled, and thus a novel technology means for preparing a properW / Cu functionally gradient material is provided.

A method of improving the growth of plants belonging to the family Cannabaceae sensu stricto by providing a plant nutrient solution about the plant roots and a gas mixture circulating about the plant shoot; by selecting the gas mixture and plant nutrient solution temperature independently of the other; and providing a plant nutrient solution to gas mixture temperature differential of approximately 0° F. or of at least approximately 15° F. during different phases of plant development, in order to change the plant development to improve a desired plant organ for industrial, scientific, and medical purposes. Infection of plants by Pythium, Fusarium, Verticillium, and Rizoctonia are treated or prevented by selecting a gas mixture temperature that is approximately 65 to 85° F. and a plant nutrient solution temperature that is approximately 35 to 65° F.

A conical cycloid wheel planet transmission means related to a differential teeth planetary reduction gear, the conical cycloid planet wheel is positioned in the main body and mounted in the bearing at the center of the eccentric shaft, forming a conical cycloid wheel planet engagement pair with the conical internal gears having the same cone angle, and forming a gap eliminating output device with the output components. The transmission gear according to the invention has zero transmission error and zero return difference feature, and greater load-bearing capacity.

The invention discloses a license plate character recognition method based on adaptive position segmentation, and belongs to the technical field of license plate recognition, and the method comprisesthe steps: building a deep neural network model which comprises a basic network, a license plate position correction network, a license plate character segmentation network and a license plate character recognition network; collecting license plate sample images are collecte, training the constructed deep neural network model, and obtaining an adaptive character segmentation recognition module; and carrying out license plate character recognition on the to-be-recognized license plate image by using an adaptive character segmentation recognition module. According to the method, the steps of license plate position correction, license plate character segmentation, license plate character recognition and the like are not strictly distinguished, license plate position correction, license platecharacter segmentation and character recognition are directly completed with the help of a deep neural network structure model, and license plate recognition accuracy and recognition speed are both considered.

A method and system of and for extraction or removal of phytochemicals from plants, including those of the plant family Cannabaceae sensu stricto. More specifically, a method and system for extracting essential oils from plants, such as cannabis, without the use of a solvent.

The invention discloses a saturable absorption optical fiber based all-fiber multi-wavelength passive Q-switched laser which comprises optical fiber devices of a pumping source, a wavelength division multiplexer, a gain fiber, an isolator, a saturable absorption optical fiber, an output coupler and the like; the wavelength division multiplexer, the gain fiber, the isolator, the saturable absorption optical fiber and the output coupler are sequentially spliced in a welded manner through a fusion splicer to form an optical fiber loop; the pumping source is spliced on the optical fiber loop in a welding manner through the wavelength division multiplexer. Multi-wavelength selection and passive Q-switch for the fiber laser b the aid of the saturable absorption optical fiber; multi-wavelength intervals can be adjusted according to the length of the saturable absorption optical fiber, the output frequency can be adjusted through the pumping source. The laser has the advantages of, strictly speaking, an all-fiber structure, compact size, stable output parameters, high environment adaptability and the like.

A Raman scattering method for measuring a GaN thermal expansion coefficient includes the following steps that 1, a sample is scribed, sampled and cleaned; 2, variable-temperature Raman testing is performed on the sample; 3, linear fitting is performed on a testing result, and the linear fitting slope and intercept are extracted. According to the extracting result, the thermal expansion behavior of a solid material is tested and represented in combination with the physical meaning of Gruneisen parameters. The variable-temperature Raman scattering technology is adopted, Raman scattering is utilized for obtaining the relation between Raman phonon frequency shift and temperature, nondestructive testing and representing can be accurately performed on thermal expansion behaviors of epitaxial layer film two-element and multi-element alloy systems of GaN, AlN, InN and other III group nitrides, and therefore it is avoided that in a common representation method, the sample is damaged, and formula derivation and mathematical calculation are complex; because no strict requirements for the shape and size of the sample exist, the thermal expansion behaviors of all kinds of semiconductor materials can be conveniently tested, and the method is simple, easy to implement and small in error.

The present invention relates to an air purifier, especially an air purifying island. An air purifying island for filtering, purifying and cooling the ambient air is provided, which comprises a draught fan and a control system. One side of the air inlet of the draught fan is provided with a weak base spray chamber and a water spray chamber which is filled with packing layer. The invention is a new device for treating the ambient air pollution, and is an air purifying island for filtering, purifying and cooling the ambient air. The purification is preliminary filter absorption and is not proper air purification. Even the purification is only preliminary purification, the cost is high for huge space, but the ambient air quality can be improved to a new level, and the possibility of commercial scale application of large-scale ambient air purification system in city ambient air purification is provided.

The invention discloses a low-temperature resistant lactic acid bacterium for producing bacteriocin and an application thereof. The bacterial strain is named as Lactococcus lactis MD-1 in class, and has been preserved in the China Center for Type Culture Collection in Wuhan University, Wuhan, China on December 18th, 2012; the preservation number is CCTCCNO:M2012533. The growth temperature range of the lactic acid bacterium (Lactococcus lactis MD-1) provided by the invention is between 4 DEG C and 24 DEG C, the optimum growth temperature is about 15 DEG C, the lactic acid bacterium belongs to proper lactic acid bacteria, and has strong growth activity and specific growth rate under a low-temperature condition, the bacteriocin with strong bacteriostatic activity can be generated, the lactic acid bacterium (Lactococcus lactis MD-1) and a metabolic product thereof are applied to low-temperature biological preservation of the food, and a foundation is established for application of a food preservation technology in the future.

A pouch (2) includes: a first, inner, envelope (1) which is closed, delimiting a first space (6) forming a pouch stricto sensu (1) intended for receiving a biopharmaceutical product or device; a second, outer, envelope (8) which is closed, delimiting a second space (9) in which is located the first envelope / pouch stricto sensu (1); a spacer element (11); at least one tracer gas located in the first space (6) or in the intermediate space (14) at a partial pressure different from that of the intermediate space or of the first space; and at least one colorimetric detection layer (12), responding to the concentration of tracer gas which reaches it by changing from a first color to a second color, and being an integral part of a wall (3, 4) of the first envelope / defined pouch (1) and / or of a wall (13) of the second envelope and / or of the spacer element.

The invention discloses an all-fiber active Q-switched laser based on a saturable absorption optical fiber. The all-fiber active Q-switched laser based on the saturable absorption optical fiber comprises a fiber laser unit and an active Q-switched unit (20), wherein the active Q-switched unit (20) comprises the saturable absorption optical fiber (5), a saturable absorption optical fiber pumping wavelength division multiplexer (6), a saturable absorption optical fiber pumping source (8) and a function generator (9). The saturable absorption optical fiber (5) and the saturable absorption optical fiber pumping wavelength division multiplexer (6) are connected into an optical fiber link of the fiber laser unit in series. The function generator (9) is used for conducting electric pulse modulation on the saturable absorption optical fiber pumping source (8). According to the all-fiber active Q-switched laser based on the saturable absorption optical fiber, traditional saturable absorption passive Q-switching is converted to active Q-switching, continuous adjustment of the parameters such as the pulse width and the repetition frequency of the pumping source is achieved through the externally arranged function generator, and then the proper all-fiber structure is obtained. The all-fiber active Q-switched laser based on the saturable absorption optical fiber has the advantages of being reliable in performance, stable in output parameter, resistant to vibration, high in environmental adaptation and the like.

A DNA molecular computer of miniflow control chip consists of operation media formed by DNA molecule, DNA molecular operator using miniflow control chip as operating platform, DNA molecular storage using DNA molecule as storing media and using miniflow control chip as operating platform, controller using electronic computer and detector as core. It features that controller is connected separately to DNA molecular operator and to electrode on miniflow control chip of DNA molecular storage.

The invention belongs to the technical field of nano materials and particularly relates to a method for continuously preparing soft agglomerated nano magnesium carbonate. Reagent-grade manganese sulfate and a precipitant are used as materials, preventing the reduction in the quality of finished manganese carbonate due to the introduction of impurities to the materials. A continuous feeding mode is used in the synthetic process, so that reaction is continuously carried out and production efficiency is improved. The manganese carbonate prepared herein is less than 30 nm in particle size and is strictly a nano material, the prepared manganese carbonate is spherical and is softly agglomerated, and soft agglomeration is advantageous in that agglomeration easily turns to disagglomeration in use to obtain nanoparticles of primary particle size.

The invention is a microflow control chip DNA molecular memory, comprising memory medium, reaction medium and microflow control chip, where the memory medium comprises known-sequence containing short-chain DNA memory cell molecules, initial operating DNA blank molecules and DNA memory molecules standing for superposed results by biochemical reaction; the microflow control chip is provided at least with memory cell region, endonuclease reaction region, enzyme-link reaction region, and result output region, where the endonuclease reaction region, enzyme-link reaction region, and result output region are interconnected through microchannel and the memory cell region is connected with the enzyme-link reaction region through microchannel. The invention adopts the microflow control chip technique to replace the widely used test tube or surface operation in the current DNA calculating course for the first time, and provides a practical possible platform for constructing a proper DNA computer by the character that the microflow control chip operates accurately and controllably and can be integrated in high flux and large scale.

The present invention discloses an apparatus to implement a m=n Non-Blocking Minimal Spanning Switch, where n=the total number of data input signals and m=the total number of data output signals and m=the number of crossbar connections in each switch. Data is input to the switch as a plurality of frames, whereby each crossbar connection contains a framer which detects framing patterns in the data. Skewed data is re-aligned and buffered so that the data output by each crossbar connection is equal and identical, thus any crossbar connection may be used to ensure a connection, eliminating the possibility of data interrupts.

The invention discloses a watershed ecological drought evaluation and prediction method. Currently, ecological drought is not strictly defined, and a drought index framework which is generally applicable and takes ecological health of rivers is not formed yet. A monthly flow process simulated by a vertical mixed production flow model of a watershed grid unit, a P-III distribution function is adopted for fitting theoretical probability distribution, and the skewed distribution is converted into standard normal distribution to obtain ecological drought index value of the watershed. The ecological water demand quantity of a river channel is calculated according to the Tennant method, the ecological runoff quantity values required by different levels are standardized, and the drought level dividing standard of the ecological drought indexes of the watershed is determined. The evaluation range of the current drought index is expanded, and an ecological technical support can be provided forcomprehensive building of a watershed drought early-warning and monitoring system and watershed health. Forecast and prediction can be carried out on further changes of the ecological drought by combining the meteorological and hydrological information.

The invention discloses a drainage basin scale sudden drought accurate identification method, and belongs to the technical field of drought forecasting and early warning. The drainage basin scale sudden drought accurate identification method comprises the following steps: firstly, constructing a basin VIC land surface hydrological model based on hydrometeorological observation data and geographicspace data, and obtaining a soil water content process simulated by the model through hydrological process verification; secondly, based on the highest air temperature and the soil water content, scientifically defining an accurate sudden drought identification index by adopting a strength change rate (a rapid degree index) and a short-time scale scheme; and finally, by constructing a single-sitesudden drought magnitude index and a unit time sudden drought severity and coverage area index, determining a grading standard of the basin sudden drought event. At present, there is no strict definition related to sudden drought events, and there is no sudden drought accurate identification index system. The drainage basin scale sudden drought accurate identification method can achieve the precise recognition of the sudden drought event, and provides a scientific reference basis for the improvement of the monitoring capability of the sudden drought event of the drainage basin, the avoidance of the sudden drought risk, and the guaranteeing of the grain safety.

The invention relates to a wind turbine rotor aerodynamic performance evaluation method based on a three-factor fitting integration method. The method adopts a fitting mode to calculate the corresponding non-dimensional coefficients of the axial thrust, the torque and the power, and considers that the integrand function which is not considered in the traditional calculation method is discontinuousand can not be integrated strictly, and the parameters of each blade surface are different from each other and the deviation of the performance result calculated directly by the integration form is large. Compared with the traditional calculation model of wind turbine performance, the method is more scientific and accurate, and the processed result is more reliable.

The invention relates to a flat-field apochromatic microscope objective, and belongs to the field of optical technologies. The flat-field apochromatic microscope objective comprises first to tenth lenses which are coaxially arranged in sequence from an object side to an image side, and is characterized in that the first lens is a hemispherical lens with positive focal power; the second lens is a concave-convex lens with positive focal power; the third lens and the fifth lens are biconvex lenses, the fourth lens is a biconcave lens, and the third lens, the fourth lens and the fifth lens form a three-cemented-lens group with positive focal power; the sixth lens is a biconvex lens with positive focal power; the seventh lens is a biconvex lens, the eighth lens is a biconcave lens, and the seventh lens and the eighth lens form a double-cemented-lens group with negative focal power; the ninth lens is a meniscus lens with negative focal power; and the tenth lens is a concave-convex lens with negative focal power. The flat-field apochromatic microscope objective has a large numerical aperture and a large field range, realizes a flat-field apochromatic design in a more strict sense, and is simple in structure, reasonable in design and easy to manufacture.

The invention provides a local learning regularization-based depth matrix decomposition method and an image clustering method, wherein the depth matrix decomposition method comprises the steps of S10obtaining a data matrix Y according to a picture to be clustered; S20 constructing an objective function based on the data matrix Y S30 using an iterative weighting method according to the objective function C to output a basis matrix Ni and a coefficient matrix Mi to complete the decomposition of the data matrix Y. Compared with the traditional absolute non-negative matrix factorization, not onlythe deep semi-non-negative matrix factorization is used to classify the data accurately and efficiently, but also some attribute information is combined to minimize the prediction cost of each region.

The invention is a microflow control chip for DNA molecular computer, characterized in that: it is integrated with DNA molecular operator and DNA molecular memory. The invention adopts the microflow control chip technique to replace the widely used test tube or surface operation in the current DNA calculating course for the first time, and provides a practical possible platform for constructing a proper DNA computer by the character that the microflow control chip operates accurately and controllably and can be integrated in high flux and large scale.

The invention relates to a micro flow control chip kit used in DNA computer. The kit is set a DNA computer micro flow control chip, a set of restriction endonuclease reaction reagent, a set of ligase reaction reagent, a set of polymerase chain reaction reagent, and a bottle of electrophoretic buffer and standard nucleic acid segment. The invention firstly substitutes micro flow control chip technique for the current using test tube or superficial operation, and offers a possible flat roof for setting a proper DNA computer by its exact and controllable operation and large-scale integration.

The invention discloses a magnetic suspension door, and relates to the technical field of magnetic suspension. The magnetic suspension door comprises a magnetic suspension rail and a movable door under the magnetic suspension rail; the magnetic suspension rail comprises a rail beam, a suspension slider and permanent magnets; a fixed rail is fixed on the lower surface of the rail beam; the permanent magnets comprise a fixed permanent magnet array and a suspension permanent magnet array; the fixed permanent magnet array is arranged on the bottom of the fixed rail and the suspension permanent magnet array is arranged in the suspension slider to achieve homopolar repulsion between the suspension permanent magnet array and the fixed permanent magnet array; the suspension slider is suspended below the fixed rail through the repulsive action of the suspension permanent magnet array and the fixed permanent magnet array; the movable door is fixed at the lower end of the suspension slider; and the magnetic suspension door further comprises a driving device. The magnetic suspension door does not need to be provided with a rail on the ground, does not need to be opened or closed manually, doesnot have mechanical friction between the rail and a door body, and is a proper magnetic suspension door.

The invention discloses a method for tracking equilibrium solution manifold of an electrical power system based on a curvature radius. The equilibrium solution manifold of the electrical power system is tracked according to a variation trend of the equilibrium solution manifold. The method comprises the following steps: using an automatically-changed homotopic algorithm to acquire an initial equilibrium point from any point, using the curvature radius to amend step length, and using a method similar to dichotomy to search branch points on the equilibrium solution manifold. The method solves the problems that the initial equilibrium point is difficult to obtain, the selection of the step length is unreasonable, the distortion of an area with high bending degree is serious, the tracking speed of an area with low bending degree is not high and the searched branch points are not equilibrium points in strict significance when a traditional continuation method is used for tracking the equilibrium solution manifold of the electrical power system.

The invention discloses a living plant leaf stoma imaging viewer. In the viewer, a power module is used for providing electric energy for the whole system, a 4.3-inch capacitive touch screen is connected to an MCU minimum system module through a flexible flat cable and used for achieving man-machine interaction, a clock module is connected to the MCU minimum system module and used for providing a time reference for the whole system, the input end of a voltage detecting module is a lead storage battery in the power module, the output end of the voltage detecting module is connected to an AD interface of the MCU minimum system module and used for detecting residual electric quantity of the lead storage battery in the power module, and a steering gear shading module is connected to a PWM interface of the MCU minimum system module and used for controlling the steering direction of a shading plate. Proper living plant leaf stoma image observation is achieved, in other words, a leaf stoma image is obtained on the premise that a leaf is not separated from a plant body and carries out normal photosynthesis.