255results about How to "Rapid contraction" patented technology

The present invention provides porous electroactive hydrogels, the deformation angle of which is controlled by electroactuation, and methods for preparing and using such hydrogels.

The present invention relates to a microsurgical device and methods of its use for treatment of various conditions including eye diseases, such as glaucoma, using minimally invasive surgical techniques. The invention relates to a dual-blade device for cutting the trabecular meshwork (TM) in the eye. The device tip provides entry into the Schlemm's canal via its size (i.e., for example, 0.3-0.2 mm width) and configuration where the blade tip curves up providing a ramp-like action for cutting the TM. The dimensions and configuration of the blade is such that an entire strip of TM is removed without leaving TM leaflets behind and without causing collateral damage to adjacent tissues.

The invention belongs to the technical field of short term power load forecasting, and discloses a power load forecasting method based on improved exponential smoothing and a gray model. The method includes the following steps: inputting original power load real-time data, and conducting a single exponential smoothing on the original power load real-time data, weakening the randomness of the original power load real-time data, such that the original power load real-time data approaches exponential development trend; predicting a smoothed sequence by using a gray forecasting model which optimizes background value; conducting inverse exponential smoothing on the forecasting result and returning the result to original power load data and a forecasting value at a next forecasting moment; determining whether the result reaches the requirements of knitting fitting errors, and outputting a forecasting result. According to the invention, the method expands the application range of the gray forecasting model, shortens search intervals, has higher forecasting reliability as high as 97%, can the meet requirements for maintaining the average error of short term power load forecasting at approximately 3% so as to address the problem of short term power load forecasting in future development of intelligent power grids.

A tool for binding and securing the binding of a load, said binding including a tube having left and right hand threads at opposed ends and sides and threaded shafts mated to the threads whereby turning of the tube relative to the shafts produces common insertion or extension of the shafts relative to the tube. A gear secured to the tube and a pivotal housing with handle surrounding the gear. A pawl carried by the housing and moveable into and out of engagement with the gear in either rotative direction whereby handle movement either contracts or extends the shafts simultaneously from the tube. A centered position of the pawl and a detent in said pawl engaged by a spring biased pinion that retains the pawl as desired out of engagement with the gear for free turning of the tube. The handle may be pivoted to a parallel position with the tube for convenient storage and safety, and a lock may be applied to lock the pawl in a position for contracting the shafts to prevent inadvertent release from the load binding condition.

The invention belongs to the technical field of high polymer materials, and relates to a sensible hydrogel, in particular to a hydrogel with pH sensibility and temperature sensibility and a preparation method thereof. The preparation method comprises the following steps: synthesizing hydroxy propyl cellulose and acrylic acid or acryloyl chloride into acrylic acid cellulose ester and copolymerizing the prepared acrylic acid cellulose ester and acrylic acid monomer to form the hydrogel. The hydrogel comprises hydroxy propyl cellulose chain segment with pH sensibility and temperature sensibility and acrylic acid chain segment with pH sensibility, and meanwhile, the hydrogel has pH sensibility, temperature sensibility and degradability and flexible responsiveness to the pH, can rapidly generate volume expansion or contraction, and has favorable mechanical property, good intellectuality and easy and feasible synthetic method, and the temperature sensibility is influenced by the pH value of the solution.

A separator for non-aqueous rechargeable lithium batteries and a non-aqueous rechargeable lithium battery including the separator are provided. The separator includes a separator body and a composite including an organic compound and an inorganic compound supporting the separator body, where the organic compound has a higher melting point than that of the material composing the separator body, and the inorganic compound includes an element selected from the group consisting of 1A, 2A, 3A, 4A, 3B, and 5B elements from the periodic table, and combinations thereof, and at least one moiety selected from the group consisting of oxides, hydroxides, carbonates, phosphates, sulfates, nitrates, alkoxides, and combinations thereof.

The invention discloses an improved inner-pushing type clamping device for a numerical control tube bending machine and belongs to the field of numerical control tube bending machines. The improved inner-pushing type clamping device solves the problems that an oil cylinder of an existing clamping device for a numerical control tube bending machine is poor in rotation sealing in the autorotation process and is likely to leak oil, and the service life is short. The improved inner-pushing type clamping device comprises a flexible chuck, an oil cylinder and a component, wherein the flexible chuck and the oil cylinder are connected through the component. The component for connecting the flexible chuck and the oil cylinder comprises a chuck pushing bush and a rotating rod. The oil cylinder comprises a cylinder body and a piston rod arranged in the cylinder body, and the chuck pushing bush is arranged at the stretching-out end of the piston rod, is fixed relative to the piston rod in the axial direction and can relatively rotate around the axis. The rotating rod is arranged in the piston rod, and is connected with the chuck pushing bush in the connecting mode that the rotating rod and the chuck pushing bush can rotate synchronous and move relatively in the axial direction. The flexible chuck is arranged at one end of the rotating rod. By means of the improved inner-pushing type clamping device, the problem of oil leakage caused by poor rotation sealing of the oil cylinder can be solved, so that the working stability of the clamping device is improved, and the service life is prolonged.

The invention relates to the field of environmental control of a sunlight greenhouse, in particular to a multi-stage internal heat insulation shading system for a greenhouse and the greenhouse containing the system. The internal heat insulation shading system comprises multi-stage internal heat-insulation shading screens, a screen pressing line and a screen supporting line, a plurality of pulling screen mechanisms, a driving shaft and a motor for driving the rotation of the driving shaft; each pulling screen mechanism comprises a driving steel cable and a reversing pulley, wherein one ends of the driving steel cables are wound on the driving shaft, and the other ends of the driving steel cables are wound on the reversing pulleys; one sides of the inner heat insulation screens are fixed, and the other ends of the inner heat insulation screens, as retracting and releasing ends, are respectively connected with the driving steel cables. The internal thermal insulation shading system not only has the advantages of simple structure, saving production cost, but also can flexibly regulate and control the indoor temperature and light according to the different needs of temperature and light by crops in different growing seasons and different time. Compared with traditional internal insulation and shading systems, the system provided by the invention has a greater application and promotion value.

A drug carrier with thermal sensitivity, a manufacturing method thereof, and a use thereof are disclosed. The drug carrier comprises a nano-magnetic particle, a drug, a composite polymer, and a dense silica shell. The nano-magnetic particle and the drug are encapsulated in the composite polymer which is formed by self-assembly a water-soluble polymer (such as poly vinyl alcohol) and a thermosensitive copolymer (such as Pluronic F68 or Pluronic F127). The stability and drug release of the drug carrier a can be adjusted by combining PVA and thermosensitive copolymer with a different ratio. When an external magnetic field was applied, the cores exhibit significant size shrinkage and the diameter of the drug carrier decreases more than 10 folds due to the change of temperature, which causes burst-like drug release because of shell destruction and physical collapse of the drug carrier.

The invention relates to the field of ceramic sanitary wares, and in particular, discloses a ceramic raw material rough crushing device. The ceramic raw material rough crushing device comprises a shell, first springs, second springs, a polishing plate, a grinding head and electromagnets; an annular groove for mounting the polishing plate is formed in the inner wall of the lower end of the shell; the radian of the polishing plate is the same with the radian of the inner wall of the shell; multiple first springs are arranged between the polishing plate and the inner wall of the annular groove; one ends of the first springs are welded with the inner wall of the annular groove, and the other ends of the first springs are welded with one side of the polishing plate; multiple grinding teeth, opposite to the side surfaces of the grinding head, are arranged on the other side of the polishing plate; multiple mounting grooves are formed in the side surfaces of the grinding head; the second springs and the electromagnets capable of attracting the polishing plate are arranged in the mounting grooves; one ends of the second springs are welded with the inner walls of the mounting grooves; and the other ends of the second springs are welded with the electromagnets. The ceramic raw material rough crushing device can clean powder raw materials attached on the grinding teeth.

A betatron includes a betatron magnet with a first guide magnet having a first pole face and a second guide magnet having a second pole face. Both the first and the second guide magnet have a centrally disposed aperture and the first pole face is separated from the second pole face by a guide magnet gap. A core is disposed within the centrally disposed apertures in an abutting relationship with both guide magnets. The core has at least one core gap. A drive coil is wound around both guide magnet pole faces. An orbit control coil has a contraction coil portion wound around the core gap and a bias control portion wound around the guide magnet pole faces. The contraction coil portion and the bias control portion are connected but in opposite polarity. Magnet fluxes in the core and guide magnets return through peripheral portions of the betatron magnet.

The invention discloses a production method of an elastic puffed silk quilt, relating to the technical field of home textile preparation. The method comprises cocoon selecting, cocoon cooking, degumming, pupae removing, ring sleeving, thread insertion and wire drawing, and is characterized by also comprising the steps of (A) firstly soaking cocoons into purified water before cooking the cocoons, wherein the water temperature is 50-70 DEG C and the soaking time is 3-5 minutes, putting the cocoons and the purified water into a vacuum container after soaking is completed, adding an alkaline swelling agent of which the pH is 9-10 for cooking, wherein the cooking temperature is 90-100 DEG C and the cooking time is 5-10 minutes; and (B) soaking natural silk into the purified water after wire drawing is completed, wherein the water temperature is 70-80 DEG C and the soaking time is 3-5 minutes, soaking the natural silk into the purified water containing an acid swelling agent, wherein the water temperature is 20-30 DEG C and the soaking time is 2-4 minutes, and finally drying and arranging the natural silk. Compared with the prior art, the production method has the advantage that the problem that the elasticity of an existing silk quilt is easily reduced can be solved.

An anti-collision support with a corrugated face belongs to the technical field of coal mine roadway supporting. Compared with the U-shaped steel support in the prior art, a corrugated face structure is additionally arranged on the middle section of an arc-shaped beam of the support, due to the corrugated face structure, the whole or part of the support can contract rapidly when encountering rock burst, the avoidance of surrounding rock is realized by the contraction of the support, and further the avoidance and energy consumption of the whole support are realized; according to the anti-collision support provided by the invention, the traditional mode of connecting two adjacent arc-shaped beams by a clamp cable is abandoned, a W-shaped elastic strip buckle is adopted to be a limiting member and realize composure control, and when rock burst is encountered, connecting components between the beams can dislocate mutually along with the two adjacent beams and follow the beams to move, so that the failure of connection at the connecting part of the two adjacent arc-shaped beams is avoided, meanwhile the contraction of the whole support is facilitated, and the stability of connection is guaranteed.