393results about How to "Position is easy to control" patented technology

The invention provides a cell-biological scaffold complex and a 3D printing forming method thereof. The cell biological scaffold complex comprises a biological scaffold with an actual deficit condition similar to the tissues and organs of patients, a nanometer fiber layer printed on the biological scaffold, capable of simulating natural extracellular matrixes, and beneficial for the adhesion, reproduction and growth of cells, and cell suspension printed on the nanometer fiber layer. According to the actual deficit condition of the tissues and organs of patients, the cell-biological scaffold complex needed by patients can be precisely printed by adopting the bioprinting forming method.

The invention provides an aeroelastic flutter generator, which comprises a wing panel, a platform, a translation return mechanism which is coupled between the platform and the wing panel, and a torsion return mechanism which is coupled between the platform and the wing panel. The aeroelastic flutter generator can make the aeroelastic phenomenon easy to be observed by naked eyes and make the sinkage rigidity and the torsional rigidity adjustable, and has limitation protection.

The present invention relates generally to infant support garments configured for supporting and maintaining an infant against a wearer of the garment. In one exemplary embodiment, the garment provides a first pocket suitable for placement and securing of an infant. The garment further provides a second pocket that is adjustable to provide further securing and support of the infant. In one particular exemplary embodiment, the garment further provides a third pocket for added securing and support.

The invention discloses a method and device for preparing a three-dimensional porous support for tissue engineering. The preparation method comprises the following steps of: 1, slicing and layering a support according to a certain thickness firstly to obtain two-dimensional cross section information of each layer of the support; 2, preparing a first layer slice of the support by using a three-dimensional inkjet printing spray head under the control of CAD software, dibbling microcapsule particles on the first layer slice of the support by using a bio-microcapsule preparation nozzle, and stacking the microcapsule particles to form gaps required by a support design; 3, moving the three-dimensional inkjet printing spray head and the bio-microcapsule preparation nozzle for the height of one layer slice of the support to finish the forming preparation of a second layer of the support; and 4, repeating the method layer by layer until the three-dimensional porous support is prepared. The device for preparing the three-dimensional porous support is suitable for the preparation method, and comprises a three-dimensional inkjet printing forming machine, a jetting device, a bio-microcapsule dibbling device and a control system.

Method for preparing nanomaterial array system by porous alumina template nano mask method is constituted by following steps: (1) adopting the porous pellumina as templet of the mask and covering it on the base material; (2) forming nano granule array system on the base material by coating technique; (3) removing porous pellumina template to get nano granule array system; (4) processing a chemical reaction conversion in situ by the nano granule array prepared from step (1)(2)(3), further obtaining nano granule array system of the other materials. The produced nano material has an good controllability in dimension, orientation and position and a wide adjustable property (5-200 nano) of the diameter of the nano material. The invention can produce multifunctional nano granule, nano wire, nano tube or nano column array system and assembles nano material on a plurality of nano materials.

The invention provides a gray scale control structure which comprises a first substrate, a light extraction layer, an electrode layer, a liquid crystal layer, a filter layer and a second substrate which are sequentially arranged in a laminating mode. A plurality of side-by-side strip electrodes are arranged in the electrode layer, so that a lens unit can be formed in the liquid crystal layer; the filter layer comprises a light emergence strip and a black matrix which are arranged side by side; the light emergence strip is opposite to the lens unit; a light extraction grating is arranged in the light extraction layer; the light extraction grating is opposite to the light emergence strip; the projection of the light emergence strip on the light extraction layer covers the light extraction grating. The gray scale controls the size of a gray scale by regulating and controlling a deflection direction of incident light, meanwhile, can improve light transmittance, and has a high contrast ratio.

The invention discloses a buckling constraint type steel-beam-and-column end-plate connection joint and a steel structure building, and belongs to the field of a building steel structure. The buckling constraint type steel-beam-and-column end-plate connection joint comprises a steel beam and a steel column; an end connecting piece is arranged at a joint of the steel beam and the steel column; the end connecting piece comprises a pair of horizontally arranged flange connecting plates and end plates arranged at the tail ends of the flange connecting plates; the free ends of the flange connecting plates are used for being connected with upper and lower flanges of the steel beam; both ends of the end plates are used for being connected with flanges of the steel column; the middle parts of the flange connecting plates are weakened regions. According to the buckling constraint type steel-beam-and-column end-plate connection joint and the steel structure building which are disclosed by the invention, seismic performance is superior, and ductility and the energy consumption ability of a steel frame structure can be obviously improved; plastic hinges are moved outside, so that appearance of the plastic hinges at the welded positions at the end parts of the steel beam is avoided; after an earthquake, the steel beam and the steel column are not damaged, and can be reused only by replacing or repairing the end connecting pieces; moreover, the buckling constraint type steel-beam-and-column end-plate connection joint is convenient to mount.

The invention relates to an oil gas exploitation apparatus and method. The apparatus includes at least an exploitation unit, a needle tubing, and a self-propelled nozzle arranged at a second end of the needle tubing. The exploitation unit includes a jet pipe nipple and an adjusting pipe nipple detachably connected to the jet pipe nipple, wherein penetrating installation holes are arranged on a sidewall of the jet pipe nipple, and the adjusting pipe nipple is provided with oil holes for the oil gas flowing from a stratum into an inner cavity of the exploitation unit. In the original state, a first end of the needle tubing is arranged in the inner cavity of the exploitation apparatus. The second end of the needle tubing is inserted in the installation holes. During a process for pumping the liquid to the exploitation apparatus, the needle tubing extends in a storage stratum so as to form an exploitation pore passage. In the oil gas exploitation process, the oil gas exploitation apparatus has high effectiveness for the reconstruction of the storage stratum and good oil gas output.

A swinging link mechanism, provided on a conveyance truck, for raising and lowering a vehicle body held on a supporting member includes a first arm having a fixed end section which is attached to the conveyance truck in a vertically rotatable manner by means of a horizontally oriented support axle, a second arm having a fixed end section supported rotatably on the free end section of the first arm and having a supporting member provided on the free end section thereof, and a third arm coupled rotatably between the conveyance truck and a prescribed position on the second arm. Third arm is caused to rotate the second arm in the opposite direction to the first arm in response to rotation of the first arm, thereby to make the lower movement path of the supporting member to extend substantially vertically. Hence, the vehicle body can be raised or lowered in a substantially vertical movement path, and the position and attitude of the vehicle body can be controlled readily, by adopting a link mechanism of a simple configuration.

The invention discloses a bobbin assembly capable of realizing peripheral unwinding. The bobbin assembly comprises a bobbin, wherein a rotating shaft is arranged in the bobbin; a rotary elastic component is arranged between the rotating shaft and the bobbin; one end of the rotary elastic component is connected with the rotating shaft; the other end of the rotary elastic component is connected with the bobbin. The rotary elastic component is a coil spring, a torsional spring, a corrugated telescopic spring or a rubber band. The rotating shaft and the bobbin are rotatably connected through a bearing. The bearing is adjacent to the rotary elastic component, and an isolation retainer ring is arranged between the bearing and the rotary elastic component. According to the bobbin assembly disclosed by the invention, cheese is fixedly arranged on the bobbin of the bobbin assembly in a sleeving manner and used as warp yarns for 3D weaving, the unwound warp yarns are always at a tensioned state, are not easily entwined per se and are further not easily twined with other yarns, and therefore normal proceeding of 3D weaving can be ensured and the quality of a 3D fabric is greatly improved.

A stripping device for a cable stripping machine capable of changing a cutter extension length relates to the technical field of cables, and comprises a shell. A middle part of the shell is movably connected with uniformly distributed cutter bars, inner sides of the cutter bars are fixedly connected with stripping cutters, the inner sides of the cutter bars are fixedly connected with springs I, and the two sides of a movable block are rotatably connected with pulleys. By using the stripping device for the cable stripping machine capable of changing the cutter extension length, a rotation discis cooperated with a limiting rod for use; during usage, a cable extends into the middle part of the shell; according to a diameter of the cable, the rotation disc is rotated and adjusted, the rotation disc drives a limiting rod to move through a limiting hole so that the limiting rod drives the cutter bar to move, the extending length of the stripping cutter is changed, the cable sheath is cut bythe stripping cutter; and the length of the stripping cutter cutting into the cable sheath is equal to a thickness of an outer sheath of the cable so that an effect of changing the extending length of the cutter is achieved, an application of the stripping device is wider, production cost is saved, and production efficiency is improved.

The invention provides a thin-walled vane nine-point control variable-allowance milling method based on Newton interpolation. Modeling is carried out by utilizing a three-dimensional modeling software, and an auxiliary surface and a boundary surface are formed, so that a driving surface is determined by utilizing a section line lofting process. Cutter machining paths are generated according to the driving surface, and the machining allowance of each cutter position point on each machining path is determined by adopting a Newton interpolation method. Finally, vanes are cyclically processed according to symmetrical milling rules. Compared with a traditional longitudinal fixed-allowance cutting and spiral milling method, the thin-walled vane nine-point control variable-allowance milling method has the advantages that technical problems, such as large torsional deformation, low contour precision, poor section position tolerance and difficult error control, in the machining process can be solved; and by adopting a Newton interpolation process allowance fine adjustment method, surface quality can be more comprehensively controlled, and problems, such as large bending deformation, poor section position tolerance and low surface contour precision, in the machining process can be effectively solved.

The present invention relates to the preparation field of nanometer materials, disclosing a method for producing a single piece of nanometer material in a hole-shaped structure. First, a tiny hole is etched on a substrate, then metals or oxide films are positionally deposited on the bottom of the tiny hole, so that a single nanometer particle is formed in high-temperature annealing; or a single piece of one-dimensional nanometer material can be vegetated under the effects of metals or oxide films (such as catalytic action) through gas phase or liquid phase. The method has the advantages of simple technology and controllable location, which can realize the orientation growth of a single piece of nanometer material through controlling the position of the hole. The invention enables large-scale array type preparation with high efficiency.

The invention discloses a method for enhancing heterogeneous molecule-doped molybdenum disulfide based on electronic dynamic regulation, and belongs to the field of micro-nano manufacturing. The method comprises the following steps of step 1, enabling a femtosecond laser pulse sequence to focus onto the single or multiple molybdenum disulfide layers at the surface of a substrate, controlling the processing parameters and processing location of the femtosecond laser pulse sequence, inducing the defect mode with controllable degree and location at the surface of the molybdenum disulfide meetingthe preset use requirements, and enabling the molybdenum disulfide with defect mode/active point to effectively adsorb oxygen in air under the air environment, so as to obtain the controllable oxygenmolecule P-doped single or multiple molybdenum disulfide layers; step 2, dripping an N-doped organic matter/inorganic matter/biological molecule solution onto the single molybdenum disulfide layer with defect mode/active point, and waiting for natural airing, so as to obtain the organic matter/inorganic matter/biological molecule N-doped single molybdenum disulfide layer. The method has the advantages that the degree and location of the defect mode are controllable, the operation is simple and flexible, and the like.

This invention relates to semiconductor chip imbed baseboard three dimensional seal structure and its process method, which comprises the following steps: connecting load parts with at least one hole to first insulation layer and at least one conductor chip onto first insulation contained in the load holes; then forming second insulation layer onto load part and chips for adhesion and filling insulation resin into gap between load board and chip to form electricity connection to chip circuit layer; forming chip dissipation blind hole on first insulation layer to aid semiconductor chip to dissipate heat outside.

The invention relates to a light-emitting structure capable of improving light-emitting efficiency and controlling an emergent angle, which comprises a base plate unit, a light-emitting unit, a reflecting unit and a packaging unit, wherein the base plate unit is provided with a base plate body and a crystal placing area; the light-emitting unit is provided with a plurality of light-emitting diode (LED) grains which are electrically arranged on the crystal placing area; the reflecting unit is provided with a surrounding type reflecting colloid which is annularly formed on the upper surface of the base plate body in a coating way; the surrounding type reflecting colloid surrounds the LED grains which are arranged on the crystal placing area to form a colloid limiting space above the base plate body; the packaging unit is provided with a transmitted packaging colloid which is formed on the upper surface of the base plate body to cover the LED grains; and the transmitted packaging colloid is limited in the colloid limiting space, thereby improving the light-emitting efficiency of an LED packaging structure.

The invention discloses a three-group nitride micro-nano light-emitting device with an embedded active layer and a manufacturing method. The light-emitting device comprises an initial light-emitting device, a transparent conducting layer, a p-type electrode and an n-type electrode; the initial light-emitting device is sequentially provided with a substrate, a three-group nitride nucleating layer, a buffering layer, an n-type three-group nitride layer, imaging 5 masking film, a selective epitaxial growth n-type three-group nitride structure, selective epitaxial growth exposed masking film at the top of the n-type three-group nitride structure, the three-group nitride active layer and a p-type three-group nitride coverage layer from bottom to top. The three-group nitride active layer is arranged between a part, which is not masked and covered, between the selective epitaxial growth n-type three-group nitride structure and the p-type three-group nitride coverage layer; the transparent conducting layer is deposited to the front face of the initial light-emitting device, the p-type electrode is arranged on the transparent conducting layer, and the n-type electrode is arranged on the n-type three-group nitride layer or the bottom of the substrate. The light-emitting device (10) has the advantages of being controllable in position and size, stable in performance and ultra high in quantum efficiency.

The invention discloses a process for preparing zinc oxide nanometer structure, which is characterized in that the process steps are as follows: (A) coating a layer of light-sensitive emulsion on the underlay which is deposited with a layer of seed and then forming a microhole on the light-sensitive emulsion by photolithograpic technology, (B) placing the underlay which is obtained by step A in the growth solution and proceeding the growth of the nanometer structure. The employment of the process can successfully realize the preparation of various zinc oxide nanometer structures. Compared with the prior art, the technique method has the advantages that the process step is simple and controlled, the position of the prepared zinc oxide nanometer structure is controllable, the vertical occurrence is orderly and the appearance is uniform, which is much beneficial for preparing element.

The invention discloses a trimming device for textile fabrics. The device comprises a base plate, an ultrasonic generator, a cutting head and a steam ironing wheel; a roller is installed at one side of a top part of the base plate; textile fabrics are winded on the roller; a roll pedestal is installed on the other side of the top part of the base plate and a motor is fixed on one end of a top partof the roll pedestal; a fixed roll is fixed to an output end of the motor through a rotating shaft; one end, away from the motor, of the rotating shaft is connected with the other end of the top partof the roll pedestal; waste material cases are fixed at two ends of the middle position in the top part of the base plate; pedestals are fixed at two ends of the top part of the base plate between the waste material cases; a control panel is installed on one end of the pedestal; slideways are installed at the middle position of the top end of the pedestal and slide blocks are fixed in the slideways. The invention has the steam ironing wheel and the pressing wheel installed so that the device can be used for ironing the textile fabrics before trimming to facilitate subsequent cutting operations.

The invention provides a polyarylether containing a quaternary ammonium side group and its preparation method, an anion exchange membrane preparation method, and an anion exchange membrane prepared through the anion exchange membrane preparation method. The polyarylether has a structure represented by formula (1); and in the formula (1), R1 is a C2-C5 alkylidene group with a hydroxy group, R2-R4 are C1-C5 alkyl groups, X is halogen, n is not lower than 2, Ar1 has one or more of structures represented by formula (2)-formula (4) respectively, and R5-R28 are H, halogen or C1-C5 alkyl groups respectively. The anion exchange membrane has the advantages of high ion conductivity, low water absorption and inhibited swelling.