54results about How to "Variable structure" patented technology

The invention discloses a universal preparation process for aluminosilicophosphate (SAPO) molecular sieve materials from natural lamellar aluminosilicate minerals. According to the invention, on the basis of the cheap natural lamellar aluminosilicate minerals, the SAPO molecular sieve materials are prepared by carrying out activation, slurrying of ingredients, hydrothermal crystallization and removal of structure directing agents; the natural lamellar aluminosilicate minerals can be fully used as a composite silicon aluminum source, are enabled to completely dissolve by utilizing the reaction activity of an alumina layer with phosphorous species and structure directing agent species under a hydrothermal condition and utilizing dissolving and coordination capacity of a silica layer in a medium, and can assemble anew to form a variety of SAPO molecular sieve materials under the action of the structure directing agents. The process provided in the invention substantially reduces synthesis cost for SAPO molecular sieves; the prepared molecular sieves have variable structure and composition, controllable silicon content and silicon distribution and adjustable acidic site intensity and acidic site distribution; the prepared SAPO molecular sieve materials have a wide application prospect in the fields of catalysis, adsorption, ion exchange, functional materials, etc.

A zoom lens includes a variable aperture-stop mechanism positioned in front or behind an aperture-control lens group; a first rotation imparting member, which rotates an opening/closing ring of the variable aperture-stop mechanism by a relative movement between the variable aperture-stop mechanism and the first rotation imparting member in the optical axis direction so as to hold an adjustable aperture of the variable aperture-stop mechanism at a small aperture size when the aperture-control lens group moves within in the zooming range; and a second rotation imparting member, which rotates the opening/closing ring by a relative movement between the variable aperture-stop mechanism and the second rotation imparting member to open and hold the adjustable aperture at a large aperture size when the aperture-control lens group moves to the accommodated position, at which the aperture-control lens group is partly positioned in the adjustable aperture held at the large aperture size.

The invention provides a system and method for partition electrospinning of multiple materials. The system comprises a multi-spraying-head feeding mechanism and the like, wherein the multi-spraying-head feeding mechanism is located above a receiving component with distance adjustable, the receiving component is fixed above a tray through a support and can be replaced, and a gap is reserved between a conductor and the receiving component; the positive electrode of a high-voltage power supply is connected with the positive electrode of each spray head of the multi-spraying-head feeding mechanism, and the negative electrode of the high-voltage power supply is connected with the conductor; the multi-spraying-head feeding mechanism, the tray and a computer control system are connected, and multi-spraying-head feeding switch of the multi-spraying-head feeding mechanism and rotation or movement of the tray are controlled by the computer control system. The partition electrospinning method and cell electrospinning are combined so that different cells can be distributed on an electrostatic spinning fibrous membrane in a controllable mode, and a three-dimensional structure similar to vascular tissue can be obtained after the electrostatic spinning fibrous membrane is curved.

A solid triggering method for increasing the activity of seeds includes metering the weight of the seeds to be treated, preparing clean sand, regulating the water content of sand to 1-9%, proportionally mixing said seeds with said sand, staying in closed container at 15-25 deg.C for 2-5 days, and drying at ordinary temp for 24-48 hr. Its advantages are high effect, and low cost.

The invention discloses a piezoelectric energy harvester device having a shape memory function and a method thereof. The piezoelectric energy harvester device comprises a first clamp, a rechargeable battery pack, a first piezoelectric energy harvester, a second piezoelectric energy harvester and a second clamp. The first piezoelectric energy harvester and the second piezoelectric energy harvesterare bonded through glue; the first clamp, the first piezoelectric energy harvester, the second piezoelectric energy harvester and the second clamp are connected in sequence, and are connected throughbolts and nuts; and the rechargeable battery pack is connected with the first clamp through a screw. The piezoelectric energy harvester device has a shape memory effect and a piezoelectric effect, isunfolded into a cantilever structure during working state and converts the external vibration energy into electric energy for storage, and is folded into a compact structure during non-working state.The piezoelectric energy harvester device can meet application occasions where an aircraft and the like has requirements for space.

The invention relates to the field of crosslinked polymer preparation and aims at providing a method for preparing crosslinked polystyrene or crosslinked copolymer. The method comprises the steps of taking micromolecule polybromide, styrene monomer, polyamine ligand and solvent for a reaction and deoxidation, and adding copper powder under protection of nitrogen; conducting a reaction to obtain the crosslinked polystyrene with branch point distribution measurable; or treating dobby polyoxyethylene brominated with the end group or other macromolecule polybromide as initiator instead of micromolecule polybromide, so that crosslinked copolymer with branch point distribution measurable is obtained under the same reaction condition. The method is simple in synthesis condition, and polybromide is convenient to synthesize and variable in structure; a divinyl monomer does not needed to be added as a cross-linking agent; a product is high in reactivity, the method is simple and convenient, and the preparation condition is mild; degradable branch points are available, and the crosslinked polystyrene different in function can be prepared by changing the varieties of the macromolecule polybromide. High potential application value is achieved.

The invention discloses a multilayer integrated multi-angle edge nest hole and core hole structure, which comprises various combined structural templates, members and a structural assembly thereof. The multilayer integrated multi-angle edge nest hole and core hole structure with three, four, five and six angle edges and the like is formed. The structure has the improvement and innovation that: the honeycomb cavity and three-layer cemented composite structure of the known technology is improved into the three-layer integrated structure of nest hole and core hole multi-angle edge and multilayer combination, wherein the core layer is not compounded with the upper and lower surface layers in the three-layer integrated structure. Compared with the prior art, the multilayer integrated multi-angle edge nest hole and core hole structure has the characteristics of reasonable structural design, high strength, low cost, wide application range and the like, and is easy to produce, so the structure has good popularization and use value.

A dishwasher having a washing container, a sorption dryer device connected to the washing container in an air-conducting fashion, and at least one flow-conditioning device to homogenize a flow cross-section profile of an airflow as the airflow flows through the sorption dryer device. The flow-conditioning device is provided for the sorption unit between at least one heating element and the sorption unit of the sorption dryer device when viewed in the direction of the airflow such that essentially every point of an intake cross-section area of the sorption unit of the sorption dryer device is permeated by a volumetric airflow with essentially the same intake temperature.

The invention discloses a multifunctional LVS water inspection fixing tool. The multifunctional LVS water inspection fixing tool comprises a frame, an upper air cylinder compressing mechanism (1), a lower fixing seat mechanism (2) and a plurality of pinhead blowing mechanisms (3). The lower fixing seat mechanism (2) is detachably fixed into the frame. An LVS product (9) is arranged on the lower fixing seat mechanism (2). The upper air cylinder compressing mechanism (1) is detachably fixed to the top of the frame, and can get close to or get away from the LVS product (9) in the vertical direction for positioning or loosening. The multiple pinhead blowing mechanisms (3) are arranged around the LVS product (9). One ends of the pinhead blowing mechanisms (3) are detachably connected to the frame and connected with a blowing pipe, and the other ends of the pinhead blowing mechanisms (3) are aligned with and communicate with a pipe opening of the LVS product (9). The multifunctional LVS water inspection fixing tool is simple in structure and convenient to adjust, and can adapt to different LVS for water inspection and fixation. Detection accuracy is guaranteed, and production efficiencyis improved.

The invention provides a skidding device applicable to ice and snow surfaces, belongs to the technical field of ice and snow utensils, and particularly relates to a skidding device applicable to ice and snow surfaces. The problem that an existing ice sliding device is strong in professionalism, high in site requirement, difficult for a beginner to use and easy to hurt the beginner, and thus the use of the existing ice sliding device is limited is solved. The device comprises a skidding shoe body, brake systems and two pathways, wherein the skidding shoe body comprises a front shoe body, a rearshoe body and a connector; a shoe head cap is arranged on the front shoe body; a shoe tail cap is arranged on the rear shoe body; sliding chutes are respectively formed in the bottom surfaces of thefront shoe body and the rear shoe body; the two ends of the two pathways are respectively connected with the sliding chutes formed in the bottom surfaces of the front shoe body and the rear shoe bodyin a sliding manner; nuts are arranged at joints of the pathways and the sliding chutes, and the positions of the pathways are fixed via the nuts. The skidding device is mainly used for skidding on the ice and snow surfaces.

The invention relates to preparation of an organic compound, and aims to provide a preparation method of diaryl acetylene compounds. The preparation method includes steps of adding associated tribromomethylarene compound and copper in a reactor to perform deoxidizing treatment; dissolving polyamine in a proper amount of anhydrous and oxygen-free solvent, and then adding to the reactor; performingcoupling reaction at 30-80DEG C for 3-12 hours; separating and purifying to obtain diaryl acetylene compounds. The preparation is gentle in synthesis condition and the reaction has good compatibilityto different functional groups; the raw material associated tribromomethylarene compound is convenient to compound and has different substituent groups and variable structure; by adopting one raw material, high-quality product can be obtained through simple treatment, and the output is high; by adopting two different raw materials, the asymmetrical diaryl acetylene compound can be prepared.