239results about How to "Improve structural properties" patented technology

A lightweight, high-strength support platform for use in furniture construction, which has superior structural integrity and can be used, by way of example, in portable folding tables, in work tables and in modular furniture of the character typically used in modern office complexes. The support platform embodies a novel structural reinforcement core, and exhibits superior strength characteristics. In one form of the invention, the support platform is used in the construction of a lightweight, readily portable folding table which includes two pair of legs that are pivotally connected to the platform for pivotal movement between an extended operational position and a retracted storage and transport position.

The present invention relates to a method and apparatus for channel temporal correlation estimation and MIMO mode selection. An embodiment of the invention under LTE system utilizes SRS symbols for temporal correlation estimation and performs MIMO mode selection based on the said temporal correlation estimation.

A fencing system is provided that is constructed from durable polymer components that are sufficiently rigid and durable while providing an integrated modular assembly that is easy to assembly and well suited to a do-it-yourself marketplace. In particular, the modular fence is an integrated system of interfitting vinyl components and a unique polycarbonate or ABS clip for interconnection thereof. The fence includes vertical posts with horizontal members extending therebetween. The horizontal members include grooves therein to support fence panels in the form of web panels. The horizontal members are connected to the vertical members utilizing a novel and uniquely configured connector element.

The invention relates to a coating method capable of improving a laser induced damage threshold of a high-reflectivity film and belongs to the field of film optics. The coating method mainly aims at two key factors of absorption and defects influencing a laser induced damage threshold of a high-reflectivity laser film, and after electron beam evaporation coating of each film layer is finished, utilizes high-energy ion beams to bombard the film layer. The coating method retains unique and beneficial performances of a laser film coated by electron beam thermal evaporation, improves intrinsic absorption and defect density of a film, greatly improves a laser induced damage threshold of a high-reflectivity film, and has the characteristics of strong pertinence, high coating quality, simpleness and good feasibility.

The invention discloses a group of large-thickness blunt-trailing-edge wind-power airfoil profiles and a design method thereof. The airfoil profiles have high lift coefficients under operation angles of attack. The airfoil profile group includes four airfoil profiles with relative thicknesses of 45%, 50%, 55% and 60% in sequence and with trailing edge thicknesses of 7%, 9%, 12% and 16% in sequence. Variable working condition design is adopted by the airfoil profile group, design Reynolds numbers of the four airfoil profiles are 4.0*106, 3.5*106, 3.0*106 and 2.5*106 in sequence according to the relative thicknesses, and the design objective mainly aims to take stability, changed along with the Reynolds numbers, of the lift coefficients as main constraint according to change features of the lifting coefficients within the range of large angles of attack in vane root areas. Numerical prediction results indicate that when the four large-thickness blunt-trailing-edge airfoil profiles are in the range of large angles of attack, the lift coefficients ascend continuously and stably and are in a high level. By the airfoil profile group, vane structural strength and stiffness can be improved, and a wind turbine can have high-efficient and stable output.

The invention discloses a recycling method of a positive electrode piece of a lithium ion battery, aiming at solving the problem of recycling of a nickel cobalt lithium manganite (nickel cobalt lithium aluminate) positive electrode piece and a lithium cobaltate positive electrode piece generated in a production process of the lithium ion battery. According to the technical scheme disclosed by the invention, the recycling method comprises the following steps: 1, crushing the electrode pieces by classes; 2, immersing with an organic solvent; 3, carrying out stirring treatment; 4, filtering with a sieve net; 5, carrying out centrifugal separation; 6, immersing with an alkaline solution; 7, carrying out the centrifugal separation again; 8, drying and removing iron; 9, carrying out ICP (Inductively Coupled Plasma) analysis; and 10, calcining the materials. The recycling method disclosed by the invention can be used for effectively recycling waste materials of the positive electrode pieces of the waste lithium ion batteries, so that the cost is saved; and by immersing with the alkaline solution and carrying out a plurality of times of separation and washing, impurities, such as metal aluminum, in powder grains can be effectively removed. With the adoption of the recycling method, a positive electrode material and an aluminum foil can be completely separated, and the positive electrode material keeps a relatively good structure and electrochemical properties; and the synthesis of a precursor is not needed and the adding amount of a lithium salt is relatively less.

A backed paneling unit comprised of a backing portion that includes at least one of a depth portion and an elevated portion. An elevated portion and / or a depth portion may be formed using any suitable method including, but not limited to, molding, machining and heat stamping. Optionally, a backing portion may comprise a hydrophobic material. Such features may enable fluid flow (e.g., ventilation or liquid drainage) behind the backing portion.

The invention discloses a doped and coated dual-modified lithium / sodium layered metal oxide positive electrode material and a one-step synthesis method therefor. The ion-doped and interface-coated lithium / sodium layered metal oxide positive electrode material is synthesized by adopting a solvent-thermal treatment process / solid-phase ball milling process, wherein the doped ions are one or more than one kinds of F<->, Mg<2+>, Cu<2+>, Zn<2+>, Al<3+>, Fe<3+>, Cr<3+>, Ti<4+>, Zr<4+>, Mo<4+>, Sb<5+> and V<5+>; and the interface coating material is an ion compound which comprises lanthanide series or actinium series ions with radiuses greater than or equal to 1.016<angstrom>. By abandoning the idea that an ion-doped positive electrode material sample is prepared firstly and then interface coating is performed in the conventional process, the new method for the doped and coated dual-modified lithium / sodium layered metal oxide positive electrode material is developed through one-step synthesis, and the new method has the characteristic of simple process; and in addition, the electrochemical performance of the dual-modified positive electrode material is greatly improved, so that the positive electrode material can be used for a power battery and an energy storage secondary battery.

A method and apparatus relating to an interconnection system configured for a portable electronic device. The interconnection system includes an interface connector having a power port configured to be positioned at a peripheral portion of the portable electronic device. The interconnection system is directed to a latching contact mechanism that provides both electrical engagement and a latching mechanism between a power connector and the interface connector disposed in the portable electronic device.

The invention discloses an oxygen-release material for ground water in situ aerobic bioremediation, and a preparation method for the same, belonging to the field of oxygen-release material. The oxygen-release material is composed of the following component parts by weight: 11-14 parts of edible calcium peroxide by weight, 10 parts of sodium bentonite by weight, 1-3 parts of monopotassium phosphate by weight, 2-6 parts of ammonium sulfate by weight, 15 parts of river sand by weight and the coagulant (the rest), wherein total weight of the above materials is 70 parts by weight. The preparation method comprises the following steps of: weighing the calcium peroxide, the sodium bentonite, the monopotassium phosphate and the ammonium sulfate, fully mixing and uniformly dispersing the weighed materials; adding the cement and the river sand, adding water after mixing the cement and the river sand uniformly to prepare the mixture into a massive material, and naturally drying by air. The oxygen-release material has high total oxygen-release quantity and smooth oxygen-release speed, effectively prolongs the oxygen-release time, and improves the change cycle of the oxygen-release filler. The pH value and nutrient substances, such as N, P and the like in the water all meet the requirements on growth of aerobic microorganisms.

An angular selective light control sheeting and a method of making the same are disclosed. The light control sheeting includes a layer of an optically clear elastic material which has a series of parallel slits formed by means of surface slitting with a sharp object such as a razor or blade. Each slit is filled with an opaque material which prevents light transmission through the slit walls. The method includes a step of slitting of an elastic, optically transmissive plastic sheet with a blade and forming at least one array of substantially parallel linear slits in a surface of the sheet, a step of stretching the sheet in a direction perpendicular to the linear slits, and a step of introducing an opaque material into the interior of the slits.

This invention relates to methods for making high strength friction stir welded joints. Broadly the invention provides for a method for making a friction stir welded joint including the steps of applying an adhesive to one surface of a first material to be welded; applying a second material to be welded to the adhesive the first material; curing the adhesive; and forming a friction stir weld joint through the cured adhesive by friction stir welding.

The invention provides an antibacterial peptide and application thereof, and belongs to the technical field of biology. The antibacterial peptide is obtained through rational molecular design on the basis of antibacterial peptide Indolicidin separated from bovine neutrophils; and the antibacterial peptide is antibacterial peptide Indo-1 with the amino acid sequence shown as SEQ ID NO. 1 or antibacterial peptide Indo-2 with the amino acid sequence shown as SEQ ID NO. 2. The antibacterial peptide provided by the invention has good structural characteristics; the antibacterial effect on staphylococcus aureus, salmonella and aspergillus flavus can be obviously improved; and meanwhile, the hemolysis rate and the cytotoxicity of chicken red blood cells can be effectively reduced; the antibacterial peptide can be effectively used in animal-related production activities.

Aspects of the present disclosure relate to. In one example, a method of controlling an additive manufacturing machine includes: measuring a first temperature of a part being processed by the additive manufacturing machine; determining that the first measured temperature exceeds a temperature threshold; activating an auxiliary gas flow; cooling the auxiliary gas flow with a cooling system; and directing the cooled auxiliary gas flow towards the part.

Relating to a fruit and vegetable cultivation method, the invention provides an ecological bacterial fertilizer and natural farming ecological planting optimized method. The invention aims to follow the laws of nature and provide a green and environment-friendly biological fertilizer, and uses the ecological organic fertilizer to realize straw returning to field, restore and improve soil and replace chemical fertilizers, pesticides, hormones and other agricultural materials, thereby fully playing a role of microorganism decomposer in the natural ecosystem. The invention includes two parts: the ecological bacterial fertilizer and a supporting ecological agricultural planting method. The ecological bacterial fertilizer comprises an MP composite probiotic preparation and a microbial fermented fertilizer. The natural farming ecological planting method includes: covering the ground with straw or hay, conducting interplanting or intercropping, placing pests' natural enemies, and placing a reflector panel or planting lawn under fruit trees. By establishing and restoring the biodiversity and virtuous cycle of the agricultural ecosystem, the ecological bacterial fertilizer and the ecological agricultural planting method adhere to the principles of environmental friendliness, resource saving, safety and high quality to ensure the sustainable development of agriculture, and are applicable to the field of agricultural planting.

The invention discloses an enamel steel sheet for direct glazing, which comprises the following chemical elements in percentage by mass: 0.0005-0.002% of C, 0.24-0.50% of Mn, 0.021-0.035% of S, 0.025-0.055% of O, at most 0.010% of Si, at most 0.015% of P, at most 0.010% of Al, at most 0.003% of N, and the balance of Fe and other inevitable impurities, wherein 0<=Mn-1.7*O+3.4*S<=0.30%, and 2.7*O+4.4*S>=0.14%. The invention also discloses a manufacturing method of the enamel steel sheet for direct glazing, which comprises the following steps: (1) molten iron pretreatment; (2) smelting and refining; (3) casting; and (4) hot rolling. The enamel steel sheet for direct glazing has excellent surface characteristics and favorable inherent quality.

The invention discloses mesoporous sound-absorbin material particles and a preparation method thereof. The preparation method comprises the following steps: step 1, mixing sound-absorbing material powder, a templating agent and a binding agent with water to form a sol slurry, wherein the templating agent is an organic monomer or a linear polymer, and the purity of the templating agent is greater than 95%; step 2, dropping the sol slurry into forming oil, wherein droplets of the sol slurry are aged in the forming oil to form gel particles; step 3, taking out the gel particles from the forming oil, and drying the gel particles to form the mesoporous sound-absorbing material particles; step 4, roasting the mesoporous sound-absorbin material particles.

A support structure is provided for supporting a plurality of cylindrical objects. The support structure includes an elongated member having first and second sides and first and second edges. First and second rib sections extend from the first side of the elongated member. The rib sections are generally parallel to each other and are spaced from corresponding edges of the elongated member. Each rib section includes an alternating series of arches and depressions.

The invention relates to a retarded Portland cement and a preparation method thereof. The retarded Portland cement is prepared from the following components in percentage by weight: 52 to 58 percent of Portland cement clinkers, 22.2 to 25.5 percent of mixed slags, 14.8 to 17.5 percent of silica fume, and 5 percent of gypsum. The preparation method comprises the following steps of premixing a phosphorus slag, a vanadium-titanium bearing slag and a zinc slag according to the proportion to obtain a mixed slag a; mixing and grinding the mixed slag a, the Portland cement clinkers, the silica fume and the gypsum to prepare the retarded Portland cement. According to the retarded Portland cement provided by the invention, the usage amount of the Portland cement clinkers is reduced, so that the ingredient cost of producing the cement is effectively reduced, and the discharge of carbon dioxide is reduced; meanwhile, with the adding of the phosphorus slag and the silica fume, the problem that the long-term strength is reduced since the Portland cement clinkers are reduced is solved. The defects that the setting time is prolonged and the strength is reduced, or the strength is increased and the setting time is shorter due to the utilization of other materials in the prior art are overcome, and the obtained retarded Portland cement is remarkably prolonged in initial setting time and remarkably improved in long-term strength.

A new fencing system is provided in the present disclosure that is constructed from durable polymer components that are sufficiently rigid and durable while providing an integrated modular assembly that is easy to assembly and well suited to a do-it-yourself marketplace. In particular, the present invention provides an integrated system of interfitting vinyl components and a unique polycarbonate or ABS clip for interconnection thereof. The fence includes vertical posts with horizontal members extending therebetween. The horizontal members include grooves therein to support fence panels in the form of web panels. The horizontal members are connected to the vertical members utilizing a novel and uniquely configured connector element.

The invention discloses a hard carbon negative electrode material, a lithium ion battery and a preparation method and application of the hard carbon negative electrode material. The preparation method comprises the following steps: (1) carrying out cross-linking reaction on carbon source precursor powder and an additive to prepare a modified carbon source precursor, wherein the additive comprises a cross-linking agent, a modifier and a dispersing aid; (2) sequentially carrying out heat treatment and cooling on the modified carbon source precursor, and mixing the modified carbon source precursor with a lithium-rich agent to prepare a modified hard carbon precursor; and (3) carrying out vacuum carbonization on the modified hard carbon precursor to obtain the hard carbon negative electrode material. The hard carbon negative electrode material prepared by the method belongs to typical amorphous carbon and is high in pyrolysis yield, and the lithium ion battery prepared by taking the hard carbon negative electrode material as the negative electrode material is high in first reversible capacity, high in first coulombic efficiency, stable in property and good in batch consistency.

The invention belongs to the technical field of agricultural production, and particularly relates to an improvement method for laying a film below a coastal saline-alkali soil plough layer for salt resistance. The method comprises the steps that according to field soil salinization and texture conditions of coastal saline-alkali soil, the groundwater salt content and variation ranges thereof, the film is laid below the saline-alkali soil plough layer by selecting a corresponding scheme according to the depth required by crop root system growth, and plough layer soil on the cured film is improved. Accordingly, by laying the slat-resistant diaphragm below the plough layer, the plough layer soil is subjected to irrigation salt leaching, decomposed organic fertilizer is applied in a combined mode, the phenomenon that salt-containing ground water is transported to the plough layer can be stopped, leaching is conducted to lower the salt content of the plough layer soil, fimic plough layer soil is improved, tillage planting is not affected, the purposes of improving the saline-alkali soil, protecting seedlings and increasing the yield are achieved, the method has the advantages of being simple, high in applicability and easy to popularize, the method is applied and popularized in a large area of the coastal saline-alkali soil, and significant economic, ecological and social benefits are achieved.

This invention describes a guidewire placement device for facilitating the delivery of multiple guidewires to the branches of a tubular system. The invention also includes a method for placing guidewires in the branches of a tubular system using a device in accordance with the present invention, while mitigating guidewire entanglement. The present invention may be utilized during percutaneous treatment of vascular and non-vascular disease, and in particular to complement the use of balloon angioplasty and the deployment of balloon-expanded or self-expanding stents into a bifurcated vessel system.

The invention discloses a graphene film-in-situ-coated lithium iron phosphate positive electrode material and a preparation method therefor. A lithium source, an iron source, a chelated phosphorus source and graphene oxide are used as raw materials to prepare precursor powder by a hydrothermal reaction; and then the obtained precursor powder is sintered under atmosphere protection to obtain the in-situ grown graphene film-coated nanometer graphene film / lithium iron phosphate material with a core-shell structural characteristic. In addition, the invention also provides an application of the nanometer graphene film / lithium iron phosphate composite material prepared by the preparation method in a positive electrode of a lithium ion battery. In the product prepared by the preparation method, graphene is grown on and coats the surface of the lithium iron phosphate in an in-situ manner to form the graphene film / lithium iron phosphate positive electrode material, with an in-situ synthesis reaction, a nanometer effect and the core / shell structure characteristic, for the lithium ion battery; by virtue of the positive electrode material, the energy density, the high-rate charge-discharge characteristics and the cycling performance of the lithium ion battery are improved; and meanwhile, the adopted raw materials are low in cost and the process route is simple, so that the lithium iron phosphate positive electrode material is suitable for large-scale industrial production and application.

The invention discloses flower planting nutritional soil and a preparation method thereof, and relates to the technical field of nutritional soil. The flower planting nutritional soil is prepared from the following raw materials in parts: 55 to 65 parts of garden soil, 45 to 50 parts of capsule release particles, 30 to 32 parts of crop straws, 24 to 26 parts of animal excrements, 10 to 12 parts of a bactericide, 5 to 8 parts of a rooting agent and 5 to 8 parts of live worms. The flower planting nutritional soil can provide nutritional components for growth of flowers and is long in fertilizer efficiency time, and the fertilizer application cost can be lowered.

The invention relates to novel material comprising X / hard carbon composite and to a process for their preparation, the process comprising the steps: a) forming a mixture comprising i) one or more hard carbon-starting materials, ii) one or more starting materials which comprise one or more of the component elements of X, and optionally iii) one or more secondary carbon-containing materials; and b) heating the resulting mixture at 100° C. to 1500° C. to yield the material comprising the X / hard carbon composite; wherein X comprises one or more component elements selected from antimony, tin, phosphorus, sulfur, boron, aluminium, gallium, indium, germanium, lead, arsenic, bismuth, titanium, molybdenum, selenium, tellurium, cobalt and nickel and wherein X is present in an amount of at least 5% by weight of the material comprising the X / hard carbon composite.

The invention belongs to the technical field of electric power intelligent equipment, and particularly relates to a heat dissipation electric meter box. The electric meter box comprises a box body which comprises a left outer side baffle plate, a right outer side baffle plate, a top plate, a bottom plate, a front baffle plate and a rear baffle plate, and the inner sides of the two outer baffle plates are fixedly connected with the inner baffle plates through one or more connecting ribs vertically arranged. A cavity formed by outer side baffle plates of the connecting ribs and inner side baffleplate are divided into a plurality of air flow channels, of which the upper ends communicate with the inner space of the box body, and the lower ends are provided with a gas collecting shell. An exhaust fan and an air outlet are fixedly arranged in the air collecting shell, and an air inlet is formed in the bottom plate. According to the electric meter box, an air flowing mode of downward inlet and downward outlet is adopted, so that the functions of wind blocking and rainwater filling prevention are achieved. The whole air flow penetrates through the whole space in the box body from bottom to top, the rising buoyancy of hot air generated by the electric energy meter is fully utilized, and the flowing efficiency of air in the box body is improved.