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In geometry, a dodecahedron (Greek δωδεκάεδρον, from δώδεκα dōdeka "twelve" + ἕδρα hédra "base", "seat" or "face") is any polyhedron with twelve flat faces. The most familiar dodecahedron is the regular dodecahedron, which is a Platonic solid. There are also three regular star dodecahedra, which are constructed as stellations of the convex form. All of these have icosahedral symmetry, order 120.
Carbon-loaded MOF derivative aerogel and preparation method thereof
PendingCN119236812AGood dispersionevenly dispersedMagnetic/electric field screeningCarbon preparation/purificationCellulosePolymer science
The invention provides a preparation method of carbon-loaded MOF (Metal Organic Framework) derivative aerogel. The preparation method comprises the following steps: S1, preparing ZIF-67 with a rhombic dodecahedron structure; s2, preparing cellulose aerogel; s3, preparing a ZIF-67 at cellulose compound by using the ZIF-67 with the rhombic dodecahedron structure and the cellulose aerogel; s4, the ZIF-67 at cellulose compound is carbonized, and the carbon-loaded MOF derivative aerogel is obtained. The problems that in the prior art, a wave-absorbing material is poor in performance, does not have good heat insulation performance, and is high in raw material cost are solved.
Owner:XIAN AERONAUTICAL UNIV
Foamed nickel-based composite material based on electro-deposition / hydrothermal synthesis method and preparation method of foamed nickel-based composite material
The invention discloses a foamed nickel-based composite material based on an electro-deposition / hydrothermal synthesis method, which is characterized in that firstly, foamed nickel NF is used as a substrate, cobalt hydroxide is loaded on the surface of the NF through electro-deposition, and Co (OH) 2 / NF with a lamellar stacked flower-shaped structure is obtained; the preparation method comprises the following steps: preparing NiCo-LDH (layered double hydroxide) Co (OH) 2 / NF, then converting the NiCo-LDH (layered double hydroxide) Co (OH) 2 / NF into ZIF-67 through an impregnation method to obtain ZIF-67 (at) Co (OH) 2 / NF with a regular dodecahedron structure, and finally, preparing NiCo-LDH (at) Co (OH) 2 / NF with a honeycomb stacked structure through a hydrothermal method. The preparation method comprises the following steps: 1, preparing foamed nickel electro-deposition cobalt hydroxide; 2, preparing the foamed nickel loaded ZIF67 and cobalt hydroxide; and 3, preparing the nickel foam loaded nickel-cobalt layered double-metal hydroxide and cobalt hydroxide. When the material is used as a supercapacitor material, the area specific capacitance is 17-18F cm <-2 > when the current density is 1mA cm <-2 >; and when the current density is 10mAcm <-2 >, 70-80% of the initial capacity is still kept after 5000 charge-discharge cycles are carried out.
Owner:GUILIN UNIV OF ELECTRONIC TECH
3D puzzles with replaceable tiles
A logic cube with changeable tiles is presented. The tiles which can be fit on the logic cube, have indicia in well-defined positions and orientations such that the resulting solid is an exact but larger replica of the initial logic cube. The tiles are such that they can be easily fit or removed, and do not fall off with the movement of the logic cube. They also do not obstruct the functionality of the logic cube. Other geometric shapes such as tetrahedron and dodecahedron and sizes other than 3×3×3 may be used.
Owner:BHAVSAR HARSHAD
Double-cone hexagonal prism packaging structure
The utility model relates to the technical field of packaging boxes, in particular to a double-cone hexagonal prism packaging structure which comprises a dodecahedron-shaped box body, a box cover with one side edge and one side edge of the box body covering the opening end of the box body in a turnover mode, and magnetic attraction modules which are arranged on the edge of the opening of the box cover and the edge of the opening of the box body respectively and used in pairs to fasten the box cover and the box body. The paper surface covers the peripheral sides of the box body and the box cover, fastens the magnetic attraction module and extends to be attached to the inner side wall of the box cover and the inner side wall of the box body; the box body comprises a plurality of box bottom grey boards which are assembled into a hexahedral cone, and a plurality of outer wall grey boards which are connected with the box bottom grey boards in a one-to-one correspondence manner and are assembled into a hexahedron; the box cover comprises a plurality of box cover grey boards which are assembled into a hexahedral cone, the box cover grey boards are connected in sequence, and each box cover grey board is connected with one outer wall grey board. The utility model has the advantages that the assembly structure is exquisite, the structural arrangement is reasonable, the production and processing are facilitated, and the like.
Owner:WING FAT (DONGGUAN) PRINTING CO LTD
Sulfur-doped iron Fe-S-N-C cathode oxygen reduction catalyst as well as preparation method and application thereof
ActiveCN119581581Aincrease electron densityImprove adsorption capacityCell electrodesPtru catalystIron salts
The invention provides a sulfur-doped iron Fe-S-N-C cathode oxygen reduction catalyst as well as a preparation method and application thereof, and belongs to the technical field of catalysts and preparation thereof. The preparation method comprises the steps that ZIF-8 of a regular dodecahedron frame structure and a nitrogen-containing ligand are mixed and pyrolyzed, a nitrogen-coated nitrogen-carbon substrate is formed, and the nitrogen-carbon substrate is of a regular dodecahedron frame structure; and performing chemical vapor deposition on the precursor iron salt, the precursor sulfur salt and the nitrogen-coated nitrogen-carbon substrate to obtain the sulfur-doped iron Fe-S-N-C cathode oxygen reduction catalyst. According to the invention, electrons around the Fe active center are reduced, the interaction with oxygenates is improved, the oxygen reduction process of four-electron transfer is promoted during subsequent application, meanwhile, the dissolution of Fe is reduced, and the cycling stability of the catalyst is improved.
Owner:UNIV OF SCI & TECH OF CHINA
Bismuth-loaded nanometer particle dodecahedron Co-C / LDH composite electrode material, and preparation method and application thereof
This invention discloses a dodecahedral Co-C / LDH composite electrode material loaded with bismuth nanoparticles, its preparation method, and its application. The composite material has a dodecahedron formed by a Co-C amorphous carbon layer as the core, an outer NiCoAl-LDH layer, and a surface loaded with Bi nanoparticles, forming a unique three-dimensional core-shell structure. Co-C / NiCoAl-LDH@Bi is assembled as the anode and AC as the cathode. The Co-C / NiCoAl-LDH@Bi / / AC device improves the Cl... ‑ Storage capacity, electrochemical reaction kinetics, and long-term cycling stability expand the application boundaries of LDH materials in the field of high-performance CDI anodes, providing high-performance material support for the practical application of CDI technology in seawater desalination. It is expected to promote the development and implementation of low-cost, large-scale seawater desalination systems and has important industrial application prospects and environmental value.
Owner:JIANGSU UNIV OF SCI & TECH
Percussion instruments
In percussion instruments, this makes it possible to generate a wider variety of sounds during performance. [Solution] The percussion instrument 10 has 12 plate-like members 110[1]~110[10], 120, 130, each with a regular pentagonal shape, which are assembled at positions corresponding to each face of a regular dodecahedron. Of the 12 plate-like members 110[1]~110[10], 120, 130 that make up the percussion instrument 10, at least one plate-like member 130 is provided with an opening that penetrates in the thickness direction.
Owner:EDUCATIONAL FOUND DAIDO GAKUEN
Regular dodecahedron grinding ball of ball mill
The utility model discloses a regular dodecahedron grinding ball of a ball mill, which comprises a grinding ball main body, the grinding ball main body comprises a ball body I, a ball body II is arranged on the surface of the ball body I, and a grinding counterweight mechanism is arranged on the grinding ball main body. The grinding balance weight mechanism comprises a balance weight assembly arranged at the joint of the interior of the first ball and the interior of the second ball. By designing a grinding counterweight mechanism, a clamping ball can be closed in an internal thread groove when a fourth threaded rod rotates into an internal thread hole, and an external thread mounting ring is rotationally mounted at the end part of the internal thread groove to reinforce the clamping ball, so that a second ball, a first ball and a counterweight ball are reinforced after the fourth threaded rod is rotationally fixed; the installation outer surfaces of the first ball body and the second ball body form a regular dodecahedral sphere structure, and when the grinding ball body is located in the ball mill to conduct overturning grinding, the grinding effect on an object needing to be ground is enhanced when large impact is obtained through overturning under the condition that the regular dodecahedral sphere structure and the grinding ball body are subjected to balance weight.
Owner:KUNMING METALLURGY COLLEGE
Mental arithmetic learning tool
Owner:王银
Apple dual concentric spherical microphone array
A multi-radius spherical microphone that includes an inner body defining an inner sphere having an inner radius from a center; a plurality of inner microphones coupled to the inner spherical body and defining an array of inner microphones; an outer body defining an dodecahedron, wherein the inner body and the outer body are concentric about the center; and a plurality of outer microphones coupled to the outer body at respective vertices of the dodecahedron and defining an array of outer microphones, wherein each of the plurality of outer microphones is positioned radially equidistant from the center.
Owner:APPLE INC
Design method of layered porous structure of acetabular cup and acetabular cup
The application relates to a design method of a layered porous structure of an acetabular cup and the acetabular cup, and the method comprises the following steps: modeling a plurality of rhombohedrons, so that the pore diameter is 500-1200 mu m and the porosity is 60%-90%; generating a cubic array from the rhombohedrons, introducing a simulation calculation software, and performing compression finite element simulation on the cubic array to obtain the compression strength and the elastic modulus of the cubic array; selecting a cubic array meeting the human bone performance, arraying the rhombohedron with the largest pore diameter in the cubic array to obtain an outer porous coating area capable of accommodating the acetabular cup; selecting the rhombohedron with the largest porosity to obtain an inner porous coating area capable of accommodating the acetabular cup; and then performing a Boolean operation on the two array bodies and the outer porous coating area and the inner porous coating area of the acetabular cup respectively to obtain an intersection, so that the layered porous structure of the acetabular cup is finally obtained. The acetabular cup obtained by the method can provide stability after implantation.
Owner:ZHEJIANG UNIV HIGH-END EQUIP RES INST
Preparation method and application of ReS2 / CoS2 / NiS2 hollow dodecahedron photocatalyst
InactiveCN119114107AImprove photocatalytic hydrogen production performanceImprove cycle stabilityCatalyst activation/preparationHydrogen productionHeterojunctionDodecahedron
The invention provides a ReS2 / CoS2 / NiS2 hollow dodecahedron photocatalyst, and the photocatalytic hydrogen production activity and stability of the ReS2 / CoS2 / NiS2 hollow dodecahedron photocatalyst are researched. The preparation method of the ReS2 / CoS2 / NiS2 photocatalyst comprises the following steps: firstly, synthesizing CoNi-LDH by taking ZIF-67 as a template, vulcanizing to obtain a hollow CoS2 / NiS2 dodecahedron, and then growing ReS2 on the surface of the CoS2 / NiS2 in situ by a hydrothermal method to obtain the ReS2 / CoS2 / NiS2 hollow dodecahedron photocatalyst. The hydrogen production rate of the ReS2 / CoS2 / NiS2 photocatalyst within 3 hours under the irradiation of visible light can reach 40111.84 [mu] mol / g. The Z-type heterojunction constructed between the ReS2 and the CoS2 / NiS2 not only improves the separation efficiency of photon-generated carriers, but also improves the photocatalytic activity. Tests show that the ReS2 / CoS2 / NiS2 has good hydrogen production performance and stability.
Owner:QINGDAO UNIV OF SCI & TECH
Preparation method of high dielectric constant small line width yttrium iron garnet ferrite material
ActiveCN118145978BInorganic material magnetismInductances/transformers/magnets manufactureOctahedronDielectric loss
A method for preparing high dielectric constant, small linewidth yttrium iron garnet ferrite material belongs to the field of ferrite material preparation technology. This invention utilizes the dodecahedral Y-axis in the garnet structure... 3+ octahedral Fe 3+ Instead of using a traditional method, this invention employs a two-stage pre-calcination process and a three-stage ball milling process (low speed followed by high speed), requiring only three ball milling operations, one granulation operation, and one sintering operation to produce yttrium iron garnet ferrite materials. The two-stage pre-calcination process results in better powder activity, a higher degree of solid-state reaction completion during sintering, and superior material properties. The three-stage ball milling process, using a low-speed followed by a high-speed process, enhances the particle size uniformity of the milled powder. The resulting ferrite exhibits a high dielectric constant ε' > 20, a low ferromagnetic resonance linewidth ΔH ≤ 25Oe, and a low dielectric loss tanδ. ε <1×10 ‑4 .
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA +1
Magnetic 3D-interlocking puzzle
1.1 is an exploded perspective view. 1.2 is another exploded perspective view. 1.3 is an exploded top view. 1.4 is an exploded front view. 1.5 is an exploded left side view. 1.6 is a perspective view of the completed puzzle. 1.7 is another perspective view of it. 1.8 is its top view. 1.9 is its front view. 1.10 is its left side view. 1.11 is a perspective view of a puzzle piece. 1.12 is another perspective view of it. 1.13 is its top view. 1.14 is its bottom view. 1.15 is its left side view. 1.16 is its right side view. 1.17 is its front view. 1.18 is its rear view. As shown in Figures 1.1-1.10, when the puzzle pieces are arranged correctly, they connect with magnets and form a hollow dodecahedron. The distinctive feature of this design lies in the shape of the puzzle game and puzzle pieces, as shown in the figures. Other diagrams of the puzzle shown in Figures 1.3-1.5 and 1.8-1.10 are omitted because they are identical or symmetrical to those in Figures 1.3-1.5 and 1.8-1.10. As shown in Figures 1.11-1.18, the puzzle consists of 12 identical pieces. Therefore, diagrams of individual pieces are omitted. The dashed lines in the diagrams indicate areas of the puzzle game and puzzle pieces that do not constitute part of the design for which registration is sought. 1.1) Exploded perspective view; 1.2) Exploded perspective view; 1.3) Exploded view; 1.4) Exploded view; 1.5) Exploded view; 1.6) Perspective view; 1.7) Perspective view; 1.8) Top view; 1.9) Front view; 1.10) Left side view; 1.11) Perspective view; 1.12) Perspective view; 1.13) Top view; 1.14) Bottom view; 1.15) Left side view; 1.16) Right side view; 1.17) Front view; 1.18) Rear view
Owner:DIMITRIOS KALLIVROUSSIS
A spacecraft bracket and a spacecraft based on a lightweight vibration reduction and isolation lattice structure
The present invention provides a spacecraft support and a spacecraft based on a lightweight vibration reduction and isolation lattice structure, and relates to the field of aerospace technology. The spacecraft support is formed by a plurality of spatially periodically arranged cell structures, and the outline of the cell structure forms a rhombus dodecahedron; the rhombus dodecahedron includes eight first vertices, two second vertices and four third vertices, wherein the first vertex is formed by the intersection of three obtuse angles of rhombuses; the second vertex and the third vertex are both formed by the intersection of four acute angles of rhombuses, and the two second vertices are opposite; the cell structure includes eight first straight rods, eight second straight rods, eight first vibrators, four third vibrators and sixteen springs, each first vibrator is located at a corresponding first vertex, and each third vibrator is located at a corresponding third vertex; one end of each first straight rod intersects with the body center of the rhombus dodecahedron, and the other end is connected to the corresponding first vibrator. The spacecraft support has a good vibration reduction and isolation effect on the basis of lightweight.
Owner:BEIJING INST OF TECH +1
An omnidirectional pressure measurement system and method
ActiveCN120651413BFluid pressure measurement using piezo-electric devicesSignal conditioningDodecahedron
This invention relates to the field of pressure testing technology and discloses an omnidirectional pressure measurement system and method. The omnidirectional pressure measurement system includes a spherical piezoelectric sensor array module, a signal conditioning module, a signal storage and transmission module, and a host computer. The spherical piezoelectric sensor array module collects pressure signals in space, processes them through the signal conditioning module, and transmits them to the host computer via the storage and transmission module. The host computer calculates the pressure field intensity and pressure source location at each point and reconstructs the pressure field using the data. This invention employs a spherical array design with a dodecahedral vertex topology, enabling the system to achieve multi-angle information acquisition and depth perception, eliminating detection blind spots. This invention constructs a weighting function in a spherical coordinate system, calculates the pressure intensity at each point in space using a weighted average, estimates the initial position of the pressure source by squaring the measured value, and combines iterative algorithms for precise positioning. This invention not only improves measurement accuracy and efficiency but also enables the reconstruction of dynamic pressure fields.
Owner:ZHONGBEI UNIV
ZnNiCo-LDH with hollow nanocage structure and preparation method and application thereof
The application discloses a ZnNiCo-LDH with a hollow nanometer cage structure, and a ZIF-67 with a regular dodecahedron structure is synthesized by taking cobalt nitrate and 2-methyl imidazole as raw materials; a ZIF-67@NiCo-LDH with a core-shell structure is prepared by ZIF-67 and Ni(NO3)2.6H2O; and the ZnNiCo-LDH with the hollow nanometer cage structure can be obtained by the reaction of zinc chloride and the ZIF-67@NiCo-LDH. The preparation method comprises the following steps: 1, preparation of the ZIF-67 with the regular dodecahedron structure; 2, preparation of the ZIF-67@NiCo-LDH with the core-shell structure; and 3, preparation of the ZnNiCo-LDH with the hollow nanometer cage structure. As the application of the super capacitor, the specific capacitance is 1900-2000 F / g when charging and discharging in the range of 0-0.5 V and the discharge current density is 1 A / g; and the capacitance retention rate reaches 73% at 10 A / g relative to the capacitance at 1 A / g.
Owner:GUILIN UNIV OF ELECTRONIC TECH
Wooden puzzle toy
The utility model discloses a wooden assembled wisdom toy, including wooden main part, card block and fixed component, the wooden main part is dodecahedron, and every surface of the wooden main part is all seted up recess, card block with recess is matched, and the side of card block is equipped with chamfer, and fixed component is installed in one side of card block, and the card of card block fixed is set in the inside of recess, the utility model discloses through the additional wooden main part, card block and fixed component, can realize the dismounting between card block and wooden main part, and increase the stability that card block assembled placed, and the toy can exercise the dexterity, observation and the cognitive ability to shape of children when playing, and exercise the carefulness and patience of children in the process of playing, can effectively improve the fun of children playing.
Owner:ZHEJIANG SHUANGJIA ARTS & CRAFTS CO LTD
A method for spherical multi-resolution discretization representation
The present invention discloses a spherical multi-resolution discretization representation method, which is applicable to the field of three-dimensional construction of atomic sphere models. A spherical solid figure and an inscribed regular dodecahedron model in the sphere are established. Then, the projection points of the center points of all the faces of the regular dodecahedron on the sphere and the vertices of all the regular pentagons form a spherical point set, and each face projection point and each vertex of the regular pentagon are connected to form a set of plane triangles. After that, the projection points of the center points of the longest sides of each plane triangle on the sphere are connected with the three vertices of the plane triangle to form two plane triangles. After traversing the set, the newly obtained projection points are added to the spherical point set, and this step is repeated. Finally, the set of plane triangles and the spherical point set are the spherical discretization representation method. The triangular mesh formed by this method is more uniform, and the overall discretization division roughness is consistent. It can approximate the original continuous spherical surface with any specified precision, so as to accurately simulate the atomic sphere model.
Owner:CHINA COAL RES INST
Modified cobalt-based ZIF material as well as preparation method and application thereof
The invention relates to the technical field of catalyst materials, in particular to a modified cobalt-based ZIF material and a preparation method and application thereof. The preparation method comprises the following steps: A) uniformly mixing a nitrate solution with a 2-methylimidazole solution, and reacting to obtain a crystal; the nitrate comprises cobalt nitrate and copper nitrate; and B) carrying out suction filtration, washing and drying on the crystal to obtain the modified cobalt-based ZIF material. The modified cobalt-based ZIF material prepared by the method is rhombic regular dodecahedron particles with regular morphology and uniform size, and efficient dechlorination can be realized; meanwhile, the preparation method is simple to operate, low in cost, mild in condition, good in controllability, green, efficient, low in cost, suitable for large-scale preparation and suitable for commercial popularization and application, and large-scale preparation can be achieved.
Owner:UNIV OF SCI & TECH OF CHINA
ZIF-67 derived hollow material and room-temperature boronizing and vulcanizing two-step preparation method thereof
The invention discloses a ZIF-67 derivative hollow material and a room-temperature boronizing and vulcanizing two-step preparation method thereof. The preparation method comprises the following steps: firstly, synthesizing rhombic dodecahedron ZIF-67 by adopting a room temperature precipitation method, and then in-situ growing CoNi-LDH nanosheets on the surface of the rhombic dodecahedron ZIF-67 by introducing Ni < 2 + > to form a core-shell structure precursor; then boronizing treatment and sulfidizing treatment are sequentially carried out at the room temperature, wherein the boronizing treatment realizes partial selective etching of the material, and a core-shell / hollow coexisting structure is formed; and the sulfuration treatment further completes structure transformation and surface refinement, and finally a complete hollow structure with an ultrafine nanosheet surface is obtained. According to the application of the material as a supercapacitor electrode material, the material is charged and discharged within the range of 0-0.5 V, and when the discharge current density is 1 A g <-1 >, the specific capacitance is 1550-1620 F g <-1 >; and compared with 1 A g <-1 >, the specific capacitance retention rate is 70-80% under the current density of 10 A g <-1 >.
Owner:GUILIN UNIV OF ELECTRONIC TECH
Core-shell type tungsten polyacid cluster compound based on 3d-4p dissimilar metal cluster substitution as well as preparation method and application of core-shell type tungsten polyacid cluster compound
ActiveCN119240804AIncrease productionEasy to prepareNickel compoundsTungsten compoundsCrystal systemMetal clusters
The invention discloses a core-shell type tungsten polyacid cluster compound based on substitution of 3d-4p dissimilar metal clusters as well as a preparation method and application of the core-shell type tungsten polyacid cluster compound. The molecular formula of the core-shell type tungsten polyacid cluster compound based on substitution of the 3d-4p dissimilar metal clusters is H29Na9 (H2O) 21 {Ca (H2O) 2 (at) Sb12O18 [Ni2 (OH) (A-alpha-SiW10O37)] 3} 2.40 H2O, the core-shell type tungsten polyacid cluster compound based on 3d-4p dissimilar metal cluster substitution is crystallized in a trigonal system, the space group is P-3, the crystal structure is divided into a {Ni2 (A-SiW10)} shell and a {Ca} at {Sb12} core, and the shell structure is composed of three two-vacancy {A-alpha-SiW10O37} located at three vertexes and three two-core {Ni2O10 (OH)} units located at the vacancy positions of the {A-alpha-SiW10O37}; the {Ca} (at) {Sb12} inner core with Td symmetry is composed of 12 SbO3 triangles and one {CaO6 (H2O) 2} dodecahedron, and the 12 SbO3 triangles are assembled into a spherical hollow {Sb12} cage by sharing oxygen atoms; the {Sb12} cage comprises four hexacyclic and four tricyclic windows, is cup-shaped, and encapsulates an octa-coordinated Ca < 2 + > ion into one of the hexacyclic windows to form a {Ca} at {Sb12} core.
Owner:FUZHOU UNIV
Sound Source Kit (Dodecahedron)
1. The name of this design product: Sound source kit (dodecahedron). 2. Purpose of the product of this design: used for reverberation time measurement, sound insulation measurement, room sound absorption measurement, reflection coefficient or sound absorption coefficient measurement, and outdoor sound propagation and other scenarios. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the key points of the design: Kit 1 stereogram. 5. Other situations that require explanation Other explanations: In this design product, Kit 1 is a speaker and Kit 2 is an amplifier.
Owner:HANGZHOU ELITE DIGITAL TECH CO LTD
Preparation method and application of a super-elastic metal metamaterial
ActiveCN116571759BAdditive manufacturing apparatusPharmaceutical delivery mechanismMetallic materialsDodecahedron
This invention discloses a method for preparing and applying a hyperelastic metallic metamaterial. The preparation method includes: selecting a bending metamaterial based on the Maxwell equation, which is: m = b - 3j + 6, where b and j are the number of rods and nodes, respectively, and the material is a bending metamaterial when m is less than 0; selecting a matrix material and preparing the hyperelastic metallic metamaterial using laser powder bed melting 3D printing. In particular, the bending metamaterial can be selected from body-centered cubic metamaterials, face-centered cubic metamaterials, or orthogonal dodecahedral metamaterials. The elastic strain of the hyperelastic metallic metamaterial in this invention is about 10 times that of existing commercial metallic materials, an improvement of nearly an order of magnitude, and has important application value in the field of engineering materials such as artificial bone energy absorbers in medical devices.
Owner:SHANGHAI JIAOTONG UNIV +1
Toy (Busy Dodecahedron)
1. Name of the product of this design: Toy (Busy Dodecahedron). 2. Purpose of this design product: toy. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.
Owner:SHANTOU VITALITY BEAR TOY IND CO LTD
Evaluation of concave molds and its evaluation method based on laser radar and aerial triangulation data fusion
A concave mold for evaluating the fusion of laser radar and aerial triangulation data and an evaluation method thereof. The concave mold is a regular dodecahedron composed of twelve regular pentagonal planes, having a bottom surface and 11 test surfaces, and is fastened as a whole by adjacent surface mounting plates. A total of five notches, regular pentagons, squares, and circles are cut on the test surface, and corresponding concave bodies are installed respectively. The uncut part on the test surface is a texture test area, including a high-resolution test area, a medium-resolution test area, a low-resolution test area, a grayscale test area, and a chromaticity test area. Each texture test area is square and has a chromaticity test card and a grayscale test card. During the evaluation, evaluation is performed on a single test surface, including point cloud index evaluation and texture index evaluation. The present invention provides a quality test mold, fusion evaluation index, evaluation parameter test and calculation method for point cloud fusion and texture fusion in laser radar data and aerial triangulation data, and provides a detection means for data fusion quality.
Owner:中国地质环境监测院(自然资源部地质灾害技术指导中心)
3D puzzles with replaceable tiles
A logic cube with changeable tiles is presented. The tiles which can be fit on the logic cube, have indicia in well-defined positions and orientations such that the resulting solid is an exact but larger replica of the initial logic cube. The tiles are such that they can be easily fit or removed, and do not fall off with the movement of the logic cube. They also do not obstruct the functionality of the logic cube. Other geometric shapes such as tetrahedron and dodecahedron and sizes other than 3×3×3 may be used.
Owner:BHAVSAR HARSHAD
Omnidirectional pressure measurement system and method
ActiveCN120651413AFluid pressure measurement using piezo-electric devicesSignal conditioningDodecahedron
The invention relates to the technical field of pressure testing, and discloses an omni-directional pressure measuring system and method.The omni-directional pressure measuring system comprises a spherical piezoelectric sensor array module, a signal conditioning module, a signal storage and transmission module and an upper computer; the data are processed by the signal conditioning module and transmitted to the upper computer through the storage and transmission module, the pressure field intensity and the pressure source position of each point are calculated on the upper computer, and the pressure field is reconstructed by using the data. According to the invention, the design of the spherical array with the regular dodecahedron vertex topology is adopted, so that the system realizes multi-angle information acquisition and depth perception, and a detection blind area is eliminated; according to the method, the weighting function is constructed in the spherical coordinate system, the pressure intensity of each point in the space is calculated through weighted average, then the initial position of the pressure source is estimated according to the square of the measured value, and accurate positioning is performed in combination with the iterative algorithm. According to the invention, the measurement precision and efficiency are improved, and the dynamic pressure field can be reconstructed.
Owner:ZHONGBEI UNIV
Grip therapy devices and rehabilitation systems
Hand grip therapy devices and systems for rehabilitation system for increasing the functionality and / or strength in a hand compromised by disease, injury, and the like. In one embodiment the hand grip therapy device includes a dodecahedron portion which is gripped by a hand having less functionality and a prism or paddle portion which is gripped by a hand having greater functionality, the device then being manipulated in a therapeutic manner using both hands.
Owner:PLASTICITY NEUROTHERAPEUTICS LLC
Novel diamond-arranged filler for improving mass transfer of absorption tower
PendingCN122006423ADispersed particle separationChemical/physical/physico-chemical processesCo2 absorptionDodecahedron
The invention relates to the technical field of carbon dioxide absorption fillers, in particular to a diamond-arranged novel filler for improving mass transfer of an absorption tower, the diamond-arranged novel filler comprises a plurality of filler units, each filler unit is arranged to be a hollow prismatic dodecahedron, and each surface of each filler unit is provided with a hexagonal microgroove; the filler units are arranged side by side to form a filler layer, the filler layer is provided with a plurality of layers of diamond-arranged filler bodies, and the plurality of filler layers are arranged in a staggered and stacked manner. By changing the filler structure, a stable three-dimensional structure is formed, and the mass transfer efficiency is improved; when a gas phase and a liquid phase flow through the diamond arrangement filler body, local vortexes are generated at the corner angles of each filler unit, and interface updating can be enhanced.
Owner:HUANENG CLEAN ENERGY RES INST +1