838 results about "Octahedron" patented technology

A lithium ion-conducting compound, having a garnet-like crystal structure, and having the general formula: Lin[A(3-a′-a″)A′(a′)A″(a″)][B(2-b′-b″)B′(b′)B″(b″)][C′(c′)C″(c″)]O12, where A, A′, A″ stand for a dodecahedral position of the crystal structure, where A stands for La, Y, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm and / or Yb, A′ stands for Ca, Sr and / or Ba, A″ stands for Na and / or K, 0<a′<2 and 0<a″<1, where B, B′, B″ stand for an octahedral position of the crystal structure, where B stands for Zr, Hf and / or Sn, B′ stands for Ta, Nb, Sb and / or Bi, B″ stands for at least one element selected from the group including Te, W and Mo, 0<b′<2 and 0<b″<2, where C and C″ stand for a tetrahedral position of the crystal structure, where C stands for Al and Ga, C″ stands for Si and / or Ge, 0<c′<0.5 and 0<c″<0.4, and where n=7+a′+2·a″−b′−2·b″−3·c′−4·c″ and 5.5<n<6.875.

Methods, devices and systems for teaching, learning and understanding sacred geometry concepts through magnetic modular toys comprising a plurality of triangular modular members assembled to form multidimensional hedrons and where in each triangular member includes a magnet such that adjacent members have opposite magnetic polarity facing each triangular member. Platonic solid shapes with interior magnets to hold forms together for construction of larger Platonic solids, geometry learning, and puzzle solving skills. Multidimensional hedrons include simple and small as ell as stellated tetrahedrons, octahedrons, icosahedrons and dodecahedrons.

Metal oxide structures, devices, and fabrication methods are provided. In addition, applications of such structures, devices, and methods are provided. In some embodiments, an oxide material can include a substrate and a single-crystal epitaxial layer of an oxide composition disposed on a surface of the substrate, where the oxide composition is represented by ABO2 such that A is a lithium cation, B is a cation selected from the group consisting of trivalent transition metal cations, trivalent lanthanide cations, trivalent actinide cations, trivalent p-block cations, and combinations thereof, and O is an oxygen anion. The unit cell of crystal structure of the oxide composition can be characterized by first layer of a plane of lithium cations and a second layer of a plurality of edge-sharing octahedra having a B cation positioned in a center of each octahedron and an oxygen anion at each corner of each octahedron. The first layer and the second layer of the unit cell are alternatingly stacked along one axis of the unit cell. Other aspects, features, and embodiments are also claimed and described.

An improved method for synthesizing superabrasive particles provides high quality industrial superabrasive I-,articles with high yield and a narrow size distribution. The synthesis method includes forming a substantially homogeneous mixture of raw material and catalyst material or layers of raw material and metal catalyst. A plurality of crystalline seeds is placed in a predetermined pattern in the mixture or one of the layers to form a growth precursor. The growth precursor is maintained at a temperature and pressure at which the superabrasive crystal is thermodynamically stable for a time sufficient for a desired degree of growth. Advantageously, the patterned placement of crystalline seeds and disclosed processes allow for production of synthetic octahedral diamonds and improved growth conditions generally. As a result, the grown superabrasive particles typically have a high yield of high quality particles and a narrow distribution of particle sizes.

We describe the preparation and characterization of two zinc hybrid luminescent structures based on the flexible and emissive linker molecule, trans-(4-R,4′-R′) stilbene, where R and R′ are mono- or poly-coordinating groups, which retain their luminescence within these solid materials. For example, reaction of trans-4,4′-stilbenedicarboxylic acid and zinc nitrate in the solvent dimethylformamide (DMF) yielded a dense 2-D network featuring zinc in both octahedral and tetrahedral coordination environments connected by trans-stilbene links. Similar reaction in diethylformamide (DEF) at higher temperatures resulted in a porous, 3-D framework structure consisting of two interpenetrating cubic lattices, each featuring basic to zinc carboxylate vertices joined by trans-stilbene, analogous to the isoreticular MOF (IRMOF) series. We demonstrate that the optical properties of both embodiments correlate directly with the local ligand environments observed in the crystal structures. We further demonstrate that these materials produce high luminescent response to proton radiation and high radiation tolerance relative to prior scintillators. These features can be used to create sophisticated scintillating detection sensors.

Apparatus and methods for encoding panoramic content, such as by a wide field of view and large image size. In one implementation, a panoramic image may be mapped to a cube, equirectangular or any other projection e.g., icosahedron or octahedron. Projection may be selected adaptively based on evaluation of the panoramic content. Content evaluation may include obtaining rate distortion cost metric for a given projection configuration including projection type, projection arrangement, and projection orientation. Projection configuration with the lowest cost may be selected as target projection for encoding content. As content composition changes (e.g., object motion, texture presence and / or location) projection may be adaptively selected to match changes in the content. Adaptive content selection methodology may provide for a lower encoded bitrate for a given encoded quality and / or higher quality for a given bitrate.

The present invention relates to a method of tackling sea red tides and fresh water bloom using clay as algae flocculant. The effective component of the flocculant is hydrated magnesio-silicate salt in the laminated structure including upper and lower silicon-oxygen tetrahedron layers and sandwiched magnesium-oxygen octahedron layer. The hydrated magnesio-silicate salt is easy to prepare, low in cost and high in algae flocculating elimination effect.

The invention discloses a tetravalent platinum complex with a bioactive group and a preparation method of the tetravalent platinum complex. The tetravalent platinum complex is a platinum (IV) complex and has the structure shown in the formula II (please see the formula in the description), wherein in the formula II, Y is OH or Cl, and Bio represents the bioactive group. The platinum (IV) complex is prepared according to the equation in the formula III (please see the formula in the description), wherein in the formula III, Y is OH or Cl, Bio-OH represents a compound with bioactivity, TBTU represents a coupling agent O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate, TEA represents a catalyst triethylamine, DMF represents solvent N,N-dimethyl formamide, and DMSO represents solvent dimethylsulfoxide. Cis-platinum is adopted for the bottom face of an octahedron, a small-molecular targeted or medicine active group is introduced to one axial position, a hydroxyl group or helium atom is introduced into another axial position, and the anti-tumor tetravalent platinum complex overcoming cisplatin resistance is provided, so the high-efficiency and low-toxin platinum (IV) complex is obtained.

Provided is a hybridized perovskite quantum dot material. The quantum dot material comprises a kernel and surface ligands. The kernel is formed by R1NH3AB3 or (R2NH3)2AB4, where R1 is methyl group, R2 is an organic molecular group, A is at least one selected from Ge, Sn, Pb, Sb, Bi, Cu and Mn, B is at least one selected from Cl, Br and I, A and B form a coordination octahedral structure, and R1NH3 or R2NH3 is filled in gaps of the coordination octahedral structure. The surface ligand is an organic acid or organic amine. The quantum dot material has a high fluorescence quantum yield.

The invention provides a method for predicting the axial direction cutting force of supersonic vibration auxiliary grinding for fragile materials. The method includes the steps that the kinematics characteristics and the indentation characteristics of a single abrasive grain are analyzed under the supersonic vibration auxiliary action, the effective cutting time of the single abrasive grain, the relation of the average cutting force and the maximum impact force of the single abrasive grain, the material removal size and the number of effective abrasive grains participating in machining within a vibration period are determined, the relation of axial direction cutting force and cutter parameters, workpiece material performance parameters, cutting parameters and vibration parameters is established ultimately, the number of the effective abrasive grains participating in machining and the plastic deformation removal of materials are comprehensively considered, a octahedron material removal size calculation method is put forward, a predicator formula of the axial direction cutting force Fa is established, the formula is more close to the real machining condition, and therefore the precision for predicting the axial direction cutting force of supersonic vibration auxiliary grinding for fragile materials is improved.

Apparatus and methods for characterizing panoramic content, such as by a wide field of view and large image size. In one implementation, a panoramic image may be mapped to a cube or any other projection e.g icosahedron or octahedron. The disclosure exploits content continuity between facets, such as in the case of encoding / decoding cube-projected images. One facet may be encoded / decoded independently from other facets to obtain a seed facet. One or more transformed versions of the seed facet may be obtained; e.g., one corresponding to a 90° counterclockwise rotation, another to a 90° clockwise rotation, and one to an 180° rotation. Transformed versions may be used to form an augmented image. The remaining facets of the cube may be encoded using transformed versions within the augmented image. Continuity between transformed facets in the top row of the augmented image and facets in the middle row of the augmented image may be utilized for motion or intra prediction, and to obtain greater encoding performance compared to encoding facets independently.

The invention provides a method for preparing polyhedral cuprous oxide nanometer granules. The method adopts a chemical solution method to prepare polyhedral cuprous oxide nanometer granules comprising cubes, chamfered cubes, cubic octahedrons, chamfered octahedrons or octahedral series. The method comprises the following concrete steps: copper salt is dissolved in water and stirred at a temperature between 50 and 60 DEG C; polyvinyl pyrrolidone, strong base solution and ascorbic acid solution are orderly added, stirred at a constant temperature between 50 and 60 DEG C and kept for 1 to 3 hours; after the reaction is over, the centrifugation is carried out; and a large amount of the deionized water is used for washing, and the cuprous oxide nanometer granules can be obtained after vacuum drying. By regulating the adding amount of the polyvinyl pyrrolidone, the polyhedral cuprous oxide nanometer granules comprising the cubes, the chamfered cubes, the cubic octahedrons, the chamfered octahedrons or the octahedral series are obtained. The method has the advantages of moderate condition, simple operation, low cost, high yield, controllable shape, and so on.

A golf ball having a dimpled surface that is subdivided into two or more distinct regions wherein different dimple placement schemes are used in different regions. A preferred embodiment has polar regions dimpled according to an octahedral-based dimple pattern and the equatorial region dimpled according to an icosahedron-based dimple pattern. This preferred embodiment has dimples of varying sizes and has 388 total dimples.

The invention relates to octahedral nanometer alloy, porous octahedral nanometer alloy as well as a preparation method and a purpose thereof. The octahedral nanometer alloy is prepared by mixing a metal salt precursor, a surfactant, a reducer and a solvent together and carrying out reaction for a certain time at a proper temperature. A crystal structure of the octahedral nanometer alloy has high symmetry, and a lattice structure of octahedral nanometer particles which form the nanometer alloy is face-centered cubic. The preparation method is simple, is simple and convenient to operate and does not need complex equipment and process; the obtained octahedral nanometer alloy is further dealloyed to obtain the porous octahedral nanometer alloy which also has very high structural symmetry and is large in specific surface area and good in structure stability; as a novel class of high-activity oxygenase mimetic enzyme and peroxidase mimetic enzyme, the octahedral nanometer alloy and the porous octahedral nanometer alloy can be applied to catalysis, immunoassay, biological detection and clinical diagnosis by replacing oxygenase and peroxidase.

An improved method for synthesizing superabrasive particles provides high quality industrial superabrasive particles with high yield and a narrow size distribution. The synthesis method can include forming a growth precursor of a substantially homogeneous mixture of raw material and catalyst material or layers of raw material and metal catalyst. The growth precursor can have a layer of adhesive over at least a portion thereof. A plurality of crystalline seeds can be placed in a predetermined pattern on the layer of adhesive. The growth precursor can be maintained at a temperature and pressure at which the superabrasive crystal is thermodynamically stable for a time sufficient for a desired degree of growth. Advantageously, the patterned placement of crystalline seeds and disclosed processes allow for production of various morphologies of synthetic diamonds, including octahedral and cubic diamonds, and improved growth conditions generally. As a result, the grown superabrasive particles typically have a high yield of high quality particles and a narrow distribution of particle sizes.

The present invention is for a modeling kit in which triangularly shaped panels fit together to form the faces of either tetrahedral or octahedral modules. Centrally located in the triangularly shaped panels are face-to-face interlocking mechanisms which allow different modules to be releasably attached to each other at matching faces. Multiple interlocking modules may then be used to model complex constructs such as lattices, matrices or crystalline structures.

The invention discloses a prussian-blue type sodium ion battery positive electrode material and a preparation method therefor. According to the material, iron ions in iron-nitrogen octahedron in prussian-blue crystal lattices are substituted by transitional metal elements from the interiors to the surfaces of crystal particles based on concentration gradient; the molecular formula of the positive electrode material is Na<x>M<y>Fe<1-y>[Fe(CN)<6>]<z>.nH<2>O, wherein M is a substituting element. The preparation method comprises the following steps of dissolving sodium ferrocyanide, ferrous chloride, and a mixture of substituting element chloride and ferrous chloride into deionized water separately to obtain each precursor solution; then performing a co-precipitation reaction to obtain a prussian-blue turbid liquid, wherein the substituting element is distributed from the interiors to the surfaces of the crystal particles based on concentration gradient; and performing centrifuging, washing and vacuum drying to prepare the positive electrode material. The positive electrode material has the characteristics of high capacity, high cycling stability, simple preparation and the like.

The invention relates to a new installment for having ultrahigh voltage. It includes 6 hammer heads (4) of 6 sides presser synchronization drive, supercharging unit (1) composed of 8 cubes (6) which cutting one corner each and octahedron synthesis blocks (8) used for holding the synthesis raw material in the internal. Thereinto, putting the turbo-charged unit (1) into the hexahedron high pressure octahedron cavity (9) made of cubes (6) which matches with the unit, and putting the octahedron synthesis block (8) into the octahedron high pressure cavity made of cubes which matches with the block, the deformation strutting whose hardness is smaller than the tangential angle cube is filled among the eight cubes (6) which compose the turbo-charged unit. Composed to the second-level six - octahedron static high pressure installment based on two sides skeleton heads in existence, it is simple structure, high intensity of pressure transfer ratio, few energy consumption of the movement, few service work load and so on.

An improved method for synthesizing superabrasive particles provides high quality industrial superabrasive particles with high yield and a narrow size distribution. The synthesis method includes forming a substantially homogeneous mixture of raw material and catalyst material or layers of raw material and metal catalyst. A plurality of crystalline seeds is placed in a predetermined pattern in the mixture or one of the layers to form a growth precursor. The growth precursor is maintained at a temperature and pressure at which the superabrasive crystal is thermodynamically stable for a time sufficient for a desired degree of growth. Advantageously, the patterned placement of crystalline seeds and disclosed processes allow for production of various morphologies of synthetic diamonds, including octahedral and cubic diamonds, and improved growth conditions generally. As a result, the grown superabrasive particles typically have a high yield of high quality particles and a narrow distribution of particle sizes.

The invention provides a preparation method of an electronic grade cobaltosic oxide powder which is shaped like an octahedron.The cobaltosic oxide powder has the complete appearance of the octahedron, the middle diameter (D50) of the powder is 0.5 to 5 Mum (the value can be adjusted by changing process parameters), the apparent density is more than 0.7g / cm<3>, and the tap density is more than 2.0g / cm<3>. The technological process is characterized in that the soluble cobalt salt solution, such as cobalt chloride and cobalt acetate, and ammonium bicarbonate solution are strongly stirred when being added to a reactor in the form of cocurrent flow at a definite speed, and the reaction temperature and PH value are strictly controlled, so the crystallization process is controlled. The obtained cobalt carbonate sediment is dried at a certain temperature after washing and filtration, and finally calcined at a certain temperature to get the ultimate cobaltosic oxide powder in the shape of an octahedron. The preparation method has the advantages that the cobaltosic oxide powder with the complete crystal form and in the form of the octahedron is prepared at atmospheric pressure, the specific surface area is high and the activity is high, etc., and besides the technique is simple, reliable and easy to industrialize.

A dual pizza pie container system is provided, which includes a solid rectangular enclosure and a pizza support platform within the enclosure. The pizza support platform includes four foldable equilateral flaps which, when folded to generally right angles relative to a central base, define an octahedron having four long edges defining a virtual square and four alternating diagonal edges at corners of the support platform when folded. One of the equilateral flaps is provided with an aperture therein which effects registration with the an aperture of the fourth sidewall of the top cover of the enclosure in which widths of the equilateral sidewalls of the platform define about one-half of the height of the sidewalls of the enclosure. Thereby, upper and lower interior solid horizontal compartments, one above and one below the platform, are defined when the support platform is positioned within the enclosure and the enclosure is closed.

Embodiments disclosed herein include methods of modifying synthetic garnets used in RF applications to reduce or eliminate Yttrium or other rare earth metals in the garnets without adversely affecting the magnetic properties of the material. Some embodiments include substituting Bismuth for some of the Yttrium on the dodecahedral sites and introducing one or more high valency ions to the octahedral and tetrahedral sites. Calcium may also be added to the dodecahedral sites for valency compensation induced by the high valency ions, which could effectively displace all or most of the Yttrium (Y) in microwave device garnets. The modified synthetic garnets with substituted Yttrium (Y) can be used in various microwave magnetic devices such as circulators, isolators and resonators.

The invention relates to a partitioning method of equal-area global discrete grids based on a warp and a weft. The partitioning method comprises the following steps of: coinciding six top points connected with a regular octahedron in a sphere with two poles, the equator, a main meridian, a 90-degree meridian, a 180-degree meridian and a 270-degree meridian, obtaining eight spherical triangles by carrying out gnomonic projection on the regular octahedron on a spherical surface, and finishing initial partitioning of the spherical surface; firstly equally dividing each spherical triangle by an arc on which the weft is located, obtaining a spherical sub-triangle and a spherical trapezoid, then equally dividing the obtained spherical sub-triangle and the spherical trapezoid by the arc on which the weft and the warp are located, obtaining one spherical sub-triangle and three spherical trapezoids, and finishing first-layer partitioning; equally dividing each spherical trapezoid by the arc on which the weft and the warp are located; partitioning the spherical sub-triangle into four equal-area parts according to a first-layer partitioning method, and finishing second-layer partitioning, and obtaining sixteen equal-area grid units in all; and carrying out successive recursion partitioning until n-layer partitioning in which a required precision is met.

The invention discloses novel Prussian blue mesocrystals and a preparation method thereof, and belongs to the technical field of the preparation of inorganic materials. The Prussian blue mesocrystals with novel hierarchical self-assembly structures are prepared by mixing ferrocyanide salt serving as a raw material with inorganic acid at a specific concentration through hydro-thermal treatment. The prepared integral mesomorphous particles are in shapes of scobinate octahedrons, similar octahedrons, similar spheroids and great lake rocks and consist of numerous small-scale crystals, and all the small-scale crystals are nanorods and nanocubes of between 150 and 250 nm. The Prussian blue mesocrystals can be applied in the field of catalysis due to larger specific surface areas and a mass of pore spaces; and the invention has the advantages of novel morphology of product particles, low cost, simple equipment, easy operation and the like.

The invention discloses a sodium-rich P2-phase layered oxide material and a preparation method and an application thereof. The material has a chemical general formula of Na<0.72+delta>NiMnM<c>O<2+sigma>, wherein Ni, M, and Mn together with the six nearest oxygen atoms form an octahedral structure and a transition metal layer through edge-shared arrangement; six oxygen atoms in two transition metal layers form a triangular prism-shaped structure; an alkali metal ion of Na+ is located between every two transition metal layers and occupies one position of the triangular prism; M is specifically on or more selected from Mg2+, Zn2+, Mn2+, Co2+, Al3+, Mn3+, Fe3+, Co3+, V3+, Cr3+, Ti4+, Zr4+, Si4+, Sn4+, Ru4+, Nb4+, and Mo4+; and delta, a, b, c, and sigma satisfy relationships of (0.72+delta)+2a+4b+mc=2(2+sigma) and a+b+c=1.

The invention discloses a shape-controlled cuprous oxide micron / nanometer crystal preparing method with electrochemical deposition, which comprises the following steps: pre-processing conductive basal body; formulating electrolyte solution; carrying on constant current electrochemical deposition; gaining Cu2O micron / nanometer crystal. The method is characterized by the following: the cuprous oxide micron / nanometer crystal is gained by changing density of electrolyte solution and electrochemical parameter by constant current electrodeposition method at room temperature, which needn't any supporting electrolytes and surface activators; the form is composed of octahedron, top rake octahedron, top rake cube and cube.

The invention relates to titanium oxide nano powder and a manufacturing method thereof. The method comprises the following steps of (a) adding a titanium precursor and an alkaline chelating agent into water; (b) adding an organic peptizing agent into the mixture resulting from the step (a); (c) allowing the hydrothermal reaction of the mixture obtained from the step (b); and (d) separating the product resulting from the step (c) to obtain the titanium oxide nano powder. The invention also relates to the titanium oxide nano powder, which has the crystal form of a regular octahedron and has a grain size between 30 nm and 500 nm.

The invention provides a preparation method for a nanometer cuprous oxide particle. The method only uses a copper salt, a strong base and a reducing agent as raw materials and prepares the nanometer cuprous oxide particle by successively adding a strong base solution and a reducing agent solution into a copper salt solution; the mol ratio of copper ions to hydroxide ions to the reducing agent is controlled to be 1: (2-10): (0.5-10); the addition rate of the hydroxide ions is 0.04 mol / h to 0.8 mol / h; the addition rate of the reducing agent is 0.05 mol / h to 0.8 mol / h; nanometer cuprous oxide with uniform particle size and regular morphology can be obtained; and cost is reduced, and preparation technology is simplified. Moreover, the morphology and particle size of nanometer cuprous oxide are effectively controlled by controlling the addition rates of the strong base and the reducing agent, reaction temperature and reaction time after addition of the strong base and the reducing agent, and standing time after completion of a reduction reaction; the particle size controlling range of nanometer cuprous oxide is 300 to 1000 nm; and with morphology controlling, nanometer cuprous oxide may be in the shape of a cube, sphere, octahedron, etc.

The invention provides a preparation method of platinum-transition metal alloy nanometer crystals for a fuel cell catalyst. The preparation method of the platinum-transition metal alloy nanometer crystals for the fuel cell catalyst includes following steps; S1, dissolving a platinum precursor, a transition metal precursor and benzoic acid in N-N dimethyl formamide so as to form a precursor mixed solution; S2, placing the precursor mixed solution in a microwave electromagnetic field to obtain the platinum-transition metal alloy nanometer crystals of octahedral shape after performing uniform heating reaction on the precursor mixed solution through microwaves. The preparation method of the platinum-transition metal alloy nanometer crystals for the fuel cell catalyst uses the characteristics of having wave-particle dualism and being capable of performing rapid, uniform and selective heating of the microwaves to continuously heat reactant during the reaction process, effectively decreases reaction time, and shortens a reaction period. Compared with a traditional synthetic process, the synthesis period is shortened by about 10 times, and reaction efficiency is greatly improved.