834 results about "Octahedron" patented technology

The invention discloses a preparation method of nano cuprous oxide. In the method, copper chloride and copper nitrate are taken as copper sources, hydrazine hydrate, glucose and an ascorbic acid and the like are taken as reducing agents, and cuprous oxide materials in the shape of an octahedron, a hollow sphere, a cube and a hollow cube and the like are successfully obtained by using a liquid-phase reduction method and a hydrothermal method. Required raw materials for preparation are rich, the cost is low, and no waste is produced. The preparation process is simple, and the repeatability is good. Cuprous oxide nano-materials have wide applications in the aspects of photocatalysis, gas-sensing materials, antibacterial materials, and the like.

A lithium ion-conducting compound, having a garnet-like crystal structure, and having the general formula: Li_n[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.

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.

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 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.

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.

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.

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 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.

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.

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 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.