55 results about "Cell dimension" patented technology

A wafer alkaline cell of a laminar structure is disclosed. The cell has a pair of opposing sides comprising at least the majority of the boundary surface of said cell and defining a short cell dimension therebetween. The cell comprises an anode assembly and a cathode assembly bonded together to form a laminate structure. The cell comprises a single plastic frame or two separate plastic frames housing the anode and cathode material. The anode current collector may be precoated with a sealing metal forming an alkaline resistant metal oxide film to improve bonding to the frame. The anode assembly has an anode material therein typically comprising zinc and the cathode assembly has a cathode material therein typically comprising manganese dioxide. The cell is durable and preferably rigid, has elongated leak block paths, and resists electrolyte leakage.

The invention relates to an uncertainty analysis method for predicting the performance of a periodic material. The method first utilizes a theory to derive and design a mesoscopic microstructure cell loading boundary condition, and proves that the equivalent performance obtained by finite element simulation calculation can represent the equivalent performance of the whole material under the condition. During the process of obtaining an equivalent elasticity modulus of the material by analyzing a typical micro unit cell scale configuration of the material, the invention takes full consideration of the uncertainty of cell dimension and base material performance and analyzes propagation of the uncertainty in the macroscopic and mesoscopic equivalent processes to obtain the actual fluctuation range of the performance of the material and to ensure security of the results.

The invention provides lithiated molybdenum oxides useful as cathode (positive electrode) active materials in rechargeable batteries, especially in lithium ion rechargeable batteries. In one aspect, the invention provides lithiated molybdenum oxides, some of which can be represented by nominal formulas Li_xMoO₂ where x ranges from 0.1 to 2, and Li₄Mo₃O₈. The crystal structure of the lithiated molybdenum oxides of the invention is characterized as being in a hexagonal space group with unit cell dimensions in a determined range. In a preferred embodiment, the lithiated molybdenum oxides of the invention can be formulated with known materials to provide electrodes for electrochemical cells. The invention also provides rechargeable batteries made by combining one or more such electrochemical cells.

The invention discloses a PET foam product and a preparation method thereof. The method comprises the following steps: 1, uniformly mixing raw material components comprising 985-995 parts of physically recovered PET bottle sheets, 1-9 parts of a chain extender, 1-3 parts of an antioxidant and 1-3 parts of a heat stabilizer, wherein the chain extender is obtained through compounding a chain extending monomer containing three function groups with a chain extending monomer containing 4-6 function groups according to a mass ratio of1:3-5:1; 2, carrying out melt extrusion granulation; 3, carrying out solid condensation polymerization on a material in obtained in step 2 at 210-230DEG C under a vacuum degree of 5-100Pa for 1-5h; and 4, foaming PET resin to obtain the PET foam product. The PET foam product has the advantages of uniform cell dimensions, wide application field and low cost of the raw materials; and the preparation method has the advantages of simple process, low energy consumption, small pollution, and industrial production benefiting.

A wafer alkaline cell of a laminar structure is disclosed. The cell has a pair of opposing sides comprising at least the majority of the boundary surface of said cell. The opposing sides define a short cell dimension therebetween. The cell comprises an anode assembly and a cathode assembly bonded together to form a laminate structure. The cell comprises a single frame or two separate frames housing the anode and cathode material. The anode assembly has an anode material therein typically comprising zinc and the cathode assembly has a cathode material therein typically comprising manganese dioxide. The cell is durable and preferably rigid, has elongated leak block paths, and resists electrolyte leakage.

The invention provides an X-ray crystal structure of the 30S ribosome, obtained from Thermus thermophilus 30S subunit, having a tetragonal space group P4₁2₁2 with unit cell dimensions of a=401.4±4.0 Å, b=401.4±4.0 Å, c=175.9±5.0 Å. An advantageous feature of the structure is that it diffracts beyond 3 Å resolution. The invention also provides a crystal of 30S having the three dimensional atomic coordinates of the 30S ribosome, the coordinates being provided in Tables 1A and 1B. The data may be used for the rational design and modelling of inhibitors for the 30S ribosome, which have potential use as antibiotics.

The invention provides an IGBT device and a fabrication method thereof. A composite gate structure is adopted by the IGBT device; the composite gate structure comprises a plane gate and a trench gate; the plane gate is formed on the front surface of a semiconductor substrate; the trench gate is formed in the front surface of the semiconductor substrate; and the trench gate can increase an effective length of a gate of the IGBT device, so that the target of achieving an electron injection enhancement effect can be achieved under the condition of reducing the length of the plane gate and reducing the cell dimension. Furthermore, according to the IGBT device, an auxiliary trench gate is added to a P well region, so that holes can be accumulated at the bottom part and the side walls of the auxiliary trench gate; and the electron injection enhancement effect at the lower part of the P well region is strengthened. Meanwhile, the auxiliary trench gate is electrically connected with an emitter metal electrode, so that the capacitance between an emitter and a collector of the IGBT device can be effectively improved; and the stability of the device is improved.

The invention discloses a thermally-expandable solid epoxy resin microcellular foam material and a preparation method thereof. The foam material is prepared from, by weight, 40-80 parts of solid epoxy resin, 30-50 parts of a curing agent, 3-10 parts of inorganic particles, 0.05-5 parts of a chemical foaming agent, 1-15 parts of a toughening agent and 1-10 parts of reinforced fibers. In the preparation process, a composition is put into a hot press and compacted at the pressure of 10-25 MPa; the composition is put into a foaming mould with a foaming space reserved and subjected to foaming forming for 2-4 h at 90-160 DEG C; then, the temperature is increased to 180-200 DEG C, treatment is carried out for 3 h, and demoulding is carried out after cooling. The foam material has excellent physical and mechanical properties and is easy to process, convenient to store and convey and uniform and regular in cell structure after expansion, and the problems that a solid thermally-expandable material prepared through an existing method is large in cell dimension, difficult to form and process and inconvenient to store are effectively solved.

The invention discloses a micro-regional public security early-warning method based on a mobile communication terminal. The method comprises the steps of S1), carrying out data collection in a mobile communication signal system, and extracting and screening telephone bills with cell information; S2), carrying out convergence on the screened telephone bills according to different statistic time particles, and associating the converged telephone bills with user dimension tables and cell dimension tables, thereby forming a user cell output wide table; S3), outputting a micro-regional stable coefficient of a selected cell according to attribute proportion weights of users based on the user cell output wide table; and S4), carrying out regional public security early-warning if the micro-regional stable coefficient is greater than a preset threshold value. According to the method, the user signal data generated by the mobile communication terminal can be applied to intelligence collection of a regional public security early-warning mechanism. A quantifiable decision reference for public security intensity is provided through the regional stable coefficient and crowd flow distribution, and the police strength employment precision is supported.

The invention provides an X-ray crystal structure of the 30S ribosome, obtained from Thermus thermophilus 30S subunit, having a tetragonal space group P4₁2₁2 with unit cell dimensions of a=401.4±4.0 Å, b=401.4±4.0 Å, c=175.9±5.0 Å. An advantageous feature of the structure is that it diffracts beyond 3 Å resolution. The invention also provides a crystal of 30S having the three dimensional atomic coordinates of the 30S ribosome, the coordinates being provided in Tables 1A and 1B. The data may be used for the rational design and modelling of inhibitors for the 30S ribosome, which have potential use as antibiotics.

The invention discloses a computation method for obtaining a high-fidelity resonating group constant of a nuclear reactor. According to the method, a background section of target resonating nuclides on a target energy group is obtained based on high-efficiency iterative computation of an ESSM method, equivalent lattice cell dimensions are obtained according to the background section obtained after heterogeneous resonance integral table fitting and a lattice cell dimension relation formula, the geometry, materials and temperature of fuel, jackets, etc. are kept unchanged, and equivalent 2-D lattice cells are established; and a neutron moderation equation for a relevant superfine group is solved to obtain the high-fidelity resonating group constant. Compared with a non-deterministic theory method, computation efficiency can be remarkably improved, and economical efficiency is improved; meanwhile, compared with a method based on directly solving a problem-related moderation equation, collision probability computing time can be remarkably shortened, computation efficiency is improved, and meanwhile the defect of huge storage capacity is avoided; compared with a resonance computation method based on a resonance integral table, resonant interference, spatial self-shielding and a temperature distribution effect can be precisely treated by solving the neutron moderation equation of the 2-D lattice cells, and the high-fidelity resonating group constant of fine distribution in each part of fuel is obtained.

The invention provides a hot-pressing formation control method for lithium-ion batteries. The hot-pressing formation control method comprises the following steps: cell dimensions, working section atmospheric pressure values and working section temperature values of multiple sections are stored; formation clamps are arranged in a formation working chamber and operate in a stepping manner downwards along the formation working chamber; pressure devices and heating devices corresponding to operation control parameters are arranged, the pressure devices apply pressure to cells and regulate the working section atmospheric pressure values of the sections, and the heating devices heat the cells and regulate the working section temperature values of the sections; two formation clamps are arranged in the formation working chamber in parallel, and the parameter devices and the formation clamps operate independently. Automatic section-by-section heating control and pressure application can be realized, the two clamps perform control and operation independently and have functions of data connection, communication, protection and inner tank air exhaustion, and each air exhausting heat sink can assist in operation of the corresponding smoke alarm and eliminates heat in equipment through exhausting, so that the cells are taken out conveniently.

The invention relates to a structure adhesive steel-to-steel tensile shear strength sample preparation method. The structure adhesive steel-to-steel tensile shear strength sample preparation method comprises the following steps: performing surface wetting on steel sheets subjected to sand blasting treatment, wherein a steel wire is placed on one steel sheet, a steel wire is not placed on the othersteel sheet, and the surface is subjected to gluing treatment; placing a horizontal plate well; sequentially placing tables, completely covering the tables with transparent plastic sheet membranes, and fitting the two steel sheets subjected to different treatment according to the size of table cells of the tables; enabling the two steel sheets to be vertical and align with the horizontal plate, clamping the two ends of the overlapped steel sheets by a clamping tool, guaranteeing the positions of the two steel sheets not to be changed, maintaining the test sample under the environment of 23 DEG C for 24 hours, detaching the clamping tool and performing conventional maintenance. By the sample preparation method, the limitation of a specific complex tool can cast off, and accurate sample preparation under the condition of no tools can be realized. The tool is simple and easily available; the limitation that the work sample preparation cannot realize mass continuous sample preparation issolved; and by the method, continuous unlimited sample preparation can be realized.

The invention relates to a dihydropyridine calcium antagonist co-crystal and a preparation method and application thereof. The molecular formula of the co-crystal is (C20H25ClN2O5).(C6H5COOH).(Y)n, wherein Y is any one of water molecule, ethanol molecule or isopropanol molecule, n is greater than or equal to 0 and less than or equal to 3, the co-crystal is crystallized in a triclinic crystal system and a P1 chiral space group, the unit cell dimensions are that alpha=97.1-97.5 degrees, beta=92.2-92.6 degrees, and gamma=111.5-112.1 degrees. According to the dihydropyridine calcium antagonist co-crystal and the preparation method and application thereof, the solubility and stability of an existing levamlodipine co-crystal crystal form are improved, and potentially, improvement of tablet stability of antihypertensive drugs and improvement of bioavailability in large-scale tablet production are facilitated.