313 results about "Crystal cell" patented technology

The invention relates to a modified molecular sieve capable of improving coking performance. The modified molecular sieve is prepared from a NaY type molecular sieve by the twice-crosslinking twice-roasting preparation method. According to the weight ratio, in the modified molecular sieve, the content of RE2O3 is 0.05 to 4 percent, the content of P is 0.05 to 5.0 percent; and the crystal cell of the modified molecular sieve is 2.430 to 2.440nm, and the crystallinity is between 35 and 55 percent. The modified molecular sieve has bigger hole volume of medium-and-large-sized holes and good stability; under the same condition of preparation process for catalyst, compared with the comparison molecular sieve, the modified molecular sieve has the advantages of reducing coke yield of the catalyst, simultaneously further improving the heavy oil cracking capability, further improving total liquid yield, and particularly facilitating the improvement of the yield of light oil.

The DRAM structure arranges active region of each storage crystal cell on substrate solely; and designs pattern of deep groove as checkerboard type arrangement a fixed pitch is maintained between each adjacent pattern of deep groove. Active regions of diagonal adjacent each two storage units are connected electrically by using long type bit line contact plug. A contact window is setup at each long type bit line contact plug in order to connect bit line. Thus, same bit line can control diagonal adjacent storage units.

The invention discloses a security lithium ion battery positive plate as well as a preparation method thereof. The positive plate is of a multi-layer structure, and comprises the following active substances: lithium manganese phosphate LiMnPO4, nickel-cobalt-manganese ternary material Li(NixCOyMnz)O2 (0x being more than 0 and smaller than or equal to 0.8, y being more than 0 and smaller than or equal to 0.4, and Z being more than or equal to 0 and less than or equal to 0.4, and x+y+z being equal to 1), as well as a high-temperature-resistant nano material, namely A12O3 or SiO2; the mass percentage of the active substances is that the high-temperature resistant A12O3 or SiO2 ceramic material:LiMnPO4:Li(NixCOyMnz)O2 is equal to (1%-5%):(1%-98%): (1%-98%). The preparation method of the positive plate can be in a sandwiched structure, and also the surface of aluminum foil can be coated with lithium manganese phosphate LiMnPO4 and the Nickel-Cobalt-Manganese ternary material Li(NixCOyMnz)O2 by adopting a mechanical mixing mode, and the surface of aluminum foil can be coated with a layer of high-temperature-resistant nano material; the lithium ion battery prepared by the plate with the structure has favorable safety performance; the long cycle performance and the safety performance of the lithium ion battery can be improved obviously by utilizing the opposite crystal cell volume variation characteristics of different active substances in the charge and discharge processes as well as the excellent liquid retention capability to electrolyte by A12O3 or SiO2.

The invention provides a crystal bar position look-up table generation method and device based on a local extremum relocation PET detector. The crystal bar position look-up table generation method is characterize by, to begin with, carrying out statistics on detected photon events to obtain a two-dimension position spectrum; then, obtaining rapid estimation of center positions of crystal bars with arrangement rules of a crystal cell array in actual space being constraint and through performing peak searching operation on projection data of the position spectrum; and at last, taking effective data fragments out of the position spectrum according to the estimation values of the center positions and performing local peak relocation on the effective data fragments to obtain accurate center positions of the crystal bars, and finishing boundary division based on the accurate center positions, and thus a crystal position look-up table is generated. The invention also discloses a PET detector crystal position rapid identification apparatus which comprises a position statistics and preprocessing module, a crystal center position calculating module and a look-up table writing back module. According to the crystal bar position look-up table generation method and device, the crystal position look-up table can be generated online rapidly and effectively, thereby providing accurate and reliable crystal unit position information for follow-up processing.

A new method of obtaining high pretilt angles of predetermined values in a liquid crystal cell is disclosed. Appropriate amounts of compatible homogeneous and homeotropic alignment materials are mixed with special treatment methods to achieve the desired results.

The combined zeolite comprises two kind sof modified Y-type zeolite, the first kind of 1-9 pts.wt. and the second kind in 9-1 pts.wt. The first kind of modified Y-type zeolite has crystallinity higher than 85%, specific surface area greater than 700 sq m/g, crystal cell parameter 2.420-2.445 nm, SiO2/Al2O3 ratio 8-18 and infrared acidity 0.6-1.6 mmol/g; and the second kind of modified Y-type zeolite has crystallinity higher than 90%, specific surface area greater than 750 sq m/g, crystal cell parameter 2.425-2.435 nm, SiO2/Al2O3 ratio 8-18 and infrared acidity 0.2-0.6 mmol/g. The combined zeolite may be compounded with refractory oxides, such as amorphous Si-Al or Al2O3 to constitute the carrier for hydrocarbon-converting hydrogenation catalyst with group VIB and/or group VIII metal as active component.

A process for preparing X-type zeolite with low Si/Al ration and the crystal cell constant greater than or equal to 2.5 nano includes such steps as adding the mixture of sodium hydroxide and potassium hydroxide and water glass and/or aluminium source to the dregs and/or mother liquid of catalyst factor, mixing to make that the components have such mole ratios as Na2O (4-6), K2O (1-2.5), Al2O3, SiO2 (1-3) and H2O (50-250), ageing at 20-50 deg.C for 1-4 days, and hydrothermal crystallizing at 50-90 deg.C for 10-40 hr.

A method for simultaneously fabricating a phase separated organic film and microstructures with liquid crystal having desired alignment is disclosed. The method includes the step of preparing a mixture of liquid crystal material, prepolymer, and polarization-sensitive material. The mixture is disposed on a substrate and a combination of UV or visible light or heat treatment is applied while simultaneously inducing phase separation so as to form a layer or microstructure of appropriately aligned liquid crystal material adjacent the substrate.

The invention provides a prediction method for the performance of a rare-earth-doped modified titanium-based stannic oxide electrode. The modified performance is predicted by calculating changes of stannic oxide crystal structure parameters before and after rare earth doping on the basis of a density functional theory of the first principles; the crystal geometric structures of SnO2 doped with La with the different concentrations are optimized by taking lanthanum as a doping agent, the lattice constant, the energy band structure, the state density and the formation energy of crystal cells of SnO2 with the different lanthanum doping quantities are calculated, and it shows that doped SnO2 has the higher electric conductivity and the good electro-catalytic property, energy band degeneration is intensified and the acceptor impurity energy level moves towards the direction away from the valence band maximum along with increasing of the doping concentration, the formation energy is lowest when the doping concentration is 1.39%, the electronic structure of SnO2 is most stable at the moment, and experiments verify that when the actual adding amount is 1.5%, the catalytic performance is best. According to the method, the performance of different systems of oxide electrodes doped with other rare earth or elements can be effectively predicted and analyzed according to the difference of doping elements and the different doped electrode systems.

The invention provides a photonic crystal slow light waveguide based on a honeycomb structure. The photonic crystal slow light waveguide based on the honeycomb structure comprises a topology mediocrestructure and a topology non-mediocre structure, and the other part is composed of crystal cells which are arranged and have topology non-mediocre property. A relatively mild energy band appears in afirst Brillouin zone in an energy band structure, and transmission group velocity of light at the frequency is close to 0, so that slow light transmission is realized. An elliptical dielectric cylinder is made from a common dielectric material silicon, and production cost is low.

The invention discloses a making method of carbon-based high-valent silver molecular crystal battery, which comprises the following steps: dissolving silver nitrate into pure water; stirring; placing the active carbon in the silver nitrate solution; adsorbing; filtering; drying the active carbon; placing the potassium peroxodisulfate or sodium peroxodisulfate as oxidizer into distilled water; adding sodium hydroxide; diluting; heating; stirring to react with dried active carbon; insulating; filtering; washing four times through pure water; obtaining the product with Ag4O4 distributed evenly on the surface of active carbon; displaying stronger chemical adsorbing ability and chemical reactivity; reinforcing the purifying capacity of organic toxic and harmful material absorbed by active charcoal.

The present invention relates to one kind of 9-[2-[[[di(trimethyl acetoxyl)methyl] phosphoroso] methoxy]-ethyl] adenine crystal. The crystal has space group P-1, crystal cell parameters a=6.020(2) angstrom, b=11.155(4) angstrom, c=20.833(8) angstrom, alpha=93.798(6) deg, beta=97.458(6) deg, and gamma=102.897(6) deg, and crystal cell volume 1345.5(9) cubic angstrom. The present invention also relates to the process of crystallization in absolute alcohol to obtain 9-[2-[[[di(trimethyl acetoxyl)methyl] phosphoroso] methoxy]-ethyl] adenine crystal. The present invention also relates to the application of the crystal in preparing antiviral medicine.

The invention relates to a device for maintaining the manufacturing facility of silicon-crystal cell battery, particularly to a graphite boat (frame) dry-type cleaning machine. The graphite boat (frame) dry-type cleaning machine comprises a reaction chamber in which a graphite boat or a graphite frame is disposed. The inlet of the reaction chamber is connected to the NF3 (Nitrogen trifluoride) gas source via an air intake pipe, while the outlet of the reaction chamber is connected to a dry-type vacuum pump via an air exhaust pipe; and said air intake pipe is provided with a plasma generator. The invention is able to remove the silicon nitride on the surface of the graphite boat by processing the reaction of the plasma silicon nitride, therefore the invention is featured in good cleaning effect, simple structure and manufacturing, convenient operation and high cleaning efficiency. Compared with the traditional wet-method chute-type cleaning, the cleaning process can be done without dismantling the graphite boat and external drying; in addition, the cleaning process can be done with higher efficiency and is capable of avoiding mechanical damage for the graphite boat.

A liquid crystal display device comprising a liquid crystal cell, two polarizing plates having a polarizer and a protective film satisfying (1) and (2) below, and an optical compensatory film satisfying (3)-(8) below and disposed between the liquid crystal cell and the polarizer:

0 nm≦Re(λ)≦5 nm   (1)

−20 nm≦Rth(λ)≦20 nm   (2)

20 nm<Re(548)<150 nm   (3)

50 nm<Rth(548)<400 nm   (4)

0.5<Re(446)/Re(548)<1   (5)

1.0<Re(628)/Re(548)<2.0   (6)

1.0<Rth(446)/Rth(548)<2.0   (7)

0.5<Rth(628)/Rth(548)<1.0   (8)

The invention provides spinel structure lithium titanate, which is prepared by performing high-temperature calcination and then performing low-temperature heat preservation on a material containing alithium source and a titanium source, wherein the crystal cell parameters of the lithium titanate are between 0.8355 and 0.8365 nanometer, the particle size distribution is between 300 nanometers and30 mum, D50 is between 500 nanometers and 1.5 mum, and crystal cells are developed perfectly with even particle size distribution and have excellent electrochemical properties. Simultaneously, the invention provides a preparation method of the spinel structure lithium titanate, which comprises the steps of performing high-temperature calcination and then performing low-temperature heat preservation on the material containing the lithium source and the titanium source, wherein the material containing the lithium source and the titanium source performs sintering reaction under a high-temperaturecondition, and the temperature of the material is maintained under a low-temperature condition to promote the crystal lattice perfection and the even particle size distribution of the lithium titanate and improve the electrochemical properties of the lithium titanate. The preparation method is simple, has low cost and is easy to implement. The spinel structure lithium titanate has wide application and can be used as an electrode material of batteries and capacitors with wide application, and the properties of application products are improved to a great extent.

The present invention relates to one kind of 9-[2-[[[di(trimethyl acetoxyl)methyl] phosphoroso] methoxy]-ethyl] adenine crystal. The crystal has space group Cc, crystal cell parameters a=13.087(5) angstrom, alpha=90.00(2) deg, b=24.698(8) angstrom, beta=100.68(3) deg, c=8.319(2) angstrom, gamma=90.00(3) deg and 'Z=4, and crystal cell volume 2637.6(15) cubic angstrom. The present invention also relates to the process of crystallization in absolute alcohol to obtain 9-[2-[[[di(trimethyl acetoxl]methyl]phosphoroso]methoxy]-ethyl] adenine crystal. The present invention also relates to the application of the crystal in preparing antiviral medicine.

The invention provides the porous anode pellumina and preparing method. The porous anode pellumina is composed by hexagon crystal cells, the bore diameter range is 5-200nm, the bores are parallel, and the bore diameter is distributed homogeneously. The film has good tenacity. The method comprises the following steps: aluminium sheet degreasing, removing the surface oxidate with alkali, then carrying out chemical milling, using aluminum sheet as anode, platinum filament as cathode, carrying out electrolytic oxidation in acide, then film aluminium base is electrolyzed in the electrolytic solution of dilute hydrochloric acid and anhydrous ferric chloride, soaking the film in the phosphoric acid, and getting the product. The film can be used for separating film of hyperfiltration and microfiltration and form board for making functional material and nanometer line.

The invention discloses a wafer carrier vehicle. The shelf height of an existing fixed shelf trolley with a plurality of layers does not accord with the principle of human engineering and cannot be adjusted, so the back or waist of the operating personnel is easy to be hurt when taking crystal cells from the shelf or placing crystal cells on the shelf, and the damage on health is great due to long-term work. Aimed at solving the problem, the invention provides the wafer carrier vehicle with a movable shelf, which comprises a body and a shelf having two layers. The invention applies a different design of an upper shelf plate to match with a corresponding lifting driving device, thus facilitating the lifting of a lower shelf plate. By applying the carrier vehicle of the invention, the height of the shelf can be adjusted to an extent according with the principle of human engineering, so as to prevent the operating personnel from being hurt.

The present invention relates to technology of utilizing waste in producing high efficiency biopesticide, sewage sludge with solid content of 1.5-5 % is used as the material for fermentation producing Bacillus thuringiensis (B.t). Sludge is filled into fermenting tank, pH regulated to 7.2, sterilized at 121 deg.c for 20 min and inoculated with B.t seed in 1-4 wt%. After aerobic fermentation at 28 deg.c and 200 rpm stirring for 30 hr, the fermented matter with cell number up to 10E9 and spore accounting for over 90 % is discharged. Sludge with rich organic carbon, nitrogen and inorganic salt is excellent medium for B.t to grow, and compared with culturing in soybean powder culture medium, the sewage sludge fermentation process has 10 hr shorter production period, higher biotoxicity of crystal cell mixture and 3 times lower cost.

The invention provides a stable hydrochloric acid Ivabradine II crystal form, a thermogravimetry spectrogram shows that each part of hydrochloric acid Ivabradine molecule contains 0.5 parts of crystal water. The differential scanning calorimetry (DSC) spectrum diagram shows that a large endothermic peak is generated at -154 DEG C, a heat release peak is generated at -160 DEG C, wherein the fusion decomposition temperature is 194 DEG C (summit value), wherein the hydrochloric acid Ivabradine II crystal form is a monoclinic system, its space group is P21, the cell parameter comprises: a=5.48740(10)Angstrom, b=43.4767(7)Angstrom, c=11.4892(2)Angstrom, beta= 98.144 (2) degrees, and a crystal cell volume is 2713.38(8)Angstrom<3>. A characteristic diffraction spectral line of its X-powder diffraction describes hydrochloric acid Ivabradine new crystal form as II crystal form. The Ivabradine new crystal form enables difficult water absorption and deliquescence, and has the advantages of good stability and convenient storage. The preparation method is simple and easy to be carried out, a solvent with high boiling point and large toxicity is not used, the preparation method is in favor of environmental protection, is suitable for industrial production, and has large application value.