43results about How to "Distributed control" patented technology

The invention relates to a method for preparing silicon carbide nanometer particle and a composite material thereof by evaporating solid raw materials and belongs to the technical field and application field of nanometer material. The method for preparing silicon carbide nanometer particle and the composite material thereof by evaporating solid raw materials is characterized in that automatically controlled direct-current arc plasma equipment is utilized to uniformly mix the solid raw materials which are micron silica powder and carbon powder according to a certain ratio and shape the same into blocks by compressing to obtain an anode, a graphite rod is utilized as a cathode, then the raw materials are evaporated at an atmosphere mixed by inert gas and hydrogen gas by a certain ratio to obtain single-phase silicon carbide nanometer particle or multi-phase composite material. The method for preparing silicon carbide nanometer particle and the composite material thereof by evaporating solid raw materials is simple in preparation technology, low in cost, applicable to large-scale preparation, and capable of controlling phase composition and sizes and shapes of prepared particles.

The present invention discloses a non-supported catalyst comprising: an active metal oxide and an additive embedded in the outer surface of the active metal oxide; the active metal oxide is selected from one oxide or more oxides of iron, cobalt, nickel and copper; the additive is selected from one or more elements of iron, cobalt, nickel, copper, rhodium, manganese, potassium, silver, calcium, magnesium, zirconium, aluminum, zinc, ruthenium, platinum, sodium and phosphorus, and is in the form of an element or an oxide; the catalyst achieves the effective coordination of the supported additive and the active metal oxide, the additive can act directly on the surface of active ingredients, the promoting effect of the additive can be significantly enhanced, reducing of the active ingredients can be effectively promoted, reactivity is improved, and the catalytic properties of the catalyst can be improved. The present invention also discloses a preparation method of the non-supported catalyst.

The invention discloses a method and system for active replication for a Cache of a multi-core processor. The method comprises the following steps: S1, a host node analyzes the position and access times of a processor core which accesses to a data block in a shared L2 Cache, and selects a candidate replica node; S2, if the accessed times of the data block reach a replica threshold, the data block is replicated in the replica node and the position of a replica is recorded; S3, if receiving a read request for the replicated data block, the host node forwards the read request to the nearest replica node, and the replica node responds to the data block; S4, after receiving the response, a request node can record the position of the replica node in an address mapping table, and transmits a follow-up read request for the data block to the replica node. The method and the system avoid replica redundancy and unreasonable distribution caused by blind replication, and have the access delay which is close to the low delay of a private L2 Cache, and the capacity which is approximate to the large capacity of the shared L2 Cache.

A forming section comprises a lower wire loop (11) which constitutes a first single- wire section (Tl) following a breast roll (12). The beginning of the first single- wire section comprises a first dewatering zone (Zl) which consists of at least one stationary, first forming shoe (40) and a pulsating strip cover (50) following it. In the first forming shoe, there are a leading edge and a trailing edge as well as a cover provided with through holes and underpressure affecting through the holes of the cover. The holes are constituted of openings or slots substantially in the longitudinal direction of the machine, whereby non-pulsating dewatering is applied on the stock travelling on top of the lower wire. The forming section further comprises a multi-layer headbox (30) by means of which a pulp suspension jet is fed at an impact point after the leading edge of the first forming shoe. The cover of the first forming shoe is straight at least on the section between the impact point of the pulp suspension jet and the trailing edge of the first forming shoe.

The invention relates to a carbon-supported spinel material and a preparation method and application thereof. The preparation method comprises the following steps: (1) mixing a carbon support and a cobalt salt-containing solution, and then adding ammonium hydroxide to obtain a solution A; (2) adding a manganese salt solution into the solution A obtained in the step (1) to obtain a solution B; and(3) heating and ageing the solution B, and then conducting solvothermal reaction to obtain the manganese-containing cobalt-containing carbon-supported spinel material. By means of the method, effective composition of the carbon support and spinel can be achieved, and meanwhile, surface element distribution and chemical property of spinel nanoparticles in the obtained carbon-supported spinel material are effectively adjusted and controlled, so that oxygen reduction half-wave potential of the carbon-supported spinel material, which is prepared through the method, with evenly-distributed surfacemanganese and cobalt is up to 0.872 V.

The invention provides a spread spectrum parameter agile method based on random signals. The method comprises the following steps: a legal sender acquires channel information and sends a locally generated initial random signal to a legal receiver; the legal sender generates a first random signal according to the channel information and the initial random signal; the legal receiver uses the received signal as a second random signal; the received signal comprises the initial random signal and the channel information; the legal sender and the legal receiver respectively quantize the first randomsignal and the second random signal by using the same quantization method to generate a first random sequence and a second random sequence; both the legal communication parties carry out consistency negotiation according to the first random sequence and the second random sequence, and consistent sequences are separately generated locally; and both the legal communication parties separately generate spread spectrum codes locally according to the consistent sequences. According to the spread spectrum parameter agile method based on random signals in the invention, the time-varying spread spectrum codes are generated by using the randomness of receiving signals so as to reach the purpose of spread spectrum parameter agility, thereby improving the secrecy and safety of spread spectrum communication.

The invention belongs to the technical field of organic light-emitting materials, and in particular relates to aryl-substituted tetradentate ligand-coordinated platinum complexes as well as a synthesis method and application thereof. The aryl-substituted tetradentate ligand-coordinated platinum complexes comprise structural fragments shown in a formula I and a formula II. By introducing an aryl group into an organic ligand of a cyclic metal platinum complex, the blue light luminescence peaks of the obtained tetradentate ligand-coordinated platinum complexes are controlled to be within a rangeof 450-465 nm; the aryl-substituted tetradentate ligand-coordinated platinum complexes have the advantages of being pure in chromaticity and low in energy; therefore, an effective eye protection bluephosphorescent material is obtained. The formula I and the formula II are described in the description.

The invention discloses a monocrystalline silicon crucible, which comprises a crucible part, wherein the crucible part is configured into a quartz containing crucible; the crucible part comprises a first crucible unit, a second crucible unit and hole units; the first crucible unit is arranged at the bottom of the crucible part; the second crucible unit is connected with the first crucible unit andforms the side wall of the crucible part; the hole units are arranged at the second crucible unit and are communicated with the inside and outside space of the crucible part; the proportion of the hole units in the circumference direction of the second crucible unit is gradually increased from one side of the bottom of the crucible part to the other side. Carbon-carbon composite materials are used as the crucible side wall, so that the side wall thickness is reduced; the crucible volume is increased; the yield of monocrystalline silicon is improved; through the arrangement of the side wall hole units, the heat transfer of a heater heating body on the quartz crucible and a silicon melt can be improved; through the arrangement of the hole units with different sizes, different shapes or different distribution densities, the temperature gradient distribution inside the silicon melt can be effectively controlled; the convection of the silicon melt is controlled, so that the oxygen contentof the monocrystalline silicon is reduced.

The invention discloses a preparation method and application of a silicon carbide ceramic-based nano-composite material, and belongs to the technical field of nano material preparation and application. The method comprises the steps of: introducing, by an automatic control DC arc plasma device, a mixed atmosphere of an inert gas and hydrogen by using an industrial silicon block as an anode and a graphite rod as a cathode, and then introducing gaseous carbon source methane, acetylene or ethanol, evaporating the raw materials to obtain the silicon carbide ceramic-based nano-composite material; mixing the silicon carbide ceramic-based nano-composite material with a conductive agent and a binder to prepare an electrode to be used as a negative electrode material of a lithium ion battery, assembling the negative electrode material of the lithium ion battery into a cell lithium ion battery, performing an electrochemical performance test such that the cell lithium ion battery can exhibit excellent electrochemical performance. The silicon carbide ceramic-based nano-composite material has a simple preparation process and can realize industrial production. When applied to the negative electrode material of the lithium ion battery, the silicon carbide ceramic-based nano-composite material can realize stabile electrochemical cycle performance and a large-current charge-discharge capability. By processes of current, voltage, atmosphere type and gas pressure ratio thereof, passivation, screening, the method achieves control of the sizes, the distribution, and shapes of nano-powders.

The invention discloses a rolling device and method for preparing a functionally graded material based on Hall effect. The rolling device is based on a conventional rolling mill, a coil is additionally arranged to generate a magnetic field, electrode plates are additionally arranged on a bearing seat to introduce a pulse current, a binding post is additionally arranged to measure the potential difference between two ends of a metal plate to control the condition of current distributed in a gradient mode, the upper electrode plate is connected to a positive electrode of a power supply, the lower electrode plate is connected to a negative electrode of the power supply, and the pulse current is introduced from the upper electrode plate and back to the negative electrode of the power supply after passing through an upper roller, the metal plate and a lower roller, when the pulse current passes through a plastic deformation zone of the metal plate, the pulse current is distributed in a gradient mode in the plastic deformation zone of the metal plate by the influence of the magnetic field in the broadsiding direction, the properties of the metal plate are further distributed in a gradient mode, so that the functionally graded material is prepared, the current distributed in a gradient mode is controllable, and the properties of the material are further controllable.

The invention discloses a processing process of blackberry-flavored breakfast biscuits. The processing process includes the following steps: firstly, all raw materials are weighed in parts by weight;secondly, wheat flour, palm oil and bean dreg powder are evenly mixed, pure water and half of blackberry juice are added, concocting is conducted to form a dough, honey is added, then table salt and carbon baking soda are added, stirring is conducted until the dough is even and fine, fermentation is conducted for 2-3 h, and a fermented dough is obtained; thirdly, forming is conducted by a biscuitcompression forming device; and fourthly, baking is conducted. The bean dreg powder replaces part of the wheat flour, thus digestion of the biscuits can be delayed, aging of starch is delayed, and theshelf life of the biscuits is prolonged; the even blackberry taste is obtained by blending the blackberry juice, and the biscuits have the nutrients from blackberries; through the specially-made biscuit compression forming device, the wanted complete biscuit shape can be obtained, and the density degree and the taste of the biscuits can be controlled; and the breakfast biscuits which are rich innutrition, beneficial to intestinal health and long in shelf life are obtained.

The invention discloses a monocrystal silicon crucible. The monocrystal silicon crucible comprises a crucible part body which is configured to store a quartz crucible, wherein a crucible part comprises a first crucible unit, a second crucible unit and hole units; the first crucible unit is configured to be the bottom of the crucible part and is enclosed by segments of at least two parts; a throughhole is formed in the center of the first crucible unit; the second crucible unit is connected with the first crucible unit to form a side wall of the crucible part; the hole units are arranged on the second crucible unit and are used for communicating inner and outer spaces of the crucible part; the ratio of the hole units on the second crucible unit in the peripheral direction is gradually increased from one side of the bottom of the crucible part to the other side. According to the monocrystal silicon crucible, the crucible part body is set to be a two-section type structure and the through hole is formed in the center of the bottom; when the crucible is heated, stress caused by an inner quartz crucible is concentrated; meanwhile, the bottom is enclosed by a segment structure and the crucible is convenient to detach; the thickness of a side wall of the crucible is reduced so that the capacity of the crucible is enlarged; the crucible has the advantages of effectively controlling the oxygen content of monocrystal silicon, the yield of the monocrystal silicon and the like.

The invention relates to the technical field of lime production, in particular to a double-hearth kiln top feeding device. The double-hearth kiln top feeding device comprises a reversible belt conveyor, a rotary feeding hopper, a liftable sleeve and a liftable charging bell; the reversible belt conveyor is placed in a sealed shell, the rotary feeding hopper comprises a fixed cover and a feeding hopper body, the fixed cover is fixedly connected to the two ends of the sealed shell, the feeding hopper body is located in the fixed cover, below the fixed cover and can rotate around the axis of thefeeding hopper body; the liftable sleeve is placed in the rotary feeding hopper, so that an outlet in the lower part of the rotary feeding hopper is closed; and the liftable charging bell is placed inthe liftable sleeve, so that the distribution of limestone in the kiln is adjusted. According to the double-hearth kiln top feeding device, functions of the reversible belt conveyor, the rotary lifting feeding hopper and a kiln hearth closing flashboard are integrated, investment is reduced, flying dust is reduced, and product quality is improved.

The invention discloses a monocrystal silicon crucible. The single monocrystal crucible comprises a crucible part body which is configured to store a quartz crucible, wherein a crucible part comprisesa first crucible unit, a second crucible unit and hole units; the first crucible unit is configured to be the bottom of the crucible part and is enclosed by segments of at least two parts; the secondcrucible unit is connected with the first crucible unit to form a side wall of the crucible part; the hole units are arranged on the second crucible unit and are used for communicating inner and outer spaces of the crucible part; the ratio of the hole units on the second crucible unit in the peripheral direction is gradually increased from one side of the bottom of the crucible part to the otherside. According to the monocrystal silicon crucible, the bottom is enclosed by a segment structure and the crucible is convenient to detach; the crucible part body is set to be a two-section type structure so that the stress bearing capability of a connection part of the side wall and the bottom is improved, the service life of the crucible is prolonged and the like.