251results about How to "Retain performance" patented technology

A particular method includes receiving multiple requests to access a signal processing resource of a device that supports multiple subscriptions during a first time period. During the first time period, a first subscription is granted access to the signal processing resource, and a second subscription is denied access to the signal processing resource. A remedial action policy and historical information related to subscription access to the signal processing resource may be used to determine whether to grant access to the signal processing resource to the second subscription during a second time period. When access to the signal processing resource is granted to the second subscription during the second time period, hysteresis may be used to determine whether to grant access to the first subscription during a third time period after the second time period in order to preserve paging performance of the first subscription.

The various embodiments include methods for managing how a MSMS communication device that is accessing an arbitrary combination of multiple telephony networks processes paging collisions. The embodiment methods promote improving a subscription's page blocking rate by causing a MSMS communication device to implement a retransmission remedial action for a blocked subscription. In the various embodiments, the MSMS communication device may implement the retransmission remedial action by increasing a blocked subscription's priority during a subsequent retransmission interval to increase the likelihood that the blocked subscription will receive a repeated page message from its mobile network during this retransmission interval. In some embodiments, the blocked subscription's current priority may be based on the number of retransmission intervals that are presently occurring.

The invention relates to a high-performance magnesium-aluminum-chromium composite spinel brick for RH refining furnace dip pipes and non-ferrous smelting furnaces. The high-performance magnesium-aluminum-chromium composite spinel brick is characterized by comprising the following raw materials: 14.0-20.0 parts of low-chromium fused magnesium chromium sand (6-8% of Cr2O3, at least 78% of MgO), 71.6-82.0 parts of high-purity fused magnesite, 2.0-4.4 parts of nano Cr2O3 powder, 2.0-4.0 parts of uf-Al2O3 micropowder and 2-4 parts of binder. The manufacturing method comprises the following steps: mixing, molding, drying, firing and the like. The magnesium-aluminum-chromium composite spinel brick provided by the invention has the advantages of high sintering tendency, high crystal compactness, low porosity (at most 10%), high compressive strength (at least 100 MPa), high thermal shock stability (at least 18 times by 1100 DEG C water cooling) and the like. The Cr2O3 content of the product isat most 6%, thereby reducing the Cr2O3 content in the brick, lowering the production cost and finally effectively reducing the environmental pollution of waste magnesium-chromium bricks after use.

The invention discloses a preparation method of a graphene/carbon fiber composite. The preparation method comprises the steps: firstly, with graphite powder or natural flake graphite as the raw material, directly and ultrasonically stripping the graphite powder or natural flake graphite in an organic solvent to prepare a graphene dispersing solution; then, adding an organic amine salt with aromatic groups into the obtained graphene dispersing solution to enable the graphene to have positive charges because of adsorbing organic amine ions; next, depositing the graphene with the positive charges on carbon fiber or a carbon fiber product under the action of an external electric field to form the graphene/carbon fiber composite with the organic amine salt; and finally, removing the organic amine salt through thermal treatment to obtain the graphene/carbon fiber composite, wherein the organic amine salt is deposited in an electrophoresis deposition process. The method has the advantages of simplicity in operation, low cost, good uniformity of the graphene/carbon fiber composite, easiness for control and the like.

Methods to physically transfer highly integrated silicon photonic devices from high-quality, crystalline semiconductors on to flexible plastic substrates by a transfer-and-bond fabrication method. With this method, photonic circuits including interferometers and resonators can be transferred onto flexible plastic substrates with preserved optical functionalities and performance.

A method is presented describing in situ preparation of the titania-based sol-gel PDMS coating and its immobilization on the inner surface of a fused silica microextraction capillary. Sol-gel titania-poly (dimethylsiloxane) (TiO₂-PDMS) coating was developed for capillary microextraction (CME) to perform on-line preconcentration and HPLC analysis of trace impurities in aqueous samples. The sol-gel titania-based coatings demonstrated strong pH stability and enhanced extraction capability over other commercially availble GC coatings. Extraction characteristics of a sol-gel titania-PDMS capillary remained practically unchanged after continuous rinsing with a 0.1 M NaOH solution (pH=13) for 12 hours.

A process for preparing the aramid fiber pulp features that the leftover of aramid fibre is physically treated to become microfibrils with large specific surface area. It can be used as friction material, sealing material and filler.

A modified silica gel, in which a surface of a silica gel is partially or entirely coated with a polymer or a copolymer of at least one alkyldisilane compound selected from the group consisting of:

• • compounds represented by General Formula [I]:

wherein each X¹ is the same or different, and is a hydrogen atom, a halogen atom, or a C₁-C₄ alkoxy group; and n is an integer from 1 to 10; and

• • compounds represented by General Formula [II]:

wherein each X² is the same or different, and is a hydrogen atom, a halogen atom, or a C₁-C₄ alkoxy group; each R¹ is the same or different and is a C₁-C₃₀alkyl group; and m is an integer from 1 to 10.

The invention discloses a method for enhancing washing resistance of nano-silver antibacterial cotton fabric by surface modification of cotton fabric. The method comprises the following steps: Step 1, impregnating cotton fabric into a cysteine hydrochloride solution, heating to carry out an esterification reaction between carboxyl group of cysteine hydrochloride and hydroxyl group of cellulose, cleaning, and drying; and Step 2, impregnating the above modified cotton fabric into nano-silver sol, fixing nano-silver by complexation of mercapto group, drying, and cleaning to finally obtain the antibacterial cotton fabric. Particle size of nano-silver particles obtained is 20-60 nm. Sterilizing rates of escherichia coli and staphylococcus aureus both reach 100%. After 20 times of standard washing, sterilizing rate of escherichia coli and staphylococcus aureus is still maintained at 100%. The method of the invention has high safety to human body and is pollution-free to the environment. By the method, excellent performance of the cotton fabric is maintained. The method has practical application potential in antibacterial modification of cotton fabric.

The invention provides a production method of a cement-based grouting material. The method comprises the steps that aggregate and/or a binding material are mixed with a liquid additive, weight ratio of the aggregate and/or the binding material with the liquid additive in the mixture is (90-110) : (0.1-30); the obtained mixture is subjected to a drying process and can be mixed with polymer rubber powder which can re-disperse to obtain the cement-based grouting material. According to the production method, a liquid additive which is not easy to dehydrate and dry, which relates to polycarboxylate superplasticizer particularly, can be dried easily, the performance of the additive can be retained to the greatest extent, the aggregate or the binding material which is subjected to preprocessing of the liquid additive is mixed into other materials according to a specified proportion of the cement-based grouting material, and a cement-based grouting material product with good performance can be produced.

The invention relates to an efficient preparation method for a planar miniature supercapacitor electrode with an interdigital structure, which comprises the steps of (1) obtaining a film based on a two-dimensional nanomaterial on a substrate; (2) directly scraping a part required to be removed on the film according to a pre-designed pattern by using a scraping tool with a pointed end to obtain a planar miniature supercapacitor electrode with an interdigital structure, wherein the size of the pointed end of the scraping tool is not greater than the size of a narrowest part of the part requiredto be removed. The preparation method has the advantages of simplicity, high efficiency, high universality, low cost and environmental friendliness.

The present invention relates to a method for preparing gasket seal. Said preparation method includes according to size requirement cutting metal ring; according to compression ratio of graphite plate and density of gasket cutting out width of graphite tape, according to the specification size required for gasket selecting proper mould; placing the graphite tape into the mould by turns and prepressing graphite ring; moulding the metal ring and graphite ring by means of mould and nesting metal ring with graphite ring together; demoulding; and edging and shaping so as to obtain the gasket seal.

A method for making a core-shell POSS coated MWNT belongs to the technical field of composite material preparation. The MWNT having different POSS coating thicknesses is made through a solution process by the initiation of octamethyl acrylate based POSS monomers under a free radical initiator (benzoyl peroxide/ferrous sulfate/potassium persulphate), wherein the coating thicknesses are 5-10nm, 15-25nm and 30-50nm respectively. The method does not need any pretreatment processes comprising acidification or oxidation of carbon nanotubes, has no destroy to the structure of the carbon nanotubes, has small influences of the influences of the carbon nanotubes, simultaneously selects the industrially commonly used free radical initiator and its initiation system, and is an effective way for preparing the core-shell MWNT; and the method has the advantages of simple technology, low production cost, wide industrial prospect and the like.

The invention belongs to the technical field of preparation of composite membranes, and relates to a preparation method of a polyvinylidene fluoride (PVDF) mesoporous membrane, and the method includes the following steps: dissolving polyvinylidene fluoride powder in an organic solvent, adding a pore forming agent, stirring evenly to prepare a polyvinylidene fluoride membrane casting solution; adding SBA-15 to obtain a mixed solution, heating and stirring the mixed solution to prepare a polyvinylidene fluoride-silica membrane casting solution; sealing, standing for defoaming; using an automatic coating machine to coat a glass substrate with the PVDF-SBA-15 membrane casting solution, and immersing the glass substrate in a solidification liquid to obtain a polyvinylidene fluoride-silica composite membrane. The preparation method is simple in operation, the membrane is prepared at low temperature, the polymer degradation can be reduced, the strength of the membrane is ensured, the prepared PVDF-SBA-15 can effectively improve the hydrophilic ability and water flux of the membrane, and the membrane has good application prospects in the field of water pollutant removal.

The invention discloses a method for manufacturing a composite material component. The method comprises the following steps of S1: coating the side wall of a cavity of a die with a demolding agent; S2: paving a prefabricated body in the cavity: S21: paving continuous fibers on two layers on the outmost surface of the prefabricated body, and arranging a combined paved layer structure of the continuous fibers and chopped fibers between the two layers of the continuous fibers, and S22: positioning the prefabricated body in cavities formed in an upper die board and a lower die board, and performing high-temperature compaction; S3, sealing the upper die board and the lower die board for die assembling, locking the upper and lower die boards by a locking bolt; S41: heating the die to required glue injection temperature; S42: vacuuming through a glue outlet until the vacuum environment is stable; S5: injecting resin into the cavity, closing the glue outlet and a glue injection opening after the glue is completely discharged from the glue outlet, and stopping glue injection; and S6: heating and solidifying the die, and demolding to obtain a required product. The method has the beneficial effects that the composite material component meeting the requirement on the appearance is manufactured, so that the product is unlikely to deform, and the processing cost can be effectively lowered.

The invention relates to a speech recognition system and method based on a transfer neural network acoustic model. The system includes a signal processing and feature extraction module, a language model, a decoder and a migrating neural network acoustic model, wherein the migrating neural network acoustic model includes a robust neural network and a directional neural network. According to the system, the model parameters of a robust neural network model is fixed, meanwhile through layer-to-layer transverse connection of the neural networks, information of a robust acoustic model is transferred into a target acoustic model, the performance of an original robust acoustic model is retained, and meanwhile target language is specifically optimized. The problem of fast construction of the robust acoustic model of less-resource languages is solved, and through a mode in which the acoustic model of a language with sufficient data is used for model parameter migration, the performance of the acoustic model of a target less-resource language is improved and the convergence speed of training is increased.

The invention discloses a preparation method of silk fibroin nanofibers and a preparation method of a silver-loaded antibacterial dressing based on the silk fibroin nanofibers. The preparation methodof the silk fibroin nanofibers comprises the following steps: 1) putting silkworm cocoons into a sodium carbonate solution, and performing degumming to obtain silk fibroin; 2) dissolving the silk fibroin in a sodium hydroxide/urea aqueous solution to obtain a dissolved solution; 3) putting a dialysis bag into a sodium bicarbonate/EDTA solution, performing boiling treatment, taking out the dialysisbag, putting the dialysis bag into an EDTA solution, and performing boiling treatment; and 4) pouring the solution obtained in the step 2) into the treated dialysis bag, performing dialysis, performing ultrasonic treatment, and performing freeze centrifugation to obtain the silk fibroin nanofiber aqueous solution. The invention also discloses the preparation method of the silver-loaded antibacterial dressing, and the method comprises the following steps: 1) preparing the silk fibroin nanofiber aqueous solution by using the above method; 2) dissolving silver nitrate in the obtained silk fibroin nanofiber aqueous solution, wherein the mass-to-volume ratio of the silver nitrate to the silk fibroin nanofiber aqueous solution is 0.02%-0.08%, and performing irradiation from the cup bottom underultraviolet conditions; and 3) after the ultraviolet irradiation is completed, performing pre-cooling, performing freezing, and finally performing vacuum freeze drying to obtain the silver-loaded antibacterial dressing.

A silencer that comprises a casing, one or more pipes or passages leading a flow of gas to the casing and a device for leading gas from the casing. The silencer further has at least one internal chamber, one or more flow inlets to the chamber and one or more flow outlets from the chamber, and one or more flow distributing devices connected to the flow inlet(s) and/or to the flow outlet(s). The flow distributing device comprises one or more walls or profiles extending on a geometrical surface that defines a boundary between an inner volume of the flow distributing device and the chamber. The silencer further has one or more apertures for a flow of gas through the apertures and for leading gas either out of the inner volume into the chamber, or into the inner volume from the chamber. The apertures have a smallest cross-sectional transverse dimension s and a length L, the dimension s being at the maximum 0.2 times the smallest cross-sectional dimension D of the inlet or outlet. The length L is at least the same as the dimension s.

The invention discloses an aluminum plastic composite plate having a honeycomb structure. The aluminum plastic composite plate which is formed by a core (1) and aluminum panels (2) clamping two sides of the core (1) is characterized in that the core (1) adopts a single-layer honeycomb structure and is composed of a one-piece honeycomb frame (3) and fixing cylinders (4); orthohexagonal honeycomb holes are uniformly distributed on the honeycomb frame (3) in an equal interval arrangement manner; the fixing cylinders (4) are embedded into all the honeycomb holes; thick plastic walls (5) are formed on the honeycomb frame (3); and the fixing cylinders (4) and the aluminum panels (2) form one body through compounding with the thick walls (5). The self core performances of the aluminum plastic composite plate having the structure are improved, the combination structure of the core and aluminum panels of the aluminum plastic composite plate having the structure is improved, and the comprehensive performances of the aluminum plastic composite plate having the structure are better than that of present aluminum honeycomb plates.

The invention provides a heat preservation device with a ceramic inner container, for further improving the heat preservation effect of existing vacuum cups, kettles and drinking cups, and overcoming the defects that stainless steel cups easily precipitate harmful substances and glass inner containers or ceramic inner containers are easily broken. The heat preservation device with the ceramic inner container is better in heat preservation effect, more attractive, unlikely to damage, better in corrosion resistance, easy to clean and good in mouthfeel when being used for accommodating water. The heat preservation device comprises a stainless steel outer container, a stainless steel vacuum inner container and a ceramic coating, wherein the ceramic coating is positioned on the inner wall of the stainless steel vacuum inner container; the ceramic coating is prepared from the following raw materials: 30-40 parts of silica sol, 25-50 parts of silane coupling agent, 2-8 parts of iron ions, 2-8 parts of manganese ions, mixed acid and 50-80 parts of white steel; and the mixed acid comprises acetic acid and acrylic acid. The heat preservation device, which has good attrition, acid, alkali, cold, heat and corrosion resistance, is suitable for popularization and application.

A method implemented by computer in or for a flight management system or FMS, comprises the steps of receiving requests issued by clients; determining a correspondence between the requests and predefined unitary services executable by at least one server associated with the FMS; queuing the unitary services determined in one or more queues; determining a response time associated with each request; and notifying at least one client of the response time to its request. Developments describe the processing of queues, the management of priorities, the existence of fixed-price contracts, caching mechanisms, interruptions of queues, cancellations of requests, voting mechanisms, etc. The unitary services in particular can be avionics services of ATA (Air Transport Association) type. Systems aspects and software aspects are described.