203results about How to "Optimizing components" patented technology

Improved query optimizer using implied predicates. The system facilitates allowing a query optimizing component to introduce into a query, extra predicates that facilitate the following: render the same results as the original query; are used as dictated by rules passed to the optimizing component—these rules specify whether the new predicate is an equivalence (that will substitute the old predicate) or an implication (in which the old predicate is preserved); are considered as cost-based alternatives, and discarded if not useful; are tied to index utilization; and can consider both standard and multi-valued indices.

A method for determining thermal capture cross-sections of formations surrounding an earth borehole, including the following steps: providing a logging device that is moveable through the borehole; transmitting, from the logging device, bursts of neutrons into the formations; detecting, at the logging device, resultant gamma ray counts, and deriving a measurement spectrum from the gamma ray counts; deriving a forward model comprising a combination of model exponential components having respective model decay times and model amplitudes; deriving an error function that depends on comparison between the forward model and the measurement spectrum; and determining, by regularized inversion, optimized exponential components of the model that substantially minimize the error function; the optimized exponential components being indicative of the thermal capture cross-sections of the formations.

The invention relates to an efficient straw degrading composite fungicide (JFB-1) and an organic fertilizer preparing method thereof. The composite fungicide comprises composite bacteria and a carrier, wherein the carrier is wheat bran, and the composite bacteria include composite bacteria I, composite bacteria II, composite bacteria III and auxiliary bacteria. The composite bacteria I, II and III account for 1-1.5% of the weight of straws, wherein the composite bacteria I account for 20-25%, the composite bacteria II account for 45-50%, the composite bacteria III account for 30-35%, and the composite bacteria are added uniformly in compost fermentation so as to effectively improve the maturation speed and the quality of an organic fertilizer. The fungicide is fully mixed with straws of rice, asparagus and other crops to carry out compost fermentation, the straws can be degraded rapidly through the synergistic effect of the bacteria, the degradation efficiency is improved, the degradation time is shortened, and insect pests are effectively killed and are rapidly transformed into the organic fertilizer for improving soil. The efficient straw degrading composite fungicide can be used for effectively solving the problem of land occupation caused by landfill, or the problems of fire, traffic dangers, environment pollution and the like caused by burning.

The invention discloses an operation technology used for maintaining direct motion of a large blast furnace through low-heat state strength coke. Local coal is used, the heat state strength of the coke is 29.8%, the O / C is 4.142, oxygen enrichment is maintained to be 15500+ / -100 m<3> / h, the oxygen enrichment rate is 4.5%-5%, the top temperature is 105+ / -5 DEG C, PT ranges from 1490 DEG C-1510 DEGC, Si ranges from 0.5-0.7, and the fuel ratio ranges from 541 kg / t-557 kg / t. The operation technology comprises the following steps that (1) the coke ratio is reduced, the blowing-in area is adjustedfrom 0.34 m<2> to 0.311 m<2>, and the air speed is 265+ / -5 m / s; (2) according to a charging rule, the air volume is reduced to 4000 Nm<3> / min,and the material speed per batch is 44+ / -1; (3) accordingto a heating rule, the molten iron temperature is 1490 DEG C+ / -10 DEG C; (4) according to a slagging rule, the blast-furnace slag basicity ranges from 1.1-1.5; and (5) according to a tapping deslagging rule, the iron notch depth is 3600 mm-3800 mm, the mud ramming quantity is 200 kg-250 kg, and the mud emitting rate is smaller than 1%. According to the new technology, the large blast furnace completely uses the low-heat state strength coke, by increasing oxygen enrichment and decreasing the air quantity, the coal gas component is improved, the bosh coal gas quantity is decreased, the blast furnace pressure difference is reduced, the air feeding rule, the charging rule, the heat rule and the slagging rule are adjusted, the direct motion of the furnace condition is maintained, a foothold iskept at the local coal resource, and the competitive power is improved.

The invention discloses a nylon / polyketone alloy material and a preparation method thereof. The nylon / polyketone alloy material comprises, by weight, 10-50 parts of nylon resin, 40-80 parts of polyketone resin, 10-30 parts of glass fibers, 0.1-0.2 part of initiator, 1-3 parts of maleic anhydride, 2-6 parts of comonomer, 0.2-1 part of antioxidant, 0.2-0.8 part of stabilizer, 0.3-0.6 part of lubricant and 0.1-0.5 part of nucleating agent. The nylon / polyketone alloy material improves the performance of nylon materials and thermal stability of polyketone materials, can substitute for glass fiber reinforced nylon, reinforced PPS and POM and is applied to extremely harsh environments.

The invention discloses a high-magnesium aluminum alloy state rolling preparation process, and relates to the technical field of aluminum alloy machining. The process aims to solve the problems that in an existing high-magnesium aluminum alloy machining hardening mode, the thickness and the width of a plate are limited, a stretcher with larger tensile force is needed during the tensile strength, and too many machining procedures are adopted. The process mainly comprises the steps of material proportioning, smelting, casting, soaking, sawing, surface milling, preheating, hot rolling and the like, reasonable selection of alloy components, and casting and smelting parameters is achieved, two-stage uniform heat treatment is adopted, and different hot rolling process parameters and the like areselected according to different Mg contents, so that a high-magnesium aluminum alloy plate material with excellent performance is obtained. According to the high-magnesium aluminum alloy state rolling preparation process, cold rolling is not needed, limitation to the thickness and the width is small, and stretching machining strengthening is not needed so that the production process can be simplified, the cost can be saved, and the production efficiency can be improved; and the performance of the rolled plate can be directly controlled through hot rolling, the plate can be made into hot rolled tissue, the production process is simpler and more efficient, and then the high-magnesium aluminum alloy plate material with good mechanical property and good corrosion resistance is obtained.

The invention relates to a hydraulic tensioning device, which is used in traction drives of internal combustion engines and which comprises a piston (19) that is supplied with a hydraulic fluid. The piston is movably guided in a linear manner in a cylinder and is spring-loaded against a traction means. The hydraulic fluid can flow into a pressure chamber (17) via a non-return valve or out of the pressure chamber (17) via a pressure-relief valve (20), depending on an adjustment movement direction of the piston (19). For this purpose, the pressure-relief valve (20) is inserted in a central receiving area (16) of the piston (19) on the pressure-chamber side as a valve group (21) which can be mounted upstream and comprises a pot-shaped valve housing (18) and into which a guide element (25) with a corresponding valve seat (29), a valve element designed as a valve plate (30), and a pressure spring (31) are integrated.

The invention relates to a field vehicle-made emulsion explosive suitable for underwater blasting, belonging to a technical field for preparing the emulsion explosive. The emulsion explosive is mainly prepared by applying water-phase materials of ammonium nitrate, sodium nitrate and perchlorate water; oil-phase materials of emulsifier and diesel oil; density modifier of glass or plastic hollow bead; and dry powder of coarse aluminum powder and fine aluminum powder. Compared with traditional emulsion explosive, the field vehicle-made emulsion explosive of the invention has the advantages of high detonation velocity, big power and good water-resistant performance; the emulsion explosive is beneficial to solve the problem that the existing emulsion explosive is unsuitable for underwater blasting; the emulsion explosive has high application value in a large-scale underwater blasting project.

The invention discloses a noise suppression piece which comprises the following components in percentage by weight: 35-60 weight percent of flat soft magnetic alloy powder, 5-20 weight percent of a binder and 30-50 weight percent of a solvent. The invention further discloses a preparation method of the noise suppression piece. The noise suppression piece prepared by the method has the characteristics that the electromagnetic performance can be controlled, the noise suppression piece has multiple functions, the magnetic conductivity and the shielding demand can be met, the electromagnetic wave absorption effect can be improved, and the absorption band is broadened.

The invention relates to an internal circulation gas-lift type cell culture apparatus which is mainly suitable for cell culture of tissues in agriculture and forestry. The invention is characterized in that a cell culture bottle is provided with an air disperser, a culture bottle bleeder hole and a culture bottle air inlet, wherein the air disperser and the culture bottle air inlet are positionedat the middle lower part of the bottle body, and the culture bottle bleeder hole is positioned at the middle upper part of the bottle body; an internal gas circulation mechanism is arranged in the cell culture apparatus and comprises a transmission fixed seat, a wearproof rope, a pair of piston bodies which are installed in opposite directions, a pair of return springs and a pair of return springclamps; the internal gas circulation mechanism is connected with the cell culture bottle; and each piston body is provided with a piston air inlet and a piston air outlet. The invention has reasonable structural design, and gas in the cell reactor is circulated into the culture fluid through a minitype one-way piston pump, so that the cells of the plant tissues in the cell culture bottle are in the gas-lift culture state; and the apparatus is easy to disassemble and assemble, can not be affected by damage and replacement, and has the advantages of low cost and easy popularization.

Devices and methods described herein relate to novel and improved headphone designs that can optimize component movement, efficiency, and / or performance. Headphone designs described herein allow components to freely move in many directions, which can provide users with an increased ability to optimize component positioning and / or performance. Additionally, headphone embodiments described herein can provide a novel manner to foster component adjustability, which also improves headphone efficiency and comfort. This component adjustability allows headphones to provide adjustable shapes and / or sizes, which helps to facilitate the transition to users of different sizes. Embodiments according to the present disclosure can also include headphones with removable components. For example, the headband can be removable from other headphone components. This can allow headphone components to be exchanged for similar components. In addition, removable individual components can provide headphone users with increased mobility and / or flexibility.