614results about How to "Economical and practical" patented technology

The invention provides a high hardness ferrite stainless steel wearable flux-cored wire, which takes a low carbon steel H08A cold rolling thin steel strip as an external wrapper; furthermore, the wrapper is internally provided with a powder core which is composed of graphite, metal and alloy powder; the weight percentages of all ingredients of the powder core are 50-75% of high carbon ferrochrome, 10-16% of ferrovanadium, 6-10% of ferrotitanium, 2-10% of tungsten carbide, 2-3% of nickel powder, 1.5-2.5% of silver graphite, 1-3.5% of boron carbide, 1-2% of aluminium magnesium powder, 0-10% of metallic chromium, and the residual quantity of reduced iron powder; the filling proportion of the powder core is 46-50%; the invention adopts the technical proposal that high-content ferrovanadium and adequate alloy powders such as tungsten carbide and boron carbide, etc. are added into the flux-cored wire, changes the microstructure of the existing ferrite stainless steel flux-cored wire surfacing alloy, overcomes the shortages of poor wearability and ductility, and can be applied to submerged arc bead weld manufacture or repair of the parts which has high requirement of abrasion and the corrosion resistance of the wearable grain.

Materials and a method are provided whereby polymers with least 0.5 mole % of the pendant group or end group containing —Si(OR″)₃ (where R″ is H, an alkyl group, Na, K, or NH₄) are used to control aluminosilicate scaling in an industrial process having an alkaline process stream such as a pulping mill process stream. When materials of the present invention are added to the alkaline process stream, they reduce and even completely prevent formation of aluminosilicate scale on equipment surfaces such as evaporator walls and heating surfaces. The present materials are effective at treatment concentrations that make them economically practical.

The invention discloses a rockburst grade predicting method based on an information vector machine to mainly solve the problem that in the current underground engineering construction process, the rockburst geological disaster prediction effect is not good. A rockburst evaluation index and a grading standard are selected, and domestic and overseas great deep rock engineering rockburst instances are widely collected to establish an abundant training sample library. A cross validation strategy is utilized for training an IVM model with the superior statistics mode recognition performance, accordingly, a nonlinear mapping relation between the rockburst evaluation index and the rockburst grade is established, model initial parameter setting and the training sample library are adjusted according to the training result, and the IVM model predicting the rockburst grade is finally established. By means of the method to predict the rockburst grade, the complex mechanical analysis or calculation is not needed, only the input feature vector of a sample to be predicted needs to be input in the prediction model, and then the prediction value of the rockburst grade can be obtained. The method is economical, efficient and high in prediction precision and has good engineering application prospects.

A system of securing access to vehicle control systems using non-persistent identifiers. Identifiers are received and stored at the commencement of vehicle operations. Restricted events are detected and confirmation identifiers are requested, in order to continue vehicle operations. If confirmation identifiers are not presented, vehicle operations enter caution mode, and access to vehicle controls is restricted. Upon termination of a vehicle trip, the non-persistent identifiers are discarded. The system provides a convenient, low-overhead, secure means of regulating access to vehicle control systems.

A single dual mode monolithic focal plane array having an active sensor and a passive sensing capability is switched from one mode to the other by switching the bias across the cells of the array from a passive IR mode to an active LADAR mode, with the monolithic dual mode focal plane array having applications in missile target seekers and laser target designators. The switching is accomplished by increasing the gain of the array by as much as 30 times that associated with IR detection when laser return pulses are expected. Thus, there need be no mechanical changes to the array to afford both passive IR sensing and an active LADAR pulse detector. Nor need there be two different focal plane arrays, one for IR and one for laser radiation, which leads to boresighted alignment problems.

The invention discloses a chiral phosphine ligand or an enantiomer, a racemate or a diastereoisomer thereof and a transition metal catalyst comprising the chiral phosphine ligand, wherein the structure of the chiral phosphine ligand is shown as in formula I in the specification. The invention also discloses an application of the chiral phosphine ligand or the transition metal catalyst and a method for efficiently synthesizing chiral beta-aryl amide by using catalytic hydrogenation. The transition metal catalyst can be used for carrying out asymmetric catalytic hydrogenation reaction, thereby efficiently synthesizing the beta-aryl amide compound with a high optical purity.

The invention discloses a highly-filled unplasticized PVC/CaCO3 composite and its preparing method. Its material composition is in weight share: PVC resin 100 shares, CaCO3 filling agent 1-8 shares, high-molecular modifier 0-40 shares, surface modifier 1-6 shares, heat stabilizer 1-8 shares and lubricant 0.2-5 shares. It can be made by using a double-screw extruder or a double-roller kneader through fusion commixing method. On the condition of improving its shock resistance, it realizes the filling of a large amount of CaCO3 and thus can realize the retainment of its performance and reduce the cost. And it can obtain a series of different-toughness composites by regulating the formula (such as CaCO3 content, sort and use level of CaCO3 surface modifier, proportion of CaCO3 to high-molecular modifier, etc.). In addition, it has simple manufacture process, economic and feasible.

The invention discloses an automobile exhaust degenerating material as well as the application thereof, and relates to an environment-friendly material as well as the application thereof. The invention solves the problems existing in prior automobile exhaust degenerating material that the application scope is small, the cost is high, and the manufacture method is complicate. The automobile exhaust degenerating material of the invention is composed of a nanometer titanium dioxide photocatalyst and a binder by the weight ratio of (1-2):20. The automobile exhaust degenerating material of the invention is used for degrading the automobile exhaust road surface, wherein, the application method of the automobile exhaust degenerating material is of a spraying method or a spreading method. The automobile exhaust degenerating material has the advantages of strong practicality, simple process, easy construction application, wide application scope, less material dosage per unit area and low cost. The efficiency in degrading toxic gases of HC and CO in the automobile exhaust can reach higher than 70 percent, the automobile exhaust degenerating material of the invention can be recycled, and the degradation degree to toxic gases after the automobile exhaust road surface degraded by the invention is flushed by rain can be still maintained above 60 percent.

Disclosed herein is a new improved large planetary gear system used on the input stage of wind turbine power generators. This improved planetary gear system reduces or eliminates lubricant debris traditionally generated from the gear teeth, thereby eliminating an initiating source for bearing failure. To achieve these results, some and preferably all of the gear teeth within the planetary gear system are superfinished using chemically accelerated vibratory finishing to a surface roughness of approximately 0.25 micron or less. Several objects and advantages of the invention are to provide a gearbox with reduced metal debris, improved bearing life, reduced wear, reduced vibro-frictional noise, improved contact fatigue, improved fretting resistance, improved lubrication, to simplify the run-in process, and to enhance the durability and efficiency of the gearbox.

The EZ Laptop Stand® is a stand for a laptop computer that is very inexpensive, extremely lightweight, easy to assemble and disassemble and folds flat for portability. It is made from foamcore for its light weight, inexpensive material cost, and strength and durability when designed in the manner that it is. Manufacturing is done by laser cutting or die cutting, both methods being cost effective and practical for use with foamcore. There are three models of the EZ Laptop Stand®, the main feature of all three consisting of primary support members, which when folded or hinged at an acute angle at their mid point, create two strong triangular sloped surfaces tapered to a narrower dimension towards the bottom, front edge (the side closest to the user), where feet protrude upward for the laptop computer to rest against. These two primary support members are connected by two smaller cross-members that slide onto them along slots that keep all the pieces of the EZ Laptop Stand® fixed, in a rigid, upright formation on which the laptop computer rests. The EZ Laptop Stand® raises the laptop computer high enough to achieve proper ergonomics for the user while allowing comfortable use of onboard keyboard, high enough to allow adequate ventilation for heat dissipation from under the computer, high enough to provide protection from spilled of beverages, and is inexpensive to buy and simple to disassemble and reassemble for easy portability.

The EZ Laptop Stand® is made in 3 different designs called Model A, Model X, and Model U. Model A and Model X are for use on a desktop surface, under any laptop computer, but each one is designed to better accommodate slightly different configurations of laptop computers. Model U is for using a laptop computer while sitting or lying down when the user wishes to use it directly on their lap.

The biomass log fuel has not been commercialized due to difficulties in mass-producing the logs at low cost. The current invention solves this problem by introducing a three-step compaction process: pre-compaction, final compaction, and ejection. While a rotary feeder/compressor is used to perform pre-compaction, a ram driven by a toggle mechanism performs final compaction rapidly and efficiently. A press implementing the three-step compaction is designed and described. This invention should improve the cost-effectiveness of biomass solid fuel or feedstock.

Biomass materials such as yard waste, corn stover and switchgrass are compacted at high pressure to form dense “biomass logs” without binder or heat. Biomass logs serve as a solid fuel for heating buildings, and as feedstock for bio-reactors for liquefaction or gasification. Densifying the uncompacted fluffy biomass reduces space needed for storage, decreases the number of vehicles needed to transport biomass, and increases the energy density of fuel.

The invention discloses a protective sealing door for an underground refuge chamber. The protective sealing door comprises a door frame and a door plate, wherein the door plate is arranged on the door frame through a rotation shaft; a locking mechanism for locking the door plate on the door frame is arranged on the door plate, a plurality of first reinforcing ribs for reinforcing the strength of the door plate are arranged in the door plate; heat-insulating materials, namely aerogel heat-insulating felts are filled among the reinforcing ribs; at least two annular sealing rings, namely flame-resisting sealing rings are arranged at the joint of the door plate and the door frame; and the periphery of the door plate is locked by the locking mechanism. According to the protective sealing door, the aerogel heat-insulating felts which can bear the temperature of 1,400 DEG C to the maximum are filled in the door plate, so that the door plate can resist high temperature generated during explosion, and the high temperature is insulated out of the refuge chamber; at least two sealing rings which are made of flame-resisting, anti-static, high temperature-resisting and oil-resisting materials are arranged on the contact surface of the door plate and the door frame, so that the protective sealing door has a good sealing effect.

The invention relates to a method for separating emulsions of oil and water, the method comprising incorporating a demulsifying-effective amount of a polyorganosiloxane demulsifier into an emulsion comprising an oil phase and an aqueous phase. The invention also relates to compositions containing polyorganosiloxane demulsifier and the water and oil phases of an emulsion.

The image data of a camera system is corrected. The camera system includes a color camera which supplies three output signals to three separate color channels, in the form of output signal vectors. The output signal vectors, the coefficients of which represent the output signals supplied by the color camera to the three color channels in a specific position lying in the range of observation, are multiplied by a correction matrix, particularly a square one. The corrected output signal vectors are then processed further in the camera system.