93 results about "Degradation Problem" patented technology

A method of improving and strengthening the performance of metal and protecting the metal against degradation and suppression thereof by controlling ultrasonic impact is disclosed. The method addresses the problems of degradation of metal properties during prolonged service under external forces, thermodynamic fluctuations and negative environmental factors. The method also relates to the technologies oriented to protect against (prevent) and to suppress the danger of materials failure due to unfavorable change in performance over time. The well-known methods of “combating” metal degradation cover a wide range of technologies from metallurgical alloying during melting, casting, welding and application of coatings to various thermal treatments and effects on the surface. The invention provides a new versatile method of addressing degradation problems in all these cases.

An optical beam splitter for use in an optoelectronic module and method are provided. The optical beam splitter is configured to split a main beam produced by a laser into at least first and second light portions that have different optical power levels. The first light portion, which is to be coupled into an end of a transmit optical fiber of an optical communications link, has an optical power level that is within eye safety limits and yet has sufficient optical power to avoid signal degradation problems. The optical power level of the first light portion is less than the optical power level of the second light portion. The optical beam splitter is capable of being implemented in a unidirectional or a bidirectional optical link.

The invention discloses a special calcium silicon-rich controlled release fertilizer for southern paddy rice and a preparation method thereof. The calcium silicon-rich controlled release fertilizer is made from the following raw materials in parts by weight: 50-70 parts of a 5% special calcium silicate coated compound fertilizer for paddy rice, 10-30 parts of a 8% special calcium silicate coated compound fertilizer for paddy rice, 20-40 parts of a special compound fertilizer for paddy rice and 1-3 parts of zinc sulfate. The 5% special calcium silicate coated compound fertilizer for paddy rice and the 8% special calcium silicate coated compound fertilizer for paddy rice respectively mean that mass of calcium silicate coated layers account for 5% and 8% of total mass. Contents of nitrogen, phosphorous and potassium in the special compound fertilizer for paddy rice are 18%, 8% and 20% respectively. In the controlled release fertilizer, nutrients are regularly released, which is identical with nutrient absorption rules of southern paddy rice; membrane materials are cheap and available, do not have degradation problem and are environment-friendly. The controlled release fertilizer is once applied before transplanting paddy rice, an additional fertilizer is no longer required, and application amount of the controlled release fertilizer is reduced by 20% of that of common fertilizers, thus reducing labor intensity and fertilizer fund input of farmers.

The invention discloses a microorganism and enzyme powder composite biological agent for a microbial organic fertilizer, which consists of 25 percent of various microbial agents, 23 percent of various bio-enzyme preparations, 30 to 35 percent of microbial nutrition agent, 5 percent of mordenite, 8 percent of dolomite, 3 percent of potassium fulvic acid, and the balance of water. The invention provides the microorganism and enzyme composite biological agent for promoting the high-quality and high-yield production of the microbial organic fertilizer, which is formed by compounding purely natural microorganism and enzyme, and integrates the advantages of the microbial agents and the enzyme preparation, and has the biocatalyst and biological degradation function; when used in a compost, the microorganism and enzyme composite biological agent accelerates the degradation speed of organic matters, makes the temperature of the composting materials rise in a short time (24 hours), eliminates the situations such as strong smelling and mosquitoes and flies breeding, and the like caused in the composting process of the biological organic raw materials, reduces the emission of massive pollution gases, and kills the noxious weeds, pathogenic bacteria and ova in the raw materials, and improves the content of organic matters of the composting product; improves the insect resistance capability of crops, and improves the soil degradation problems caused by the fertilizer.

The invention discloses a frequency domain OFDM symbol generation method and a preamble symbol generation method. The frequency domain OFDM symbol generation method comprises the steps of: generating fixed sequences and signaling sequences in a frequency domain respectively; filling the fixed sequences and the signaling sequences which are arranged in an odd even interleaving manner to an effective subcarrier; and filling zero-sequence subcarriers on both sides of the effective subcarrier to form a frequency domain OFDM symbol with a preset length. According to the technical scheme provided by the invention, the frequency domain OFDM symbol generation method and preamble symbol generation method prevent the generated signaling sequences from having a property of circular shift or circular shift plus phase shift in a time domain, solves the degradation problem of channel estimation performance of the frequency domain, and further ensures that a receiving end can process and receive signals when carrier frequency deviation ranges from -500kHz to 500kHz.

The invention discloses an aviation power converter failure prediction method based on factional order UPE. According to the method, firstly, state signals of measurement points of an aviation power converter are collected in real time, failure characteristic parameters reflecting the performance degradation condition of the aviation power converter are extracted, and history time sequence values of the failure characteristic parameters are obtained; then, a state equation of the performance degradation process of the aviation power converter is trained on the basis of an LS-SVM model, and a fractional order state space model of the performance degradation process of the aviation power converter is built; ultimately, by combination of the fractional order state space model, time sequence prediction is carried out on the failure characteristic parameters by means of the fractional order UPE, and failure prediction of the aviation power converter is achieved. The invention provides the aviation power converter failure prediction method based on an improved PF algorithm, proposal distribution of particles is generated by means of the fractional order UKF algorithm, a particle degradation problem of a traditional PF algorithm is solved, the performance degradation process of the converter is described by means of the fractional order state space model so as to accord with practical situations, and failure prediction precision of the aviation power converter is improved.

The invention relates to a formula and a preparation method of an injection-molded high-thermal-conductivity insulation polyester composite material. The heat conduction coefficient is higher than 0.78W/m.K. The material is composed of the components of, by weight: 100 parts of polyester, 50-200 parts of a high-thermal-conductivity filling material, 50-200 parts of metal oxide, 0-30 parts of alkali-free glass fiber, 0-20 parts of a toughening agent, 0-10 parts of a compatilizer, 0.5-3 parts of a coupling agent, and 1-5 parts of an active multi-functional-group compound. The characteristics of the preparation method are that: metal oxide pre-coating treatment and active multi-functional-group compound adding methods cooperates, such that a polyester degradation problem during a processing process is solved. Also, belt conveying, air-cooling, and hot cutting technologies are adopted, such that the steps are simplified, and time is saved.

The invention provides a suspension liquid compound fertilizer capable of rapidly disintegrating, and the suspension liquid compound fertilizer comprises a thickening agent, a dispersing agent, a disintegrating agent, fertilizer nutrients and water, wherein the fertilizer nutrients include nitrogen fertilizer, phosphate fertilizer, potash fertilizer, humic acid and trace elements. The optimization of composition of the thickening agent, the dispersing agent and the disintegrating agent, under the condition of maintaining stable physical properties of the suspension liquid compound fertilizer, the disintegrating agent allows the suspension liquid compound fertilizer to be rapidly disintegrated, and significantly quickens dissolving speed, improves the using efficiency of the suspension fertilizer, in addition, the technological problem of matched use of the trace elements, the humic acid and the fertilizer can be solved, major element and trace element nutrients and organic matters required for crop growth and development are provided, deficiency symptoms in the crop growth process can be solved, soil degradation problem caused by long-term application of chemical fertilizers can be alleviated, and the domestic blank is filled. The suspension liquid compound fertilizer has the advantages of low production cost, simple equipment and less investment, and ultimately reduces the cost of agricultural production.

Color shutters that include reflecting linear polarizers can be used in projection display applications. The reflecting linear polarizers are used to reflect the light that would have been absorbed by prior art color shutters. The use of reflecting linear polarizers can resolve overheating and degradation problems of prior art system and projection display systems using sequential color operation can be built and operate reliably.

Disclosed are a FinFET diode of high efficiency, designed to resolve the degradation problem with a conventional FinFET diode arising from reduced active area, and a method of fabrication. The FinFET diode has a doped substrate, two spaced-apart groups of substantially parallel, equally-spaced, elongated semiconductor fin structures, dielectric layers formed between the two groups and among the fin structures for insulation, a plurality of substantially equal-spaced and parallel elongated gate structures perpendicularly traversing both groups of the fin structures, and two groups of semiconductor strips respectively formed lengthwise upon the two groups of the fin structures. The two groups of semiconductor strips are doped to have opposite conductivity types, p-type and n-type. The FinFET diode further has metal contacts formed upon the semiconductor strips. In an embodiment, the semiconductor strips may be integrally formed with the fin structures by epitaxial growth and in-situ doped.

The invention relates to a preparation method of a Ba ion doped Na-beta'-Al2O3 solid electrolyte and a solid electrolyte prepared by using the same. In the method, a salt containing metal sodium and aluminum is used as a raw material, a salt containing metal lithium or magnesium is used as a stabilizing agent, a salt containing metal barium is especially used as a regulating agent, three precursor powders comprising Na2O.5Al2O3, Li2O.5Al2O3 or MgO.5Al2O3, and BaO.5AL2O3 are respectively prepared by using a sol-gel method, and the target product of (1-3x)Na2O.2xMgO.xBaO.5Al2O3 or (1-3x)Na2O.2xLiO.xBaO.5Al2O3 is prepared, wherein x is greater than 0.02 and smaller than 0.1. Compared with a Na-beta'-Al2O3 solid electrolyte prepared by the conventional method, the Na-beta'-Al2O3 solid electrolyte prepared by the method has the characteristics of higher density, higher strength and higher conductivity, the degradation problem of the solid electrolyte is solved, the service life is prolonged, and thus, the solid electrolyte has wide application prospect.

The invention discloses a fat-soluble composite vitamin I composition freeze-dried powder injection. The fat-soluble composite vitamin I composition freeze-dried powder injection is safe and reliable, has stable quality and is prepared from vitamin A palmitate, vitamin K1, vitamin E, vitamin D2, povidone, propyl gallate, polysorbate 80, mannitol and injection water. The fat-soluble composite vitamin I composition freeze-dried powder injection and the preparation method thereof thoroughly solve that the existing fat-soluble composite vitamin freeze-dried powder injection can not be stored for a long time and the content of related substances is very high and can not be controlled so that injection safety problems and active substance degradation problems are caused. In the clinical use, the fat-soluble composite vitamin I composition freeze-dried powder injection is safe, has stable quality and can be stored for a long time.

The invention discloses a biomass-based polymer coated controlled release fertilizer and a production method thereof. The production method of the biomass-based polymer coated controlled release fertilizer comprises the steps of 1) uniformly mixing up straw powders, starch, a liquefying agent and an acid catalyst, subjecting an obtained mixture to co-liquefaction reaction, cooling an obtained product after the completion of the reaction, collecting a supernatant, namely a co-liquefaction liquid; 2) uniformly mixing up the co-liquefaction liquid with polyether polyol, a basic catalyst and an auxiliary agent, and subjecting an obtained mixture to reaction to obtain a co-liquefaction coating liquid; 3) simultaneously spraying the co-liquefaction coating liquid and a curing agent onto a pre-heated fertilizer particle surface to form a film. In this way, the coated controlled release fertilizer is obtained. The nutrient release longevity of the coated controlled release fertilizer is 1 to 12 months. According to the technical scheme of the invention, the product obtained through the co-liquefaction reaction of easily liquefied powders and straws is adopted as one raw material of the coating material. In this way, not only the production cost is lowered, but also the difficult degradation problem of the film layer of the coated controlled-release fertilizer is also solved.

An improved directional coupler that significantly reduces the signal degradation problems associated with distortion caused by circuit elements used to measure the transmitted power. In a selected embodiment, the directional coupler of the present invention comprises a plurality of active elements, such as capacitors, that have values selected to ensure that the distortion created by circuit elements used to measure forward transmitted power. In an embodiment of the invention, capacitors have values selected to minimize in-band distortion signals at the fundamental carrier frequency of the transmitted signal and also at the second and third harmonics of the fundamental carrier frequency.

The invention relates to an adsorption-catalytic oxidation degrading method for phenol in waste water, and belongs to the technical field of water treatment. The method is characterized in that active carbon fibers which are loaded with ferroferric oxide are used as an adsorption agent and filled in an adsorption tower so as to adsorb the waste water containing phenol; hydrogen peroxide aqueous solution is added into the adsorption tower, air is also blown into the adsorption tower, and the mixed system is oxidized for 1h to 3h, so that the adsorption agent is regenerated, and then the waste water containing phenol is inputted to be circularly adsorbed. By adopting the method, the desorption regeneration problem of the active carbon fibers after adsorbing phenol, the degradation problem of the desorbed phenol and the high energy consumption problem of the catalytic wet-type hydrogen peroxide oxidation technology in treating the waste water containing a great amount of phenol can be solved. The method has the advantages of simple process, easiness in operation, no secondary pollution on the environment and the like.

The invention relates to an ecological remediation method for a slope of a broken mountain. Ecological remediation can be conducted on a steep cliff wall slope of which the slope surface is smooth andlevel by constructing a slope remediation structure composed of a large-pore vegetation concrete layer, a substrate material layer and a small-pore vegetation concrete layer. The surface roughness ofthe slope sprayed with the large-pore vegetation concrete layer is significantly increased, a substrate material which is subsequently sprayed can not be prone to sliding down, small-pore vegetationconcrete is sprayed to the outer layer of the substrate material, therefore, through the double-layer vegetation concrete structure, it can be better guaranteed that the substrate material is attachedto the slope, and sliding and rain water scouring are avoided. In addition, the large-pore structure of the large-pore vegetation concrete layer is more beneficial for growth of a plant root system,the small-pore vegetation concrete layer can purify non-point source pollution, rotten ecological desilting sludge is added into the substrate material, and the vegetation degradation problem caused by insufficient fertility is solved.

A method and apparatus for detecting lubricant depletion in a disk drive is provided. Disk operation performance parameters are monitored for each of a plurality of zones on the surface of the disk and stored. Examples of performance parameters include dwell time, flying height changes, and data recovery measurements. The performance parameters are compared against predetermined threshold values. If the performance parameters exceed the predetermined threshold values for any of the zones, a potential lubricant depletion or other general degradation problem is flagged for the corresponding zone. Optionally, when a potential lubricant depletion problem is flagged for a particular zone, corrective action is taken. Examples of corrective action include moving recently accessed data from the flagged zone to a zone not identified as having a lubricant depletion problem, moving older archival data to the flagged zone, and/or removing access to the flagged zone.

The invention discloses a method, device and equipment for counting number of dense people and a computer readable storage medium, and the method comprises the steps: inputting a to-be-tested image into a pre-trained target residual multi-scale convolutional neural network, and enabling a residual unit to be arranged between two pre-selected convolutional layers in the target residual multi-scaleconvolutional neural network; processing the to-be-tested image by using the target residual multi-scale convolutional neural network to obtain an estimated density map of the to-be-tested image, andoutputting the estimated density map; and determining the number of people in the to-be-tested image according to the target estimation density map. According to the method, the device, the equipmentand the computer readable storage medium provided by the invention, the degradation problem of the network is effectively solved by utilizing the residual error unit, so that the counting error of thesecret-level crowd is effectively reduced.

The invention discloses a preparation method of a low-on-resistance high-threshold-value voltage enhancement type GaN device. The preparation method specifically comprises the steps of performing epitaxial growth of a buffer layer, a channel layer, an inserting layer and a barrier layer on a substrate in sequence; preparing a selective growth mask layer; performing etching on an external channel selective growth mask layer; performing selective epitaxial growth of an external channel layer; removing a selective growth mask; preparing a selective growth mask layer; performing etching of a gate selective growth region mask layer; performing selective growth of the barrier layer; removing the selective growth mask layer and the external channel layer thereon; preparing source and drain metals and alloy; and preparing a gate metal. The enhancement type GaN device has the advantages of low on-resistance, high threshold value voltage and uniformity, high freedom degree of internal and external channel materials, no dynamic characteristic degradation problem of the device caused by loss and defects, and the like.

The invention discloses a pseudomonas sp. XQ23 capable of efficiently degrading multiple phenolic compounds. The strain of the pseudomonas sp. XQ23 is separated and purified from sludge which is seriously polluted by phenols. The strain has been preserved in China Center for Type Culture Collection since August 8th, 2009, and the preservation No. is CCTCC M 209175. The invention belongs to the technical field of environmental protection, and especially aims to the degradation problem of phenolic compounds in phenol-containing sewage generated in the petroleum refining process. Ten phenolic compounds, such as phenol, methyl phenol and the like, generally account for more than 97% of the total phenol content in the phenol-containing sewage. The strain is inoculated to the water body which contains one, or some or all of the ten phenolic compounds, and necessary inorganic salts are added; and while controlling the reaction temperature at 30+/-2 DEG C and the controlling initial pH value to 7.0+/-0.2 during degrading, the strain can completely degrade the phenolic compounds within shorter time under aerobic conditions.

The invention discloses a perovskite solar cell based on a double-layer composite hole transport layer and a preparation method. An electron transport layer, a perovskite structure light absorption layer, an organic-inorganic double-layer composite hole transport layer and a top electrode are sequentially prepared on a transparent conductive substrate. The specific process for preparing the organic-inorganic double-layer composite hole transport layer comprises the following steps of: introducing oxygen into a Spiro-OMeTAD solution for oxidation, stirring, carrying out spin coating to prepare a pre-oxidization Spiro-OMeTAD hole transport layer, and preparing an inorganic hole transport layer from an inorganic hole material solution. According to the invention, based on the organic-inorganic double-layer hole transport layer, through the pre-oxidation Spiro-OMeTAD hole transport layer and the inorganic hole transport layer, the perovskite thin film degradation problem caused by the post-oxidation of a traditional hole transport layer can be effectively inhibited and the carrier transport capability and the energy band matching of the hole transport layer are remarkably improved, so that the performance of the perovskite solar cell is improved.

[Object] To provide a catalyst for nitrogen oxide removal having no degradation problem caused by adsorbed water when a temperature is raised sharply and exhibiting excellent nitrogen oxide removal performance and retentive characteristic thereof.

[Solution] A catalyst for nitrogen oxide removal, containing a metal-loading zeolite, wherein the zeolite contains a silicon atom, an aluminum atom, and a phosphorus atom in a framework structure, and the amount of water adsorption of the catalyst at 25° C. and a relative vapor pressure of 0.5 is 0.05 to 0.2 (kg-water/kg-catalyst) or less. A method for manufacturing this catalyst for nitrogen oxide removal, the method including the steps of drying a mixed slurry containing a metal source, the zeolite, and metal oxide particles having an average particle diameter of 0.1 to 10 μm and/or an inorganic binder and calcining the resulting dry powder.