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511 results about "Low activity" patented technology

Plate mop and mop bucket

The invention creatively discloses a plate mop and mop bucket. The plate mop and mop bucket comprises a plate mop and a mop bucket (2); the lower side of a mop rod (1) is movably connected with a flat mop plate (11); the flat mop plate (11) is provided with mop cloth; the mop bucket (2) is provided with a water squeezing cavity (3) and a cleaning cavity (8) which are mutually separated from each other; the water squeezing cavity (3) is provided with a water squeezing device; the cleaning cavity (8) is internally provided with a cleaning device; during water squeezing, the flat mop plate (11) rotates to a position parallel to the mop rod (1), is mutually positioned to the mop rod (1) and moves up and down relative to the water squeezing device to wring the mop cloth to squeeze water; and a cleaning component used for cleaning the mop cloth is arranged in the cleaning device, and during cleaning, a part of the cleaning component is placed in water, the flat mop plate (11) rotates to the position parallel to the mop rod (1), is mutually positioned to the mop rod (1) and washes the mop cloth through mutual friction between the cleaning component and the mop cloth in the water. After adopting the structure, the plate mop and mop bucket has the advantages of simple and reasonable structure, convenience to operate and use, capability of alternatively carrying out cleaning and dewatering, saving labor by being cleaned in the water with rapid speed, good water squeezing and cleaning effects and the like.
Owner:ZHEJIANG XINGHAO PLASTIC

Hybrid technique for reducing blocking and ringing artifacts in low-bit-rate coding

A power-scalable hybrid technique to reduce blocking and ringing artifacts in low bit-rate block-based video coding is employed in connection with a modified decoder structure. Fast inverse motion compensation is applied directly in the compressed domain, so that the transform (e.g., DCT) coefficients of the current frame can be reconstructed from those of the previous frame. The spatial characteristics of each block is calculated from the DCT coefficients, and each block is classified as either low-activity or high-activity. For each low-activity block, its DC coefficient value and the DC coefficient values of the surrounding eight neighbor blocks are exploited to predict low frequency AC coefficients which reflect the original coefficients before quantization in the encoding stage. The predicted AC coefficients are inserted into the low activity blocks where blocking artifacts are most noticeable. Subject to available resources, this may be followed by spatial domain post-processing, in which two kinds of low-pass filters are adaptively applied, on a block-by-block basis, according to the classification of the particular block. Strong low-pass filtering is applied in low-activity blocks where the blocking artifacts are most noticeable, whereas weak low-pass filtering is applied in high-activity blocks where ringing noise as well as blocking artifacts may exist. In low activity blocks, the blocking artifacts are reduced by one dimensional horizontal and vertical low-pass filters which are selectively applied in either the horizontal and/or vertical direction depending on the locations and absolute values of the predicted AC coefficients. In high activity blocks, de-blocking and de-ringing is conducted by 2- or 3-tap filters, applied horizontally and/or vertically, which makes the architecture simple.
Owner:SEIKO EPSON CORP

Oxide dispersion strengthening low activity martensitic steel material and preparation thereof

InactiveCN101328562AEvenly distributedReasonable grain sizeNeutron irradiationBiological activation
The invention discloses an oxide dispersion strengthened low-activation martensitic steel. A substrate is a CLAM steel and contains 0.2 to 0.5 percent of Y2O3 and 0.10 to 0.50 percent of Ti. The method comprises the following steps that: CLAM steel powder, Y2O3 powder and Ti powder are evenly mixed and put in a sealed container for degassing, subjected to mechanical alloying, hot isostatic pressing or hot-pressing sintering and densification molding under the protection of high-purity argon gas, then subjected to hot squeezing or forging and rolling and other machining and molding processes, and the needed section material is prepared; and finally, the section material is subjected to the treatment of quenching and tempering to prepare the oxide dispersion strengthened low-activation martensitic steel ODS-CLAM. The oxide dispersion strengthened low-activation martensitic steel has the advantages that: the low-activation martensitic steel realizes a martensite-based alloy with oxide strengthening phases evenly dispersed and distributed and crystal grains of a reasonable size, can be used as a structural steel material, has the characteristics of strong neutron irradiation resistance, good high-temperature performance, low activation, etc. and is suitable for a fusion reactor and other environments with strong neutron irradiation and high-temperature.
Owner:INST OF PLASMA PHYSICS CHINESE ACAD OF SCI

ZSM-5/mordenite/Yzeolite intergrowth molecular sieve and synthetic method thereof

The invention relates to a ZSM-5/mordenite/zeolite Y intergrowth molecular sieve and a synthetic method thereof, which mainly solves the problems of singular aperture, rather weak acidity and low activity of porous materials synthesized by the prior art. The invention adopts the technical proposal that the nucleation and process of growth of the molecular sieve are controlled properly by adding crystal seeds containing zeolite Y precursors in the synthetic process of the intergrowth molecular sieve for producing the ZSM-5/mordenite/zeolite Y intergrowth molecular sieve, wherein the proportion of intergrowth phases is adjustable, and the synthesized ZSM-5/mordenite/zeolite Y intergrowth molecular sieve adopts the compositions including the following mole relation: nSiO2:Al2O3, where n is between 4 and 400 in the formula, and the method is characterized in that the ZSM-5/mordenite/zeolite Y intergrowth molecular sieve has more than two phases and an XRD diffraction pattern thereof has the d-space maximum value at the lengths of 14.3+-0.1, 13.58+-0.1, 11.21+-0.1, 10.04+-0.1, 9.47+-0.1, 9.09+-0.1, 6.6+-0.1, 5.7 +-0.1, 4.5+-0.1, 3.98+-0.05, 3.76+-0.04, 3.64+-0.04, 3.53+-0.04, 3.38+-0.02, 3.19+- 0.05 and 2.88+-0.1 angstroms, thereby solving the problems properly. The ZSM-5/mordenite/zeolite Y intergrowth molecular sieve can be used for preparing ethylene and propylene by catalytic-cracking naphtha in the industrial production.
Owner:CHINA PETROLEUM & CHEM CORP +1

Carbon-loaded kernel-shell copper-palladium-platinum catalyst for fuel battery and preparation method thereof

The invention provides a carbon-loaded kernel-shell copper-palladium-platinum catalyst for a fuel battery and a preparation method thereof. Conductive carbon black is used as a carrier, an active component is a copper-palladium-platinum alloy with a nuclear-shell structure, wherein the copper palladium is a kernel, the platinum is a shell, and the catalyst comprises the following ingredients by mass percent: 70 to 91 percent of conductive carbon black, 2 to 10 percent of copper, 2 to 10 percent of palladium and 5 to 10 percent of platinum. A two-step reduction method is utilized, namely, low-activity metal is firstly reduced, then the active precious metal is reduced, the precious metal is precipitated on the surface of the non-precious metal by controlling the reaction temperature and the pH value, and a kernel-shell catalyst is formed through a dealloying step; and in addition, the carbon carrier is added in the preparation process, so that the nano metal particles can directly grow on the carrier, the combination of the catalyst particles and the carbon carrier can be enhanced, and the catalyst is more stable. Due to the adoption of the preparation method, the catalyzing efficiency of the catalyst and the utilization rate of the precious metal can be greatly improved, and the development of the fuel battery can be promoted.
Owner:BEIJING UNIV OF CHEM TECH

Charcoal load nanometer zero-valent iron activated sodium persulfate system and preparation and application thereof

The invention relates to a charcoal loading nanometer zero-valent iron activated sodium persulfate system and preparation and application thereof. Firstly, biomass is burned into charcoal, the charcoal is cleaned and dried after being acidized, and added into a ferrous sulphate solution taking absolute ethyl alcohol and water as a dispersing agent for being stirred fully, then a sodium borohydridesolution is added dropwise to generate the charcoal loading nanometer zero-valent iron; lastly, a composite material prepared with pure water and ethyl alcohol is washed and dried, the obtained charcoal loading nanometer zero-valent iron activated material is placed in the solution, after ultrasonic treatment is carried out, the material is uniformly dispersed in the solution, at the moment, a sodium persulfate solution is added, the mixture is mixed evenly to obtain the charcoal loading nanometer zero-valent iron activated sodium persulfate system. The oxidation system is used for reducing waste, polluted surface water and target pollutants in the underground water, and the problems of the agglomeration and lower activity of sodium persulfate during the use of the nanometer zero-valent iron are solved.
Owner:徐建

Organic aqueous flux for lead-acid storage battery pole group automatic welding and preparation method thereof

The invention discloses organic aqueous flux for lead-acid storage battery pole group automatic welding and a preparation method thereof, which belong to the technical field of aqueous organic flux. The organic aqueous flux for lead-acid storage battery pole group automatic welding mainly solves the problems of susceptibility to solidification in winter, low activity, low lead and calcium alloy welding effect, influences on battery performance due to phosphoric acid and the other inorganic flux of the conventional oil flux. The organic aqueous flux is mainly characterized by being prepared from 35 to 55 percent of organic acid activating agent, 20 to 35 percent of high-boiling-point solvent, 3 to 5 percent of wetting agent, 0.5 to 1 percent of surfactant, 0.5 to 1.5 percent of corrosion inhibitor, 3 to 5 percent of activity enhancer and the balance of deionized water. The preparation method comprises: adding the solvent into stainless steel kettle with stirring at normal temperature, starting a stirrer, adding other solid raw material, stirring till all solid dissolves, stopping stirring, filtering with a 200-mesh sieve and filling. The organic aqueous flux has the characteristics of high welding capacity, high wetting performance, no corrosion and residue, low price and simple preparation method and is mainly used for automatically welding lead-acid storage batteries.
Owner:CAMEL GROUP CO LTD

Preparation method for producing heparin sodium by using porcine small intestines

ActiveCN102229681ALittle loss of activityHigh potencySodium heparinPollution
The invention discloses a preparation method for separating biochemical medicaments from mucous membranes of porcine small intestines, in particular a preparation method for producing heparin sodium by using porcine small intestines. The preparation method for producing the heparin sodium by using the porcine small intestines is characterized by comprising the following steps of: preparing intestinal mucosa, and performing enzymolysis, adsorption, elution, precipitation, desalination, dehydration and drying to obtain the heparin sodium. The method has the advantages that: the heparin sodium has high yield, low activity loss and stable quality; the waste liquor is pollution-free in discharge and can be recycled; the problem of stench in a heparin sodium workshop is solved by adopting a workshop waste gas purification treatment device; and 2,000 to 2,400 pieces of porcine small intestines are needed for producing 0.1 billion units of heparin sodium by using the conventional process, only 1,400 to 1,600 pieces of porcine small intestines are needed for producing 0.1 billion units of heparin sodium by using the preparation method, and the effect and the activity of the heparin sodium are greatly improved, so that the production cost is greatly reduced, and the profit can be improved by over 40 percent.
Owner:山东绅联药业股份有限公司

Magnetic-stability fluidized bed photocatalytic reactor and method for treating organic wastewater with difficult degradation thereby

The invention relates to wastewater treatment method and device, in particular to a magnetic-stability fluidized bed photocatalytic reactor and a method for treating organic wastewater with difficult degradation thereby. The method solves the problems of low photocatalytic quantum, low activity and easy loss of active components existing in the traditional photocatalytic method and comprises the following steps of: feeding the organic wastewater to a reactor through a pump and a liquid inlet, adding a magnetism-loaded photocatalyst to the reactor through a catalyst feeding port, starting a fan to make air pass through a flow buffer and then enter an air distributor and make the magnetism-loaded photocatalyst be in a suspension state; starting Helmholtz coils to generate a magnetic field, opening an ultraviolet lamp when the magnetism-loaded photocatalyst is in the suspension state to degrade the organic wastewater, and then discharging the treated organic wastewater to a second liquid storage tank. The utilization rate of light energy can be improved, and because the magnetism-loaded photocatalyst is in the stable suspension state, the active component loss caused by mutual friction can be reduced; and the device has the advantages of compact structure, mild condition and high utilization rate of the light energy and can operate intermittently and run continuously.
Owner:太原市恒远化工环保科技有限公司

Method for effectively improving hardware Trojan activation probability

InactiveCN106778263AHigh activation rateIncrease activationPlatform integrity maintainanceLow activityHardware Trojan
The invention relates to the technical field of integrated circuit trustworthiness detection, in order to effectively remove the low activity node in the circuit, to improve the activation of the circuit, to greatly shorten the activation time of the low active node and to reduce the random and the uncertainty of the activation time of the hardware Trojan horse in the process of the hardware Trojan horse detection to a great extent. In addition, in the combination of the bypass signal analysis method or the logic test method, the activation time of the hardware Trojan horse is greatly shortened and the detection rate of the hardware Trojan horse is effectively increased. The technical proposal of the method for effectively improving the hardware Trojan horse activation probability is an effective method for improving the activation probability of the hardware Trojan horse. The method comprises the following steps that1, generating a random test vector and an excitation circuit; 2, counting the transition information of each node of the circuit; 3, setting the critical probability threshold; 4, determining the location of the implanted node; 5, integrating the circuit and detecting. The integrated circuit trustworthiness detection is mainly applied to the case of the integrated circuit trustworthiness detection.
Owner:TIANJIN UNIV

Porous-ceramic with uniformly through ducts as well as preparation method and use of porous-ceramic

ActiveCN104909820AUniform poresHigh strengthCeramicwareLow activityFlue gas
The invention discloses a porous-ceramic with uniformly through ducts as well as a preparation method and use of the porous-ceramic. The invention discloses a preparation method of the porous-ceramic with three-dimensionally through ducts, uniform porosity distribution and adjustable pore-size linearity. A raw material adopted by the invention is uniform low-activity compact spherical particles, the contact parts of the spherical particles are used for providing ceramic strength while a sintering neck is formed through sintering, and a three-dimensional duct is formed by stacking gap of the spherical particles. The typical preparation method comprises the following steps: mixing a certain amount of organic monomers such as MBAM, (NH4)2S2O4 and TEMED to prepare a premixed solution, pouring the premixed solution into the low-activity compact spherical particles, controlling the adding amount of the premixed solution, and realizing tight stacking of the spherical particles by using a certain method; curing the stacked particle accumulation body at a certain temperature; and drying and sintering the cured blank body to obtain the porous-ceramic. The porous-ceramic prepared through the invention has good separation efficiency and flux on the separation of the oil-water mixture, and can be widely applied to the fields of high-temperature flue gas and melt filtering.
Owner:INST OF PROCESS ENG CHINESE ACAD OF SCI
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