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1070results about How to "Increase spawn rate" patented technology

Random number generator and method for generating random numbers

The invention relates to a method for generating random numbers in which oscillating digital output signals (A1, A2, . . . , AL) of unequal or equal periodicity are generated by at least two ring oscillators (32, 33, 34), an external parity signal (PS) representing a logical state (“0,”“1”) being generated when an odd number of the output signals (A1, A2, . . . , AL) take on a specified logical state (“1”). According to the invention, the external parity signal (PS) is fed back to an external parity input (36, 37, 38) of each of the respective ring oscillators (32, 33, 34). The invention further relates to a random number generator having at least two ring oscillators (32, 33, 34), made up in particular of independently free-running inverter chains with feedback having an odd number (K) of series-connected inverters (inv1,2, inv2,1, inv3,1, . . . , invi,j, . . . , invL,KL) that generate oscillating digital output signals (A1, A2, . . . , AL) of unequal or equal periodicity, and having first parity signal generating means (XOR) that generate an external parity signal (PS) representing a logical state (“0,”“1”) when an odd number of the output signals (A1, A2, . . . , AL) take on a specified logical state (“1”). According to the invention, there are feedback means (xor1, xor2, xor3, xor4, . . . , xorL) that feed back the external parity signal (PS) to an external parity input (36, 37, 38) of each of the respective ring oscillators (32, 33, 34). In this invention the cooperation of chaotic dynamics (feedback of the parity signal) and true randomness (jitter due to thermal noise) in digital circuits, a novel theoretical principle for generating random numbers, has been made into an efficient practical solution.
Owner:TDK MICRONAS GMBH

Synthetic combinatorial aav capsid library for targeted gene therapy

InactiveUS20160369298A1Increase spawn rateEffectively targeting specific tissues and/or organsGenetic material ingredientsVirus peptidesAdeno associate virusAdeno-associated virus
Disclosed are compositions and methods for producing modified adeno-associated virus (AAV) cap genes and combinatorial libraries of chimeric AAV vectors and virions; selecting for virions displaying cell-specific tropisms; and, in certain embodiments, producing helper vectors containing one or more modified AAV cap genes. The synthetic combinatorial AAV capsid libraries of the invention are useful in introducing into selected target host cells one or more nucleic acid molecules. The viral vectors and genetic constructs disclosed herein are also useful in a variety of diagnostic and / or therapeutic gene-therapy regimens.
Owner:UNIV OF FLORIDA RES FOUNDATION INC

Semiconductor device and method for producing semiconductor device

Hydrogen atoms and crystal defects are introduced into an n− semiconductor substrate by proton implantation. The crystal defects are generated in the n− semiconductor substrate by electron beam irradiation before or after the proton implantation. Then, a heat treatment for generating donors is performed. The amount of crystal defects is appropriately controlled during the heat treatment for generating donors to increase a donor generation rate. In addition, when the heat treatment for generating donors ends, the crystal defects formed by the electron beam irradiation and the proton implantation are recovered and controlled to an appropriate amount of crystal defects. Therefore, for example, it is possible to improve a breakdown voltage and reduce a leakage current.
Owner:FUJI ELECTRIC CO LTD

Mobile station, and apparatus, system and method for management of emergency calls

The invention comprises emergency call management apparatus (31) and a mobile station (1). The emergency call management apparatus (31) monitors the emergency call generation rate, which is indicative of the rate of generation of emergency calls in a network, and on the basis of the result of this monitoring, transmits state information indicative of the restriction state of communication in that network, when the emergency call generation rate attains a preset condition. The mobile station (1) has emergency number information indicative of a number to be dialed to make an emergency call, and transmits, on the basis of the emergency number information and the received state information, a connection request to the network when the restriction state is a state in which only that emergency call is accepted and the number that has been dialed is the number to be dialed to make that emergency call. This provides a higher probability that an emergency call will be processed in situations in which there is a high rate of generation of emergency calls. This is because in such situations the network only has to process emergency calls.
Owner:NEC CORP

Preparation method of metal halide inorganic perovskite quantum dots

The invention discloses a preparation method of metal halide inorganic perovskite quantum dots. The method includes the steps of firstly, dissolving metal halide salt BX2 and AX in DMSO, and adding surface active agents; secondly, rapidly injecting the mixed liquid in reaction solvent; thirdly, making BX2 and AX rapidly react under the effect of the surface active agent to generate the ABX3 type metal halide inorganic perovskite quantum dots of different morphologies. According to the method, in the low-temperature solution method system, by using different surface active agents and reaction solvent for changing the morphologies of the metal halide inorganic perovskite quantum dots, the performance of the metal halide inorganic perovskite quantum dots is regulated and controlled, and the method has profound significance in constructing high-performance full-solution photoelectric devices.
Owner:NANJING UNIV OF SCI & TECH

Hash tree-based data dynamic operation verifiability method

InactiveCN103218574AReliable communication channelShorten the timeDigital data protectionThird partyData file
The invention discloses a hash tree-based data dynamic operation verifiability method, which consists of three parts, i.e., a USER, a cloud data center (CDC) and a third party administrator (TPA) connected through a communication network, wherein the USER is used as a party of making a data memory service request, who hopes to store a data file owned by the party into a cloud storage space of the cloud data center, and can be both a personal user and an enterprise user; the CDC is used for responding to the data storage service request of the USER, storing the data file of the USER into the huge data center of the CDC according to a certain rule and managing and maintaining the data file; and the TPA is used as a reliable TPA and is commissioned by the USER to check the completeness and the consistency of the data file stored in the CDC data center. According to the hash tree-based data dynamic operation verifiability method, the verification problem of the completeness and the consistency of the user data file under a cloud computing environment is solved.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Fuel cell system utilizing control of operating current to adjust moisture content within fuel cell

In a fuel cell system utilizing fuel cells which generate electric power by a reaction between oxygen and hydrogen, the moisture content within a fuel cell is adjusted to be brought within an appropriate range by adjusting the operating current of the fuel cell. The total amount of electric power generated by the system is maintained at a required value by supplying / obtaining electric power to / from a secondary battery as required, or by utilizing a plurality of separately controlled fuel cells (or fuel cell stacks) and increasing or decreasing the electric power generated by another fuel cell or stack that is currently operating with an appropriate moisture content.
Owner:DENSO CORP

Quantum key distribution after-treatment system and method based on polar code correction

The invention discloses a quantum key distribution after-treatment system and a quantum key distribution after-treatment method based on polar code correction. The system comprises a key screening module, a parameter estimation module, a polar code correction module, a consistency verification module and a privacy amplification module which are connected in sequence. The method comprises the following steps: only keeping original keys with the same base selection to form screening keys after quantum bite information is transmitted on a quantum channel; commonly selecting partial key bits from the screening keys to perform disclosed comparison; coding and decoding undisclosed key bits by adopting a system polar code algorithm under the condition that the quantum bit error rate is not higher than a safety threshold value; verifying the consistence of the corrected quantum keys by adopting cryptographic algorithm; and calculating safety information entropy and performing information compression to obtain absolutely safe key bits. The quantum key distribution after-treatment system has linear coding / decoding complexity characteristics, so that the after-treatment time delay and key length increase have linear relationship, and the after-treatment speed is improved.
Owner:JINAN UNIVERSITY

Wastewater treatment device of horizontal polar plate multi-electrodes electrocatalysis reactor

Horizontal polar plate multi-dimensional electrode electrocatalysis reactor wastewater treatment equipment comprises a shell, a cathode plate and an anode plate which are relatively parallel, a particle electrode filled between the cathode plate and the anode plate, a water distributor, a water inlet pipe, an aerator, an air inlet pipe, an effluent weir trough, a water outlet pipe and a power supply; the cathode plate and the anode plate are respectively connected with the cathode and the anode of the power supply; a plurality of through holes are distributed on the cathode plate and the anode plate which are horizontally positioned in the shell of the equipment; the water distributor, the water inlet pipe, the aerator and the air inlet pipe are positioned at the lower part of the shell of the equipment; and the effluent weir trough and the water outlet pipe are arranged at the upper part of the shell of the equipment. After being evenly distributed by the water distributor, the wastewater flows across a reactor from bottom to top; the horizontal polar plate structure design not only avoids the short circuit of water flow and improves the mass transfer effect, but also ensures that the wastewater can alternatively flow across the cathode plate and the anode plate and the oxidation reaction of the anode plate and the reduction reaction of the cathode plate coexist in a system, and causes different organic pollutants in wastewater which can be degraded by the oxidation reaction and the reduction reaction to be degraded and treated.
Owner:南京赛佳环保实业有限公司

Method for preparing perovskite quantum dots by low-temperature solution process

The invention relates to a method for synthesizing high-luminescence-efficiency wide-color-range metal halide perovskite quantum dots by a low-temperature solution process. A solution injection process is utilized to synthesize the uniform-size high-dispersity metal halide perovskite quantum dots. The method comprises the following steps: keeping a reaction solvent at a certain temperature while stirring, quickly injecting a metal halide precursor salt into the reaction solvent, and finally, carrying out water cooling to room temperature, thereby obtaining the metal halide perovskite quantum dots with very high luminescence efficiency. The halogen doping ratio can be adjusted to obtain the color light with all wavelengths from infrared light to ultraviolet light, and thus, the perovskite quantum dots have wide luminescence range.
Owner:NANJING UNIV OF SCI & TECH

Ecological breeding method of quasipaa spinosas

InactiveCN101731180AIncrease egg productionRealize pollution-free ecological farmingAnimal feeding stuffEcological environmentQuasipaa
The invention relates to an ecological breeding method of quasipaa spinosas. The method comprises the steps of strain selection, hybridization, egg laying, hatching, pollywog culturing and young quasipaa spinosa breeding. The ecological breeding method has the advantages that three quasipaa spinosa strains bred by the method have great egg laying amount and fast growing speed; the quasipaa spinosas are fed at the temperature of over 12 DEG C in winter to reduce inner energy consumption in winter and maintain good development of sex glands of the quasipaa spinosas; water current stimulates the quasipaa spinosas to lay eggs, which increases egg laying rate and hatching rate of breeder quasipaa spinosas; and according to the method, quasipaa spinosa breeding ponds can prevent escape, diseases and natural enemies and are propitious to increase survive rate, thereby realizing pollution-free ecological breeding of the quasipaa spinosas. The ecological breeding method of the quasipaa spinosas is provided with breeding ponds for drip egg-laying breeding and winter food supplementing and simulates ecological environment.
Owner:JIANGXI SANGAO LVJIAN AGRI HLDG

Machine-readable medium for storing a stream data processing program and computer system

In a stream data processing method in which part of stream data is defined as a processing target and the time control information which indicates the advance of the time is inserted into the stream data, time information of the received stream data is stored in a next ignition time holding area as an ignition time. A processing module for generating the time control information at a time different from the time of reception of the stream data is extracted out of a query that indicates how the stream data is to be processed. Based on the extracted processing module and the time information indicating the time of the reception of the stream data, the ignition time is calculated and stored in the next ignition time holding area. The time generation module inserts the time control information at the ignition time held in the next ignition time holding area.
Owner:HITACHI LTD

Preparation method of loading iron based metal organic skeleton out phase Fenton catalyst and application thereof

The invention relates to a preparation method of a loading iron based metal organic skeleton out-phase Fenton catalyst and an application thereof. The preparation method comprises the following steps of by taking MIL-100 (Fe) as a basal body, loading a ferrous component through a hydrothermal method so as to obtain the loading iron based metal organic skeleton out-phase Fenton catalyst, namely Fell@ MIL-100 (Fe). The catalyst is used for degrading an organic pollutant in waste water by using an out-phase Fenton catalyst system. Compared with the prior art, the loading catalyst prepared by the invention fully utilizes the advantages of MIL-100 (Fe) and a ferrous component in an out-phase Fenton reaction, so that the loading catalyst has high porosity, large specific surface area, and is stable in a water phase, catalytic activity sites are uniformly dispersed, the capacity is controllable and the like, meanwhile, the mutual circulation action of the Fe<2+> component in a carrier and a Fe<3+> in the basal body are utilized to further strengthen the Fenton reaction activity, the catalyst is suitable for removing refractory organics in waste water by catalytic oxidation of out-phase Fenton, the operation of the technology is simple, the cost is low, the preparation method is an efficient and energy-saving new technology, and the catalyst has the far-reaching application prospect and wide social and economic benefits.
Owner:TONGJI UNIV

Granular electrode catalyst stuffing for 3D electrode reactor and its preparing method

The present invention is granular electrode catalyst stuffing for 3D electrode reactor and its preparation process. The electrode catalyst stuffing consists of modified active carbon 60-70 wt% and film coating active carbon 40-30 wt%. The modified active carbon is prepared with active carbon through acid or alkali modification, oxidizing modification and metal supporting modification; and the film coating active carbon is prepared with active carbon through acid or alkali modification and soaking in cellulose acetate solution. The 3D granular electrode stuffing is used in waste water treatment, and has the advantages of great adsorption capacity, fast reaction speed, stable treating effect, etc.
Owner:NANJING UNIV OF TECH

Self-absorption air type cyclone foaming device for dust removal of coal mine

The invention discloses a self-absorption air type cyclone foaming device for dust removal of coal mine. The device mainly comprises a foaming liquid supply pipe, a jet flow nozzle, an air suction mixing barrel body and a foaming barrel body, wherein the foaming liquid supply pipe is connected with the jet flow nozzle; an air suction chamber, an air and liquid mixing chamber and a diffusion foaming chamber are sequentially arranged inside the air suction mixing barrel body; the jet flow nozzle is connected to the air suction chamber; an air suction hole is formed in the air suction chamber; and a cyclone foaming chamber and a foam flow-out chamber are sequentially arranged inside the foaming barrel body. Foaming liquid with set pressure is sprayed at high speed through the jet flow nozzle to form turbulent jet flow; under the suction of the turbulent jet flow, air in the environment can automatically enter the air suction chamber through the air suction hole and is brought into the air and liquid mixing chamber from the air suction chamber to perform energy transmission and mass transmission; the accelerated and compressed air is crushed into air bubbles by liquid drops in the diffusion foaming chamber; and the preliminarily foamed flow is fully foamed in the cyclone foaming chamber. The self-absorption air type cyclone foaming device is simple in structure, convenient to operate, high in foaming rate, low in energy consumption, safe, reliable and low in running and maintenance cost.
Owner:CHINA UNIV OF MINING & TECH

Accelerant for generating gas hydrate

The invention relates to a natural gas hydrate, and particularly to an accelerant for strengthening the generation of a gas hydrate. The accelerant for generating the gas hydrate, provided by the invention, is prepared by compounding of a novel anion gemini surfactant and solid activated carbon particles with a strong heat transmission effect at a certain mass ratio; a liquid mixture is formed after the high-speed mechanical agitation and the ultrasonic dispersion are conducted on the reagent, and the essence is that solid particles with a high heat-conducting property are wrapped in the gemini surfactant, so that nanometer solid particles cannot be agglomerated easily, and the mixing solution with uniformly dispersed solutes is formed, and the mixing solution is free of sediment; the application temperature ranges from 0 DEG C to 10 DEG C, the pressure ranges from 0 MPa to 12 MPa, and the time of hydrate generation induction period ranges from 1 min to 3 min; compared with the pure water system, the generation speed rate of the hydrate is increased by 140%-200%.
Owner:南通东湖国际商务服务有限公司

Optical communication device and quantum key distribution system using the same

An optical communication apparatus that can perform stable intensity and phase modulation on an optical pulse at high speed is provided, as well as a quantum key distribution system using the apparatus. Using multilevel signals for the electric signals (RF1, RF2) to be applied to two arms of a two-electrode Mach-Zehnder modulator, phase modulation is performed on an optical pulse in accordance with the average of the levels of the signals (RF1, RF2), and intensity modulation is performed on the optical pulse in accordance with the voltage difference between the signals (RF1, RF2), whereby stable high-speed multilevel modulation can be realized. The cryptographic key generation rate in a decoy quantum key distribution system is enhanced.
Owner:NEC CORP

Advanced oxidative coupling device and process for treating organic wastewater difficult to degrade

The invention discloses an advanced oxidative coupling device and process for treating organic wastewater difficult to degrade. A main device body comprises an ozone oxidation-multi-dimensional electro-catalysis / microelectrolysis area, an ozone oxidation-microelectrolysis / Fenton area, a coagulation area and an inclined plate sedimentation area, wherein the ozone oxidation-multi-dimensional electro-catalysis / microelectrolysis area comprises a multi-dimensional electrolysis / microelectrolysis area at the upper part and an ozone oxidation area at the lower part; the ozone oxidation-microelectrolysis / Fenton area comprises a microelectrolysis / Fenton area at the upper part and an ozone oxidation area at the lower part. The device combines four levels of advanced oxidation systems, and electrocatalytic oxidation, ozone oxidation, Fenton oxidation and a microelectrolysis reaction are mutually coupled in function, so that an organic matter difficult to degrade is subjected to multi-level oxidation to realize complete oxidative cracking; when the device is used for treating the organic wastewater difficult to degrade, the yield and the production rate of *OH are increased, the liquid phase transfer process is accelerated, the overall current efficiency of the device is increased, operation expenses are saved, flexible regulation and control of a process unit are realized, and the device can be used for treating various kinds of organic wastewater difficult to degrade.
Owner:AEROSPACE KAITIAN ENVIRONMENTAL TECH CO LTD +1

Method for preparing layered zeolite with MWW structure

The invention relates to a method for preparing a layered zeolite with MWW structure and aims to solve problems of severe toxicity and environmental pollution of a prior art using hexamethylene imines as a template. According to the invention, silicon source, aluminium source, template (T), alkali metal cation M, seed crystal and water are mixed into a mixture, wherein molar ratios of the mixture are as below: SiO2 / Al2O3 equals to 1-200; H2O / SiO2 equals to 5-500; OH<-> / SiO2 equals to 0.01-4; M<+> / SiO2 equals to 0.01-4; and T / SiO2 equals to 0.01-4; the mixture is crystallized for 1-400 h at 30-200 DEG C to obtain a crystallization product, which is the layered zeolite with MWW structure; and the template T is non-equivalence tetra-allkylammonium cation. The above technical scheme well solves the problems and can be applied to industrial production of layered zeolite with MWW structure.
Owner:CHINA PETROLEUM & CHEM CORP +1

Image processing method and electronic equipment

The invention discloses an image processing method and electronic equipment. The image processing method comprises the following steps: detecting a dynamic range of a current frame image after obtaining the current frame image of a target object by the electronic equipment; determining an image compensation direction according to the dynamic range of the current frame image; further adjusting an original exposure parameter according to the determined image compensation direction so as to obtain an adjusted exposure parameter; acquiring the image of the target object by utilizing the adjusted exposure parameter so as to obtain a new frame image; and synthesizing the new frame image and the obtained current frame image so as to obtain a high dynamic range image of the target object.
Owner:LENOVO (BEIJING) CO LTD

Production method for semiconductor device

A method for producing a semiconductor device includes an implantation step of performing proton implantation from a rear surface of a semiconductor substrate of a first conductivity type and a formation step of performing an annealing process for the semiconductor substrate in an annealing furnace to form a first semiconductor region of the first conductivity type which has a higher impurity concentration than the semiconductor substrate after the implantation step. In the formation step, the furnace is in a hydrogen atmosphere and the volume concentration of hydrogen is in the range of 6% to 30%. Therefore, it is possible to reduce crystal defects in the generation of donors by proton implantation. In addition, it is possible to improve the rate of change into a donor.
Owner:FUJI ELECTRIC CO LTD

Security data communication achieving method based on quantum key distribution

The invention discloses a security data communication achieving method based on quantum key distribution. In traditional data communication based on quasi single-photon source quantum key distribution, a large number of quantum bits will be consumed in the data reconciliation process, and quantum key distribution efficiency is low. According to the security data communication achieving method based on quantum key distribution, a new quantum security communication model is built, the data reconciliation process is omitted, original key error codes are equivalent to channel error codes, and data secrecy transmission is achieved by exchanging the encryption and decryption sequence and the channel coding frequency. Dolay coding with the high error correcting capability is adopted for channel coding, original keys are used for encrypting and decrypting the coded data in a one-time pad mode, Dolay decoding is carried out on the decrypted data with error codes, and verification is carried out in an experiment system. Research results show that the quantum key distribution process is simplified, the key security is enhanced, computing and communication resources are saved, the key generating rate is improved, and a new idea is provided for quantum key distribution.
Owner:PLA UNIV OF SCI & TECH

Field-like ecological cultivation farm and field-like ecological cultivation method

InactiveCN102334469AIn line with wild life habitsImprove disease resistanceAnimal husbandryDiseaseCentipede
A field-like ecological livestock farm comprises fences, wherein an open cultivation zone and an incubation zone are arranged inside the fences; in the open cultivation zone, cultivation ridges and bait cultivation ditches are arranged alternately; and the incubation zone is provided with a plurality of breeding jars. The cultivation ridges are higher than the ground plane, the cross section of each cultivation ridge is trapezoid, tiles or bricks are arranged at the tops of the cultivation ridges, and gaps are reserved among the tiles or bricks. The field-like ecological cultivation farm and a field-like ecological cultivation method have the following characteristics that; the cultivation method is based on the combination of main food comprising high protein foods and meat and complementary food comprising insects in the food chain such as earthworm, Tenebrio molitor L. and / or ground beeltle; the cultivation farm meets the field life habit of centipede, thus the disease resistance of centipede can be greatly increased and the growing and breeding speed of centipede can be accelerated; and the adult has good drug property, high efficacy, good quality and high market price.
Owner:周雄

Ultra-high-speed quantum random number generator and generation method based on laser phase fluctuation

The invention discloses an ultra-high-speed quantum random number generator based on laser phase fluctuation. The ultra-high-speed quantum random number generator comprises a laser light source, a double-beam interferometer, a phase control system, a photoelectric detector and an analog-digital converter, wherein optical radiation output by the laser light source is interfered through the double-beam interferometer, one interference light path is provided with a voltage-controlled phase shifter by the double-beam interferometer; the phase control system guarantees a phase difference between the two interference light paths is kept at a preset value through the regulation of the voltage-controlled phase shifter so as to realize a purpose that the phase fluctuation of the laser light source and the output light intensity of the interferometer correspond one by one; and the photoelectric detector and the analog-digital converter output the original data of a random number, and a final quantum random number is obtained after the original data is subjected to aftertreatment. The invention also discloses an ultra-high-speed quantum random number generation method based on the laser phase fluctuation. The ultra-high-speed quantum random number generator and generation method can greatly improve a random number generation rate.
Owner:INST OF ADVANCED TECH UNIV OF SCI & TECH OF CHINA

Bait for raising orius sauteri and method for group raising

The invention relates to a feeding bait and process for colonially feeding Orius sauteries, the bait is made through a mode that flour mites are inoculated on a vegetal mixed base and is cultured and propagated, the environmental conditions of the inoculation, the cultivation and the propagation are that the relative humidity is 65-75 percent, the temperature is 24-26 DEG C, and the bait is cultured under the above environmental conditions for 15-25 days. The feeding method comprises hatch, the raising of nymphs, and the transfer of last instar nymphs or imagoes, the environmental conditions of feeding are that the temperature is 17.5-27.5 DEG C, the relative humidity is 60-90 percent, the photoperiodicity of the nymphs is 14-16 Liter : 10-8 days, during the stage of feeding the nymphs, the Orius sauteries are fed for 9-20 days by using the bait, and the quantity supplied of the bait of each Orius sauteri is 0.2-0.5 gram. Using the invention to cultivate the sauteries, the period of the growing development is short, the livability is high, the operation is simple, the practicability is strong, and the production cost is low. The spread and exploitation of the invention is beneficial to the non-polluted prevention of pests and the food safety.
Owner:INST OF PLANT PROTECTION HENAN ACAD OF AGRI SCI

Method for preparing hydrated alumina

The invention discloses a method for preparing hydrated alumina. The method comprises the following process that: (1) bottom water is added into a neutralization reactor and is heated to 50-95 DEG C, an acid aluminium salt water solution is added at the same time so as to control the pH value between 2 and 4, and the pH value is stabilized for a while; (2) the acid aluminium salt water solution and alkali metal aluminate (or alkaline precipitator) solution to regulate the pH value between 6 and 8, and the pH value is stabilized for a while; the alkaline precipitator solution (or the alkaline precipitator solution) is added to regulate the pH value to be between 8.5 and 12, and the pH value is stabilized for a while; (4) the acid aluminium salt water solution is added to regulate the pH value to be between 2 and 4, and the pH value is stabilized for a while; (5) the alkaline precipitator solution or the alkaline precipitator solution is added to regulate the pH value to be between 8.5 and 12, and the pH value is stabilized for a while; the steps (4) and (5) are repeated for 1-4 times; (7) after gelatinizing is completed, aging, filtering, washing and drying are carried out to obtain the hydrated alumina; and the steps (1)-(3) are carried out under the action of ultrasonic waves, and the frequencies of the ultrasonic waves are10-80 kHZ. The hydrated alumina which is prepared through the method is distributed in a centralized manner and has high crystallinity and large pore volumes and pore diameters.
Owner:CHINA PETROLEUM & CHEM CORP +1

Preparation method for manganic manganous oxide

The invention relates to a preparation method for manganic manganous oxide. The method is as follows: in an enclosed reaction container, a manganese source with an average valence of manganese being less than 8 / 3 is placed in a reaction solution, the reaction is carried out with heating, the situation is kept that the pressure or partial pressure of oxidizing gases in the reaction system is more than or equal to 1 standard atmospheric pressure, and a crude product of manganic manganous oxide can be prepared after the reaction is completed. Optionally, the enclosed reaction container has an oxidizing gas inlet or has an oxidizing gas inlet and a generation gas outlet simultaneously. The oxidation reaction rate is raised, the oxidation reaction time is shortened, the manganic manganous oxide crystal growth integrality is raised, the crystal defect is reduced, and high purity and high quality are obtained.
Owner:INST OF PROCESS ENG CHINESE ACAD OF SCI

Preparation method and application of modified charcoal adsorbent based on lanthanum ferrite

The invention discloses a preparation method and application of a modified charcoal adsorbent based on lanthanum ferrite. The preparation method comprises the following steps: S1, preparing charcoal; S2, performing modification treatment; and S3, performing finished product treatment. According to the method, low-cost and sufficient-source crop straws are adopted as a raw material; by virtue of a chemical coprecipitation method, the surface of the charcoal obtained by pyrolysis of the straws is modified with the lanthanum ferrite, so that the modified charcoal adsorbent has a favorable removal effect on pollution by phosphate anions in a water body, especially low-concentration phosphorus; furthermore, the adsorbent is favorable and stable in magnetism and convenient to recycle; in addition, the preparation method is simple to operate and high in preparation yield, and has potential application prospect in the field of inorganic wastewater treatment.
Owner:JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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