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1069results 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

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

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

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

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

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

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

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
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