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50 results about "P component" patented technology

CRDS principle-based gas concentration measurement system of continuously adjustable laser light source

The present invention relates to a CRDS principle-based gas concentration measurement system of a continuously adjustable laser light source. The CRDS principle-based gas concentration measurement system comprises light path portion devices and electric circuit portion devices, wherein the light path portion devices comprise a laser, a light isolator, a light collimator, a wavemeter, and an optical passive cavity, and the electric circuit portion devices comprise a photoelectric detector, a control circuit, a PZT cavity length modulator, a high-speed data acquisition card and a computer. According to the present invention, the light in the one polarization direction is only utilized to detect, the connection with the light collimator adopts the polarization maintaining optical fiber connection, the light isolator in the system is eliminated, and the good polarization laser light beam can be obtained; the problem that the S component and the P component have different resonance frequencies in the annular cavity so as not to achieve the concurrent resonance is solved; a lot of the devices having the polarization beam splitting adjusting function are simplified and eliminated, and the light energy utilization rate of the laser is improved; and the on/off function of the laser is achieved through the current tuning so as to eliminate the AOM and the related control systems.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI

High-toughness and high-weather-resistance steel and manufacturing method thereof

The invention discloses high-toughness and high-weather-resistance steel and a manufacturing method thereof. The high-toughness and high-weather-resistance steel comprises the following components in percentage by weight: 0.035-0.075% of C, no more than 0.30% of Si, 0.40-0.80% of Mn, 0.07-0.11% of P, no more than 0.004% of S, 0.20-0.50% of Cu, 0.10-0.40% of Ni, 0.40-0.70% of Cr, 0.008-0.016% of Ti, 0.010-0.030% of Nb, no more than 0.0050% of N, 0.001%-0. 004% of Ca, and the balance of Fe and unavoidable impurities, wherein by taking a C-Mn-P component system with low C, low Mn and high P as a foundation and through the alloying of Cu, Ni and Cr, [%C]/[%P] is controlled to be not smaller than 0.49, [%Mn]/[%C] is controlled to be not smaller than 10, the weather resistance index DNH is controlled to be not smaller than 6.50%, [%C]*([%P]+2.5[%S]) is controlled to be not more than 0.0025, [%Ca]/[%S] is controlled to be equal to 1.0-3.0, ([%Cu]+0.36[%Ni]+0.27[%Cr])*[%P] is controlled to be not smaller than 0.030, [%Ca]*[%S]0.28 is controlled to be not more than 0.002, and a TMCP (ThermoMechanical Control Process) is adopted. Therefore, the high-toughness and high-weather-resistance steel has excellent low-temperature toughness, bending cold machining characteristic and high weather resistance, and is suitable to be used as a compartment body structure of a coating-free high-speed train.
Owner:BAOSHAN IRON & STEEL CO LTD

Hot-rolled dual-phase steel for automobile wheel and production method of hot-rolled dual-phase steel

InactiveCN107746931AThin gaugeSolve Surface Quality IssuesContinuous rollingCooling temperature
The invention discloses hot-rolled dual-phase steel for an automobile wheel and a production method of the hot-rolled dual-phase steel, and belongs to the technical field of dual-phase steel. The technical problems that in the prior art, the cost of hot-rolled dual-phase steel is high, accurate control over the cooling process cannot be achieved through an existing hot continuous rolling production method, and good surface quality cannot be guaranteed are solved. The hot-rolled dual-phase steel for the automobile wheel comprises, by mass percent, 0.05%-0.10% of C, 0.10%-0.25% of Si, 1.20%-1.40% of Mn, 0.50%-0.60% of Cr, 0.035%-0.070% of P, not larger than 0.010% of S and the balance Fe and inevitable impurities. According to the hot-rolled dual-phase steel, a low-silicon molybdenum-free Mn-Cr-P component system is adopted, and the surface quality problem brought by high silicon is solved; through control over the primary cooling temperature, the air cooling time and the secondary cooling speed and temperature, accurate control over the yield strength, the tensile strength and the dual-phase structure of the steel is achieved; and the hot-rolled dual-phase steel is low in cost and excellent in performance and surface quality.
Owner:PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP

Noninvasive apparatus and method for estimating blood pressure

Methods and apparatus for noninvasively estimating a blood pressure are provided. A pulmonic (P) component extracted from a second heart sound (S2) signal is analyzed to obtain a number of oscillations in the P component. A predetermined relationship between the number of oscillations and PAP is used to generate a blood pressure estimate. A PCG sensor including a mechanical filter for receiving heart sounds from a chest wall is also provided. The pressure of the PCG sensor on the chest wall is adjustable.
Owner:LONGHINI LUCA

A kind of high toughness, high weather resistance steel and its manufacturing method

The invention discloses high-toughness and high-weather-resistance steel and a manufacturing method thereof. The high-toughness and high-weather-resistance steel comprises the following components in percentage by weight: 0.035-0.075% of C, no more than 0.30% of Si, 0.40-0.80% of Mn, 0.07-0.11% of P, no more than 0.004% of S, 0.20-0.50% of Cu, 0.10-0.40% of Ni, 0.40-0.70% of Cr, 0.008-0.016% of Ti, 0.010-0.030% of Nb, no more than 0.0050% of N, 0.001%-0. 004% of Ca, and the balance of Fe and unavoidable impurities, wherein by taking a C-Mn-P component system with low C, low Mn and high P as a foundation and through the alloying of Cu, Ni and Cr, [%C] / [%P] is controlled to be not smaller than 0.49, [%Mn] / [%C] is controlled to be not smaller than 10, the weather resistance index DNH is controlled to be not smaller than 6.50%, [%C]*([%P]+2.5[%S]) is controlled to be not more than 0.0025, [%Ca] / [%S] is controlled to be equal to 1.0-3.0, ([%Cu]+0.36[%Ni]+0.27[%Cr])*[%P] is controlled to be not smaller than 0.030, [%Ca]*[%S]0.28 is controlled to be not more than 0.002, and a TMCP (ThermoMechanical Control Process) is adopted. Therefore, the high-toughness and high-weather-resistance steel has excellent low-temperature toughness, bending cold machining characteristic and high weather resistance, and is suitable to be used as a compartment body structure of a coating-free high-speed train.
Owner:BAOSHAN IRON & STEEL CO LTD

Method for processing heterodyne detection phase compensation after continuous variable quantum key distribution

The invention discloses a method for heterodyne detection phase compensation through post processing in continuous variable quantum key distribution. The method comprises the following steps: 1) a receiving end Bob receives a quantum state prepared by a sender Alice, and partitioning data obtained through heterodyne detection into blocks according to a set proportion; 2) the Bob sends phase compensation data to the Alice; 3) according to compensation data of two neighboring phases and corresponding sending data recorded when the Alice performs quantum state preparation, the Alice calculates phase drift of an X component and phase drift of a P component of the compensation data of the two neighboring phases; 4) according to the phase drift of the compensation data of the two neighboring phases, the Alice calculates phase drift phi of the X component and phase drift theta of the P component of to-be-compensated data among the corresponding sending data recorded when quantum state preparation is executed; 5) the Alice performs phase rotation for the X component and the P component of the to-be-compensated data according to the phase drift phi and the phase drift theta, and obtains thedata subjected to phase compensation.
Owner:PEKING UNIV

The invention discloses an eElectromagnetic compatibility modeling method and device for an object

The invention provides an electromagnetic compatibility modeling method and device for an object. The method comprises the following steps: decomposing a to-be-modeled object into an electrical connection and P component units; C; converting each component unit from a body structure to a surface structure consisting of a thickness-free surface, wherein the converted component unit is used as a target component unit; D; determining at least one target unit plane corresponding to each target component unit, and constructing a component model of each component through the at least one target unitplane corresponding to each target component unit; C; constructing an equivalent circuit model of the electrical connection as a model of the electrical connection; A; and the component models of allthe component units and the electrically connected model are combined, and the combined model serves as an electromagnetic compatibility simulation model of the to-be-modeled object. According to theelectromagnetic compatibility modeling method and device for the object, t, the accuracy of simulation calculation can be ensured, t, the simulation calculation efficiency can be improved, t, the modeling process is easy to execute, operability is high, and the electromagnetic compatibility modeling method and device are suitable for practical engineering application.
Owner:BEIJING JINGWEI HIRAIN TECH CO INC

Behavior recognition method and system based on middle-level features

The invention discloses a behavior recognition method and system based on middle-level features. The realization of the method comprises: obtaining a candidate component detector set from a sample image sequence; removing component detectors which are b% of the candidate component detector set and have low discrimination capacities, and obtaining a new candidate component detector set; carrying out sorting in a descending order according to weights of all the component detectors in the new candidate component detector set, and selecting the P component detectors at the front of sorting as middle-level feature extractors of a Class-A behavior class; acquiring middle-level feature extractors of all classes in behavior classes, combining the same into a bag of words (BOW), utilizing the bag of words to extract the sample middle-level features of the sample image sequence, utilizing the sample middle-level features to train a classifier, and obtaining a behavior recognition classifier; and inputting a test image sequence to the behavior recognition classifier, and obtaining the behavior class of the test image sequence. According to the method and system, the recognition capacity is high, the recognition accuracy rate is high, the practicability is high, and the correlation between components is retained.
Owner:HUAZHONG UNIV OF SCI & TECH
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