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Now showing items 1 - 16 of 10669

  • The Structure of the Kac–WangYan Algebra

    Linshaw   Andrew R.  

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  • METHOD FOR SEPARATING UNDERGROUND OIL, GAS, WATER AND SAND AND SEPARATOR

    A method for separating underground oil, gas, water and sand and a separator (10), the method for separating underground oil, gas, water and sand comprising the following steps: step 1: forming a plurality of spaces by partitioning in the outflow direction of extracted liquid in an oil sleeve annulus, and providing an accommodating cavity communicating with the oil sleeve annulus in each space (21); step 2: forming a plurality of liquid inlet hole sets (11) on a drainpipe (1) of the extracted liquid along the outflow direction of the extracted liquid, each liquid inlet hole set (11) correspondingly communicating with an accommodating cavity (21); and step 3: separating oil, gas and water after crude oil in the oil sleeve annulus flows into each accommodating cavity (21), separated oil drops or gas bubbles flowing back to the oil sleeve annulus from the accommodating cavities (21), and the separated extracted liquid simultaneously flowing into the drainpipe (1) from the plurality of liquid inlet hole sets (11). With the method for separating underground oil, gas, water and sand and the separator, rapid separation of oil and water or gas and water in high water content crude oil underground may be achieved.
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  • CRADLE HEAD-BASED MOUNTING STATE CONTROL METHOD, AND AERIAL VEHICLE

    A cradle head (20)-based mounting state control method for an aerial vehicle (100), and the aerial vehicle (100). The aerial vehicle (100) comprises a first accelerometer (10). The cradle head (20) comprising a second accelerometer (22). The control method comprises the steps of: (S2) obtaining a first gravitational acceleration of an aerial vehicle (100) by means of a first accelerometer (10); (S4) obtaining a second gravitational acceleration of a cradle head (20) by means of a second accelerometer (22); and (S6) determining the mounting state of the cradle head (20) according to the first gravitational acceleration and the second gravitational acceleration.
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  • PROTEIN PRODUCTS, ESPECIALLY PEANUT MILK AND METHODS FOR MAKING THE SAME

    According to one embodiment, a protein product may include a mixture of water and particulate matter comprising protein. The mixture may include medium chain aldehydes and pyrazines. The ratio of a total concentration of medium chain aldehydes in the mixture to a total concentration of pyrazines in the mixture, as determined by gas chromatography-mass spectrometry, may be greater than or equal to 0.5 and less than or equal to 45. The mixture may also include from about 0.5 wt.% to about 8.0 wt.% total protein by weight of the mixture. In addition, the mixture may include from about 40 wt.% to about 98 wt.% water by weight of the mixture and less than or equal to about 4.0 wt.% oil and fat by weight of the mixture. The particulate matter may have an average particle size less than or equal to about 50 f.lm. Most preferably, the protein product is prepared from peanuts, which are dry heated at 114-154°C for 10-120min in order to reduce medium chain aldehydes giving green, beany flavour and not to increase pyrazine content too much which would result in a strong, burnt flavour. Subsequently, the peanuts are ground to particles sizes less or equal to 50 mym. Fat is separated (separator). Homogenisation is carried out at elevated temperatures. Indirect sterilisation is carried out since this results in favourable protein aggregate formation giving higher viscosity (in comparison to direct heating with e.g. steam).
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  • DATA TRANSMISSION METHOD FOR EDGE MBMS SERVICE AND RELEVANT DEVICE

    Disclosed are a data transmission method for an edge MBMS service and a relevant device. The method is applicable to a data transmission system of an MBMS service, the system comprising a central BM-SC located in a core network and an edge BM-SC located at the edge of the network and an MBMS GW. The method comprises: a central BM-SC creating a control plane bearer context; the central BM-SC sending a session start request to an edge BM-SC, so that the edge BM-SC creates a user plane bearer context; the central BM-SC receiving a session start response sent by the edge BM-SC; and the central BM-SC issuing a service key to the edge BM-SC, so that the edge BM-SC encrypts data of an edge MBMS service using the service key and sends the data to a UE via an MBMS GW. The present invention can reduce a data transmission time delay of an edge MBMS service, and reduces the use of a core network bandwidth for the data transmission of the edge MBMS service.
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  • METHOD AND APPARATUS OF PROMPTING AN UPDATE OF AN APPLICATION

    The present disclosure provides a method and apparatus of updating an application. The method includes: calculating an error probability of a designated application when running under one or more designated conditions in an event that the application includes updateable content, the one or more designated conditions including an attribute and/or a runtime environment of the application; and pushing an update prompt of the application to a terminal device that satisfies the one or more designated conditions in response to the error probability satisfying a preset condition.
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  • JITTER CIRCUIT USED IN HIGH-PRECISION ANALOGUE-TO-DIGITAL CONVERTER

    A jitter circuit used in a high-precision analogue-to-digital converter, comprising: a settable pseudo random sequence generator (1) for generating a pseudo random sequence signal which is uncorrelated to an analogue input signal Vi and is settable, wherein an n-bit signal therein is used as a digital jitter signal; a trimming module (2) for accurately positioning a trimming signal which controls a trimmable DAC circuit (3), so as to calibrate the trimmable DAC circuit (3); the trimmable DAC circuit (3) which is controlled by the trimming signal to convert the received digital jitter signal into an analogue jitter signal; a jitter signal introducing circuit (4) for receiving the analogue jitter signal and the analogue input signal Vi, outputting an analogue signal after processing, and introducing an input of an analogue-to-digital converter (10); and a jitter signal removing circuit (5) for receiving the digital jitter signal, and removing the jitter signal from an output of the analogue-to-digital converter to obtain a final data output result DOUT. The present invention effectively reduces the complexity of a high-precision ADC converter system, and is applicable in the high-precision ADC converter for improving the dynamic nonlinearity thereof.
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  • DUAL-POLARIZED WAVEGUIDE ARRAY ANTENNA SHARED BY TRANSMITTING AND RECEIVING

    The present invention relates to the field of communication and measurement and control, in particular to a dual-polarized waveguide array antenna shared by transmitting and receiving, comprising N broadband dual-polarized antenna sub-arrays and a polarization adjustment apparatus. Each of the broadband dual-polarized antenna sub-arrays comprises a dual-polarized open-ended waveguide array radiation layer and a network feed layer. The dual-polarized open-ended waveguide array radiation layer is provided above the network feed layer. The polarization adjustment apparatus is provided below the network feed layer. The present invention uses a waveguide network structure to feed a plate satellite antenna, expanding an operation bandwidth of the plate satellite antenna, realizing sharing an antenna aperture by transmitting and receiving, reducing a radiation grating lobe, and providing an interface for the automatic adjustment in the electromagnetic wave polarization direction.
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  • CONVERTER VALVE TOWER AND VALVE HALL USING CONVERTER VALVE TOWER

    A converter valve tower and a valve hall using the converter valve tower. The converter valve tower comprises two columns of converter valve components (22) disposed at intervals; a maintenance platform (21) is disposed between the two columns of converter valve components (22); more than two converter valve components are provided in each column of converter valve components and are layered from top to bottom; the two columns of converter valve components are staggered. Because the two columns of converter valve components are staggered, an installation and maintenance space of each converter valve component can be increased; in on-site installation and maintenance, work personnel can stand on the maintenance platform, and change work positions at will to select a comfortable work position, thereby conveniently maintaining any converter valve component, substantially improving installation and maintenance efficiency and solving the problem that maintenance of an existing converter valve tower is inconvenient.
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  • TESTING SYSTEM OF GIS ELECTRONIC MUTUAL INDUCTOR AND METHOD THEREFOR

    A testing system of a GIS electronic mutual inductor for opening/closing a capacitive low current based on an isolating switch. The testing system comprises a high-voltage testing transformer connected to one BSG bushing, a capacitor voltage divider, a load capacitor positioned on the other BSG bushing, and an isolating switch positioned between the two bushings. A one-time transient testing system and an electronic mutual inductor to be tested are calibrated, the electronic mutual inductor to be tested is connected to one end of a two-time converter, a merging unit is connected to the other end thereof, and a fault recorder is connected to the other end of the merging unit. A voltage value and a current value of a high-voltage bus are tested when the isolating switch is opened/closed, thereby being compared with the output of the electronic mutual inductor to be tested. By means of the testing system, the electromagnetic environments with voltage levels of 110KV, 220KV and 500KV in the processes of power transmission and powering off can be simulated, and the process of opening/closing an empty conductor and a capacitive low current load by the isolating switch on site can be simulated, thereby generating transient strong interference similar to that on site so as to check the electromagnetic protection performance of the electronic mutual inductor under these conditions.
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  • ADJUSTMENT METHOD, SYSTEM AND DEVICE FOR GIMBAL PLATFORM AND GIMBAL PLATFORM

    Disclosed are an adjustment method, system and device for a gimbal platform and a gimbal platform, wherein the gimbal platform is provided with a camera device (12) and comprises at least one drive electric motor (1, 9, 10, 18). The gimbal platform adjustment method comprises the steps of: obtaining torque information about at least one drive electric motor (S101); determining offset information about the centre of gravity of the camera device with respect to a motor shaft of at least one drive electric motor according to the torque information and pre-set gravity information about the camera device (S102); and automatically adjusting the centre of gravity of the gimbal platform according to the offset information (S103). With the gimbal platform adjustment method, the gimbal platform adjustment device, the gimbal platform and an unmanned aerial vehicle, the problems of difficulty in adjusting the gimbal platform for a user not inputting, and the effect on the stability and reliability of the use of the gimbal platform caused by the accuracy of an obtained offset and offset direction owing to human error are overcome, thereby ensuring the accuracy and reliability of the adjustment of the gimbal platform, and also improving the stability and reliability of the use of the gimbal platform.
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  • METHOD AND DEVICE FOR ACQUIRING CONTEXT INFORMATION ABOUT USER EQUIPMENT

    Provided are a method and device for acquiring context information about a user equipment. The method comprises: receiving, by a first network-side device, a measurement report sent by a user equipment; according to the measurement report and a first neighbour cell configuration relationship, determining a handover target cell and an alternative cell; and respectively sending context information about the user equipment to a second network-side device to which the handover target cell belongs and a third network-side device to which the alternative cell belongs, the context information being used for re-establishing a radio resource control (RRC) connection between the user equipment and the second network-side device or the third network-side device when handover fails. The embodiments of the present application increase the probability that the user equipment is re-established in a cell having context information when the RRC connection is re-established, thereby being beneficial to the quick recovery of services.
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  • FREQUENCY-MODULATED RECEIVING CIRCUIT, LAMP AND AUDIO PLAYBACK METHOD THEREOF

    Disclosed are a frequency-modulated receiving circuit, a lamp, and an audio playback method thereof. The frequency-modulated receiving circuit comprises: a frequency-modulated receiving antenna used for receiving a frequency-modulated signal; a frequency-modulated receiving chip electrically connected to the frequency-modulated receiving antenna; a receiving microprocessor electrically connected to the frequency-modulated receiving chip; a received frequency coding switch used for adjusting a received frequency point and electrically connected to the receiving microprocessor; an amplifier electrically connected to the frequency-modulated receiving chip; and a loudspeaker electrically connected to the amplifier. The present invention has the following beneficial effects: by configuring different frequency points for frequency-modulated reception of external audio signals, not only anti-interference capability of a remote control technology is improved, but also communication reliability of smart home is improved; and by configuring a plurality of loudspeaker nodes or lamps and achieving a music networking function between the plurality of nodes or lamps, people's life experience is improved and smart home control functions are enriched.
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  • Minimum codegree condition for perfect matchings in k-partite k-graphs

    Lu, Hongliang   Wang, Yan   Yu, Xingxing  

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  • A Fractal Model of Acoustic Emission Signals in Sliding Friction

    Hao, Qiushi   Shen, Yi   Wang, Yan   Zhang, Xin  

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  • Microbial diversity in the sediments of the southern Mariana Trench

    Li, Yingjie   Cao, Wenrui   Wang, Yan   Ma, Qingjun  

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