Abstract: Disclosed are methods for improving compound detection and characterization. Methods for characterizing a sample are disclosed. The methods can include providing a sample to a liquid chromatography system capable of sample separation to generate sample components; analyzing sample components by multiplexed targeted selected ion monitoring (SIM) to generate an inclusion list; and performing iterative mass spectral data-dependent acquisition (DDA) from the inclusion list, to identify individual sample components thereby characterizing the sample. In one example, multiplexed targeted SIMs and iterative MS2 DDA acquisition is used to increase robust compound identification for cell culture medium analysis.

Abstract: The photovoltaic cell includes a silicon substrate, a first passivation layer, a second passivation layer, at least one silicon oxynitride layer, and at least one silicon nitride layer. The second passivation layer includes a first silicon oxide layer and at least one aluminum oxide layer, a ratio of the number of oxide atoms to the number of aluminum atoms in the at least one aluminum oxide layer is greater than 0.8 and less than 1.6. The number of silicon atoms is greater than the number of oxygen atoms in the at least one silicon oxynitride layer and the number of oxygen atoms is greater than the number of nitrogen atoms in the at least one silicon oxynitride layer. A ratio of the number of silicon atoms to the number of nitrogen atoms in the at least one silicon nitride layer is greater than 1 and less than 4.

Abstract: A method of a polyurethane foam includes the following steps of: (1) simultaneously pumping a mixed solution prepared from hydrogen peroxide, an organic acid, a catalyst and a stabilizer and a vegetable oil into a first microstructured reactor of a micro-channel modular reaction device for reacting to obtain a reaction solution containing epoxidized vegetable oil; (2) simultaneously pumping the reaction solution containing the epoxidized vegetable oil obtained from the step (1) and a compound of formula III into a second microstructured reactor of the micro-channel modular reaction device for reaction to obtain a vegetable oil polyol; and (3) reacting the vegetable oil polyol prepared from the step (2) with a foam stabilizer, a cyclohexylamine, an isocyanate and a foaming agent cyclopentane for foaming so as to prepare a rigid polyurethane foam.

Abstract: A preparation method of a flexible polyurethane foam includes the following steps of: (1) subjecting an epoxidized vegetable oil, a benzoylformic acid, a basic catalyst, and an inert solvent to a ring-opening reaction in a first microchannel reactor of a microchannel reaction device to obtain a vegetable oil polyol; (2) subjecting the vegetable oil polyol obtained in the step (1), a propylene oxide and an inert solvent to an addition polymerization reaction in a second microchannel reactor of the microchannel reaction device to obtain a vegetable oil polyol for flexible polyurethane foam; and (3) using the vegetable oil polyol for flexible polyurethane foam obtained in the step (2) as the unique polyol, and subjecting the same and an isocyanate polyol to a foaming reaction to obtain the flexible polyurethane foam.

Abstract: A self-cleaning and anti-adhesion apparatus for marine instruments includes an installation frame. A first end of the installation frame is fixed with an installation base, and a second end of the installation frame is movable with a screw rod. The upper end of the installation base is movable with a first rotation base. A wire netting ball used for holding a sensor is installed above the first rotation base. The wire netting ball is fixedly connected with the installation base. The top end of the screw rod is fixedly connected with a first end of the flexible connector, and a second end of the flexible connector is fixedly connected with a floating bladder. The screw rod is screwed with an inner wheel of an internal meshing ratchet mechanism, and an outer wheel of the internal meshing ratchet mechanism is fixed inside the mounting ring.

Abstract: A self-cleaning and anti-adhesion apparatus for marine instruments includes an installation frame. A first end of the installation frame is fixed with an installation base, and a second end of the installation frame is movable with a screw rod. The upper end of the installation base is movable with a first rotation base. A wire netting ball used for holding a sensor is installed above the first rotation base. The wire netting ball is fixedly connected with the installation base. The top end of the screw rod is fixedly connected with a first end of the flexible connector, and a second end of the flexible connector is fixedly connected with a floating bladder. The screw rod is screwed with an inner wheel of an internal meshing ratchet mechanism, and an outer wheel of the internal meshing ratchet mechanism is fixed inside the mounting ring.

Abstract: A grounding segment for a segmented grounding electric device, including a plurality of segment single bodies disposed in a matched manner, wherein a curved concave surface is formed in an outer side surface of each segment single body; a chute is formed in the curved concave surface; an interior of the chute is in sliding connection with an elastic member; two ends of the elastic member are respectively connected to sliders; the sliders are in sliding connection with the interior of the chute; each slider is movably connected to a curved fixing member matching a grounding conductor; the curved fixing member is made of a conductive material applicable to grounding conductors of different sizes; and a locking apparatus is connected between the plurality of segment single bodies. A user conveniently transports and mounts the grounding segment to reduce a land excavation area. Universality of the grounding segment is improved.

Abstract: A grounding segment for a segmented grounding electric device, including a plurality of segment single bodies disposed in a matched manner, wherein a curved concave surface is formed in an outer side surface of each segment single body; a chute is formed in the curved concave surface; an interior of the chute is in sliding connection with an elastic member; two ends of the elastic member are respectively connected to sliders; the sliders are in sliding connection with the interior of the chute; each slider is movably connected to a curved fixing member matching a grounding conductor; the curved fixing member is made of a conductive material applicable to grounding conductors of different sizes; and a locking apparatus is connected between the plurality of segment single bodies. A user conveniently transports and mounts the grounding segment to reduce a land excavation area. Universality of the grounding segment is improved.

Abstract: Disclosed are a multipath selection method and device, and a storage medium. The method includes that: a correlation sequence between a received signal and a local reference signal is acquired by means of a correlation calculation method; a power spectrum of the correlation sequence and an average noise power of the received signal are acquired; according to the average noise power of the received signal, the power spectrum of the correlation sequence is divided into at least one first multipath component area and a second multipath component area according to a pre-set dividing rule; the at least one first multipath component area is searched according to a pre-set first noise threshold, so as to acquire a valid multipath component signal in the at least one first multipath component area; and the second multipath component area is searched according to a pre-set second noise threshold, so as to acquire a valid multipath component signal in the second multipath component area.

Abstract: The present disclosure discloses a method and device for determining a position, and a computer storage medium. The method includes that a first power value for a SYNC-NL segment within a DwPTS, a second power value for a first GP segment which precedes the SYNC-NL segment, a third power value for a second GP segment which follows the SYNC-NL segment, and a fourth power value for a time slot 0 are acquired; an eigenvalue of the DwPTS is calculated according to the first power value, the second power value, the third power value and the fourth power value; and the position of the DwPTS is determined according to the eigenvalue.

Abstract: An MAP algorithm-based Turbo decoding method and apparatus. The method includes: iteratively estimating an information symbol by using an MAP algorithm, acquiring an ? and ? window boundary values of each sliding window by means of window boundary value inheritance, acquiring an ? block boundary value and ? block boundary value of each sub-block by means of block boundary value inheritance, and recursively calculating posterior probability Log Likelihood Ratio (LLR) values of a whole window and a whole block according to the ? boundary values and the ? boundary values (101); and performing decoding decision according to the LLR values (102).

Abstract: Disclosed are a multipath selection method and device, and a storage medium. The method includes that: a correlation sequence between a received signal and a local reference signal is acquired by means of a correlation calculation method; a power spectrum of the correlation sequence and an average noise power of the received signal are acquired; according to the average noise power of the received signal, the power spectrum of the correlation sequence is divided into at least one first multipath component area and a second multipath component area according to a pre-set dividing rule; the at least one first multipath component area is searched according to a pre-set first noise threshold, so as to acquire a valid multipath component signal in the at least one first multipath component area; and the second multipath component area is searched according to a pre-set second noise threshold, so as to acquire a valid multipath component signal in the second multipath component area.

Abstract: Disclosed is an MAP algorithm-based Turbo decoding method and apparatus. The method includes: iteratively estimating an information symbol by using an MAP algorithm, acquiring an ? and ? window boundary values of each sliding window by means of window boundary value inheritance, acquiring an ? block boundary value and ? block boundary value of each sub-block by means of block boundary value inheritance, and recursively calculating posterior probability Log Likelihood Ratio (LLR) values of a whole window and a whole block according to the ? boundary values and the ? boundary values (101); and performing decoding decision according to the LLR values (102).

Abstract: Disclosed are a signal gain control method and device for a TD-HSPA+ terminal device. The method comprises the following steps: when a terminal device is in a continuous packet transmission mode, it is determined whether the terminal device receives a signal from a high speed packet channel for the first time, and if not, it is determined whether a reception interval between two successively received signals is smaller than a preset interval; if the reception interval is not smaller than the preset interval, a gain AGCPCCPCH at a main frequency point of a primary common control physical channel (PCCPCH) of a cell is obtained, and the AGCPCCPCH is used to control a gain of a signal currently received by the terminal device.

Abstract: The present disclosure discloses a method and device for determining a position, and a computer storage medium. The method includes that a first power value for a SYNC-NL segment within a DwPTS, a second power value for a first GP segment which precedes the SYNC-NL segment, a third power value for a second GP segment which follows the SYNC-NL segment, and a fourth power value for a time slot 0 are acquired; an eigenvalue of the DwPTS is calculated according to the first power value, the second power value, the third power value and the fourth power value; and the position of the DwPTS is determined according to the eigenvalue.

Abstract: Disclosed are a signal gain control method and device for a TD-HSPA+ terminal device. The method comprises the following steps: when a terminal device is in a continuous packet transmission mode, it is determined whether the terminal device receives a signal from a high speed packet channel for the first time, and if not, it is determined whether a reception interval between two successively received signals is smaller than a preset interval; if the reception interval is not smaller than the preset interval, a gain AGCPCCPCH at a main frequency point of a primary common control physical channel (PCCPCH) of a cell is obtained, and the AGCPCCPCH is used to control a gain of a signal currently received by the terminal device.

Abstract: The present invention discloses a multi-frame synchronization method, the method comprises: for each received sub-frame, a receiver determining a probability that the received sub-frame is each of sub-frames in a multi-frame, a sub-frame with maximum probability being a state of the currently received sub-frame after N sub-frames are received. The present invention further discloses a receiving apparatus for multi-frame synchronization comprising a calculation module; wherein the calculation module is configured to calculate a probability that a received sub-frame is each of sub-frames in a multi-frame, and determine a state of the currently received sub-frame based on a sub-frame with maximum probability after N sub-frames are received. The present invention effectively achieves a position for multi-frame synchronization and low calculation complexity.

Abstract: The invention provides a method and an apparatus for estimating frequency deviation, the method comprising: after receiving a sub-frame, transforming a downlink synchronized code of the sub-frame to a frequency domain, and performing a correlation operation between the transformed downlink synchronized code and a local frequency domain synchronized code to obtain a conjugate downlink synchronized code sequence; judging a location of a maximum value in the conjugate downlink synchronized code sequence, and calculating a frequency deviation value according to the location of the maximum value. The estimating method provided in the invention can realize a stable work with no need of a precise sampling value location, an accurate timing synchronization, or even obtaining the information for the multi-path distribution and locations.