CHEST AND ABDOMEN COUPLED CARDIOPULMONARY RESUSCITATION DEVICE

    公开(公告)号:US20230285229A1

    公开(公告)日:2023-09-14

    申请号:US18025517

    申请日:2022-05-11

    CPC classification number: A61H31/006 A61H31/005 A61H2201/5071

    Abstract: A chest and abdomen coupled cardiopulmonary resuscitation device, including a bottom plate and at least two compression/traction mechanisms, wherein each of the two compression/traction mechanisms includes two linear motors with opposite positions, the axes of the two linear motors are perpendicular to the bottom plate, and the bottoms of the linear motors are in slip connection with the bottom plate; and the tops of the two linear motors are fixedly connected by a connecting mechanism, the bottom of the connecting mechanism is fixedly provided with a presser connected to an air pump, and the presser can move on the connecting mechanism along a direction perpendicular to the sliding direction of the linear motors. The device can be adjusted to the optimal compression frequency, depth and duration according to objective physiological indicators, thereby greatly improving success rate of rescue.

    METHOD FOR MANAGING VEHICLE-MOUNTED POWER BATTERY BASED ON STOCHASTIC THEORY

    公开(公告)号:US20250164565A1

    公开(公告)日:2025-05-22

    申请号:US19033521

    申请日:2025-01-22

    Abstract: The present invention discloses a method for managing vehicle-mounted power battery based on stochastic theory, comprising: current source applies current excitation signal to power battery mounted on vehicle by control of BMS, and obtaining voltage measurement signal of the power battery; reconstructing voltage response signal that can effectively restore true voltage of the power battery by processing input and output signals of power battery; obtaining battery model parameters based on reconstructed voltage response signal and current excitation signal; estimating physical parameter values of internal state of power battery based on extended Kalman filter, unscented Kalman filter and like; charging the power battery timely, checking and maintaining the power battery, or replacing the power battery by comparing estimated physical parameter values of internal states with corresponding threshold values.

    CARBONYL REDUCTASE MUTANT AND ITS APPLICATION

    公开(公告)号:US20250145970A1

    公开(公告)日:2025-05-08

    申请号:US18933327

    申请日:2024-10-31

    Abstract: The present disclosure relates to the technical field of biotechnology, in particular to carbonyl reductase mutant and its application. Specifically, the present disclosure provides a carbonyl reductase mutant for catalyzing the preparation of (R)-8-chloro-6-hydroxyoctanoic acid ethyl ester from 8-chloro-6-oxooctanoic acid ethyl ester. The mutant protein is a non natural protein and undergoes mutations in three core amino acids related to enzyme catalytic activity in the initial carbonyl reductase. The advantageous effect of the present disclosure is that the carbonyl reductase mutant provided by the present disclosure has the characteristic of efficiently catalyzing the preparation of the precursor substance (R)-8-chloro-6-hydroxyoctanoic acid from 8-chloro-6-oxooctanoic acid ethyl ester, and can efficiently catalyze the oxidation-reduction reaction of 8-chloro-6-oxooctanoic acid, with a product space-time yield of 99.9 g·L−1·h−1 or more.

    Method and system for generating logarithmic non-uniform pseudo-random electromagnetic exploration signal

    公开(公告)号:US12282133B2

    公开(公告)日:2025-04-22

    申请号:US17603442

    申请日:2021-03-30

    Abstract: A method and system for generating a logarithmic non-uniform pseudo-random electromagnetic exploration signal including: constructing two or more basic unit signals, according to an exploration requirement, that are stairstep signals obtained by superposing in-phase periodic square wave signals, a frequency ratio between adjacent periodic square wave signals is 2, and the two or more basic unit signals meet the following requirement: if a lowest dominant frequency in a first basic unit signal is a fundamental frequency, lowest frequencies of the remaining basic unit signal are l×2m times the fundamental frequency, where l is an odd number except 1, and m is a natural number; and superposing the two or more basic unit signals to obtain a logarithmic non-uniform 2n sequence pseudo-random signal. A logarithmic non-uniform 2n sequence stairstep signal is constructed within a limited frequency interval, and requirements of prospectors for a higher frequency density within a specific frequency interval are met.

    Method and system of self-adaptive setting of closed-loop parameters for suppressing photovoltaic coupling harmonics

    公开(公告)号:US12278492B1

    公开(公告)日:2025-04-15

    申请号:US18982070

    申请日:2024-12-16

    Abstract: The present invention provides a method and system of self-adaptive setting of closed-loop parameters for suppressing PV coupling harmonics, comprising: acquiring node voltages and node currents of PV grid-connected inverters; constructing harmonic coupling admittance matrix according to the node voltages and node currents; calculating an amplitude of each element in the constructed harmonic coupling admittance matrix; screening contribution sources of coupling harmonics according to the calculated amplitude of the each element; evaluating quantitatively harmonic admittance of the PV grid-connected inverter according to screened contribution sources; and, carrying out optimization iteration for double-closed-loop PI control parameters of inverter with objective of minimizing the coupling harmonics of the PV grid-connected inverter according to results of the quantitative evaluation of the harmonic admittance, to complete self-adaptive setting of closed-loop parameters for suppressing PV coupling harmonics.

    Intracellular radiation microdosimetric detection structure and detection method

    公开(公告)号:US12264310B1

    公开(公告)日:2025-04-01

    申请号:US18950326

    申请日:2024-11-18

    Abstract: The present invention provides an intracellular radiation microdosimetric detection structure and detection method, and relates to the field of radiation microdosimetric detection technologies. The detection structure includes a first semiconductor detector unit, a first pixel array detector, a cellular microfluidic chip, a second pixel array detector, and a second semiconductor detector unit that are sequentially arranged in layers. The cellular microfluidic chip is configured for cell fixation and culture. The first semiconductor detector unit and the second semiconductor detector unit form a charged particle energy information detector combination for detecting deposit energy of charged particles in a semiconductor detector. The first pixel array detector and the second pixel array detector form a charged particle flux and position information detector combination for measuring a flux and an angle of charged particles incident at a position of the cellular microfluidic chip.

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