5 results about "Total count" patented technology

The present disclosure relates to a staining reagent combination comprising a reagent A and a reagent B. The staining reagent combination is capable of simultaneously assessing total count of WBC, differential count of WBC and haemoglobin concentration from a biological sample in suspension form. The staining reagent combination is ideal for use in microfluidic platforms due to its high viscosity and lower volume required for measurement. The staining reagent combination is economical, non-toxic, has quick reaction and long working time.

The application relates to a method for electron microscopic analysis of helium element distribution with nanoscale resolution, and belongs to the technical field of transmission electron microscope microscopic analysis. The method for electron microscopic analysis of helium element distribution with nanoscale resolution comprises the following steps: pixel point scanning and collection are performed on a region where helium bubbles of a sample to be measured are located, so that an electron energy loss spectrum is obtained; an electron energy loss spectrum data set is obtained; background deduction is performed on the electron energy loss spectrum data set, so that a helium characteristic peak signal spectrum line data set is obtained; a distribution image of helium elements is obtained according to total count intensities of helium characteristic peak signals of data points in the helium characteristic peak signal spectrum line data set; and a distribution image of helium atom density is obtained according to count intensities of data points in the helium characteristic peak signal spectrum line data set within a preset energy range. The analysis method provided by the application can not only realize microscopic analysis of the nanoscale resolution distribution of helium elements in materials, but also can distinguish the distribution difference of helium atom density in different regions.

The application provides a dynamic PSD threshold correction method, device and equipment suitable for digital pulse waveform discrimination, and relates to the technical field of nuclear radiation detection. The method comprises the following steps: obtaining a current PSD-energy two-dimensional spectrum by using a nuclear radiation detection instrument, eliminating counts in a target energy range in the current PSD-energy two-dimensional spectrum, and converting the current PSD-energy two-dimensional spectrum into a one-dimensional PSD spectrum by using a preset formula; determining the position of the maximum peak and the half-height width in the one-dimensional PSD spectrum, determining a PSD threshold, and resetting a target PSD value range according to the PSD threshold; obtaining a target PSD-energy two-dimensional spectrum again, counting a discrimination target ray count value and a total count value, determining a main target ray count value according to the difference between the total count value and the discrimination target ray count value, and determining a main target ray count rate and a discrimination target ray count rate. By periodically and automatically analyzing the PSD-energy two-dimensional spectrum and dynamically adjusting the PSD threshold, the application can more accurately discriminate different particles, and improves the accuracy and efficiency of particle detection.

This invention discloses an adaptive energy calibration method for a Timepix3 detector, belonging to the field of plasma diagnostics. The method includes: acquiring photon events through the detector, where each photon event includes arrival time, coordinates, and energy information; sorting the photon events according to their arrival time to obtain a sequence; mapping the sequence to an empty matrix using a sliding time window method, searching and recording the area and total count of pixel clusters, and then compensating the count value according to a set threshold; classifying pixel clusters by area, summing the count values ​​of each pixel within a cluster to obtain the pixel cluster volume, and plotting a statistical histogram of the pixel cluster volume to form an energy spectrum; identifying energy peaks in each energy spectrum and performing Gaussian fitting, calculating the peak abscissa, and establishing the relationship between pixel cluster volume and actual energy; and completing energy calibration by linearly fitting multiple sets of pixel cluster volume and energy data. This invention reduces the requirements for setting parameters such as radiation source intensity, detector threshold, and exposure time.

The invention relates to a low-altitude unmanned aerial vehicle litchi tracking counting method, device and equipment and a medium, and the method comprises the steps: employing a preset enhanced intersection-to-union ratio calculation formula to calculate and determine an enhanced intersection-to-union ratio between a prediction frame and a real frame of a target litchi according to a preset center point Euclidean distance item and an aspect difference item, associating the enhanced intersection-parallel ratio with the fused motion state vector to determine associated data of the target litchi; calling a preset central area detection counting algorithm based on a time threshold value, judging whether the central point of the prediction frame of the target litchi in the associated data is located in a counting area delineated by the first preset coordinate and the second preset coordinate, and synchronously recording the number of staying frames of the target litchi in the counting area, and if the number of the staying frames reaches a preset frame number threshold value, counting the target litchis into a total counting result. According to the invention, frequent ID hopping in a counting task in a low-altitude unmanned aerial vehicle scene can be overcome, and error accumulation of a tracking task is reduced.