8 results about "Pollen" patented technology

This invention provides a method and system for quantitative identification of fluvial and lacustrine facies based on paleontological ecological habit reconstruction, comprising: collecting target samples from a target area within a target well; determining that the target samples do not contain ostracods and gastropods; obtaining the plant species of aquatic plant pollen, the algal species of algal pollen, the quantity of plant pollen of each aquatic plant genus, and the quantity of algal pollen of each algal genus in the target samples; quantitatively calculating paleoenvironmental identification indicators based on the plant species, algal species, plant pollen quantity, and algal pollen quantity; and determining the fluvial and lacustrine sedimentary environment of the target area based on the paleoenvironmental identification indicators. This invention overcomes the drawbacks of traditional qualitative methods that are "highly subjective and rely on experience-based judgment," is more effective, does not require extensive and expensive geochemical analysis and testing, is not limited by specific oxidation / reduction environments of strata or subsequent alterations, and has wider applicability.

The invention provides a cattail pollen content prediction method and system based on a hyperspectral double-flow multi-scale CNN, and belongs to the field of quality detection of traditional Chinese medicinal materials. The method comprises the following steps: acquiring hyperspectral image data of a pollen typhae sample, preprocessing the acquired hyperspectral image data, and extracting region-of-interest spectral data of the pollen typhae sample; inputting the extracted spectral data of the region of interest into a trained double-flow multi-scale residual fusion CNN model, performing multi-scale feature extraction and fusion by using a VNIR multi-scale branch and an NIR multi-scale branch, and outputting multi-scale fusion features; inputting the multi-scale fusion features into an attention fusion module, and outputting final fusion features; and based on the final fusion features, outputting a content prediction value of the active ingredients of the pollen typhae through a content prediction layer. The method solves the problems that a traditional detection method is low in efficiency, samples are damaged, and an existing spectrum model ignores wave band characteristic differences, so that precision is insufficient, and rapid, lossless and high-precision prediction of the pollen typhae content is achieved.

The application discloses a kind of based on location-bound information guidance image object segmentation method belongs to computer vision field.The present application obtains pollen segmentation image by combining the information of two modules: target positioning module obtains positioning map by the classification network trained by image level label, provides accurate location information;Boundary guidance module utilizes pollen contour prior knowledge to match target pollen to obtain saliency map, obtains fine-grained boundary information.This method can make full use of the complementary relationship between the two, obtain accurate target pollen boundary, and discard non-target object (such as impurity) pixel, significantly improve pollen image segmentation quality.

The invention discloses a breeding and identification method of double-low photo-thermo-sensitive dual-purpose genic male sterile line rice, and belongs to the field of rice breeding. The method specifically comprises the following steps: respectively carrying out constant-temperature treatment at 23.0 + / -0.1 DEG C and 19.0 + / -0.1 DEG C for 10 days from a pollen mother cell formation stage to a meiosis stage, taking out a sterile line material after the treatment, and placing the sterile line material under a natural light temperature condition; the identification method of the double-low photo-thermo-sensitive dual-purpose genic male sterile rice comprises the following steps: placing anther on a glass slide during flowering, mashing the anther with tweezers in 0.1% I2-KI liquid, observing pollen fertility under a microscope, and treating at 23.0 DEG C for 10d to obtain pollen dyeable rate lt; the dyeable rate gt of the pollen under the conditions that the pollen is treated at 19.0 DEG C for 10 days is 1%; 70% of the sterile line is a double-low dual-purpose genic sterile line. Hybrid seed production and sterile line seed propagation of the double-low photo-thermo-sensitive dual-purpose genic male sterile line bred by the method are both safe, and sustainable development of two-line method hybrid rice is promoted.

This invention proposes a method and system for predicting the content of Typha pollen based on a hyperspectral dual-stream multi-scale CNN, belonging to the field of quality detection of traditional Chinese medicinal materials. The method includes: acquiring hyperspectral image data of Typha pollen samples; preprocessing the acquired hyperspectral image data and extracting the region of interest (ROI) spectral data of the Typha pollen samples; inputting the extracted ROI spectral data into a trained dual-stream multi-scale residual fusion CNN model, using VNIR and NIR multi-scale branches for multi-scale feature extraction and fusion, and outputting multi-scale fused features; inputting the multi-scale fused features into an attention fusion module, and outputting the final fused features; based on the final fused features, outputting the predicted content of the effective components of Typha pollen through a content prediction layer. This invention solves the problems of low efficiency, sample destruction, and insufficient accuracy caused by existing spectral models ignoring band characteristic differences in traditional detection methods, achieving rapid, non-destructive, and high-precision prediction of Typha pollen content.

This invention discloses a pollen-like imidacloprid nanopesticide, its preparation method, and its application. The preparation method includes: mixing solid silica spheres, water, copper nitrate, and ammonia solution, and then carrying out a hydrothermal reaction at 120-140℃; the mass ratio of the solid silica spheres to ammonia in the ammonia solution is 1:8 to 1:20; rinsing the product in hydrochloric acid to obtain pollen-like, rough-surfaced hollow silica; dissolving sucrose in water to form a sucrose aqueous solution; dissolving imidacloprid in acetone, adding the pollen-like, rough-surfaced hollow silica, stirring, and then rotary evaporating; adding the sucrose aqueous solution and rotary evaporating again. Compared with commercially available imidacloprid water-dispersible particles, the pesticide of this invention has 2.1 times the adhesion ability on pakchoi leaves. Under simulated rainfall conditions, the leaf retention rate of the pollen-like nanopesticide is 4.8 times that of commercially available imidacloprid water-dispersible particles. After 8 hours of UV irradiation, the imidacloprid residue rate of the pesticide of this invention is still as high as 76.8%.

The application provides a quantitative recovery method of paleoclimate based on spore and pollen data, which comprises the following steps: step 1, establishing a basic database of paleo-pollen; step 2, establishing a comprehensive database of ecological and climatic conditions of paleo-pollen; step 3, reconstructing a paleoclimate distribution model tending to normal distribution; step 4, checking the distribution shape of the average distribution data model; step 5, normalizing the data model; and step 6, recovering the characteristics of the paleoclimate conditions. The quantitative recovery method of paleoclimate based on spore and pollen data has strong adaptability and expandability, can be combined with the discrimination of the source of the early spore and pollen, adjust the scale of the confidence interval based on the proportion of the original and external spore and pollen, and further eliminate the interference of the external spore and pollen with different degrees on the recovery of the paleoclimate. The method has clear and clear principles, quantifies the recovery of the paleoclimate, and has high accuracy and operability.

This invention provides a method for inducing and culturing embryogenic callus from *Pinus kesiya*, relating to the field of biotechnology. The method includes: collecting male cones of *Pinus kesiya* and performing surface disinfection on the collected male cones; immersing the surface-disinfected male cones in a detoxification solution for detoxification; washing the detoxified male flower explants and drying them; removing the dried explants, separating the male gametophytes from the explants, and culturing them in the dark in a culture medium until callus is induced. This method uses male gametophytes of *Pinus kesiya* for explant cultivation. Anthers, as reproductive organs of plants, possess stable genetic information, which helps maintain the superior traits of *Pinus kesiya*. Using *Pinus kesiya* anthers as breeding material allows for early and stable segregation of offspring, improving the reliability and accuracy of selection. Furthermore, the callus induced by pollen can maintain the superior traits of the maternal parent, which is of great significance for subsequent propagation of superior plants.