18 results about "Otolith" patented technology

The invention belongs to the technical field of fish ecology, and particularly relates to a nude carp otolith embedding method based on a longitudinal section and a preparation method and application of an otolith grinding sheet. The epoxy resin and the curing agent are mixed according to a certain mass ratio and then placed on the vegetable parchment to embed the longitudinal section of the naked carp otolith, the vegetable parchment is resistant to high temperature and high in strength and is not prone to deformation caused by high temperature, and the cured embedding piece is easily separated from the vegetable parchment; the embedding agent is low in shrinkage rate after being cured, the otolith is not prone to fracture, the hardness requirement of subsequent grinding can be met, adhesion is high, degumming is avoided in the subsequent grinding process, and fragmentation of the naked carp otolith is effectively avoided. According to the method, the embedding piece polished for the first time is immediately immersed in water, oxidation of the polished surface of the otolith can be prevented, subsequent polishing is continued, and the otolith grinding piece with clear wheel lines is obtained. The method is simple in operation process, does not need to use a high-cost and low-efficiency embedding mold, reduces the preparation cost, and improves the preparation efficiency.

The invention discloses a fish spawning site position calculation method based on otolith microchemistry and river micronization landscape atlas, which comprises the following steps: otolith and water body sample pretreatment: taking out an otolith sample from a sample tube for slice preparation, and preparing a standard solution by using the water body sample; experimental analysis: measuring trace chemical elements, namely Sr, Ba, Mn, Mg and Ca, of otolith; data analysis: drawing a river micronized landscape map, constructing a mixed effect model to calculate otolith trace element values, constructing a random forest model based on the otolith trace element values, and performing spawning site position calculation on fish otolith core microchemistry; according to the method, a brand new biogeochemical framework is constructed, and the spawning site position of the fish is accurately calculated by combining otolith microchemistry, a river micronization landscape map and a machine learning technology.

The invention provides an otolith shape detection and identification method based on machine learning, and relates to the technical field of otolith detection, and the method comprises the steps: S101, obtaining an original otolith image, and carrying out the preprocessing of the original otolith image; s102, the user marks a core reference line on the original otolith image; s103, forming an ROI region along the core reference line, and performing feature extraction on the ROI region to obtain ROI region features; s104, constructing a wheel pattern recognition model, providing prior constraints for the wheel pattern recognition model by using an environment-wheel pattern association rule, inputting the ROI region features into the wheel pattern recognition model, and outputting wheel pattern position information and wheel pattern number information; and S105, visualizing the position information of the wheel ripples and the number information of the wheel ripples. According to the method, the otolith ring pattern recognition efficiency and accuracy can be improved, reliable data support can be provided for fish population dynamic monitoring, fishery resource evaluation and ecological environment research, and the application range is wide.

The invention relates to a Pseudosciaena crocea geographical population identification method combining otolith and morphological measurement. The method comprises the following steps: obtaining a Pseudosciaena crocea sample to be identified; obtaining morphological measurement data; performing first standardization processing on the morphological measurement data to obtain standardized morphological measurement data, inputting the standardized morphological measurement data into a pre-established morphological discrimination model, and outputting a first discrimination result through the morphological discrimination model; acquiring sagittal stone of the large yellow croaker sample to be identified; obtaining landmark point distance measurement data based on a preset otolith landmark point through sagittal otolith; performing second standardization processing on the landmark point distance measurement data to obtain standardized landmark point distance measurement data, inputting the standardized landmark point distance measurement data into a pre-established otolith discrimination model, and outputting a second discrimination result through the otolith discrimination model; and performing final identification based on the first judgment result and the second judgment result. The method can accurately, simply and conveniently identify three geographical populations of the Larimichthys crocea sal ammoniac family, the Fujian eastern Guangdong family and the Dai-qu family in batches.

The invention relates to a large-scale marking method for released small-specification fries based on fin ray strontium marking, which comprises the following steps of: in a fish fry breeding stage, performing strontium marking on the small-specification fries for several hours by increasing the concentration of strontium ions in seawater in a breeding pool, so that fish fin rays form a'high-strontium marking ring '; and after the marked fish is recaptured, cutting fin rays of the marked fish to detect the content of the strontium element. The method does not depend on otolith, is factory-like, is low in marking cost, and does not cause lethal injury to fishes during sampling.

The application discloses a kind of based on otolith resonance and artificial intelligence's Pseudosciaena crocea parent selective fishing method and system, comprising: the resonance frequency of otolith of different body length Pseudosciaena crocea is determined by experiment, and "body length-resonance frequency" mapping model is established;By analyzing the difference of otolith resonance frequency of different body length Pseudosciaena crocea, adjustable frequency acoustic signal is designed;According to adjustable frequency acoustic signal induction target parent fish, and through underwater acoustic sensor, optical sensor and environmental parameter detection, fish school dynamics and environmental noise are monitored in real time;Real-time analysis fish school feedback signal using deep learning model, identify fish length and distribution, optimize acoustic parameters;Combining acoustic induction and light induction technology, guide parent fish to concentrate in target area after starting mechanical net, complete fishing.The application realizes the efficient, selective fishing of Pseudosciaena crocea parent, significantly reduces the mis-capture rate of juvenile fish, improves fishing efficiency and parent survival rate.

The present invention provides a fall risk indicator measuring device that can measure an index of the biological reflex response based on the sensing of changes in acceleration of the otolith organs of a subject, in relation to the risk of falling when the subject falls. [Solution] The fall risk index measuring device 1 comprises a ride section 10 on which a subject sits, a support device 20 that supports the ride section, a release device 22 that releases the support of the ride section by the support device and allows the ride section to fall freely, a handrail section 14 for the subject's fingers to grasp, a pressure sensor 15 that measures the pressure of the fingers, and a control unit 60. The control unit 60 comprises a first reaction measuring unit 61 that measures a first reaction time from the time of release by the release device to the time of reaching a first pressure, based on the finger pressure value measured by the pressure sensor.

The invention provides a novel method for preparing a fish otolith specimen, and belongs to the field of biological specimen preparation. Comprising the steps of specimen fixation, head skin dissection and segmentation, head muscle dissection and segmentation, head skeleton exposure and dissection, muscle dissection, dehydration, degreasing, polymer infiltration, fixation, solidification and the like. More importantly, the spatial position relation and the connection mode of the otolith, the skull, the brain, the nerve and the muscle system are displayed in situ. The otolith can be processed in a non-destructive mode, the otolith can be taken out or put back, the flexible display effect that the same specimen can display the details of the otolith and can also display overall dissection association is achieved, and the teaching and scientific research value of the specimen is greatly improved.

The utility model provides an otolithiasis semicircular canal three-dimensional model, which relates to the technical field of medical models, and comprises a base, a pillar is fixedly connected above the base, the end part of the pillar is rotatably connected with a model arc frame, and the inside of the model arc frame is rotatably connected with a simulation head model through a fulcrum shaft. The simulation semicircular canal model is fixed outside the simulation head model in a popular and easy-to-understand manner, so that the inclination angle of the simulation semicircular canal model is consistent with the inclination angle of the semicircular canal in a human body, understanding of a patient is facilitated, and the simulation semicircular canal model is filled with a glycerin solution for simulating internal lymph in the semicircular canal, so that the simulation head model can be used for simulating the internal lymph in the semicircular canal. Along with the inclination and rotation of the simulation head model, the movement track and path of the otolith crystal model in the simulation semicircular canal model in the internal lymph can be observed, and the problem that a patient cannot clearly understand the treatment process of otolithiasis due to the fact that the patient cannot easily understand the structure of the patient and the relation between the angle of the canal body model and the angle of the head of the human body is solved.

The invention relates to a quantitative analysis method for a fish otolith shape variation source, and belongs to the technical field of fishery resource evaluation and ecological morphological analysis. A matrix F is decomposed through a principal component analysis method, so that hierarchical redundancy analysis is carried out on a morphological matrix, and the fish otolith shape variation source is obtained. Modeling the relationship between the form matrix and different explanation matrixes, evaluating the significance of each variable by adopting replacement test, calculating a variance expansion factor to diagnose collinearity, forming a simplified model, and quantifying the independent contribution rate of the feeding habits to the otolith shape variation through variation division based on the simplified model. According to the method, through the mixed effect model and variance analysis, the mixed factors are effectively controlled, reliable quantitative estimation of the feeding habit influence is provided, and the scientific value of a research result is greatly improved. The method is not only suitable for various fishes, but also can be expanded to morphological ecology research of other biological characteristics, and a brand new research normal form and a powerful technical tool are provided for fish ecology and fishery resource management.

The invention provides an estuary juvenile fish habitat quality evaluation method, which comprises the following steps: S11, collecting juvenile fish samples, simultaneously collecting environment data preferred by the juvenile fish samples, and processing the environment data to obtain an environment factor adaptation threshold value and the requirements of juvenile fishes on habitat characteristics; s12, extracting the gastric content of the juvenile fish sample, determining the gastric content, determining the composition of the gastric content, and further deducing the feeding habitat of the juvenile fish; s13, extracting and analyzing otolith of the juvenile fish sample, and determining a migration path recording matrix of juvenile fish structuring; s14, calculating an ecological adaptability index of the juvenile fish in the single habitat according to the environmental factor adaptation threshold value of the juvenile fish sample, the habitat characteristic demand of the juvenile fish, the composition of the stomach content of the juvenile fish and the structured migration path recording matrix of the juvenile fish; and S15, calculating the final ecological adaptability value of the corresponding habitat according to the ecological adaptability index values of all juvenile fishes in the single habitat. According to the invention, the accuracy of key juvenile rearing habitat identification and the precision of ecological management are significantly improved.

The invention relates to the technical field of fish marking and tracking, and discloses a scleroderma fish marking method based on multi-element composite marking. The method specifically comprises the following steps: marking the sclerobone fish for two or more times by adopting a plurality of marking elements, and introducing the marking elements into the sclerobone fish body, so as to form a composite element fingerprint spectrum formed by a plurality of marking peaks in the otolith of the sclerobone fish. And then, scanning along the growth axis of the otolith through electron probe microscopic analysis (EPMA), analyzing the position, intensity and width characteristics of a mark peak, and realizing high-resolution identification and tracking of an individual or a group. According to the method, the stable and recognizable compound element fingerprints can be formed in the otolith by reasonably designing element types, concentration gradients and processing time, and the method is suitable for multiple scenes such as fish population dynamic monitoring, fishery management and species protection.

The invention relates to the technical field of aquatic organism experimental equipment, in particular to a matrix type fish otolith batch cleaning and storing system and method. The system comprises a cleaning base, a sampling array plate, a microporous lining basket and an air drying system, and a piezoelectric ceramic transducer is embedded in the bottom of a groove body of the cleaning base and used for generating ultrasonic vibration; the sampling array plate is arranged above the cleaning base, a plurality of through holes are uniformly formed in the plate surface of the sampling array plate, and coordinate scales are engraved on each hole position; the micropore lining baskets are integrally or independently placed in the through hole positions of the sampling array plate; the air drying system comprises a fan unit, and the fan unit is installed on one side of the cleaning base and is obliquely aligned with the surface of the sampling array plate through an air guide groove. According to the invention, integration, automation and informatization of otolith batch processing are realized, and the problems of easy confusion of samples, low processing efficiency, uneven quality and difficulty in tracing are effectively solved.

A large yellow croaker population identification method and apparatus based on stable carbon and oxygen isotopes in otoliths, which method and apparatus belong to the field of fish population identification. In the method, variance calculation and contribution analysis are performed to determine a first target isotope, thereby identifying whether a large yellow croaker is farmed or wild. The method is more objective and accurate. In the method, compared with conventional morphological or simple tagging methods, using variations in stable carbon and oxygen isotopes in otoliths caused by the impact of environments and dietary sources enables more accurate population discrimination, thereby effectively avoiding erroneous determination caused by factors such as small individual morphological variations or tag loss. Thus, in complex fishery market environments, farmed and wild large yellow croakers can be effectively distinguished, thereby helping to standardize the market order and protect wild fishery resources.

The present application relates to a method for identifying geographical populations of large yellow croaker by combining otolith and morphological measurement, obtaining a large yellow croaker sample to be identified; obtaining morphological measurement data; performing first standardization processing on the morphological measurement data to obtain standardized morphological measurement data, and inputting the standardized morphological measurement data into a pre-established morphological identification model to output a first identification result through the morphological identification model; obtaining a sagitta of the large yellow croaker sample to be identified; obtaining landmark distance measurement data based on pre-set otolith landmarks through the sagitta; performing second standardization processing on the landmark distance measurement data to obtain standardized landmark distance measurement data, inputting the standardized landmark distance measurement data into a pre-established otolith identification model, and outputting a second identification result through the otolith identification model; and performing final identification based on the first identification result and the second identification result. The present application can accurately, simply and in batches identify three geographical populations of the Pseudosciaena crocea hoi, the Pseudosciaena crocea minyuanensis and the Pseudosciaena crocea daiqua.

The otolith resetting pillow comprises side wing plates and a pillow body, the pillow body comprises a pillowcase, a base layer and supporting layers, the supporting layers comprise the first supporting layer and the second supporting layer which are distributed from front to back, the base layer is arranged below the supporting layers, and the pillowcase wraps the supporting layers and the base layer; an angle adjusting mechanism used for adjusting the inclination angle of the second supporting layer is arranged in the base layer. The side wing plate is arranged above the pillow body and located at the left end and / or the right end above the second supporting layer. The angle stepless adjustment can be achieved, the problem that the angle of a traditional pillow is fixed and cannot be adjusted is solved, the use flexibility is improved, individualized requirements are met, and different rehabilitation requirements are met. Meanwhile, the side wing plates are arranged, free rotation of the head of the patient is avoided, and then the reduction effect is prevented from being affected.

The application discloses an intelligent head position fixing support based on otolith repositioning and an operation method, and belongs to the technical field of medical devices. The device comprises a fixing support, the fixing support is in damping rotary connection with a treatment cabin, the back of the treatment cabin is detachably connected with a rotary support, the rotary support is installed on a treatment support, the treatment support drives the rotary support to rotate axially, the rotary support drives the treatment cabin to rotate horizontally, head clamping assemblies are installed on the inside of the fixing support, the head clamping assemblies are clamped on the two sides of the head of a patient, shoulder and neck pillows are installed on the bottom of the two sides of the fixing support, the shoulder and neck pillows are used for fixing the shoulders of the patient, an adjusting assembly is arranged on the fixing support, the shoulder and neck pillows can be adjusted in position according to the shoulder width and height difference of different patients through a bidirectional adjusting structure in the horizontal direction and the vertical direction, the two sides are separately adjusted, special conditions that the shoulder widths of the two sides are inconsistent can be adapted, the head clamping pads are adjusted synchronously according to the shoulder and neck pillows, and the head clamping pads are connected in a magnetic attraction mode, so that the head clamping pads are convenient to disassemble and assemble.