15 results about "Motility" patented technology

The invention relates to the technical field of multi-modal fusion, in particular to a sperm quality assessment method and system based on multi-modal fusion, and the method comprises the following steps: obtaining image and parameter data to generate a space-time alignment set, extracting trajectory calculation linearity, analyzing parameter fluctuation to mark an abnormal time window, extracting an image assessment deformity rate to generate a feature matrix, and grading to generate a multi-modal sperm quality evaluation result. According to the method, linear calculation is introduced in the trajectory path extraction process, spatial distribution thermodynamic mapping is combined, the dynamic characteristics of local sperm populations are dominated, an abnormal time window is constructed based on the parameter value change rate and a set threshold value, and motion consistency indexes are combined, so that the dynamic characteristics of the local sperm populations are optimized. The explanation depth of sperm head malformation data in quality judgment is enhanced, the dimension space of sperm quality description is effectively expanded, the consistency ratio between vitality and morphology is introduced, track continuous characteristics are combined, a hierarchical grading system is established, and the accuracy of sperm quality evaluation results is ensured.

The invention discloses a method for evaluating the environmental risk of perfluorooctane sulfonic acid by using euglena gracilis, and belongs to the field of environmental pollutant biological monitoring and ecotoxicology evaluation. The method comprises the following steps: detecting the photosynthetic activity and the movement ability of Euglena gracilis exposed to perfluorooctane sulfonic acid with environmental concentration and the organelle distribution condition of the perfluorooctane sulfonic acid in euglena gracilis cells in situ; the photosynthetic activity comprises in-situ monitoring of chlorophyll fluorescence parameters and maximum non-photochemical quenching coefficient of euglena gracilis, and quantitative analysis of chloroplast pigment content; the movement ability comprises horizontal light-driving movement speed and vertical light-driving movement speed measurement of the euglena gracilis and flagellum shedding rate calculation. The method breaks through the limitation of a traditional single autotrophic mode, reveals a regulation and control mechanism of nutritional conditions on toxic effects, provides a scientific basis for water environment safety monitoring and optimization, and has the advantages of being convenient to operate and low in cost.

The invention discloses vitality detection equipment for frozen and unfrozen boar semen, and relates to the technical field of biological fluid detection, the vitality detection equipment comprises a main cavity and a driven interference assembly, the driven interference assembly is arranged on the inner wall of the main cavity, and the driven interference assembly comprises a telescopic rod, an electromagnetic support and a set of boosting blades; a metal tank is arranged above the electromagnetic support, the outer wall of the electromagnetic support is coated with a copper arc sleeve, and the copper arc sleeve is made of a non-magnetic material, so that the direction of a magnetic field generated after the electromagnetic support is electrified is vertically upward, and an external force adsorption effect directly acts on the metal tank; according to the method, high-speed impact force generated by water source circulation is used as running power of a mechanical part, and the semen and the solution are mixed through centrifugal force generated by rotation, so that the mechanical part is prevented from being in direct contact and stirring with the semen, and on the premise of accelerating the mixing rate, generation of shearing force can be inhibited, the integrity of sperm cells is guaranteed, and the sperm quality is improved. And the accuracy of subsequent detection results is improved.

The invention provides an SNP (Single Nucleotide Polymorphism) marker for influencing the rapid forward movement sperm proportion of a pig. The sequence of nucleic acid of the SNP marker is shown as SEQ ID No.1, and the site of the SNP marker is located at the 301st site from the 5'end on the nucleic acid shown as SEQ ID No.1, corresponds to the 3803902 site from the 5 'end on the NW018084979.1 chromosome of the international pig genome of the version 11.1, and is C or T.

This invention belongs to the field of microalgal cell motility analysis and detection, specifically relating to a method and application for assessing the spore motility activity of the marine parasitic dinoflagellate *Heliotropium indicum* using trajectory analysis. The method includes steps such as microscopic image acquisition, video tag re-identification for image sequence grouping, image preprocessing (grayscale conversion, filtering and noise reduction, thresholding, hole filling, and overlap segmentation), trajectory detection based on the nearest neighbor algorithm, and visualization of trajectory and velocity data output. The spore cell motility activity detection method proposed in this invention can be used to evaluate the spread and infective capacity of *Heliotropium indicum*, as well as assess the killing effect of different drug types and dosages, providing technical support for taking corresponding control measures. This detection technology is practical, efficient, accurate, and reliable, and is expected to be widely applied in practice, promoting the healthy and sustainable development of aquaculture.

A method, computer program product, and computer system for classifying bacteria. The method includes extracting morphological features corresponding to one or more bacteria and extracting motility features corresponding to the one or more bacteria. The method further includes merging the morphological features and the motility features into a merged vector feature and classifying the one or more bacteria based on the merged vector feature.

Disclosed are methods and systems for modifying the motility of engineered multicellular organisms. The engineered multicellular organisms include an aggregate of cells, e.g., ciliated cells. The methods may include exposing the engineered multicellular organism to an acoustic stimulation, e.g., sound at a frequency of about 5 Hz to about 1000 Hz.

A motility-based spermatozoa separation device has a hollow cylindrical body that includes an internal passageway. The hollow cylindrical body is configured for insertion into a test tube having a semen sample placed therein. A sperm separating member is disposed in the internal passageway. When the hollow cylindrical body is inserted into the test tube, the sperm separating member divides the test tube into an upper cavity and a lower cavity. A suitable media can be inserted in the internal passageway (e.g., the media flowing downwardly through the sperm separating member and onto the semen sample located in the lower cavity) placing the lower cavity in fluid communication with the upper cavity. Progressively motile spermatozoa from the semen sample can swim from the lower cavity toward the sperm separating member, swimming upwardly therethrough, and into the upper cavity to be obtained therefrom.

A system for acquiring imaging information, diagnosis, and treatment of a subject using magnetic-oxygen responsive bacteria, and methods of use thereof; the system has a processor; and a memory storing program code that, when executed by the processor, causes the processor to acquire imaging information of a target region within the subject; applying a magnetic field under the first magnetic field intensity so as to guide magnetic-oxygen response bacteria towards a target region with an anoxic region in the subject; and applying a magnetic field having a second magnetic field strength lower than the first magnetic field strength to cause the magnetic-oxygen responsive bacteria to follow an oxygen gradient before the magnetic-oxygen responsive bacteria lose motility to attract the bacteria to the hypoxic region.

An ultra-high molecular weight polyethylene powder which has an intrinsic viscosity (IV) of 12.0-35.0 dL / g inclusive and a motility index of 57-73 milliseconds inclusive as determined from the following formula I [motility index] = T [alpha] * R [alpha] / (R [alpha] + R [beta]) + T [beta] * R [beta] / (R [alpha] + R [beta]) (formula I) [in formula I, T [alpha] is the relaxation time (milliseconds) of a low-motility component [alpha], R [beta] is the relaxation time (milliseconds) of the low-motility component [alpha], R [beta] is the relaxation time (milliseconds) of the low-motility component [alpha], and R [beta] is the relaxation time (milliseconds) of the low-motility component [beta]. R [alpha] is the abundance ratio of the component [alpha] having low motility, T [beta] is the relaxation time (milliseconds) of the component [beta] having middle motility, and R [beta] is the abundance ratio of the component [beta] having middle motility. T [alpha], R [alpha], T [beta], and R [beta] are values obtained by approximating a free induction decay curve obtained by the Carr Purcell Meiboom Gill method using pulse NMR to three components, i.e., a component [alpha] having low motility, a component [beta] having middle motility, and a component [gamma] having high motility].

This technology provides the ability to control the motility of microorganisms. [Solution] The attractant for Pseudomonas bacteria comprises at least one of polylysine and Bacillus bacteria, indicated by accession number NITE P-03755.

The utility model discloses a device that promotes the gastrointestinal peristalsis of animals, including upper mesa and lower mesa, the upper mesa is set on the lower mesa upper end, be provided with stabilizing assembly between the lower mesa and upper mesa, the stabilizing assembly is used for guaranteeing the stability when shaking, the lower mesa inside is provided with power component, and the power component is used for providing the power of shaking, the utility model belongs to promote the gastrointestinal peristalsis technical field of animals, and specifically is a device that promotes the gastrointestinal peristalsis of animals.

The application provides application of indole-3-lactic acid in improving immunity of sea cucumber and inhibiting virulence factors of Vibrio splendidus. The application is used for preparing a product for inhibiting virulence factors of Vibrio, and a product for improving immune defense ability of aquatic animals; wherein the aquatic animals are preferably sea cucumber, and the Vibrio is preferably Vibrio splendidus. Researches show that under the premise of basically not affecting the growth of Vibrio splendidus, the indole-3-lactic acid can significantly reduce hemolytic activity, protease activity, motility and biofilm formation of the Vibrio splendidus, and can reduce intestinal permeability of the sea cucumber, repair intestinal physical barrier, relieve excessive inflammatory response induced by Vibrio splendidus infection, thereby improving survival rate of the sea cucumber after attack and reducing incidence probability. The technology has the advantages of small dosage, clear effect, green safety and low drug resistance selection pressure, and is suitable for prevention and control of sea cucumber skin rot syndrome.

The invention discloses upstream type high-activity sperm optimization equipment which comprises a base, a liquid storage pipe and a liquid suction assembly, the liquid storage pipe is arranged on the base, the liquid suction assembly comprises a liquid suction pipe and a plugging operation unit, and the plugging operation unit is arranged in the top of the liquid storage pipe. The invention relates to the technical field of assisted reproduction, and particularly provides upstream type high-activity sperm optimization equipment. Through a sealing matching structure of the pipette and the plugging block, physical isolation of a culture solution containing high-activity sperms and bottom-layer sperm can be realized after completion at the upper stream of the sperms, the problem of impurity mixing caused by upwelling of the bottom-layer sperm in traditional operation is effectively avoided, the purity and concentration of the screened sperms are remarkably improved, and the screening efficiency is improved. And a high-quality sperm guarantee is provided for subsequent fertilization.