16 results about "Virus present" patented technology

The application belongs to the computer field and discloses a virus detection method, device, equipment and storage medium. The method comprises the following steps: migrating to-be-detected data to a target GPU, the target GPU storing a preset feature matching algorithm, the preset feature matching algorithm being used for judging whether a virus feature code exists in the data; and calling the preset feature matching algorithm in the target GPU to perform virus detection on the to-be-detected data. Since the to-be-detected data is migrated to the target GPU, the preset feature matching algorithm in the target GPU is called to perform virus detection on the to-be-detected data. Compared with the existing method of matching a virus feature code through a CPU and then detecting whether to-be-detected data contains a virus, the above method can reduce the occupation of the CPU and optimize the running performance of the computer.

The application provides a PVDF porous membrane for removing viruses, a preparation method and a filter element, the porous membrane is made of PVDF material, comprises a main body, one side of the main body is a first porous surface, the other side of the main body is a second porous surface, the SEM measurement average pore size gradient of the main body is 2-12 nm / μm; the pore size gradient of the porous membrane is small; in the wet state of the porous membrane main body, the part of capturing 20 nm colloidal gold is D20, D20 is the area from the first porous surface and located at 20%-100% of the film thickness, part of the 20 nm colloidal gold is located at the second porous surface; the thickness of D20 is 15-35 μm; the porous membrane has good interception effect on 20 nm colloidal gold; meanwhile, the pore size of the small pore area is large, so that the membrane flux is high and the flux attenuation is slow, the mechanical strength is high, and the porous membrane is particularly suitable for filtering high-concentration protein fluid; the LRV value of the porous membrane for 20 nm colloidal gold is greater than 2 and less than 4, the double-layer stacking is used in actual use, and the risk of virus leakage is avoided; the preparation method is simple, fast, effective, green and environment-friendly.

The present application provides a carrier and a method for obtaining or removing, or detecting, an extracellular membrane vesicle or a virus present in a sample with high purity, in an intact state, easily and efficiently. The present application relates to: 1. a carrier (Tim carrier) combined with a protein (Tim protein) selected from among a protein included in a molecule 4 (Tim4) protein, a Tim3 protein, and a Tim1 protein; 2. a method for obtaining an extracellular membrane vesicle or a virus in a sample; 3. a method for removing an extracellular membrane vesicle or a virus in a sample; 4. a method for detecting an extracellular membrane vesicle or a virus in a sample; 5. a capture kit for an extracellular membrane vesicle or a virus, which is formed by containing a Tim carrier; and 6. a capture kit for an extracellular membrane vesicle or a virus, which is formed by containing a reagent including a Tim protein and a reagent including a carrier.

To provide a virus inactivator that enables the inactivation of viruses present in the environment. [Solution] A virus inactivator comprising (A) maleic acrylate copolymer or a salt thereof, and (B) at least one surfactant selected from anionic surfactants, cationic surfactants, and amphoteric surfactants as active ingredients.

To provide a virus inactivator that enables the inactivation of viruses present in the environment. [Solution] (A) A virus inactivator comprising maleic acrylate copolymer or a salt thereof as an active ingredient.

Methods and systems of mechanically homogenizing an unprocessed sample are disclosed, that include a mechanical homogenizer that is used to mechanically homogenize the unprocessed sample to produce a homogenized sample. Nucleic acids in the homogenized sample are amplified without performing any isolation, separation, purification, or extraction of the nucleic acids. The amplification results are then analyzed to detect viral nucleic acids and / or the presence or absence of a virus in the sample.

This application provides a method and related equipment for determining regional viral evolution trends based on wastewater sequencing. The method includes determining the viral evolution rate based on multiple first target viral lineages and their abundance, as well as multiple second target viral lineages and their abundance; performing risk analysis on predetermined target viruses present in multiple first water samples based on multiple target viral mutation site information to obtain viral transmission risk; determining the change in the immune level of the population in the predetermined target area against the predetermined target viral lineage based on infection distribution data and neutralizing antibody titer data for each immune source to obtain the prediction result of the dominant lineage succession of the viral lineage over time; and using the viral evolution rate, viral transmission risk, and the prediction result of the dominant lineage succession of each viral lineage over time as the viral evolution trend information corresponding to the predetermined target area, thus solving the technical problem that the determination of regional viral evolution trends in the prior art is inaccurate.

Detection of viruses present in cells The present invention provides 1. A method for identifying viral DNA integrated into the genome of at least one mammalian test cell, comprising: (a) determining the presence or absence of viral DNA in a DNA sample obtained from a mammalian test cell; (b) determining the methylation status of at least one CpG site in the viral DNA of a DNA sample obtained from a mammalian test cell; and the presence of viral DNA after step (a) and a hypermethylated state in step (b) indicates that the viral DNA has been integrated into the mammalian test cell and that the virus is inactive, respectively; the presence of viral DNA after step (a) and a baseline methylation state or a hypomethylated state in step (b) indicates that the viral DNA has integrated into the mammalian test cell and that the virus is active, respectively; the absence of viral DNA after step (a) indicates that the viral DNA has not integrated into the mammalian test cell; Methods performed on arrays Regarding.

Methods for the rapid detection of the presence or absence of Epstein Barr Virus (EBV) in a biological or non-biological sample are described. The methods can include performing an amplifying step, a hybridizing step, and a detecting step. Furthermore, primers and probes targeting EBV, and kits are provided that are designed for the detection of target regions of EBV. Also described are kits, reaction mixtures, and oligonucleotides (e.g., primer and probe) for the amplification and detection of EBV. Also described are primers and probes that detect different regions of EBV, and can be employed in a dual target assay for simultaneously detecting two different and non-overlapping target regions of EBV.

The invention relates to the technical field of software virus detection, and discloses an electric power software virus detection method embedded with a hardware fusing mechanism, which is used for solving the problem of existence of viruses due to misjudgment caused by software updating during software virus detection, and comprises the following steps of: when a software system is updated, collecting running state data, calculating the virus feature matching degree of each behavior feature vector in the feature set, judging whether viruses exist or not, if yes, obtaining updating related parameters of the software system, evaluating to obtain updating influence indexes, judging whether erroneous judgment occurs or not, and constructing a security baseline behavior model; if it is judged that misjudgment does not occur currently, a dynamic deviation degree index is obtained through calculation, if it is judged that a serious safety baseline deviation behavior exists according to the dynamic deviation degree index, a hardware fusing mechanism is triggered, and the accuracy of virus detection is effectively improved.

The invention relates to a system 400 for performing LAMP amplification and for detecting the presence of DNA and / or RNA in a sample. The system comprises the elements of a sample preparation device 200, a reaction vessel 100, and optionally a heating device 300. The system 400 allows for the simple and rapid detection of the presence of DNA and / or RNA in a sample, for example, to detect the presence of a virus in the sample.

The application relates to the technical field of software virus detection, and discloses a power software virus detection method embedded with a hardware fuse mechanism, which is used for solving the problem of false judgment of virus existence caused by software updating during software virus detection, and comprises the following steps: collecting running state data to obtain a software system behavior characteristic set when a software system is updated; calculating virus characteristic matching degrees of each behavior characteristic vector in the characteristic set; determining whether virus exists; if it is determined that virus exists, obtaining updating related parameters of the software system, evaluating an updating influence index, determining whether false judgment occurs at present, constructing a safety baseline behavior model, calculating a dynamic deviation index if it is determined that false judgment does not occur at present, and triggering the hardware fuse mechanism if it is determined that there is serious deviation from the safety baseline behavior according to the dynamic deviation index, so that the accuracy of virus detection is effectively improved.

Systems and methods described herein include detecting a presence or absence of HPV in a biological sample having cell-free nucleic acids from a subject and potentially cell-free nucleic acids from an HPV strain. In response to detecting HPV viral nucleic acids in the biological sample, an HPV-based multiclass classifier that predicts a score for each HPV-associated cancer type is applied. The HPV-based multiclass classifier is trained on a training set consisting of HPV-positive cancer samples. An HPV-associated cancer associated with the biological sample is determined based on the scores predicted by the HPV multiclass classifier.

The invention discloses a virus processing method, device and system and a storage medium, and the method comprises the steps: comparing vehicle software mirror image data with a virus template library when the vehicle software mirror image data is received; when the comparison result is inconsistent, judging whether viruses exist in the vehicle software mirror image data or not; when the virus exists, an active confrontation mode is adopted to attack a source server of the virus so as to block a virus transmission source; when the virus is an unknown virus, acquiring feature information of the unknown virus; and updating a virus template library according to the feature information of the unknown virus. According to the scheme provided by the invention, when the virus is found, an active confrontation mode is adopted to attack the virus source server, so that the propagation path of the virus is effectively blocked, and the large-scale diffusion of the virus is prevented, thereby reducing the harm range of the virus and improving the network security.

The invention relates to a system (400) for carrying out a LAMP amplification and for detecting the presence of DNA and / or RNA in a sample, the system consisting of the elements of a sample preparation device (200), a reaction vessel (100), and optionally a heating device (300). The system (400) allows a rapid detection of the presence of DNA and / or RNA in a sample, for example in order to detect the presence of a virus in the sample, using simple equipment.

This invention discloses a data security monitoring system and method based on multi-dimensional data, belonging to the field of data monitoring technology. The multi-dimensional data security monitoring system includes a receiving module, a virus checking module, a security assessment module, a classification module, a data size security assessment module, a pre-storage module, and a storage module. The classification module classifies the multi-dimensional data received by the receiving module. The security assessment module performs security assessments on the data received by the receiving module. The virus checking module monitors for viruses present in the data. This invention enables the classification module to categorize the multi-dimensional data received by the receiving module, and the security assessment module marks software data as unknown and generates a first unknown marker signal, thereby facilitating virus checks on the data by category. This avoids excessive data processing by checking all data while ensuring data security.