7results about How to "Lower detection rate" patented technology

The invention discloses an oligopeptide for treating neonatal bacterial meningitis and a preparation method of the oligopeptide, and belongs to the technical field of biological medicines. The invention successfully designs and prepares small molecular mimic peptides capable of effectively blocking escherichia coli from invading into the brain based on a lactam cyclization technology, the small molecular mimic peptides are named as EC-MP-1 and EC-MP-2, and animal level research proves that the mimic peptides disclosed by the invention can inhibit the invasion of E44 escherichia coli to HBMEC; cell and molecular level researches prove that the mimic peptide disclosed by the invention can play an effective therapeutic role. A new thought is provided for prevention and treatment of neonatal meningitis, and reliable scientific data is accumulated for subsequent development and clinical application of micromolecule polypeptide drugs.

The present application relates to the technical field of solid polymer treatment, and particularly relates to a treatment method and a treatment system for volatile organic compounds in solid polymers, and a method for granulating solid polymers, which comprises: blowing a mixed gas containing gaseous light hydrocarbons and nitrogen through solid polymers containing volatile organic compounds to perform degassing. The treatment method is safe and efficient, can effectively reduce the content of volatile organic compounds in the solid polymers, and improves the environmental protection of solid polymer production and the quality of the solid polymers.

The invention provides a ceramic substrate defect intelligent classification method based on central Gaussian kernel distribution. The method comprises the following steps: constructing a ceramic substrate defect data set; acquiring a defect cutting image and a Gaussian kernel distribution identification image corresponding to the defect cutting image; building and training a ceramic substrate defect intelligent classification network model; evaluating a ceramic substrate defect intelligent classification network model; and carrying out defect classification on the ceramic substrate defective products. According to the ceramic substrate defect intelligent classification method based on central Gaussian kernel distribution, defect images detected by a 2D visual detection algorithm are preprocessed, the ceramic substrate defect intelligent classification network model is established, and different Gaussian kernel distributions are used as defect image feature characterization, so that the defect classification accuracy is effectively improved, and the defect classification efficiency is improved. The detection rate of interference defects is reduced, and the quality safety of the ceramic substrate is improved.

The application discloses a recombinant herpesvirus of turkeys co-expressing classic strains and variant strains of IBDV VP2 and a construction method and application thereof, and belongs to the field of veterinary biological technology. The recombinant virus has good genetic stability, and has a consistent replication rate with HVT vaccine viruses in vitro. When used as a vaccine, 1-day-old chicks can be clinically protected against vvIBDV and nVarIBDV at 100% after single immunization, can induce the body to produce high-titer specific antibodies, protect the immune organs of chickens from virus invasion, and has a broad industrial application prospect in the preparation of IBDV multivalent vaccines.

The embodiments of the present disclosure disclose a facial image detection method, device, electronic device and computer-readable medium. A specific implementation of the method includes: controlling a drone to capture images to obtain pedestrian images; using a sliding window to perform region traversal on the pedestrian image to obtain a pedestrian detection image; determining the directional gradient histogram features of the region selected by multiple initial candidate frames included in the pedestrian detection image to obtain a pedestrian feature image; using a support vector machine to perform classification processing on multiple histogram features to obtain a classification result; performing non-maximum suppression processing on the pedestrian feature image to obtain an image to be segmented; performing image segmentation processing according to the target candidate frame included in the image to be segmented to obtain a target pedestrian image; inputting the target pedestrian image into a pre-trained face detection model to obtain the location information of the face area. This implementation can effectively avoid missed detection or false detection and improve the detection rate of facial images.

The invention relates to the technical field of positioning devices, in particular to a positioning device for prostate puncture biopsy, comprising: a prostate puncture positioning mechanism comprising a liftable moving frame; the positioning adjusting mechanism is fixed at the top of the liftable moving frame and is used for positioning a puncture position; the puncture mechanism is fixed in the positioning and adjusting mechanism and is used for pushing a puncture needle to perform extraction; the sample storage mechanism is fixed to the top of the positioning adjusting mechanism and used for storing samples. In the invention, the positioning adjusting mechanism can drive the puncture gun to adjust the position according to the determined puncture position, so that the positioning accuracy is effectively improved, and the situation that some tumors with the diameter of less than 5mm are not in grid gaps due to the use of a targeted positioner and are likely to miss lesion areas in the grid type puncture process is avoided. Therefore, the detection rate of diseases is reduced.

This invention discloses a liquid-phase probe-targeted capture library construction method and kit for enteroviruses, belonging to the field of virus detection technology. This invention combines targeted enrichment with high-throughput sequencing, featuring broad coverage, high flexibility, high sensitivity, and high specificity, enabling multi-dimensional information output including quantitative, qualitative, and in-depth analysis. Through the probe-targeted capture "enrichment-screening" mechanism, this invention reduces probe redundancy design, minimizes background nucleic acid interference from intestinal flora, exhibits excellent adaptability to complex samples, and eliminates the need for complex sample pretreatment, making it suitable for large-scale epidemiological detection.