980 results about "Bacterial virus" patented technology

Methods are disclosed for the capture, detection, separation, isolation and quantification of contaminants in a starting material. Also disclosed are competitive assay methods for the detection and quantification of contaminants in a starting material. Kits for use with the method are disclosed as well. A system for capturing, separating and/or concentrating contaminants from a material is also presented. The system captures, separates and/or concentrates contaminants such as bacteria, viruses, other microorganisms, and/or larger items, such as insects, from a variety of materials, such as food, and environmental and clinical materials. In general, the system uses a rotating magnetic field to mix the material with magnetic particles to capture the target contaminants, and a fixed magnetic field to separate and concentrate the captured target contaminants.

The invention discloses a blood metagenome sequencing data analysis method and device and an application thereof. The blood metagenome sequencing data analysis method comprises a data quality controlstatistics and splitting step, a humanized sequence removal step, a plasmid sequence removal and internal reference comparison step, a pathogen genome sequence library comparison step and a pathogen parameter annotation step. The invention provides a blood flow infection detection device based on a blood metagenome sequencing data analysis method. According to the method and device provided by theinvention, the free nucleic acid sequences in blood are detected through a metagenome sequencing method, a bioinformatics analysis method is combined, more than 8,000 pathogenic microorganisms such as bacteria, viruses, fungi and parasites possibly existing in a blood flow infection patient body are detected at a time, and a detection result can be obtained within 24 hours at the soonest. The speed, the sensitivity, the accuracy and the efficiency of blood flow infection detection are greatly improved.

The invention relates to a process for preparing antiviral or antibiotic essence for the prevention and treatment of bacterial and virus mixed infectious diseases of livestock, fowl and aquatic animals, which consists of mixing Chinese herbs of Bupleurum root, rhubarb horsetails, Coptis chinensis, baikal skullcap root, Chinese angelica root, clerodendroa cyrtophyllum and cordate houttuynia, lixiviating with 80-90% alcoholic solution, charging one or more antiviral or antibiotic elements.

The invention provides a method for controlling the password input based on eye-gaze tracking, specifically comprising the following steps of: (1) preprocessing face images and extracting eye characteristic parameters: detecting a face according to face structure characteristics, and extracting the eye characteristic parameters in a face area according with the face structure characteristics; (2)estimating the current fixation point position: realizing the estimation from the eye characteristic parameters to the current fixation point position by using double light source eye-gaze tracking based on similar triangles; and (3) controlling a password input operation according to the fixation point position: controlling the password input operation by utilizing a time threshold and sound feedback according to the fixation point position. The invention can effectively prevent user password from being stolen, avoids the cross infection among different individuals by residual bacterial virus on a keyboard because the password is not inputted through the keyboard and has the characteristics of simpleness, convenience and higher safety.

The invention relates to an air purifying material and a preparation method thereof. The air purifying material is formed by mixing 30 to 50 percent of polar tourmaline powder, 10 to 30 percent of carbon nanometer tubes, 25 to 35 percent of zeolite powder and 15 to 30 percent of metal nanometer powder encapsulated with titanium dioxide. By utilizing the zeolite and the metal nanometer powder encapsulated with titanium dioxide which have the photocatalitic action and can enhance the dispersing property of tourmaline negative ions in a local area and utilizing the carbon nanometer tubes which have large specific surface and strong absorbing capacity, thereby the generated air negative ions have high concentration. The air purifying material can effectively absorb harmful gases, air foreign flavor and smoke, fully plays the role of negative oxygen ions in the restrain and the elimination of bacterial viruses, and can be widely applied to purifying the indoor air and improving the air quality of rooms and automobiles.

An ionic oxidation refreshing system for refreshing odorized items, comprising an enclosure to contact the odorized items; an ionizing stage mechanism that produces an ionized ozone gas mixture inside of the enclosure, killing germs, including odor-causing bacteria, viruses, molds, and fungus; and a filtering stage mechanism that neutralizes and filters out any toxic by-products including one or more of ozone, nitric acid, aldehydes, and VOCs resulting from surface oxidation of the odorized items by the ionized ozone gas mixture.

The invention relates to a processing method for fermenting straws in a dry-process and wet-process combined way, which can realize dry-process and wet-process combined fermentation treatment of straw garbage through a straw pre-softening step, a solid-liquid primary fermentation step, a dry-process aerobic digestion and decomposition step, a wet-process anaerobic digestion step and a desulfurization and drying step. By means of the method disclosed by the invention, kitchen garbage is subjected to resource treatment safely and effectively; the harmless treatment is realized; the treatment process is free from pollution; bacterial virus can be prevented from spreading; and the method is an environment-friendly straw garbage treatment method, has good economical efficiency and is capable of realizing virtuous ecological cycle.

The invention relates to a relaxation time immunosensing analysis method based on magnetic separation. The method comprises the following steps: selecting two magnetic beads (one can be quickly separated and the other cannot be separated) different in saturated magnetization intensity and remarkably different in separation speed in the same magnetic field, so that the magnetic beads can be separated in the magnetic field; coupling the magnetic beads to an antibody used for identifying different sites of the same target object respectively to prepare immunomagnetic beads; producing an immunoreaction of the immunomagnetic beads and a to-be-detected sample; performing magnetic separation on a mixed system, measuring transverse relaxation time for supernatant liquor subjected to magnetic separation, and determining the concentration of biomacromolecules in the to-be-detected sample according to change of the transverse relaxation time. The immunomagnetic beads different in saturated magnetization intensity are different in separation speed in the same magnetic field, the magnetic separation is combined with magnetic relaxation time analysis, the reaction time only needs 30 minutes, and the method can be used for quickly detecting bacteria, viruses and proteins and has a very good application prospect in an aspect of biomarker detection.

A fluid cleaning medium for removing chlorine, organic and inorganic pollutants, heavy metals, ions, particles and bacteria from fluid is composed of a pre-filtering layer, an immobilized layer and an adsorptive filter layer. It features large effective area, low pressure loss and compact structure. Its preparing process is also disclosed.

The invention provides compositions and methods for treating or preventing the spread of infectious disease through topical or cutaneous contact with a formulation or article containing an organotellurium compound, or an inorganic or organic selenium compound, or formulation thereof, capable of generating superoxide radicals in the presence of an agent of infectious disease such as bacteria, viruses, fungi and protozoa.

The invention discloses a high-dust holding capacity and high-efficiency composite electrostatic air purification device, which sequentially comprises a primary filtering screen, a carbon brush charge region, an electrostatic dust removal region, an air filter and a dust hopper, wherein a differential pressure transducer is arranged at the two ends of the air filter; a material level sensor is arranged in the dust hopper. According to the composite electrostatic air purification device, charged particles are collected by the electrostatic dust removal region, so that the air filter is protected, and the service life of the air filter is prolonged; the dust holding capacity of the air filter is reduced, pressure drop is reduced, and labor is saved; the exposure time of air, dust and particles on the air filter is reduced, and secondary pollution to the air caused by gas pollutants and bacterial viruses in a particle filtering process is reduced; the filtering efficiency of the electrostatic dust removal region is insensitive to blast volume changes, and the influence of proper increase of the blast volume to the overall dust removal efficiency of the device is limited, so that the purification device is suitable for blast volume variable buildings.

The invention discloses an antiepidemic treatment method and system. The method comprises the following steps that S1, the whole bodies of personnel entering a public place are disinfected through whole-body disinfectant treatment and air shower treatment; and S2, indoor environment air is forced to be internally circulated through one or the combination of a top air convection system, a middle air circulating system, a movable air treatment system and an air conditioner air internal circulating system, and filtering and disinfecting are carried out. The system comprises a front-mounted antiepidemic channel arranged on an entrance of the public place and an air circulating system arranged in the indoor environment of the public place. The front-mounted antiepidemic channel is one or the combination of a whole-body disinfecting room and an air shower room, and the air circulating system is one of a top air convection device, a middle air circulating device, a movable air treatment device and an air conditioner air treatment device or the combination of more of the top air convection device, the middle air circulating device, the movable air treatment device and the air conditioner air treatment device. According to the antiepidemic treatment method and system, the probability that bacterial viruses are spread in the public place can be greatly reduced.

A device for the detection of micro particles that can be marked by probes or antibodies capable of being detected by radiation has a filter, a supply system, and a detection system. Fluid to be examined is passed over a filter to filter out the micro particles and to perform the marking steps by supplying corresponding marking substances to the filter.

The invention relates to a multifunctional cleaning robot for ground washing and disinfecting. The multifunctional cleaning robot comprises: a robot bottom plate and a main frame; and an intelligent ground washing device used for sensing ground pressure and washing the ground; the autonomous disinfecting device that comprises a liquid storage tank, a water pump and an atomizing nozzle which are sequentially connected through a pipeline, and is used for realizing airspace spraying of liquid; the ground walking device that comprises a crawler chassis, crawler wheels installed on the crawler chassis, a crawler arranged on the outer sides of the crawler wheels in a sleeving mode and a plurality of swing assemblies arranged side by side to achieve swing walking; an energy supply and storage device that is used for supplying power to the whole robot; and the monitoring control device that is used for realizing automatic control of ground washing, disinfection and walking. Compared with the prior art, the invention combines the functions of ground cleaning, space disinfection and sterilization, independent and intelligent execution of intelligent ground washing, automatic disinfection andthe like, and realizes self-adaptive environment cleaning on a polluted area in a targeted manner, so that propagation and diffusion of pollutants such as bacteria and viruses are effectively avoided, and the self-adaptive environment cleaning system undertakes heavy environment cleaning work.

Belonging to the technical field of boar semen dilution, the invention relates to a boar antiviral long-acting semen diluent formula and a preparation method. The boar semen diluent comprises: alpha-D-glucopyranose powder, fructose, trisodium citrate dihydrate, ethylenediamine tetraacetic acid disodium, sodium bicarbonate, polyvinyl alcohol, trishydroxymethylaminomethane, inositol, vitamin C, arginine, a radix isatidis injection, a 5% ceftiofur sodium injection, and a 5% Ribavirin injection. The preparation method includes: dissolving all the components in distilled water, mixing the components evenly, and conducting sterilization to obtain the boar semen diluents. The formula involves rich nutrients, antibacterial Chinese and western medicine components and antibacterial components, thus ensuring normal sperm metabolism. After certain period of time at the lower limit of storage temperature, the effects of nutrition and sperm shock prevention can be realized, and the invasion of external bacterial viruses in an artificial insemination process can be avoided.

Human and animal infections are treated using extracorporeal acoustic pressure shock waves that destroy harmful pathogens as bacteria, viruses, funguses and other micro-organisms to disinfect infected tissue.

The invention discloses an efficient medical instrument cleaning and disinfection method and a disinfection device. The efficient medical instrument cleaning and disinfection method comprises the following steps of S1, placing a to-be-cleaned medical instrument on a medical instrument fixing and placing mechanism, and spraying and washing the to-be-cleaned medical instrument with sterile water; S2, soaking the medical instrument washed in the step S1 in a disinfectant for washing through ultrasonic waves; S3, washing with sterile water after soaking is finished; S4, atomizing a biological enzyme cleaning agent after washing in the step S3, and placing the medical instrument in the atomized biological enzyme cleaning agent; S5, carrying out drying and disinfection on the medical instrumentthrough plasma gas; and S6, carrying out irradiation treatment by using a low-voltage high-intensity ultraviolet lamp. According to the method, substances such as bacteria, virus, blood, protein, saccharides and the like on the medical instrument are fully degraded, and complete cleaning and disinfection of the medical instrument are realized; and pollutants degraded in the disinfectant are degraded again in the disinfectant soaking process, and pollution to the environment due to discharge of disinfection waste liquid is avoided.

The invention relates to an antibacterial and antiviral hybrid peptide as well as a preparation method and application thereof. An amino acid sequence and a nucleotide sequence of the antibacterial and antiviral hybrid peptide are as shown in SEQ ID No. 1 and 2. A gene for coding the antibacterial and antiviral hybrid peptide is cloned to an expression vector pPICZ[alpha]A to obtain a recombinant vector, then Pichia pastoris is converted, methyl alcohol is used for inducing expression, and an expression product is purified to obtain the target antibacterial antiviral hybrid peptide. The antibacterial and antiviral hybrid peptide can prevent and kill various bacteria and viruses, has low probability of resistance, and therefore, can serve as an ideal antibiotic substituent, a people and livestock biological antibacterial and antiviral medicine, a feed additive, a preservative, a sanitizer or the like.

The invention discloses a polypeptide that can be specifically combined with lung cancer cells and a preparation method and application thereof. The polypeptide specifically combined with lung cancer cells shows peptide library reducing screening by a bacterial virus so as to obtain bacterial virus clone specifically with lung cancer; the bacterial virus clone having stronger affinity with lung cancer is identified by Elisa and an immunohistochemical method; and sequencing is sent so as to obtain a 12 polypeptide, and the amino acid sequence is shown as SEQ ID NO: 1. The 12 polypeptide screened by the invention not only has the advantages of traditional antibody molecule but also has small molecular weight, strong penetrating power and easy arriving to tumor tissue; the 12 polypeptide has good tumor targeting effect and more sensibility of tumor diagnosis, and can be used for preparing a kit for tumor diagnosis and drug for curing tumors.

The invention relates to a complexly-formulated quaternary ammonium salt disinfectant. The complexly-formulated quaternary ammonium salt disinfectant is prepared from the following ingredients: N,N-bis(3-amino propyl) dodecylamine used as a main ingredient of the antibacterial agent, didecyldimethylammonium chloride (DDDMAC) with strong antibacterial effect, a synergist, a stabilizing agent, a pH regulator, an antioxidant and a cosolvent; the complexly-formulated quaternary ammonium salt disinfectant is mainly characterized in that novel, stable and high-efficiency quaternary ammonium salt is adopted for achieving disinfectant and antibacterial effects; the complexly-formulated quaternary ammonium salt disinfectant can rapidly kill fungus, saccharomycetes, colon bacillus, pseudomonas aeruginosa, Staphylococcus aureus, Tritirachium album, virus and other microorganisms in a highly-efficiency broad-spectrum manner; the complexly-formulated quaternary ammonium salt disinfectant has the advantages of having wide application range, good disinfection effect, no toxic action, no carcinogenic effect, no sensitization, no mutagenesis, no pesticide resistance formation, no irritation, no corrosivity, no foreign smell and no flammability, having capability of effectively killing harmful microorganisms such as bacteria, viruses and fungus, which are harm to higher organisms in all life stages (including a reproduction period and a juvenile stage), having capability of natural degradation in soil, no secondary pollution, having stable performance, having less possibility of losing efficacy due to light, heat and the like, and having economical and practical effects, can achieve rapid high-efficiency broad-spectrum disinfection effect compared with similar products, and has low price.

The invention discloses a special sterilization treatment device of air duct suitable for multiple air ducts, comprising ultraviolet pipe sterilizer and installing support fixed with air duct. The installing support is set in the air duct on the flow direction of air duct. Said ultraviolet pipe sterilizers are set at two ends of said installing support by the installing structure of sterilizer. The length direction of ultraviolet pipe adopted by the invention is the same with the flow direction in the air duct and is set at the center position of air duct. The length direction is near the main flow direction. The available time when air flow passes through the special sterilization treatment device of air duct is long and bacterial virus can be killed in effect. And composite ultraviolet lamp pipe is used to carry out oxidation for formaldehyde, ammonia and benzene so on in room to realize the treatment for volatile organic compound in room.