94results about How to "Shorten survival time" patented technology

The invention relates to a method used for saving node energy in a delay tolerant network and an intermittent connection network, belonging to the field of network communication technique. The method comprises the steps as follows: a source node queries a node neighbor list; if no destination node information exists, the message is temporarily memorized in a node buffer; the non-empty nodes in the buffer periodically send exploration information which is used to exchange a message list and a message delivery acknowledgement list; when the node sending the exploration information receives a return information, the buffer is actively maintained according to the message delivery acknowledgement list carried in the return information and a message is sent by the node; after an intermediate node successfully transmits the message to the destination node, the node adds corresponding records into the message delivery acknowledgement list memorized locally and deletes the message from the buffer. The method can effectively reduce the quantity of the redundant nodes, improves the performance of the whole network and prolongs the life period.

The invention relates to a method for the host selection and address configuration manner switchover of an IPv6 (Internet Protocol version 6) network. According to the method, a Control flag and a Single flag which are used for normalizing and flagging the host selection and the address configuration manner switchover are additionally arranged in an RA (Router Advertisements) message of a ND (Neighbor Discovery) protocol, and then, the following operations are executed: a router sets the Control and Single flags and other fields; the router regularly sends the RA message to a host on an IPv6 link or sends the RA message to the IPv6 link after an RS (Request) is received; after the RA message is received, the host parses the Control and Single flags and records the Control and Single flags in status bits; the host decides to configure an IPv6 address by using an SLAAC (Stateless Address Auto-Configuration) mechanism or a DHCPv6 (Dynamic Host Configuration Protocol for IPv6) according to the selection criteria for a host address configuration manner set by the Control and Single flags; and if the host already configures the IPv6 address by using certain manner, the address configuration manner set by the flags is switched to according to the criteria. The method has the advantages that the demands that the host configures the IPv6 address by using the two address configuration manners in a coordinating manner can be met, and the requirements on network address management and network renumbering can also be met.

The invention concerns the use of certain compounds related to fatty acids to control nematodes that infest plants or the situs of plants. Nematodes parasitizing animals can also be controlled using the methods and composition of this invention. The useful compounds are inhibitors of nematode delta-12 fatty acid desaturases and can be, for example, from C16 to C20 in length. A feature of these compounds is that their inhibitory effect on the activity of a nematode delta-12 desaturase, or on the viability or fecundity of a nematode, is smaller in the presence of the product of a delta-12 fatty acid desaturase (e.g., linoleate) than in the presence of the substrate of the enzyme (e.g., oleate).

The invention discloses a directional air transmission device and an air disinfection system for prevention and control of pathogenic microorganisms in a sick area. The device comprises an air-cooledheat pump fresh air unit module, an ultraviolet disinfection module and an air purification pipe connected in sequence outside the sick area, also comprises a slot air supply outlet that is located above the side wall in the sick area, is connected to the air purification pipe and supplies air vertically downward, and also comprises an arc-shaped deflector located below the slot air supply outlet,wherein the arc-shaped deflector is recessed downward, the curved arc also comprises a negative pressure exhaust device located below the opposite wall of the side wall, and clean fresh air is outputthrough the slot air supply outlet to the arc-shaped deflector for deflecting and conveying, and then is filtered and discharged by the negative pressure exhaust device. Through the reasonable setting of the component structure, a directional clean air belt is formed and sent directly to the breathing area of personnel, which solves the unorganized spread and pollution of harmful gases and viruses in the hospital ward, and solves the problems that the HVAC system can accurately meet the standards when the air quality requirements change in the hospital, and that the ventilation effect is poor.

The invention discloses an ISP anomalous traffic detection method and a system, belonging to the field of information safety. The method comprises the following steps: capturing a network data packet; distinguishing a dangerous network data stream to determine a dangerous area; extracting the dangerous mode of the dangerous network data stream sent to the dangerous area; matching the dangerous mode with a memory detector, and meanwhile updating the antibody concentration of the memory detector; and according to the antibody concentration of the memory detector, determining the value at risk of the anomalous traffic of a network. The system of the invention comprises a network data packet acquisition module, a danger identification module, a dangerous area identification module, a network anomalous traffic mode identification module and a danger assessment module. The invention can solve the problems of low misinformation rate, poor self-adaption ability or no self-adaption ability. The invention also adopts the tolerance mechanism of the network anomalous traffic to cause the system to have the ability of detecting the anomalous network traffic caused by a large number of sudden normal network accesses.

The invention discloses an efficient composite fire extinguishing agent and a preparation method thereof, and relates to the technical field of firefighting. The fire extinguishing agent comprises, byweight, 28-36 parts of heptafluoropropane, 40-48 parts of 1,1,2,2,3,3,4-heptafluorocyclopentane, 4-8 parts of liquid nitrogen, 6-12 parts of ammonium bicarbonate, 1-5 parts of calcium carbonate, 1-3parts of potassium sulfate, 2-6 parts of talcum powder and 1-5 parts of diatomite. The fire extinguishing agent has the advantages of combination of the fire extinguishing advantages of several physical and chemical fire extinguishing agents, improved fire extinguishing efficiency, low corrosivity, long atmospheric survival time and low greenhouse effect potential value.

The invention provides a high-pollution building space exhaust disinfection and purification system and method. The system comprises a pollution region negative pressure metal ventilation pipe, and any position of the pollution region negative pressure metal ventilation pipe is communicated to the inlet end of a high-resistance ventilation pipeline with a heat insulation and insulation layer. Theoutlet end of the high-resistance ventilation pipeline with the heat insulation and insulation layer is connected to the inlet end of an outdoor negative pressure metal ventilation pipe through an electric backflow prevention valve, and the outlet end of the outdoor negative pressure metal ventilation pipe is connected to an extraction opening of an efficient frequency conversion draught fan. A plurality of virus killing devices are sequentially arranged at the rear end of the efficient variable-frequency draught fan. By means of the system and method, air possibly containing viruses in a high-pollution building space is subjected to high-temperature disinfection and sterilization through an electric heating pipeline, then the air subjected to high-temperature disinfection and sterilization is guided to an outdoor multi-virus disinfection and sterilization device through the negative pressure pipeline to conduct diversified thorough disinfection and sterilization on the introduced air,and the viruses in the air in the high-pollution building space can be thoroughly removed.

The invention belongs to the technical field of detection kits, and particularly relates to a kit for aided-diagnosis and prognostic evaluation on glioblastoma based on a gene CLCF1 and a use method thereof. The kit comprises a PCR (polymerase chain reaction) primer pair for amplifying the gene CLCF1 and a PCR primer pair for amplifying a housekeeping gene GAPDH. The kit has the advantages that the obvious difference of the gene CLCF1 in transcription expression levels of LGG (brain lower grade glioma) and GBM (glioblastoma multiforme) is found for the first time, the prognostic condition of apatient with the glioblastoma is well judged by the expression level of the gene CLCF1, and the gene CLCF1 can be used as the index for independently judging the prognostic condition of the glioblastoma after determining by Cox multi-factor regression analysis; after the expression condition of the transcription level of the gene CLCF1 is detected, the severity of the glioblastoma can be diagnosed, and the prognostic condition of the patient can be predicted.

The invention belongs to the technical field of air purification, and particularly discloses a filter screen taking a nanometer material as a filter. The filter screen comprises a felt type non-woven fabric and filter substances adhered to the felt type non-woven fabric, wherein a woody activated carbon powder is adsorbed on one side of the felt type non-woven fabric, while a nano-scale titanium dioxide powder is adsorbed on the other side of the non-woven fabric; and the felt type non-woven fabric is covered on the outer sides of the woody activated carbon powder and the titanium dioxide powder respectively and is in press-fit to form an integral filter screen. The nanometer material filter screen disclosed by the invention adopts the nano-scale titanium dioxide as a strong oxidant and a strong reducing agent, so that the filter screen can effectively isolate and kill hazardous substances and harmful bacteria, can shorten survival time of viruses in air, can be applied as an isolation material for sealing doors and windows in various places such as a hospital, a lab, and a dormitory, furthermore can be used as a biochemical isolation material, and has the advantages of light weight, convenience in installation and use, practicability in the effect and the like.

The invention relates to the technical field of make-up tools, and particularly discloses animal hair-like polyester filament cosmetic brush hair and a production process thereof. The animal hair-like polyester filament cosmetic brush hair is prepared from the following raw materials in parts by weight: 60-70 parts of polyester resin, 3-6 parts of nano pearl powder, 2-6 parts of titanium dioxide, 19-25 parts of an antibacterial agent and 1-2 parts of a lubricating agent; and the antibacterial agent is prepared from the following raw materials in parts by weight: 5-10 parts of polyester resin, 5-8 parts of a graphene oxide/silver compound, 2-3 parts of organic bentonite, 1-3 parts of chitosan oligosaccharide and 2-4 parts of nano bamboo charcoal powder. The preparation method comprises the steps of mixing, melt spinning, shredding, hair peak making and after-finishing. The antibacterial agent is added into the raw materials of the cosmetic brush hair, so that the antibacterial performance of the cosmetic brush hair is improved.

The invention discloses a soilless cultivation and seedling raising method for panicled fameflower. The soilless cultivation and seedling raising method for the panicled fameflower includes the following steps of 1 cutting processing, 2 nutritional pot preparation, 3 cutting management and 4 transplanting cultivation. The soilless cultivation and seedling raising method for the panicled fameflower simply and efficiently performs cutting propagation without transplanting cultivation, the survival time is shortened to be 3-4 days, a seedling raising period is short, the survival rate is 95-97%, the panicled fameflower is strong in resistance, vigorously grow and have thick and strong stems, lodging resistance and expanded roots, and edible parts are increased. Rooting liquid contains rich small molecules, is safe, non-toxic and high in utilization and absorption rate and promotes rooting. A cultivation matrix makes the panicled fameflower grow in a fixed mode, can absorb harmful substances in the process of adsorption and growth, is antibacterial and disinfectant, water-retaining, air-permeable, balanced in nutrition and high in absorption efficiency and controls sustained release of a fertilizer, and the planting cost is saved. Pesticides are not needed in the whole process, the soilless cultivation and seedling raising method is safe and environmentally friendly, does not cause pesticide residues and improves the panicled fameflower.

The invention discloses a biomass landfill management method which comprises a biomass landfill management system, wherein the biomass landfill management system comprises a computer, a plurality of data collection devices, a plurality of displayers, an input device and a printer. The data collection devices, the displayers, the input device and the printer are connected with the computer. Fixed gross of CO2 of photosynthesis of landfill plants of nations or areas is counted through the biomass landfill management system. Nations or areas with multiple landfill biomass can help nations or areas where tasks of greenhouse gas emission can not be finished, business of 'carbon emissions permit trading' can be promoted, and tasks of emission reduction are finished. An atmosphere greenhouse effect is relived step by step, glacier melting on at two poles is restrained, rising of a sea level is controlled, climate on the earth and biological diversity are maintained, and survival time of human beings on the earth is prolonged.

The invention relates to a lipstick with an antiviral effect. The lipstick contains an antiviral drug (remdesivir), and the content of the remdesivir in every 100g of the lipstick does not exceed 10g.After the lipstick is wiped on related parts, the propagation of viruses on exposed parts of the surface of a human body can be inhibited, the survival time of viruses is shortened, and the infectionrisk is reduced.