34results about How to "Irreversible damage" patented technology

The invention discloses a green restoration method of organic contaminated soil. The green restoration method is used for the technical fields of organic contaminated soil restoration and waste recycling. The green restoration method is different from a conventional charcoal adsorption soil organic contaminant restoration method in that environmentally-persistent free radicals with oxidative activity on the surface of hydrothermal charcoal and H2O2 carry out heterogeneous catalysis degradation on soil organic contaminants. Under the condition of normal pressure and temperature, the organic contaminated soil, the hydrothermal charcoal and H2O2 are mixed to be uniform according to the mass ratio of the organic contaminated soil to the hydrothermal charcoal of 5:1 to 20:1 and the solid-to-liquid ratio of the organic contaminated soil to H2O2 of 2:1 to 10:1 to synergistically remove the organic contaminants in the soil. The contaminant removal rate in the organic contaminated soil is increased, meanwhile, no contaminant precipitation or secondary pollution is generated in a reaction system, and no soil structure or ingredients are damaged inevitably. The method is simple in process, economical, efficient and environmentally friendly, and has great application potential in the field of organic contaminated soil restoration.

An ESD protection circuit includes a first diode element, a second diode element, a first clamping circuit, a second clamping circuit, and a protection circuit. The first diode element is coupled between a first power node and an input node, wherein the input node is coupled with an internal circuit. The second diode element is coupled between a second power node and the input node. The first clamping circuit is coupled between the first power node and the second power node. The second clamping circuit is coupled between the second power node and the input node. The protection circuit is coupled between the first power node and the second power node, and configured to transmit a current corresponding to an ESD event to a grounded capacitor.

The invention provides a serum-free separating and culturing method for a sheep embryo stem cell, comprising the following steps of: removing a zona pellucida of sheep blastula cultured in vitro with a Tyrode's Solution and then inoculating the sheep blastula to a serum-free culture solution of the sheep embryo stem cell and fixing by using a needle head; placing under the conditions that the temperature is 38.6DEG C and the saturated humidity is 5 percent CO2 for culturing; during the culturing, replacing the culture solution in a half quantity every 48 hours with the pH value of 6.8-7.2 and primarily culturing for 7-9 days; and carrying out the transfer culture once according to the ratio of 1:2-1:4 by adopting a conventional mechanical method, that is to say, transferring the sheep embryo stem cell cultured in vitro to the 16th generation. The serum-free culture solution of the sheep embryo stem cell is prepared from D-MEM/F-12+80ng/mL bFGF+3muMCHIR 99021+10mu L/mL N2+20mu L/mL B27+10mu L/mL NEAA+2mM L-Glutamine+0.2mM beta-Mercaptoethanol. Bared embryos are fixed at the bottom of a culture dish by using a No.32 needle head so as to avoid the damage to the cells in the blastula, and a baked embryo trophocyte is stripped off. The preferable inoculating amount of the baked embryos is 45-60/groups. The method can ensure that the formation rate of primary colony of sheep embryo stem cells is improved to 33 percent (14/42).

The invention discloses a fluorescent carbon quantum dot based on biomass. The fluorescent carbon quantum dot is characterized in that raw materials of the fluorescent carbon quantum dot comprise thebiomass, and the biomass is selected from one or more of phaeophytin, arbutin and chestnut peptide. The fluorescent carbon quantum dot has an excitation peak in a near-infrared region, emits red fluorescence, can effectively generate singlet oxygen and overtemperature, and can be well used for near-infrared imaging and photodynamic and photothermal therapy. The invention also discloses a preparation method and application of the fluorescent carbon quantum dot.

The invention discloses a preparation method of a high-performance biodegradable food packaging film. The method comprises the following steps that a cross-linking agent is adopted for modifying collagen, the modified collagen, sodium alginate, carboxymethylcellulose, modified starch and glycerin are mixed under a certain condition, and a pasty mixed solution is obtained; the pasty mixed solution is subjected to microwave treatment and irradiation, and then bubbles are removed; the pasty mixed solution is subjected to molding and drying in a mold, and the high-performance biodegradable food packaging film is obtained. The prepared food packaging film is good in biodegradability, excellent in thermal stability, good in mechanical property and low in preparation cost.

The invention provides a method of detecting dispersion stability of battery paste. The method comprises the steps of 1, adding battery paste into a container; 2, vibrating the container with the batter paste on a vibrating device; 3, after vibrating, testing fineness for upper paste and lower paste, evaluating dispersion stability of the paste according a fineness ratio of the upper paste to thelower paste, confirming that the dispersion stability of the paste is excellent if the fineness ratio of the upper paste to the lower past is higher than 0.9, confirming that the dispersion stabilityof the paste is good if the fineness ratio of the upper paste to the lower paste is between 0.7 and 0.9, and confirming that the dispersion stability of the paste is poor if the fineness ratio of theupper paste to the lower paste is less than 0.7. The method is low in time consumption and cost, and no damage due to vibration is caused to the paste.

The invention relates to a method, device (100) and system (200) for the detection and quantification of variation in eye damage caused by blue and violet light in the visible spectrum, comprising steps of: detecting incident radiation on an individual's visual system; calculating the incident radiation inside the range from 380 to 500 nm; establishing at least one threshold for incident radiation within said range; detecting if at least one threshold established for this range has been exceeded; warning of the exceedance of at least one threshold; measuring the time of exposure to the incident radiation; and inferring the effect of the incident radiation in the individual's different eye structures, and warning of said effect.

The invention relates to a wastewater zero-discharge process for making acid through purifying activated charcoal fume and a system. Acid making complicated sewage is treated sequentially through steps 1) to 4), and the treated water serves as a substitute of industrial new water and is applied to sintering mixing or steel mill cinder flushing. Gases generated in the steps 1) and 2) can be subjected to secondary recycling. Under the action of an acidic dewatering device, sludge generated by an acidic precipitating device will be recovered, and generated acidic filter liquor is recovered through a fifth pipeline. Generated deacidified sludge is recovered through a sixth pipeline. According to the process and the system, processing technologies can be reasonably utilized in view of water body characteristics, the treatment efficiency is increased, the stability of operation is improved, the investment and operating costs are reduced, the difficulty of operating maintenance is lowered, the pollution to air is lowered, and distribution and utilization can be carried out reasonably; and meanwhile, exhaust gases and wastes are recovered and eliminated in the process, so that the production cost can be reduced, and requirements of environmental standards are met.

The invention relates to a composite hydrogel-based self-water-supply type photo-thermal water evaporation device. Porous molybdenum disulfide MoS2 nano particles are intercalated between graphene through a one-step chemical reduction reaction. The efficient water evaporation rate of 3.2 kg m<-2>h<-1> can be achieved under illumination of 0.9 kW m<-2> and is far higher than that of an existing photo-thermal interface water evaporation system of the same type, and the device has bacterial biological pollution resistance and good stability. The provided photo-thermal interface water evaporation system is expected to realize efficient seawater desalination, and provides a solution for sustainable clean water production.

The invention refers to the technical field of disposable vacuum blood sampling, in particular to a self-destructive mechanism of an axial filling adhesive type disposable blood sampling syringe needle. The self-destructive mechanism is composed of a guide cylinder, an upper guide curved face, a positioning hole, a lower guide curved face, a locking pipe, an intubation tube, a piston, an annular bulge, a sac, 502 glue water, a sealing fin, a glue outlet and an annular hollow. The space in the guide cylinder comprises the upper guide curved face, the positioning hole and the lower guide curved face; conical spaces corresponding to the upper guide curved face and the lower guide curved face are in communication with the positioning hole. The bottom part of the locking pipe is bonded with the sac made of polyethylene plastic film. According to the self-destructive mechanism provided by the invention, the inner part of the syringe needle can be blocked, so that the syringe needle is irreversibly destructed; and therefore, the reutilization of the disposable syringe needle by criminals is radically eliminated.

The invention discloses a water surface floating object automatic identifying, salvaging and cleaning device based on water environment treatment. The water surface floating object automatic identifying, salvaging and cleaning device comprises a floating raft and is characterized in that a drifting pipe is fixedly connected to the upper part of the floating raft, a drifting bottle is arranged in the drifting pipe, a filter screen is arranged below the floating raft, a duckweed filter ball is arranged below the filter screen, and an inflation assembly is arranged on one side of the floating raft; the inflation assembly comprises a fixed ball, a turnover ball is fixedly connected to one side of the fixed ball, the fixed ball and the turnover ball are both oval, the fixed ball is vertically installed in the inflation assembly, the turnover ball is vertically installed in the inflation assembly, and the fixed ball and the turnover ball are of a matched structure; and a dynamic rod is arranged between the inflation assembly and the floating raft, the inflation assembly is connected with the duckweed filtering ball through a pipeline, and a central pivot rod is fixedly connected to the interior of the filter screen. The water surface floating object automatic identifying, salvaging and cleaning device based on the water environment treatment has the advantages of high practicability and automatic garbage type identification.

A method for detecting analytes in flow rate analysis and chromatography is described. The method comprises the following steps: a) providing one or more light sources, an optical wave guide, a container containing a specimen with one or more analytes, and one or more detectors; b) exposing the container containing the specimen to light of one or various, defined wavelengths and/or wavelength ranges; and c) detecting the resulting light waves by one or more detectors after the specimen container is exposed to light of one or various defined wavelengths and/or wavelength ranges, wherein the specimen is irradiated by transferring the light waves through an non-flexible or non-flexibly arranged optical wave guide before the light waves enter the specimen container. The non-flexible or non-flexibly arranged optical wave guide is not susceptible to interference and permits selective irradiation with one or more wavelengths sequentially or simultaneously without requiring much time.

The invention relates to a water temperature detection method and system based on a temperature sensor technology. The system comprises a single-chip microcomputer and a reaction kettle, an output port of the single-chip microcomputer is electrically connected with a first control module and a second control module respectively, an output port of the first control module is electrically connected with an electric heating tube, an output port of the second control module is electrically connected with a cooling fan. A temperature sensor is mounted in the reaction kettle through a screw, an output port of the temperature sensor is electrically connected with an A/D conversion module, and an output port of the A/D conversion module is electrically connected with a signal amplification module. According to the invention, zero-crossing detection of power frequency voltage can be realized through a zero-crossing control circuit, a pulse signal is given, and the number of silicon controlled rectifier zero-crossing pulses is controlled by the single-chip microcomputer, so that radio frequency interference and electric frequency pollution are effectively eliminated, and temperature control is more accurate.

The invention relates to a bone nail implanting and positioning device in hip joint surgery, belongs to the technical field of medical instruments, and provides a bone nail implanting and positioning device in hip joint surgery, which comprises a positioning mechanism, a connecting mechanism and a supporting mechanism, the two ends of the connecting mechanism are connected with a second binding belt and a fourth binding belt correspondingly, the two sides of the connecting mechanism are sleeved with the two supporting mechanisms correspondingly, and the two supporting mechanisms are provided with a first binding belt and a third binding belt correspondingly. The two ends of the connecting mechanism and the two ends of the supporting mechanism are fixed to the waist and the thighs of a patient respectively through the first binding belt, the second binding belt, the third binding belt and the fourth binding belt, so that the connecting mechanism and the positioning mechanism directly face the hip joint positions of the patient and are fixed, and influences are not generated along with swinging of the legs of the patient; the accuracy of an operation position is conveniently ensured, and injury to a patient is avoided.

The invention discloses a water-based all-purpose adhesive and a preparation method thereof. The water-based all-purpose adhesive comprises the following components: a multi-component copolymerized acrylic emulsion, a VAE emulsion, a rosin emulsion, a polyurethane emulsion, a defoaming agent, a wetting agent, a thickening agent and a flame retardant. The preparation method comprises the following steps: firstly, adding 35% of polybasic copolymerized acrylic emulsion into a stirring kettle, and stirring; then adding 25% VAE emulsion into the stirring kettle, and continuously stirring; adding 25% of rosin emulsion into the stirring kettle, and continuously stirring; adding 15% of polyurethane emulsion into the stirring kettle, and continuously stirring; finally, 0.2% of the defoaming agent prepared in advance is added according to the total amount and continuously stirred, then 0.15% of the wetting agent is added and continuously stirred, then 0.3% of the thickening agent is added and stirred to be completely and uniformly mixed, finally 0.15% of the flame retardant is added and uniformly stirred, and the coating can be obtained. The coating has almost zero emission of VOC, is non-toxic, non-combustible and non-explosive and is easy to construct.

The invention discloses a method for cutting DNA based on flax cyclopeptide A, and belongs to the technical field of biology. The flax cyclopeptide A is used for cutting DNA, the cutting efficiency can reach 100% under the proper condition, free radical cutting is adopted, irreversible damage to the DNA can be caused, and the flax cyclopeptide A has certain guiding significance in the aspects of exploring the effect of plant cyclopeptide and the DNA, designing a new DNA structure probe and the like. The flax cyclopeptide A can be used as a new anti-tumor drug in the field of drug research anddevelopment.