22 results about "Scavenger" patented technology

The invention provides a construction method and application of an SO2 gas sensor based on a room-temperature H2S removal agent, and belongs to the field of gas sensors, the device comprises an SO2 gas sensor and an H2S filter membrane, the H2S filter membrane is arranged at a gas inlet of the SO2 gas sensor, and the SO2 gas sensor can detect SO2 with different concentrations; the H2S filtering membrane adsorbs H2S molecules to reduce the interference of the H2S molecules on SO2 gas-sensitive detection, so that the detection selectivity and accuracy are improved. The invention aims to realize high-sensitivity and high-precision detection of SO2 in a H2S-containing mixed gas environment, and has the advantages of simplicity and convenience in operation, low cost, environmental friendliness, wide applicability and the like.

The invention relates to the technical field of water treatment, and discloses a solid color-changing scale remover which comprises a core layer and an outer layer, the core layer is wrapped in the outer layer, and the core layer is prepared from the following formula components in percentage by mass: 60%-75% of an acid scale remover, 4%-7% of a corrosion inhibitor, 0.5%-1% of a color-changing indicator, 15%-23% of an excipient and 2%-3% of a surfactant. The preparation method comprises the steps of raw material pretreatment, gradient mixing, wet granulation and double-layer tabletting. The preparation equipment comprises tabletting equipment, the tabletting equipment comprises a feeding device, and the feeding device comprises an outer feeding pipe, an inner feeding pipe, an outer opening and closing mechanism and an inner opening and closing mechanism. The invention provides a solid color-changing water scale scavenger as well as a preparation method and preparation equipment thereof, which can solve or at least alleviate the problems of poor detection limit, color difference, stability and anti-interference performance of the existing color-changing water scale scavenger.

The invention relates to a preparation method of a bird nest type silicon catcher. The bird nest type silicon catcher is prepared from the following raw materials: silicon dioxide powder with high specific surface area, pseudo-boehmite, alumina powder, sesbania powder and cellulose. The preparation method comprises the following steps: uniformly mixing silicon dioxide powder with a high specific surface area, pseudo-boehmite, alumina powder, sesbania powder and cellulose in a kneading machine, adding a mixed aqueous solution of nitric acid and citric acid, mixing the powder into mud, and carrying out pugging, molding, drying and roasting to obtain a bird nest type silicon trapping agent carrier; and then loading metals Mo and Ni by adopting an impregnation method, and drying and roasting to obtain the bird nest type silicon trapping agent. The silicon trapping agent prepared by the method has the characteristics of large pore volume and specific surface area, high metal dispersity, high water absorption, multiple edge active center sites and the like, and is suitable for silicon trapping treatment of silicon-containing oil products such as coker naphtha and coker dry gas.

Described herein are methods and materials for increasing the scavenging efficiency of hydrogen sulfide collected or produced in subterranean formations during wellbore environments. The methods can include first identifying a location that may include a concentration of production fluid that may contain high concentrations of H2S gas. The production fluid may be initially collected and tested to determine the concentration of H2S gas within the production fluid mixture. The production fluid, after testing, may then be treated, using in-line injection methods including a concentration of scavenging material to scavenge H2S gas from the production fluid and produce a cleaner gas after treatment.

A medical device (e.g., an analyte sensor) that may be implanted within a living animal (e.g., a human) and may be used to measure an analyte (e.g., glucose or oxygen) in a medium (e.g., interstitial fluid, blood, or intraperitoneal fluid) within the animal. The medical device may include a polymer covering at least a portion of a surface of the medical device and a plurality of reactive oxygen species (ROS) scavenger molecules covalently linked to the polymer (e.g., to reduce degradation of an analyte indicator including the polymer).

Provided is a method that detects a target substance contained in a sample with high sensitivity and reproducibly even in a low-concentration range. The problem is solved by a method for measuring a target substance contained in a sample, said method being characterized by comprising at least a detection step for detecting a labeled substance captured by a scavenger in at least one holding unit that holds the scavenger, wherein, in the detection step, a means for reducing the effect of the scavenger is employed.

This method is for improving the combustion resistance of a working fluid containing a refrigerator oil and a refrigerant in a refrigerator filled with the working fluid, wherein the refrigerator oil contains 0.1 mass% to 10 mass% of an acid scavenger with respect to the total amount of refrigerator oil.

The invention belongs to the technical field of prevention and control of invading fishes, and particularly relates to bait for trapping silurus meridionalis invading fishes. According to the invention, multiple raw material screening experiments, raw material optimization experiments and raw material combination screening experiments are carried out; finally, the bait for trapping the silurus asotus invading fishes is screened out and comprises, by weight, 1 part of euphausia superba powder, 1 part of pork liver powder, 1 part of chicken liver powder, 1 part of chicken intestine powder, 1 part of hydrogossypium powder, 1 part of sweet potato powder, 3 parts of peanut crisp powder and 1 part of ampullaria gigas powder, all the raw material powder are mixed according to the proportion, water is added, stirring is conducted, and the bait for trapping the silurus asotus invading fishes is obtained. Through comparison of six times of implementation results, the number of scavengers attracted by the bait provided by the invention is larger than that attracted by commercial bait for four times, and it is proved that the bait provided by the invention has a certain attraction effect on the scavengers.

According to the biological purification device, a generator is connected with a storage battery, and the storage battery is connected with a driving circuit; one end of the drainage pipe is connected with the water pump, the other end of the drainage pipe is arranged above the water tank, the water tank is arranged on the upper right portion of the shell, a drainage plate of the drainage pipe faces the inclined filter screen, the right end of the inclined filter screen is hinged to the right side of the culture pond, the left side of the inclined filter screen is arranged at the upper end of a middle inclined step, and the left end of the inclined filter screen is arranged on the upper right portion of the decomposition pond; the filter plate is arranged in a middle hole of a middle inclined step for separating the shell into the decomposition tank and the culture tank and is communicated with the decomposition tank and the culture tank; the gas-lift filter is arranged at the bottom of the culture pond and connected with the reversing valve through a left gas pipe, a right gas pipe and a middle gas pipe, and the reversing valve is connected with the gas pump through a gas supply pipe. The power generator is uniform in output electric quantity, the gas lift filter can accurately adjust the PH value of a water body, and secondary pollution is avoided; the organic solid waste treatment speed of loaches and scavengers in the decomposition tank is far higher than that of plants, microorganisms, reeds and water hyacinth, inorganic salt is filtered in a three-dimensional mode, and the space utilization rate is high.

The invention discloses a multi-section type hunting device for rapidly removing a scavenger, and relates to the field of fishery, the multi-section type hunting device comprises a fishing cylinder, the outer side of one end of the fishing cylinder is sleeved with a non-return rubber sleeve, the other end of the fishing cylinder is connected with a fixing cylinder, one end of the fixing cylinder is provided with a waterproof motor, the inner side of the fixing cylinder is welded with a supporting frame, and the supporting frame is provided with a water inlet and a water outlet. A bearing is embedded into the inner side of the supporting frame, a rotating rod is installed on the inner side of the bearing, and a blade is spot-welded to the outer side of the rotating rod. The device is scientific and reasonable in structure and safe and convenient to use, and the smell of the sucked scavengers is dispersed to the whole riverway, so that a large number of scavengers can be rapidly gathered, and the practicability of the device is improved. By means of the device, the scavenger can be actively trapped, the diffused feed only attracts the scavenger, other fishes cannot be affected, the situation that all the fishes are thrown up and then sorted like a traditional catching mode is not needed, and the catching and killing efficiency is greatly improved.

A treatment composition includes a scavenger, an amine, and optionally a booster amine. A treatment composition may be contacted with an H2S rich stream by direct addition of the composition to the H2S rich stream, or by bubbling the H2S rich stream through the composition. The H2S rich stream may be e.g. a produced gas, a biogas, a crude oil, or a produced water. The treated streams have a reduced amount of H2S (and / or another sulfhydryl compound) therein, when compared to the amount of H2S in the stream prior to the treatment. The compositions and methods of treating are characterized by a substantial absence of, or reduction in the amount of precipitate formed thereby, when compared to methods and compositions of the prior art.

The current invention pertains to a use of a scavenger in method or protocol for treatment of a plant cell with a mutagen, optionally in a method for random mutagenesis, mutagenized plants obtained using said method or protocol, and a composition or kit for use in said method or protocol.

This invention discloses a carbon dioxide eliminator for drilling fluids, its preparation method, and its application, comprising the following steps: S1, grinding walnut shells into powder; S2, hydrophilically modifying the walnut shell powder to obtain modified walnut shell powder; S3, adding the modified walnut shell powder to water, stirring, and adding calcium chloride and gluconic acid; S4, filtering and drying the mixture from step S3 to obtain a solid powder; S5, granulating the solid powder and drying it to obtain solid particles; S6, coating the surface of the solid particles obtained in step S5 to obtain the carbon dioxide eliminator for drilling fluids. This invention utilizes the porous structure of walnut shells as a support, enabling the storage of calcium ions, the main component for eliminating carbon dioxide, within it, thereby achieving a slow and continuous release of calcium ions in the drilling fluid; simultaneously, the hydrophilically modified walnut shell powder can disperse rapidly in water, increasing the release rate of calcium ions and thus improving the efficiency of carbon dioxide elimination.

The invention provides a photosensitizer with a DNA targeting characteristic and application of the photosensitizer as an intracellular drug-resistant bacterium scavenger, and belongs to the technical field of photosensitive antibacterial drugs. The photosensitizer with the DNA targeting characteristic can effectively penetrate through cell membranes and biological membranes of mammals and target DNA of drug-resistant bacteria, can effectively kill the drug-resistant bacteria such as methicillin-resistant staphylococcus aureus under the condition of light source irradiation, and relieves the drug resistance condition of existing antibiotics. Results of the embodiment show that after the TPE-CN is illuminated for 5 minutes, the TPE-CN has a good methicillin-resistant staphylococcus aureus killing effect under the administration concentration of 5-20 [mu] M, and the sterilizing effect on animals is better than that of vancomycin. The invention provides a preparation method of the photosensitizer with the DNA targeting characteristic, and the method is simple to operate and easy to realize industrial batch production.

The application discloses a multi-scale sucker of a biomimetic scavenger fish for non-destructive adsorption fixation of organ tissues. The sucker comprises a lip disc with a stiffness gradient characteristic, a pre-valve cavity and a post-valve cavity, the lip disc is provided with a biomimetic papilla structure and a mucus secretion flow channel, and a side wall of the sucker is provided with a negative pressure through hole. Through the multi-scale biomimetic mechanism of coupling negative pressure adsorption, chemical adhesion and capillary force adsorption, the sucker can realize high-strength, high-reliability and non-destructive adsorption fixation on the surface of wet and soft organ tissues, can be used for traction and stabilization of tissues in minimally invasive surgery, and can effectively expand and maintain the exposure of an operation field.

To provide a material for efficiently capturing an active hydrogen-containing organic compound such as an alcohol compound.SOLUTION: An active hydrogen-containing organic compound scavenger is used, the scavenger contains an isocyanate compound represented by the following general formula (1) and having a bromine content of 38 to 78 wt% (in the above general formula, R1 and R2 each independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and R3 is each, independently, represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or a bromine atom. m represents at least one selected from the group consisting of 0, 1, 2, and 3. n represents an actual number of 0 or more) (may be a single compound, a mixture of a plurality of compounds, in the case of mixture, n represents an average value of the mixture).SELECTED DRAWING: None

The invention discloses a scavenger for ponds, a preparation method and application. The scavenger for the ponds comprises 50-70 wt% of lactobacillus plantarum fermentation products, 5-10 wt% of copper sulfate and / or hydrates thereof, 20-30 wt% of benzalkonium chloride and 5-10 wt% of citric acid and / or hydrates thereof. The scavenging agent for the pond is simple and convenient in preparation method, quick in effect, low in toxicity, good in ecological safety and suitable for emergency control and daily prevention of moss.

The trapping and killing device comprises a trapping and killing box, a trapping and killing cavity is formed in the trapping and killing box, a clamping groove plate is connected to the end face of one side of the trapping and killing box in a clamped mode, a one-way rubber plate is installed on the inner side of the clamping groove plate, a rotating groove is formed in the bottom end of the trapping and killing box, and the rotating groove is connected with the clamping groove plate in a clamped mode. The device is scientific and reasonable in structure and safe and convenient to use, food smell is diffused into a water area, a large number of scavengers can enter a trapping and killing cavity, an electric telescopic rod can drive a killing plate to continuously descend, then the killing plate and an extrusion strip at the top of a bottom rotating plate kill the scavengers in the middle, and the device is convenient to use and high in practicability. After the killing plate moves downwards to the maximum length, the inactivated scavengers in the trapping and killing chamber can be pushed out into a water area, and the inactivated scavengers can be cleaned along with water flow, so that the interior of the trapping and killing box is emptied, and the scavengers can be conveniently caught and killed subsequently.

The present application belongs to a kind of reagent for promoting Fraxinus mandshurica pollen to germinate on Fraxinus mandshurica stigma and its use method, the method is related to Fraxinus mandshurica breeding technical field, the method mainly uses Fraxinus mandshurica pistil as experimental material, after being treated with 100 μM-200 μM copper chloride (CuCl2; plant active oxygen scavenger), it is placed in vitro incubation medium to culture 1h, then pollination is carried out.The present application uses chemical reagent to simply and efficiently promote Fraxinus mandshurica pollen to germinate on Fraxinus mandshurica stigma, establishes simple and efficient Fraxinus mandshurica female inflorescence in vitro culture and pollination detection system, provides effective means for Fraxinus mandshurica pollination breeding and analyzing Fraxinus mandshurica pollination and fertilization mechanism.