20 results about "Dimercaptosuccinic acid" patented technology

A child bladder ureteral reflux deep learning prediction system relates to the field of image processing, and comprises an image acquisition unit used for acquiring a dimercaptosuccinic acid kidney static image of a child patient; the image processing unit is used for carrying out region-of-interest division on the image and carrying out preprocessing; the prediction model is trained to obtain the kidney image processed by the image processing unit and output a classification result, and the prediction model comprises an image block feature embedding module; the multi-layer feature extraction module captures local features through a layered window multi-head self-attention mechanism, and an image block merging layer is inserted between every two basic layers to perform down-sampling on a feature map; and the feature fusion layer is used for fusing the features captured by each layer and outputting a classification result. According to the invention, the local and global features in the medical image can be effectively captured, the effective utilization of the medical image data is realized, and the auxiliary diagnosis effect is improved.

The invention belongs to the technical field of medicines, and particularly relates to application of a sulfydryl derivative in preparation of a weight-losing product. The invention provides an application of a sulfydryl derivative in preparation of a weight-losing product, and the sulfydryl derivative is selected from one or more of 2, 3-dimercaptopropionic acid, dimercaptopropanesulfonic acid, dimercaptosuccinic acid, dimercaptopropanol, trithiocyanuric acid and salts or esters of the compounds. Through animal experiments, the weight of mice is detected, and it is fully verified that the sulfydryl derivative, especially dimercaptosuccinic acid and trithiocyanuric acid, has a remarkable weight losing effect and can effectively inhibit weight increase.

The invention discloses an environment-friendly bio-based chinlon core-spun yarn and a preparation method thereof, and belongs to the technical field of bio-based high polymer materials and functional textile materials. The chinlon core-spun yarn comprises synergistically modified bio-based nylon-6, ellagic acid, an antioxidant, nano titanium dioxide, an antistatic agent and a lubricant; wherein the synergistically modified bio-based nylon-6 is a multi-network synergistically enhanced system formed by in-situ construction of a boron-oxygen heterocyclic structure, a dynamic sulfydryl exchange structure and an interface anchoring structure by bio-based nylon-6, phenylboronic acid, catechol, 2, 3-dimercaptosuccinic acid and gamma-aminopropyltriethoxysilane under a melting condition; the ellagic acid participates in the interchain multiple hydrogen bond and pi action through the rigid polyphenol conjugated structure of the ellagic acid, so that molecular-level synergistic regulation is realized. Under the condition of not increasing the load of the inorganic filler, the tensile strength and the thermal stability of the yarn are remarkably improved, the thermal shrinkage rate is reduced, the ultraviolet resistance and the thermo-oxidative aging durability are improved, and good environmental friendliness and industrial application prospects are achieved.

The invention discloses a pharmaceutical composition containing sodium calcium edetate and dimercaptosuccinic acid as well as a preparation method and application of the pharmaceutical composition, and relates to the technical field of biological medicines. The pharmaceutical composition comprises the following components: penthorum chinense pursh extract, tuber fleeceflower stem extract, anchusa, muskmelon pedicel, pomegranate root bark, dimercaptosuccinic acid and sodium calcium edetate. According to the invention, by carefully selecting each component and dosage and selecting proper traditional Chinese medicines and western medicines for mutual matching, the research finds that the pharmaceutical composition can effectively inhibit the growth of melanoma cells, is safe and free of side effects to human bodies after being used, and is suitable for large-area popularization and application.

The application belongs to the technical field of separation and purification, and particularly relates to a zirconium-based MOF adsorption material and a preparation method and application thereof. The zirconium-based MOF adsorption material is a Zr-DMSA-SH adsorption material synthesized by taking zirconium chloride as a metal source and taking meso-2,3-dimercaptosuccinic acid as an organic ligand. The material has good stability and shows significant advantages in Pt / Rh / Pd separation and recovery, exhibits a high adsorption capacity for Pd, exhibits a moderate adsorption performance for Pt, and is basically not adsorbed for Rh. The adsorption experiment shows that the process steps are simple, easy to operate, and low in equipment requirements, without the need for large and precise equipment and special experimental conditions, and the entire experimental operation can be completed in a conventional laboratory, and the overall experiment has high feasibility and practicability, and has good potential for large-scale application.

The present invention relates to a method for treating keratin fibers, in particular human hair, comprising the following steps: - Application of a pretreatment agent (V) to the keratin fibers, wherein the pretreatment agent contains (V-1) at least one reducing agent selected from the group consisting of dithioerythritol, dithiothreitol, acetylcysteine, dimercaptosuccinic acid, thioglycerol, thiolactic acid, sodium dithionite, zinc dithionite, potassium dithionite, formamidine sulfinic acid, 2-hydroxy-2-sulfinoacetic acid and salts thereof, and - Application of a post-treatment agent (N) to the keratin fibers, wherein the post-treatment agent (N) contains (N-1) at least one organic silicon compound from the group of silanes with one, two or three silicon atoms.

The invention relates to the technical field of veneering materials, in particular to a veneering material based on genuine leather crushing and recycling and a preparation method of the veneering material. The method comprises the following steps: crushing genuine leather leftover materials, activating the crushed genuine leather leftover materials with a NaOH solution, and synchronously preparing double-bond-containing modified polyurethane and amino-modified nano-zinc oxide; and blending the three materials with 2, 3-dimercaptosuccinic acid and the like to form composite slurry, and carrying out hot-pressing cross-linking and surface anti-fouling treatment to obtain the veneering material. Amino groups of dermal fibers react with isocyanate groups of polyurethane to form covalent bonds, and double-bond self-crosslinking of modified polyurethane and bridging of nano-zinc oxide are performed to construct a high-strength structure; the self-repairing function is realized by utilizing reversible breakage and recombination of disulfide bonds and thiol-thioester exchange reaction; the amino-modified nano-zinc oxide is utilized to realize efficient bacteriostasis through coordination of zinc ion release and electrostatic adsorption. The veneering material prepared by the method is excellent in mechanical property, self-repairing and lasting in antibacterial property, and a green solution is provided for high-value utilization of leather leftover materials.

The invention discloses a method for raising sheep in alpine regions and a special feed thereof. The invention relates to a diatom-source antifreeze protein peptide-III-microencapsulated calcium palmitate-containing compound preparation, which specifically comprises the following components in parts by mass: 100 to 130 parts of microencapsulated calcium palmitate, 6 to 10 parts of diatom-source antifreeze protein peptide AFP-III, 0.01 to 0.1 part of CRISPR (Clustered Regularly Interspaced Short Palindromic Repeats) edited lactobacillus plantarum LP-7, 1 to 2 parts of selenium-loaded mesoporous hydroxyapatite, 1 to 1.5 parts of dimercaptosuccinic acid, 0.1 to 0.3 part of resveratrol-beta cyclodextrin inclusion compound, and 500 to 600 parts of highland barley straw. The invention relates to the technical field of feeds, in particular to a cold-resistant feed additive which comprises, by mass, 1-1.5 parts of complex microbial inoculants, 50-100 parts of cold-resistant composite extracts and 20-40 parts of rare earth modified bentonite. According to the breeding method and the special feed for the sheep in the alpine region, highland barley straw is fermented by adopting an aspergillus niger and xylanase complex microbial inoculant in stages, so that the degradation rate of lignin is greater than or equal to 76%, the lignocellulose structure of the straw is greatly damaged, and fermentable carbohydrates are exposed; the palatability and the feed intake of the coarse feed are improved.

The invention relates to the technical field of flocculants, and discloses a preparation method and application of a Sn-S chelating type organic composite flocculant. According to the preparation method, dioctyltin dilaurate and dimercaptosuccinic acid are taken as raw materials, organic tin compound chelation is carried out by utilizing a chelation mechanism, and tin and sulfur atoms are combined to form a five-membered ring-shaped organic ring-shaped framework material, namely the Sn-S chelating type organic composite flocculant. The Sn-S chelating type organic composite flocculant provided by the invention is a chelating dominant chemical bond, a stable five-membered ring chelate is formed through a covalent bond, the bond energy is high, the reaction irreversibility is strong, the organic annular skeleton structure is stable, and the spatial position of a sulfur atom can be fixed in advance through the annular skeleton, so that the sulfur atom is coordinated with a heavy metal in a five-membered ring configuration, and the adsorption capacity of the flocculant is improved. Therefore, the affinity to Pb < 2 + > and Hg < 2 + > is particularly good, the removal effect on heavy metal ions such as mercury and lead ions in wastewater is excellent, and the removal rate can reach 90% or above.

The present invention relates to the technical field of bio-separation materials, and in particular to a method for preparing silicon-based magnetic beads and chemiluminescent applications. The present invention provides a method for preparing silicon-based magnetic beads, comprising the following steps: (1) preparing a silicon dioxide microsphere core; (2) preparing dithiothiocarbazine DMSA-coated aqueous phase particles; (3) preparing magnetic microspheres by layer-by-layer self-assembly; (4) surface silicon dioxide encapsulation; (5) surface carboxyl modification to obtain silicon-based magnetic beads. It has low nonspecificity and high sensitivity, small batch-to-batch differences, and reproducible results. It can provide a variety of sizes to meet the needs of different projects, and is an ideal choice for chemiluminescent applications. The product development steps follow the green environmental protection principle, do not contain plastic particles, and are beneficial to environmental protection.

The invention provides an in-situ ecological restoration agent for river and lake sediment and a preparation process thereof. The in-situ ecological restoration agent for river and lake sediment is mainly composed of the following raw materials in parts by mass: 15-30 parts of coconut shell granular activated carbon, 40-50 parts of montmorillonite particles, 10-20 parts of macroporous anion exchange resin D301, 10-20 parts of macroporous cation exchange resin D113, 5-20 parts of column chromatography silica gel, 5-10 parts of polyethylene glycol, 10-15 parts of dimercaptosuccinic acid, 5-10 parts of ethylenediaminetetraacetic acid, 10-20 parts of carboxyl nitrile rubber modified SBS elastomer and 4-5 parts of crown ether carboxylic acid. The repair agent of the present invention utilizes the principles of physical and chemical stabilization and repair to stabilize and solidify heavy metal ions in river and lake sediments in the repair agent, and at the same time reduces the mobility and toxicity of heavy metal ions through chemical reaction changes, thereby ensuring that the removal rate of heavy metal ions in river and lake sediments after repair reaches more than 95%, and is stable for a long time without release and precipitation, thus meeting the needs of subsequent harmless treatment and resource utilization of the sediment.

The invention belongs to the technical field of preparation of ion identification, adsorption and separation functional materials, and discloses a preparation method and adsorption application of a functionalized light-driven nano motor adsorbent. The gold nanoparticles Au NPs are loaded in the HNTs by adopting a solvent method so as to generate a good photothermal effect, and then the surface is covered with the PDA layer and the DMSA, so that the adsorption performance of the adsorbent is improved. Experiments show that the Au-coated DHNTs-DMSA has good photothermal conversion efficiency, biocompatibility and biological safety, and the in-vitro blood lead removal rate is as high as 91.25%, so that the Au-coated DHNTs-DMSA can be used for effectively treating lead poisoning.

This invention discloses an inverse perovskite anode interface modification material and its application, belonging to the field of perovskite solar cell technology. The interface modification material includes thiomalic acid, 2-amino-3-sulfonylpropionic acid, DL-2-amino-3-phosphopropionic acid, dimercaptosuccinic acid, etc. The interface modification material contains two or more groups that interact with TCO (total organic carbon), and the material preferentially and directionally deposits in areas not covered by SAM (soil anode metallization layer). During the deposition process of this interface modification material, an alcohol-soluble solvent can partially dissolve and wash away aggregated SAM molecules, improving the coverage of SAM molecules and enhancing the hole extraction and transport capabilities of the SAM hole transport layer. The interface modification material of this invention contains groups that interact with perovskite, reducing the formation of cracks and pores at the perovskite buried interface, and reducing and passivating defects.

The application discloses a preparation method and application of an aflatoxin M1 hapten and a whole antigen, wherein the hapten contains two complete active carboxyl groups and can be firmly combined with more carrier proteins. The aflatoxin M1 hapten is obtained by addition of aflatoxin M1 and dimercaptosuccinic acid under catalysis of boron trifluoride ether; the whole antigen is a covalent combination of the hapten and BSA, is prepared by using an EDC / NHS carboxyl coupling method, and can be used for antibody preparation and AFM1 detection.

The application relates to the technical field of flocculants, and discloses a preparation method of Sn-S chelate type organic composite flocculants and application thereof. The Sn-S chelate type organic composite flocculants are prepared by using di-n-octyltin dilaurate and dimercaptosuccinic acid as raw materials and chelating mechanism to chelate organotin compounds, combine tin and sulfur atoms to form a five-membered ring organic ring skeleton material. The Sn-S chelate type organic composite flocculants provided by the application are chelate-dominant chemical bonds, can form stable five-membered ring chelates through covalent bonds, have high bond energy, strong irreversible reaction, stable organic ring skeleton structure, can fix the spatial position of sulfur atoms in advance through the ring skeleton, can be coordinated with heavy metals in the form of five-membered ring, and can improve reaction kinetics and binding strength. Therefore, the Sn-S chelate type organic composite flocculants have excellent affinity to Pb 2+ and Hg 2+ , and can remove mercury and lead ions in wastewater with a removal rate of more than 90%.

The invention discloses a lead adsorption material, a preparation method thereof and application of the lead adsorption material in perovskite photoelectric device packaging, and belongs to the technical field of perovskite photoelectric device packaging. Two novel lead ion adsorption materials are prepared by taking 2-phosphonic-1, 2, 4-tricarboxylic acid butane or 2, 3-dimercaptosuccinic acid matched with polyvinyl alcohol and glycerol as raw materials. The prepared lead adsorption material is suitable for various situations needing to control lead release, for example, lead leakage in a perovskite photoelectric device is controlled, one of the two lead adsorption materials is integrated into a traditional packaging layer of the device to form a composite packaging layer, the impact strength and the waterproof and anti-oxidation capacity of the photoelectric device are enhanced by utilizing the traditional packaging layer, and the photoelectric device is prevented from being damaged. According to the perovskite photoelectric device, toxic lead in the damaged photoelectric device is prevented from being exposed to the environment through the lead adsorption layer made of the lead adsorption material, the lead adsorption layer still has excellent lead adsorption capacity after long-term temperature circulation, the service life of the perovskite photoelectric device can be effectively prolonged, the stability of the perovskite photoelectric device can be effectively improved, and potential pollution of the perovskite photoelectric device to the environment is reduced.

The invention provides a chelating agent and method for treating thallium-containing metal pollutants, and belongs to the technical field of environmental protection governance, the chelating agent mainly comprises the following components by weight: 1%-90% of at least one of piperazine and derivatives thereof; 1% to 90% of O, O-diisopropyl ammonium dithiophosphate; 1% to 90% of 2, 3-dimercaptosuccinic acid; 1%-90% of calcium polysulfide; 1% to 90% of 3-chloro-2-hydroxypropyl trimethyl ammonium chloride; the balance is a solvent; all the components are uniformly mixed in proportion to form a powdery solid mixture, and then the powdery solid mixture is dissolved in a solvent and uniformly stirred to prepare the chelating agent. Adding the chelating agent into a liquid thallium-containing metal pollutant, and stirring to react until a precipitate is separated out; discharging supernate; and filtering the precipitate, and drying to obtain thallium salt crystals. The invention provides the organic chelating agent which can efficiently degrade thallium-containing metal pollutants and is simple in process, the treatment process is simple, the occupied area is small, the treatment speed is high, and chelating degradation of thallium and other pollutants can be achieved within 1 h.

The invention relates to the technical field of nano materials, and discloses a nano preparation as well as a preparation method and application thereof. The nano preparation contains a phospholipid compound, an inhibitor A and an inhibitor B, the inhibitor A is selected from at least one of rapamycin, fluconazole, amphotericin B and caspofungin, and the inhibitor B is selected from at least one of deferasirox, deferoxamine, deferoxone, dimercaptosuccinic acid and penicillamine. The nano preparation has a good bacteriostatic and bactericidal effect on biphasic fungi, has a good treatment effect on systemic infection, and can weaken the toxic and side effects of drugs.

This invention discloses a method for preparing aflatoxin M1 hapten and full antigen, and their applications. The hapten contains two intact active carboxyl groups, which can firmly bind to more carrier proteins. The aflatoxin M1 hapten is obtained by the addition reaction of aflatoxin M1 with dimercaptosuccinic acid under the catalysis of boron trifluoride diethyl ether. The full antigen is a covalent conjugate of the hapten and BSA, prepared by the EDC / NHS activated carboxyl coupling method, and can be used for antibody preparation and AFM1 detection.

The present invention relates to the technical field of veneer materials, and in particular to veneer materials based on the crushing and recycling of genuine leather and a preparation method thereof. By crushing genuine leather tanning scraps and activating them with a NaOH solution, a modified polyurethane containing double bonds and amino-modified nano-zinc oxide are simultaneously prepared; the three are then blended with 2,3-dimercaptosuccinic acid and the like to form a composite slurry, and the veneer material is obtained by hot-pressing cross-linking and surface anti-fouling treatment. The present invention forms a high-strength structure by reacting the amino groups of genuine leather fibers with the isocyanate groups of polyurethane to form covalent bonds, as well as the double bonds of the modified polyurethane self-crosslinking and nano-zinc oxide bridging; the self-repairing function is achieved by utilizing the reversible rupture and recombination of disulfide bonds and the thiol-thioester exchange reaction; and the amino-modified nano-zinc oxide is utilized to achieve efficient antibacterial properties through the synergistic release of zinc ions and electrostatic adsorption. The veneer material prepared by the present invention has excellent mechanical properties, is self-repairable, and has long-lasting antibacterial properties, providing a green solution for the high-value utilization of genuine leather scraps.