15 results about "Calcium oxalate" patented technology

The invention discloses a green, environment-friendly and efficient vanadium extraction method, and relates to a roasting additive and a roasting process thereof, and the method is realized by the following steps: mixing vanadium slag and a calcium oxalate additive, roasting, and treating the roasted clinker with acid to obtain a vanadium ion-containing solution and low-solubility residues; and treating the vanadium-containing ion solution to obtain a vanadium product with high vanadium content. According to the method, vanadium in the vanadium slag can be efficiently and rapidly separated and purified, an existing vanadium extraction process is simplified, the yield of vanadium is increased, the temperature and time needed by roasting the vanadium slag through a traditional calcium method are reduced, the risk of percolation of vanadium extraction tailings through a traditional sodium method is reduced, and the problems that in the traditional vanadium slag vanadium extraction process, the vanadium extraction rate is low, energy consumption is high, and the process is complex are solved; no harmful waste is discharged in the whole process, and no hexavalent chromium leakage risk exists in the leached tailings. The method is simple in process, energy-saving, environment-friendly, high in operability and wide in application prospect.

The invention discloses an ICAM-1 targeting engineered exosome-metal phenol nano-drug as well as a preparation method and application thereof. The nano-drug is composed of an engineered exosome and metal phenol nano-particles, wherein ICAM-1 targeting VHH antibodies are displayed on the surface of the engineered exosome, and the metal phenol nano-particles are encapsulated in the engineered exosome and formed by self-assembly of iron ions and resveratrol. The MPNs are efficiently loaded into the exosome through an electroporation method, and a composite nano delivery system (ICAM (at) Exo (at) MPNs) is constructed. The system has multiple advantages of active targeting of kidney inflammation parts, active oxygen responsive drug release, simulation of antioxidant enzyme activity, regulation and control of macrophage functions and the like. The ICAM (at) Exo (at) MPNs can remarkably relieve kidney crystal deposition, oxidative stress and inflammatory response induced by calcium oxalate, and the protective effect of the ICAM (at) Exo (at) MPNs is related to regulation and control of an SLC1A7 / MerTK signal channel. The invention provides an efficient and safe new strategy for preventing and treating the calcium oxalate kidney injury.

Systems and methods for use in wastewater treatment plants that use aerobic digestion are provided. The systems and methods precipitate phosphates from the supernatant of an aerobic digest to produce a brushite-containing sludge, at least a portion of which is recirculated back into the aerobic digest. The methods reduce phosphate in the reject water produced by dewatering an aerobic digestate, while maintaining the pH of the aerobically digested sludge in a suitable range for polymer flocculants commonly used in sludge dewatering.

This invention provides an ion-doped calcium oxalate thermochemical heat storage material and its preparation method, the chemical formula of which is Ca. 1‑ x M x C2O4·H2O, where M is a dopant ion and x is the mole fraction of the dopant ion; M includes Mg 2+ Co 2+ Zn 2+ 、Sr 2+ One or more of the following. This invention regulates the lattice parameters, local coordination environment, defect state, and microstructure of calcium oxalate by doping with ions. While maintaining the original reversibility and cycle stability of the calcium oxalate system, it further optimizes its dehydration thermal storage temperature range, thermal response boundary, structural evolution behavior, and application compatibility materials, thereby improving the thermochemical thermal storage performance of calcium oxalate from the internal structural level.

This invention discloses a highly antibacterial oral sealant for treating dentin hypersensitivity, its preparation method, and its application. The sealant's raw materials include calcium oxalate, diammonium hydrogen phosphate, tetraethyl orthosilicate, and cerium nitrate hexahydrate. It is a bioactive material that can generate hydroxyapatite in a short time and exhibits good biocompatibility. This sealant regulates and stabilizes Ce... 3+ Ce 4+ The ratio of these components results in high antibacterial properties, making it suitable for use as an oral sealant. It primarily works by sealing the gaps between the pits and fissures of teeth to block bacterial invasion, thereby improving the acid resistance of tooth enamel and preventing cavities. At the same time, this material has good bactericidal properties, allowing for deeper bacterial removal and ensuring a clean oral environment.

This patent document discloses novel oxamaies that can act as potent inhibitors of calcium oxalate (CaOx) crystallization and new macrocyclic prodrugs that will offer improved lipophilicity, small size, lower polar surface area, and greatly reduced solvent accessible surface area, all properties known to impart better oral bioavailability. Also disclosed herein are methods of treating diseases associated with abnormal levels of calcium oxalate and its crystallization.

This invention relates to a comprehensive evaluation method for the quality of Pinellia ternata and a method for constructing a fingerprint spectrum of Pinellia ternata. The method includes: processing Pinellia ternata to obtain a test solution; preparing a reference solution containing guanosine, phenylalanine, VGTNY, tryptophan, LFSG, apigenin-6-C-arabinose-8-C-galactoside, PWVPG, NIPF, and VIYGPSVF; injecting the test solution and the reference solution separately into a liquid chromatography-mass spectrometry (LC-MS) instrument, and obtaining the fingerprint spectrum of the Pinellia ternata using LC-MS. A method for determining the content of toxic components calcium oxalate needle crystals and lectin protein is also established. The comprehensive evaluation method for the quality of Pinellia ternata provided by this invention comprehensively improves the evaluation standards for Pinellia ternata, ensuring the effectiveness and safety of Pinellia ternata in clinical use.

This invention provides a wettable powder of imidacloprid, the raw materials for which include: imidacloprid, a wetting and dispersing agent, a filler, and other additives, wherein the imidacloprid content is 15-25 wt%. The wetting and dispersing agent includes anionic, nonionic, and inorganic dispersants. The filler includes one or more of silica powder, quartz powder, clay, calcium oxalate, mica powder, carbon black, calcium sulfate, and alumina. This invention provides a wettable powder with excellent suspension and wettability.

The application discloses a synthesis method of a biological source calcium oxalate mineral composite material for selective holding of lead ions and application thereof. The method inoculates a fungal spore suspension in a soluble calcium phosphate deficient stress liquid culture medium, and after the fungus fully releases insoluble phosphorus, a calcium oxalate mineral composite material is obtained by separation. The synthesized calcium oxalate mineral composite material has the characteristics of strong selectivity for lead ions, good adsorption effect and difficulty in desorption, and can selectively adsorb lead from mixed heavy metal waste liquid. The raw materials used in the application are easy to obtain and low in cost. The biological synthesis process is economic, environmental protection, simple in operation, the obtained mineral composite material is strong in acid resistance, storage and use are simple, and has a good application prospect for selective recovery of lead resources in composite heavy metal contaminated wastewater.

The application provides a bacillus amyloliquefaciens and application thereof, and relates to the field of microbial fermentation. Bacillus amyloliquefaciens The strain is named bacillus amyloliquefaciens (B2), is preserved in the China General Microbiological Culture Collection Center, 3, Xili Beichen, Chaoyang District, Beijing, China, and has a preservation date of July 30, 2025 and a preservation number of CGMCC NO.35462. Bacillus amyloliquefaciens The bacillus amyloliquefaciens (B2) provided by the application can be used for degrading calcium oxalate needle crystals in Banxia Qu.

The invention discloses pure polygonatum sibiricum primary pulp as well as a preparation method and application thereof, and belongs to the technical field of deep processing of agricultural products. The preparation method comprises the following steps: performing twice or three times of'boiling-drying 'circular treatment on pretreated rhizoma polygonati to obtain cured rhizoma polygonati; mixing the cured polygonatum sibiricum with water, and grinding to obtain polygonatum sibiricum pulp; and homogenizing and sterilizing the polygonatum sibiricum pulp to obtain the pure polygonatum sibiricum primary pulp. Through a specific'high-pressure boiling-drying 'circulation process and key parameter cooperative control, on the premise of not adding any allogenic material and not using expensive special equipment, irritant free calcium oxalate needle crystals in rhizoma polygonati are thoroughly eliminated, active ingredients such as polysaccharide and saponin are reserved to the maximum extent, and the health-care effect of rhizoma polygonati is improved. The obtained primary pulp has excellent alpha-glucosidase and alpha-amylase inhibitory activity, is excellent in sensory quality and stable in storage, and can be used for preparing functional foods for reducing blood sugar. The method is simple in process, controllable in cost, high in product purity and suitable for large-scale production.

The invention discloses a method for recovering lithium from electrolytic aluminum waste residues, which comprises the following steps: finely grinding the electrolytic aluminum waste residues containing lithium fluoride into powder, heating, centrifugally separating to obtain a high-lithium electrolyte solution and a low-lithium electrolyte solution, infiltrating the high-lithium electrolyte solution by using a calcium chloride solution, and carrying out liquid-solid separation on calcium fluoride precipitate; adding ammonium bicarbonate into the leaching mother liquor, and carrying out liquid-solid separation on calcium carbonate precipitates; adding sodium oxalate into the ammonium bicarbonate conversion mother liquor to carry out secondary calcium removal, and carrying out liquid-solid separation on calcium oxalate precipitates; adding sodium carbonate into the calcium precipitation mother liquor, carbonizing and precipitating lithium, performing liquid-solid separation to obtain lithium carbonate precipitate, and drying to obtain battery-grade lithium carbonate. According to the method, the lithium extraction efficiency is high, the cost is low, the purity of the obtained lithium carbonate meets the battery grade requirement, meanwhile, the generated by-product can be used as an industrial raw material, the lithium precipitation mother liquor can achieve zero waste liquid discharge through the double decomposition process, and finally reduction and high-value utilization of the electrolytic aluminum waste residues are achieved.

The invention discloses nano calcium carbonate for a photovoltaic adhesive with high humidity and heat performance, and a preparation method and application thereof, and belongs to the technical field of inorganic nano material modification. The method comprises the following steps: preparing a calcium carbonate suspension by taking sucrose as a crystal form control agent, treating the calcium carbonate suspension with ammonium oxalate to form a calcium oxalate coated calcium carbonate suspension, and then sequentially carrying out long-chain fatty acid wet modification and aluminum-zirconium coupling agent dry treatment. A multi-layer composite protection structure is constructed on the surfaces of the particles through the working procedures, so that the physical water blocking, hydrophobic and interface enhancing effects are synchronously realized. The photovoltaic adhesive prepared by the invention shows excellent tensile strength, elongation at break and bonding strength retention rate in a high-temperature and high-humidity aging environment, and the damp-heat aging resistance of the photovoltaic adhesive is remarkably improved.

The present invention relates to an assessment device and tool for medical professionals to increase the success rates of the cancer removal surgeries of breast cancer patients. The removed breast tissue specimen is brought to an X-ray imaging device (200). A first image is taken from the whole specimen (203), and interesting areas (204a) are found either by machine-assisted tools or by human assessment on the actual image. Then a geometric magnification may be performed on the interesting area(s) (204a). The device may provide pixel-specific graphs on the intensities, and this gives help in finding microcalcifications in the specimen (203), comprising calcium oxalate (301) and calcium phosphate (302). The microcalcifications act as markers for various types of tumours. The closest distance from the found carcinoma (304) to the surface of the specimen (203) is also assessed as the healthy margin (303). The result is a human- & machine-made combined assessment, whether the surgery needs to be continued or not.

The application discloses a preparation method of high-purity chlorine-free stomach-protecting sodium ion water, and belongs to the technical field of drinking water processing. The preparation method is characterized by using food-grade sodium carbonate, oxalic acid and calcium carbonate as raw materials, accurately feeding based on the atomic weight stoichiometric ratio, and realizing deep removal of impurities through step-by-step precipitation reaction. First, sodium carbonate and oxalic acid are reacted to generate a mixed mother liquor containing sodium ions and oxalate ions; then, calcium carbonate is added to convert the oxalate ions into calcium oxalate precipitates, and the calcium oxalate precipitates are removed through filtration; finally, high-purity sodium ion water which is chlorine-free, impurity-free and mild to the stomach is obtained. The preparation method has the advantages of normal temperature and pressure, safe and easily-obtained raw materials, low production cost, simple and easy-to-operate process, and the like, the by-products can be recycled, no waste is generated, and the preparation method is suitable for large-scale production of drinking-grade high-purity chlorine-free sodium ion water.