22 results about "Calcium deposition" patented technology

The invention belongs to the technical field of building materials, and particularly relates to a preparation method of alkali-treated polypropylene fiber and recycled aggregate loaded bacillus coriolis synergistic microbial concrete. According to the method, a polypropylene fiber reinforced concrete matrix is subjected to alkali treatment, calcium carbonate is generated by combining the mineralization effect of recycled aggregate loaded microorganisms, and efficient crack repair and mechanical property improvement are achieved. The method specifically comprises the steps of microbiological treatment and loading, fiber surface modification and optimization, self-healing concrete preparation and the like. The recycled aggregate is used for fixing microorganisms and providing a mineralization environment, the interface bonding capacity is enhanced through alkali treatment fibers, and the calcium carbonate deposition efficiency is remarkably improved. The prepared self-healing concrete has excellent mechanical strength and compactness, and the repairing performance is also obviously improved. The method is simple in process and controllable in cost, the utilization of the recycled aggregate conforms to the concept of green building materials, and the method can be widely applied to preparation of microbial concrete and has remarkable environmental protection value and application prospects.

The invention discloses an easily absorbable organic calcium powder containing mineral elements and a preparation process thereof, and the raw materials comprise, by weight, 50-70 parts of an organic calcium source, 20-30 parts of a plant protein source, 5-10 parts of a polybasic amino acid chelate, 0.01-0.03 part of vitamin D3, 1-3 parts of trace mineral elements, 0.5-1.5 parts of compound protease, 0.1-0.3 part of a food-grade surfactant, and 100-150 parts of deionized water. The invention relates to the technical field of nutritional supplements. According to the mineral element-containing easy-to-absorb organic calcium powder and the preparation process, vegetable protein is converted into amino acid through biological enzymolysis, the amino acid and calcium carbonate are subjected to a chelation reaction to generate amino acid chelated calcium, and compared with traditional organic calcium, chelated calcium is more easily absorbed by human intestinal tracts; meanwhile, calcium, magnesium and phosphorus are synergistically matched, magnesium can activate vitamin D3, the vitamin D3 further promotes absorption of calcium, phosphorus and calcium form a reasonable proportion, deposition of calcium in bones is enhanced, and calcium ions can be absorbed in intestinal tracts without depending on gastric acid by adopting a bicyclic stable chelating structure.

A method of analyzing computed tomography (CT) images comprises receiving an initial CT image of an object, identifying calcium-free regions and a calcified region in the initial CT image of the object, generating a calcium-free image patch, and applying the calcium-free image patch to the initial CT image patch to produce a final CT image. The initial CT image shows a calcium deposit and a target structure in the object. The calcified region in the initial CT image shows the calcium deposit in the object obscuring a portion of the target structure. The calcium-free regions show the remaining portions of the target structure. The calcium-free image patch corresponds to the calcified region in the initial CT image. The final CT image shows the calcium-free image patch and the calcium-free region from the initial CT image. The calcium-free image patch is generated and applied using a convolutional neural network.

The application discloses a kind of light illumination methods for laying hens in later egg production stage.The method comprises: in the breeding process of laying hens in later egg production stage, using light source to emit blue light illumination or blue light and white light illumination to irradiate laying hens, so that the illumination can improve eggshell quality.The method of the application can up-regulate the expression of CaBP-D28k gene in eggshell gland of laying hens in later production stage, improve the ability of eggshell calcium deposition, regulate the secretion of parathyroid hormone PTH, calcitonin CT and other hormones, maintain the balance of blood calcium and blood phosphorus, and effectively improve the strength, thickness and weight of eggshell, so as to improve the eggshell quality of eggs produced by laying hens.The application can improve the calcium and phosphorus absorption capacity of laying hens, maintain the balance of calcium and phosphorus metabolism, and has low energy consumption, green energy-saving and environment-friendly advantages.

The application discloses a self-sensing recycled aggregate cement stabilized macadam mixture and a preparation method thereof. The mixture comprises: aggregate, cement, liquid-solid carbonation modification solution and conductive component; wherein, the calcium chloride solution and sodium bicarbonate solution are used to replace mixing water and form calcium carbonate deposition products inside the mixture to regulate the pore structure and interface state of the recycled aggregate cement stabilized macadam mixture; the chopped carbon fiber is located in the mixture matrix after liquid-solid carbonation regulation and forms a conductive path with piezoresistive response characteristics, so that the mixture generates identifiable apparent volume resistivity change in the compression process. The application enables the mixture to maintain the basic road performance of the road base layer, generates identifiable apparent volume resistivity change in the compression process, is beneficial to damage feature point identification and electrical early warning before peak damage, and can be used for functional preparation of the recycled aggregate cement stabilized macadam base layer material.

The present invention discloses a rotator cuff patch, its preparation method and application, belonging to the technical field of composite biomaterials in medical engineering. The present invention prepares an oriented nanofiber patch by electrospinning a synthetic biodegradable high polymer and a natural bioactive protein of biological origin. Calcium silicate nanoparticles are in-situ coprecipitated at the distal end of the oriented nanofiber patch, and connective tissue growth factor is loaded at the proximal end of the oriented nanofiber patch to obtain the rotator cuff patch. It is a gradient composite rotator cuff patch with a tendon-promoting region loaded with connective tissue growth factor, a cartilage-promoting region co-loaded with connective tissue growth factor and calcium silicate, and a bone-promoting region with calcium silicate deposition. It can be used for the treatment of acute rotator cuff tears, effectively realizing multi-tissue regeneration of tendon, cartilage and bone, and then synchronously completing tendon-bone interface healing and promoting rotator cuff injury repair.

Use of diutan to enhance calcium deposition onto a tooth surface from a toothpaste.

The application belongs to the technical field of building material self-repairing concrete, and discloses a kind of microbial self-repairing crack concrete and a preparation method thereof, which comprises the following raw materials by weight: cement 350-370 parts, fly ash 55-70 parts, mineral powder 35-45 parts, fine aggregate 670-690 parts, coarse aggregate 1070-1090 parts, water 150-160 parts, water reducing agent 4.5-5.5 parts, microbial mineralization repair particles 22-34 parts and nutrient slow-release particles 14-22 parts. By loading Bacillus pasteurii on a light and porous carrier, and using sodium alginate and calcium chloride to cross-link and form a gel coating layer, microbial mineralization repair particles are prepared. At the same time, by using calcium lactate, urea and sodium silicate, nutrient slow-release particles are prepared. When cracks occur in the concrete and water enters, the microbial mineralization repair particles gradually release bacterial bodies, and the nutrient slow-release particles continuously release calcium sources and urea, so that Bacillus pasteurii induces the formation of calcium carbonate deposits and blocks the cracks, thereby improving the survival rate of bacterial bodies and the duration of repair, and improving the crack repair rate, the compressive strength recovery rate of the concrete.

The present application belongs to the technical field of natural active peptides, and particularly relates to a crab shell polypeptide as well as a preparation method and application thereof. The preparation method provided by the present application takes crab shells as raw materials, extracts crab shell polypeptides by using a hydrolysis, enzymolysis and alcohol precipitation method, controls the hydrolysis, enzymolysis and alcohol precipitation conditions in the extraction process, and makes the prepared crab shell polypeptides mainly composed of low-molecular-weight peptides and rich in glutamic acid, aspartic acid and lysine. Experiments prove that the crab shell polypeptide provided by the present application can enhance calcium deposition, improve OB activity, improve bone density, restore trabecular bone structure, maintain the integrity of bone tissue, inhibit OC function, has no obvious systemic toxicity, and can reestablish the osteoblast / osteoclast balance at the molecular level and restore calcium-phosphorus homeostasis, and therefore can be used for preparing medicines for preventing and treating osteoporosis or health-care foods for improving bone density, and has a good application prospect.

The invention discloses a shell-derived biphase calcium phosphate composite bone repair material as well as a preparation method and application thereof, and belongs to the field of biomedical materials. According to the preparation method, the shell-source calcium source and the calcium pyrophosphate are mixed, the biphase calcium phosphate (BCP) containing HAP and beta-TCP in different proportions is prepared through wet ball milling and solid-phase reaction, the reaction conditions are controlled in a simple mode, and the proportion of HAP to beta-TCP in the BCP is controllable. The biphase calcium phosphate prepared by the method is further compounded with sodium alginate, and the biphase calcium phosphate-sodium alginate composite scaffold is prepared by freeze drying and Cacrosslinking. The composite scaffold has a suitable porous structure, can exert in-vitro osteogenic induction activity and an in-vivo bone defect repair function, can significantly induce MC3T3-E1 cell alkaline phosphatase activity and induce calcium deposition, has osteogenic induction activity, can induce bone defect repair at an in-vivo rat skull defect part, and has a good application prospect. Excellent bone tissue engineering application prospects are shown.

Transcatheter devices include a distal end with a cavitation device. The cavitation device includes a pivot arm comprising a proximal portion pivotally mounted to a base of the cavitation device and configured to be pivoted between an open position where a distal portion of the pivot arm is at least partially positioned outside of a channel of the cavitation device. The pivot arm is further configured to be pivoted to a closed position where the distal portion of the pivot arm is at least partially positioned within the channel. Methods of removing calcification from a patient include orienting the cavitation device to target a calcium deposit at a treatment site. The methods further includes pivoting the pivot arm of the cavitation device from the open position to the closed position, wherein a pressure pulse wave is generated within a fluid that removes a portion of the calcium deposit.

The invention discloses a composite carbon cloth modification process for directionally promoting deposition of electrolytic calcium phosphate, which comprises the following steps: S1, immersing carbon cloth into an electroplating solution, applying a constant voltage of-1.2 V, and depositing in a water bath at 80 DEG C for 40 minutes to obtain a vertical ZnO nanoneedle; s2, taking out the carbon cloth from the electroplating solution, immersing the carbon cloth into a citric acid solution or an ethanol solution, and refluxing at 80 DEG C for 2 hours; s3, washing the carbon cloth with deionized water, and then carrying out vacuum drying at 60 DEG C; s4, immersing the carbon cloth subjected to carboxylation modification into a pre-polymerization solution; s5, eluting the carbon cloth by using a 0.5 M EDTA (Ethylene Diamine Tetraacetic Acid) solution; s6, immersing the carbon cloth into a mixed solution of the LDH precursor and urea, and carrying out hydrothermal reaction at 120 DEG C for 8 hours to generate an MgAl-LDH coating; s7, immersing the carbon cloth into the intercalation liquid, and carrying out ion exchange for 24 hours at the temperature of 60 DEG C; s8, washing the carbon cloth with deionized water, and drying and curing at 80 DEG C; the method has the advantage of promoting calcium phosphate deposition.

The invention discloses tailing and microorganism composite jet mortar and a preparation method thereof, and belongs to the technical field of microorganism mineralization, heavy metals in the tailing mortar are removed by utilizing a technology of generating calcium carbonate deposition through microorganism induction, and a microbial agent is coated by utilizing sodium alginate microcapsules, so that the tailing and microorganism composite jet mortar is prepared. The microbial agent is immobilized by utilizing the surface porous property and ion exchange capacity of the surface composite calcium-based diatomite to obtain the immobilized enzyme preparation, so that the microbial agent is prevented from being easily lost in mortar pouring; sodium alginate and calcium ions are cross-linked to form a microcapsule structure with a microbial agent as a capsule core, the microcapsule structure is loaded on the composite calcium-based diatomite, the microcapsule structure is formed by cross-linking the center of the calcium ions, carbonate generated by decomposition of urea by microorganisms can react with the calcium ions in the microcapsule, a calcium carbonate layer is deposited on the surface of the microcapsule, and the calcium carbonate layer is formed. The structural strength of the microcapsule is further improved.

The invention discloses a compound smelting aid and a refining process of carbonated lead plaster, and belongs to the technical field of secondary lead smelting, that is, the compound smelting aid is added in the refining process, and the compound smelting aid contains a porous carbon-loaded alkaline desulfurizer with large specific surface area and porosity, so that the contact efficiency between the compound smelting aid and sulfide can be increased; the reduction coke rate in the refining process is reduced, the lead recovery rate is improved, and the sulfur dioxide yield is low; calcium oxide loaded on the surface of the coal gasification slag-based porous carbon is desulfurized to generate calcium sulfate to be deposited on the surface, carbon monoxide molecules are adsorbed to the top ends of calcium atoms on the surface of the calcium sulfate under the oxygen-enriched condition through the electrostatic interaction and the physical adsorption effect of the coal gasification slag-based porous carbon, and then carbon monoxide and oxygen atoms attract each other; and carbon dioxide is formed and then is adsorbed on calcium atoms on the surface in an inclined manner, so that conversion from carbon monoxide to carbon dioxide is realized.

A dentifrice composition comprising a calcium carbonate abrasive and a sodium olefin sulfonate surfactant for enhanced calcium deposition.

The invention relates to the technical field of probiotics, in particular to a lactic acid bacteria mixture for preventing and delaying heart valve calcification and application of the lactic acid bacteria mixture, and the lactic acid bacteria mixture comprises a saliva combined lactobacillus BR202 strain, a cheese paracasei BR176 strain, a bifidobacterium animalis subsp. Lactis BR621 strain and a plant lactobacillus PQQ-1 strain. According to the invention, human valvular interstitial cells are induced to generate osteogenic differentiation, so as to simulate pathological changes in calcified aortic valve diseases for evaluation, and the results of calcium salt deposition of the human valvular interstitial cells and osteogenic differentiation experiments of the human valvular interstitial cells prove that the human valvular interstitial cells can be used for simulating the pathological changes in the calcified aortic valve diseases. The lactic acid bacteria mixture can effectively delay calcium salt deposition of human valvular interstitial cells and osteogenic differentiation of the human valvular interstitial cells, so that the lactic acid bacteria mixture has the physiological activity function of preventing and delaying cardiac valve calcification, and can be used for preparing medicines or food compositions for preventing and delaying cardiac valve calcification.

The proposed subject matter is intended to alleviate multitudes of home and commercial swimming pool owners from either living with unsightly calcium silicate deposits on their pool walls and / or spending thousands of dollars annually on professional cleaning of their walls to preserve their pool's beauty. The Water Wash System utilizes existing or new pool equipment and infrastructure feeding a simple connection and install of minor tubing on the interior perimeter walls of the pool to mitigate formation of calcium silicate deposit formation.

This invention discloses the application of limonene in the preparation of drugs for alleviating or improving vascular calcification. Intervention with limonene in CKD mouse models and primary vascular smooth muscle cells (VSMCs) significantly inhibited aortic calcification in CKD mice, significantly reduced high-phosphorus-induced osteogenic differentiation and calcium deposition in VSMCs, inhibited reactive oxygen species (ROS) production, reduced cellular iron accumulation, and alleviated ferroptosis. The findings of this application are highly likely to provide effective clinical drugs for the prevention and treatment of vascular calcification in CKD.

The present invention provides a non-surgical crushing and suctioning removal apparatus comprising: an insertion guide (100) which is inserted into the human body so as to provide a passage; and a removal apparatus (200) which is inputted into the human body through the insertion guide (100) so as to remove calcium deposits, wherein the removal apparatus (200) comprises a detachable bit (300). The present invention has the bit passing through the insertion guide and projecting into the human body and thus has the advantages of being capable of minimizing damage to the human body caused by movement of the bit, and increasing the recovery speed.

The application discloses tailings and microbial composite injection mortar and a preparation method thereof, and belongs to the technical field of microbial mineralization. The calcium carbonate deposition technology induced by microorganisms is used to remove heavy metals in tailings mortar. The microbial inoculum is coated by sodium alginate microcapsules. The microbial inoculum is fixed by using the porous properties and ion exchange capacity of the surface composite calcium-based diatomite surface. The immobilized enzyme preparation is obtained, so that the microbial inoculum is prevented from being lost easily in mortar pouring. The sodium alginate and calcium ions are crosslinked to form a microcapsule structure with the microbial inoculum as a capsule core, and the microcapsule structure is crosslinked with calcium ions as the center. The calcium carbonate layer is deposited on the surface of the microcapsule by the reaction between the calcium ions in the microcapsule and the carbonate generated by the decomposition of urea by the microorganism, so that the structural strength of the microcapsule is further improved.

The invention belongs to the technical field of natural active peptides, and particularly relates to a crab shell polypeptide as well as a preparation method and application thereof. According to the preparation method provided by the invention, crab shells are used as raw materials, crab shell polypeptides are extracted by adopting hydrolysis, enzymolysis and alcohol precipitation methods, and the prepared crab shell polypeptides mainly consist of peptides with medium and low molecular weights and are rich in glutamic acid, aspartic acid and lysine by controlling hydrolysis, enzymolysis and alcohol precipitation conditions in the extraction process. Experiments prove that the crab shell polypeptide provided by the invention can enhance calcium deposition, improve OB activity, improve bone mineral density, recover a bone trabecula structure, maintain the integrity of bone tissues and inhibit an OC function, does not have obvious systemic toxicity, can reestablish osteoblast / osteoclast balance at a molecular level, recovers a calcium-phosphorus steady state, and has a good application prospect. Therefore, the compound can be used for preparing products for preventing and treating osteoporosis and has a good application prospect.

The invention relates to the technical field of control scheme design of an LED light source capable of supplementing calcium, in particular to a control method and system of the LED light source capable of supplementing calcium. The method comprises the following steps: acquiring vitamin D synthesis demand parameters of a user; calculating a target UVB radiation dose based on the parameters; and the output of the UVB-LED is dynamically adjusted. The core innovation lies in that firstly, a serum index-optical dose dynamic mapping model is established, and accurate personalized control is realized through a metabolic coefficient compensation mechanism; secondly, a segmented power strategy is adopted to cooperate with red light irradiation, so that the calcium deposition efficiency is improved while the skin safety is guaranteed; meanwhile, position offset compensation and erythema effect monitoring are integrated, and dose reliability in a mobile scene is ensured. Finally, a closed-loop control system of detection-calculation-execution-optimization is formed, and the calcium supplement efficiency and safety of different crowds are remarkably improved. The technology is suitable for the fields of household illumination, medical rehabilitation, health management and the like.