115 results about "Carcainium Chloride" patented technology

The invention discloses a composite inducer for promoting adhesion and metamorphosis of marine bivalve mollusk larvae and an application method of the composite inducer. The composite inducer for promoting adhesion and metamorphosis of the marine bivalve mollusk larvae comprises glutamine, glutamic acid, potassium chloride, calcium chloride and taurine, and the concentration ratio of the glutamine to the glutamic acid to the potassium chloride to the calcium chloride to the taurine is 1: 1: 2 * 10: 1.7 * 10: 4. According to the application, glutamine, potassium ions, calcium ions, glutamic acid and taurine are matched, the application effect of the glutamine, the potassium ions, the calcium ions, the glutamic acid and the taurine in the aspect of improving the attachment and metamorphosis rate of the shellfish larvae is defined, the technical blank of multi-component cooperative regulation and control of the attachment and metamorphosis of the shellfish at present is filled, a new solution is provided for bivalve shellfish fry production, and the application prospect is wide. The method is of great significance in promoting healthy development of the mariculture industry.

The invention discloses a composition for treating intractable skin infection, sores and ulcers and inflammation as well as a preparation method and application of the composition, and belongs to the technical field of functional compositions. The composition is prepared from the following components in parts by mass: 1 to 5 parts of baicalin, 0.5 to 3 parts of antibacterial alkaloid, 2 to 6 parts of asiaticoside, 3 to 8 parts of salvianolic acid B, 1 to 4 parts of gallic acid, 5 to 10 parts of rhizoma bletillae polysaccharide, 3 to 10 parts of konjac glucomannan, 3 to 5 parts of chitosan, 8 to 20 parts of glycerol, 0.5 to 2 parts of genipin, 1 to 3 parts of calcium chloride, 1 to 3 parts of laurocapram and 40 to 80 parts of water. The antibacterial alkaloid comprises berberine or phellodendrine. Based on deep understanding of an intractable skin pathological mechanism, the components are scientifically matched, and the composition shows a remarkable synergistic effect in in-vitro antibacterial, anti-biofilm and anti-inflammatory experiments. The preparation process is simple, low in cost and suitable for industrial production.

The invention discloses a method for adjusting the pore opening degree of Shanghai green, and belongs to the technical field of plant detection. Shanghai leaves are placed in 20mL of open liquid containing (1) 0.5% potassium chloride and 100 [mu] M / L calcium chloride or (2) 0.5% potassium chloride and 50 [mu] M / L brassinolide or (3) 0.5% potassium chloride and 10 [mu] M / L cytokinin or (4) 0.5% potassium chloride and 5 [mu] M / L gibberellin or (5) 0.5% potassium chloride and 100 [mu] M / L methyl jasmonate, culture is performed under illumination, and the illumination time is set to be 5h, so that the pore opening degree of Shanghai is remarkably increased. Compared with a control group (containing 0.5% of potassium chloride), the pore openness of the treatment is respectively increased by 33.5%, 43.5%, 43.4%, 27.1% and 70.2%. The method disclosed by the invention lays a technical foundation for rapidly screening out the exogenous environmental stimulation factor (environical stimuli) capable of increasing the opening degree of the pore.

The invention discloses a composition for relieving, repairing and promoting skin regeneration as well as a preparation method and application of the composition. The composition is prepared from the following raw materials in parts by weight: 0.1 to 5 parts of mandelic acid, 0.5 to 10 parts of a cynanchum atratum extract, 1 to 8 parts of a xylitol compound, 0.5 to 15 parts of regenerated silicon, 1 to 10 parts of a starfish regeneration repair factor, 0.3 to 1.5 parts of trimethylolpropane tri (3-mercaptopropionic acid) ester, 0.05 to 0.5 part of calcium chloride, 0.1 to 1 part of an additive, 0.2 to 2 parts of chitosan-polycaprolactone, 0.2 to 1 part of a pH regulator and 5 to 15 parts of a solvent. 0.3 to 0.8 part of an antioxidant and 3 to 10 parts of a humectant; the additive is hyaluronic acid or formylated hyaluronic acid. Through a multi-channel synergistic effect, the effects of relieving, repairing and promoting skin regeneration are improved.

The invention relates to a calcium chloride injection and a production method thereof, and relates to the technical field of calcium chloride injection production, a solvent of the calcium chloride is water for injection, and the injection contains the following components: 80-120 g / L of calcium chloride; the concentration of the water for injection is 800-1200 g / L; hydrochloric acid is a proper amount of component for adjusting the pH value to 5.3-5.8; and the sodium hydroxide is a proper amount of component used for adjusting the pH value to 5.3-5.8. According to the calcium chloride injection and the production method thereof, the problems of solution turbidity, calcium ion precipitation, oxidative degradation and the like caused by insufficient dissolution and local supersaturation of calcium chloride in the prior art are effectively solved by accurately controlling the concentration of calcium chloride and adopting a nitrogen protection dissolution process. Meanwhile, a 0.22 mu m polyethersulfone two-stage filter element series connection filtering process, an integrity testing process with the foaming point larger than or equal to 3450 kPa and a sterilization and leak detection integrated process are adopted, the sterility guarantee level and stability of the product are remarkably improved, the endotoxin of the finished product is smaller than 0.5 EU / mL, the number of visible foreign matter larger than or equal to 10 mu m is reduced by larger than or equal to 60%, and the clinical safety and effectiveness of the injection are ensured.

The invention discloses a method for enhancing adhesion ability of coral larvae after enhancement and release. According to the method, coral larvae (such as coral plankton larvae) are exposed to a 40 mM calcium chloride (CaCl2) solution to be treated for 12-24 hours, and then enhancement and release are carried out. The treated larvae show remarkably enhanced adhesion ability after releasing, the accumulated adhesion rate within 3 days reaches 66.33% and is increased by 240% compared with that of a control group in the same period, and the average survival rate reaches 98.14%. Meanwhile, the transverse growth area and the budding number of attached larvae are remarkably increased, and the density of zooxanthellae, the photosynthetic efficiency and the chlorophyll content have no negative effects. The CaCl2 solution is used for successfully inducing the continuous attachment effect of the coral larvae, the method is easy and convenient to operate, low in cost and environmentally friendly, the attachment success rate of enhancement and release of the coral larvae and the subsequent growth performance of the larvae are remarkably increased, and the method is suitable for repairing and protecting a coral reef ecological system.

This invention relates to the field of biomaterial preparation technology, and in particular to a morphology-controllable mesoporous hydroxyapatite nanosphere, its preparation method, and its applications. The preparation method includes: S1, mixing an aqueous solution of pyridoxal phosphate with an aqueous solution of calcium chloride, adjusting the pH of the mixed solution to 7-11 to obtain a precursor solution; S2, placing the precursor solution in a microwave reactor for reaction to obtain mesoporous hydroxyapatite nanospheres. The preparation method provided by this invention is simple, the reaction conditions are easily controlled, and it is highly safe and reliable. It enables precise control of the morphology and particle size of the hydroxyapatite microspheres, and the prepared product exhibits excellent biocompatibility and structural regularity. It has good industrial application prospects in the field of biomedical implants such as bone tissue repair and is suitable for large-scale production.

The invention relates to a magnesium- aluminium layered double hydroxide (Mg-Al LDH) based filler product comprising boron and functionalised with phosphocholine chloride calcium salt tetrahydrate (PC), the synthesis method of this filler product, and obtaining a new material by preparing a composite material of this filler product, which has antibacterial activity, with a thermoplastic polymer or thermosetting polymer. In the production of the composite material that is the subject of the invention, as the polymer, preferably unsaturated polyester resin (DPes) is used. The composite material comprising the filler product of the invention has the feature of preventing bacterial adhesion / biofilm formation. Said material has the potential to be used for various applications, including medical devices, industrial processes, food production, storage and sales areas, food contact surfaces, areas requiring cleaning and hygiene, and different surface materials.

The invention belongs to the technical field of medicine preparation, and particularly relates to a fenoprofen calcium preparation method which comprises the following steps: 1) m-hydroxyacetophenone and bromobenzene generate an intermediate 1, namely m-phenoxyacetophenone under the action of alkali and cuprous iodide; 2) reacting the intermediate 1 with ethyl chloroacetate under the action of strong base, and then performing hydrolysis and decarboxylation reaction to generate an intermediate 2, namely 2-(3-phenoxy phenyl) propionaldehyde; the invention discloses a preparation method of fenoprofen calcium, which comprises the following steps: (1) preparing fenoprofen, (2) preparing fenoprofen, (3) carrying out oxidation reaction on an intermediate 2 to obtain fenoprofen, (4) reacting fenoprofen with a sodium hydroxide solution to obtain fenoprofen sodium, and (5) salifying fenoprofen sodium with a calcium chloride solution to obtain fenoprofen calcium.

This invention discloses a biological reinforcement and corrosion protection process for bridge pier cracks, comprising: S1, extracting calcium ions from South China Sea calcareous sand to obtain a calcium chloride solution; S2, installing a reaction sleeve mold reaction device at the location of the cracked bridge pier, filling the gap between the bridge pier and the mold reaction device with South China Sea calcareous sand particles in three batches, and injecting bacterial solution, urea, and the calcium chloride solution obtained in step S1 in batches for cyclic infusion, and repeating the cyclic infusion process. This invention, by using the calcium chloride solution extracted from South China Sea calcareous sand and the bacterial solution for cyclic infusion, can achieve biological reinforcement of bridge pier cracks, resulting in better compatibility and permeability with the bridge pier substrate material. It can penetrate even the smallest cracks, and the generated calcium carbonate crystals can effectively and better bond with the bridge pier substrate material, playing a role in filling and bonding cracks. It also has the advantages of low cost, convenient material sourcing, few and safe byproducts, and no pollution to the marine environment.

The application discloses an environment-friendly scale inhibitor for a boiler and a preparation method thereof. According to weight parts, the scale inhibitor comprises the following raw materials: 25-35 parts of a branched corrosion and scale inhibitor, 30-40 parts of polyvinyl alcohol, 17-24 parts of sodium alginate, 3-7 parts of glutaraldehyde, 5-10 parts of calcium chloride and 1000-2100 parts of water. The scale inhibitor has good corrosion and scale inhibition effects, and can effectively prolong the service life of the boiler.

The invention discloses a zymolyte microcapsule and a preparation method thereof, and belongs to the technical field of microcapsules. According to the method, calcium chloride is added in the process of preparing the sodium alginate solution, so that the stability of the wall material is improved, the loss of polypeptide in the homogenizing process can be reduced, the retention rate of the polypeptide is increased, and the loss of active substances is reduced. Positively charged calcium ions (Ca < 2 + >) can be strongly attracted by negatively charged carboxyl (-COO <->) on a sodium alginate chain to form a water-insoluble three-dimensional network structure. A large number of primary amino groups exist on a molecular chain of chitosan, a large number of carboxyl groups exist on a molecular chain of sodium alginate, and the primary amino groups and the carboxyl groups can form a polyelectrolyte membrane through positive and negative charge attraction, so that efficient embedding and intestinal targeted release of zymolyte are realized, and the stability and bioavailability of peptide are remarkably improved; and a technical basis is provided for developing functional foods based on the meat hydrolysate.

The invention belongs to the technical field of medicinal preparations, and particularly relates to a method for producing medicinal calcium carbonate with low content of chlorine, barium, magnesium and iron ions, which comprises the following steps: adding purified water into a general zone reaction kettle 1, adding calcium oxide while stirring, and reacting to obtain calcium hydroxide; dropwise adding concentrated hydrochloric acid into a system of the reaction kettle 1 under the condition of controlling the temperature, and after dropwise adding, carrying out heat preservation reaction until the end to obtain a calcium chloride solution; adding purified water into a general area reaction kettle 2, then adding ammonium carbonate, and stirring until the solution is clear to obtain an ammonium carbonate solution; filtering the ammonium carbonate solution in the reaction kettle 2 through a millipore filter membrane to enter a reaction kettle 3 in a clean area, filtering the calcium chloride solution in the reaction kettle 1 through the millipore filter membrane, dropwise adding the calcium chloride solution into the reaction kettle 3, and centrifuging to obtain a calcium carbonate wet product after the heat preservation reaction is finished; adding purified water into the calcium carbonate wet product, pulping, centrifuging and drying to obtain the medicinal calcium carbonate. On the basis of a double decomposition method, the method has the advantages of simplicity in operation, low cost, capability of realizing mass production and the like.

The invention discloses a preparation method of a high-absorptivity calcium supplement of vitamin D3 (VD3) and casein phosphopeptide chelated calcium (CPP-Ca), which comprises the following steps: firstly, dissolving casein phosphopeptide (CPP) in ultrapure water, adding calcium chloride, adjusting the pH value, stirring and reacting at a certain temperature to generate CPP-Ca, then precipitating by using ethanol, washing for multiple times to remove free calcium ions, and drying to obtain the high-absorptivity calcium supplement of vitamin D3 (VD3) and casein phosphopeptide chelated calcium (CPP-Ca). Centrifuging, collecting the precipitate, and freeze-drying to obtain purified CPP-Ca; the preparation method comprises the following steps: preparing CPP-Ca into a solution, adjusting the pH value, dropwise adding VD3 dissolved in ethanol into the solution, stirring and mixing at room temperature under a certain concentration to finally form the VD3 and CPP-Ca compound, and the compound prepared by the method can significantly promote calcium absorption and effectively improve the stability of VD3 and CPP.

The invention provides a high-temperature-resistant high-density solid-free water-based completion fluid as well as a preparation method and application thereof. The water-based completion fluid is prepared from the following components in parts by weight: 29 to 42 parts of water, 22 to 38 parts of phosphate, 12 to 17 parts of potassium formate, 8 to 12 parts of zinc bromide, 3 to 7 parts of calcium chloride, 0.5 to 2 parts of a flow pattern regulator, 2 to 3 parts of a corrosion inhibitor and 1 to 2 parts of a filtrate reducer, the flow pattern conditioning agent comprises a Dristemp and / or a Driscal D, and the flow pattern conditioning agent comprises a Dristemp and a Driscal D; the filtrate reducer is polyanionic cellulose; and the density of the water-based completion fluid is 1.6-2.2 g / cm < 3 >. The high-temperature-resistant high-density solid-free water-based completion fluid disclosed by the invention realizes good high-temperature resistance, and still has good viscosity, fluidity, temperature resistance and corrosion resistance after being subjected to hot rolling for 16 hours at the high temperature of 220 DEG C.

The invention provides a bone repair material and a preparation method and application thereof, the bone repair material is composed of BMP protein (bone morphogenetic protein), carboxymethyl chitosan and calcium chloride, the carboxymethyl chitosan is crosslinked through calcium chloride to form nanoparticles, and the BMP protein is effectively loaded through electrostatic interaction; the bone repair material has good biocompatibility, biosafety and biodegradability, not only can effectively wrap and protect BMP protein from rapid degradation by enzyme, enhance in-vivo stability of BMP protein and realize continuous and controllable release of BMP protein, but also is beneficial to reduction of oedema and ectopic bone risks due to low-dose medication, and has good application prospects. And finally, by promoting angiogenesis, promoting bone tissue development and relieving inflammation, formation and repair of bones are achieved.

The present invention provides a dehumidifier that ensures a sealing effect and prevents leakage of the calcium chloride liquid hygroscopic agent. [Solution] The dehumidifier includes a dehumidifying bag. The dehumidifying bag includes a breathable sheet section 2 and a non-breathable strip section 3 on the breathable side, and a non-breathable sheet section 1 on the non-breathable side. A double-sided sealing section 6 is provided in the center of the dehumidifying bag, which partitions the internal space surrounded by the non-breathable sheet section and the breathable sheet section. This double-sided sealing section divides the internal space into a fragrance material storage section 4 and a moisture-absorbing material storage section 5. A non-breathable strip section is provided at the opening of the moisture-absorbing material storage section. By providing the double-sided sealing section, the internal space of the dehumidifying bag is partitioned, and the fragrance material and moisture-absorbing material can be filled separately, thereby preventing mutual interference. In addition, by providing the non-breathable strip section, heat welding of the same material is possible after filling with the moisture-absorbing material, ensuring a sealing effect and preventing leakage of calcium chloride liquid.

The invention relates to the technical field of collagen material degradation, and particularly discloses an in-vitro degradation method of a collagen biological material, which comprises the following steps: pretreating the collagen biological material to obtain a to-be-degraded sample; adding the enzymatic hydrolysate into a to-be-degraded sample, sealing, and degrading at 37 + / -2 DEG C to obtain a degradation solution; the enzymatic hydrolysate is prepared from the following components: 10 to 20 mg / L of collagenase, 3 to 6 mg / L of sorbitol, 1 to 2 mg / L of calcium chloride, 0.3 to 0.8 mg / L of dithiothreitol and the balance of a Tris-HCl buffer solution with the pH value of 7 to 8. The in-vitro degradation method of the collagen biological material provided by the invention has the advantages of good degradation stability, small batch-to-batch difference and the like, and can be used for investigating the degradation behavior of the collagen biological medical device against collagenase in vivo, so that research and development and quality control of the collagen biological medical device are realized.

The invention discloses a preparation method of a stone cultural relic surface reinforcing material. The preparation method comprises the following steps: S1, dissolving calcium chloride in deionized water to obtain a CaCl2 solution; s2, anion exchange resin is added into the CaCl2 solution under the stirring condition, stirring reaction is carried out for 30-90 min, Cl <-> is replaced with OH <->, nano calcium hydroxide is generated in the solution, after the reaction is finished, the anion exchange resin is removed through separation, and nano calcium hydroxide turbid liquid is obtained; and S3, mixing the nano calcium hydroxide suspension with isopropanol to obtain the stone cultural relic surface reinforcing material. When the reinforcing material is applied, the reinforcing material is applied to the surface of the stone cultural relic in a brushing, spraying or soaking manner, and is naturally air-dried to volatilize the isopropanol and promote the Ca (OH) 2 to be carbonized to form CaCO3, so that the strength and the stability of the surface of the stone cultural relic are improved. The reinforcing material disclosed by the invention is simple in preparation process, easy in raw material obtaining, non-toxic and environment-friendly, and can effectively reinforce the stone cultural relics and reduce secondary damage.

The invention is applicable to the technical field of immobilized enzymes, and provides a method for immobilizing D-psicose-3-epimerase, which comprises the following steps: taking diatomite for activating treatment, firstly performing alkali soaking, and then performing acid soaking for 2.5-3 hours; preparing a sodium alginate solution and an enzyme solution of D-psicose-3-epimerase (D-psicose-3-epimerase); the activated diatomite and the enzyme liquid are mixed and adsorbed, then a sodium alginate solution is added, the mixed solution is dropwise added into a calcium chloride solution for crosslinking, and the immobilized D-psicose-3-epimerase is obtained. In conclusion, the prepared immobilized D-psicose-3-epimerase is high in enzyme activity recovery rate and protein immobilization rate, high in conversion rate when catalyzing fructose isomerization to prepare psicose, good in stability and reusability and capable of being used for continuously converting fructose to generate psicose.

The invention discloses an antibacterial material with calcium ion mediation and photo-thermal effects as well as a preparation method and application thereof, and belongs to the technical field of biological medicines. And the antibacterial material is a calcium ion loaded porous covalent organic framework polymer BQ-Ca-COF. The preparation method comprises the following steps: carrying out solvothermal reaction on 2, 3, 5, 6-tetraaminocyclohexane-2, 5-diene-1, 4-diketone and cyclohexanehexone octahydrate to obtain a porous covalent organic framework polymer; and under a protective atmosphere, carrying out metallization reaction on the porous covalent organic framework polymer and calcium chloride to obtain the BQ-Ca-COF. The BQ-Ca-COF prepared by the invention has a synergistic effect of controllable release of Ca < 2 + > and photo-thermal irradiation, has good photo-thermal conversion under irradiation of laser with the wavelength of 638 nm, and can release calcium ions under irradiation of infrared (NIR) laser, increase the permeability of a bacterial membrane and synergistically enhance the efficiency of subsequent photo-thermal action, so that gram positive and negative bacteria are effectively killed.

The invention discloses an enzymatic cascade nanogel system targeting Lawsonia intracellularis and a preparation method of the enzymatic cascade nanogel system. The enzymatic cascade nanogel system comprises the following components: 0.05-2% of sodium alginate; 0.02 to 0.3 percent of calcium chloride; 2 to 6 percent of N, O-carboxymethyl chitosan; 0.2 to 1% of D-mannosamine hydrochloride; 0.05 to 0.2 percent of tilmicosin; 0.0005 to 0.002 percent of cerium dioxide nano enzyme; and 0.0005 to 0.002 percent of glucose oxidase. The enzymatic cascade nanogel system provided by the invention has a dual gel structure of a dynamic covalent bond core and an ionic bond shell, and can realize targeted programmed release of tilmicosin; the endocytosis of host cells on the enzymatic cascade nanogel system is actively enhanced, the intracellular transport capacity of tilmicosin is improved, and the intracellular drug concentration is improved; glucose oxidase consumes glucose to generate gluconic acid and H2O2 so as to realize'hunger therapy 'on Lawsonia intracellularis; h2O2 generated by decomposing glucose oxidase by cerium dioxide nano-enzyme generates high-concentration oxygen at an infected part, so that the living environment of the intracellular Lawsonia is deteriorated.

The invention discloses a method for preparing food-grade Janus particles based on confinement template synergistic sequential curing. The method comprises the following steps: firstly, dissolving riboflavin and hydrogen peroxide in a zein solution to serve as a water phase, and dispersing in an oil phase to prepare zein droplets; meanwhile, preparing sodium alginate liquid drops by taking a sodium alginate solution as a water phase; and mixing the two liquid drops to construct the Janus liquid drop based on a liquid drop collision method. Subsequently, the zein compartment in the Janus droplet is cured by ultraviolet irradiation; and further mixing the sodium alginate with calcium chloride liquid drops to solidify the sodium alginate compartment in the Janus liquid drops to obtain the food-grade Janus particles. The particle size of Janus liquid drops is reduced to nanoscale through gradient energy input, and food-grade Janus nanoparticles are constructed by using a sequential curing strategy. The construction method of the food-grade Janus particles is easy to operate and high in yield, and has good application prospects in the fields of food, medicine, cosmetics and the like.

To provide a composition for oral cavity containing an enzyme, excellent in stability of the enzyme, and capable of improving harsh taste.SOLUTION: The composition for the oral cavity comprises (A) sodium fluoride, (B) one or more kinds selected from the group consisting of calcium chloride, calcium gluconate, calcium lactate and calcium pantothenate, (C) one or more kinds selected from the group consisting of condensed phosphoric acids and their alkali metal salts and (D) an enzyme.SELECTED DRAWING: None

This invention discloses a biodegradable nanocomposite preservation film with antibacterial and gas-regulating effects, belonging to the field of food preservation technology. The nanocomposite preservation film is prepared by the following method: water, glycerol, cellulose nanofiber dispersion, sodium carboxymethyl cellulose solution, and calcium chloride solution are added sequentially to okra mucilage and stirred until homogeneous; then, chitosan porous microspheres loaded with curcumin are added and stirred until homogeneous; the mixture is degassed and cast into a mold, then dried in an oven to form a peelable nanocomposite preservation film. This invention uses okra mucilage and chitosan porous microspheres as substrates, and curcumin as the active ingredient, to construct a biodegradable nanocomposite preservation film with antibacterial and gas-regulating effects. This preservation film not only spontaneously constructs a low-oxygen, moderately carbon dioxide microenvironment inside the packaging through asymmetric gas selective permeability, but also achieves long-term sustained release of the antibacterial molecule curcumin, resulting in excellent preservation effects.

Provided is an oral composition having good fluorine ion retention properties and good low-temperature storage stability. An oral composition containing: (A) sodium fluoride; (B) one or more substances selected from the group consisting of calcium lactate, calcium gluconate, calcium chloride, and calcium pantothenate; (C) one or more substances selected from condensed phosphoric acid and alkali metal salts thereof; and (D) isopropyl methyl phenol.

The invention discloses an oxygen supply type g-C3N4-based photosensitizer and a preparation method thereof, and the method comprises the following steps: firstly calcining cyanuric acid to prepare carbon nitride, then mixing with a ferric nitrate ethanol solution, drying, and calcining in a mixed atmosphere of O2 and N2 to obtain Fe2O3 / g-C3N4; adding absolute methanol, adding calcium chloride and a sodium hyaluronate solution, and then sequentially adding H2O2 and ammonia water to react to obtain the photosensitizer. According to the CaO2 / FeCN photosensitizer with the core-shell-like structure prepared by the method, the overall size is optimized by sodium hyaluronate, and penetration of a blood brain barrier is facilitated. CaO2 is introduced to realize oxygen self-supply, so that the O2 concentration of the system is improved, and the limitation of oxygen deficit on PDT is relieved. The EPR test shows that the ROS yield is excellent, and the PDT belongs to type I PDT. Cell and animal experiments show that the photosensitizer has a good tumor cell killing effect under illumination, almost all tumors are killed in tumor mice through PDT tests, the biocompatibility and the safety are good, and the existing technical problems are effectively solved.

The invention provides an artificial saliva spray. The artificial saliva spray is prepared from the following components in percentage by mass: 0.001 to 0.003 percent of hydrogenated castor oil, 0.02 to 0.07 percent of xanthan gum, 0.01 to 0.03 percent of cyclodextrin, 0.01 to 0.02 percent of calcium chloride, 0.01 to 0.05 percent of dipotassium phosphate, 0.1 to 0.15 percent of potassium chloride, 0.05 to 0.1 percent of sodium chloride, 0.004 to 0.006 percent of magnesium chloride and the balance of water. The artificial saliva suitable for the spray is provided, the dosage is accurate, the good oral cavity adhesion capacity is achieved, and the effect maintaining time is long.

This invention discloses a method for preparing a calcium-based high-temperature heat-conducting fluid, relating to the field of heat transfer technology for grain drying equipment. The method includes the following steps: S1: Dissolving samarium bromide and calcium chloride in deionized water to obtain a basic solution; S2: Dissolving venereal gum in deionized water, then sequentially adding sodium dodecylbenzenesulfonate, triethanolamine, a composite corrosion inhibitor, a scale remover and preservative, and sodium silicate, stirring to dissolve and obtain an auxiliary agent solution; S3: Combining the basic solution and the auxiliary agent solution, adding nano-titanium dioxide, and dispersing thoroughly and evenly; S4: Adding dimethyl silicone oil and stirring to defoam, obtaining the calcium-based high-temperature heat-conducting fluid. The advantages of this invention compared to existing technologies are: providing a calcium-based high-temperature heat-conducting fluid with good high-temperature stability, high heat transfer efficiency, and ease of preparation and application, along with its preparation method and application in grain drying heat pipes.

This invention provides a two-component flame retardant, its preparation method, and its application, relating to the technical field of flame retardants. The two-component flame retardant comprises component A and component B; wherein component A comprises starch phosphate ester, calcium chloride, surfactant, propylene glycol, aerogel, and water; wherein component B comprises bone glue and water. This two-component flame retardant is environmentally friendly, non-corrosive, and has no impact on plant growth. It can be used on trees, leaves, paper, walls, and insulation boards, exhibiting excellent performance. It demonstrates good weather resistance when used in rainy seasons in the south, cold regions in the north, and hot summers, without affecting product quality while providing excellent protection.