1922 results about "Trisodium citrate" patented technology

Implanted catheters are locked with a solution comprising a lower alcohol, typically ethanol, propanol, or butanol, in a range from 1% to 99% by volume, and an additive in a range from 1% to 99% by volume, the additive comprising an anti-microbial, typically taurolidine or triclosan, or an anti-coagulant, typically riboflavin, sodium citrate, ethylene diamine tetraacetic acid, or citric acid. The use of an alcohol and additive solution can effectively reduce fouling of the catheter, particularly clotting and thrombus in intravascular catheters, as well as eradicate existing infections and / or reduce the risk of potential infections. Existing infections and / or potential infections can be further reduced by employing a catheter body which permits an anti-microbial solution to penetrate into the catheter body and preferably through the catheter into tissue surrounding the implanted catheter.

The invention discloses a preparation method for composite nano particcle of superparamagnetic ferric oxide. Wherein, adding ammonia and sodium citrate synchronously and speed controlled to make ions of Fe3+ and Fe2+ coprecipitate and form Fe3O4 nano particle with water-phase dispersion surface adsorbed by citric acid radical that can be substituted by multi chemical functional group on basic condition as crystal seed for sodium citrate-goden chloric acid reduction reaction and form SPION nano particle.

The blood collection, processing and transfer by separation of discrete components containing additional citrate (at least about trisodium citrate 9% w / v) in one or other of collection or processing bag provides for enhanced yield and purity of cryoprecipitate. Inhibiting the activation or denaturation of blood components including blood cells and plasma proteins and with the removal of the activated and denatured components thereby improving safety and efficacy of end products. The inventive process is particularly suited to an improved extraction process to yield concentrated clotting factors from single donors or limited pools without use of chromatography. Following extraction the remaining cryoprecipitate can advantageously be formed into a fibrin fabric used in surgeries and in the treatment of wounds.

The invention discloses a method for preparing cauliflower nano gold-silver alloy with a surface-enhanced Raman scattering activity, which comprises: mixing 0.001mol / L solution of silver nitrate and 0.001mol / L solution of sodium phytate in a volume ratio of 30:1; heating the mixed solution till the mixed solution boils and keeping the temperature between 90 and 100 DEG C; adding 1 percent solution of trisodium citrate in an amount which is one fiftieth of the volume of the solution of silver nitrate to perform an reaction at 90 to 100 DEG C for 3 hours to prepare nano silver cluster dispersion stabilized by phytic acid; and transferring 12 to 17 milliliters of dispersion into a 25 milliliter beaker, heating the solution to 45 to 65 DEG C with stirring, slowing dripping 1.5 to 2.4 millimeters of 0.01 mol / L solution of chloroauric acid and stirring the mixed solution for 25 to 35 minutes to obtain a sample. The obtained cauliflower nano gold-silver alloy nanoparticles can keep stable for more than 6 months and has high signal repeatability and a surface-enhanced Raman effect. The preparation method is simple and low in cost.

The invention relates to a preparation method of polystyrene / gold composite microspheres, which comprises the following steps: modifying polystyrene microspheres with a silane coupling agent, mixing with a chloroauric acid solution, and heating to carry out ionic selfassembly, wherein gold ions are fixed to the surface of the polystyrene microspheres through gold-nitrogen bonds; and after the solution is boiling, adding trisodium citrate to reduce the gold ions adsorbed onto the amino group in situ, thereby generating the core-shell structure in which a gold nanoparticle is coated on each polystyrene microsphere. The size of the gold particles and the coverage percentage of the gold particles on the polystyrene microspheres are controllable to some extent.

The invention discloses a selenium-enriched microorganism preparation prepared from fermentation of a mixed bacterium liquid. The selenium-enriched microorganism preparation consists of the following raw materials: sodium selenite, complex trace elements, monopotassium phosphate, urine, peptone powder, NaCl, NaOH, NaNO3, NaCl, NH4Cl, K2HPO4, a beef extract, glucose, starch, calcium carbonate, amino acid, potassium nitride, ferrous sulfate, magnesium sulfate, trisodium citrate, a biochemical enzyme and a mixed bacterium liquid; and the mixed bacterium liquid is a mixed liquid of the bacterium liquid of bacillus amyloliquefaciens, the bacterium liquid of bacillus subtilis, the bacterium liquid of bacillus licheniformis, the bacterium liquid of bacillus thuringiensis and the bacterium liquid of bacillus mucilaginosus. The mixed bacterium liquid applicable to the selenium-enriched microorganism preparation disclosed by the invention is conducive to microorganisms in soil, and can be used for increasing the quantity of the microorganisms in the soil and enhancing the activity of the microorganisms in the soil. Due to vital activity and metabolite, the strain is an agricultural product which can cause special fertilizer effect, growth regulating effect, effect of prevention and control of plant diseases and pests, soil bioremediation and the like to crops.