7 results about "Magnesium acetate" patented technology

This invention discloses a reaction tube for recombinase polymerase amplification (RPA), belonging to the field of nucleic acid detection. The reaction tube of this invention includes a tube body and a cap separate from the tube body. The tube body contains lyophilized bulbs or lyophilized powder containing premixed nucleic acid detection reagents, and the cap contains lyophilized powder containing an activator. The tube body and cap are sealed with a thin film. The lyophilized bulbs or lyophilized powder containing the premixed nucleic acid detection reagents include: recombinase, single-stranded DNA-binding protein, strand displacement DNA polymerase, buffer components, ATP, ATP regeneration components, and dNTPs. The lyophilized powder containing the activator includes: potassium ions, magnesium ions, and polyethylene glycol. This invention enables magnesium acetate to stably adhere to the cap, solving the problem of easy spillage of the lyophilized activator in the cap. In use, only the nucleic acid of the sample to be tested needs to be added; the operation is simple, easy to promote and apply, and suitable for batch detection.

This invention discloses a method for preparing a strontium titanate modified layer on the surface of zirconia based on an impregnation-heat treatment method, comprising: (1) mixing titanium sulfate, urea and water to obtain a precursor liquid A, placing zirconia ceramic in the precursor liquid A, heating to boiling and maintaining for a period of time, then removing the zirconia ceramic, and after heat treatment A, preparing a titanium dioxide film on the surface of zirconia; (2) mixing H2O2 aqueous solution, ammonia and deionized water, adding metatitanic acid and stirring to dissolve, obtaining a precursor liquid B, placing the zirconia with the titanium dioxide film in the precursor liquid B, and allowing it to stand and react for a period of time at room temperature, depositing zirconia modified with a titanium dioxide precursor layer; (3) dissolving strontium acetate, or a mixed salt composed of calcium acetate and / or magnesium acetate and strontium acetate in deionized water to obtain an impregnation treatment solution, placing the zirconia modified with the titanium dioxide precursor layer in the impregnation treatment solution, allowing it to stand and react for a period of time, and then removing it, and after heat treatment B, preparing a strontium titanate modified layer on the surface of zirconia. The strontium titanate layer prepared on the surface of zirconia ceramic in this invention is tightly attached to the zirconia substrate and has high hydrophilicity, which is conducive to the adhesion of proteins and cells in the human body. At the same time, it can release active factors such as strontium ions for a long time to promote bone formation and bone regeneration at the implantation site, ultimately enhancing the osseointegration capacity of the zirconia implant.

The present invention relates to a cell lysate wherein the lysis buffer comprises magnesium acetate, the phosphorylation inhibitor K3L, the agonist of dephosphorylation GADD34 and a caspase inhibitor for use in, or as, a cell-free system and a method for preparing a cell-free protein synthesis system. Further provided is a method for expressing a protein in the cell-free protein synthesis system, a method for screening for a candidate compound for an effect on a target molecule and a use of the cell-free protein synthesis system. The present invention also provides a kit for the above-mentioned cell-free systems.

The present application relates to the technical field of aluminum and aluminum alloy anodic oxidation film surface treatment, and discloses an aluminum alloy anodic oxidation film sealing agent with sealing and hydrophobic functions and application thereof, which is composed of the following components: magnesium acetate, ammonia organic acid, ammonia surfactant, corrosion inhibitor, pH buffer and water. The present application uses magnesium acetate as the main sealing material, and ammonia organic acid and ammonia surfactant are used in synergistic action to realize efficient sealing of the anodic oxidation film and simultaneously build a hydrophobic surface, and the obtained film layer has a water drop angle of > 110°. The sealing agent uses water as the solvent, does not contain volatile organic compounds (VOC), heavy metal ions and toxic and harmful substances such as formaldehyde, has long-term hydrophobicity and excellent corrosion resistance, is environmentally friendly and harmless, has low cost, and is simple to operate, and is suitable for protective treatment of aluminum alloy anodic oxidation film.

This invention discloses a trivalent chromium-doped yttrium aluminum garnet powder and its preparation method. The chemical formula of the powder is (Y 1‑ y Ca y )3(Al 1‑x‑z Cr x Mg z )5O 12 Furthermore, 0.001≤x≤0.02, 0.0001≤y≤0.005, and 0.0001≤z≤0.003; This invention uses yttrium nitrate and aluminum nitrate as main materials, and chromium nitrate, magnesium acetate, and calcium acetate as dopants. The precursor is prepared by adding it dropwise to ammonium bicarbonate bottom solution via reverse co-precipitation. The target powder is obtained by drying and calcination. This invention constructs a nitrate-acetate composite system and utilizes the in-situ thermal decomposition gas generation effect of acetate to suppress grain necking, reconstructing hard agglomerates into soft agglomerates. At the same time, it achieves atomic-level in-situ doping of Mg and Ca in the YAG lattice. The resulting powder has both high dispersibility and high sintering activity, and is suitable for preparing Cr:YAG transparent ceramics with high linear transmittance.

This application provides an environmentally friendly, low-chlorine, low-sodium de-icing agent, its preparation method, and its application, belonging to the field of de-icing material technology. The environmentally friendly, low-chlorine, low-sodium de-icing agent comprises the following components by weight: a rapid de-icing component: 35-45 parts, composed of calcium formate and magnesium acetate; an ice-inhibiting and corrosion-inhibiting component: 38-55 parts, composed of polyepoxysuccinic acid, zinc lactate, and sorbitol; and a long-lasting performance component: 10-15 parts, composed of nano-scale hydrophobically modified zeolite and carboxymethyl chitosan. The environmentally friendly, low-chlorine, low-sodium de-icing agent of this invention has significant advantages in ice suppression rate, duration of action, corrosion inhibition, and anti-caking properties, and can better meet the actual needs of snow and ice removal on roads, bridges, airport runways, or critical facilities, while reducing damage to the environment and infrastructure.

The present invention belongs to the technical field of organic synthesis. Disclosed is a preparation method for bisphenol A bis(2-hydroxyethyl) ether. The specific steps of the preparation method are as follows: adding bisphenol A, a mixed acetate catalyst and a solvent into a reactor; starting stirring and performing replacement by nitrogen, raising the temperature to a reaction temperature, and then starting to feed ethylene oxide; after the addition of ethylene oxide is completed, maintaining the temperature and continuing the reaction until the pressure no longer decreases; cooling same to a desolventization temperature, performing desolventization until no more solvent comes out, then cooling same and degassing same, and discharging same to obtain the bisphenol A bis(2-hydroxyethyl) ether. The mixed acetate catalyst consists of calcium acetate, magnesium acetate and barium acetate; and the solvent is methyl cyclohexane. The preparation method of the present invention uses specific mixed acetates as a catalyst and methyl cyclohexane as a solvent, so that an excellent catalytic effect is achieved and the prepared bisphenol A bis(2-hydroxyethyl) ether is endowed with high purity, a low hydroxyl value and light color, and the solvent has low toxicity and is easy to recycle.