16 results about "Acid release" patented technology

The present application relates to a novel long-acting solid coated slow-release acid and a preparation method. The solid coated slow-release acid has a core-shell structure, the shell layer comprises a polymer, and the core comprises an acid former; the acid former is at least one selected from chlorinated aromatic hydrocarbons, chlorinated acid esters and acid chlorides, and the polymer is at least one selected from polyesters, poly(meth)acrylates, epoxy resins, polyolefins, polyacrylonitriles, polyimides, polyvinyl alcohols. The solid coated slow-release acid has the advantages of small environmental pollution, long acid release time, excellent deep penetration performance, high acid generating efficiency, easy storage and transportation, good slow-release performance and simple preparation.

The invention discloses a universal sample type nucleic acid releasing agent and application thereof. The nucleic acid releasing agent is prepared from the following components in molar concentration: 20 to 100 mM of Tris-HCl, 30 to 500 mM of sodium chloride, 30 to 200 mM of ammonium sulfate, 1 to 6 mM of EDTA (Ethylene Diamine Tetraacetic Acid), 1 to 8 mM of a reducing agent, 0.1 to 0.2 percent of sodium dodecyl sarcosinate, 0.1 to 3 mM of Surfactin, 5 to 30 percent of Chelex-100 and 5 to 15 percent of trehalose. According to the method, various samples can be mildly split, impurities such as impure proteins and lipids can be effectively removed, the complexity of nucleic acid samples is reduced, and the method is seamlessly jointed with subsequent PCR (Polymerase Chain Reaction); the kit has double effects of sample preservation and splitting decomposition, can strongly inhibit various nuclease, and can ensure the long-term storage stability of samples.

The utility model discloses an acid amount control device for adding acid into a lead-acid battery, which comprises a rack, and the rack is provided with an acid feeding box, an acid feeding pump, an acid storage tank, an acid storage tank and an acid storage tank, and is characterized in that the acid feeding box is externally connected with the acid feeding pump; the acid adding quantitative cup is installed at the bottom of the acid feeding box, the bottom of the acid adding quantitative cup is connected with a communication hose, and the communication hose is communicated with an acid adding assembly used for adding acid to the battery; the acid amount control rod is inserted into the acid adding quantitative cup and can move in the vertical direction; the communicating hose penetrates through the acid discharging opening and closing assembly, and the acid discharging opening and closing assembly can control opening and closing of the communicating hose. The acid adding device has the beneficial effects that the acid adding amount is controlled by adjusting the length of the acid amount control rod extending into the acid feeding box, the control effect of the acid adding amount is good, and quantitative acid adding is ensured.

The present disclosure relates in some aspects to methods, systems, and kits for using diphosphonic acid to promote N—O bond cleavage in a 3′ O—NH2 nucleotide in a cell or tissue sample. In some aspects, diphosphonic acid is used to promote N—O bond cleavage in a 3′ O—NH2 blocked reversible terminator during multiple cycles of a nucleic acid sequencing reaction in a cell or tissue sample. In some embodiments, the chemical reaction of the 3′ O—NH2 blocked reversible terminator with diphosphonic acid releases free alcohols and phosphoric acid derivatives, which are not damaging to the cell or tissue sample.

The invention relates to the field of biological detection, in particular to a nucleic acid releasing agent and a preparation method and application thereof. The invention provides a nucleic acid releasing agent. The nucleic acid releasing agent comprises chaotropic salt, polyethylene glycol, a surfactant, an antifreeze agent, a penetrant, a metal chelating agent, an antioxidant and a buffer solution. According to the invention, the extraction-free rapid nucleic acid releasing agent is researched and developed, and an ultrasonic treatment scheme is introduced to carry out rapid pretreatment on the sample, so that the problems of tedious nucleic acid extraction process, long time consumption and low efficiency in the prior art are successfully solved, and an efficient, convenient and low-cost nucleic acid releasing and detecting scheme is provided for clinical detection and scientific research.

This invention discloses a high-temperature acid-responsive degradable microencapsulated acid for acid fracturing and its preparation method, belonging to the technical field of chemical materials for acid fracturing in oil and gas fields. The high-temperature acid-responsive degradable microencapsulated acid for acid fracturing includes an acid core and a microcapsule shell encapsulating the acid core. The microcapsule shell is made of a high-temperature acid-responsive degradable polymer material, which is polymerized from five monomers: acrylamide, tert-butyl methacrylate, 2-acrylamide-2-methylpropanesulfonic acid, diallylamine, and allyl polyoxyethylene ether. The microencapsulated acid of this invention can achieve delayed acid release and shell degradation in high-temperature acid solutions, effectively reducing reservoir damage caused by shell residue while ensuring etching capability. It also exhibits strong temperature and shear resistance, making it suitable for acid fracturing operations in high-temperature / ultra-high-temperature carbonate reservoirs.

In various embodiments novel biodegradable acid-activated acid releasing nanoparticles (acNPs) are provided that are used as a targeted strategy to manipulate lysosomal acidity and autophagy. These acNPs based, in certain embodiments, on fluorinated polyesters are degraded at pH 6.0 (pH reported in dysfunctional lysosomes), and release component acids that further lower the lysosomal pH, and thereby increasing autophagic flux and cellular function of hepatocytes under LT. The acNPs can serve as a therapeutic in restoring liv- er-diseases.

The utility model discloses a vacuumizing assembly for acid adding of a lead-acid battery, which comprises a rack, the rack is provided with an acid adding assembly, the acid adding assembly is provided with a plurality of acid adding cups, the upper ends of the acid adding cups are communicated with an acid amount control assembly, the lower ends of the acid adding cups are connected with acid adding hoses, and the lower end of the acid adding assembly is provided with an acid adding nozzle assembly capable of longitudinally moving; the acid adding nozzle assembly is communicated with the acid adding hose, and the acid adding assembly is provided with an acid discharging opening and closing mechanism capable of opening and closing the acid adding hose; the vacuum pipeline is externally connected with a vacuum pump, the vacuum pipeline is connected with a vacuum hose, the vacuum hose is communicated with the upper end of the acid adding cup, and the vacuumizing assembly is provided with a vacuum opening and closing mechanism capable of opening and closing the vacuum hose. The vacuum-pumping assembly has the beneficial effects that the acid adding assembly is integrated in the vacuum-pumping assembly, so that the vacuum-pumping operation is carried out before acid adding, the vacuum-pumping and the acid adding share the same pipeline, the pipeline arrangement is convenient, meanwhile, the vacuum-pumping and acid adding effects can be ensured, and the production and processing efficiency and effect are improved.

The invention discloses a water-absorbing non-woven fabric and a manufacturing process thereof, and belongs to the technical field of non-woven fabrics, the water-absorbing non-woven fabric is formed by compounding a fiber base material and a functional water-absorbing filler, and the water-absorbing filler mainly comprises alginate, an acid releasing agent and modified zinc oxide with a core-shell structure; wherein the modified zinc oxide is of a microcapsule structure taking nano zinc oxide as a core and a tannic acid-metal coordination compound as a shell; through a core-shell shielding technology, premature reaction among the components is blocked in the storage period, and the storage stability of the material is remarkably improved; when liquid absorption is used, the shell layer disintegrates to release zinc ions and tannic acid, alginate is induced to be subjected to in-situ crosslinking, and a flexible toughening network is constructed. The obtained non-woven fabric not only has high liquid absorption rate and excellent wet strength, can effectively prevent liquid reverse osmosis, but also has remarkable synergistic antibacterial and antioxidant functions, and can greatly prolong the refreshing time of fresh food.

The application belongs to the technical field of DNA extraction, and particularly relates to a field rapid extraction method of DNA in plant bacterial disease lesion, which comprises the following steps: mixing plant disease leaf lesion tissue and a lysis solution, and heating in a water bath in a thermos cup to complete nucleic acid release; the lysis solution comprises 0.05-0.2 mol / L NaOH; preferably, the lysis solution comprises 0.05-0.2 mol / L NaOH, 0.01% SDS and 0.1 mmol / L EDTA. The DNA extraction method established by the application does not need precise instruments and toxic reagents, is simple to operate, short in time consumption, and can realize field rapid extraction of plant lesion bacterial DNA, thereby providing technical support for early diagnosis and accurate prevention and control of plant bacterial diseases in the field.

The invention discloses a pH response type multifunctional slow-release soil conditioner based on raffinate acid and phosphate tailings as well as a preparation method and application of the pH response type multifunctional slow-release soil conditioner, and belongs to the technical field of soil remediation. The method comprises the following steps: carrying out gradient leaching on phosphate tailings by utilizing raffinate acid, and adding a heavy metal curing agent to synchronously realize extraction of effective phosphorus, calcium and magnesium and in-situ curing of heavy metals, so as to obtain eutrophic leachate and detoxified tailing slag; the detoxified tailings are subjected to nanocrystallization and mixed with the leachate, sodium alginate, polyglutamic acid and optional functional additives, granulation and drying are performed through an ionic cross-linking reaction, and the conditioner is prepared. The synergistic high-value utilization of the raffinate acid and the phosphate tailings is realized, and the prepared conditioner has the pH intelligent response slow-release characteristic, can act on the acid soil in a targeting manner, regulates the acid for a long time and releases nutrients. The product has multiple functions of improving the soil structure, supplementing nutrients, passivating heavy metals and the like, realizes treatment of wastes with wastes and change of wastes into valuables, and has a wide application prospect in the fields of environmental protection and agriculture.

This invention relates to the fields of inorganic chemical engineering and textile auxiliaries, and discloses a surface modification process for textile-grade sodium metaantimonate to improve dispersibility. The process includes: adding sodium aluminate to a sodium metaantimonate suspension and stirring until dissolved to create an alkaline liquid environment in which tetrahydroxyaluminate ions are stably present; adding an aqueous solution of phenylphosphonic acid dropwise to this alkaline system for acid-base neutralization, controlling the hydrolysis of aluminum species using the acid release rate, and inducing in-situ generated aluminum hydroxyl species to coordinate with phenylphosphonate ions. This invention constructs an antimony-oxygen-aluminum-oxygen-phosphorus chemical hybrid coating layer without a phase interface on the surface of sodium metaantimonate through a specific acid-base coupling synchronous mineralization mechanism. This kinetically blocks the self-condensation aging path of aluminum species, improves the interfacial bonding force and thermal stability of the modified layer under high temperature and high shear conditions, and effectively solves the problems of thermal desorption and secondary agglomeration of sodium metaantimonate during melt spinning.

The utility model provides a microbe nucleic acid detection micro-fluidic chip and an automatic detection box, a first solenoid valve controls the connection and disconnection of an eluent inlet and an eluent outlet, the eluent flows out of the outlet, passes through a sample chamber of a sample introduction module, and enters a degassing flow channel through the sample inlet; the second electromagnetic valve controls connection and disconnection of an outlet of the degassing flow channel and an inlet of the lysis tank, and nucleic acid release of the sample is completed in the lysis tank; the third electromagnetic valve is used for controlling connection and disconnection between an outlet of the cracking tank and an inlet of the reaction detection tank, the reaction detection tank is provided with a plurality of reaction chambers, freeze-dried powder of an LAMP-CRISPR reaction system is preset in the reaction chambers, and nucleic acid isothermal amplification is completed in the reaction chambers. According to the utility model, the chip card box is fully integrated and has low requirements on operators; a swab is adopted for direct sample loading, and a manual extraction process is not needed; and the chip card box is convenient to install and replace due to the plugging design.

The application relates to the field of textiles, and particularly discloses a water-saving dyeing and finishing process for fluorescent red brocade double-faced cloth, which comprises the following steps: S1, oil removal pretreatment: adding the brocade double-faced cloth base cloth into a treatment liquid added with an oil removal agent, heating, keeping warm, cooling, overflowing, draining water, washing the cloth after water feeding, and draining water to obtain the oil removal base cloth; S2, immersing the oil removal base cloth into a dyeing liquid containing fluorescent red dye and a leveling agent, adding an acid releasing agent after operation treatment, heating, keeping warm, cooling, continuously adding the acid releasing agent, then heating, keeping warm, cooling, draining water, then adding glacial acetic acid and warm water to wash the cloth, draining water, washing the cloth, and preparing primary dyed cloth; and S3, treating the primary dyed cloth in a fixing liquid added with a fluorescent fixing agent, heating, keeping warm, then draining water, washing the cloth, feeding water, and taking out the cloth. The application has the characteristics of improving the fixing effect and providing the water-saving dyeing and finishing process for reducing the production cost.

The invention discloses a high-temperature acid response type degradable microcapsule acid for acid fracturing and a preparation method of the high-temperature acid response type degradable microcapsule acid, and belongs to the technical field of chemical materials for acid fracturing of oil and gas fields. The high-temperature acid response type degradable microcapsule acid for acid fracturing comprises an acid core and a microcapsule shell wrapping the acid core, and the microcapsule shell is made of a high-temperature acid response type degradable polymer material. The high-temperature acid response type degradable polymer material is prepared by polymerizing five monomers, namely acrylamide, tert-butyl methacrylate, 2-acrylamide-2-methylpropanesulfonic acid, diallylamine and allyl polyoxyethylene ether. The invention further discloses a preparation method of the high-temperature acid response type degradable polymer material. The microcapsule acid disclosed by the invention can realize delayed acid release and shell degradation in high-temperature acid liquor, effectively reduces reservoir damage caused by shell material residues while ensuring the etching capacity, is high in temperature resistance and shear resistance, and can be suitable for high-temperature / ultrahigh-temperature carbonate reservoir acid fracturing construction.