485results about How to "Slow reaction rate" patented technology

This invention provides methods and systems for measuring the binding of analytes in solution to probes bound to surfaces in real-time.

The invention relates to an acid fracturing method of a temperature-control and variable-viscosity acid in the exploitation of an oil-gas well, which comprises the steps that: a common chlorohydric acid pickling process is firstly used for removing the pollution of an embrasure; then, the temperature-control and variable-viscosity acid fracturing process, or an ahead-fluid temperature-control and variable-viscosity acid fracturing process, or a temperature-control and variable-viscosity acid fracturing enclosed acidizing process, or an ahead-fluid temperature-control and variable-viscosity acid fracturing enclosed acidizing process is adopted; the weight ratio of the components of the temperature-control and variable-viscosity acid are as follows: 100 portions of basic acid solution, 0.5 portion to 1.5 portions of the main agent of the temperature-control and variable-viscosity acid, 1 portion to 3 portions of a corrosion inhibitor of the temperature-control and variable-viscosity acid, 0.5 portion to 1 portion of an emulsion breaker, 0.5 portion to 1 portion of a ferric ion stabilizer and 0.5 portion to 1 portion of a high efficient discharge aiding agent; 2-percent KCL clear water is used for displacing the temperature-control and variable-viscosity acid into the stratum. The temperature-control and variable-viscosity acid is easily prepared on site, with low friction drag and strong pumpability, thereby being capable of being applied to high-discharge construction; under the high temperature condition of a storing layer, both the fresh acid and the residue acid have high viscosity, thus increasing the length of acid-etching cracks. After the construction is finished, the viscosity of the residue acid is reduced, which is beneficial to the back discharge of the residue acid.

A biosensor array, system and method for affinity based assays that are able to simultaneously obtain high quality measurements of the binding characteristics of multiple analytes, and that are able to determine the amounts of those analytes in solution. The invention also provides a fully integrated bioarray for detecting real-time characteristics of affinity based assays.

The invention discloses a method for synthesizing a cobalt oxide / graphene composite wave-absorbing material and relates to nanometer wave-absorbing materials. The method comprises the following steps: (1) dissolving a metal cobalt salt, ammonium fluoride and urea in water, thereby obtaining a metal saline solution; (2) adding the metal saline solution prepared in the step (1) into a hydrothermal kettle, and magnetically stirring to be uniform; (3) dispersing graphene solid powder into an absolute ethyl alcohol solution, thereby obtaining a graphene alcohol solution; (4) adding the graphene alcohol solution prepared by the step (3) into the metal saline solution prepared in the step (2), mixing, stirring, putting the hydrothermal kettle into a drying oven for reacting, thereby obtaining purple turbid liquid; and centrifuging, washing the obtained precipitate by using the ethanol solution, thereby obtaining a subcarbonate / graphene material; and (5) heating and drying the subcarbonate / graphene material obtained in the step (4), calcining, thereby obtaining the product cobalt oxide / graphene composite wave-absorbing material. The method is simple, high in operability, mild in preparation conditions, clean and pollution-free in reaction process, high in reaction efficiency and high in reproducibility.

The invention discloses a terrace coating and a preparation method thereof. The terrace coating consists of a first component and a second component, wherein the first component comprises the following ingredients in percentage by weight: 25 to 40 percent of polyaspartic acid ester resin, 5 to 10 percent of hydroxy acrylic resin, 0.2 to 0.5 percent of dispersing agent, 3 to 10 percent of anti-wear additive, 10 to 15 percent of rustproofing pigment, 20 to 40 percent of pigment and filler, 0.2 to 0.5 percent of antifoaming agent, 0.2 to 0.5 percent of leveling agent and 5 to 10 percent of solvent. The preparation method comprises the steps of weighing the components according to a formula, preparing the first component and packaging. According to the terrace coating disclosed by the invention, slurry has long gelation time; a film layer has a good mechanical performance; and the terrace coating is wear-resistant, weather-resistant, anti-corrosive and waterproof.

This invention provides methods and systems for measuring the concentration of multiple nucleic acid sequences in a sample. The nucleic acid sequences in the sample are simultaneously amplified, for example, using polymerase chain reaction (PCR) in the presence of an array of nucleic acid probes. The amount of amplicon corresponding to the multiple nucleic acid sequences can be measured in real-time during or after each cycle using a real-time microarray. The measured amount of amplicon produced can be used to determine the original amount of the nucleic acid sequences in the sample.

The invention discloses an inorganic salt type inhibitor for preventing and controlling spontaneous combustion of residual coal in a goaf of a coal mine, which belongs to the field of fire prevention and extinguishment in the goaf of the coal mine. The inorganic salt type inhibitor consists of sodium bicarbonate, calcium bicarbonate, calcium chloride, magnesium chloride, sodium chloride and zinc chloride according to a certain proportion by weight. The average inhibiting rate of the inorganic salt type inhibitor can achieve 85%, and the inhibiting effect is ideal. When in use, the inhibitor is covered on the surface of the residual coal in the goaf, thereby achieving the effects of preventing and controlling the spontaneous combustion of a coal layer in the region for a long time. The dusting method of the inorganic salt type inhibitor for fire prevention and extinguishment is safe and stable, the process flow is simple, the operation is convenient, the initial investment is low, and the using cost is relatively low. The fire prevention and extinguishment technology of the inorganic salt type inhibitor which has thermal instability and can release inert gas carbon dioxide has broad application prospects in the work of preventing and controlling the spontaneous combustion fire disasters of the coal layers. The inorganic salt type inhibitor is applicable to the fire prevention and extinguishment in the goaf of the coal mine.

The invention relates to a liquid crystal panel copper-molybdenum membrane etching liquid. According to the total weight, the copper-molybdenum membrane etching liquid comprises the following components in percentage by weight: 1-20 percent of hydrogen peroxide, 0.01-8 percent of a hydrogen peroxide stabilizer, a pH regulator prepared by mixing 1-8 percent of ammonia water and 1-7 percent of organic phosphinate, 0.1-12 percent of a chelating agent, 0.1-5 percent of a metal corrosion inhibitor and the balance of water. According to the copper-molybdenum membrane etching liquid, the problem of stability decomposition of hydrogen peroxide caused by factors such as PH value, heat and metal ions in the working process of the etching liquid is solved, and the hydrogen peroxide can have favorable stability under the conditions of temperature increase, metal ion content increase and the like, so that the realization of uniform etching is facilitated; during etching, the reaction rate of molybdenum metal is reduced, molybdenum and copper are etched at the same rate, and finally CD LOSS and a slope angle, which meet the process requirements of a customer, can be presented; and the copper-molybdenum membrane etching liquid contains no fluoride ions and is environment-friendly.

A knee pad assembly for relieving the symptoms of patellar tendinitis, including a pad adapted for being positioned against and molded onto a lower leg in the region of the knee for lying in closely-conforming relation against and applying radially-directed pressure to the attachment site of the patellar tendon to the patella, to the knee joint, and to at least one epicondyle of the tibia. The pad is hardened into a rigid structure for therapeutic use and includes an initially flexible inner substrate impregnated or coated with a reactive system. The system remains stable when maintained in substantially moisture-free conditions and hardens upon exposure to moisture to form a rigid, self-supporting structure having a shape conforming to the lower leg to which the pad is molded during curing. A flexible cover encloses the substrate, and cooperates with the pad for maintaining the pad in its closely-conforming position against the lower leg.

The invention relates to monocrystalline single crystals of metal-organic framework materials comprising at least one aluminum metal ion, processes for preparing the same, methods for employing the same, and the use thereof. The invention also relates to monocrystalline aluminum metal-organic frameworks.

An improved acidization method is provided in which an aqueous solution comprising one or more esters or polyesters of lactic acid or of glycerol is placed in a well where the esters or polyesters undergo hydrolysis. The hydrolysis of the esters or polyesters occurs at a slower reaction rate than that of several other known acidization esters, such as diethyleneglycol diformate, at temperatures higher than 60° C. or even higher than 100° C. Thus, the solution may be distributed substantially throughout a region in the well where acidization is required before hydrolysis is completed, despite being exposed to relatively high temperatures.

This invention provides methods and systems for measuring the binding of analytes in solution to probes bound to surfaces in real-time. The method involves contacting a fluid volume having a plurality of different analytes with a solid substrate having a plurality of different probes. The probes are capable of specifically binding to the analytes. The method also involves measuring signals at multiple time points while the fluid volume is in contact with the substrate. The signals measured at multiple time points can be correlated with the amount of binding of the analytes with the probes. The method eliminates the need to wash the probes before measuring the binding characteristics.

Dissolution, partial dissolution or softening of cellulose in an ionic liquid (IL) and its subsequent contact with anti-solvent produces regenerated cellulose more amorphous in structure than native cellulose, which can be separated from the IL / anti-solvent mixture by mechanical means such as simple filtration or centrifugation. This altered morphology of IL-treated cellulose allows a greater number of sites for enzyme adsorption with a subsequent enhancement of its saccharification. The IL-treated cellulose exhibits significantly improved hydrolysis kinetics with optically transparent solutions formed after about two hours of reaction. This provides an opportunity for separation of products from the catalyst (enzyme) easing enzyme recovery. With an appropriate selection of enzymes, initial hydrolysis rates for IL-treated cellulose were up to two orders of magnitude greater than those of untreated cellulose. Due to the non-volatility of the IL, anti-solvent can be easily stripped from the IL / anti-solvent mixture for recovery and recycle of both the ionic liquid and anti-solvent.

The invention relates to a preparation method for organosilicone positive ion waterborne polyurethane. The preparation method comprises the following steps: (1) reacting diethylamine with allyl chloride in the presence of an alkaline to generate diethyl allylamine; (2) carrying ring opening on D4 under the effect of a catalyst and blocking by using HMM (hexamethylmelamine) to generate dihydro-blocked polysiloxane; (3) carrying out hydrosilylation reaction on dihydro-blocked polysiloxane and diethyl allylamine; (4) carrying out quaternization reaction on the production of the addition reaction and chloropropanol; and (5) generating a prepolymer through reaction between HMDI and PTMEG1000 and extending chains in water by using the quaternization product to generate the organosilicone positive ion waterborne polyurethane. The preparation method provided by the invention is simple and convenient to operate, mild in reaction condition, free of carbonization and products are easily separated and recycled. Firstly, polysiloxane with amido at two terminals is salified and then chains are extended, and the conventional step of salifying positive ions with an acid and then neutralizing is cancelled, so that use of a nitrogen-containing chain extender is reduced, the cost is saved and the problem that positive ion polyurethane gets yellow is prevented.

The invention relates to the technical field of polluted groundwater bioremediation, in particular to a metal peroxide base oxygen slow-release composite material and a preparation method thereof. 40 percent to 60 percent of the metal peroxide, 20 percent to 50 percent of calcium phosphate cement, 1 percent to 3 percent of anhydrous calcium sulfate and 5 percent to 10 percent of clay are mixed evenly and added with water, then sent to a granulator for granulation; the obtained solid particles are soaked into the acrylic-itaconic acid copolymer liquid for 1 to 3 minutes and taken out, wherein,the mass ratio of the solid particles and the acrylic-itaconic acid copolymer liquid is 1:3-1:10, then drying and solidification are carried out at 18 to 25 DEG C, and then the metal peroxide base oxygen slow-release composite material is obtained. When in the polluted groundwater rehabilitation, the composite material can greatly slow the reaction rate of the metal peroxide and water, reduce unnecessary loss of the metal peroxide, and improve the service efficiency and period of the metal peroxide.

This invention relates to a method and a device for ozone production, in particular to produce ozone by synergism of discharge and catalyst. The method includes introducing air or oxygen into the discharge space between high voltage electrode and grounding electrode, and discharging, wherein catalysts with high surface area and dielectric property filled in the space has catalytic effect on ozone production. The device comprises a discharge electrode consisting of high voltage power and high voltage electrode and grounding electrode, a cavity and an outlet and an inlet thereon, catalysts (2) with high surface area and dielectric property composited between the high voltage electrode (3) and the grounding electrode (4), spaces between discharge electrode and catalysts (2) and spaces formed by catalysts (2) as flow channel for discharge gas.

The invention relates to a preparation method of nonanal and methyl formylcaprylate. The method comprises the following steps: epoxidized methyl oleate is used as a raw material to react under the action of catalyst and generate nonanal and methyl formylcaprylate, wherein the reaction temperature is 40-100 DEG C, the pressure is atmospheric pressure; the mesoporous molecular sieve which is treated with 10-35% hydrogen peroxide is taken as a carrier for the catalyst, the weight ratio of tungsten used as main catalyst to the weight of the carrier is 0.005-0.1, and the weight ratio of one of titanium and molybdenum, used as cocatalyst to the weight of the carrier is 0-0.1. The invention has the following beneficial effects: by adopting the technical scheme that the reaction temperature is 40-100 DEG C, the pressure is atmospheric pressure; the mesoporous molecular sieve is taken as a carrier for the catalyst, tungsten is used as a main catalyst and titanium or molybdenum used as cocatalyst is added or not, the problem can be solved well. The preparation method provided by the invention has mild reaction conditions, low cost and higher product yield and is suitable for industrial production.