50 results about "Spontaneous reaction" patented technology

A polysaccharide coated carrier having a coating of at least two successive layers of polysaccharide. The first polysaccharide layer spontaneously associates with a second polysaccharide layer and, optionally, the carrier. Each successive layer of polysaccharide spontaneously associates with a preceding layer. Spontaneous association occurs due to the presence of oppositely charged functional groups on each layer of polysaccharide or due to a spontaneous reaction between the functional groups the layers. The carrier may be any surface such as a tube, microtitration plate, bead, particle or the like and is suitable for use in diagnostic or therapeutic methods.

According to the invention, there is provided null-LOX-1 barley and plant products produced thereof, such as malt manufactured by using barley kernels defective in synthesis of the fatty acid-converting enzyme lipoxygenase-1. Said enzyme accounts for the principal activity related to conversion of linoleic acid into 9-hydroperoxy octadecadienoic acid, a lipoxygenase pathway metabolite, which—through further enzymatic or spontaneous reactions—may lead to the appearance of trans-2-nonenal. The invention enables brewers to produce a beer devoid of detectable trans-2-nonenal-specific off-flavors, even after prolonged storage of the beverage.

A method and apparatus for selective etching a substrate using a focused beam. For example, multiple gases may be used that are involved in competing beam-induced and spontaneous reactions, with the result depending on the materials on the substrate. The gases may include, for example, an etchant gas and an auxiliary gas that inhibits etching.

The invention belongs to the technical field of electrode materials and relates to sodium vanadium fluorophosphate as well as a low-temperature environment-friendly preparation method and use thereof. The preparation method comprises the steps of preparing a mixed water solution of a sodium source, a vanadium source, a phosphorus source and a fluorine source, reacting by virtue of the mixed water solution at 20-180 DEG C to obtain sodium vanadium fluorophosphate, wherein the vanadium source is a trivalent vanadium source and/or a tetravalent vanadium source; the chemical constitution of sodium vanadium fluorophosphate is Na3(VOxPO4)2F3-2x, and x is more than or equal to 0 and less than or equal to 1. According to the low-temperature environment-friendly preparation method, the mixed water solution of the sodium source, thephosphorus source, the fluorine source and the trivalent vanadium source and/or a tetravalent vanadium source can generate spontaneous reaction at 20-35 DEG C, the reaction can be accelerated at a temperature high than 35 DEG C and lower than 180 DEG C, and well-crystallized sodium vanadium fluorophosphate can be obtained. Sodium vanadium fluorophosphate can be used as an anode to be assembled into a battery, the specific discharge capacity is not lower than 100mAh/g, and the cycling stability is good.

The invention provides a release-controlled medicine fertilizer composition and a preparation method thereof. The medicine fertilizer composition is prepared from the following raw materials in percentage: 5 to 30 percent of weeding agents, 5 to 40 percent of fertilizers, 10 to 30 percent of surfactants, 0.5 to 3 percent of photoinitiators, 5 to 20 percent of prepolymers and the balance of solvents. The medicine fertilizer composition has the advantages that the medicine does not need to be prepared into a microcapsule preparation; and through the addition of the specific photoinitiator to bemixed with the prepolymers, medicine fertilizer can perform spontaneous reaction under the illumination condition after spraying use so as to form the medicine fertilizer composition with a slow-release effect. The medicine fertilizer active ingredient stability and effect-lasting period are improved.

Material is deposited in a desired pattern by spontaneous deposition of precursor gas at regions of a surface that are prepared using a beam to provide conditions to support the initiation of the spontaneous reaction. One the reaction is initiated, it continues in the absence of the beam at the regions of the surface at which the reaction was initiated.

The invention relates to a coating method for preventing birds from building nests, in particular to a method which is capable of effectively preventing birds from building nests on power transmissionand transformation circuits and equipment. The coating method for preventing birds from building nests adopts coating of any two or three of a red colour system, a yellow colour system and a blue colour system to carry out interval coating. The invention applies the characteristics of biological spontaneous reaction and utilizes the sensitivity of the birds to colors to prevent the birds from building the nests and prevent bird damage. Meanwhile, the coating method has no environmental pollution or chemical pollution, and simple and convenient construction.

The present invention relates to a method for manufacturing a composite membrane using a selective layer prepared through the interfacial polymerization (support-free interfacial polymerization) on a free interface without a support and, more specifically, to a method for manufacturing a composite membrane comprising a reverse osmotic membrane, which is obtained by preparing a selective layer through a spontaneous reaction of two organic monomers on an interface between two immiscible solutions and allowing the selective layer to adhere to a support. By employing the method for manufacturing a composite membrane having a selective layer prepared through the support-free interfacial polymerization according to the present invention, a high-functional reverse osmotic membrane can be prepared using various supports other than a conventional polysulfone support, thereby extending the application range of the reverse osmotic membrane, which has been restricted due to low chemical resistance of polysulfone. In addition, the preparation method for the selective layer can be controlled more precisely than a conventional method, and the analysis of components (selective layer, support, and interface) of the composite membrane is easy.

The method of preparing hydrogen with methanol is to react with methanol solution of 50-75 % concentration in ultrasonic device of 28 kHz or 40 kHz and 100-1000 W power. The present invention is water vapor reforming reaction of methanol and ultrasonic wave is used to produce vibrating and cavitation effect on the methanol solution. The reaction has highest macro temperature lower than critical temperature for spontaneous reaction, and hydrogen may be produced at normal temperature or even lower temperature. The present invention has improved methanol reacting hydrogen preparing condition, lowered reaction temperature and relaxed requirement on catalyst.

The invention belongs to the field of welding, and relates to a process for welding between same metal plates or dissimilar metal plates, in particular to a method for welding between the metal plates. The method for welding between the metal plates comprises the following steps that, after the first metal plate and the second metal plate are in overlapped lap joint or butt joint, a proper amountof metastable self-propagating reaction metal mixed powder is placed at the lap joint or but joint position, welding is carried out, the self-propagating reaction of the metal mixed powder is triggered, and the first metal plate and the second metal plate are welded together with the aid of heat released by the self-propagating reaction. According to the method for welding between the metal plates, a large amount of heat generated during welding is utilized to trigger the metastable self-propagating reaction metal mixed powder for spontaneous reaction, and the first metal plate and the secondmetal plate are bonded together under the action of instantaneous heat released by the self-reaction. The method for welding between the metal plates is especially suitable for welding between the high-melting-point metal plates, and can overcome welding defects such as insufficient heat input of a high-melting-point alloy.

The invention relates to a method for synthesizing aminoacetonitrile and N,N-dimethylcyanamide by using methane and ammonia gas as raw materials, which is characterized by comprising the following steps: performing non-equilibrium plasma activation on methane and ammonia gas to generate carbon-containing and nitrogen-containing free radical active species, and performing one-step spontaneous reaction on the species to generate the target products. The method belongs to a one-step direct synthesis process, has the advantages of simplicity and cheap raw materials, does not use solvent and causes no pollution. Besides, the method is also applicable to synthesis of organic compounds from various C1-5 alkane, olefin and alkyne and ammonia gas. Moreover, in addition to the aminoacetonitrile and N,N-dimethylcyanamide, acetonitrile, ethylenediamine, 4,5-dihydro-5-methylpyrazole, aminopyrazole and other products can be also obtained through the plasma synthesis method.

The invention relates to preparation of novel fluorescent carbon nanoparticles and an application in biological samples and belongs to the technical field of pharmaceutical analysis. By a phosphorus pentoxide dehydration method, a carbohydrate compound is used as a carbon source and reactants are simply mixed to prepare carbon nanoparticles with fluorescent property by a one-step method. The preparation process is a process of a spontaneous reaction. Without external heating or complex operations, a lot of carbon nanoparticles can be rapidly produced. The prepared carbon nanoparticles are characterized in that emission wavelength is fixed and will not change with excitation wavelength. In a phosphate buffered solution, fluorescence intensity of the carbon nanoparticles is obviously reduced with increasing of concentration of quercetin, and influence of other coexisting substances on fluorescence intensity of the carbon nanoparticles is little. Under optimized conditions, a good linear relationship between fluorescence intensity of the carbon nanoparticles and the concentration of quercetin is shown. The preparation method is pollution-free, simple, reliable and low-cost, and the prepared fluorescent carbon nanoparticles have a wide application prospect in aspects of detection of traces of pharmaceuticals in complex biological samples and detection and control of heavy metal in the environment.

The invention discloses a method for producing organic fertilizer by using livestock manure. The method comprises the following steps: S1, mixing livestock manure and crop straws according to a givenweight ratio; S2, before a compost mixture is placed into a reaction tank, adding a given amount of water into the compost mixture; and S3, placing the compost mixture into the reaction tank, performing the spontaneous reaction of the compost mixture for one week in a closed state of the reaction tank; placing a given amount of oxygenation agent on the bottom of the compost mixture in the reactiontank about every two weeks, and enabling the compost mixture to continuously perform the aerobic reaction; after the temperature in the reaction kettle is stable, stopping placing the oxygenation agent into the reaction tank; and after the feeding of the oxygenation agent is stopped, keeping the closed state of the reaction tank for one week. According to the method of the invention, not only canthe anaerobic decomposition and degradation reaction be performed for the compost mixture, but also the oxygenation agent is placed into the reaction tank to perform the aerobic decomposition and degradation reaction, the decomposition speed for converting the organic matters into organic fertilizer can be increased, and the fertilizer effect conversion rate can be increased.

The invention belongs to the technical field of lithium metal electrode oxidation protection and discloses a lithium metal electrode surface oxidized composite protective layer structure and a preparation method thereof. The lithium metal electrode surface oxidized composite protective layer structure comprises a plurality of electronic insulated two-dimensional lamellar structural layers; a phenyl sulfide conducting layer is arranged between every two adjacent two-dimensional lamellar structural layers; the preparation method comprises the steps of A, dispersing graphene oxide powder fully inan organic solvent to obtain a dispersion; B, adding thioether with benzene functional groups into the dispersion, mixing well for dissolving to obtain a coating solution; C, spraying the coating solution to a battery diaphragm substrate, evaporatively drying the solvent to obtain a diaphragm with an even coating. Organic phenyl sulfide small molecules are introduced among the multiple two-dimensional lamellar structural layers; lithium ion transfer passages formed by S-S crosslinked structure that the resultant forms through spontaneous reaction; electrolyte and lithium metal can be isolatedfrom direct contact; cycle stability of lithium metal is improved.

The invention relates to a method for preparing bone-like apatite controlled by thermodynamics. Water micro-soluble calcium salts with a Ksp value larger than that of bone-like apatite, such as calcium sulphate or hydrate thereof and the like, are taken as raw materials and react in a water solution of a water-soluble phosphate, thus obtaining the bone-like apatite; the yield of the product is above 95 percent, and the molar ratio of Ca/P is consistent with the theoretical computation of the raw materials. The method is characterized in that the reaction process is thermodynamic spontaneous reaction controlled by thermodynamics instead of dynamics; therefore, reaction condition does not affect the final composition and property of the product, and the product is stable and has less impurities; the prepared nano bone-like apatite sizing material can be directly applied to preparing corresponding nano biomimetic composite bone repairing and substituting materials and the like or used for obtaining corresponding bone-like apatite powder after being dried.

The invention discloses a method for producing a fire-resistant insulated castable by self-foaming thermal reaction hardened forming, which is characterized by comprising the following steps of: pre-mixing and stirring 60 to 70 percent of refractory aggregate with the granularity between 0.5 and 5mm, 20 to 30 percent of refractory powder with the granularity between 0 and 0.5mm and 3 to 10 percent of aluminum powder with granularity between 0 and 0.1mm, and adding 50 percent phosphoric acid solution in a certain proportion; fully stirring, injecting the castable into a specified mold so as to perform spontaneous reaction foaming forming; and after fully reacting and continuously raising the temperature to the constant temperature of over 60 DEG C for about 1 hour, and curing and hardening into a molded fire-resistant insulated material with certain intensity. The prepared fire-resistant insulated material has hardness and intensity indexes equivalent to those of the light-weight refractory brick, simple production technology, energy-saving and environment-friendly production process, and significance for industrial application.

The invention discloses a preparation method of an inorganically filled lithium ion battery diaphragm. The preparation method comprises the following steps of adding tetrabutyl titanate into suspension liquid prepared from ultrahigh molecular weight polyethylene and a diluent, extruding the mixture to form a diaphragm, stretching the diaphragm, and extracting the diluent; and then carrying out spontaneous reaction on the tetrabutyl titanate in the diaphragm and water in a circulating water tank to generate titanium dioxide, enabling the titanium dioxide to enter a heat treatment device to be shaped, and finally enabling the thickness of the diaphragm to be uniform through thermal rolling. The preparation method can introduce titanium dioxide particles into the diaphragm by utilizing the reaction of the tetrabutyl titanate and the water, and is favorable for enhancing multiple mechanical properties and heat resistance performance of the diaphragm. The preparation method has the advantages of simplicity in operation, energy conservation, environmental protection, high safety and high production efficiency. The porosity of the diaphragm prepared by the preparation method is high, and the intensity of the diaphragm is qualified, and the shrinkage ratio of the diaphragm is smaller than 8% after the diaphragm shrinks at 150 DEG C for one hour. The lithium ion battery diaphragm obtained by the preparation method is good in the heat resistance performance and standard in mechanical properties, and can be used as a large-power lithium-ion battery diaphragm.