59 results about "Substance control" patented technology

A system for effective NOx and particulate matter control in a diesel or other lean burn internal combustion engine is presented. The system includes a urea-based SCR catalyst having an oxidation catalyst coupled upstream of it and a particulate filter coupled downstream of the SCR catalyst. This system configuration results in improved NOx conversion due to fast SCR catalyst warm-up and higher operating temperatures. Additionally, placing the particulate filter last in this system configuration reduces tailpipe ammonia emissions as well as prevents any thermal damage to the SCR catalyst due to the particulate filter regeneration.

A composition for controlled delivery of at least one active substance into an aqueous medium by erosion at a preprogrammed rate of at least one surface of the composition, the composition comprising a matrix which is erodible in the aqueous medium in which the composition is to be used and which allows substantially no diffusion of water into the composition beyond any exposed surface layers of the matrix, the matrix comprising at least one substantially water soluble crystalline polymer, e.g. a polyethylene glycol, with at least one water-dispersible or water-soluble surface active agent, e.g. a non-ionic emulsifier, dispersed therein, at least one release modifier, e.g. an enteric coating material, that functions to regulate erosion of the matrix within a pH range of from about 2 to about 7, and at least one active substance. The composition provides controlled, e.g. substantially zero order, release in both the stomach and the intestines despite different conditions of pH, agitation and absorption.

The invention provides fibrous hydrogel and a preparation method thereof and particularly relates to fibrous hydrogel of a fiber architecture, which is prepared by compounding hydrophilic fibers, temperature-sensitive macromolecules, polysaccharides and functional materials through charge gathering or ion exchanging. The fibrous hydrogel has better mechanical properties than those of the general hydrophilic macromolecules, so that the problems that the known hydrogel is relatively weak in strength and can encounter dissolution or decomposition loss can be solved; and the fibrous hydrogel can be applied to the preparation of a fibrous-hydrogel medical appliance, such as a hemostatic material, a wound dressing material, a tissue regeneration guiding substrate, a tissue adhesion preventing substrate, a tissue engineering substrate or an active substance controlled release substrate.

A preparation method of vitamin A and vitamin E nano-sphere / microsphere double-embedding system belongs to the technical field of biological active substance control release microencapsulation. In the present invention, food grade vitamin A is nano-sphere core material and monoglyceride or beeswax is nano-sphere wall material to be made into nano-sphere suspension which is used as microsphere core material together with the vitamin E; ocentyl succinate esterified starch containing tween-80 is used as microsphere wall material; the nano-sphere / microsphere double-embedding system is manufactured by a thermal homogenization-spray drying method. The encapsulation rate towards the vitamin A of vitamin A nano-sphere manufactured by the present invention can reach to 82 percent to 94 percent, and the particle size of the nano-sphere is 200nm to 370nm. The encapsulation rate towards the vitamin A of the double-embedding system is 86 percent to 91 percent and the encapsulation rate towards the vitamin E is 89 percent to 93 percent. The double-embedding system can embed the vitamin A and the vitamin E synchronously and has the effect of releasing step be step, so as to avoid the mutual interference of active components, improve the biological utilization rate and can be added into various foods as vitamin intensifier and extender.

A device for influencing cell-growth mechanisms in vessels, in particular blood vessels, of a human or animal body, wherein to influence the cell growth mechanisms there is provided an excitation device (5; 5″′) which is adapted to produce stimulation currents in a region to be treated of the vessel (3; 3″′), wherein the frequency and / or the modulation frequency of the stimulation currents is in the range of frequencies at which distribution of secondary messenger substances controlling cell growth in the cells of the vessel (3; 3″′) is influenced. Implant for influencing cell-growth mechanisms in such vessels.

The invention concerns a transdermal delivery system for controlled dispensing of an active substance to and through a porous surface. A certain amount of fluid comprising at least one active substance and at least one solvent is dispensed into an administration reservoir. In the administration reservoir the at least one solvent is separated from the administration reservoir by a solvent recovery means such that the active substance achieves a certain level on an interface device which is permeable for the one active substance. Thereby the active substance is absorbable via diffusion from the interface device by a porous surface to be treated.

An aseptic powder of N(2)-L-alanyl-L-glutamine is prepared through adding N(2)-L-alanyl-L-glutamine to distilled water in aseptic condition, stirring, heating for dissolving, adding medical activated carbon, stirring, filtering for removing activated carbon, millipore filtering for removing bacteria, adding aseptic alcohol to educe out crystals, filtering, washing with cold alcohol, and vacuum drying. It has high optical and thermal stability.

Compositions, methods of fabrication and methods of treatment for the controlled release of a therapeutic substance to a treatment region are disclosed herein. In some embodiments, block copolymer-based release platforms (modified or unmodified) can be used to deliver a therapeutic substance to an inflamed site in, for example, the coronary tree or the kidney glomeri. The platforms can be carriers of at least one therapeutic substance. An external “trigger”, or stimulus, such as radiation, ultrasound, temperature, a magnetic field, a change in pH, a change in ionic strength or release of an enzyme, can be used to destabilize the platform in order to release its payload in a controlled manner once at a treatment site. Delivery devices can include a syringe, an infusion catheter, a porous balloon catheter, a double balloon catheter and the like.

The invention relates to a preparation method for a water-soluble fertilizer through high tower melt granulation. The method comprises the following steps: adding ammonium nitrate or a mixture containing ammonium nitrate into a melting tank, individually adding ammonium phosphate and water or adding a mixture of ammonium phosphate and water to reduce the melting point of ammonium nitrate and carrying out melting at a temperature of 140 to 145 DEG C; delivering a molten slurry into a mixing system, adding a nitrogenous fertilizer, a phosphate fertilizer, a potash fertilizer and water-soluble trace elements needed in preparation of a fertilizer and carrying out uniform mixing at a temperature of 145 to 152 DEG C; and carrying out emulsification, granulation, heat exchange, primary cooling, cooling, screening and oil injection to obtain the water-soluble fertilizer with the content of water-insoluble substances controlled to be less than 3.0%. The preparation method provided by the invention effectively reduces production of water-insoluble substances through controlling of temperature, has the advantages of novelty, environment-friendliness, low energy consumption and the like and prepares the water-soluble fertilizer which has a smooth and round shape and high strength, does not harden during storage and contains 35 to 48% of total nutrients on the basis of no increase of cost.

The invention relates to a degradation agent of the pesticide residue of Chinese herbal medicine and a production method thereof, which utilizes mirco-nano biological coating technology, enzyme active substance control and a stabilization system of active plant cell film and assists with an intelligent slow / controlled release adjuvant, thus promoting crop output and quality, degrading hazardous substances of the pesticide residue and enhancing products to achieve the international standards. The invention contains the components of oligosaccharide, selenic acid lipopolysaccharide, plant humic acid, rare earth, pectin, phytoalexin, organic matters, abscisic acid, vanillic aldehyde, amino acid, boracic acid, zinc sulfate, nicotinamide, sodiumnitro phenolate, phytic acid, ferrous sulfate, lycine, gibberellinn and chelated calcium; process water is added in sequence according to the weight mixture ratio; the mirco-nano technology is adopted and a product is obtained through coating, enveloping, technique processing treatment of mirco-nano structure, dynamic dissolution, high-pressure spray homogenization, filtering, mixing and reaction.

The present invention provides a method for suppressing power fluctuation of a high-efficiency combined power generation system that uses a byproduct gas generated in a plant, the method including the steps of adding a high-calorific-value substance having a calorific value higher than that of the byproduct gas so as to increase both the total calorie per unit of time and the calorific value per unit gas quantity up to predetermined targets; and adding a low-calorific-value substance having a calorific value lower than that of the byproduct gas so as to control the caloric value and / or the composition of the power generation fuel, whereby the total calorie and the calorific value are controlled within predetermined ranges. The present invention also provides another method for suppressing power fluctuation of a high-efficiency combined power generation system that uses a byproduct gas generated in a plant, the method including a step of alternately switching charge / discharge modes of at least two storage apparatuses to suppress the fluctuation of the power generated, and a power generating facility for these methods. According to the present invention, not only short-term power fluctuation caused inside the plant but also long-term fluctuation are also suppressed. The excess power, whose fluctuation is suppressed, can be controlled to have a power supply pattern coincident with a power demand pattern so that power can be stably supplied to a site outside the plant.

A device for the controlled filling of containers with powdered substance includes a supply vessel with a narrow exit opening for temporarily holding the powdered substance and for discharging a predetermined quantity of the powdered substance into a container located underneath the supply vessel, a vibrator means is connected to the supply vessel for effecting the discharge of the powdered substance. A sensor for determining the quantity of powdered substance discharged from the supply vessel into the container, and a control unit, which converts the data acquired by the sensor into control commands for the vibrator means is included. The sensor includes a capacitive sensor for the quantitative determination of the quantity of powdered substance falling there through during the filling process and is located between the supply vessel and the container.

The invention relates to a preparation method of thermally sensitive plant-aromatic controlled-release granules, comprising the following steps of: carrying out drying treatment on aromatic plants by using a vacuum freeze drying technology so as to basically not cause the loss of original volatile aroma in the drying treatment of materials and not damage cell structures of natural plants with optimal aromatic substance controlled-release capacity; and treating cells of the natural plants by using an ultrasonic wall-breaking technology so that appropriate cracks appear on the cell walls of the cells, wherein when temperature is raised, the cracks positioned on cell membranes are expanded to form splits due to a principle of expanding with heat and contracting with cold so as to release aromatic substances, and when the temperature is reduced, the splits are closed so as to stop releasing the aromatic substances, therefore the purpose that the aromatic substances are uniformly released with the change of the temperature is achieved. The invention breaks through the technical bottlenecks of insufficient natural sense feeling of the aroma, insufficient controlled-release capacity and uniform release capacity of the aromatic substances, and the like in the prior art and gives continue, excellent and natural aromatic feeling to aromatized products, i.e. foods, tobaccos, drugs, and the like.

The invention belongs to the pulp and paper making field and particularly relates to a method for rapidly assessing the waste paper pulp adhesive substance control effect. The method for rapidly assessing the waste paper pulp adhesive substance control effect is characterized in that after the waste paper pulp is filtered and intercepted, the content of the intercepted substance, the cation demand, the turbidity and the chemical oxygen demand (COD) of waste paper pulp filtrate can be measured at the same time. The invention is suitable for selecting waste paper pulp adhesive substance control agent / system and assessing the effect thereof and has the advantages of easy operation, rapid measurement speed, and the like.

The invention belongs to the technical field of memory materials, and specifically relates to a shape memory material based on olefin block copolymers (OBCs). The material is composed of at least the following two components of OBCs and small molecular crystalline substances, and also may comprise other components. The material is characterized in that a permanent shape is determined by the OBCs and shape change is controlled by the small molecular crystalline substances. Polymer matrixes may the OBCs in various structures and compositions, and the small molecular crystalline substances may be small molecules having good compatibility with the OBCs and melting points lower than those of the OBCs. The method has the advantages that the OBCs are selected as the matrixes; the obtained modified materials have excellent mechanical properties and very large breaking elongation; the optional small molecular crystalline substances have various species; a transition temperature of the material can be controlled precisely by changing the species of the optional small molecular crystalline substances; and since the OBCs are produced in large scale and processing and shaping method for the OBCs are very mature, the shape memory composite material has possibility for large-scale production. The shape memory composite material has huge potential application values in intelligent textiles and thin film materials.

The invention discloses a low-entropy mixed combustion gas-liquified substance engine, which comprises an internal combustion engine and a gas-liquified substance storage tank, a combustion chamber of the internal combustion engine is provided with an admission passage and an exhaust passage, the gas-liquified substance storage tank is communicated with the combustion chamber sequentially via a high-pressure liquid pump and a gas-liquified substance control valve, the gas-liquified substance in the gas-liquified substance storage tank enters the combustion chamber in the form of liquid or a critical state or ultrahigh-pressure gas, and after the gas-liquified substance in the gas-liquified substance storage tank and existing gaseous working medium are mixed, the next process is carried out. The low-entropy mixed combustion gas-liquified substance engine disclosed by the invention not only is highly efficient, but also can utilize the gas-liquified substance produced by a valley current or unstable generating system to increase the efficiency of utilizing wind energy, solar energy and water resources.

An apparatus and associated methods of use for a controlled combination of reagents is disclosed. The apparatus includes a vessel 400, a vessel insert 220, and a cap element 200. The vessel 400 has a body portion 410 for receiving a biological sample. The vessel insert 220 receives at least one reagent therein. Preferably, the vessel insert 220 is received in a portion 420 of the vessel 400. The cap element 200 is attached to the vessel 400 to secure the vessel insert 220 in the vessel 400. During use, the vessel insert 220 is adapted to release its contents when the biological sample is introduced into the body portion 410 of the vessel 400 upon application of an intermixing force to the vessel insert 220. A variety of intermixing forces may be applied, depending upon the embodiment of the present invention and its associated methods of use.

The present invention discloses an environmental-friendly preparation method of N-hydroxymethyl-alkyl acrylamide, which is simple in process and mainly comprises the following steps: formaldehyde generating agent is added to the aqueous solution of alkyl acrylamide for reaction; in the reaction process, alkaline substances are used to control the pH value of the reaction solution between 9.0 and 11.0, and the reaction temperature is controlled to 20-50 DEG C; after the reaction solution is clarified, acidic substances are added to adjust the pH value of the reaction solution between 6 to 7; finally a proper amount of polymerization inhibitor is added to the solution, so that the transparent N-hydroxymethyl-alkyl acrylamide aqueous solution product. The product prepared through the method of the invention can be used to prepare acrylic resin dry strengthening agent and humidification strengthening agent.

A method suitable to reprocess a semiconductor substrate is provided. A semiconductor substrate in which a projection including a damaged semiconductor region and an insulating layer is provided in a peripheral portion of the semiconductor substrate is subjected to etching treatment for removing the insulating layer and to etching treatment for removing the damaged semiconductor region selectively with a non-damaged semiconductor region left using a mixed solution including nitric acid, a substance dissolving a semiconductor material included in the semiconductor substrate and oxidized by the nitric acid, a substance controlling a speed of oxidation of the semiconductor material and a speed of dissolution of the oxidized semiconductor material, and nitrous acid, in which the concentration of the nitrous acid is higher than or equal to 10 mg / l and lower than or equal to 1000 mg / l. Through these steps, the semiconductor substrate is reprocessed.

The invention discloses an application of cationic etherification polyvinyl alcohol as a control agent of a gummy substance in a pulping and papermaking process. The cationic etherification polyvinyl alcohol controls the gummy substance generated in the pulping and papermaking process. The cationic etherification polyvinyl alcohol is prepared by a reaction of polyvinyl alcohol and a cationic etherifying agent under the action of an alkaline catalyst. The cationic etherification polyvinyl alcohol has both a polyvinyl alcohol structure and a cationic quaternary ammonium group, thereby being capable of passivating the exposed surfaces of gummy substance particles to be not sticky, and further being capable of fixing gummy substance particles without stickiness to fibers to reduce deposition of the gummy substance on a machine wire, a headbox surface, a screen and the surfaces of other mechanical equipment while being used as the control agent of the gummy substance in the papermaking process, and solving the problems of lowered production efficiency of a paper machine and quality of paper (boards) caused by the deposition.

A method suitable to reprocess a semiconductor substrate is provided. A semiconductor substrate in which a projection including a damaged semiconductor region and an insulating layer is provided in a peripheral portion of the semiconductor substrate is subjected to etching treatment for removing the insulating layer and to etching treatment for removing the damaged semiconductor region selectively with a non-damaged semiconductor region left using a mixed solution including nitric acid, a substance dissolving a semiconductor material included in the semiconductor substrate and oxidized by the nitric acid, a substance controlling a speed of oxidation of the semiconductor material and a speed of dissolution of the oxidized semiconductor material, and nitrous acid, in which the concentration of the nitrous acid is higher than or equal to 10 mg / l and lower than or equal to 1000 mg / l. Through these steps, the semiconductor substrate is reprocessed.

The invention belongs to the field of drug preparations and relates to a desonide preparation, in particular to a desonide gel preparation with more uniform active ingredient content and higher stability. The viscosity of the desonide gel preparation is controlled to be 40,000-350,000mPa.s. The desonide gel preparation has high physical stability; after high-temperature, low-temperature and freezing and thawing cycle survey, the active ingredients are suspended in gel and do not have a remarkable sedimentation trend, the product content is excellent and stable in uniformity, and the defects that the active ingredients in an existing desonide gel preparation are remarkable in sedimentation and non-uniform in content are overcome; and the desonide gel preparation has high chemical stability, and related substance control meets existing impurity control standards, so that the desonide gel preparation is superior to existing market products.

The invention provides a method for determining the content and impurities of a levocarnitine injection by hydrophilic interaction chromatography. A result of methodology validation shows that the method is high in degree of separation, has an accurate determination result, can be used for controlling relevant substances of the levocarnitine injection, and provides reference for increase of a quality standard of the levocarnitine injection. Meanwhile, the method can be used for determining the content and impurities of the levocarnitine injection.

A method of forming a conductor pattern using magnetic force is disclosed. The method includes: transferring a magnetization pattern into a magnetic material; and depositing a species on the magnetic material, the species preferentially accumulating according to the pattern in the magnetic material. A set of conductors is then formed such that the substance controls the pattern of the conductors.

The invention discloses a measuring method for high-zinc slag of a wet-process zinc smelting system and organic substances in a solution. The measuring method comprises the following steps: dissolvingthe high-zinc slag of the wet-process zinc smelting system and the organic substances in the solution with an organic solvent, and extracting the high-zinc slag of the wet-process zinc smelting system and the solution to an organic phase through an extracting agent; washing metal ions in the organic phase by a complexing agent, and performing low-temperature concentration on the cleaned loaded organic phase, and weighing, thereby obtaining total content of the organic substances. The invention provides the production site measuring method for organic substances in a wet-process zinc smeltinghigh-zinc ion solution, and solves the problems that an existing organic substance measuring method is complex, a measuring instrument is dear, a measuring range is limited and the like. The method does not need the dear instrument, is simple to operate, is good in repeatability, and achieves the key effect in organic substance control in each workshop of a wet-process zinc smelting plant.

The invention relates to a floating modular biochemistry stuffing frame and belongs to the technical field of domestic and industrial sewage treatment. The floating modular biochemistry stuffing frame comprises a floating module, a stuffing outline border and biological stuffing, wherein the floating module is made of a material the density of which is smaller than that of water, the floating module is a hollow floating box which comprises an overwater floating box body and an underwater floating box body, the overwater floating box body is connected with the top of the stuffing outline border through a connecting clamping sleeve on the bottom of the floating box, the underwater penetration of the stuffing frame is controlled by adding water or other substances into the floating box, and the underwater floating box body is connected with the stuffing outline border to support the stuffing frame and increase buoyancy force; the outline border is composed of an exhaust layer and a stuffing layer, the top of the exhaust layer is connected with the overwater floating box body, and the bottom of the exhaust layer is composed of a plurality of transversely parallel supporting rods to form the top of the stuffing layer; the stuffing layer is filled with the multiple rows of biological stuffing fixedly connected through long plastic ropes in series; besides, a scale used for measuring the underwater penetration of the stuffing frame is engraved on one side of the floating modular biochemistry stuffing frame. The components of the floating modular biochemistry stuffing frame can be installed on site, installation and maintenance are convenient, and underwater penetration adjustment can be achieved.

An active substance matrix patch for controlled delivery of at least one hyperemic active substance to the skin, comprising a flexible cover layer and a water insoluble, pressure sensitive adhesive active substance matrix, wherein said adhesive matrix is free from mineral oils and tackifier resins and comprising:a) from 25 to 90% by weight of synthetic framework polymers based on polyisobutylene,b) from 5 to 40% by weight of amorphous poly-α-olefin,c) from 10 to 60% by weight of an insoluble hydrophilic filler having an average particle size of less than 100 μm, andd) from 0.001 to 20% by weight of the hyperemic active substance.

The invention discloses a preventing and controlling method of ampullaria crossean. The preventing and controlling method is characterized by comprising the steps of 1, invasion interception, wherein a block is arranged at a water inlet of a water pond, and plants with a repellent effect of ampullaria crossean are planted around the water pond; 2, trapping and killing, wherein ampullaria crossean catching nets are arranged in the middle and the periphery of the water pond, and plants with the attracting effect of ampullaria crossean are planted around the ampullaria crossean catching nets; 3, plant secondary substance control, wherein a powder mixture of nerium indicum and hibiscus is thrown at the low-lying position of the water pond. According to the preventing and controlling method of ampullaria crossean, by utilizing the ecological habit of ampullaria crossean to conduct prevention and control, a better preventing and controlling effect is achieved; the plant source secondary substance is adopted to prevent and control ampullaria crossean, and the preventing and treating method is safe to the environment and other aquatic life, is an environment-friendly and efficient preventing and controlling method, and is suitable for being applied and popularized in prevention and control of ampullaria crossean.

The present invention makes it possible to attain various applications using antifreeze activity without an antifreeze protein. The agent for the inhibition of ice-crystal growth includes a non-proteinaceous substance, wherein an aqueous solution of the non-proteinaceous substance in a concentration of 10 mg / ml causes the deposition of non-flat disk-shaped ice crystals. The agent for the lowering of an ice-crystal growth initiation temperature includes a non-proteinaceous substance, wherein an aqueous solution of the non-proteinaceous substance in a concentration of 10 mg / ml shows thermal hysteresis by a temperature of 0.020° C. or higher. The agent for the control of water freezing includes a non-proteinaceous substance, wherein an aqueous solution of the non-proteinaceous substance in a concentration of 10 mg / ml shows thermal hysteresis by a temperature of 0.020° C. or higher and causes the deposition of non-flat disk-shaped ice crystals. The above non-proteinaceous substances are usually polymers each having a carbon chain as the main chain.

The invention discloses an environment-friendly high-strength and easy-to-cut aluminum alloy. The environment-friendly high-strength and easy-to-cut aluminum alloy is prepared from the following components in parts by weight: 0.6 to 1.4 parts of Si, less than or equal to 0.7 part of Fe, 0.2 to 0.5 part of Cu, 0.2 to 1.0 part of Mn, 0.6 to 1.2 parts of Mg, less than or equal to 0.3 part of Cr, 0.5to 1.5 parts of Bi, a single impurity with the content of less than or equal to 0.05 part, less than or equal to 0.15 part of total impurities and the balance of Al. According to the environment-friendly high-strength and easy-to-cut aluminum alloy, Si and Mg elements and Cu element have a strengthening effect in the alloy to improve the mechanical strength of the alloy and refine grain structuresof a material; the Bi element is added to replace a common Pb element (the Pb element belongs to a banned substance control element in environment protection) and has the effect of optimizing alloy cutting performance, so that the material is easily subjected to chip breaking in a machining process and is not wound on a knife. The final tensile strength of the material can reach 400Mpa or more and the material rigidity can reach HB 110 or more.