32results about How to "Maintain long-term stability" patented technology

Packaged patch (10) according to the invention comprises patch (2) situated in space (4) inside patch package (3) composed of laminated packaging material (1), and its edges are sealed. Laminated packaging material (1) comprises hygroscopic material layer (13) made of LDPE containing 20–40 wt % of an inorganic filler, situated between moisture-permeable material layer (14) made of LDPE and having a moisture permeability of 40–120 g / m2 / day and a screen material layer which blocks penetration of moisture, etc. and is composed of HDPE layer (12) and aluminum foil (11). The saturation hygroscopicity of laminated packaging material (1) is 2–30 g / m2 under atmosphere conditions with a temperature of 25° C. and a relative humidity of 75%. This construction sufficiently reduces the effect of moisture on a drug in patch (2) and allows patch (2) to be held in a stable state for prolonged periods, while also improving the economy and handleability of patch package (3).

The present invention is directed to a synthetic biomaterial compound based on stabilized calcium phosphates and more particularly to the molecular, structural and physical characterization of this compound. The compound comprises calcium, oxygen and phosphorous, wherein at least one of the elements is substituted with an element having an ionic radius of approximately 0.1 to 1.1 Å. The knowledge of the specific molecular and chemical properties of the compound allows for the development of several uses of the compound in various bone-related clinical conditions.

Herein is provided a recombinant lentiviral vector preparation, in which the preparation comprises: a) an effective dose of the recombinant lentiviral vector; b) a histidine hydrochloride buffer for keeping a pH value of the preparation in the range of 6.0-8.0; and c) a carbohydrate.

The invention belongs to the field of furnace lining repairing, and particularly relates to a furnace lining gap repairing material and a furnace lining gap repairing method. The furnace lining gap repairing material provided by the invention comprises the following components: 25 to 40 wt% of inorganic fibers, 2 to 10 wt% of an expansion filler, 2 to 15 wt% of refractory powder, 10 to 20 wt% of abinding agent and 30 to 60 wt% of a solvent, wherein the inorganic fibers comprise one or more selected from the group consisting of glass fibers, rock wool fibers, aluminum silicate fibers, magnesium silicate fibers, calcium silicate fibers, zirconium-containing fibers and aluminum oxide fibers; and the expansion filler comprises one or more selected from the group consisting of expanded perlitepowder, expanded vermiculite powder, expanded kyanite powder and sillimanite powder. The composition of the furnace lining gap repairing material is optimally designed, and particularly, proper typesof the inorganic fibers and the expansion filler with proper usage amounts are matched and selected, so the repairing material has a very excellent furnace lining gap repairing effect, and effectively prolongs the service life of a furnace lining.

The present invention relates to a damming method by utilizing quick solidification of red-mud, and is a damming technique by adopting red-mud sintering process. Said method includes the following steps: embanking subdam and dam body, using plastic film to wrap subdam to form subdam wrapped layer; in the course of embanking red-mud subdam adding solidifying agent whose added quantity is 3-5% of red-mud weight into the red-mud, and in the course of embanking dam body adding permeation setting accelerator whose added quantity is 0.01%-1% of red-mud weight; in the dam body interior erecting reinforced steel nets on two subdam bodies.

A substitution gold plating solution for performing uniform gold plating directly on copper wiring of a printed circuit board is provided and a gold plating method using the same is provided, the solution comprising a purine-based compound or a pyrimidine-based compound having a carbonyl oxygen used as a localized corrosion inhibitor, a water-soluble gold compound, an aminocarboxylic acid as a complexing agent, a dicarboxylic acid as a conductivity improving agent, an α-hydroxycarboxylic acid and heteroaryl carboxylic acid as a base metal elution and re-precipitation preventing agent, a sulfite compound as a gold ion stabilizer, an axole compound as a surface corrosion inhibitor, other surfactants, crystal regulators, pH adjuster, and buffers.The substitution-type electroless gold plating solution according to the present invention prevents the localized corrosion of the copper surface, which is the base metal, and thus the gold plating film produced is excellent in solder mounting reliability.

The invention provides a laser frequency locking method, device and system. The method comprises the following steps of: locking the laser frequency by using an optical cavity longitudinal mode; obtaining the non-Doppler saturation absorption signal of the infrared vibrational-rotational transition of the molecule at the laser frequency; according to the non-Doppler saturation absorption signal, obtaining the error signal, wherein the center of the error signal corresponds to the transition center of the non-Doppler saturation absorption signal; according to the error signal, adjusting the laser frequency so that the center of the laser frequency is equal to the transition center of the Doppler-free saturation absorption signal. A laser frequency is locked by that longitudinal mode of theoptical cavity, In the case of precise locking, the linewidth of the laser can also be narrowed. At the same time, the linewidth of the infrared oscillation transition of the molecule is narrowed, which is generally limited by the widening of the transit time, and the magnitude of the linewidth is in the order of hundred kilohertz. Therefore, the long-term stability of the laser frequency can be maintained by locking the laser frequency at the saturation absorption center of the infrared oscillation transition of the molecule.

A substitution gold plating solution for performing uniform gold plating directly on copper wiring of a printed circuit board is provided and a gold plating method using the same is provided, the solution comprising a purine-based compound or a pyrimidine-based compound having a carbonyl oxygen used as a localized corrosion inhibitor, a water-soluble gold compound, an aminocarboxylic acid as a complexing agent, a dicarboxylic acid as a conductivity improving agent, an α-hydroxycarboxylic acid and heteroaryl carboxylic acid as a base metal elution and reprecipitation preventing agent, a sulfite compound as a gold ion stabilizer, an axole compound as a surface corrosion inhibitor, other surfactants, crystal regulators, pH adjuster, and buffers. The substitution-type electroless gold plating solution according to the present invention prevents the localized corrosion of the copper surface, which is the base metal, and thus the gold plating film produced is excellent in solder mounting reliability.

A freeze-dried product containing a platinum (II) complex represented by the following general formula as a primary component. The freeze-dried product according to the present invention has superior storage stability, and handling thereof for administration in medical treatments is facilitated due to rapid dissolution thereof in water for injection. In addition, they are characterized in requiring no special storage conditions such as refrigeration and freezing.

The present invention relates to (1) a deproteinizing agent for natural rubber latex, comprising a protease and one or more water-soluble polymers as an active component; (2) a deproteinized natural rubber latex, which is prepared by subjecting to a deprotenization treatment using the deproteinizing agent, and a method of producing the same; (3) a method of producing a rubber product, which comprises incorporating at least a vulcanizing agent into the latex (2), dipping a mold in the resulting compound latex, and vulcanizing and drying a rubber film formed on the mold; and (4) a method of producing a rubber product, which comprises incorporating at least a heat sensitizer and a vulcanizing agent into the latex (2), dipping a mold in the resulting heat-sensitive coagulable compound latex, and vulcanizing and drying a rubber film formed on the mold.

The invention relates to a silicon etching solution for removing abrasive grains. The etching solution is composed of nitric acid, hydroxylamine nitrate, fluorosulfonic acid, ammonium bifluoride, xenon difluoride, sulfuric acid, a thickening agent and deionized water. The thickening agent can be any one of polyacrylamide, hexanol, octanol, polyethylene glycol, polyvinylpyrrolidone and the like. Hydroxylamine nitrate and fluorosulfonic acid react to generate hydrofluoric acid, xenon difluoride is slowly decomposed in an acid environment to generate hydrofluoric acid, the concentration of hydrofluoric acid in the etching liquid composition is increased, the time-dependent change of the etching liquid composition can be inhibited, and the stable etching rate is maintained. The abrasive grainremoving etching solution can be directly used for the back roughening process of an abrasive disc, deep mechanical abrasive grains are etched, the polishing and abrasive grain removing procedure is omitted, the cost is saved, the production efficiency is improved, and meanwhile the stable etching service life can be maintained.

The invention discloses a preparation method of a hydrophilic poly(vinylidene fluoride) microfiltration membrane. A heterogeneous modification process of conventional polydopamine-modified PVDF is promoted to a homogeneous process, and in the process of homogeneous polymerization of dopamine, polydopamine molecules combine with PVDF molecular chains through strong non-covalent bonds; and then water-soluble polymer is introduced to chemically react with polydopamine so as to obtain a raw material of the hydrophilic PVDF, finally the raw material of the hydrophilic PVDF is redissolved, and a pore-forming agent and additive are added so as to obtain the microporous membrane. Through the method, the efficiency of hydrophilic modification is improved, the obtained hydrophilic PVDF microfiltration membrane has excellent hydrophilicity, the long-term stability and chemical stability of a hydrophilic coating on the PVDF microfiltration membrane are improved remarkably, the problems of a long operation period of the polydopamine-modified PVDF microfiltration membrane, desorption of the polydopamine coating after long-term use is conducted and the like are solved, and the preparation efficiency of the hydrophilized PVDF microfiltration membrane is improved greatly.

Provided is a quinoline derivative having indoleamine-2,3-dioxygenase inhibitory activity, specifically, provided is a compound of general Formula (I) or pharmaceutically acceptable salt thereof, its pharmaceutical composition, preparation method and use in the manufacture of a medicament for immunomodulating and preventing and / or treating of a disease associated with IDO expression abnormality and / or tryptophan metabolism abnormality. Also provided is use of a combination medication of the quinoline derivative and HDAC inhibitor and its use in the manufacture of an anti-tumor drug.A-X—B—Y-M   Formula (I)

A magneto-rheological polishing liquid circulation device that can stabilize the performance of the polishing liquid for a long time. Its liquid mixing tank is connected to the water tank through a metering pump, and the cooler is connected to the liquid mixing tank through a cooling pipeline; The liquid mixing tank, electromagnetic flowmeter, nozzle, recovery device and recovery pump form a polishing liquid circulation loop, and the liquid mixing tank and electromagnetic flowmeter connected in sequence through the non-polishing circulation pipeline form a non-polishing circulation loop, and the polishing liquid circulation loop and the non-polishing The circulation loop is connected in parallel and a switching control valve is provided at the parallel connection of the two. A helical coil is wound outside a section of pipeline between the liquid mixing tank and the switching control valve; the electromagnetic flowmeter and the helical coil are connected to the input end of the computer, and its control The output ends are respectively connected with the switching control valve, the cooling machine, the power pump and the metering pump. The invention has the advantages of high control precision, good stability, etc., and can provide cheap, reliable and stable magnetorheological polishing liquid for magnetorheological polishing processing for a long time.

Herein is provided a recombinant lentiviral vector preparation, in which the preparation comprises: a) an effective dose of the recombinant lentiviral vector; b) a histidine hydrochloride buffer for keeping a pH value of the preparation in the range of 6.0-8.0; and c) a carbohydrate.

The invention discloses a coating for delaying the corrosion of a power system earth mat. Sol is prepared from the following raw materials: 0.1-0.6 mol of metal organic compound containing alkoxy, 1.0-4.0 mol of alcoholic solvent, 0.0015 mol of acidity regulator, solid fine particles accounting for 0.1-40 percent of the total mass of a finial coating and 0.001-0.005 mol of catalyst, wherein the metal organic compound containing alkoxyl is a mixture of one or more of ethyl orthosilicate, butyl titanate, tetrabutyl zirconium and gamma-aminopropyltriethoxysilane according to any proportion; the alcoholic solvent is ethanol; and the acidity regulator is acetic acid. The costing is a silicon dioxide-based organic-inorganic compound costing, which can be used for effectively improving the environmental corrosion resistance of an earth mat material, maintaining long-term stability of a material surface, prolonging the fault-free running period of an earth mat system and further raising the safety running level of a power system. As proved by a simulation test piece soil burying acceleration test, the surface state of a test piece is stable basically, and the using requirement can be met.

The present invention is directed to a synthetic biomaterial compound based on stabilized calcium phosphates and more particularly to the molecular, structural and physical characterization of this compound. The compound comprises calcium, oxygen and phosphorous, wherein at least one of the elements is substituted with an element having an ionic radius of approximately 0.1 to 1.1 Å. The knowledge of the specific molecular and chemical properties of the compound allows for the development of several uses of the compound in various bone-related clinical conditions.

The invention relates to a multi-layer self-adhesive melt-blown cloth with sterilization and virus killing functions, a production process and a production line thereof, the multi-layer self-adhesive melt-blown cloth comprises more than two layers of melt-blown cloth, a traditional Chinese medicine layer or a chemical sterilization and virus killing component layer is arranged between every two layers, and the multi-layer structure is overlapped up and down and self-adhered. After a fiber cloth layer is formed on a melt-blowing production line adopting more than two melt-blowing nozzles, a traditional Chinese medicine layer or a chemical sterilizing and virus-killing component layer is sprayed by an atomizing or spraying device of traditional Chinese medicine or chemical liquid medicine, and meanwhile, drying and electrostatic electret are performed by an air suction drying device. The cloth is simple in structure and convenient to manufacture, has the functions of efficiently adsorbing, filtering and killing fine particulate matters, viruses and bacteria, and has the advantages of long shelf life and the like.

The present invention relates to an apparatus and a method for manufacturing instantly emulsified cosmetics. According to one aspect of the present invention, the apparatus for manufacturing instantlyemulsified cosmetics comprises a housing for forming an exterior; a pump provided in the housing for discharging an instantly emulsified emulsion to the outside of the housing; a first container provided in the housing for storing an internal fluid; a second container provided in the housing for storing a functional fluid including a functional raw material; a third container provided in the housing for storing an external fluid; a channel part provided in the housing for receiving the external fluid, the internal fluid and the functional fluid to generate an emulsion; and a tube for providing the pump with the emulsion generated in the channel part, wherein the channel part includes: a first channel for mixing the internal fluid and the functional fluid to generate a mixed fluid; and a second channel for mixing the mixed fluid provided from the first channel and the external fluid to generate an emulsion.

The present invention relates to an apparatus for manufacturing cosmetic using instantaneous emulsification. Provided according to an aspect of the invention may be an apparatus for manufacturing cosmetic using instantaneous emulsification, which includes a housing which forms an outer appearance; an internal phase container which is replaceably coupled to the housing, and which stores internal phase fluid; an external phase container which is replaceably coupled to the housing, and which stores external phase fluid; a channel unit which generates emulsion by mixing the internal phase fluid provided from the internal phase container and the external phase fluid provided from the external phase container; and an operative unit which provides external force required to form and discharge emulsion at the channel unit by manipulation of a user. The internal phase container and the external phase container have a pumping part which is operated by action of the operative unit, and the operative unit presses the pumping part of the internal phase container and the pumping part of the external phase container at the same time by external force to discharge the internal phase fluid stored in the internal phase container and the external phase fluid stored in the external phase container to the channel unit.

The invention relates to a silicon etchant for removing grain. The etching solution is composed of nitric acid, hydroxylamine nitrate, fluorosulfonic acid, ammonium bifluoride, xenon difluoride, sulfuric acid, thickener and deionized water. Wherein the thickener can be any one of polyacrylamide, hexanol, octanol, polyethylene glycol, polyvinylpyrrolidone, etc. In the present invention, hydroxylammonium nitrate reacts with fluorosulfonic acid to generate hydrofluoric acid, and xenon difluoride slowly decomposes to generate hydrofluoric acid in an acidic environment, all of which increase the concentration of hydrofluoric acid in the etching solution composition, and can inhibit the combination of the above etching solutions. The time-dependent change of the material maintains a stable etching rate. The anti-grinding etchant of the present invention can be directly used in the roughening process of the back of the abrasive disc to etch away the deep mechanical grains, omitting the polishing and de-grinding process, saving costs, improving production efficiency, and maintaining stability etching life.

The invention discloses an atmospheric multiparameter transmitter for a PM2.5 particulate matter monitor. The atmospheric multiparameter transmitter is characterized in that the upper end of a sampler pipeline (16) is connected with a sampler (1); the sampler pipeline (16) passes through a heater (2); the lower end of the sampler pipeline (16) is connected with a sensor module (15); one end of a heating power supply control unit (6) is connected with the heater (2) and the other end of the heating power supply control unit (6) is connected to a multiparameter transmitter host (10); a temperature and humidity sensor (5) is arranged on the sampler pipeline (16); an outdoor sensor (4) is positioned on the edge of the sampler (1); one end of a sensor transmission line terminal (9) is respectively connected with the temperature and humidity sensor (5), the outdoor sensor (4) and an RS232 external output communication interface (8); and the other end of the sensor transmission line terminal (9) is connected with the multiparameter transmitter host (10). The atmospheric multiparameter transmitter improves accuracy and reliability of sampling and analyzing PM2.5, has functions of monitoring, regulating and controlling temperatures, humidities and pressures inside and outside the PM2.5 sampler in real time, adopts a heat tracing condensation-preventing technology, intelligently controls sample gas into a suitable humidity range and ensures accuracy of PM2.5 measurement.

The disclosure provides a method for removing a cancer tumor stem cell and then further removing a tumor cell and provides an application of a drug molecule and its preparation in tumor treatment or prevention. On the one hand, by inducing the death of immunogenic cells, the anti-tumor immune response is enhanced. On the other hand, indoleamine-2,3-oxygenase is inhibited, immune cells, cytokines, amino acids, etc. are regulated, which improves the niche of cancer stem cells and makes them no longer conducive to the growth of cancer stem cells. Stem cell dormancy is lifted, and the sensitivity of cancer stem cells to chemotherapy drugs and immune cells is enhanced, so that cancer stem cells and tumor cells are effectively killed, and the efficacy of tumor treatment is improved.

The invention discloses ink for a ballpoint pen. The ink comprises oil-soluble dye, a film-forming agent, a solvent and a dispersing agent, wherein the film-forming agent is a mixture of a protein film-forming agent, an acrylic resin film-forming agent and a butadiene resin film-forming agent, and the dispersing agent is a mixture of tri-ethylhexyl phosphonic acid, methyl anyl alcohol, polyacrylamide and fatty acid polyethylene glycol ester. The ink is strongly erasable and easy to wipe off and accordingly paper can keep clean and tidy.

The invention belongs to the field of preparation of carbon nanotube-graphene composite materials, and discloses an ultra-short carbon nanotube-graphene composite material and a preparation method andapplication thereof. The preparation method comprises the following steps: S1, carrying out a liquid phase self-assembly method on an ultra-short carbon nanotube with the length of 310-600nm and graphene oxide to obtain a water-soluble ultra-short carbon nanotube-graphene oxide dispersion liquid; and S2, adding a reducing agent sodium borohydride in the step S1, and preparing the water-soluble ultra-short carbon nanotube-graphene composite material under the conditions that the reaction temperature is 60-90 DEG C and the time is 30-120 minutes. The method is simple in process, can be used forpreparing the relatively uniform ultra-short carbon nanotube-graphenecomposite material, and can be applied to the fields of electronic equipment heat management and heat energy storage.

The embodiment of the invention provides a composite screw which is used for solving the problem that a screw in the prior art is poor in firmness and easily falls.According to the technical scheme, the composite screw comprises a screw body and a PEEK cap which are mutually independent, wherein the screw body comprises a threaded portion and a head portion, the head portion is provided with a hole, and the PEEK cap is located on the outer side of the head portion and is connected with the head portion.The embodiment of the invention further provides a composite fixing assembly.

A carbon nanotori-based lubricant composition for tribological applications, specifically for use in machining operations, which includes distilled water and a specific content of carbon nanotori having specific properties, which make them suitable for proper dispersal in distilled water without precipitation and remaining stable for a long time in dispersion without the need to add surfactants.

The present invention belongs to the field of solar cells, perovskite materials, and photovoltaic technology. It specifically discloses the functional ionic ionic ion ingot material and its application in the preparation of solar cells.Metico3 ammonia propyramole hexomalizes (APMIHPF6) and its preparation methods, combined with hydrophobic ionic liquid and halogen leading osteotic ore structure, spiny on the dense titanium dioxide transparent film as a light anode to build a plane heterogeneous heterogeneityQuality structure perovskite solar cells, based on photovoltaic effects, simulated solar light to stimulate light sources to realize the work and performance testing of perovskite solar cells.The present invention combines a hydrophobic ionic liquid 1‑ methyl ion 3 ammonia propyimramidazole hexopophosphate (APMIHPF6) and halogen leading into a perception osteotic material system.Convenient, simple, economical, stable, and high optical conversion efficiency.