308results about How to "Large distribution area" patented technology

The invention relates to an anti-back-splash sand blasting perforator, which comprises a body and a nozzle, wherein a groove is formed in the outer wall of the body; an installation hole is formed in the middle of the groove; the side wall of the groove is inclined; the nozzle is installed in the installation hole; the outer end of the nozzle stretches out from the bottom surface of the groove. The anti-back-splash sand blasting perforator is simple in structure, less in parts, and easy to process and assemble; through the arranged groove and a bulge on the outer end of the nozzle, a flow guide structure is formed around the nozzle, so that back-splash liquid can be timely and uniformly flown when back splashing on the perforator, can be prevented from forming vortex in the groove, and can be prevented from flowing in the groove for a long time; the erosion of the back-splash liquid on the perforator is reduced, and the service life of the perforator is improved.

The invention provides microwave-plasma chemical vapor deposition equipment. The microwave-plasma chemical vapor deposition equipment comprises a microwave source, a first waveguide tube, a microwave mode converter and a resonance device, wherein one end of the first waveguide tube is connected with the microwave source, and the other end of the first waveguide tube is connected with the microwave mode converter; the resonance device comprises a resonance cavity and a microwave gathering unit, the top of the resonance cavity is provided with a medium window, the microwave mode converter is located on the upper part of the medium window, can perform mode conversion on microwave from the microwave source, and can transfer the microwave to the resonance cavity through the medium window, a base is arranged in the resonance cavity, a substrate is supported on the base, the supported substrate can be located below the medium window due to the arrangement of the substrate, and the microwave gathering unit is arranged on the resonance cavity and can gather the microwave transferred to the resonance cavity on the substrate. According to the microwave-plasma chemical vapor deposition equipment, through the arrangement of the microwave gathering unit, the distribution area of a microwave electric field on the substrate is expanded, so that microwave energy can be better concentrated on the area above the substrate, and deposition of a large-area diamond film is facilitated.

The invention provides a cefdinir dispersible tablet and a preparation method thereof, and the cefdinir dispersible tablet contains cefdinir with effective dose and pharmaceutic adjuvant which includes disintegrant and disintegrant-promoting aerosol; in every 100 parts of cefdinir, the dosage of the disintegrant is 2-60 parts, and the dosage of the disintegrant-promoting aerosol is 0.1-45 parts; after being taken orally, the cefdinir dispersible tablet of the invention can quickly disintegrate, and the cefdinir which is the active ingredient of the dispersible tablet has the accumulating dissolution rate of over 102.0% within 15 minutes. Compared with other medicines, the accumulating dissolution rate of cefdinir capsule is 98.3%. The cefdinir dispersible tablet are evenly dispersed into fine particles, so as to have remarkable disintegration and leachability capacity compared with the compressed tablets, realize the rapid absorption of medicine, the function of rapid onset, and improve the bioavailability of human body.

An ultrasonic consumption meter includes an ultrasonic transducer for emitting and receiving ultrasonic waves, a flow channel, an electronic circuit for operating the meter, and a housing for the ultrasonic transducer and the electronic circuit. The housing is locked in position relative to the flow channel by a locking mechanism.

The invention discloses a memantine hydrochloride capsule sustained-release preparation, wherein the preparation is composed of two parts, namely, immediate-release grains and sustained-release grains; the sustained-release part is composed of a blank pellet core, a medicine layer and a release control layer; and the immediate-release part is composed of a blank pellet core and a medicine layer. The capsule is uniform in content, good in release effect, stable in blood concentration, good for reducing the toxic and side effects of medicines, and is capable of being used for treating moderate-to-severe Alzheimer-type dementia, and the medicine-taking times of the patient are reduced,.

The invention provides an improving method for the center segregation of a continuous casting sheet billet based on the growth appearance analysis of a solidifying shell, which comprises the following steps: simulating and analyzing the growth appearance of the solidifying shell of the continuous casting sheet billet in the actual production process of steel continuous casting through a solidified two-dimensional heat-transferring simulation model of the continuous casting sheet billet; researching a segregation forming area and the segregation degree of the continuous casting sheet billet; starting from a secondary cooling technological structure of the continuous casting sheet billet and the cooling distribution homogeneity of the width direction of the continuous casting sheet billet, and optimizing and adjusting the secondary cooling technological structure and a secondary cooling nozzle arranging system of a continuous casting machine, in particular to a cooling nozzle arranging structure on the width direction of the continuous casting sheet billet, so as to reach the aim of controlling and improving the center segregation quality problem of the continuous casting machine. The invention makes segregation solute be evenly distributed all parts of the center of the width direction of the continuous casting sheet billet, and avoids the excessive segregation at some place caused by the local segregation aggregation of solute elements, thereby effectively lightening the center segregation problem of the continuous casting sheet billet, in particular to a plate blank.

The invention relates to trimetazidine dihydrochloride sustained control release pellet and a preparation method thereof. The sustained control release pellet structurally comprises a blank pellet core, a trimetazidine dihydrochloride medicine layer and a sustained control release coating layer from inside to outside; the preparation method comprises the following steps: preparing the blank pellet core by a centrifugal coating pelletizer, putting the blank pellet core in the centrifugal coating pelletizer under a motion state, then spraying mixed liquor of adhesive and wetting agent by a spray gun until the blank pellet core is wetted, uniformly spreading the raw trimetazidine dihydrochloride on the wetted blank pellet core through a powder supplying device to obtain a medicine-containing pellet, and carrying out sustained control release coating on the exterior of the medicine-containing pellet, thus obtaining the trimetazidine dihydrochloride sustained control release pellet. The invention is suitable for preparing the trimetazidine dihydrochloride sustained control release pellet, the preparation process is simple, and a prepared pellet product is scientific and reasonable in structure, uniform in granularity and good in release degree.

The invention discloses an environmental-friendly power cable which comprises a core wire, an aluminum tape layer lapping outside the core wire and steel-tape armoring arranged outside the aluminum tape layer, wherein the gap between the core wire and the aluminum tape layer is provided with silicon carbide mineral composite fillers, a polyethylene inner sheath is arranged between the aluminum tape layer and the steel-tape armoring, and a polyethylene outer sheath is arranged outside the steel-tape armoring. The invention has the advantages of good heat radiation property, long service life, strong flame retarding property, electricity saving, no toxicity and environmental protection.

The invention relates to the field of pharmaceutical preparations and particularly relates to a slow-release micropill preparation containing enrofloxacin and a preparation method of the preparation. The slow-release micropill provided by the invention is formed by coating an enrofloxacin micropill; the enrofloxacin micropill comprises enrofloxacin and auxiliary material and is formed through extruding and rounding; the auxiliary material is any one or more of microcrystalline cellulose, starch, cane sugar, artificial gum, lactose and sodium carboxymethyl starch; according to weight percent, the auxiliary material in the micropill accounts for 70% to 95%; and coating is made of high-molecular enteric material, film forming material, opaquer and the like. The slow-release micropill preparation has the characteristics of slow release and high bioavailability, can be used for treating bacteria and mycoplasma infection of livestocks, and has better curative effect on chronic respiratory diseases, colibacillosis and salmonellosis, and the frequency of medicine taking can be reduced; and in addition, the slow-release micropill provided by the invention has the advantages that the stability of medicine is improved, and peculiar bitter of enrofloxacin can be covered completely, so that feeding intake of the animals is not influenced, and the recovery rate is improved.

The invention discloses pantoprazole and the sodium salt enteric sustained-release micropill preparation thereof. The preparation comprises pantoprazole-containing micropills, an isolation layer, a sustained-release layer, another isolation layer and an enteric layer from inside to outside in sequence; the weight of the first isolation layer is 0.5% to 40% of that of the pantoprazole-containing micropills, the weight of the sustained-release layer is 5% to 100% of that of the pantoprazole-containing micropills, the weight of the second isolation layer is 0.5% to 40% of that of the pantoprazole-containing micropills, and the weight of the enteric layer is 20% to 200% of that of the pantoprazole-containing micropills. The pantoprazole enteric sustained-release micropills can stably release the drug.

The integrated chip includes LED bare chips, and silicon substrate. LED bare chip includes substrate, N type epitaxial layer, and P type epitaxial layer. There are two separated deposited metal layers at each LED bare chip on each top face of silicon substrate. Trap area is located at LED bare chip on silicon substrate. Adulterated isolation layer is located at bonding pad of each metal layer and silicon substrate. The isolation layer is within the trap area. Barrier layer is setup between metal layers corresponding to each LED bare chip. The method includes steps for forming barrier layer, trap area, isolation layer, metal layer, and packaging LED. The invention is applicable to area for integrating LEDs.

The invention discloses a method for improving the segregation and shrinkage of the center of a square and round billet; when a cast billet is cooled, the growth rate of solidified shells of the cast billet in an inner arc direction and an outer arc direction is relatively higher while the growth rate of solidified shells of the cast billet in a left side direction and a right side direction is relatively lower through a cooling method according to which the cooling strength in the inner arc direction and the outer arc direction of the cast billet is consistent, the cooling strength in the left side direction and the right side direction is consistent but the cooling strength in the inner and the outer arc directions is higher than that in the left and the right side directions, so that a liquid core on a solidified tail end of the cast billet is a rectangular area which is squashed in the inner and the outer arc directions and elongated in the left and the right side directions. According to the method for improving the segregation and shrinkage of the center of the square and round billet, because segregation solute elements and the distribution methods of solidification and shrinkage are controlled, the center of the cast billet is prevented from being segregated and enriched in a small area, so that the segregation and shrinkage of the center of the square and round billet and other continuous casting billets with similar width and thickness of cross sections are effectively improved, the effect is significant and stable, the use is simple and easy, the cost is low, and the cost performance in implementation is high. Simultaneously, a dynamic slight compression technology in continuous casting and a tail end electromagnetic stirring technology can be implemented.

The invention relates to a diode pumping slab fixed laser comprising a gain module, an input mirror and an output mirror. The gain module comprises a focusing mirror, a focusing hood, a slab-shaped gain medium, a heat sink and a diode array comparing a plurality of diodes, wherein the focusing hood is provided with a light inlet at the upper end and hoods a large surface of the slab-shaped gain medium, the other large surface of the slab-shaped gain medium is tightly connected with the heat sink, a pair of opposite sides of the slab-shaped gain medium is polished and coated with a reflection-reducing coating to be used as a light-transmitting surface of vibrating light or amplified light, the input mirror and the output mirror are respectively arranged at both sides of the gain module, and two sides of the slab-shaped gain medium, which are coated with the reflection-reducing coating, are opposite to form a resonance cavity. The diode pumping slab fixed laser has a simple structure, can realize the laser output with high power and high beam quality, and can be favorably applied to occasions with lower output power requirements.

The invention discloses a ferrous fumarate folic acid dispersible tablet and a preparation method thereof; the dispersible tablet is composed of 35-45 percent of composite of ferrous fumarate and folic acid and an acceptable carrier in pharmacy by mass percent; the mass ratio of ferric ions and folic acid in the composite of ferrous fumarate and folic acid is 150:1: the acceptable carrier in pharmacy comprises 30-60 percent of fillers, 2-10 percent of binding agents, 3-15 percent of disintegrants and 0.5-5 percent of lubricants by mass percent; the dispersible tablet is prepared by a wet granulation tabletting method and is rapidly disintegrated and evenly dispersed when meeting water, the effect is rapid, the bioavailability is high, and adverse reaction caused by overhigh local drug concentration of gastrointestinal tract can be alleviated or avoided, and the carrying and medicine taking are convenient; the preparation process is simple, the cost is low, the preparation is stable, safe and effective, thereby being suitable for industrial production.

The invention discloses a light source assembly for a projection system. The light source assembly comprises the components of a light guide tube with a hollow inner part, light emitting elements which are arranged outside the left side and the right side of the light guide tube. The light guide tube is composed of a left reflector, a right reflector, an upper reflector, a lower reflector and a back reflector. The inside surfaces of the left reflector and the right reflector are oblique surfaces. The two oblique surfaces are symmetrically arranged and the distance between the two oblique surfaces gradually increase from back to front. The inner part of the light guide tube is provided with a trumpet-shaped emergent chamber with a frontward opening. The front end of the light guide tube is provided with a reflector cup. The light emitting surface of each light emitting element emits light. The light penetrates through the reflector and a phosphor powder at the light emitting surface side. After light which is excited from the phosphor powder is reflected by a reflecting film for many times in the light guide tube, the light is transmitted out of the trumpet-shaped emergent chamber. Partial light which is emergent from the trumpet-shaped emergent chamber is reflected and emitted out by the reflector cup, and the other part is directly emitted out through the reflector cup. Based on a relatively small light emitting surface, the light source assembly for the projection system has advantages of increasing power of the light source assembly and effectively improving optical efficiency of the light source assembly.

The invention provides an integrated clay circulation crushing and drying tank for building construction, comprising a tank body; a cover plate is arranged at the top opening of the tank body; an exhaust pipe is welded and fixed on the left side of the cover plate; The surface is equipped with a cleaning device; the feed pipe is welded and fixed on the top side wall of the tank body, and the discharge pipe is welded and fixed on the bottom side wall of the tank body; The middle part of the tank is equipped with a first crushing and distributing device and a second crushing and drying device; the outer wall of the tank is provided with a lifting device; the present invention uses the first crushing and distributing device to shear and pulverize clay in one direction , through the second crushing and drying device, the clay is sheared and crushed in another direction, and the distribution area of ​​hot air is expanded to improve the drying uniformity of the clay; the cyclic crushing and drying of the clay is realized through the lifting device, which is convenient for improving the crushing efficiency. quality and dry quality.

The invention provides a warm-keeping type moisture absorbing and sweat releasing felt fabric with a bionic structure. The fabric is a multi-layer fabric woven by a double warp beam; a warp system in the fabric is separated layer by layer from a bottom layer of the fabric to a top layer of the fabric in the thickness direction of the fabric to form a multi-level bionic structure similar to wool primary fiber; wool warps in the fabric twists on the surface layer of the fabric and forms felt on the surface of the fabric after felt cutting and loosening; the felt is highly controlled; and in one fabric weave circulation, 12 warps are formed and composed of 6 felt warps, 6 body warps and 36 weft yarns. Due to the structure of the fabric disclosed by the invention, the transmission channel of the water from the fabric bottom layer to the fabric top layer is effectively shortened and the moisture guiding efficiency of the fabric is effectively improved; the bionic felt fabric can be produced on a common weaving machine, so that the production cost is saved; the fabric has good elasticity and fluffiness; the felt on the surface of the fabric is full and good in warm-keeping performance; and a moisture guiding channel of the fabric warp system is continuous, so that the moisture comfort of the fabric is good and the fabric is good warm-keeping fabric in winter.

The invention relates to a preparation method of a concentrated pill made of Chinese traditional medicine for anti-aging effect on brain, adopting the production technique such as alcohol extracting, water extracting-alcohol precipitating, attritioning, concentrating under vacuum , spray drying and vacuum drying in decompression at low temperature and repulverizing respectively according to the properties of different medicinal materials and the efficacies of different medicinal materials in prescriptions to prepare a drug powder. A small amount of the disintegrating agent is added into the powder and then blended; water or the alcohol with certain consistency is taken as wetting agents; then palletizing, polishing, selecting, drying and film coating process are carried out. Or the powder is palletized with over 90 percent alcohol, dried, arranged and then added with a small amount of disintegrating agent and lubricant, pelted by dry method and coated; the concentrated pill made of the Chinese traditional medicine for anti-aging effect on brain is obtained. The pill has high drug content, small diameter and small clinic dose, which is convenient for the patient to swallow and prevents the stomach from being irritated by the capsule shell. With rapid treatment effect and high bioavailability; the film coating process prevents the pill from going bad due to the moisture absorption, and enhances the stability of the preparation.