259results about How to "Improve quality uniformity" patented technology

An encoder uses multi-pass VBR control strategies to provide constant or relatively constant quality for VBR output while guaranteeing (within tolerance) either compressed file size or, equivalently, overall average bitrate. The control strategies include various techniques and tools, which can be used in combination or independently. For example, in a first pass, an audio encoder encodes a sequence of audio data partitioned into variable-size chunks. In a second pass, the encoder encodes the sequence according to control parameters to produce output of relatively constant quality. The encoder sets checkpoints in the second pass to adjust the control parameters and/or subsequent checkpoints. The encoder selectively considers a peak bitrate constraint to limit peak bitrate. The encoder stores auxiliary information from the first pass for use in the second pass, which increases the speed of the second pass. Finally, the encoder compares signatures for the input data to check consistency between passes.

An organic light-emitting diode display device includes a data line, a first and second gate lines crossing the data line, an emission line crossing the data line, an organic light-emitting diode device having an anode electrode and a cathode electrode, a high-level potential driving voltage source for supplying a high-level potential driving voltage to the anode electrode, a first switch element for connecting a cathode electrode of the organic light-emitting diode device to a first node, a second switch element for connecting the data line to a second node, a third switch element for connecting the second node to a ground voltage source, a driving element for adjusting a current flowing between the cathode electrode of the organic light-emitting diode device and the first node in accordance with a voltage of the first node, a first capacitor connected between the second gate line and the first node, and a second capacitor connected between the first node and the second node.

The invention relates to Chinese medicinal composition granules and a preparation method thereof. The Chinese medicinal composition granules comprise the following ruptured powder in part by weight: 3 to 18 parts of American ginseng ruptured powder, 1 to 24 parts of pseudo-ginseng ruptured powder, 6 to 36 parts of dendrobium ruptured powder, and 9 to 45 parts of root of red-rooted salvia ruptured powder, wherein the granularity D90 of the ruptured powder is between 5 and 75 mu m. The invention also provides a method for preparing the Chinese medicinal composition granules. The method comprises the following steps of: uniformly mixing the American ginseng ruptured powder, pseudo-ginseng ruptured powder, dendrobium ruptured powder, and root of red-rooted salvia ruptured powder of which the D90 is between 5 and 75 mu m; preparing a soft material by adopting aqueous ethanol at the concentration of over 20 vol percent; and after granulating by using a granulator with 10 to 30 meshes, drying and finishing the granules to obtain the Chinese medicinal composition granules. The Chinese medicinal composition granules are applied to preventing and regulating human cardiac-cerebral vascular system diseases and sub-health state such as weak immunity and fatigability, have the obvious advantages of high medical effect, high quality uniformity, convenient carrying and administration, safety, reliability, and the like, and can meet the requirement on modern fast-paced lifestyle.

Provided is a process for processing a filament-shaped stem and a strip-shaped stem simultaneously. The process is characterized in that the first step of tobacco stem expansion, the second step of tobacco stem storage, the third step of tobacco stem separation and the fourth step of tobacco stem classification processing are included; in the first step of tobacco stem expansion, fed tobacco stems are expanded in a stem explosion mode or a microwave mode; in the second step of tobacco stem storage, the expanded tobacco stems are stored for 5 days to two years, so that the tobacco stems are structurally solidified; in the third step of tobacco stem separation, two types of the expanded tobacco stems obviously different in size are separated through tobacco stem separation equipment, one type of tobacco stem is thin expanded tobacco stems, the width or the diameter of each tobacco stem is smaller than 5 mm, and the other type of tobacco stem is thick expanded tobacco stems, and the width or diameter of each tobacco stem is larger than 5 mm; in the fourth step of tobacco stem classification processing, according to the characteristics of the thin expanded tobacco stems and the characteristics of the thick expanded tobacco stems, classification processing is carried out in the corresponding processing process, the thin expanded tobacco stems are processed to be filament-shaped stems and the thick expanded tobacco stems are processed to be strip-shaped stems.

The invention discloses a III-group nitride light-emitting diode (LED) and a manufacturing method thereof. The LED comprises a substrate and a semiconductor epitaxial laminate which is laminated on the substrate, wherein the semiconductor epitaxial laminate sequentially comprises an N type layer, a luminescent layer and a P type layer from top to bottom. The LED is characterized in that: an N type layer table face is formed in the N type layer by etching a part of the semiconductor epitaxial laminate; an N type electrode is arranged on the N type layer table face; a P type electrode is arranged on the upper surface of the un-etched part of the P type layer; the N type layer also comprises a uniformly doped layer of which the doping concentration is consistent and a modulation doped layer of which the doping concentration is changeable; and the modulation doped layer is arranged between the uniformly doped layer and the luminescent layer. A doped mode of the modulation doped layer is gradual transition doping which connects uniformly doped layer and the luminescent layer of which the doping concentration is consistent. The concentration change trend is decrease progressively change from the uniformly doped layer to the luminescent layer. By the LED and the manufacturing method, the crystal quality and the luminance uniformity can be obviously improved, and the lighting effect is improved.

An epitaxial film deposition system includes a reactor, a susceptor, a wafer heating unit, a reactant gas supply orifice, and an aperture for venting the reactant gas. The reactant gas is supplied to a reactor region between the susceptor and a graphite plate so as to circulate in layered flow in a direction along the reactor inner wall in the planar direction of a mounted SiC wafer. The temperature of the wafer is controlled by a high frequency coil and halogen lamps based on temperatures detected by a pyrometer. By circulating the reactant gas over the surface of the stationary wafer, it is possible to form, under various process conditions, an SiC epitaxial film having good film quality and good uniformity of film thickness, without providing any wafer rotation mechanism.

The invention belongs to the technical field of nitrocotton production methods, and in particular relates to a wood pulp nitrocotton production method. In the method, wood pulp is used as a raw material, the energy consumption in production is low, the production efficiency is high and the chroma of the product is low. The wood pulp nitrocotton production method comprises the following steps of: nitrifying wood, wherein mixed acid is a mixture of nitric acid, sulfuric acid and water, and the mixed acid comprises 20 to 55 mass percent of nitric acid, 10 to 18 mass percent of water and the balance of sulfuric acid; centrifugally driving acid to obtain acid wood pulp nitrocotton; boiling and washing the acid wood pulp nitrocotton; adding water to regulate the initial acidity to be 0.5-10g/l,and controlling the boiling and washing temperature to be 101-150DEG C; dehydrating; and driving water. The wastewater emission in the refined cotton production process is reduced, environmental pollution is lightened, and the aims of saving energy and reducing emission can be fulfilled.

The invention relates to a method for manufacturing a superfine denier modified terylene torque-less false twist textured yarn and a special thread guide. The invention aims to solve the technical problem of providing a special thread guide and a manufacturing method using the thread guide. The thread guide comprises two thread rollers (5-3) on the thread guide shaft (5-1), wherein the two thread rollers can rotate independently, and a gap is reserved between the two thread rollers. The manufacturing method comprises the following steps that: two threads (11) get into a front thread-separation thread guide (1) of a first roller along the respective thread path; then the threads pass through a roller (2), a first hot box inlet thread guide (3), a first hot box (4), a special double-thread free-rotation thread guide (5), a special turning double-thread free-rotation thread guide (6), a cooling plate (7), a false twister (8), a second roller (9) and a network nozzle (10) in turn for stranding; and then the threads get into a second hot box (12) to perform heat shaping and obtain the product.

The invention relates to one-step complete sets of equipment and a production method of polyphenylene sulfide composite filament. Linear polyphenylene sulfide (PPS) is taken as cortex and polyester ethylene terephthalate (PET) or polyester ethylene-acid naphthalene (PEN) or polycaprolactum (PA6) or polyhexamethylene adipamide (PA66) is taken as a skin-core structure of a core layer in the polyphenylene sulfide composite filament. The composite filament one-step complete sets of equipment and the production method are adopted to produce polyphenylene sulfide composite filament. The complete sets of equipment and the production method include a spinning draft winding combination machine and a polyphenylene sulfide composite spinning preparation method. The polyphenylene sulfide composite filament is cheap with high quality. Compared with single component polyphenylene sulfide filament, the raw material cost can be reduced by more than 30-40 percent. The fiber which is used as filtering material can be widely applied to environmental protection industry.

The invention relates to a double-twist spinning method and belongs to the technical field of textile. The method adopts the follwing steps: a double-twist winding mechanism is arranged in front of adrawing system of a spinning machine, the double-twist winding mechanism consists of a double-twist structure and a winding mechanism, the winding mechanism is positioned in a yarn storage tank of thedouble-twist structure, a drawn fiber strip is output through a front roller nipper and then twisted to form a yarn, the yarn is warped by a guide wire, enters a yarn inlet pipe, a yarn running pipeand a yarn outlet pipe and runs to the tensioner, under the rotating action of a twisting disc with a rotating speed of n revolutions/min, the yarn running from the front roller nipper to the tensioner section obtains 2n twists per minute, under the action of the tensioner, the tension of the yarn is drawn out from the yarn outlet pipe, and then wound through the winding groove drum to form the drum yarn package. By adopting the method, the ring twisting and pipe winding mode of the ordinary spinning machine are changed, the double-twist spinning is adopted, thereby greatly improving the twisting efficiency, the spinning quality and the uniformity; by adopting a drum yarn winding mode, the spinning yarn package is increased, and the production efficiency is improved.

The invention discloses an assembly-typed polymer composite material cable bracket and a preparation method thereof, and relates to the field of electric material. The cable bracket comprises a vertical column 101; the side surface of the vertical column 101 is connected with at least a supporting arm 102; the vertical column 101 and the supporting arm 102 are respectively made of piece-shaped molding material mixed by steel powder. The assembly-typed polymer composite material cable bracket can resist corrosion, resist oxidation and has smooth surface.

The invention relates to a preparation method of a healthy type low temperature hot melt adhesive, which comprises the following components by weight: 45-60 parts of TPU hot melt adhesive resin, 10-20 parts of PETG, 25-30 parts of a negative ion/bamboo-based activated carbon composite material, and 3-5 parts of a compatilizer. The method includes: (1) putting the raw materials into a material storage mechanism respectively to remove metals by high strong magnetism; (2) conveying the raw materials into a material cylinder to conduct complete stirring for 30-45min to an even state; and (3) subjecting the well mixed raw materials to secondary metal removal by strong magnetism, then conveying the treated raw materials to the feed hopper of a tape casting extruder, conducting constant speed feeding to a screw machine by a metering feed mechanism according to a preset quantity, carrying out 130-150DEG C high temperature melt mixing evenly by the screw machine to perform tape casting into a sheet, and then conducting cold pressing shaping. The healthy type low temperature hot melt adhesive provided by the invention contains organic bentonite, can significantly improve the quality homogeneity and breathability homogeneity of low temperature hot melt adhesive, and has greatly improved breathability and high quality.

The invention provides a manufacturing method of hydrophilic polyester short fibers for directly spinning a spun-laced non-woven fabric. The manufacturing method comprises the following steps: carrying out esterification on polyester slurry, carrying out pre-condensation polymerization, carrying out final condensation polymerization, spinning and carrying out after-finishing. In a pre-condensation polymerization process, comonomer polyethylene glycol PEG is added, the molecular weight of the added PEG is 1500-2000, and the adding amount is 0.5wt%-1.0wt% of a polyester melt. The temperature of the melt obtained by the final condensation polymerization is controlled to be lower than 290 DEG C, so that the quantity of generated annular tripolymers is reduced and the spun-laced processing efficiency of the fibers is improved. A hydrophilic modifier is added in an online polyester synthetic process and the polyester melt is directly used for spinning; the production cost is lower compared with the production cost of chip spinning, the quality uniformity of the short fibers is improved by 50% and the hydrophilic effect is obvious; eight paths of surface treatment are carried out, so that the distribution of a fiber surface finishing agent is uniform and the attaching firmness is improved; the fiber surface hydrophilic effect is improved in a spun-laced processing process; and the polyester PET short fibers can be used for completely replacing mucilage glue short fibers to be used as production raw materials of the non-woven fabric, so that the whole cost of the non-woven fabric is reduced.

A packaging method of white LED by rotating glue and lithography process mainly comprises a monochromatic LED chip, a lead wire, a phosphor glue layer and a chip substrate. The invention is characterized in that the phosphor glue layer is fabricated by the rotating glue process for forming the phosphor glue layer on the surface of the chip substrate, then the packaging of white LED is completed by lithography, developing, solidification and cutting processes. The invention has the advantages that the packaging method of LED by the rotating glue and lithography process can accurately control the thickness of the phosphor glue layer on the chip surface, promote the light quality and uniformity of luminescence from white LED after packaging, and promote the production efficiency of packaging.

The invention relates to a technology forming method of a small and medium-sized unmanned aerial vehicle composite material outer wing. The method comprises the following steps of forming mold manufacturing, front edge silicon rubber core mold manufacturing, film bag body manufacturing, outer wing front edge manufacturing, and outer wing main body manufacturing; after surface treatment is correspondingly carried out on bonding areas corresponding to the outer wing front edge and a main body front beam surface, and structure double-sided adhesive tapes with the same shape as that of the bondingareas are tore to remove isolation paper on one sides, the adhesive surfaces are adhered to the bonding areas of the outer wing front edge, then solating films on the other sides of the structural adhesive tapes are tore, and the outer wing front edge is horizontally embedded into a boss of the corresponding position of the outer wing main body through a positioning groove at the left end of theouter wing front edge so as to obtain a composite material integral structure outer wing product. According to the technology forming method, the problem of limitation of multiple curing forming, andthe uniformity of the product quality and the thickness are improved.

The invention discloses Ho:Cr:Er:Tm:YAG-doped laser crystals and a preparation method thereof. The chemical composition of the laser crystal is Ho[a]Tm[b]Er[c]Y[3-a-b-c]Cr[d]Al[5-d]O[12], wherein a is more than 0.003, and less than or equal to 0.018; b is more than or equal to 0.06, and less than or equal to 0.30, c is more than 0, and less than or equal to 1.5; and d is more than 0, and less than or equal to 0.25. The method for preparing the Ho:Cr:Er:Tm:YAG-doped laser crystals comprises the following steps: (1) placing desiccant in a crystal growth furnace to absorb moisture in an atmosphere in the furnace; (2) vacuumizing the crystal growth furnace and performing continuous baking for 8 to 12 hours at a temperature of between 200 and 500 DEG C when the pressure in the furnace is not greater than 5*10 Pa so as to remove the moisture in the furnace; (3) filling the furnace with argon gas or nitrogen of which the water content is not higher than 1.5 ppm; and (4) treating Ho:Cr:Er:Tm:YAG-doped crystals grown in an inert atmosphere in a muffle furnace for 15 to 20 hours at a high temperature of 1,300 DEG C. The preparation method can further improve the rate of Ho-doped crystals in absorbing and utilizing flashlamp pumped energy, and has the advantages of improving the optical quality and optical homogeneity of the crystals, reducing the thermal effect of pumping, reducing laser loss, reducing pumping threshold and improving laser efficiency.

Disclosed are a semiconductor structure and a formation method thereof. The formation method comprises the steps of forming a base, wherein the base comprises a substrate, a gate structure positionedon the substrate, source and drain doped regions positioned in the base on the two sides of the gate structure, and an interlayer dielectric layer positioned on the base and for covering the top of the gate structure; forming a first contact opening for exposing the source and drain doped regions in the interlayer dielectric layer on the two sides of the gate structure; performing pre-amorphization processing on the source and drain doped regions exposed from the first contact opening to form an amorphous layer; performing re-crystallization processing on a part of the amorphous layer close tothe source and drain doped regions; forming a metal silicide layer at the bottom of the first contact opening; and forming a first contact hole inserting plug in the first contact opening. Through re-crystallization processing, the defect at the end of range which is subjected to pre-amorphization processing is repaired, so that the quality of the metal silicide layer and quality consistency areimproved; and in addition, the problem of conduction between the source and drain doped regions and a bulk region can be avoided, and bulk leakage can be lowered.

The invention discloses a method for rapidly extracting latex. A rapid latex extraction device is composed of a positive and negative plate, a cleaning device and a drying device. A positive electrodeis composed of a conveying device with a surface where a conducting material is attached, and a negative electrode is composed of a conductive electrode plate. The latex is led into the rapid latex extraction device from a latex inlet, the distance of the positive and negative plate is adjusted to make the positive electrode and the negative electrode contact with the latex, a direct current voltage is adjusted, a thin film rubber piece is gathered on the conveying device serving as the positive electrode and is conveyed through the conveying device to the cleaning device to be cleaned, and the thin film rubber piece is dried and packaged to obtain a finished rubber. The method is simple in process, the obtained rubber performance is excellent, rubber ingredients are reserved completely,no flocculation process occurs, and the method is green and environmentally friendly and reduces cost. Man-made influence factors of the process are fewer, continuous production can be achieved, the product quality is stable, and industrialized research is easy.