59results about How to "Improve and stabilize quality" patented technology

An optoelectronic component and an optical sub-assembly for optical communication. The optoelectronic component has a housing and one end formed with an opening. An optoelectronic device is located in the housing and faces the opening. A barrel is combined with the optoelectronic component to form the optical sub-assembly, and the barrel has a lens configuration facing the opening. The lens can enter the housing through the opening to approach the optoelectronic device. Thus, the manufacturing costs of the optoelectronic component and the optical sub-assembly can be lowered, and the optical coupling efficiency of the optical sub-assembly can be enhanced. In addition, a film covers the surface of the optoelectronic device to improve the device reliability.

The invention relates to a preparation process for extracting crude sodium heparin from pig lungs, which comprises the following steps: mincing fresh pig lungs into slurry, carrying out heat insulation and enzymolysis to obtain an enzymolysis liquid, filtering the enzymolysis liquid to collect filtrate, carrying out ion exchange adsorption treatment on the filtrate, washing and eluting resin, precipitating sodium heparin, and drying to obtain crude sodium heparin. The enzymolysis method employed by the invention can thoroughly dissolve pig lung slurry and effectively improve and stabilize the quality of the product and the yield of sodium heparin; and simultaneously, the obtained crude sodium heparin has low impurity content and high titer.

The invention discloses an automatic control method for coal airflow classification and moisture control technology and belongs to the coking industry coal pretreatment automatic control field. The invention integrates frequency conversion technology, network technology, computer technology and control technology into a whole, ensures the movement and fluidization effect of the raw material coal, can control the fluidization time and the dry classification effect, and realizes that three functions-drying, classification and preheating of the mixed coal for coking are integrated into a whole. The technology realizes full-automatic operation of the whole process system flow by flexible and perfect control, and is applied to the control of the coal pretreatment system in the coking industry.

A tobacco sheet is prepared by papermaking method. The method comprises soaking to extract tobacco stem and tobacco powder, and filtering to obtain extractive solution and residue; subjecting the residue to pulping, sheet-making, squeezing and drying to obtain sheet base; and coating the extractive solution on the sheet base. The invention studies influence of different stem/powder pulp ratios on tobacco sheet quality, comprehensively analyzes single action and mutual complex influence relationship of these factors, precisely determines suitable stem/powder pulp ratio, effectively improves physical properties, chemical composition, tensile index, tearing index, bulkiness, density, air permeability, filling value, wettability and permeability of tobacco sheet base, and provides powerful technical support for further improving and stabilizing tobacco sheet quality.

A sub-frame radial bogie comprises wheelsets, a side frame, a swing bolster, a wheelset radial device and a brake gear. Bearing adapters (41) forming the wheelset radial device are fixedly connected with the sub-frame (42) via pulling rivets (11), and each group of the bearing adapters (41) is bilaterally symmetrical in structure with a symmetry plane (A). The sub-frame (42) comprises an arm (51) and an end (52); a sub-frame connection hole (61) is arranged on the end (52); transverse positioning bosses (73) are arranged on the bearing adapters (41); and an arc groove (75) and symmetrical sub-frame connection holes (71) are arranged on a connection base (72). The bearing adapters use the same standard structure, hence, the more precise design and machining can be realized, and the cost is reduced, and meanwhile, the maintenance technique of the sub-frame is improved, and the maintenance cost is reduced.

The invention relates to the technical field of regenerated bricks, and discloses a construction waste regenerated brick which comprises the following raw materials in parts by weight: 30-45 parts of cement, 65-80 parts of fine aggregate, 55-70 parts of recycled brick coarse aggregate, 1-5 parts of polypropylene fibers, 10-20 parts of kaolin, 30-50 parts of fly ash, 1-5 parts of a water reducing agent, 1-5 parts of an early strength agent, 1-5 parts of an anti-freezing agent and 15-25 parts of water. The invention further relates to a preparation method of the construction waste regenerated brick, which comprises the steps of 1) preparing cement, fine aggregate, regenerated brick coarse aggregate, polypropylene fibers, kaolin, fly ash, a water reducing agent, an early strength agent, an anti-freezing agent and water, pre-wetting a barrel of a stirrer, then putting the regenerated brick coarse aggregate, the cement and the fine aggregate into the stirrer, pre-stirring for 2-3 minutes, uniformly stirring to obtain a mixture for later use, uniformly dispersing the polypropylene fibers into the obtained mixture, and carrying out dry mixing for 1-2 minutes to obtain mixed powder. According to the construction waste regenerated brick and the preparation method thereof, the purpose of higher strength is achieved.

The invention discloses a quality stabilization technique of antitumor protein medicines, which comprises the following steps: (1) expressing target proteins with colibacillus, and preparing the target proteins by fermentation; (2) crushing the colibacillus engineering bacteria, and recycling the inclusion body; (3) washing the inclusion body, and recycling the target proteins; (4) purifying the target proteins by strong cation column sepharose Fast Flow chromatography; (5) purifying by weak anion column DEAE (diethylaminoethanol) sepharose chromatography, and recycling the target proteins; (6) stably storing the target proteins; and (7) preparing the target protein freeze-dried powder injection by a freeze-drying technique. The target proteins are a type of antitumor-activity survivin mutant proteins supported by TAT (transactivator of transcription) and mutants thereof. The invention simultaneously gives attention to yield, biological activity and stability, and well implements the overall control technique of stable quality of a type of antitumor protein medicines.

The present invention relates to Leuconostoc citreum CJGN34 KCTC 10974BP lactic acid bacteria, fermented foods including kimchi manufactured using the lactic acid bacteria as a starter, and lactic acid bacteria composition comprising of the lactic acid bacteria. The novel Leuconostoc citreum CJGN34 of the present invention enhances the general taste quality of kimchi; increases the intrinsic complex sour taste and carbonated taste of kimchi manufactured by traditional manufacturing method in wintertime; and regularly sustains the fermentation quality during the year; particularly, has an effect for controlling the deterioration of fermentation quality in the summer in which the taste quality deteriorates. Thus, the lactic acid bacteria of the present invention can be used as a starter in fermented foods including kimchi, or as a drug medicine in the form of a tablet or capsule mixed with carriers or additives, or a s probiotics for foods; or applied in cosmetic ingredients by mixing in a certain amount. Therefore, the lactic acid bacteria of the present invention can be used in a manner commonly applied in various fields of technology such as medicine, food, feed, cosmetics or the like.

The invention relates to a processing method of sweet and mellow black tea. The processing method comprises the following steps: (1) selecting fresh leaves of a tea tree variety suitable for preparingmedium and small leaflets of black tea as raw materials; (2) from the last ten-day period of March to the first ten-day period of May, picking fresh leaves of tea tree varieties of medium and small leaf varieties; (3) carrying out variable-temperature, variable-light and variable-wind withering treatment; (4) carrying out rocking greening treatment; (5) carrying out secondary withering; (6) carrying out ultrasonic crushing to promote crushing of leaf cell membranes and vacuolar membranes and promote full biochemical reaction of enzymes in leaves and substrates; (7) performing variable-frequency short-time cold rolling; (8) carrying out low-temperature medium-humidity dynamic fermentation; (9) carrying out primary drying operation of roller-hot air coupling roller drying; (10) conveying the primarily dried leaves treated in the step (9) to a spreading and cooling room by using a conveying belt, and removing broken leaves and yellow leaves by using a winnowing machine; (11) carrying outlow-temperature long-time hot air sufficient drying operation; and (12) carrying out temperature-controlled humidity-controlled far-infrared fragrance extraction treatment on the tea sample obtainedin the step (11), so as to obtain the sweet and mellow black tea.

The invention discloses an electric heating two-stage polygonatum odoratum drying machine and an application method thereof. The electric heating two-stage polygonatum odoratum drying machine comprises a power supply, a control device connected with the power supply, a heat supplying device connected with the control device and a drying device connected with the heat supplying device, wherein the drying device comprises a heat exchange chamber, a drying chamber arranged above the heat exchange chamber, a secondary drying chamber connected with the drying chamber through a heat conducting channel and a conveyor belt arranged in the drying chamber; a separating plate is arranged between the heat exchange chamber and the drying chamber, air holes are formed in the separating plate, the drying chamber is communicated with outside through the air holes, and the conveyor belt is connected with a feeding hole and a discharging hole. The electric heating two-stage polygonatum odoratum drying machine has the advantages that heat energy provided by a heating unit is fully utilized, and polygonatum odoratum is subjected to two-stage drying; meanwhile, intelligent control equipment is adopted, so that quality of the dried polygonatum odoratum is improved and stabilized, and labour intensity of an operator is reduced.

The invention relates to a method for establishing a fingerprint of Ferula sinkiangensis K. M. Shen polysaccharide by utilizing HPLC-MS. The method for establishing the fingerprint of Ferula sinkiangensis polysaccharide by utilizing an HPLC-MS technology is used by combining the separation function of a chromatography and the qualitative determination function of a mass spectrum, thereby greatly improving accuracy and sensitivity of quality detection. Meanwhile, the method provided by the invention establishes the quantitative fingerprint of water-soluble Ferula sinkiangensis polysaccharide for the first time, can utilize the mass spectrum for accurate qualitative determination of a common peak, can accurately calculate the peak area of peaks through extraction of an ion chromatogram for qualitative determination, and is more effective to establish the fingerprint from two levels. The method provided by the invention has high sensitivity and strong specificity, and can be used as one of the important means for identification and quality evaluation of a Ferula sinkiangensis medicinal material.

The invention discloses a method for prolonging the quality stability of a hydrocracking product. The method comprises the following steps that hydrocracking raw materials and hydrogen gas are mixed to enter a hydrocracking pretreatment reactor for refining reaction; reaction effluents enter a hydrocracking reactor for hydrocracking reaction; four hydrocracking catalyst bed layers are arranged inthe hydrocracking reactor; when the conversion rate of fractions higher than 350 DEG C in hydrocracking raw materials is 90 to 99 percent, a hydrogenation posttreatment catalyst bed layer is arrangedat each of the top and the bottom of any one hydrocracking catalyst bed layer; the volume ratio of posttreatment catalysts filled along the material flow direction is (3 to 7):(5 to 15):(5 to 25):(20to 40):(30 to 50); the volume ratio of the hydrogenation posttreatment catalysts in the hydrocracking reactor to hydrocracking catalysts filled in the hydrocracking reactor is 1:(6 to 8); after hydrocracking products are separated, various products are obtained. By the method, the stability of the hydrocracking products can be obviously improved.

The invention discloses a novel processing technology of Dezhou braised chicken, and belongs to the technical field of meat processing. The processing technology comprises the following steps: raw material treatment, rolling, pickling, shaping, honey sprinkling, frying, packaging and sterilization. In the step of rolling, spice bittern comprises the following components: star anise, cassia bark, galanga resurrectionlily rhizomes, dahurian angelica roots, common fennel fruits, myrcia, clove, dried orange peel, round cardamom seeds and Chinese prickly ash. According to the invention, a rolling process is combined with the spice brine to replace traditional marinating processes. Meanwhile, a traditional processing method that curing is conducted before sterilization is changed into a processthat packaging is conducted before high-temperature sterilization and curing. The application of the method can utilize the spice bittern to the maximum extent, and raise a product yield and raise andstabilize product quality.

The invention discloses a production method of an antioxidant enzyme, and belongs to the field of food engineering; first, vitamin C is added into drinking water, the drinking water and raw material vegetables and fruits are poured together into a crusher and crushed into fruit paste, then the fruit paste is placed in a sealing device for fermentation, and in the fermentation process, the vitamin C is added again; after the fermentation is completed and before fermentation broth and fermentation residue are filtered, the vitamin C is added first to prevent the problem of oxidation caused by extensive contact of the fermentation broth and air; then the fermentation broth and the fermentation residue are filtered, and a semi-finished product enzyme is obtained by elimination of the fermentation residue, when pH of the semi-finished product enzyme is regulated to 4.5-5.5, the vitamin C is added again; and finally regulation of the pH of the semi-finished product enzyme is completed to obtain the finished product enzyme, and the finished product enzyme is packed and stored. In the process of enzyme production, in various stages of the raw materials, the semi-finished product and the finished product, the vitamin C with anti-oxidation function are supplemented, and the product quality and the long-term storage quality stability are effectively improved.

The invention discloses a pulling-method crystal growing furnace capable of effectively preventing furnace inside pollution. The crystal growing furnace comprises a furnace rack and a furnace body, wherein a temperature measuring device is arranged on the furnace body, a furnace body seat is arranged at the bottom of the furnace body in a sealed manner and is fixedly arranged on the furnace rack, a melting pot supporting rod is arranged on the furnace body seat, and a melting pot is arranged on the melting pot supporting rod; a furnace body cover is arranged at the top of the furnace body in a sealed manner, a crystal pulling rod which is opposite to the melting pot supporting rod and is coaxial with the melting pot supporting rod is arranged on the furnace body cover, and a seed crystal clamping device is arranged at the lower end of the crystal pulling rod; a heating furnace jacket is arranged outside the furnace body corresponding to a melting pot area, a heat-preserving sleeve is arranged above the heating furnace jacket, and a heat-insulated sleeve is arranged outside the heat-preserving sleeve. According to the pulling-method crystal growing furnace, through outwards shifting heating and temperature control components and a water-cooled furnace body component, the problem of furnace inside pollution caused by the generation of volatiles in the furnace body at high temperatures is greatly reduced, the improvement and control on crystal growing working condition environments in the furnace are facilitated, and the quality of crystals is improved and stabilized.

The invention discloses a construction method of a cordyceps militaris polysaccharide multi-dimensional fingerprint spectrum, which relates to the technical field of fingerprint spectrums of traditional Chinese medicine and functional food materials as well as products of the traditional Chinese medicine and the functional food materials. The construction method comprises the steps of extracting cordyceps militaris polysaccharide from cordyceps militaris and performing ultraviolet absorption spectrum fingerprint analysis, Fourier transform infrared spectroscopy fingerprint analysis and high performance gel permeation chromatography fingerprint analysis on the extracted cordyceps militaris polysaccharide so as to obtain a multi-dimensional fingerprint spectrum of the cordyceps militaris polysaccharide including an UV standard fingerprint spectrum, an IR standard fingerprint spectrum and HPGPC standard fingerprint spectrum. The method has the advantages of simplicity, stability and sensitivity in operation, high precision, good reproducibility and the like, the quality of the cordyceps militaris polysaccharide can be controlled from the integral feature of the chromatography, and a new scientific method is provided for the quality control and true and false identification of the cordyceps militaris.

The invention discloses a special composite fertilizer with comprehensive nutrients for lotus. The special composite fertilizer is prepared from the following raw materials in parts by weight: 100 to120 parts of a large amount of element fertilizer, 32 to 45 parts of fermented soybean meal, 10 to 18 parts of decomposed pig manure, 20 to 30 parts of peanut shell powder, 4 to 12 parts of EM (effective microorganism) bacterial agent, 0.1 to 0.4 part of naprosyl sodium, 1 to 3 parts of collagen complex, 0.1 to 0.4 part of microcrystalline cellulose, 2 to 4 parts of zeolite powder, and 2 to 6 parts of trace element additive. The collagen complex is prepared by the following technology with steps of stirring kaolin, a silane coupling agent and anhydrous ethanol, adjusting the pH (potential of hydrogen) value of the system to 5.2 to 5.8, heating and stirring, filtering, washing by the anhydrous ethanol, drying, adding bovine collagen, continuing to stir, removing the anhydrous ethanol, adding sodium carboxymethyl cellulose and acetic acid solution, stirring, and freeze-drying, so as to obtain the collagen complex.