42results about How to "Considerable economy" patented technology

The invention relates to a method for preparing thrombin-chitosan self-assembly nano particles and application thereof. The method comprises: adding chitosan into an acetic acid aqueous solution to form a chitosan solution; adding thrombin into a buffer solution to form a thrombin solution; uniformly mixing the thrombin solution and the chitosan solution, adding a crosslinking agent for stirring, pouring the mixture into liquid paraffin for stirring, adding a dispersant, and performing emulsification; and adding the crosslinking agent for crosslinking reaction through water bath, performing filtration and acetone washing, using ethanol for washing and dehydration, and finally performing vacuum drying to obtain the thrombin-chitosan self-assembly nano particles. The method feeds the thrombin and the chitosan according to proportion to prepare thrombin-chitosan which is self-assembled into nano particles for the first time, maintains the stability of the thrombin of the thrombin-chitosan self-assembly nano particles, and gives better play to the comprehensive hemostatic effect of the thrombin and the chitosan of the thrombin-chitosan self-assembly nano particles. The method can be widely applied to tissue hemostasis, tissue sealing and tissue adhesion in the surgical fields such as general surgery, orthopaedics, heat and chest surgery, neurosurgery and gynaecology and obstetrics.

The invention relates to a method for preparing granular active carbon by using biomass, wherein the granular active carbon is prepared by using biomass as a raw material through hydrothermal carbonization, molding and activation, the biomass comprises corn straw, wheat straw, soybean straw, cotton straw, tobacco straw, rice straw, sawdust, Salix psammophila, water hyacinth or pine branch biomass,and the activator can be zinc chloride, sulfuric acid, phosphoric acid, potassium carbonate, potassium hydroxide and ferric chloride. According to the present invention, corn straw and sawdust are used as the raw materials, and can generate the hydrothermal carbon with strong bonding effect and the hydrothermal liquid with high added value through hydrothermal carbonization, the hydrothermal carbon has a certain bonding effect, and the specific surface area and the pore volume of large-particle active carbon are increased with zinc chloride and ferric chloride, such that the granular active carbon integrating good compressive strength and high adsorption performance is obtained so as to improve the application value.

The invention relates to a claw pole generator comprising a claw pole rotor, two magnet wheel halves (21, 23) which are mounted on a drive shaft (15) and are provided with claw-shaped magnet poles (22, 24) that mesh with each other, and an annular closing member (10) located between adjacent magnet poles (21, 23). The magnet wheel halves (21, 23) can be inserted into pockets (11) of the closing member (10) along with the magnet poles (22, 24) thereof such that the closing member (10) overlaps the magnet poles (22, 24) on the edge in at least some areas. Also disclosed is a closing member (10).

The invention relates to a vacuum isothermal heat treatment process of a large die-casting mould, which is characterized by comprising the steps of: inserting thermocouples into the core and the surface layer of a mould, raising the temperature of a furnace to 550-625 DEG C at the speed of 150-200 DEG C per hour firstly, then raising the temperature of the furnace to 825-875 DEG C at the speed of 100-150 DEG C per hour, raising the temperature of the furnace (Tf) to reach an austenization sate within 20 minutes and preserving the temperature for 30 minutes; quickly cooling under cooling pressure not lower than 9Bar, decreasing the cooling pressure to 2Bar when the temperature of the surface of the mould (Ts) is decreased to 427 DEG C, stopping the rotation of a cooling fan and turning on a convection fan; and filling nitrogen pressure to be above 6Bar after isothermy, turning off the convection fan and restarting the cooling fan to rotate so as to realize quick cooling. Therefore, the invention can achieve the most ideal structure property and the minimum deformation, can guarantee the service life of the large die-casting mould, and has scientific and reasonable process, obvious technological advance and considerable economic values and market prospect.

The invention discloses a method for improving sandy soil. A straw modified material is added into soil and is fully mixed with surfaced soil; when a ratio of sand with granularity of more than 0.02mm in the soil is over 85 percent, the adding amount of the straw modified material is 1,400 to 1,750kg/mu; when a ratio of sand with granularity of more than 0.02mm in the soil is between 55 and 85 percent, the adding amount of the straw modified material is 750 to 1,000kg/mu; when a ratio of sand with granularity of more than 0.02mm in the soil is below 55 percent, the adding amount of the straw modified material is 300 to 500kg/mu; and the straw modified material is prepared by uniformly mixing rotted and decomposed crop straw, calcium bentonite and anion polyacrylamide. The method has the advantages of no secondary pollution, low cost and no soil hardening; the straw modified material has the characteristics of a soil modifier and an organic fertilizer; and sand soil or tilled land is not needed to be reconstructed, and final-period management is avoided.

The invention discloses a method for positioning and synthesizing terpenoids by means of the Yarrowia lipolytica way. The method comprises the steps that an acetoacetyl coenzyme A thiolase, HMG-CoA synthetase and HMG-CoA reductase in the synthetic route of mevalonic acid in Yarrowia lipolytica are over-expressed and positioned to the peroxisome, and engineering bacteria MP1 are obtained; on the basis of the engineering bacteria MP1, the alpha-farnesene synthesis way is expressed, and engineering bacteria FP1 are obtained; or, the beta-carotene synthesis way is expressed, and engineering bacteria CP1 are obtained; or, the linalool synthesis way is expressed, engineering bacteria LP1 are obtained; the bacteria FP1 or CP1 or LP1 can synthesize the terpenoids under the aerobatic condition by means of a culture medium containing fatty acid or grease, and the yield of the synthesized terpenoids is higher compared with a traditional method. According to the method, fatty acid, grease and cheap food waste oil can be used for generating mevalonic acid downstream terpenoids, and the considerable application prospect and the economic value are achieved.

The invention relates to a sandy soil conditioner and concretely relates to a sandy soil conditioner prepared from composite bacterium system solid state fermented straws and municipal sludge. A preparation method of the sandy soil conditioner comprises a, straw pretreatment, b, single bacterial strain seed liquid preparation, c, composite microbial agent preparation, d, composite flora solid state fermentation, e, straw-sludge mixture preparation and f, mixture composting. The sandy soil conditioner has a low cost, does not produce secondary pollution, has considerable economic and environmental benefits, can improve a soil structure and a water absorption and storage capability, solves the problem of difficulty of municipal sludge treatment, prevents straw burning-caused environmental pollution and changes wastes into valuables.

The invention provides a hardness detection method in the ore crushing process, and belongs to the field of crushing technology in ore production. A fuzzy neural network is constructed to describe current and power of a crusher as well as the relation between thickness wearing of a liner plate and the ore hardness, the ore hardness is detected via real-time data, ore hardness information is provided for onsite production, disadvantages in adjusting technical parameters according to experience by workers are overcome, production of high efficiency and quality is realized, and the method has high economical and practical values; and the method can be popularized to product design in other industries.

A method for preparing spherical aluminum oxynitride powder, comprising the steps of (A) providing an alumina powder and a resin, both of which are then dispersed and dissolved in a solvent to form a mixed slurry; (B) subjecting the mixed slurry to spray drying to form a spherical powder; (C) subjecting the spherical powder to a carbonization treatment under an inert atmosphere to form a carbonized spherical powder; (D) subjecting the carbonized spherical powder to carbothermic reduction in a nitrogen-containing atmosphere at a temperature of 1450° C. to 1550° C.; (E) keeping the spherical powder that has been subjected to carbothermic reduction in the nitrogen-containing atmosphere to carry out a nitridation reaction at a temperature of 1700° C. to 1730° C., forming a nitrided spherical aluminum oxynitride powder; (F) subjecting the nitrided spherical aluminum oxynitride powder to decarbonization in an oxygen-containing atmosphere to form the spherical aluminum oxynitride powder.

The invention discloses a liver nourishing and lipid regulation moringa oleifera preparation, which is mainly prepared from the following raw materials in parts by weight: 1 to 40 parts of moringa oleifera leaves, 1 to 30 parts of radix puerariae, 1 to 20 parts of dandelion, 1 to 20 parts of cassia seeds, 1 to 20 parts of lotus leaves, 1 to 20 parts of mulberry leaves and 1 to 20 parts of fruit of Chinese wolfberry. The invention also provides a preparation method of the liver nourishing and lipid regulation moringa oleifera preparation and application of the liver nourishing and lipid regulation moringa oleifera preparation. The liver nourishing and lipid regulation moringa oleifera preparation can be used for preventing and treating fatty liver, three hypers, atherosclerosis and hepatitis, and can also be used for relieving drunkenness, refreshing spirit and reducing the weight. The liver nourishing and lipid regulation moringa oleifera preparation has the advantages that the raw material sources are wide; the efficacies are many; no adverse reaction and toxic and side effects exist, and the like. The application prospects are wide; economic and social benefits and prospects are considerable.

The invention discloses an automatic control method for achieving optimal initial-pressure operation of heat-supply units. By modifying a coordinated control system, the method achieves optimal initial-pressure automatic control operation of heat-supply units under all operating conditions; according to the automatic control method, by real-time back pressures and real-time heat supplying, power variations corresponding to a standard operating condition are calculated and then subjected to addition operation with load commands, and after that, the operated power variations are used as new load commands of optimal initial-pressure functions, and initial-pressure values corresponding to the new load commands are calculated and output again. The method can achieve optimal initial-pressure automatic control operation of heat-supply units under all operating conditions. At the external conditions of spontaneous environment-temperature variations and requirement changes of heat consumers, the method can ensure that the units maintain operating around economic efficiency points. Because only the testing cost of field performance is involved, the method is low in investment cost, brings extremely considerable economic and environmental protection benefits to heat supply, industrial heat supply and units with both heat supply and industrial heat supply, and has a wide popularization effect.

The invention relates to a digital phase compensation receiving system for increasing improvement factors of magnetron radars. The system comprises a sensitive time control system, a low noise amplifier, a power divider, a mixer, a voltage-controlled oscillator, filter amplifiers, an analog-digital converter 8, an intermediate frequency (IF) processor, a coherent processor, fiber interfaces, a BURST (sample) processor and reconstructor, a digital-analog converter, an analog-digital converter 14, a sequence circuit 1.6193M crystal oscillator and an emitting reference. The system overcomes the defect that the emitted improvement factors are slightly increased in the prior art and increases the improvement factors of the emission systems of the magnetron radars by more than 10dB. The radio frequency receiving and digital IF receiving parts of the system adopt the integration and universal modularization technologies. The system ensures that the magnetron radars can not only discover and track the big targets such as ships, warships and the like but also discover and track the quick small targets such as airplanes and the like, and has excellent economic and military benefits.

A straw holder for supporting a drinking straw in the mouth of a can having a pull tab and made of a flexible sheet material includes a straw support portion dimensioned for placement above the mouth of a can and comprising an aperture designed to receive a straw therethrough and to vertically support the straw with respect to the support portion and a retaining portion proximate the straw support portion comprising a first edge engageable with the pull tab of the can for retaining the straw holder in an installed position on the can. The straw support portion is attached to the retaining portion by at least one connection.

The invention provides a soil improver of wheat planting land and a preparation method of the soil improver. The soil improver is prepared from the following components: pond sludge, plant ash, efficient straw powder, calcium carbonate, bamboo charcoal powder, lignin, viscous solution, a water retention agent, compound nutrition salt, compound microbial solution and water. The soil improver prepared by the invention has the characteristics of low cost and no pollution, has remarkable economic and environmental benefit, can effectively improve the soil structure, can improve the water absorption and water storage capability of the soil, can loosen the soil, can improve the porosity, and can prevent the desertification; and the nutrients can prevent the hardening of the soil, and the pond sludge and the efficient straw powder in the component can solve the problem of difficulty in treating the sewage and the environmental pollution problem, but also can supply certain nutrition to the growth of wheat.

This invention describes a process for the production of ANHYDROUS active pharmaceutical ingredients (APIs); a process for the preparation of HYDRATED active pharmaceutical ingredients, a process for the preparation of sterile and stable injectable solutions, and their use, more specifically, APIs which are taxane derivatives, especially (2R,3S) 4-acetoxy-2-α-benzoyloxy-5β-20-epoxy-1,7-β-10-β-tri-hydroxy-9-oxo-tax-11-en-13α-il 3-tert-butoxycarbonylamino-2-hydroxy-3-phenylpropionate (I); 4-acetoxy-2-α-benzoyloxy-5-β-20-epoxy-1, 7β-10-β-tri-hidroxy-9-oxo-tax-11-en-13α-il (2R,3S) 3-benzoylamino-2-hydroxy-3-phenylpropionate (II), and particularly 4-acetoxy-2-α-benzoyloxy-5β-20-epoxy-1,7-β-10-β-tri-hidroxy-9-oxo-tax-11-en-13α-il (2R,3S) 3-tert-butoxycarbonylamino-2-hydroxy-3-phenylpropionate tri-hydrate (III).

The invention discloses a building external wall heat insulation structural system and a safety degree evaluation method thereof. The building external wall heat insulation structural system and the safety degree evaluation method thereof aim to solve the problems that concentrated thermal bridge is generated because of a connecting piece, and the life of the building wall body is short. The structure of the building external wall heat insulation structural system comprises a concrete pavement, a load-bearing structural wall, a heat insulation layer, a positioning cushion block and a connecting component. The connecting component comprises a steel wire mesh sheet and a connecting piece fixed to the steel wire mesh sheet, the connecting piece penetrates through the heat insulation layer and is fixed to the structural wall and the concrete pavement, and the positioning cushion block is used for fixing the heat insulation layer and the steel wire mesh sheet to form a steel wire mesh frame plate. According to the building external wall heat insulation structural system and the safety degree evaluation method thereof, the method for evaluating the safety degree of the building external wall heat insulation system for the first time is provided, a heat insulation wall face with the appropriate thickness is selected to be put into use according to a result calculated through the method, and moisture condensation caused by concentrated thermal bridge of the connecting piece can be effectively overcome.

A rolling bearing is provided that includes an outer ring, an inner ring, and a plurality of rollers disposed between the outer and inner rings to engage a radially outer lateral surface of the inner ring and a radially inner lateral surface of the outer ring and being laterally held, in a direction parallel to a relative rotation axis (A) between the rings, by respective axial shoulders. The axial shoulders each consist of an annular element made of synthetic plastic material as an independent element from the rings that engages in a snapping manner either the inner ring or the outer ring; the inner and outer rings being provided, at their respective radially outer and inner lateral surfaces and at opposite axial ends thereof, with snapping locking seats for the annular elements made of synthetic plastic material each including a continuous annular groove.

The invention provides a phase change heat storage type solar instant-heating heat pump system, which is characterized by being used for providing stable hot water for a user, and comprising an electrical heating unit, a heat storing and heating unit, a solar heating unit, a heat pump heating unit, a signal measuring unit, a protecting unit, and a control unit. The electrical heating unit comprises a water tank for storing water, a safety valve arranged on the top part of the water tank, an electrical heater arranged in the water tank, an electromagnetic valve arranged on a water inlet pipeline of the water tank, and a current equalizer arranged on a water inlet in the water tank; the heat storing and heating unit comprises multiple heat storing material layers; the solar heating unit comprises a solar heat collector; the heat pump heating unit comprises a compressor, a condenser, a dry filter, a throttling part and an evaporator connected sequentially; the signal measuring unit comprises multiple temperature sensors distributed on a wall of the water tank along an extending direction of the water tank, a water level meter arranged in parallel to the water tank, and pressure sensors arranged on two ends of the compressor; and the protecting unit sends out an alarm or carries out protection operation according to a detection result of the signal measuring unit.

The invention discloses a flame tube repair method. Welding repair of a combustion-supporting hole guide sleeve in a component status is realized by an argon arc welding type welding repair process of a welding head. The welding method specifically comprises the following steps: polishing and cleaning before welding; washing and drying; welding by an argon arc welding process; manually welding a welding position of a gas feeding funnel by the argon arc welding process on an argon arc welding machine; inspecting after welding; testing for checking; inspecting and testing an engine by rule, wherein the performance of the engine is qualified. The method has the advantages as follows: the combustion-supporting hole guide sleeve at the head of a flame tube is subjected to integrated welding repair, so that the head of the flame tube is prevented from being scrapped, a new flame tube does not need to be replaced, the replacement cost of the new flame tube is reduced, and a new direction is provided for repairing the flame tube while considerable economic and social benefits are created.

The invention relates to a wheel suspension having a shock absorber (1) with a piston rod (2) and a spring element (7), the spring element (7) being mounted between a lower spring retaining plate (4) and an upper spring retaining plate (6) and the head of the shock absorber (1) being fastened to a vehicle body (8). An intermediate element system (9, 11, 12; 9, 26) is arranged and embodied between the upper spring retaining plate (6) and the vehicle body (8) in such a manner that a compensating moment (23) is generated during final installation of the shock absorber (1) on the vehicle body (8).

The invention discloses a technological method for improving the strength of preheated pellets in a grate-rotary kiln. In iron concentrates, the content of the iron concentrates with the grain size being -200 meshes is 80% or above, and the iron concentrates with the grain size being -325 meshes is 60%-80%; the specific surface area of the iron concentrates reaches 1500-1900 cm<2>/g or above; thegrain composition of raw materials stabilizes at no more than 0.074 mm, and the fluctuation range is no more than +/-1.5%; and the moisture content of crude pellet is 7.5%-8.0%. The grate-rotary kilnhas the technological parameters that the drying second-stage temperature is 355-365 DEG C; the preheating first-stage temperature is 570-580 DEG C; the preheating second-stage temperature is 990-1010DEG C; and the machine speed is 1.5-2.5 m/min. According to the technological method, the raw materials, the pelletizing technological parameters and the technological parameters of the grate-rotarykiln are controlled, by optimizing the technological conditions, the strength of the preheated pellets in the grate-rotary kiln can be improved, the strength of finished pellets can also meet the blast-furnace smelting requirement, and the economic benefits are considerable.

The invention relates to an efficient spiral extrusion structure suitable for a 3D printer and relates to the field of 3D printer equipment. The efficient spiral extrusion structure comprises a hollowshaft type motor, a threading pipe, an upper fixing seat and a lower fixing seat, wherein the hollow shaft type motor is provided with a hollow rotating shaft, the two ends of the threading pipe areseparately mounted on the upper fixing seat and the lower fixing seat, two extrusion screws are symmetrically arranged outside the two sides of the threading pipe, and notches are formed in two corresponding side walls of the threading pipe; the upper and lower ends of the extrusion screws are rotatably connected with the upper fixing seat and the lower fixing seat, and the upper ends of the two extrusion screws are sleeved with a driven gear; a rotating shaft step hole is formed in the upper surface of the upper fixing seat, the lower end of the hollow rotating shaft is adapted to be insertedinto the rotating shaft step hole, and a driving gear is fixed on a shaft body of the lower portion of the hollow rotating shaft in a sleeving mode; a consumable limiting device is arranged above thehollow shaft type motor; and a cooling fan is mounted on the same sides of the upper fixing seat and the lower fixing seat. The spiral extrusion structure is small and reasonable in design, convenient to clean and maintain, and remarkably improves the extrusion effect of a spiral extrusion consumable.

The invention relates to milk tea powder of mulberry black tea and its preparation method. The milk tea powder of mulberry black tea comprises the following raw materials by mass percentage: 61-65% of whole milk powder, 4.5-9.5% of mulberry black tea powder, 30-33% of non-dairy creamer, 0.01-0.04% of essence and 0.02-0.05% of stevioside. Compared with prior art, the preparation technology of the product has the advantages of simple processing, low production cost and easy enforcement. The mulberry black tea which can replace common tea is capable of raising the nutrition value and health care function of the milk tea.

The invention discloses a diesel producing method based on raw material with polywater, which comprises the following steps: fridging to dewater through refractor; heating to dewater; catalyzing to crack at 320-380 deg.c in the autoclave; condensing the distillate; cooling; proceeding non-continually at atmospheric pressure; adapting Si-Na-Mg catalyst. The invention can transfer water into useful material, which reduces the environmental pollution and cost.

The invention discloses a preserved diluent of cranoglanis bouderius seminal fluid and a cryopreservation method of the cranoglanis bouderius seminal fluid. The preserved diluent is prepared from sugar, sodium salt, potassium salt, calcium salt, tyrosine, glycine, distilled water and an anti-freezing agent-dimethyl sulfoxide. The cryopreservation method comprises the following steps: selecting good male parent fish meeting the conditions to carry out seminal fluid collection, preserving in the preserved diluent in which neomycin sulfate and streptomycin are added, adopting a cooling rate which is -10.5 DEG C/30 seconds, and putting the seminal fluid in liquid nitrogen for cryopreservation after reaching -150 DEG C; when unfreezing and recovering are needed, taking out the cyropreserved cranoglanis bouderius seminal fluid, adding a PBS (Phosphate Buffer Solution) of which the volume percentage is 0.65 to 0.7 percent as an unfreezing solution, and putting the cranoglanis bouderius seminal fluid in a water bath of which the temperature is 32 to 40 DEG C for rapid unfreezing and recovering. According to the technology disclosed by the invention, the durability of preservation time of the cranoglanis bouderius seminal fluid can be ensured, the protection effect of the seminal fluid is good, and sperms after preservation are high in survival rate and good in vitality.

The invention discloses a constant current-compensating solar LED street lamp. The constant current-compensating solar LED street lamp comprises a photosensitive sensing circuit, a PWM switching circuit, a storage battery pack circuit and a compensating circuit, wherein the photosensitive sensing circuit is used for generating a switching signal of the LED street lamp according to the intensity of ambient light; the PWM switching circuit is used for performing constant-current driving control on the LED street lamp so as to meet a road illuminating requirement; the storage battery pack circuit is used for converting solar energy into electric energy needed by the LED street lamp during working; the compensating circuit is used for performing temperature and constant current compensation on the LED street lamp; switching between an alternating current power supply and the storage battery pack circuit is controlled by a control module in an interlocking manner; the control module is further used for controlling the PWM switching circuit and the compensating circuit in a cooperating manner so as to output constant current to the LED street lamp. The LED street lamp can make full use of the solar energy, can automatic turn on or off, has higher light-emitting efficiency, is more stable in illuminance, better in illuminating effect and longer in service life, and can bring considerable economic and practical values.

The invention discloses a behavior recognition method based on surface electromyography measurement of the waist and shoulder. The method is to divide the motion process into time segments, set identification codes in the time segments, and compare the identification codes with preset values to determine whether the motion process conforms to the motion described by a preset curve so as to realizesignal recognition, the recognition method being realized by using a multi-physiological signal acquisition system. The recognition method can recognize the behavior of a person without motion capture under the premise that the degree of freedom of motion is limited, and does not require subjective attention and operation, is not long in time delay, does not occupy space, can realize the monitoring of the force exerting tendency, provides signal output in the fields of driving, entertainment interaction, public health monitoring, etc., which have low reliability requirements and frequent interactions, has broad application prospects, and can recognize the movement and also the change in the force exerting of a patient. This method can be used to monitor human lesions and assess labor risks, and has considerable practical value and economic potential.