389 results about "Viscosity coefficient" patented technology

An example of the present invention is a micromechanical device including, a substrate in which a signal line is provided, a micromachine which is mounted on the substrate, is formed of a conductive material into a beam-like shape, is elastically deformed by a function of an electric field in such a manner that the beam-like part moves closer to or apart from the signal line, and changes the electric characteristics concomitantly with the deformation, a deformation restraint section constituted of a material having a higher viscosity coefficient than the conductive material, provided on the opposite side of the micromachine to the signal line, for restraining deformation of the micromachine in a direction in which the micromachine is separated from the signal line, and a sealing body provided on the principal surface of the substrate, for covering the micromachine with a hollow section located therebetween.

The invention discloses a calculation method for the debris flow section mean flow rate and the application. The calculation method comprises the steps that parameters such as the debris flow fluid volume weight, the debris flow solid material volume weight, the debris flow channel or drainage groove gradient, the debris flow section hydraulic radius, the debris flow channel or drainage groove external roughness and the debris flow viscosity coefficient are determined by the means such as field investigation and measurement, actual sampling and actual volume weight measurement and indoor rheological experiments, the obtained parameters are substituted into a calculation formula for the debris flow section mean flow rate, and therefore the accurate debris flow section mean flow rate can be obtained. According to the method, the external roughness variations caused by the debris flow channel or drainage groove shape variations and the internal roughness generated by the debris flow fluid property are comprehensively taken into account, the debris flow section mean flow rate can be reasonably determined, a basis is provided for the debris flow exploration and the prevention engineering design, and the method is suitable for the requirements of the outdoor debris flow exploration and the actual engineering design.

The invention relates to a technology for testing rock mass mechanics parameters, in particular to a method for testing rock mass mechanics parameters based on an explosion seismic wave space-time attenuation law. The method comprises the steps of data testing and test data processing; and geometric parameters and mechanics parameters of rock mass can be obtained by corresponding testing and calculating. The parameters mainly comprise the viscosity coefficient of the rock mass, the equivalent elastic modulus of the rock mass, an azimuth angle of a structural plane, the rigidity of the structural plane, the thickness of the structural plane, and the elastic modulus of the structure plane; and the relevant parameters of the rock mass are given for analysis of slope stability.

The invention provides a tissue viscoelasticity measuring method based on shear wave amplitude and phase detection. An acoustic radiation force excitation probe and an ultrasonic echo detection probe are used for detection at the same time, the acoustic radiation force excitation probe generates push wave beams, tissue generates shear waves at certain frequency, the ultrasonic echo detection probe generates detection wave beams to detect amplitude attenuation and phase change of the shear waves on a propagation path, the elasticity modulus and viscosity coefficient of the tissue are estimated through an amplitude attenuation coefficient and a speed detection value, in other words, the elasticity modulus and viscosity coefficient of the tissue can be quantitatively detected at the same time, precise and rich mechanical parameter information is provided for diagnosis of multiple diseases, the clinical application range of ultrasonic elastography can be widened, and the level of ultrasonic elastography can be improved. The method can carry out detection through the shear waves at one frequency, the system complexity and design cost are reduced, detection efficiency is improved, phase detection noise caused by high-frequency shear waves is avoided, and the accuracy of mechanical tissue parameter detection is improved.

The invention discloses a self-permeating concrete crack repairing glue and the preparing method thereof, which is characterized in that after mixing and stirring evenly 10-15 percent vinyl polyurethane with 10-60 percent vinyl monomer, 10-60 percent unsaturated epoxy resin, 0.1-10 percent accelerant, and 0.01-1 percent polymerization inhibitor according to the weight proportions each constituent accounting for, the main constituent A is obtained when the above mixture is discharged; after mixing and stirring evenly 60-90 percent plasticizing agent with 1-35 percent silane resin acceptor and 1-5 percent evocating agent, and then the accessory constituent B is obtained after the above mixture is discharged. Before in use, main constituent A and accessory constituent B are required to be packed separately, and during in use, the main constituent A and accessory constituent B are required to be mixed together by mixing proportion according to requirements. The invention integrates the advantages of the polyurethane, the epoxy resin, and the acrylic ester into a whole; has the advantages of low viscosity coefficient, self-permeability, quick firming, high strength, high durability and simple operation; can be used for repairing the cracks of the road, the dam or the airdrome.

An electrophotographic toner having a core-shell structure including a crystalline resin in its core region or a sea-island structure including a crystalline resin in its island region, wherein the toner has 1) a resistance of 5.0×10¹² Ω·cm or higher, 2) a dynamic viscosity coefficient of 3×10³ Pa·s or higher at a temperature which is 50° C. higher than a melting point of the crystalline resin, and 3) a dynamic viscosity coefficient of 1×10⁵ Pa·s or lower at a temperature which is 10° C. higher than the melting point of the crystalline resin.

The invention belongs to the technical field of metering pumps, and particularly relates to the flow compensation technology of a digital frequency conversion metering pump. The flow compensation technology is characterized by comprising a method for determining and compensating for the error of manufacturing accuracy, a method for determining and compensating for rotate speed and outlet pressure, a method for determining and compensating for fluid viscosity coefficients and a method for determining and compensating for working hours. In the technology, error values of theoretical displacement caused by four factors of the manufacturing accuracy, the rotate speed and outlet pressure, the fluid viscosity coefficients and the working hours are calculated, and the theoretical displacement is compensated for according to the error values to obtain accurate actual displacement finally, so that the flow is calculated accurately by using the actual displacement in actual flow control; and in the technology, the manufacturing accuracy, the rotate speed and outlet pressure, the fluid viscosity coefficients and the working hours which influence the output displacement of the metering pump can be compensated, so the output accuracy of the metering pump is improved effectively, and the accurate constant-ratio addition of fluid is realized.

Fused silica glass having an internal transmittance of UV with 245 nm wavelength, being at least 95% at 10 mm thickness, a OH content of not larger than 5 ppm, and a content of Li, Na, K, Mg, Ca and Cu each being smaller than 0.1 ppm. Preferably the glass has a viscosity coefficient at 1215° C. of at least 10^11.5 Pa·s; and a Cu ion diffusion coefficient of not larger than 1×10⁻¹⁰ cm²/sec in a depth range of greater than 20 μm up to 100 μm, from the surface, when leaving to stand at 1050° C. in air for 24 hours. The glass is made by crystobalitizing powdery silica raw material; then, fusing the crystobalitized silica material in a non-reducing atmosphere. The glass exhibits a high transmittance of ultraviolet, visible and infrared rays, has high purity and heat resistance, and exhibits a reduced diffusion rate of metal impurities, therefore, it is suitable for various optical goods, semiconductor-production apparatus members, and liquid crystal display production apparatus members.

The invention relates to a long-acting naltrexone implant and a preparation method thereof, which belong to the field of pharmaceutical preparations. The long-acting naltrexone implant comprises a polylactic acid and naltrexone, and is characterized in that the viscosity coefficient of the polylactic acid is 0.5-2.5dl/g (chloroform, 30 DEG C); the ratio of the polylactic acid to the naltrexone is1:(0.5-1.8) in parts by weight; the composition structure of the long-acting naltrexone implant is a particle tabletted and coated structure; coated particles are slow release pellets which can be sieved by a 20-60 mesh screen in particle size; the slow release pellets comprise the polylactic acid and the naltrexone; the ratio of the polylactic acid to the naltrexone in the slow release pellets is 1:(1-2) in part by weight; and a coating layer is a DL-polylactic acid. The long-acting naltrexone implant has a good curative effect, better drug-loading rate and better drug release completeness, and has small side effect on human bodies.

The present invention discloses a detection/control method and a system for steel ladle roughing slag. The method comprises contents in two aspects as follows: according to vibration signals, molten steel flow velocity, molten steel liquid level, slide gate opening degree, molten steel density and molten steel viscosity coefficient, the detection of steel ladle roughing slag state in casting process is realized, so as to get the roughing slag state of the steel ladle, as well as roughing slag amount; according to the detected steel ladle roughing slag state, a slide gate is automatically controlled to be closed with the preset roughing slag sensitivity. The method improves the instability and inaccuracy of adopting single vibration signal for detection in the prior art, improves the precision and reliability of roughing slag detection systems, can close the slide gate in time, prevent excessive steel ladle roughing slag and improve molten steel purity through automatic control, and improves molten steel yielding rate on the premise of guaranteeing molten steel quality. The system is low in cost, high in reliability and low in maintenance cost, which is extensively applied to metallurgical industry.

An ultrasonic heat transfer enhancing tube shell heat exchanger is provided, which belongs to the technology field of energy-saving of heat exchanger of industry. The heat exchanger comprises a shell, a heat exchanger tube, a tube side inlet, a tube side outlet, a shell side inlet, a shell side outlet, a first tube plate, a second tube plate, a clapboard, a baffle and a power ultrasonic transducer. The power ultrasonic transducer inserts from the central circular hole of the left end surface of the shell, passes through a circular casing and the central circular hole of a first tube plate in sequence, penetrates a circular hole support and is sealed in the shell side space of the heat exchanger by a sealing cover plate. The ultrasonic wave is projected radially along the power ultrasonic transducer, intensifies liquid oscillation adopting ''cavitation effect'' produced by the ultrasonic wave when spreading in the liquid, reduces liquid motion viscosity coefficient, enhances the heat exchange efficiency of the heat exchanger tube under the condition of low flow velocity of liquid, greatly reduces energy consumption of power plant and has obvious energy-saving effect. In addition, the ''cavitation effect'' of the ultrasonic wave can prevent the surface of the heat exchanger tube from scale formation and has strong adaptability and operability.

The invention relates to a device for dissolving, curing and stirring hydrophobic associating polymer, comprising a driving device, a stirring and driving decelerating mechanism, a stirring shaft anda stirring paddle arranged on the stirring shaft. The device is characterized in that the stirring paddle is a push-up type wide blade axial flow paddle. By adopting the push-up type wide blade axialflow stirring device, the device can obviously improve axial circular flow, evenly and uniformly dissolves the polymer, and can keep higher viscosity coefficient, thereby accelerating the dissolving and the curing of the polymer and being capable of greatly improving the oil displacement efficiency of the polymer.

An object of the invention is to provide an additive for papermaking containing amphiprotic acrylamide polymer, which has excellent paper force improvement effect, excellent water filtration character and stuffing preserving rate. The additive for papermaking containing amphiprotic acrylamide polymer is characterized in that it has a specific relationship, the weight average molecular weight/average number molecular weight, intrinsic viscosity, gyroradius, solid content, viscosity coefficient, PH and light transmittance ratio are specific scope, and is obtained by performing polymerization using specific amount of specific monomer.

The invention discloses a method for measuring the maximum scour depth of a viscous debris flow gully bed and the application thereof. The method comprises the following steps: weight Gamma1, depth h and a dynamic friction angle Beta of a viscous debris flow body, weight Gamma2, an internal frictional angle Phi and a viscosity coefficient C of cumulus deposits of an original gully bed, and vertical gradient J of the gully channel are determined by means of survey, measurement and sampling of the debris flow gully, testing of debris flow characteristic parameters and the like; and the obtained parameters are substituted into a calculation formula to obtain the maximum scour depth of the viscous debris flow gully bed. The method is applicable to the design of foundation embedded depth in a viscous debris flow prevention project, and the obtained maximum scour depth of the viscous debris flow gully bed serves as the minimum foundation embedded depth in the prevention project. Compared with the prior art, as the method is based on rigorous theory derivation, the maximum scour depth of the viscous debris flow gully bed can be reasonably determined, and references on the design of the foundation embedded depth in the prevention project are provided; and the method is high in result accuracy and can meet the requirements of the practical project.

The invention discloses a ball-dragging-type viscometer. The ball-dragging-type viscometer is suitable for liquid with small viscosity coefficients as well as non-transparent liquid and high in measurement accuracy. According to the structure, the ball-dragging-type viscometer comprises a shell, a screw drive mechanism, a speed control system and a tension detection system are arranged in the shell, and the speed control system structurally comprises a controller, a servo motor, a motor driver and a rotary encoder, wherein the servo motor is connected with the controller through the motor driver and the rotary encoder is connected with the controller. According to the ball-dragging-type viscometer, a traditional ball falling method is replaced by a ball dragging method, namely, a ball is dragged at constant and low speed through the screw drive mechanism, so that the ball moves upwards at given speed and the viscosity of liquid is calculated according the Stokes formula shown in the specification according to measurement of tension borne by the ball. The ball-dragging-type viscometer has the advantages of being convenient to use, capable of immediately conducting repeated measurement, simple in structure, capable of easily achieving automatic measurement and the like.

The invention discloses a method for making crust element which comprises the following steps that: a crab shell which is cleaned and soaked for the first time is put into a sodium hydrate solution for heat preservation; the crab shell which is washed by tap water to the neutral is soaked for the second time, the acid liquor is scoured off by the tap water; the curst element soaked by hydrochloric acid is put into the sodium hydrate solution for heat preservation and then is fished out as well as is washed by the tap water to the neutral, and the crust element is obtained. The method for making chitosan by the crust element comprises the following steps that: the crust element is put into the sodium hydrate solution and is sealed, after temperature preservation and the reaction, the mixture is soaked by the tap water and is washed by the tap water; the processed chitosan is taken out to be dried and put into the sodium hydrate solution as well as be sealed while preserving the temperature, after the reaction, the chitosan is taken out and is soaked in the tap water as well as is taken out and dried, thereby obtaining the chitosan. By processing by the method, the reaction speed is increased by 30 times, the alkali liquor dosage is reduced by 50 percent; the made crust element has white color, the crust element is washed by water and soaked to produce the chitosan, the molecular weight is great, the deacetylation is more than or equal to 95 percent, and the viscosity coefficient is more than or equal to 2000MPa.S.

The invention discloses a RANS/LES method based on tubulence energy and turbulence length scale truncation. The method mainly establishes a novel truncation formula Fr of turbulent viscosity coefficient, and the truncation turbulent viscosity coefficient is obtained. Fr=1, calculation shows RANS; 0<Fr<1, a LES-like model is shown. According to the definition of molecular viscosity coefficient and the turbulence length scale energy spectrum which meets the formula ( the formula is shown in the description.), a Fr calculation formula is deduced. By the combination of a standard K-< model, the RANS/LES method can be achieved. In this way, the method can calculate velocity pulsation at the condition of less grids, and the obtained average velocity comparatively accords with a DNS result.

The present invention provides a drum-type washing machine and a method for manufacturing a hanger bracket with a damper, in the damper by using magnetoviscous fluid to absorb vibration of a sink, assembly is easy, and structure is simple. A damping force of the damper (41) is controlled by changing viscosity coefficient of the magnetoviscous fluid (69) by energizing a coil (55). A cylinder (42) of the damper (41) is provided with the coil (55) coiled to a bobbin (56), and then provided with a holding member (60) for accepting a magnet yoke (65), a sealing member (64) and a bearing (63), a shaft (43) is inserted across, and the damper (41) is assembled by filling the magnetoviscous fluid (69) between the shaft (43) and the bobbin (56), between the shaft (43) and a magnet yoke (52), and between the shaft (43) and the magnet yoke (65). Then, a spring is mounted between the holding member (60) and a spring base (71a) of the shaft (43) to assemble the hanger bracket (27).

The invention relates to a microelement fertilizer for agricultural use. The microelement fertilizer is calcium hydrogen phosphate suspending agent which is sticky with high concentration. The compositions by mass percent of the microelement fertilizer are: 20 to 80 percent of raw calcium hydrogen phosphate powder, 1 to 7 percent of wetting agent, 2 to 10 percent of dispersant, 2 to 6 percent of antifreeze, 0.2 to 1.0 percent of defoaming agent, 0.1 to 0.8 percent of thickening agent, and 2.2 to 76.7 percent of water. The compositions are mixed evenly with high shear and are grinded to the fineness between 0.5 and 6 micron; the viscosity coefficient of the mixture is adjusted by the thickening agent to obtain the calcium hydrogen phosphate suspending agent. The microelement fertilizer is prepared through adopting the high-performance addition agent and advanced technology. The microelement fertilizer is characterized by high content of activity components, good dispersion performance and stable heat storing performance. In the application, the microelement fertilizer has the advantages of rapid calcium supplement speed, good effect, small dosage of the fertilizer and environmental protection.

A noise reduction method for a weapon cabin of a supersonic aircraft on the basis of turbulent flow on a front-edge surface includes steps of (1), acquiring the flight speed, the incoming flow density, the incoming flow temperature, an incoming flow viscosity coefficient and the thickness of a boundary layer of the front-edge surface of the weapon cabin according to the flight condition of the supersonic aircraft, and computing an incoming Reynolds number on the basis of the thickness of the boundary layer of the front-edge surface of the weapon cabin; (2), selecting a fundamental-frequency disturbance sheet; (3), computing the ratio of the length to the depth of the supersonic aircraft according to the length, the depth and the width of the weapon cabin of the supersonic aircraft, reducing the thickness H of the fundamental-frequency disturbance sheet by 10-20% if the ratio is larger than 4, or increasing the thickness H of the fundamental-frequency disturbance sheet by 10-20% if the ratio is not larger than 4; and (4), fixing the fundamental-frequency disturbance sheet on the supersonic aircraft to complete noise reduction for the weapon cabin of the supersonic aircraft on the basis of the turbulent flow on the front-edge surface. The noise reduction method has the advantage that the problem of severe self-sustained oscillation of pressure of the inside of the cabin after the buried weapon cabin is opened during supersonic flight of the supersonic aircraft can be effectively solved.

A substrate processing apparatus of the present invention includes a holding means for rotatably holding a substrate; a coating solution supply nozzle for supplying a coating solution onto a front surface of the substrate to be processed held by the holding means; a treatment chamber housing the holding means and the coating solution supply nozzle; a cooling means for cooling the substrate before the coating solution is supplied to the substrate, to a predetermined temperature; a heating means for heating the substrate coated with the coating solution to a predetermined temperature; and a transfer means for transferring the substrate between the treatment chamber, the cooling means and the heating means, wherein the treatment chamber, the cooling means and the heating means are partitioned from an ambient air, and wherein at least the treatment chamber is connected to a gas supply mechanism having a supply source of a gas having a kinematic viscosity coefficient higher than that of air and kept at a predetermined concentration of the gas.