62results about How to "Reduce destabilizing effects" patented technology

A folding axis / periscope telescope optical system transmission ratio measurement system includes: 1) light source component, including the light source and modulation wheel; 2) launching unit, including parallel tubes and changeable diaphragm; 3) receiving unit, including integral ball and photomultiplier tube for detecting incident light energy ; 4) control processing unit, including lock phase amplifier, analog-digital conversion circuit, SCM and display; its characteristic is that the launching unit and receiving unit are made to separate structure, and each separate structure can be independently lifted or pitching adjusted to meet the testing requirements of the folding axis telescope optical system transmission ratio; to improve the measurement precision, the system uses two optical paths method, to a certain extent, excluding the signal drift of the light source, detector, high-voltage power supply, amplifier and other components, and after a 100% calibration, it can process measurement in a long time.

The invention discloses a maintenance method of special chemical nickel plating liquid for a nickel-phosphorus alloy on a surface of an inclined disc of a vehicle air conditioner compressor. A nickel-phosphorus alloy wear resisting layer is prepared on the surface of a ring shoulder of the inclined disc of the air conditioner compressor through the chemical nickel plating liquid, and has a self-lubricating function to improve the wear resistance and to prolong the service life of the compressor. The obtained nickel-phosphorus alloy is excellent in self-lubricating effect, improves the wear resistance of the inclined disc, and prolongs the service life of the compressor; and the maintenance method improves chemical nickel plating maintenance, is more convenient for feeding and maintenance of the plating liquid, and guarantees the plating stability.

The invention discloses a cascading type fiber laser comprising an optical resonant cavity, a plurality of pump input fibers, pump output fibers, n*1 fiber combiners formed by coupling the pump input fibers and the pump output fibers and (1+1)*1 fiber combiners formed by coupling and connecting an active double-clad fiber and the side faces of the pump output fibers, wherein the optical resonant cavity is formed by sequentially connecting the active double-clad fiber, an optical isolator, an optical coupler and a narrow-band optical filter of the (1+1)*1 fiber combiners and has a ring structure, the optical coupler is divided into a small output end and a big output end, the small output end is fused and connected with the input end of the narrow-band optical filter, and the big output end is fused with the cascaded fiber combiner groups on the pump output fibers. A plurality of fiber combiner groups connected in series together can evenly and fully absorb pump light energy step by step and decrease the unstable influence caused by instantaneous overhigh pump light power or power drift in a high-power pump to the laser output power.

The invention discloses a high-temperature-resistant hydraulic rubber material. The mineral composition of the high-temperature-resistant hydraulic rubber material includes tricalcium silicate, dicalcium silicate, and amorphous silica powder, wherein the weight content of tricalcium silicate is 25%-50%, the weight content of dicalcium silicate is 25%-40%, amorphous silica powder is 25%-50%, and the calcium / silicon ratio is less than 2. The invention also discloses a mortar made of high-temperature-resistant hydraulic adhesive material, which is obtained by uniformly mixing the following raw materials in weight proportions, including: 350-650 parts of high-temperature-resistant hydraulic adhesive material, 200-500 parts of sand , active mineral admixture 50-200 parts, refractory filler 100-200 parts, dispersant 0.5-5 parts. The mortar thus formulated has excellent high temperature resistance and can be used for construction of building parts exposed to high temperature.

An anatomical imaging system of the sort having a fixed gantry and a rotating disc, with an adjustable angle of tilt and increased structural integrity, and with improved power transmission and position sensing.

The invention discloses a maintenance method of special chemical nickel plating liquid for a nickel-phosphorus alloy on a surface of an inclined disc of a vehicle air conditioner compressor. A nickel-phosphorus alloy wear resisting layer is prepared on the surface of a ring shoulder of the inclined disc of the air conditioner compressor through the chemical nickel plating liquid, and has a self-lubricating function to improve the wear resistance and to prolong the service life of the compressor. The obtained nickel-phosphorus alloy is excellent in self-lubricating effect, improves the wear resistance of the inclined disc, and prolongs the service life of the compressor; and the maintenance method improves chemical nickel plating maintenance, is more convenient for feeding and maintenance of the plating liquid, and guarantees the plating stability.

The invention discloses an angle modulation and wavelength modulation surface plasmon resonance (SPR) sharing system which relates to the field of optics and aims to solve the problems of function singleness of an existing angle modulation SPR sensor and an existing wavelength modulation SPR sensor, low data measurement accuracy of the angle modulation SPR sensor, difficulty in real-time acquisition of reference spectra of the wavelength modulation SPR sensor and the like. Light output by a light source is emitted to a first end surface of a reflecting prism to form reflected light and transmission light; the reflected light penetrates through a microscope objective, is focused on a gold film, is totally reflected by the gold film, then penetrates through the microscope objective, is reflected by a second end surface of the reflecting prism and then is emitted to a receiver; the transmission light is reflected in the reflecting prism, is transmitted from the first end surface of the reflecting prism, is reflected by a reflecting mirror and is emitted to a spectrometer. The angle modulation and wavelength modulation SPR sharing system is specifically applied to the fields of chemical analysis, biomedicine, environment monitoring, food analysis, medical treatment, pharmacy and the like.

The invention provides a digital display type drill rod and drill core tribometer. A drill core is fixed at the lower end of a pressurizing and holding device, the pressurizing and holding device is arranged on a support, and the upper end of the pressurizing and holding device is provided with a pressurizing cake. A simulation drill rod is connected with a shaft of a motor and rotates along with the shaft, the drill core is pressed on the simulation drill rod, and a guide rod for transmitting the friction force between the drill core and the rotating simulation drill rod is connected with a sensor after penetrating through the pressurizing cake. The digital display type drill rod and the drill core tribometer has convenient detection, small and exquisite structure and stable and accurate reading.

The invention provides a copper-containing antibacterial high-entropy alloy and a preparation method thereof. The general formula of the copper-containing antibacterial high-entropy alloy is FeCoxCryCuz, x is larger than or equal to 0.3 and smaller than or equal to 0.5, y is larger than or equal to 0.5 and smaller than or equal to 1.0, z is larger than or equal to 0.2 and smaller than or equal to 0.6, and x, y and z are molar ratios. The preparation method of the copper-containing antibacterial high-entropy alloy comprises the following steps that after Fe, Co, Cr and Cu are stacked according to the proportion, vacuum arc melting is adopted, and the copper-containing antibacterial high-entropy alloy is obtained. The copper-containing antibacterial high-entropy alloy has excellent antibacterial performance in an as-cast state, after the copper-containing antibacterial high-entropy alloy and escherichia coli / staphylococcus aureus (the bacterial concentration is about 105 CFU / mL) are co-cultured for 24 hours at the temperature of 37 DEG C, the antibacterial rate reaches up to 99.97%, the antibacterial efficiency is far better than that of traditional copper-containing 304 stainless steel, meanwhile, the copper-containing antibacterial high-entropy alloy has excellent strength and certain plasticity, and the copper-containing antibacterial high-entropy alloy can be widely applied to the field of stainless steel. The compression yield strength of an as-cast sample at room temperature exceeds 950 MPa, and the engineering strain (compression fracture strain) exceeds 30%.

The invention relates to a light beam generator and a digital holography device for hypervelocity holography. The light beam generator comprises a pulsed laser and a multi-mode fiber coupler, wherein the multi-mode fiber coupler comprises an odd number of output ends on the same plane, and the number of the output ends is the same as that of beam splitting laser pulses; the optical fiber length differences among all the output ends are determined on the basis of a preset relative time delay, and the positions of all the output ends on the plane are determined on the basis of a preset spatial orientation angular difference; and the arrangement of the output ends ensures that any two output ends do not form central symmetry. The digital holography device comprises the light beam generator and a subsequent optical system, wherein the subsequent optical system comprises a second lens and a photosensitive device. By implementing the invention, laser pulses having different spatial orientation angle codes and strictly controlled relative time delays can be conveniently obtained so as to form a plurality of hypervelocity holographic images, and the invention has simple and compact structure and high system stability and reliability.

The invention discloses a tape casting membrane preparation production line, and relates to the field of membrane preparation equipment. The tape casting membrane preparation production line comprisesa machine frame, wherein a hard membrane preparation plate, a bearing platform, a coating mechanism, a pre-drying mechanism, a drying oven and a conveying system are arranged on the machine frame; the bearing platform is used for bearing the membrane preparation plate; the coating mechanism is used for coating the membrane preparation plate with a membrane preparation solution; the pre-drying mechanism is positioned above the bearing platform; the drying oven is positioned at the downstream part of the bearing platform; the conveying system is used for conveying the membrane preparation plateto the drying oven from the bearing platform and then cyclically conveying to the bearing platform; the coating mechanism is arranged above the bearing platform. The continuous membrane preparation on a hard plate is realized; compared with a traditional flexible conveying belt membrane preparation mode, the device can effectively provide stable, flat and continuous membrane preparation conditions for the coating mechanism; the conditions are provided for preparing thinner and more uniform diaphragms.

A folding axis / periscope telescope optical system transmission ratio measurement system includes: 1) light source component, including the light source and modulation wheel; 2) launching unit, including parallel tubes and changeable diaphragm; 3) receiving unit, including integral ball and photomultiplier tube for detecting incident light energy ; 4) control processing unit, including lock phase amplifier, analog-digital conversion circuit, SCM and display; its characteristic is that the launching unit and receiving unit are made to separate structure, and each separate structure can be independently lifted or pitching adjusted to meet the testing requirements of the folding axis telescope optical system transmission ratio; to improve the measurement precision, the system uses two optical paths method, to a certain extent, excluding the signal drift of the light source, detector, high-voltage power supply, amplifier and other components, and after a 100% calibration, it can process measurement in a long time.

The invention discloses machine-made sand concrete and a preparation method thereof. The concrete is prepared from 120 to 200 parts of cement, 70 to 110 parts of coal ash, 750 to 1200 parts of gravels, 400 to 750 parts of machine-made sand, 150 to 220 parts of tap water and 5 to 8 parts of additives, wherein the machine-made sand comprises 150 to 200 parts of coarse sand and 200 to 550 parts of fine sand. The flowability (expansibility) is 550 + / -100 mm, the concrete is soft, easy to construct and pump, low in water-binder ratio and high in strength, and the adopted artificial machine-made gravel is environmentally friendly and capable of saving energy.