58 results about "Micro topography" patented technology

A seal ring of a shaft seal has micro-topography depth features, such as wavy faces or radial grooves, formed in the seal face which define a hydrodynamic seal region between opposing seal faces. The micro-topography depth features are formed by an excimer laser shaped such that the beam shape at least has non-linear side edges which define convergent side areas of the beam. The convergent side areas are defined by side edge sections which converge toward each other and preferably are non-linear. For example, the beam shape may be circular or elliptical. The laser beam first cuts repeatedly along the same beam path to define a cut with an increasing depth, whereby the laser beam is shifted incrementally sidewardly to define multiple adjacent beam cuts that form the micro-topography feature such as a valley of a wavy face, a radial groove or the like. As the laser beam cuts adjacent parallel grooves, sidewardly adjacent beam passes overlap one with each other and blend the edges of the sidewardly adjacent grooves together. The method of the invention provides micro-topography depth features that are precisely and accurately defined to improve performance of the seal ring.

Micro-topography of a surface influences cell adhesion and proliferation. To improve adhesion, polyelectrolyte multilayers (PEMs) are built on patterned support layers to increase surface wettability, thereby improving attachment and spreading of the cells. Physical parameters, such as pattern size and pitch, in part, regulate cell adhesion and proliferation. Varying the surface topography provides a method to influence cell attachment and proliferation for tissue engineering applications.

The present invention relates to biocompatible non-woven fibrous materials having a nano-micro topography and methods for producing such materials. The materials may be used to cover implantable medical devices and to fabricate a three-dimensional drug-eluting fibrous matrix featuring accurate spatial positioning of the drug particles within the matrix.

The invention provides a micro-topography measurement method based on a white light interference zero optical path difference position picking algorithm. The micro-topography measurement method basedon the white light interference zero optical path difference position picking algorithm comprises the following steps: S1, obtaining a white light interference template curve; S2, vertically scanningan object to be measured, collecting interference fringes, and obtaining sampling points; S3, using a gravity center method or an extremum method to quickly and coarsely locate the zero optical path difference point; S4, determining a search range, taking a number of sampling points within a certain range around the zero optical path difference point as points to be matched; S5, matching the points to be matched with the template curve in the search range to obtain a finely positioned zero optical path difference point; and S6, obtaining the accurate relative height of the object surface topography according to a correlation between the zero optical path difference and the morphology height, thereby reconstructing the 3D shape of the object to be measured. The micro-topography measurementmethod based on the white light interference zero optical path difference position picking algorithm has simple algorithm, high speed, high precision and good anti-noise ability.

The invention discloses a vacuum atomic force microscope and a using method thereof, belonging to the field of micro-topography detecting equipment; the microscope comprises an electron beam launching device, a secondary electron detector, a probe with a cantilever, a piezoelectric ceramics scanner and a feedback controller. When in work, electron beams are irradiated to the cantilever of the probe; as the acting force between the probe and sample atoms causes the cantilever to become deformed; a secondary electron signal changes; the acting force between a pinpoint and the sample is controlled to be constant by the signal feedback; the pinpoint scans the surface of the sample point by point and can image surface topography of the sample. The currently common optical lever does not need to be drawn into the invention; the invention overcomes design difficulty brought about by the conventional atomic force microscope applied in vacuum environment, synthesizes two nanophase material characterization methods which are the advantages of the atomic force microscope and an electronic microscope, and can realize the continuous measuring on the material from millimeter size to the sub-nanometer size.

The invention discloses a quartz tuning fork-based nano measuring head, which is characterized in that a quartz tuning fork is adopted as a micro-force sensor for sensing sample micro-topography, a piezoelectric driver is fixed on one tuning fork arm of the quartz tuning fork, and a piezoelectric sensor is fixed on the other tuning fork arm; and the vibration direction of the quartz tuning fork is set to be vertical to the surface of a sample, the tuning fork arm on one side close to the sample is fixedly provided with a tungsten probe vertically pointing to the surface of the sample, a sine alternating-current signal serving as a vibration exciting signal is applied to the piezoelectric driver, and the piezoelectric sensor detects a tuning fork resonance signal. The vibration direction of the tuning fork is vertical to the surface of the sample, so the contact time of the probe and the sample is short, the damage to the sample is little, and the quartz tuning fork-based nano measuring head is particularly suitable for detecting the surface of soft materials with high precision and micro measuring force.

The present invention relates to a method for optimizing the topography and the geomorphology of a dump in a large opencast coal mine in the loess area. The method comprises: "soft base removal", "base gully filling", "smooth base blasting treatment", "base piling for skid resistance", "fan-shaped disposal and layered compaction", and other steps. According to the method provided by the present invention, based on the simulation of the original "plateau" geomorphology millions years ago in the loess plateau, the artificial landmine terraces mode of the traditional sloping land in the water and soil erosion area in the Loess Plateau are changed; and relying on the convenient conditions of the mining and moving soil, the large-scale earthwork is used to deploy and form the basin geomorphology to co-ordinate the hydrological topography, and micro-topography modification is used to reduce the generation of the surface runoff, so that under the premise of ensuring the stability of the dump, the geomorphology of the dump in the large opencast coal mine in the loess area is restored to the "plateau" geomorphology, and the foundation is provided for the restoration of ecosystems and biological diversity.

The invention discloses a method for cultivating oil sunflowers in saline-alkali lands by means of brackish water underground drip irrigation. The method has the advantages that structures for perfectly regulating and controlling water, fertilizers and air for root zones of the oil sunflowers are proposed and constructed, micro-topography structures, underground drip irrigation and plastic film mulching technologies are coupled with one another, accordingly, effects of conserving soil moisture and reducing salt can be realized to the greatest extent, and a relatively good soil environment canbe provided for growth and development of crops; thresholds for perfectly regulating and controlling the water, the fertilizers and the air for underground drip irrigation for the oil sunflowers in the saline-alkali lands are proposed, appropriate quantities of water and fertilizers and dissolved oxygen with suitable concentration are directly delivered to positions near root systems of the cropsin underground drip irrigation modes, accordingly, soil in the main root zones of the oil sunflowers can always keep in the optimal water and nutrient states, and the optimal oxygen content of the soil in the main root zones of the oil sunflowers always can be kept; reasonable saline-alkali regulation and control processes are further proposed, salinization and alkalinization improvement can be carried out by the aid of suitable salt washing water volumes and reasonable desulfurization gypsum application amounts, the problem of salification of drip irrigation soil in existing saline-alkali lands can be solved, accordingly, the alkalization degree of the soil can be effectively lowered, and the purpose of improving the soil can be achieved.

The invention discloses a device for evaluating the neuron-like differentiation degree of a PC12 cell. The device consists of a hopping probe ion conductance microscope (HPICM) and a patch clamp system. An evaluating method comprises the following steps of: obtaining a glass microprobe for observing the micro-topography of the PC12 cell with an HPLCM technology; scanning and imaging the surface topographies of living neuron-like PC12 cell at different NGF (Nerve Growth Factor) induced differentiation time points with the HPLCM technology; analyzing the scanning and imaging with image processing software installed in an HPLCM system; obtaining the glass microprobe which is suitable for performing whole cell recording by adopting a patch clamp technology; recording the ion channel current of the living neuron-like PC12 cell under physiological conditions by adopting the patch clamp technology; and computing corresponding inward current and current density by using the ion channel current of the PC12 cell. The invention has the advantages: high operability is achieved by combining the HPLCM technology with the patch clamp technology, and the neuron-like differentiation degree of the PC12 cell can be qualitatively, quantitatively and comprehensively analyzed and evaluated more accurately on the aspects of structures and functions.

A seal ring arrangement generally includes a pair of opposed seal rings which define a shaft seal to prevent leakage along the shaft of rotary equipment. A seal face treatment process has been developed using seal ring machining equipment which has a laser unit that forms micro-topography depth features in the seal face and then performs a material surface treatment process to selectively alter the conductivity of the seal face so as to virtually eliminate electro-corrosion in the seal rings. The seal rings preferably are provided in a conventional combination of a carbide seal ring material for one of the seal rings and a silicon carbide material for the other seal ring. The laser machining and the laser treatment processes are preferably applied to the silicon carbide material.

The invention provides a high-frequency fatigue testing device and a micro-topography observing device.The high-frequency fatigue testing device comprises two collets (11) and a driving system.The two collets (11) are arranged in a certain-distance mode; a test sample (10) can be fixed between the two collets (11); the driving system can drive the two collets (11) to perform simple harmonic motion in the connecting direction between the two collets (11), and comprises a motor (13).The high-frequency fatigue testing device is simple in structure, capable of testing samples with multiple sizes, high in adaptability, compact in space structure and convenient to observe.The high-frequency fatigue testing device can be further matched with a microscopy imaging instrument (such as a scanning electron microscope (SEM) and an optical microscope (OM)) to form the micro-topography observing device, and therefore a tested piece is subjected to an in-situ micro-nano fatigue mechanical performance test.

The invention discloses a water quality purification and water ecological restoration method of a polluted municipal internal lake. The method disclosed by the invention comprises the following steps:1) setting a rain and sewage pre-treatment purification region at a a location where an along-river rainwater outlet or a mixed discharging sewage overflowing opening of an into-lake river channel isconverged with a river channel; 2) carrying out micro-topography water ecology construction in the lake, wherein the micro-topography water ecology construction comprises the step of sequentially constructing a shallow-water submerged plant recovery region, a gentle slope transition region and a deep water regulation and storage region from a lakeside to the middle of the lake; planting submergedplants into the submerged plant recovery region; 3) arranging a circulating water pump in the middle of the lake or the deep water regulation and storage region and arranging a circulating pipeline at the bottom of the lake. The water quality purification and water ecological restoration method of the polluted municipal internal lake is applicable to environment management on pipe network overflowing polluted and town surface runoff polluted municipal internal lake water with a high into-lake load and can be used for remarkably improving the water quality of the lake, reducing the eutrophication degree of the lake and recovering a water ecological landscape.

There is provided a thermal transfer reception sheet having at least one side of sheet-shaped support body on which an intermediate layer having hollow particles and an image reception layer are successively formed. The hollow particles have an average particle diameter of 0.2 to 30 [mu]m, and volume hollow ratio of 40 to 95%. Furthermore, the printing smoothness (Rp value) measured after 10 m sec after start of pressurizing the image reception layer surface with a pressure of 0.1 MPa by using the micro-topography is not greater than 1.5 [mu]m. The 20-degree gloss based on JIS Z 8741 is 80 or below.

The invention discloses a dual-varying-slope erosion groove and interflow determining instrument and a determining method thereof. A model fixing support formed by welding a lower soil erosion groove, an upper soil erosion groove and a steel frame is arranged, and the upper and lower bottom ends of the model fixing support are each connected with a lifting device. The upper soil erosion groove and the lower soil erosion groove are connected through a plastic transition belt. The soil erosion groove is divided into a left part and a right part through a soil erosion groove partition plate, and the lower soil erosion groove is connected with an interflow collector and a surface flow collector. The invention further relates to the determining method adopting the dual-varying-slope erosion groove and interflow determining instrument in the soil water erosion process; by adopting the instrument, slope surface micro-topographies of different concave-convex forms can be constructed; by determining interflow, surface flow, sediment, slope surface erosion morphology, the number and sizes of rills and other important parameters, quantitative analysis can be performed on the rules of occurrence and development of soil water erosion in the whole precipitation process, and the application range is wide.

The invention relates to a method for detecting the surface topography of the aluminum electrode foil of an electrolytic capacitor, comprising the steps that mechanical polish-grinding and solution polishing is conducted by alkaline solution and/or acid polishing slurry, after a polish-formed foil is obtained, the foil is put under an electron microscope to be photographed, and an electron microscope image displaying micro holes and an alumina membrane structure are obtained. By using the detecting method of the invention, clear intuitive photos of the micro topography of the electrode foil can be completely obtained, a direct basis for analyzing the influencing factors of the specific volume of the electrode foil accurately and quantitatively is provided, and therefore, reliable experimental data and guidance are provided for deeply researching and developing the technology of the electrolytic capacitor and process control on actual production lines.

The invention discloses a method for determining ductile-regime grinding of a hard and brittle material based on brittle removal proportionality coefficients and surface roughness, and belongs to thetechnical field of grinding of hard and brittle materials. 100 sample areas S<c> are selected as observation units on the grinding surface of the hard and brittle material, the surface area S of each observation unit is measured, the average value of the 100 observation units is taken as S<k> value of the grinding surface, the surface roughnesses S of the 100 sample areas are measured, theaverage value of the surface roughnesses S of the 100 sample areas is calculated as the surface roughness S of the grinding machining surface, and if both S<k><10% and S<0.01 [mu]m are met, it is considered that ductile-regime grinding of the hard and brittle material is achieved. According to the method for determining ductile-regime grinding of the hard and brittle material based on thebrittle removal proportionality coefficients and surface roughness, whether the ductile-regime grinding of the grinding surface of the hard and brittle material is reached can be accurately determined, and the limitation of low credibility due to the fact that an existing determination method only relies on a micro-topography photo of the grinding machining surface is overcome.

The invention particularly relates to a feature recognition method and device of asphalt road pavement micro-topography based on micro-vision. The technical scheme of the feature recognition method and device of the asphalt road pavement micro-topography based on the micro-vision consists of the feature recognition device of the asphalt road pavement micro-topography based on the micro-vision and the recognition method of the asphalt road pavement micro-topography based on the micro-vision. The structure of the feature recognition device of the asphalt road pavement micro-topography based on the micro-vision is that a micro-amplification lens (2) is perpendicularly arranged at the left end of an upper support of a support (6), and the tail portion of the micro-amplification lens (2) is connected with a CCD (Charge Coupled Device) camera (1); and an automatic object stage (5) is arranged right below the micro-amplification lens (2), a linear array laser (3) is arranged on an oblique support, the point of intersection of the center line of the installed linear array laser (3) and the center line of the micro-amplification lens (2) is located at a position 2 cm above the automatic object stage (5). Feature recognition software of the asphalt road pavement micro-topography is arranged in a computer (8). The feature recognition method and device of the asphalt road pavement micro-topography based on the micro-vision has the advantages of automation, high accuracy and three-dimensional visualization.

The invention relates to a transmission line tower lightning strike warning method based on a neighborhood maintenance embedding algorithm, and belongs to the field of transmission line safety monitoring. According to the micro-topography and micro-meteorological information of the transmission line pole tower, such as the elevation of the pole tower, the calling height, the meteorology, the topography and geomorphology of the pole tower, the circumference situation of the pole tower 50m, the soil condition and the like, the implicit local model information is extracted by using the neighborhood preservation embedding algorithm (NPE). Before modeling, the data should be collected and sorted. For the existing historical micrometeorology, microtopography and tower ontology of transmission line corridor, the description of literal data in the information literature should be transformed into numerical data and stored in the database for historical data modeling by setting specifications.In the real-time monitoring, the newly acquired micro-meteorological data are stored in the database and micro-terrain after being processed by the above specifications, and the tower body data are used by the on-line monitoring module for processing.

The invention provides a micro powder diamond grinding wheel abrasive particle abrasion quantitative measurement representation method. The method comprises the following steps: 1) obtaining the micro-topographies of different positions on the surface of a grinding wheel in an abrasion state; 2) obtaining an image RGB matrix; 3) removing glitch noise in the image; 4) performing image enhancement by using differential operation; 5) extracting an area corresponding to the abrasive particles in the image; 6) binarizing the whole image; 7) obtaining the number of the abrasive particles and the projected area data of the abrasive particles; 8 ) dividing the number of the abrasive particles by the total area of an micro-topography image to obtain the abrasive particles distribution density; and 9) calculating average abrasion area of the projected area data of the abrasive particles according to normal distribution. The method uses noncontact measurement, avoids a measurement error caused by probe abrasion during contact measurement, extracts the number of an abrasive particle abrasive plane and projected area information, and quantitatively represents the different abrasion state of the grinding wheel.

The invention discloses an underwater laser scanning reconstruction system based on a manned submersible and a method thereof. The system comprises a blue laser, a CCD camera, a control unit, an imageprocessing unit, a manned submersible attitude information acquisition unit and a data fusion unit. The blue laser and CCD camera are connected with the control unit. The input end of the image processing unit is connected with the control unit, and the output end of the image processing unit is connected with the data fusion unit. The data fusion unit fuses the coordinate information of pixel points and attitude information of manned submersible vehicle sent by the image processing unit so as to realize the accurate three-dimensional reconstruction. As the laser is taken as a starting point,laser line light source and image processing technology are used, at the same time, it can greatly reduce the influence of laser scattering and refraction phenomena on detection. At the same time, itcan realize the precise detection of submarine micro-topography by data fusion with attitude sensor of manned submersible. It can be widely used in military and scientific research fields.

The invention provides a method for synthesizing a groove-shaped MoO3 material. The method comprises the following steps: sequentially adding a molybdenum salt, 2-methylimidazole, dicyandiamide and PVP (Polyvinyl Pyrrolidone) into a mixed solvent of ethanol, DMF (Dimethyl Formamide) and triethylamine, and stirring to obtain a spinning solution; preparing precursor fibers by adopting electrostaticspinning; and finally, calcining the obtained precursor fibers under air conditions at a high temperature, thereby obtaining the product. The reasonable precursor spinning solution system and electrostatic spinning parameters are designed, and the obtained product is special in micro topography, excellent in repeatability and high in purity. Moreover, the preparation process is simple and convenient, actual production is facilitated, and the product has excellent application prospects in the fields such as catalysis, adsorption, gas sensitization and the like.

The invention relates to a method for strengthening in-situ remediation of polluted water bodies in riverways and lakes by transgenic plants. The method is characterized by comprising the steps that 1, in view of the characteristics of difficulty in the growth of conventional plants in moderately and slightly polluted water bodies, eutrophic elements and heavy metal elements in the water bodies are transferred and fixed into bottom sediment by the transgenic plants with high adsorption efficiency and high resistance; and 2, through micro-topography transformation combing with plant configuration, polluted river sections and lake landform landscape are divided, erosion zones and sedimentary zones are artificially constructed, the initial conditions of transgenic plant growth are guaranteed,and the repair efficiency of the polluted river water bodies is improved. The method has the advantages such as high adaptability and environmental friendliness in strengthening the in-situ remediation of the polluted water bodies in the riverways and lakes, and has wide application prospects.