812results about How to "Non-destructive" patented technology

The invention discloses a restoration agent for lowering cadmium/lead effective state content in soil, which is composed of quicklime, calcium sulfate, wood charcoal, iron chloride and water, wherein the weight ratio of the quicklime, calcium sulfate, wood charcoal and iron chloride is (1-2):(1-2):(1-2):(0.5-1), and the water accounts for 30-45 wt% of the soil. The restoration agent can be used for treating heavily polluted soil; and common chemical passivators can only restore lightly polluted soil, and do not have obvious effect on heavy pollution. The restoration agent can be used for treating both acidic soil and neutral soil. The restoration agent has high remediation efficiency for cadmium polluted soil; the reaction mechanisms relate to chemical precipitation and physical adsorption; and when one action fails due to change of the outside conditions, the other action can perform the guarantee function. The restoration agent has certain control actions on the lead effective state content in the polluted soil.

The invention discloses an adsorption method for preparing hydroxyapatite pesticide and slow-release fertilizer compound, which comprises the following steps: soaking a nano hydroxyapatite carrier in phosphate buffer solution, then adding a starting material into the buffer solution and continuously stirring the mixture to form compound solution, finally centrifuging the compound solution to obtain sediment, and drying the sediment to obtain the compound. By using a porous structure of the nano hydroxyapatite self to embed medicaments into an internal grid of the carrier, the burst effect of the medicaments is avoided, the medicinal effect is long, the medicament residue is greatly reduced, and the medicaments are safer. A product obtained by using the nano hydroxyapatite as a pesticide and fertilizer carrier has the advantages of reliable quality, strong stability, safe use and low cost, greatly improves the medicament loading amount and adsorption amount, is easy for continuous production, and has good application prospect.

The invention discloses a spectral image-based meat quality visual non-contact detection method. By means of spatial distribution information and spectral characteristic information which are contained in a spectral image and reflect the characteristics of an object to be detected, multiple indexes of meat quality (such as water content, water activity, volatile basic nitrogen, meat color, microorganism counts, acid value and pH value) are respectively or comprehensively evaluated, and evaluation results are given in an image mode according to spatial distribution conditions of specific indexes in the object to be detected. The method can be used for quick and non-contact inspection of meat production, processing, storage, transportation and marketing links, inspection results are accurate and objective, and the expression mode is intuitive, so that a guarantee means for supervising the production and marketing quality safety of meat is provided.

A method for analysing a chemical substance containing quadrupolar nuclei to determine a measurable characteristic of the substance. The method includes irradiating the substance with RF energy in a prescribed manner to stimulate NQR of certain quadrupolar nuclei within the substance. Then receiving and processing a signal emitted from the substance to isolate an NQR signal therefrom. Thereafter analysing the NQR signal to obtain a measure of the characteristic of the substance; and providing an output indicative of the measure for analytical purposes. Specific methods for analysing a chemical substance during production thereof to determine a characteristic of the substance indicative of the quality thereof, and for searching for chemicals together with specific systems are also described.

The invention discloses a method for measuring the thermal resistance of a multi-layer heat-conducting material, which relates to the field of testing, and can be used for measuring the thermal resistance of each material layer in the multi-layer heat-conducting material. A semiconductor device in a testing system has a heat source function and a testing function. The method comprises the following steps of: fixing the semiconductor device on the upper surface of the multi-layer heat-conducting material, and fixing the lower surface of the multi-layer heat-conducting material on a constant temperature platform; and applying operating current to the semiconductor device for a period of time at any moment, removing the operating current after a steady state is achieved, and measuring a change curve of the junction temperature of the semiconductor device along with the time under the testing current. Because the thermal resistance, thermal capacity and heat transfer rate of each material layer in the multi-layer heat-conducting material are different, the thermal resistance and thermal capacity of each heat-conducting material layer are reflected through the measured change curve of the junction temperature of the semiconductor device along with the time; and according to a structure function method, the thermal resistance composition in each material layer in the multi-layer heat-conducting material is calculated. Moreover, the method belongs to non-destructive testing.

The invention discloses a melon and fruit picking device and a picking method thereof, which relate to the technical field of agricultural equipment. The melon and fruit picking device comprises a clamping device, a cutting device and a control device, wherein the clamping device comprises a step motor, a driven gear, a left support swinging rod, a left finger, a driving gear, a right support swinging rod, a right finger and supporting blocks, the supporting blocks are arranged under the left finger and the right finger, the driving gear and the step motor are connected, the driving gear and the driven gear are connected through a gear pair, the left finger is arranged at the end parts of the left support swinging rod and the driven gear, the right finger is arranged at the end parts of the right support swinging rod and the driving gear, the cutting device comprises a cutter, a swinging air cylinder and an electromagnetic reversing valve, the cutter is arranged on an output shaft of the swinging air cylinder, the electromagnetic reversing valve is arranged on the swinging air cylinder, the swinging air cylinder is arranged on a cutter frame, and the cutter frame is arranged on a back seat vertically and fixedly arranged on a base. The melon and fruit picking device and the method can be used for automatically picking melons and fruits, and a large amount of time and labor canbe saved for laborers.

The invention discloses a novel material S-CrPbCd for repairing heavy metal Cr-Pb-Cd contaminated soil as well as a preparation method and a using method of the novel material S-CrPbCd. The material comprises 5-15 percent of modified carbon nano tube, 10-60 percent of modified clay mineral and 20-60 percent of quicklime. The S-CrPbCd can efficiently adsorb Pb, Cd and Cr in the soil, and does not obviously change the soil property and cultivability. The S-CrPbCd enables the residue amount of Pb, Cd and Cr in sensitive crops to be reduced to 75-90 percent within 1-2 months, and meanwhile, the material has the characteristics of low cost, simple preparation process, no secondary pollution, quick action and easiness in large-area popularization.

The invention applies techniques for image reconstruction from X-ray diffraction patterns on the three-dimensional imaging of defects in EUVL multilayer films. The reconstructed image gives information about the out-of-plane position and the diffraction strength of the defect. The positional information can be used to select the correct defect repair technique. This invention enables the fabrication of defect-free (since repaired) X-ray Mo—Si multilayer mirrors. Repairing Mo—Si multilayer-film defects on mask blanks is a key for the commercial success of EUVL. It is known that particles are added to the Mo—Si multilayer film during the fabrication process. There is a large effort to reduce this contamination, but results are not sufficient, and defects continue to be a major mask yield limiter. All suggested repair strategies need to know the out-of-plane position of the defects in the multilayer.

The acidifying agent as fodder additive is compounded with several kinds of organic acid with lactic acid as main component and/or organic acid salt, and features that it has total organic acid amount of 45-53 wt% and silica hydrate as carrier. The acidifying agent has good compatibility and strong acidifying effect, and its coated product has no corrosion and harm, and no destruction to protein and vitamins and may be mixed well with various feed components.

The invention relates to a method for preparing modified biomass charcoal for passivating lead and cadmium in soil. The method comprises the following steps: A, grinding and screening biomass raw materials; B, respectively dissolving FeSO4.7H2O and KMnO4 in water, uniformly mixing, regulating the pH value to 7, thus obtaining iron and manganese oxide suspension; C, adding the ground biomass raw materials into the iron and manganese oxide suspension, uniformly stirring, soaking, drying at the temperature of 105 DEG C for 6 hours, thus obtaining a biomass material loaded with iron and manganese oxides; and D, adding the biomass material loaded with iron and manganese oxides into a reactor, raising the temperature to 450-650 DEG C under oxygen-limited conditions, carrying out a pyrolysis carbonization reaction, thus obtaining the modified biomass charcoal. According to the method disclosed by the invention, the iron and manganese oxides are distributed in the surface and pores of the biomass charcoal, a passivation effect of the biomass charcoal on heavy metals lead and cadmium can be obviously improved, the environmental benefits of the biomass charcoal for treating contaminated soil are effectively improved, and the remediation cost of heavy metal contaminated soil also can be effectively reduced.

The invention provides a method and device for recovering deleted data in the SQLite. The method includes the steps that a B+tree type main tree and a WAL file which correspond to a data sheet are read from the SQLite; the WAL file is divided into a plurality of page sets according to imperative statements; a first unread page set is read and marked as read and is marked as a first page set; if the first page set is not empty, a second page set related to the main tree is extracted from the first page set; if the second page set is not empty, the second page set and related pages form a B+tree type second subtree; if the second subtree is not empty, a first subtree, corresponding to the second subtree, in the main tree is obtained, and whether the second subtree is in a data deleting type or not is judged; if the second subtree is in the data deleting type, first original data deficient in the first subtree are found according to the second subtree, and data recovering can be carried out on the deleted data corresponding to the first original data in a preset mode conveniently. By means of the method, the data recovery accuracy rate and the data recovery comprehensiveness can be improved.

A device for disassembling a waste circuit board comprises a shell, an electric heater and a fan, which is characterized in that an internal heating space of the device is equipped with a rotatable rotary barrel for placing the waste and old circuit board, and the barrel wall of the rotary barrel is provided with a mesh hole which can be passed by an element. The device can realize the purpose of the automatic disassembly of the waste and old circuit board. The device has the advantages that: compared with the manual disassembly and washing, the efficiency is greatly improved; as the temperature of hot wind of the internal heating space of the device is adjustable and controllable, the set temperature of the hot wind can not only melt a tin point, but also not cause the decomposition of the PCB board and the paint, thus greatly reducing the generation of waste gas; as the internal heating space of the device is near to the closed state when in work, the hot wind is recycled, which can not only save the energy, but can also further reduce the emission of the waste gas to the air.

The invention discloses an ultrasonic detection method of scale thickness in a pipeline. The method comprises the following steps of: utilizing double incidences of ultrasonic waves at different angles, establishing simultaneous equations on the basis of propagation velocities of the known ultrasonic wave on the pipe wall and in the filled fluid and the relationship between an incident angle and a refraction angle of the ultrasonic wave by measuring the penetration time of the ultrasonic waves in the pipeline filled with fluid during the double incidences, and further calculating the velocity and the thickness of a scale layer in the pipeline. With the method, the scale thickness can be measured under the condition that the scale characteristic is unknown, the working detection of the pipeline can be achieved, and the method has reliable accuracy and no destructive effect.

The invention relates to a digital holographic three-dimensional appearance detecting device based on multiple wavelengths. The device carries out surface appearance measurement on the surface of a three-dimensional object by adopting the multiple wavelengths through a digital holographic method. In an optical path structure, the object to be measured is illuminated by planar optical waves, reflected object light is collected, and the included angle between reference light and the object light is controlled through a light beam deflector to achieve off-axis digital holography. In order to enlarge the measurement range while the observation resolution ratio is ensured, the object to be measured can be measured through light beams with the different wavelengths, obtained holographic spectrograms are processed in a subtractive iteration mode, and then three-dimensional appearance information of the object which is to be measured and free of phase position wrapping is obtained. Due to an integrated optical platform, all the optical elements are compact in layout structure, flexible to use and stable, and the detecting device can be used for observing three-dimensional appearances of optical elements large in height and high in accuracy and roughness and mechanical assemblies including mechanical rotors and the like on line.

The invention relates to an absorption type vehicle-mounted air conditioning system using exhaust gas waste heat of an automobile engine and a coolant of the engine as thermal power sources, which belongs to the field of air conditioning systems. At present, the vehicle-mounted air conditioning systems of public buses and large tourism passenger vehicles generally have extremely high oil consumption and tail gas emission and extremely serious energy waste and environmental pollution. In the vehicle-mounted air conditioning system, water is used as a refrigerant, and lithium bromide solution is used as an absorbent, so that the absorption type vehicle-mounted air conditioning system is nontoxic and flavorless, and does not have harm to human bodies or damaging effects on the atmospheric ozone layer. The heat of the tail gas waste heat of the engine and the coolant of the engine is used as the power sources of the vehicle-mounted air conditioning system, so that the fuel oil consumptionis lowered, the operating cost of the public buses or large tourism buses is reduced, the emission load of automobile tail gas is effectively lowered, and ideas of energy conservation and environmentfriendliness are truly realized.

The invention discloses a method for quickly and non-destructively detecting variety, sugar degree and acidity of an apple, and belongs to the technical field of food detection. The method disclosed by the invention comprises the following steps: acquiring a near infrared spectrum of an apple sample, and simultaneously, respectively detecting the sugar degree and the acidity of the apple through a handheld refraction sugar degree meter and a pen type pH meter; then, performing dimension reduction processing on the pre-processed apple spectrum data with a principal component analysis method, and optimizing by using a genetic algorithm; finally, classifying with a BP neural network method, and finally, determining an optimal prediction model through repeated verification. According to the BP neural network-based prediction model established by the invention, the variety, the sugar degree and the acidity of the apple can be predicted very well. In a conventional method, the apple is required to be damaged, so that the conventional method is destructive detection; moreover, the sugar degree and the acidity are required to be detected respectively; the variety of the apple cannot be detected through a suitable method. The method has the advantages of non-destructiveness, quickness, low cost, no sample pre-treatment, no chemical reagent, no pollution and the like; moreover, the variety, the sugar degree and the acidity of the apple can be predicted simultaneously.

The invention discloses a metering-level 3D super-depth-of-field microscopy system and a detection method, and relates to the technical field of photoelectric nondestructive 3D detection. The microscopic system comprises an optical microscope, a spectral confocal sensor or a white light interference sensor, an xyz-axis electric displacement platform, a control module and a PC processor. The xyz-axis electric displacement platform comprises an xy-axis translation platform and a z-axis lifting module; the optical microscope is provided with an illumination light source and an image acquisition unit, the control module comprises an xyz electric control unit, a processor connected with the spectral confocal sensor or the white light interference sensor and a power supply module, and the imageacquisition unit is used for acquiring image information of a target detection area and transmitting the image information to the PC processor; by implementing the technical scheme, a sample can be observed in a nondestructive manner, photographing, 3D true color imaging and 3D accurate measurement can be performed on the microscopic state of the surface of a material in an ultra-large area, the measurement-level detection precision is realized, the details and the real color of the microscopic sample are kept, and the method has a good application prospect.