47results about How to "Rapid sample preparation" patented technology

The invention relates to a buffing device, in particular to a grinder with a vessel for filling grinded material. The concrete powder grinder comprises a bracket; a motor is arranged on the bracket, a buffing tablet is fixedly connected with the rotating shaft of the motor, a test specimen holding device is arranged opposite to the buffing tablet. The buffing device has the advantages of convenient operation, improvement of the sample preparation precision of the concrete powder sample preparation precision; improvement of the manufacture efficiency of the concrete powder through utilizing motor; and high work efficiency, high precision of powder sample manufacture, resources saving, and realization of the fast sample preparation of the powder sample for use of various chemical analysis.

The invention discloses a three-dimensional (3D) printing method for a cathode, an anode and an electrolyte of a battery. According to the method, the cathode, the anode and the electrolyte of the battery are printed in a 3D manner, and a battery core is formed through lamination. According to the method, the cathode, the anode and the electrolyte of the battery are printed in the 3D manner, and the battery core is formed through lamination, so that the production of new products is carried out without adjusting the production parameters of machines on the production line, the production cycle is short, sample preparation can be completed within 24 hours, the sample preparation cost is low, the design is flexible, the rate of development is high, and different design samples can be quickly manufactured.

This invention relates to the use of thermophilic proteases in combination with mesophilic enzymes, including such use in improved methods for isolation, purification, diagnostic, analytical and manufacturing techniques. In particular, the uses and methods of the invention will facilitate improved purification, diagnostic, analytical and manufacturing techniques, especially those in the field of molecular biology, by providing means of removing contamination and/or undesired constituents, and/or by simplifying the techniques.

The invention discloses a sampling device for a laboratory test of sludge solidification treatment and a sampling method thereof. The sampling device is used for static pressure sampling, compaction sampling and desampling and mainly comprises a jack, a fixed bracket, a base, a lower clamping ring, an upper clamping ring, a splitting die, a die protecting device, a force transferring guide rod, a counterforce top plate and a compaction hammer. The sampling method is used for performing the static pressure sampling, the compaction sampling and the desampling by utilizing the device. According to the sampling device and the sampling method, uniform standard samples can be quickly prepared, the operation is simple, rapid, convenient and practical, an experimental basis can be provided for the research on physical and mechanical properties after the solidification treatment is performed on a large amount of sludge, and the sampling device and the sampling method can be popularized in the technical field of soil tests.

The invention relates to a method for preparing a composite interlaminar shear strength spline, and belongs to the field of testing of composites. The method comprises the following steps: a), calculating the number of carbon fiber needed according to the specification of the carbon fiber and the content of fibers in the composite spline and; b), weighing and preparing proper amount of epoxy resinglue solution, hot-melting the epoxy resin glue solution in an oven to transparent; c) putting the carbon fiber on an uncoiling stand, guiding into a glue dipping tank, pouring the hot-melted epoxy resin glue solution into the glue dipping tank, immersing the fiber, winding corresponding number of the fibers dipped with the glue solution on a winding plate; d) taking off the fiber dipped with theglue solution on the winding plate by using a blade, folding symmetrically by three times, straightly putting into a groove of a mould tank body, wherein groove is preheated in the oven and is evenlycoated with a releasing agent; e) putting the fiber and the tank body together into the oven of 140 DEG C, heating for 60 minutes, taking out the mould tank body when the glue solution is hardened, putting back into the oven of 140 DEG C again, continuing to heat for 60-90 minutes, taking out and then applying the pressure of 150-280 N.m again, solidifying in the oven of 160 DEG C for 2-4 hours,cooling, demoulding, and cutting into the testing spline at the desired size.

The invention relates to a hollow sample making device, comprising a pressure head mechanism, two transmission mechanisms and a controller, wherein the pressure head mechanism is composed of an upper die head, a lower die head and an outer die; the transmission shafts of the two transmission mechanisms are connected with a screw rod in a symmetrical manner; the screw rod is connected with nut pieces which respectively fasten the lower die head and the upper die head by bolts; the nut piece is provided with a position sensor; and the transmission mechanism and the position sensor are connected with the controller via cables. In the invention, a bidirectional compaction structure in which the upper and lower die heads simultaneously apply pressure on the outer die is adopted in the sample making process; and a die adopts an embedded die cavity structure, and the size and model of the die can be changed according to the samples. The sample making device in the invention has scientific design, simple structure, convenient operation and use and high cost performance, and fundamentally solves the difficult problems of scale material feeding and automatic demoulding in the preparation process of making samples, thus realizing mechanical operation and batch production and having the advantages of rapidness, efficiency, low cost, good sample repeatability and strong comparability; and in addition, the sample making device can make samples in the geotechnical detection field, and popularizes preparation for various test samples similar to ground.

The invention discloses a method for accurately and quickly detecting manganese content in a nitridation reinforcer. The method comprises the following steps: pulverizing a test sample, weighing 0.2000g of test sample, evenly mixing with 10ml of 1.42 g/ml nitric acid, 12.0ml of 1.70 g/ml phosphoric acid and 5 drops of 1.15 g/ml hydrofluoric acid, heating to 80-100 DEG C until the test sample is completely dissolved, cooling for 2-3 minutes, adding 2.0ml of 1.67 g/ml perchloric acid into the obtained test solution, heating until small bubbles on the liquid level disappear, cooling to 70-80 DEG C, adding 50ml of water until the reaction salts are sufficiently dissolved, cooling to room temperature, titrating the test solution with a 0.03980-0.0400 mol/L ammonium ferrous sulfate standard solution until the solution turns pink, adding 5 drops of 2 g/L N-phenyl anthranilic acid solution, continuing titrating until the solution becomes brilliant green to reach the end point, and recording the volume of the consumed ammonium ferrous sulfate standard solution. The manganese content is calculated according to the following formula. The method can implement quick detection on the manganese content in the nitridation reinforcer, and has the advantages of accurate, stable and reliable detection result and high popularization and application value.

In an apparatus for determining fibre lengths and fibre length distribution from a fibre material sample, especially in spinning preparation, collected fibre material is automatically conveyable by a conveyor device, is arranged to be supplied to a take-up device that grips it, is separable from the conveyor device and transportable to at least one rotating combing device, each end region of the collected fibre material protruding from the take-up device being combable by combing device, and subsequently detectable by a measuring device. The apparatus permits within a short time a sample preparation founded on a uniform basis and an accurate measurement of the samples.

The invention discloses a method for detecting the shear strength of clayey soil through a large on-site direct shear test device. The method comprises the following steps that firstly, a test site is flattened, and a sample with the same size as a sample box is obtained by cutting; secondly, a force bearing frame base is placed and anchored; thirdly, a lateral force-measurement jack and a lateral displacement dial gauge are arranged, an initial value of the lateral displacement dial gauge is recorded, the lateral force-measurement jack is connected with a lateral hydraulic pump through a lateral pressure gauge, and a pointer of the lateral pressure gauge returns to zero; fourthly, lateral loads are applied continuously in a graded mode, lateral displacement and lateral pressure values are recorded, and deformation situations of the soil around the test box are observed; fifthly, after multiple direct shear tests under different types of pressure are finished, a shear stress-lateral displacement relation curve chart is drawn, and shear stress is determined. The method has the advantages of being convenient to implement, capable of effectively and truly obtaining data of the shear strength of the clayey soil and applicable to various sites, and can be widely applied to the technical field of clayey soil detection.

The invention belongs to the technical field of membrane preparation and particularly relates to a method and a device for preparing a lipid bilayer membrane in situ in a liquid phase. Different from the common vesicle fusion method, the in-situ high-temperature vesicle fusion method adopted by the invention is characterized in that: 1, a sample introduction device is designed by combining an atomic force microscope (AFM) liquid tank needle holder to prepare a bilayer membrane in situ on a sample table; and 2, the fusion process is implemented at the temperature higher than a room temperature, so the process is accelerated. The formed bilayer membrane can be used for the observation of and study on an atomic force microscope (AFM). The method not only enables the forming process and surface topography of the membrane to be monitored by the atomic force microscope in real time, but also can change the liquid-phase environment of the membrane in situ by controlling the sample introduction device so as to control chemical and physical adsorption, chemical reactions, crystal growth and the like on the surface of the membrane. The method also can be used for preparing and modifying other amphiphilic membranes.

The invention provides a mid-infrared spectrum identification method of adulterated pearl powder. The method comprises the step of qualitatively and quantitatively analyzing the suspected adulterated shell powder, calcium carbonate powder and talcum powder in the to-be-tested pearl powder by use of the Fourier transform infrared spectrum. The basic principle of the identification method is as follows: the calcium carbonate in the pearl powder is an aragonite type, and the calcium carbonate in the calcium carbonate powder is a calcite type; after the shell powder is calcined at the specific temperature, the calcium carbonate of the aragonite type is completely transformed to the calcium carbonate of the calcite type, and the calcium carbonate in the calcined pearl powder is still remained in the aragonite type; furthermore, the main ingredient of the talcum powder is magnesium silicate, the Si-O stretching vibration absorption peak of the magnesium silicate is located in the infrared region, and is obviously different from the feature peak of the pearl powder. The mid-infrared spectrum identification method of the adulterated pearl powder provided by the invention has the advantages of being fast in sample manufacturing, simple in analysis operation, convenient and fast, small in error, and low in cost; therefore, the method has the excellent scientific research value and the market value.

The invention discloses a method for preparing a TEM sample through FIB reverse cutting. The method comprises steps that 1, a thin film sample is bonded to a sample table; 2, etching a fourth side surface, far away from the sample table, of the thin film sample by adopting FIB till a pattern structure is exposed; 3, scribing and etching are conducted on the fourth side face through FIB to form twogroove line marks; 4, filling a metal layer in the groove line marks to form metal line marks; step 5, carrying out second etching of on a first side surface corresponding to the long side of the thin film sample by adopting FIB during reverse cutting, wherein the end point position is determined by a corresponding metal wire mark; 6, performing third etching of a second side surface corresponding to the long side of the thin film sample by adopting FIB during reverse cutting, wherein the end point position is determined by a corresponding metal wire mark; and forming a TEM sample by the thinfilm sample after the second etching and the third etching are finished. The method is advantaged in that the thickness of the sample can be quickly judged, and the sample thickness judgment time isgreatly shortened, so the overall sample preparation time is shortened.

The invention discloses a microscopic sample preparation device and a use method thereof. The microscopic sample preparation device comprises a sample pool plate assembly, an agar pouring plate assembly, a dodging assembly, a light filtering assembly, an LED lamp panel, an LED lamp panel fixing frame, ultra-thin glass and a glass pressing ring. The sample cell plate is used for fixing ultra-thin glass and serves as a glass slide in the tablet, and the agar pouring plate is used for manufacturing an agar block for the tablet. The LED lamp panel provides a light source, and the light uniformizing assembly is composed of plano-convex mirrors, so that light rays are more uniform. The light filtering assembly is composed of light filters and can select light with the needed wavelength. All the components are stacked and assembled together in a magnetic attraction mode, and assembling is convenient. The sample preparation process is simple and rapid, is easily mastered by beginners, and can ensure the tabletting effect. The whole device can provide medium-flux sample experiments and can also meet the experimental requirements of optogenetics.

The invention relates to a manufacturing device for sludge solidification test samples and belongs to the technical field of environmental geotechnics.The manufacturing device for the sludge solidification test samples is composed of a storage system, a sample manufacturing system and an intelligent control rack system.A rubber bag is arranged in a piston cavity, a controllable feed port and a controllable discharge port are formed in the rubber bag, and it is guaranteed that no water evaporation or odor diffusion exists in the sample manufacturing process.By means of the mode of vacuum pumping and piston extrusion, it is guaranteed that initial raw materials are uniform and free of air, and sample manufacturing is rapid.A sample injection gun head is combined with a power compression piston controlled by a computer and a bearing table with an inductor, and it is guaranteed that a die cutting ring is tightly and fully filled with solidified sludge in the sample manufacturing process.The problems that more sample manufacturing materials are needed, consumed time is long, the samples are easily disturbed, holes are easily formed, the identity of the samples cannot be guaranteed, sample manufacturing is slow, the smell is heavy in the manufacturing process, and the reproduction of the samples is low are effectively solved through the manufacturing device.