Abstract: A device of nondestructive transfer of liquid drops includes a power generation part and a clamping part. The power generation part includes a movable friction material and at least two fixed friction materials. The clamping part includes a supporting mechanism and a left dielectric wetting splint and a right dielectric wetting splint installed on the supporting mechanism. The movable friction material is connected to the left dielectric wetting splint. The at least two fixed friction materials are connected to the right dielectric wetting splint. Also disclosed are a method of nondestructive transfer of liquid drops and a method of micro-reaction of liquid drops.

Abstract: The present invention discloses a fault diagnosis method under a convergence trend of a center frequency, including: (1) acquiring a dynamic signal x(t) of a rotary machine equipment; (2) setting initial decomposition parameters of a variational model; (3) decomposing the dynamic signal x(t) by using the variational model with the set initial decomposition parameters, and traversing a signal analysis band and performing iterative decomposition on the dynamic signal x(t) under the guidance of a convergence trend of a center frequency, to obtain optimized modals {m1 . . . mn . . . mN} and corresponding center frequencies {?1 . . . ?n . . . ?N}; (4) searching a fault related modal mI, guiding parameter optimization by using a center frequency ?I of the fault related modal mI, and retrieving an optimal target component mI including fault information; and (5) performing envelopment analysis on the optimal target component mI, and diagnosing the rotary machine equipment according to an envelope spectrum.

Abstract: The invention provides a Siniperca chuatsi IL-6 gene and a detection method for a disease-resistant SNP marker. A cDNA sequence of S. chuatsi IL-6 gene is cloned, as shown in SEQ ID NO: 1. A IL-6 gene gDNA sequence containing an intron of the S. chuatsi IL-6 gene is cloned, as shown in SEQ ID NO: 2. A primer for amplifying a disease-resistant SNP locus is designed according to IL-6 gDNA sequence, and S. chuatsi IL-6 gene is amplified to obtain an amplification product which is sequenced, and the SNPs loci relevant to virus disease-resistance are found out and the SNP locus is determined according to DNA peak profile. The IL-6 cDNA full-length sequence and IL-6 gDNA full-length sequence are cloned firstly. The SNP locus relevant to virus disease resistance of S. chuatsi IL-6 gene is detected, thereby providing a new method for breeding of S. chuatsi.

Abstract: An embodiment of the present invention provides a picture processing method in an embedded system. The picture processing method includes: performing a bit setting operation on an input/output register corresponding to a communication GPIO port of a camera module in the embedded system, so as to improve a picture collection speed of the camera module; compressing a collected picture using a preset picture compression algorithm and transmitting the compressed picture to a picture preprocessing unit in the embedded system; and filtering out, by the picture preprocessing unit, a picture background using a preset filtering algorithm to obtain picture features of a target object in the picture. With the picture processing method, requirements for an occupied memory resource are balanced while a picture collection speed and a picture data processing speed are increased.

Abstract: The invention discloses a waterless fiber dyeing method using supercritical carbon dioxide fluid as a medium. Dry fibers are tightly loaded layer by layer in a porous yarn cage. After dyeing, the fibers are cleaned to remove unfixed dyes by an online way, thereby obtaining waterless dyed dry fiber products with good quality. With the supercritical carbon dioxide dyed by a dye, the invention can not only solve the problems of high energy consumption, high discharge, high pollution in the traditional dyeing process, but also obtain better dyeing effect. The invention has a simple process and convenient operation, which can effectively realize dry dyeing processing. The reaction is mild, avoiding the use of a large amount of water, heat and additives in high concentration, which has the features of being high efficiency and environmentally friendly.

Abstract: The invention discloses a mixed Ni(II) complex containing bisoxazoline-derived nitrogen heterocyclic carbene ligand and phosphite ligand and application thereof; the chemical formula of the mixed Ni(II) complex is Ni(NHC)[P(OR)3]X2, wherein R is ethyl or isopropyl, X is bromine or chlorine, and NHC is a bisoxazoline-derived nitrogen heterocyclic carbene ligand. In the presence of magnesium shavings, the mixed Ni(II) complex containing bisoxazoline-derived nitrogen heterocyclic carbene ligand and phosphite ligand of the present invention can catalyze low-activity chlorinated aromatic hydrocarbons and fluorinated aromatic hydrocarbons with chlorinated benzyl compounds, respectively, reductive cross-coupling reaction at a single temperature, generating a diarylmethane compound in one step, providing a new method for the synthesis of diarylmethane compounds.

Abstract: A compact, catadioptric and athermal imaging spectrometer is disclosed. A telecentric light (1) incident from a slit (2) is folded or refracted by an object-side prism (3) to enter a plano-convex lens (4); after being refracted by the plano-convex lens (4) and a meniscus lens (5), and refracted and reflected by a thick catadioptric lens (6), said telecentric light is incident onto a convex grating (7) in the form of a convergent beam; and after said beam is diffracted, spectral division is implemented. The divergent beam is sequentially refracted and reflected by the thick catadioptric lens (6), and refracted by the meniscus lens (5) and the plano-convex lens (4) to enter an image-side prism (8). Said beam is folded or refracted and filtered, and imaged on a focal plane (10) to realize spectral imaging.

Abstract: A multi-chip compatible compiling method includes: extracting common characteristic information of Makefiles; configuring variable attribute information of the Makefiles; obtaining a universal Makefile template for multiple chips according to the common characteristic information and the variable attribute information of the Makefiles; traversing a project to be compiled in the universal Makefile template by a compilation module, recording path information of a dependency file of the project to be compiled, replacing a variable value in the universal Makefile template, and determining automation configuration information of the universal Makefile template; invoking an incremental compilation mechanism of a Make tool according to the automation configuration information of the universal Makefile template to obtain a target Makefile of the project to be compiled; and processing the target Makefile by rule information and pseudo-target tag information in the Makefiles to obtain an executable file generated by co

Abstract: The invention discloses a phosphorus-doped tubular carbon nitride micro-nano material and application thereof in waste gas treatment. Melamine is partially hydrolyzed into cyanuric acid through a phosphorous acid-assisted hydrothermal method to form a melamine-cyanuric acid super molecular precursor; the center of the precursor starts to be pyrolyzed under heating calcination, and thus phosphorus-doped tubular carbon nitride is obtained; the phosphorus-doped tubular carbon nitride and sodium borohydride are mixed and subjected to low-temperature calcination in an inert gas atmosphere, and defect-modified phosphorus-doped tubular carbon nitride is obtained.

Abstract: The invention provides a method for rapid gelation of a silk fibroin solution under physiological conditions. The method comprises steps of: (1) weighing NapFF solid powder into a glass vial and adding ultrapure water; (2) adding a NaOH solution, dissolving and heating for 1-2 min at 70° C. to form a transparent solution; (3) slowly adding a HCl solution and stirring until the pH is 7.2-7.5; (4) adding a silk fibroin solution; (5) adding ultrapure water to set the volume to 200 ?L; and (6) standing horizontally, and observing the gelation process by tilting and inverting the glass vial. In the invention a low concentration of silk fibroin solution can be induced to rapidly gelate in a short time. The silk fibroin gel can be degraded by proteolytic hydrolysis in human body, has no toxic side effects, has good biocompatibility, and thus can be used as a good biomaterial.

Abstract: The present invention relates to a waterless fiber dyeing method using a mixed fluid medium, in which supercritical carbon dioxide fluid medium is mixed with steam to form a mixed fluid medium, so that the waterless fiber dyeing effect to natural fibers is improved. The method of the invention can effectively modify the hydrophobic supercritical carbon dioxide fluid medium and improve the polarity thereof, thereby increasing the solubility of polar dye under the dyeing condition and simultaneously expanding the fiber. Thus, the present invention significantly improves the dyeability and dyeing behavior of the hydrophilic fibers in supercritical carbon dioxide fluids. The invention has the advantages of simple process, convenient operation and low energy consumption, and avoids consuming a large amount of water resources and discharging pollutants in the traditional process, and has the characteristics of environmentally friendly and high efficiency.

Abstract: Provided is a FeCrCuTiV high-entropy alloy powder for laser melting deposition manufacturing and a preparation method thereof, in percent by weight, the composition of the high-entropy alloy powder is: chromium 17-20%; copper 22-25%; titanium 16-19%; vanadium 17-20%; and ferrum 19-22%, wherein by utilizing the solid solution effect of alloying elements such as Ti, V and Cu of the high-entropy alloy, it can effectively alleviate the differences in thermal expansion coefficient, melting point, elastic modulus, etc. of the tungsten/steel or tungsten/copper heterogeneous interface, can reduce the residual stress level at the heterogeneous interface during the laser melting deposition manufacturing process and avoid the precipitation of Laves phase, and can meet the manufacturing requirements of tungsten/steel and tungsten/copper heterogeneous components for fusion reactors.

Abstract: The invention provides a compound-pendulum up-conversion wave energy harvesting apparatus, comprising a shell floating on the water surface and swinging with fluctuation of waves, a compound-pendulum mechanism rotatably arranged in the shell and rotating with its swinging, a driving gear rotatably arranged in the shell and rotating synchronously with the compound-pendulum mechanism, an electromagnetic power generation mechanism arranged in the shell and configured to be meshed with the driving gear for transmission to generate electricity through electromagnetic induction, and a piezoelectric power generation mechanism arranged in the shell and configured to be deformed during its rotation to generate electricity through piezoelectric effect. When the shell swings un-directionally with fluctuation of the waves, the compound-pendulum mechanism makes un-directional rotation that adapts to the dynamic changes of water surface wave energy.

Abstract: The invention discloses a double-tank oxidation pond for evaluating catalytic ozonation efficiency, comprising detachable tank bodies made of organic glass, movable ozone aeration pipes and sampling holes. Each tank body has three sections. The height of ozone aeration tube and the number of the holes can be adjusted. The holes are distributed at different positions of the tank bodies for real-time in-situ sampling. It is easy to observe the distribution profile of the gas, liquid and solid phases in the tank bodies. The square double-tank structure is similar to actual production process, and thus the experimental data is easy for computer simulation to enlarge to the actual production process. The size of the ozone aeration pipe and the position of holes in the tank can be adjusted to evaluate the catalytic ozonation effect of sewage treated by different aeration ways and aeration heights.

Abstract: The invention discloses a functional electrical stimulation device including a headset, an electrical stimulation patch, an LED display screen, a circuit board, a rechargeable battery and a wireless terminal, and a method for using same. Two headphone bodies are symmetrically disposed on the headset, the circuit board and rechargeable battery are respectively mounted on the headphone bodies, and a music control button and an electrical stimulation mode and time control button are mounted on the two headphone bodies respectively. Two electrical stimulation patches are mounted on a middle portion of the headset, two LED display screens are respectively mounted on the two electrical stimulation patches. An audio decoder chip, a button control module, a power switch, an electrical stimulation generation module, a wireless communications module and a charging port are disposed on the circuit board, and the wireless terminal is independently disposed and in wireless communication with the circuit board.

Abstract: A linear positioning platform and a linear positioning system based on magnetic transmission are disclosed. The linear positioning platform includes a moving magnetic linear motor module and a magnetic transmission linear positioning module. The moving magnet linear motor module includes a base, a stator coil, a first yoke, and motor poles. There is a gap between the stator coil and motor pole. The magnetic transmission linear positioning module includes first mover poles, a magnetizing skeleton, a plurality of magnetizing blocks, a second yoke, and second mover poles. There is a gap between the first mover pole and magnetizing block and also between the magnetizing block and second mover pole. The linear positioning platform and linear positioning system have the characteristics of low cost, compact structure, high utilization rate of permanent magnets, high speed, high precision, high dynamic response, etc., which greatly promotes the development of related fields.

Abstract: A method for realizing high-speed cladding of hollow offset-focus annual laser. The method includes the following steps: dividing laser into annual light, and forming an offset-focus annual light spot after the annual light is focused, which acts on a surface of a matrix; during cladding for the surface of the matrix, selecting laser parameters according to different materials; after every cladding, making a shift by 20-80% of the diameter of the light spot in a vertical direction of a scanning speed of the laser; in the cladding process, selecting shielding gas for protection, and blowing the shielding gas to the molten powder in the air to spray the molten powder in air towards the surface of the matrix at a certain speed so that the cladding layer and the matrix are bonded firmly, and cladding the surface of the matrix to form a coating layer.

Abstract: Disclosed are a 1,8-naphthalimide derivative, a preparation method therefor and a use thereof. The 1,8-naphthalimide derivative is easy to prepare, and is an enhanced Cu2+ fluorescent probe, which can detect Cu2+ by two wavelengths and be applied to almost-all-water systems. According to atitration experiments and blank experiments at 392 nm and 754 nm, the detection limit of the 1,8-naphthalimide derivative of the present invention for Cu2+ is 2.6368×10?7 mol/L and 2.0156×10?7 mol/L, respectively, indicating that same can perform quantitative detection for Cu2+ with a high selectivity and a high sensitivity by using two wavelengths. In addition, a pH colorimetric switch based on 1,8-naphthalimide can rapidly and reversibly respond to a pH by means of three ways: a maximum absorption wavelength, absorbance and color change. Same has a narrow switching pH range, a good selectivity and a high sensitivity, can be used in almost-all-water systems.

Abstract: The present invention provides the use of a metformin salt, particularly metformin monothreonate, in the preparation of a medicament for treating cerebral infarction. The metaformin monothreonate of the present invention has an excellent effect in the treatment of cerebral infarction. The present invention also provides a method for preparing metformin monothreonate and a composition comprising metformin monothreonate.

Abstract: The invention relates to a method for preparing a vinyl ether polymer by photo-initiated polymerization, which comprises the step of: under a protective atmosphere, performing photo-initiated polymerization on a vinyl ether monomer in the presence of an organic halogenated hydrocarbon and manganese carbonyl under irradiation of light having a wavelength of 365-550 nm at ?25° C. to 25° C., to obtain a vinyl ether polymer after the reaction is completed. In the method, a vinyl ether monomer is subjected to cationic polymerization in the presence of manganese carbonyl and an organic halogenated hydrocarbon under visible light, to prepare a vinyl ether polymer with controlled molecular weight and narrow molecular weight distribution.