Signal injection calibration method of integral pulse magnetic field measurement system

The invention provides a signal injection calibration method of an integral pulse magnetic field measurement system. The method includes the following steps that: 1) an external-connection magnetic field loop antenna of the integral pulse magnetic field measurement system is removed, and the area of the magnetic field loop antenna is measured; 2) sine wave signal small-signals of a certain fixed frequency are injected into the input end of the pulse magnetic field measurement system of which the magnetic field loop antenna is removed, and sine wave signal small-signals of the same frequency can be obtained at the output end of the system, and an oscilloscope is adopted to measure the injected sinusoidal signals and the outputted sinusoidal signals simultaneously; 3) the characteristic coefficient of the integral pulse magnetic field measurement system is calculated according to the amplitudes and frequencies of the injected signals and the outputted signals; 4) the measurement coefficient ...

Testing liquid and method for rapid testing chrome-plating layer corrosion-proof performance

A test liquid is prepared by mixing solution of 40-100g sodium chloride, 20-50g ammonium chloride and 5-20g potassium ferricyanide together and then diluting it to 1000 mL. The test method includes removing out oil on workpiece surface by organic solvent or magnesium oxide paste, cleaning it with distilled water, sticking filter paper soaked in test liquid on detected surface for 10 minutes, cleaning it with distilled water, checking corrosive spots and judging its anticorrosion property based on numbers of spots.

Application of ADAM17 in preparation of medicine for treating effector CD8 + T cell differentiation related diseases

The invention belongs to the technical field of antitumor drug research, and particularly discloses application of ADAM17 in preparation of drugs for treating effector CD8 + T cell differentiation related diseases. Experiments prove that in a mouse tumor model, the CD8 + T cell adoptively and specifically modified with ADAM17 can significantly inhibit growth of tumors compared with a wild type CD8 + T cell, and the proportion of depleted CD8 + T cells in the tumors is reduced. Meanwhile, ADAM17 is modified in the CD8 + T cell, so that the capability of the CD8 + T cell for removing bacteria can be effectively improved, and the anti-infection capability is enhanced.

Device and method for measuring shielding effectiveness of electromagnetic pulse of thunder and lightning

The invention relates to a device and method for measuring the shielding effectiveness of an electromagnetic pulse of thunder and lightning. The device comprises a DC high-voltage generator, a charging switch, a current-limiting resistor, a non-inductive pulse capacitor, a tungsten-embedded switch, an AC-DC voltage divider, an adjustable inductor, a large-scale transmission line, an adjustable water resistor, a pulsed electric field optical fiber measurement system, a pulsed magnetic field optical fiber measurement system, a shielding cabinet, and an oscilloscope. The device is characterized in that the DC high-voltage generator charges the non-inductive pulse capacitor through the charging switch and the current-limiting resistor till the voltage reaches a given voltage, and then the energy stored by the capacitor is discharged to the large-scale transmission line and the adjustable water resistor through the adjustable inductor, thereby generating a thunder and lightning electromagnetic ...

Battery liquid injection safety device, liquid injection method and liquid injection system

The embodiment of the invention provides a liquid injection safety device, a liquid injection method and a liquid injection system of a battery. The liquid injection safety device of the battery is applied to the battery (100) with a liquid injection port (1312), and the liquid injection safety device comprises a liquid injection piece channel (210) which is arranged corresponding to the liquid injection port (1312) of the battery (100), and the liquid injection piece channel (210) is used for enabling a liquid injection piece (300) to pass through so that the liquid injection piece (300) can penetrate through the liquid injection port (1312) of the battery (100) to inject electrolyte into the battery (100). According to the technical scheme, the liquid injection safety device is used for protecting the battery in the liquid injection process, the liquid injection piece can accurately penetrate through the liquid injection opening of the battery through the liquid injection piece channel ...

Three -dimensional pulsed magnetic field measuring device of triangular toper

The utility model relates to a three -dimensional pulsed magnetic field measuring device of triangular toper, include: 3 isosceles right -angle triangle -shaped's that huge magneto resistive sensor and modulate circuit unified multilayer PCB board, laser energy supply module, lightning conversion module, equilateral triangle -shaped's bottom plate and the medium optical cable of making perfect, 3 piece isosceles right -angle triangle -shaped's multilayer PCB circuit board mutually orthogonal, and constitute the tetrahedron of a triangular toper with equilateral triangle -shaped bottom plate, measuring device's bottom water is kept flat and is put, and the bottom line of the 1st block of PCB board is with (i) (i) the axle is parallel for x, (i) (i) 1, (i) (i) 2 with (i) (i) 3, (i) (i), (i) by is (i) with (i) bz (i) for bx for resoluble magnetic field component that can be regarded as three -dimensional rectangular coordinate axle direction for B for B for B to utilize 3 huge magneto resistive ...

High tower lightning current measuring apparatus and method

The invention relates to a high tower lightning current measuring apparatus and method. The apparatus comprises a Russell coil, a gas discharge tube connected in parallel with the Russell coil, an attenuator connected with the output of the gas discharge tube, a light emitter connected with the output of the gas discharge tube, an all-dielectric optical cable, a light receiver and an energy supply laser. The high tower lightning current measuring apparatus has the following advantages: the anti-interference capability is very high, the circuit structure is simple and reliable, the dynamic scope for measuring lightning current is enlarged, a dual-protection function is realized, the reliability is quite high, and the cost is low.

Liquid injection method and liquid injection system of battery

The embodiment of the invention provides a liquid injection method and a liquid injection system of a battery. The liquid injection method of the battery comprises the following steps: arranging a sealing element at a liquid injection port of the battery; penetrating a liquid injection part into the sealing part so as to enable the liquid injection part to penetrate through the sealing part to enter the interior of the battery; the electrolyte is injected into the battery through the electrolyte injection part, and before the electrolyte is injected into the battery through the electrolyte injection part, the electrolyte injection method further comprises the step of discharging internal gas of the battery through the electrolyte injection part. According to the liquid injection method provided by the embodiment of the invention, the liquid injection port of the battery is provided with the sealing element, and the liquid injection element is utilized to pierce the sealing element to enter ...

Touch pad module

Interferon eye drops and preparation method thereof

The invention provides interferon eye drops and a preparation method thereof, and relates to the technical field of eye drops. The interferon eye drops comprise recombinant human interferon alpha2b, polyvinyl alcohol, a PH regulator, a dandelion extracting solution, a mint extracting solution, a fructus forsythiae extracting solution, a honeysuckle extracting solution and water for injection. The mass parts of the recombinant human interferon alpha2b, the polyvinyl alcohol, the PH regulator, the dandelion extracting solution, the mint extracting solution, the fructus forsythiae extracting solution, the honeysuckle extracting solution and the water for injection are as follows: 4 to 6 parts of the recombinant human interferon alpha2b, 4 to 5 parts of the polyvinyl alcohol, 2 to 3 parts of the PH regulator, 3 to 5 parts of the dandelion extracting solution, 3 to 5 parts of the mint extracting solution and 3 to 5 parts of the fructus forsythiae extracting solution. 3 to 5 parts of honeysuckle ...

Liquid injection detection device and method of battery and liquid injection system

The embodiment of the invention provides a liquid injection detection device and method of a battery and a liquid injection system. The liquid injection detection device of the battery is applied to a liquid injection part (300) of the battery and is configured to move along a preset moving path (P), the liquid injection detection device comprises a first sensor (210) which is arranged towards the end part of the liquid injection part (300) and is positioned in the preset moving path (P), and the first sensor (210) is used for detecting the movement of the end part of the liquid injection part (300) so as to detect whether the end part of the liquid injection part (300) is complete or not. According to the technical scheme, the liquid injection detection device is arranged on the liquid injection part of the battery, and the first sensor in the liquid injection detection device can be used for detecting the integrity of the end part of the liquid injection part, so that the influence on ...

Pulse electric field measurement system signal injection calibration method

The present invention provides a pulse electric field measurement system signal injection calibration method. The method includes the following steps that: (1) a resistor is connected in series before an electric field antenna; (2) sine wave small-signals are injected into the front end of the resistor, and the amplitude of signals which are injected into the front end of the resistor, an antenna end and a measuring system output end is measured; (3) the voltage transmission coefficient of a measuring system is the calculated; (4) the input capacitance of the measuring system is the calculated; (5) the effective length and radius of the antenna are measured, and the equivalent capacitance of the antenna is calculated; and (6) and the measurement coefficient of the pulse electric field measuring system can be calculated according to the effective length and the equivalent capacitance of the antenna, the input capacitance and the voltage transmission coefficient of the measuring system. With ...