42results about How to "Strong amplitude" patented technology

The invention concerns a vibration test apparatus for testing various fastening elements, in particular bolt / nut connections, where a fastening element is fixed in the vibration test apparatus and subjected to lateral oscillating or vibrating actions via a carriage which is movably connected to a connecting rod, where the connecting rod is connected with a stroke regulator, where the eccentricity of the stroke regulator is adjustable during operation via a regulating mechanism. The new feature of the vibration test apparatus according to the invention is that the eccentricity of the stroke regulator via a regulating mechanism is stepless and arranged internally of a stroke regulator and at least includes a slide, where the slide is displaceable in relation to a connecting rod bearing via a control rod.

A method for rapidly extracting RNA using an ultrasonic principle-based animal and plant tissue ablation instrument, comprising: 1) first preserving tissues or cells using an extracting liquid A and then adding an extracting liquid B into the tissues or cells preserved using the extracting liquid A, and uniformly mixing to obtain a mixture; 2) performing ultrasonic crushing on the mixture when extracting RNA from the tissues; 3) directly performing the operation in step 5) below when extracting RNA from the cells; 4) uniformly mixing the mixture subjected to ultrasonic crushing by inversion; 5) in the mixture of RNA extracted from the cells in step 3) or the mixture of step 4), adding chloroform for centrifugation, and taking an upper layer of liquid; 6) adding isopropanol into the upper layer of liquid, and then performing centrifugation to obtain a precipitate; 7) adding an ethanol solution into the precipitate, uniformly mixing, centrifuging, and discarding the liquid; 8) finally, adding water for dissolution.

The invention relates to the technical field of a medicine preparation, and concretely discloses medicine for treating hypertension and a preparation method thereof. The medicine has the active ingredients of nifedipine and metoprolol, wherein the mass ratio of the nifedipine to the metoprolol is 2:1. The metoprolol can decelerate the heart rate and has the hypotensive effect; the nifedipine can accelerate the heart rate and has the hypotensive effect; the metoprolol and the nifedipine realize the mutual complementation, so that the hypotensive effect is enhanced; the contraindication, the intolerance and the side effects generated in the single medication process are reduced. Compared with the step treatment and sequential treatment of the single-ingredient medication, the composite medicine has the advantages that the taking and the treatment are simple, convenient and fast. Meanwhile, the medicine is applicable to about 90 percent of hypotensive people groups, and is particularly suitable for hyperdynamic and high-impedance hypertension; the myocardial ischemia due to hypertension can be obviously relieved; meanwhile, the atrioventricular hypertrophy and various conduction blocking can be delayed or blocked.

The invention discloses an improved SMSP interference method for a linear frequency modulation radar, which belongs to the field of radar electronic confrontation. The method provided by the invention comprises the steps that a jammer receives a radar signal, and converts the signal into an intermediate frequency signal through the down frequency conversion of a mixer; the converted radar intermediate frequency signal is sent into an A / D converter through a low-pass filter, and is sampled through a high speed clock; radar pulse signals are grouped, copied and spliced into a complete radar pulse string, and the new complete radar pulse string is modulated; the modulated pulse undergoes D / A conversion, and then is sent into the low-pass filter; and a pulse jamming signal after low-pass filtering is up-frequency-converted through the mixer to the center carrier frequency of the radar and is emitted. According to the invention, a sub-pulse string cycle forwarding working mode is used; a sub-pulse string signal and the radar signal contain the same frequency modulation slope, and match the matched filter of the radar signal; and a false target can be generated on the radar receiving end for cheating.

The invention discloses an information processing method and an electronic device. The method is applied to an electronic device. The electronic device includes a bendable display screen. The electronic device also includes a mechanical wave generating device. The method includes: detecting whether the electronic device satisfies a predetermined condition, and obtaining a first detection result; when the first detection result indicates that the electronic device meets the predetermined condition, generating a first instruction; responding to the first instruction, controlling the The mechanical wave generating device generates mechanical waves, so that the display screen vibrates under the action of the mechanical waves.

The present invention relates to a dynamic automatic liquid-level detector for an oil well and belongs to the oil field automatic detecting technical field; the dynamic automatic liquid-level detectorconsists of a test tube (1), a sensor (2), an electromagnetic valve (3), a container (4), an electromagnetic valve (5), an electronic unit (6), a sound velocity determine tube (7), and a blind-terminal(8); the test tube (1), the solenoid valve (5) and the container are connected in series way one by one, which easily triggers and controls the width and the intensity of a pulse sound source; the container is connected with the test tube (1) through the electromagnetic valve (3), and communicated with atmosphere or connected with external low-voltage pipes through the electromagnetic valve (5);a special thin and long blind pipe is arranged beside the three-way sensor at the middle of the test tube to test the real velocity of sound; the open and the close of the electromagnetic valves (3)and (5) are controlled by the electronic unit (6) which collects the signals from the sensor (2) and calculates the depth of the liquid, and then displays and carries out a further transfer of the data; the dynamic automatic liquid-level detector has the advantages that the dynamic automatic liquid-level detector can spring the sound source automatically; and can control the pulse and the width of the sound source; and also can detect the velocity of the sound quickly and correctly without being effected by the factors of casing pressure, temperature, the amount of liquid contained in gas.

The invention discloses a vibration energy collection device based on piezoelectric stacking and electromagnetic induction. The device consists of a device base, a device frame, an amplitude amplification mechanism and an energy collection mechanism from bottom to top. The amplitude amplification mechanism includes a piezoelectric device and a magnet array. 1 and magnet array 2. The energy collection mechanism includes cantilever beams, magnet array 3, magnet array 4 and induction coils. Compared with other energy collection devices, this device utilizes vibration more fully and can obtain more The advantage of outputting energy.

The invention discloses a spectral-shaping-based consistency processing method of a different-natural-dominant-frequency detector. The method includes the following steps: 1) data inputting; 2) preprocessing; 3) shot record editing: multi-shot records of the same physical position of two data are selected and top cutting and bottom cutting editing processing, which reserves the part of effective waves, is performed and abnormal track and field values are removed; 4) comprehensive spectral analysis: comprehensive spectral analysis is performed respectively on shot records of different natural dominant frequencies which undergo the editing processing; 5) solving spectral-shaping proportionality factors: according to two comprehensive frequency spectrums and direction which needs to be adjusted, amplitude proportionality factors corresponding to the different frequencies are obtained through analysis; 6) shot-record spectral shaping: the solved spectral-shaping proportionality factors are used to perform spectral shaping on all shot records which need to be adjusted so as to obtain a shot record which is consistent with a target shot record; 7) outputting: the shot record which undergoes the spectral shaping is output. The spectral-shaping-based consistency processing method has a great application prospect in improvement of consistence processing of the different detector natural dominant-frequency records.