Abstract: An operation method of a turbine fracturing device and a turbine fracturing device are provided. The turbine fracturing device includes a turbine engine, a speed reducer, a brake mechanism, and a fracturing pump, the method includes: driving, by the turbine engine, the fracturing pump to perform a fracturing operation through the speed reducer so as to keep the fracturing pump in an operating state, the fracturing pump being configured to suck fluid of a first pressure and discharge fluid of a second pressure, the second pressure being greater than the first pressure; and in response to an idling instruction, the turbine engine entering an idling state and triggering a brake operation so as to keep the fracturing pump in a non-operating state.

Abstract: The present invention discloses a manifold system of low pressure suction and high pressure discharge, which includes a low pressure manifold, a high pressure manifold and a plunger pump. The low pressure manifold transports media into the hydraulic end of the plunger pump. The hydraulic end of the plunger pump is provided with two discharging ports, which are connected into the high pressure manifold. The present invention has the following beneficial effects: the five-cylinder plunger pump at 5000 HP or above ensures the high pressure and large displacement power source for the fracturing equipment. The dual discharge form of the five-cylinder plunger pump achieves the smooth discharge of liquid from the five-cylinder plunger pump and prevents sand from accumulating within the low pressure manifold, meanwhile ensures the large displacement of the fracturing equipment.

Abstract: A six-gear automatic transmission device is provided for automobiles with a brushless control-by-wire centrifugal ball arm engagement. One brushless control-by-wire centrifugal ball arm engagement device is provided between each gear input gear and each gear driving gear; and by controlling the engagement and disengagement of the brushless control-by-wire centrifugal ball arm engagement device, the shifting control of the six-gear automatic transmission for automobile with a brushless control-by-wire centrifugal ball arm engagement device is performed. The technology provides advantages including compact structure, being capable of dynamic gear-shift, no mechanical or hydraulic gear-shift components and low operational energy consumption.

Abstract: Method and apparatus for electronic detection and determination includes detecting a signal T0 in a detection zone and a signal R0 in a reference zone before a sample is added; adding a sample and detecting the signals in each of the detection zone and the reference zone at an interval of a second preset period; calculating a judgement value based on 2k immediately previous signals in each of the detection zone and the reference zone, the signal T0 in the detection zone before the sample is added, and the signal R0 in the reference zone before the sample is added, each time when k successive signals are detected in each of the detection zone and the reference zone; and determining a judgement result based on m successive judgement values and a preset result threshold corresponding to a current detection time.

Abstract: The present disclosure provides a sample pretreatment reagent for detecting drug in hair, which comprises a hydroxyl group-containing compound which belongs to a reducing agent capable of cleaving disulfide bonds. The disulfide bonds in hair particles are opened to expose the drug molecules embedded in hair gaps, thus improving the release amount of drug molecules from hair without affecting the structure or property of the drug molecules, so that the drug detection limit of the method for detecting drug in hair is reduced, and the drug molecules in a lower content in hair can be detected.

Abstract: The present invention discloses an air intake and exhaust system of a turbine engine, including an air intake system and an exhaust system. The air intake system is connected to an air inlet of the turbine engine, and the exhaust system is connected to an exhaust port of the turbine engine. The air intake system includes air intake filters and air intake pipings, which are connected to each other. The air intake filters are in V-shaped structures. The exhaust end of the exhaust system is provided with a rain cap. The beneficial effects are as follows: the air intake area is large, the flow rate of the air intake is relatively low, and the air filter has a long life time.

Abstract: Disclosed is an air source system for supplying air to a turbine engine by fracturing manifold equipment, including an air supply device, an air delivery manifold, a filtering device, a gas detecting system and a connecting device, the air delivery manifold, the filtering device and the gas detecting system are integrated on the fracturing manifold equipment, the air supply device is connected to the air delivery manifold through the filtering device, and the air delivery manifold supplies air to the turbine engine through the connecting device. Beneficial effects: avoiding the hidden danger of the high pressure region, saving the floor space, avoiding the wiring of on-site delivery manifold, enhancing the connection efficiency, and reducing the difficulty of wellsite installation.

Abstract: The present invention discloses a three-gear automatic transmission for electric vehicle with a brushless control-by-wire centrifugal ball arm engagement device. One brushless control-by-wire centrifugal ball arm engagement device is provided between each gear input gear and each gear driving gear; and by controlling the engagement and disengagement of the brushless control-by-wire centrifugal ball arm engagement device, the shift control of the three-gear automatic transmission for electric vehicle with a brushless control-by-wire centrifugal ball arm engagement device is performed. The present invention has such advantages as compact structure, being capable of dynamic gear-shift, no mechanical or hydraulic gear-shift components and low operational energy consumption.

Abstract: The present invention discloses a three-gear automatic transmission for electric vehicle with a brushless control-by-wire centrifugal ball arm engagement device. One brushless control-by-wire centrifugal ball arm engagement device is provided between each gear input gear and each gear driving gear; and by controlling the engagement and disengagement of the brushless control-by-wire centrifugal ball arm engagement device, the shift control of the three-gear automatic transmission for electric vehicle with a brushless control-by-wire centrifugal ball arm engagement device is performed. The present invention has such advantages as compact structure, being capable of dynamic gear-shift, no mechanical or hydraulic gear-shift components and low operational energy consumption.

Abstract: A sensing device and method in detecting binding energy and binding kinetics between molecules; the sensing device has a sensor, a microfluidic chip and a measurement circuit. The sensor has multiple field effect transistors, and each field effect transistor adopts single-layer single crystal graphene as a conductive channel, thereby having extremely high sensitivity and stability; and the field effect transistors are arranged in an array and are provided with multichannel measurement circuits to detect the binding dynamics processes of different molecules or different copies of the same molecule in parallel so as to meet the high-throughput detection requirements. A compound that is non-covalently bound with the single-layer single crystal graphene as a medium to fix probe molecules on the surface of the conductive channel, thereby retaining the intrinsic structure of the graphene, and improving the signal-to-noise ratio and the sensitivity of the graphene field effect transistor.

Abstract: The present invention discloses a six-gear automatic transmission for automobile with a brushless control-by-wire centrifugal ball arm engagement device. One brushless control-by-wire centrifugal ball arm engagement device is provided between each gear input gear and each gear driving gear; and by controlling the engagement and disengagement of the brushless control-by-wire centrifugal ball arm engagement device, the shifting control of the six-gear automatic transmission for automobile with a brushless control-by-wire centrifugal ball arm engagement device is performed. The present invention has such advantages as compact structure, being capable of dynamic gear-shift, no mechanical or hydraulic gear-shift components and low operational energy consumption.

Abstract: Method and apparatus for electronic detection and determination includes detecting a signal T0 in a detection zone and a signal R0 in a reference zone before a sample is added; adding a sample and detecting the signals in each of the detection zone and the reference zone at an interval of a second preset period; calculating a judgement value based on 2k immediately previous signals in each of the detection zone and the reference zone, the signal T0 in the detection zone before the sample is added, and the signal R0 in the reference zone before the sample is added, each time when k successive signals are detected in each of the detection zone and the reference zone; and determining a judgement result based on m successive judgement values and a preset result threshold corresponding to a current detection time.

Abstract: The present invention provides a protopanoxadiol derivative of structural formula I or II, a preparation method and an application thereof. The present invention performs structural modification on protopanoxadiol, and obtains multiple novel compounds with unique structures.

Abstract: The invention refers to a technical field of display device producing, and discloses a composite repairing apparatus for liquid crystal display panel. The repairing device has a repairing device, which includes a gantry slidably assembled on the lighting device, which gantry being slidably assembled with a observation camera, a metal line repairing laser and a repairing laser employing black matrix diffusion; a driving device for driving the gantry to slide and driving the observation camera, the metal line repairing laser and the repairing laser employing black matrix diffusion to slide; a control device, for determining the positions of the defects in the panel according to the displayed images collected by the observation camera, and controlling the metal line repairing laser and the repairing laser employing black matrix diffusion to repair the panel defects.

Abstract: The invention refers to a technical field of display device producing, and discloses a composite repairing apparatus for liquid crystal display panel. The repairing device has a repairing device, which includes a gantry slidably assembled on the lighting device, which gantry being slidably assembled with a observation camera, a metal line repairing laser and a repairing laser employing black matrix diffusion; a driving device for driving the gantry to slide and driving the observation camera, the metal line repairing laser and the repairing laser employing black matrix diffusion to slide; a control device, for determining the positions of the defects in the panel according to the displayed images collected by the observation camera, and controlling the metal line repairing laser and the repairing laser employing black matrix diffusion to repair the panel defects.

Abstract: The present invention discloses a method for repairing a display panel, in which a path for electrically connecting two ends of an opened data line at an opened part thereof is formed by using first line segments and a first common electrode, wherein each of the first line segments is a part of one of common electrode lines in the display panel intersecting the opened data line, and the first common electrode is one of a plurality of common electrodes in a pixel array that is electrically connected with the first line segments. Further, a welding process is performed at an intersecting region between the first line segments and the opened data line to form an electrical connection, and electrical connections between the path and other common electrode lines and other common electrodes outside the path are cut off.

Abstract: The present invention provides a protopanoxadiol derivative of structural formula I or II, a preparation method and an application thereof. The present invention performs structural modification on protopanoxadiol, and obtains multiple novel compounds with unique structures.

Abstract: The present invention discloses a method for repairing a display panel, in which a path for electrically connecting two ends of an opened data line at an opened part thereof is formed by using first line segments and a first common electrode, wherein each of the first line segments is a part of one of common electrode lines in the display panel intersecting the opened data line, and the first common electrode is one of a plurality of common electrodes in a pixel array that is electrically connected with the first line segments. Further, a welding process is performed at an intersecting region between the first line segments and the opened data line to form an electrical connection, and electrical connections between the path and other common electrode lines and other common electrodes outside the path are cut off.

Abstract: An analyzing and reading device and an analyzing and reading method, for reading and analyzing a test strip for assay detection are disclosed. The test strip has a detection zone and a blank zone, the device includes a photoelectric detection circuit and a processor, wherein the photoelectric detection circuit includes at least two light sources which locate corresponding to the positions of the detection zone and the blank zone of the test strip and are able to emit lights corresponding to the detection zone and blank zone of the test strip, and at least one optical detectors which receive reflected lights from the above two zones; wherein lights emitted by the at least two light sources irradiate the detection zone and blank zone of the strip and are reflected therefrom, and then are received by the optical detector, which in turn feedback the detection information to the processor; the processor making analysis and decision based on the detection information received.