Abstract: The present application relates to a piperazine-based compound and a composition thereof, and the use thereof in the manufacture of an anti-tumor medicament.

Abstract: An apparatus and method for preparing high-purity spherical magnesium and/or high-purity magnesium powder are provided. The apparatus includes a vertical furnace body, a heating zone, and a condensing zone, where a periphery of the condensing zone is provided with a first thermal insulation device and a second thermal insulation device sequentially from bottom to top, and each of the first thermal insulation device and the second thermal insulation device is removably arranged; the periphery of the condensing zone is further provided with a liquid cooling device; a gas inlet and a gas outlet are formed in the condensing zone; and an inner wall of the condensing zone is provided with an arrangement structure configured to arrange a collection device. A heating temperature of a material and condensation conditions in the condensing zone are controlled to make an evaporated magnesium vapor condensed on the collection device in the condensing zone.

Abstract: A method for generating a layout of a Josephson junction array includes obtaining an original script, in which geometric and action parameters are defined in the original script, the geometric parameters comprise a first structural parameter and a second structural parameter, the action parameters comprise an initial position parameter and a connection parameter; obtaining a first parameter value, a second parameter value, an initial position value, and a connection parameter value; in the original script, respectively assigning the first parameter value, the second parameter value, the initial position value, and the connection parameter value to the first structural parameter, the second structural parameter, the initial position parameter, and the connection parameter, so as to obtain a target script; and performing the target script to obtain a layout of a Josephson junction array having multiple connected Josephson junctions.

Abstract: A combined catalytic viscosity reducing system includes a catalyst slug, a heat generating system slug, a gas injection slug, and a water-soluble viscosity reducing system slug. The catalyst slug includes 10%-15% of azacarbene iron, 15%-30% of tert-butyl hydroperoxide, 2%-5% of phosphoric acid, 2%-5% of hydrogen donor, and 0.5%-1% of emulsifier agent, and the others are solvent. The heat generating system slug includes 10%-30% of NaNO2, 8%-25% of NH4Cl, and 3%-10% of acid initiator, and the others are water, totaling 100%. The water-soluble viscosity reducing system slug, according to mass percentage, includes 0.2%-0.5% of surfactant and 2%-10% of alkali, and the others are water. The combined catalytic viscosity reducing system can effectively reduce viscosity without injecting steam, and the viscosity reduction rate can reach 96.5%.

Abstract: A circuit board assembly is applied to the field of electronic communications technologies to resolve a prior-art heat dissipation problem of a circuit board. The circuit board assembly combines, on a second circuit board, low-speed signals transmitted between a plurality of I/O modules and an IC chip, and then transmits the combined low-speed signals to the IC chip by using a low-speed cable. A low-speed signal sent by the IC chip to the plurality of I/O modules is extended to a plurality of low-speed signals on the second circuit board, and then the plurality of low-speed signals are separately sent to the plurality of I/O modules. This may be applied to a scenario in which a relatively large quantity of electronic components need to be disposed on a circuit board.

Abstract: Disclosed is catalyst composition, a process for preparing the catalyst composition, and a use of the catalyst composition. The catalyst composition comprises 1 wt % to 4 wt % of free azacarbene, 1 wt % to 2 wt % of azacarbene iron, 15 wt % to 30 wt % of a phase transfer catalyst, 1 wt % to 5 wt % of a hydrogen donor, 5 wt % to 10 wt % of phosphoric acid, 0.5 wt % to 1 wt % of emulsifier, with the rest being solvent. This disclosure also provides a process for preparing the catalyst composition, comprising: mixing the free azacarbene and the azacarbene iron with the solvent according to a ratio, then adding and mixing the phase transfer catalyst and the hydrogen donor, then adding and mixing the phosphoric acid and the emulsifier to obtain the catalyst composition. The beneficial effect of this disclosure is: only less azacarbene iron and free azacarbene are needed to achieve rapid and efficient viscosity reduction of heavy oil.

Abstract: A quality assessment method for automatic annotation of speech data is provided and includes: building a base rule-base of automatically annotated speech data based on quality key indicators; reading automatically annotated speech data to be detected, and performing quality detection on the automatically annotated speech data to be detected according to the quality key indicators to thereby complete quality measurement; updating an automatically annotated speech dataset according to a result of the quality measurement; and importing the automatically annotated speech dataset after the updating into the base rule-base. The shortcomings of using traditional quality assessment methods for data annotation in automatic machine annotations can be overcome, and it can play a very positive supporting role in promoting the development of ethnic minority speech intelligence.

Abstract: A steel reinforced concrete column for a high rise building comprises a plurality of hot-rolled steel sections extending longitudinally through the concrete column. Each of these steel sections has an outward flange with an outer surface turned outwards in the concrete column, an opposite inward flange with an outer surface turned inwards in the concrete column, and a web connecting the outward flange to the inward flange. The steel sections are arranged in the concrete column so that the outer surfaces of their inward flanges at least partially delimit therein a central concrete core with n lateral sides and a transversal cross-section that forms an n-sided polygon, n being at least equal to three, and each of then lateral sides of the central concrete core being coplanar with the outer surface of the inward flange of at least one steel section.

Abstract: A tea impurity data annotation method based on supervised machine learning is provided. In particular, a feature vector of tea and impurity is first extracted by using a traditional image processing method, each element in the feature vector then is added with a corresponding annotation bit, a training dataset and a test dataset subsequently are divided by using a manual discrimination method, and afterwards data annotation is performed on each feature element in the test dataset. The manual method and the supervised machine learning method are combined, which can improve the accuracy and ensure the work efficiency.

Abstract: Disclosed is a combined catalytic viscosity reducing system and a use of the combined system. The combined catalytic viscosity reducing system comprises four slugs, the four slugs are a catalyst slug, a heat generating system slug, a gas injection slug, and a water-soluble viscosity reducing system slug; the catalyst slug includes 10%-15% of azacarbene iron, 15%-30% of tert-butyl hydroperoxide, 2%-5% of phosphoric acid, 2%-5% of hydrogen donor, and 0.5%-1% of emulsifier agent, and the others are solvent; the heat generating system slug includes 10%-30% of NaNO2, 8%-25% of NH4Cl, and 3%-10% of acid initiator, and the others are water, totaling 100%; the water-soluble viscosity reducing system slug, according to mass percentage, includes 0.2%-0.5% of surfactant and 2%-10% of alkali, and the others are water. The combined catalytic viscosity reducing system can effectively reduce viscosity without injecting steam, and the viscosity reduction rate can reach 96.5%.

Abstract: Disclosed is catalyst composition, a process for preparing the catalyst composition, and a use of the catalyst composition. The catalyst composition comprises 1 wt % to 4 wt % of free azacarbene, 1 wt % to 2 wt % of azacarbene iron, 15 wt % to 30 wt % of a phase transfer catalyst, 1 wt % to 5 wt % of a hydrogen donor, 5 wt % to 10 wt % of phosphoric acid, 0.5 wt % to 1 wt % of emulsifier, with the rest being solvent. This disclosure also provides a process for preparing the catalyst composition, comprising: mixing the free azacarbene and the azacarbene iron with the solvent according to a ratio, then adding and mixing the phase transfer catalyst and the hydrogen donor, then adding and mixing the phosphoric acid and the emulsifier to obtain the catalyst composition. The beneficial effect of this disclosure is: only less azacarbene iron and free azacarbene are needed to achieve rapid and efficient viscosity reduction of heavy oil.

Abstract: A nut leadscrew type automatic door opening and closing mechanism for moving a door of a motor vehicle relative to a vehicle body. The nut leadscrew type automatic door opening and closing mechanism includes a driving device, a leadscrew, a nut pushing block and a pushing rod. The driving device is fixedly connected to a door, the leadscrew is rotatably mounted on the door, the nut pushing block is sleeved on the leadscrew, a first end of the pushing rod is hinged to the nut pushing block, and a second end of the pushing rod is hinged to the vehicle body. The driving device is capable of driving the leadscrew to rotate, so as to allow the nut pushing block and the pushing rod to be reciprocally linearly movable along the leadscrew to allow the pushing rod to drive the door to open or close relative to the vehicle body.

Abstract: A nut leadscrew type automatic door opening and closing mechanism, an automobile automatic door, and an automobile. The nut leadscrew type automatic door opening and closing mechanism includes a driving device, a gearbox, a nut gear, and a leadscrew. The driving device is fixedly connected to a door, the gearbox is hinged to the door, and the nut gear is disposed in the gearbox. One end of the leadscrew is hinged to a vehicle body, and the other end extends in an axial direction. The nut gear is sleeved on the leadscrew, and the driving device is configured to drive the nut gear to rotate, so that the nut gear is reciprocally linearly movable along the leadscrew to push the door to open or close relative to the vehicle body.

Abstract: An OLED display substrate, a method of manufacturing the OLED display substrate, and a display device are provided. The OLED display substrate includes a plurality of aperture regions arranged in an array on a base substrate; and a plurality of storage capacitors on the base substrate, an orthographic projection of each storage capacitor of the plurality of storage capacitors on the base substrate having an overlapping region with an orthographic projection of an aperture region corresponding to the storage capacitor in the plurality of aperture regions on the base substrate.

Abstract: A quality assessment method for automatic annotation of speech data is provided and includes: building a base rule-base of automatically annotated speech data based on quality key indicators; reading automatically annotated speech data to be detected, and performing quality detection on the automatically annotated speech data to be detected according to the quality key indicators to thereby complete quality measurement; updating an automatically annotated speech dataset according to a result of the quality measurement; and importing the automatically annotated speech dataset after the updating into the base rule-base. The shortcomings of using traditional quality assessment methods for data annotation in automatic machine annotations can be overcome, and it can play a very positive supporting role in promoting the development of ethnic minority speech intelligence.

Abstract: The present invention discloses a method for splicing vector polygon regions with holes, comprising the steps of: acquiring any two vector polygon regions A1 and A2 to be spliced, the outer frame P1 of A1 and the outer frame P2 of A2; judging whether P1 and P2 have overlapping parts; storing the connection relationship of the non-overlapping edges and the non-overlapping edges of P1 and P2 in a data table T; performing intersection on the overlapping edges of P1 and P2 and storing the overlapping edges in the data table T; traversing the data table T, finding the connection relationship of edges, and constructing the splicing of vector polygon regions. According to the scheme, the present invention has the advantages of wide application range, high splicing efficiency and the like, and has high practical value and popularization value in the technical field of vector graphics splicing.

Abstract: An OLED display substrate, a method of manufacturing the OLED display substrate, and a display device are provided. The OLED display substrate includes a plurality of aperture regions arranged in an array on a base substrate; and a plurality of storage capacitors on the base substrate, an orthographic projection of each storage capacitor of the plurality of storage capacitors on the base substrate having an overlapping region with an orthographic projection of an aperture region corresponding to the storage capacitor in the plurality of aperture regions on the base substrate.

Abstract: The present disclosure relates to a nut leadscrew type automatic door opening and closing mechanism, an automobile automatic door, and an automobile. The nut leadscrew type automatic door opening and closing mechanism includes a driving device, a gearbox, a nut gear, and a leadscrew, wherein the driving device is fixedly connected to a door, the gearbox is hinged to the door, and the nut gear is disposed in the gearbox, one end of the leadscrew is hinged to a main body, the other end extends in an axial direction, the nut gear is sleeved on the leadscrew, and the driving device is configured to drive the nut gear to rotate, so that the nut gear is reciprocally linearly movable along the leadscrew to push the door to open or close relative to the main body.

Abstract: The present disclosure relates to a nut leadscrew type automatic door opening and closing mechanism, an automobile automatic door and an automobile. The nut leadscrew type automatic door opening and closing mechanism includes a driving device, a leadscrew, a nut pushing block and a pushing rod, wherein the driving device is fixedly connected to a door, the leadscrew is rotatably mounted on the door, the nut pushing block is sleeved on the leadscrew, a first end of the pushing rod is hinged to the nut pushing block, a second end of the pushing rod is hinged to a main body, the driving device is capable of driving the leadscrew to rotate, so as to allow the nut pushing block and the pushing rod to be reciprocally linearly movable along the leadscrew, and then allow the pushing rod to drive the door to open or close relative to the main body.

Abstract: A steel reinforced concrete column for a high rise building comprises a plurality of hot-rolled steel sections extending longitudinally through the concrete column. Each of these steel sections has an outward flange with an outer surface turned outwards in the concrete column, an opposite inward flange with an outer surface turned inwards in the concrete column, and a web connecting the outward flange to the inward flange. The steel sections are arranged in the concrete column so that the outer surfaces of their inward flanges at least partially delimit therein a central concrete core with n lateral sides and a transversal cross-section that forms an n-sided polygon, n being at least equal to three, and each of then lateral sides of the central concrete core being coplanar with the outer surface of the inward flange of at least one steel section.