Abstract: The invention discloses an electrocatalyst includes a quasi-two-dimensional metal nanosheet having a thickness ranging between 4 nm and 12 nm. The quasi-two-dimensional metal nanosheet includes platinum (Pt), nickel (Ni), and niobium (Nb). The quasi-two-dimensional metal nanosheet has a Turing structure morphology including one or more of Turing stripes and Turing spots assembled by individual metal nanocrystals having different orientations via constrained orientation attachment.

Abstract: An evaporator for solar desalination and a preparation method thereof and use thereof are provided. The evaporator has a porous skeleton, interconnected channels, and a hydrophobic decoration. The interconnected channels are formed from gaps of the porous skeleton, and the hydrophobic decoration is positioned on the surface of the porous skeleton. The evaporator is for sustainable solar water evaporation even in highly salty water. Specifically, the continuous evaporation for 24 h without salt precipitation in 20 wt % NaCl solution can be realized.

Abstract: An adsorbent, a preparation method therefor and use thereof are provided. The adsorbent has a liquid channel, and the liquid channel has a low-tortuous porous structure. The adsorbent can realize fast and large-scale absorption of various liquids without consuming external energy and not requiring additional apparatuses when in use. The adsorbent can be used for efficient, safe and comfortable medical sampling and can also be used for recovery of various liquids.

Abstract: An ultraflat and ultralow-friction metallic glass thin film is fabricated. The metallic glass thin film is a binary alloy, wherein a content of one metal element of the binary alloy is between 45 atomic % and 64 atomic %. The metallic glass thin film has an atomically smooth surface with a surface roughness Ra less than 0.1 nm and a total height of profile Rt less than 0.15 nm; the friction coefficient is below 1×10?2. Due to the metallic glass thin film being treated by ion bombardment, the metallic glass thin film is thermally ultrastable.

Abstract: The present invention provides a method of in situ 4D printing of high-temperature materials including 3D printing a structure of an ink including a precursor. The structure is treated with controlled high energy flow to create a portion which has a different coefficient of thermal expansion/thermal shrinkage ratio. The structure is heated and the difference in the coefficient of thermal expansion creates an interface stress to cause a selected level of deformation. Alternatively, two structures with different coefficients of expansion/thermal shrinkage ratio may be printed. Thermal treatment of the two structures creates an interface stress to cause a selected level of deformation.

Abstract: The present disclosure discloses a method for synthesizing a speech. The method includes generating the speech based on a text with a speech synthesis model, wherein the speech synthesis model includes an embedding layer, a speech synthesis layer, and a position layer; and training the speech synthesis model when an evaluation index meets a preset condition, wherein the evaluation index includes one or more quality indexes determined based on at least a part of the text and at least a part of the speech.

Abstract: The present disclosure relates to a differential pressure driven burst-pipeline emergency blocking system. The system includes a valve body with flanges on opposite axial ends, a cylindrical valve sleeve connected with the inner wall of a flange end and having a through hole in the valve sleeve wall. The wall of the valve sleeve is in movable fit with a valve spool having a U-shaped section. The working fluid through hole in the valve sleeve is communicated with the inner chamber of the valve body and can be closed by a cylindrical surface of the valve spool. A horizontal push rod is in movable fit with a central hole at the left end of the valve spool, and opposite ends of the horizontal push rod are in movable fit with axial orifices of left and right support seats in the valve body respectively.

Abstract: A virtual keyboard setting method includes: determining an operation region and a trigger region, the operation region being a region operated in a screen for using an input method, and the trigger region being a region covered by an external entity when touching the screen; determining a display region of a virtual keyboard according to the operation region; determining an area of a virtual key in the virtual keyboard according to the trigger region; and setting the virtual keyboard according to the display region of the virtual keyboard and the area of the virtual key.

Abstract: The present disclosure relates to sensor technology, and provides a method, an apparatus, and a system for vibration measurement for a sensor bracket as well as a movable device. The method is applied in a system for vibration measurement for the sensor bracket. The system includes the sensor bracket to be measured that is mounted on a movable device, and a marker on the sensor bracket to be measured, and a first sensor provided on the sensor bracket to be measured for collecting marker information. The method includes: collecting the marker information of the marker on the sensor bracket to be measured using the first sensor; determining a vibration measurement reference point based on the marker information, and obtaining vibration condition data of the vibration measurement reference point; and determining a vibration evaluation result for the sensor bracket based on the vibration condition data of the vibration measurement reference point.

Abstract: The present disclosure discloses a method for synthesizing a speech. The method includes generating the speech based on a text with a speech synthesis model, wherein the speech synthesis model includes an embedding layer, a speech synthesis layer, and a position layer; and training the speech synthesis model when an evaluation index meets a preset condition, wherein the evaluation index includes one or more quality indexes determined based on at least a part of the text and at least a part of the speech.

Abstract: The present invention provides a method of fabricating a catalytic reaction material. A solution of a carbon precursor compound and a noble metal precursor compound is prepared; the carbon precursor compound includes a salt component. The solution is recrystallized the solution to form recrystallized complexes including both the carbon precursor compound and the noble metal precursor compound. The recrystallized complexes are calcined to create a salt template for generation of two-dimensional carbon nanosheets embedding isolated noble metal atoms. Further calcining and washing decomposes the salt template to produce two two-dimensional carbon nanosheets embedding isolated noble metal atoms, each nanosheet having a thickness of approximately 1 to approximately 10 nanometers.

Abstract: This application provides a driving switching mechanism for a stapling instrument. An actuation driving assembly includes a driving sleeve for driving an end effector to perform a closing action and a knife bar driving rod for driving the end effector to perform a stapling action. A handle driving assembly includes a driving handle and a knife bar driving assembly which includes a knife driving member and a handle driving connecting member. The handle driving connecting member is connected to a handle driving portion. The knife driving member is movably connected to the handle driving connecting member, and is movable relative to the handle driving connecting member to a driving position or a driving disengagement position. When the knife driving member is in the driving position, the knife driving member and the knife bar driving rod are engaged as the handle driving portion moves toward a second position.

Abstract: A Raman detection system has a Raman spectrometer and a fixing light shielding stand. One end of the fixing light shielding stand is fixedly connected to the Raman spectrometer, and the other end is disposed with an entrance groove for a needle-like SERS probe to enter. A slot for fixing the needle-like SERS probe is formed at an end of the entrance groove, and the slot and the needle-like SERS probe match in shape and size. The Raman detection system has a fixing light shielding device with a dark color groove and a focal length. The groove can be used for limiting the rolling of the curved surface structure of the needle-like SERS probe. A laser can be focused on the curved surface more accurately by adjusting the distance from the instrument detector to the SERS probe.

Abstract: A method for microengineering a gradient structure on a metal surface. A metal surface including at least first, second, and third metal surface regions is exposed to a metal-removing agent. A portion of surface metal atoms is removed by the metal-removing agent in each of the first, second, and third metal surface regions. Sequential metal removal processes expose only the second and third regions to the metal-removing agent, followed by exposing only the third region to the metal-removing agent. A gradient metal surface is formed having different properties in each of the first, second, and third metal surface regions. In a further aspect, quantitative surface-enhanced Raman spectroscopy may be performed using the treated metal surface. An amount of an analyte is determined based on its position in one of the first, second, or third metal surface regions.

Abstract: An ultraflat and ultralow-friction metallic glass thin film is fabricated. The metallic glass thin film is a binary alloy, wherein a content of one metal element of the binary alloy is between 45 atomic % and 64 atomic %. The metallic glass thin film has an atomically smooth surface with a surface roughness Ra less than 0.1 nm and a total height of profile Rt less than 0.15 nm; the friction coefficient is below 1×10?2. Due to the metallic glass thin film being treated by ion bombardment, the metallic glass thin film is thermally ultrastable.

Abstract: Disclosed is a lens, comprising a lens element which comprises a first sub-lens and at least two second sub-lenses. The second sub-lens has a non-rotationally symmetrical structure, the first sub-lens comprises a first active clear portion, and the second sub-lens comprises a second active clear portion, wherein the second active clear portions of any two second sub-lenses are rotationally symmetrical with respect to an incident axis; the first active clear portion is configured for an incident beam to pass therethrough so as to form a first image on an image side of the lens; and the second active clear portion is configured for the incident beam to pass therethrough so as to form a second image on the image side of the lens, the number of second images being the same number as the number of second active clear portions, and the first image and each second image being spaced apart from each other.

Abstract: A method for making inorganic mineral hydrogels is provided. In one aspect, a first solution including one or more metal cations from one or more inorganic precursors is used. The metal cations are one or more of Fe, Mg, Ca, Co, Ni, Zn, Ti, Cu, Sn, or Mn. A second solution includes one or more polyoxometalates of Mo, W, V, Nb, or Ta. The first and second solutions are mixed together to form the inorganic mineral hydrogel. In one example, an aqueous solution of ferric chloride hexahydrate (FeCl3·6H2O) is mixed with an aqueous solution of ammonium molybdate tetrahydrate ((NH4)6Mo7O24·4H2O), under ambient conditions. The two reactants first form a yellow precipitate (FeMo2Ox(OH)y), which subsequently dissolves back into the solution to gradually produce a viscous hydrogel that traps a large volume of water.

Abstract: A lens has an incidence axis, and comprises a lens element. The lens element comprises at least two sub-lenses. The sub-lenses are non-rotationally symmetric structures. Each of the sub-lenses comprises an effective light transmission portion. Any two effective light transmission portions of the lens element are rotationally symmetric relative to the incidence axis. The effective light transmission portions of the lens element allow an incident light beam to pass therethrough so as to present mutually separate formed images at an image side of the lens. The number of formed images is equal to the number of sub-lenses of the lens element.

Abstract: Disclosed herein is a method of detecting zinc pyrithione (ZPT) in a sample such as water, waste water, shampoos, etc. The method includes steps of, (a) contacting the sample with a substrate having a layer of metal nanostructure deposited thereon thereby coating the layer of metal nanostructure of the substrate with the sample; and (b) subjecting the sample coated substrate to Raman spectroscopy analysis; wherein, the presence of peaks at 575, 829, 1136 and 1545 cm?1 in Raman spectrum indicates the presence of ZPT in the sample. According to embodiments of the present disclosure, the method may detect ZPT in a concentration ranging from 0.1 ng/mL to 8 ?g/mL.