Abstract: A photocurable composite hydrogel matrix precursor, a preparation method thereof and a scaffold with same. The photocurable composite hydrogel matrix precursor includes gelatin methacrylate, sodium alginate, sodium carboxymethyl cellulose and chondroitin sulfate, where the mass ratio of a photoinitiator to the gelatin methacrylate to the sodium alginate to the sodium carboxymethyl cellulose to the chondroitin sulfate is (0.2-0.3):(8-10):(1-3):(0.6-0.8):(0.05-0.07).

Abstract: Disclosed is a non-volatile memory cell, random-access memory and methods of operation thereof which solve the existing problem of lack of voltage-controlled FReRAM memory cell architecture and control methods, which relate to the technical field of non-volatile memory. The memory cell comprises a first memory element including a first ferroelectric tunnel junction (FTJ) device programmable to one of a high or low resistance state, and a second memory element comprising a second FTJ device programmable to the other of a high or low resistance state, and wherein the memory cell stores a data bit represented by the opposite resistance states of the first FTJ device and the second FTJ device. The memory cell is read by comparing the resistance states of the first FTJ device and the second FTJ device during a read operation. Also disclosed are methods of performing read and write operations on the memory cell, and a random-access memory comprising an array of the memory cells.

Abstract: A compound of Formula (I) is provided that has been shown to be useful for treating a disease caused by a viral infection: wherein R1, R2, R3, A, L, m, n, p and q are as defined herein.

Abstract: The present invention provides an oriented metal electrode unit and preparation methods and applications thereof, relating to the technical field of semiconductor devices, comprising: a Si substrate covered with an amorphous SiO2 layer; a buffer layer, covered on said SiO2 layer, comprising Ta, Cr, TiN, TaN or MgO; a seed layer, covered on said buffer layer, comprising A3BN, wherein A=Cu or Fe; B=Pd or Pt; or MnxN1-x, wherein 0<x<1; a metal electrode layer, prepared on the basis of said seed layer, having a (00l) crystalline orientation; said buffer layer, said seed layer and said metal electrode layer having consistent lattice constants, solving the problem of existing semiconductor devices having poor performance in obtaining crystalline metal electrodes on amorphous SiO2 layers.

Abstract: The present invention provides a preferentially orientated electrode film and preparation methods thereof, relating to the technical field of thin film preparation, comprising a silicon-based substrate and a primary seed layer, a secondary seed layer and a bottom electrode layer grown sequentially on said substrate; said primary seed layer being an AxB1-xN film or an A3-xB1-xN film, wherein A?Cu, Fe; B?Pd, Pt; Ox1; in which said secondary seed layer is made of one or more of the following films: chromium nitride film, titanium nitride film, tantalum nitride film, magnesium oxide film; and said bottom electrode layer is made of one or more of the following films: a platinum film, a titanium nitride film, a gold film, a strontium ruthenate film, or a niobium doped strontium titanate film, which has a preferential orientation in the (00/) crystallographic direction, to solve the problem that the existing films with (00/) preferential orientations are not obtainable on a Silicon based substrate.

Abstract: A method of rapid constructing human cerebral cortical organoids by 3D bioprinting and an application including preparing microfluidic chips, preparation of hydrogel of human cerebral cortical organoids, and printing of human cerebral cortical organoids. The microfluidic chip comprises a mixed-flow channel layer, liquid pool layer, microporous array layer, human cerebral cortical organoid culture layer, and culture medium recovery layer; the human cerebral cortical organoid hydrogel has gelatin, alginate, and hyaluronic acid; printing directly human cerebral cortical organoids in microfluidic chips by FRESH printing method, obtaining human cerebral cortical organoid chips after packaging. The application directly constructs large-scale human cerebral cortex-like with three layers of mutually connected structures in situ in organ chip through 3D bioprinting, simulates cerebrospinal fluid circulation through perfusion culture.

Abstract: The invention relates to a hydraulic system, method, and integrated valve block for a slewing mechanism, comprising a first and second cylinder. The rod cavity of the first cylinder connects to the rodless cavity of the second cylinder through the first oil circuit, first hydraulic control check valve, and fourth oil circuit. The rodless cavity of the first cylinder connects to the rod cavity of the second cylinder through the second oil circuit, second hydraulic control check valve, and third oil circuit. The first oil circuit is connected to the directional valve through the sixth oil circuit, and the second oil circuit is connected to the directional valve through the fifth oil circuit. The directional valve is connected to the hydraulic pump and oil tank. The first hydraulic control check valve is installed between the first and fourth oil circuits, and the second hydraulic control check valve is between the second and third oil circuits.

Abstract: A method for steady-state control of cutting state, implemented based on computer numerical control (CNC) machine tools or cutting lathes. The method comprises: fitting parameters of a stored energy evolution model of a workpiece material to be machined; discretizing primary shear zone into multiple infinitesimals along normal direction of main shear plane; introducing equivalent cutting edge model, inputting pre-used cutting parameters, calculating strain and strain rate of each infinitesimal and analyzing temperature of each infinitesimal; deducing and solving differential equation of each infinitesimal of stored energy to position of the primary shear zone by taking initial shear plane of the primary shear zone as model boundary; determining application values of cutting parameters according to solved results; and, controlling and adjusting the cutting tool in the actual cutting process to cut the workpiece material to be machined with the application values.

Abstract: A method for prepring a porous aerogel scaffold includes: adding a photoinitiator and polyethylene glycol diacrylate in a buffer solution, dissolving by heating and evenly mixing, adding Pluronic® F127 (Poloxamer 407) into the mixed solution, and standing at a low temperature to obtain an aerogel scaffold material; printing a hydrogel scaffold by using a 3D printing technology, and performing UV irradiation so that a cross-linking of the hydrogel scaffold is caused to form a three-dimensional scaffold with a stable structure, performing low-temperature soaking to remove Pluronic® F127 (Poloxamer 407), and then freeze drying the three-dimensional scaffold to obtain the porous aerogel scaffold.

Abstract: Disclosed is a ferroelectric tunnel junction device and memory cell, and relates to the technical field of ferroelectric tunnel junction devices, comprising a ferroelectric tunnel barrier layer; a first electrode layer on one side of the ferroelectric tunnel barrier layer; a second electrode layer on the other side of the ferroelectric tunnel barrier layer; and a first interfacial layer at the interface between the first electrode layer and the ferroelectric tunnel barrier layer. The first electrode layer comprises a first antiperovskite material and the first interfacial layer comprises a second antiperovskite material that differs from the first antiperovskite material in composition, and preferably in at least the occupancy of corner sites or the centre sites. Also disclosed is a memory cell comprising the ferroelectric tunnel junction device, wherein the data is recordable as a direction of electric polarisation of the ferroelectric tunnel barrier layer.

Abstract: An alumina-based ceramic tool material with low thermal expansion and a preparation process thereof, accordingly, the ceramic tool material may have both the high hardness of alumina ceramics after the hot pressing sintering, and reduces the thermal expansion coefficient of the overall ceramic material by adding the Sc2W3O12 as the negative thermal expansion phase, which improves the thermal shock resistance of ceramic tools in high-speed cutting engineering and meets the requirements of large temperature range during the machining of nickel-based superalloys. Moreover, the composite material does not use metal binder and has strong thermal stability even in the high-speed machining under extreme heat-force-chemistry coupling, so it has a high machining compatibility for nickel-based superalloys.

Abstract: The invention provides a magnetic device and memory cell, and relates to the field of magnetic devices for memory including perovskite-based electrode materials, comprising: a spacer layer; a first magnetic electrode layer located on one side of the spacer layer; and a second magnetic electrode layer located on the other side of the spacer layer; the spacer layer comprises a perovskite nitride material or perovskite oxynitride material; the first magnetic electrode layer and the second magnetic electrode layer respectively comprises a metallic antiperovskite nitride material; the relative net magnetization orientation of the first magnetic electrode layer and the second magnetic electrode layer is switchable between a parallel net magnetization state or an antiparallel net magnetization state to control a spin-polarised current therethrough; the memory cell is applied to a memory or storage device, comprising the magnetic device, wherein the data is recordable as a parallel or antiparallel net magnetization s

Abstract: A hydrogel for cell-laden bioprinting, bioink, and a preparation method and an application thereof, relates to the technical field of biomedical polymer hydrogels. The hydrogel for cell-laden bioprinting is polymer gel formed by adding a cell-specific material into a matrix of alginate and gelatin and crosslinking and curing, wherein the cell-specific material is polypeptide selected according to different laden cells. The structures printed using the hydrogel may have the advantages such as adjustable mechanical properties, adjustable porosity, high biocompatibility, high printing accuracy, and high customizability, which may widely support the printing of human tissues and organs such as spinal cord, cartilage, and heart, and has good prospects for applications in tissue repair, organ transplantation and so on.

Abstract: Systems, apparatus, articles of manufacture, and methods to reduce discoloration of solder resists in immersion cooling environments are disclosed. An example apparatus includes a substrate. The example apparatus further includes a solder resist layer on an exterior surface of the substrate. The solder resist layer does not include a transition metal.

Abstract: A method for preparing a shell-bionic ceramic tool and a shell-bionic ceramic tool, wherein the shell-bionic ceramic tool includes alternating stacks of ceramic powders with different components, pressing a ceramic green body using a cold briquetting method, carrying out pre-pressing once using a graphite indenter on a working surface thereof after each layer of the ceramic powder being loaded, and pressing a last layer using a graphite rod, and then pressing a whole ceramic green body with a certain pressure to promote a bonding of the layers of ceramic powder, which in turn gives a complex shape to an interface between the layers, increases a bonding area between the layers, and plays the role of hindering crack expansion, extending the crack expansion path, and improving the bonding strength of the interface; after then, hot-pressed sintering is used to densify the ceramic green body to obtain the shell-bionic ceramic tool.

Abstract: A monocrystalline silicon micro-nano dual-scale anti-reflection texture and a preparation method therefor. The preparation method combines nanosecond-laser-assisted waterjet near-damage-free processing and femtosecond laser scanning, and subsurface damage caused by a re-cast layer phenomenon and a hot crack in a monocrystalline silicon laser texturing process can be effectively reduced by combining a nanosecond-laser-assisted waterjet near-damage-free processing technology and an ultra-short pulse femtosecond laser cold processing technology; and meanwhile, a micro-scale frame structure and a nano-scale structure can be flexibly modified respectively by adjusting nanosecond-laser-assisted waterjet technological parameters and femtosecond laser technological parameters, a geometry light trapping effect and an effective dielectric effect can be achieved in a micro-nano dual-scale hybrid structure at the same time, and surface reflection is reduced.

Abstract: A compound of Formula (I) is provided that has been shown to be useful for treating a disease caused by a viral infection: wherein R1, R2, R3, A, L, m, n, p and q are as defined herein.

Abstract: A method and device for attaching a display cover are provided. In an attaching method, a display panel is fixed to a sealing mechanism, and a cover is fixed to a bottom of an accommodating cavity of a housing. By filling a sealed space of the sealing mechanism with a pressurized gas, while a stretching mechanism pushes the display panel to deform, the display panel and the cover are bonded together under an action of the stretching mechanism and the pressurized gas. This alleviates an issue of a limited molding process in realization of three-dimensional curved surface of current flexible OLED and flexible micro-LED displays.

Abstract: The invention relates to a hydraulic system, method, and integrated valve block for a slewing mechanism, comprising a first and second cylinder. The rod cavity of the first cylinder connects to the rodless cavity of the second cylinder through the first oil circuit, first hydraulic control check valve, and fourth oil circuit. The rodless cavity of the first cylinder connects to the rod cavity of the second cylinder through the second oil circuit, second hydraulic control check valve, and third oil circuit. The first oil circuit is connected to the directional valve through the sixth oil circuit, and the second oil circuit is connected to the directional valve through the fifth oil circuit. The directional valve is connected to the hydraulic pump and oil tank. The first hydraulic control check valve is installed between the first and fourth oil circuits, and the second hydraulic control check valve is between the second and third oil circuits.