Abstract: Embodiments of an optical amplification apparatus are disclosed which include a first optical amplifier, a second optical amplifier, and a mode exchanger. The first optical amplifier is connected to an input port of the mode exchanger, and the second optical amplifier is connected to an output port of the mode exchanger. The first optical amplifier is configured to amplify optical signals carried in a plurality of transmission modes of a few-mode fiber, the plurality of transmission modes of the few-mode fiber may be grouped into N groups, each group includes two transmission modes, and N is a positive integer greater than or equal to 1. The mode exchanger is configured to exchange the two transmission modes carrying optical signals in each group. The second optical amplifier is configured to amplify the optical signals that are carried in the two transmission modes in each group and whose modes are exchanged.

Abstract: A secondary battery includes a negative electrode plate and a positive electrode plate. The negative electrode plate includes a negative electrode active material. The positive electrode plate includes a positive electrode active material. The negative electrode active material is selected from one or more of a silicon-based material and a tin-based material. The positive electrode active material has a molecular formula of M1xMnyM2zOaAb. M1 represents one or two of Mg and Al. M2 represents one or two of Co and Ni. A represents one or more of N, P, and S. 0<x?3, 0<y?6, 0?z?6, 0<y+z?8, 0=<a?12, 0?b?12, and 0<a+b?15.

Abstract: An optical fiber filter includes a fiber core, inner cladding, and outer cladding. A refractive index of the fiber core, a refractive index of the inner cladding, and a refractive index of the outer cladding progressively decrease in sequence. The fiber core is configured to transmit at least two mutually different first optical signal modes, the inner cladding is configured to transmit at least two mutually different second optical signal modes, and at least one fiber grating is etched on the fiber core. At least part of optical power of a target first optical signal mode is coupled to only a target second optical signal mode at the fiber grating. The target first optical signal mode is one of the at least two first optical signal modes, and the target second optical signal mode is one of the at least two second optical signal modes.

Abstract: The present disclosure relates to a solar outdoor warm tent. The tent comprises a bottom plate and an upper cover, wherein the upper cover is closed on the bottom plate and an activity space is enclosed between them, the upper cover and the bottom plate are both made of composite plate materials, and the composite plate material comprises a foamed polypropylene layer in the middle and self-reinforced polypropylene layers on two sides.

Abstract: A projection display system includes a light source assembly, a wavelength adjusting assembly, and a modulation assembly. The light source assembly is configured to emit projected light. The wavelength adjusting assembly is disposed on an optical path of the projected light for adjusting spectrum of the projected light, and a ratio of luminous efficacy of adjusted projected light to luminous efficacy of monochromatic light corresponding to a dominant wavelength of the projected light is greater than a preset ratio, and color gamut of the adjusted projected light satisfies a preset color gamut coverage. The modulation assembly is disposed on a light exiting path of the wavelength adjusting assembly and configured to modulate light emitted by the wavelength adjusting assembly and output corresponding image light to form projection image.

Abstract: Provided are a display panel and a manufacturing method thereof, and a display device. The display panel includes a base substrate and a plurality of sub-pixels. At least one sub-pixel includes a light-emitting element; a first transistor; a capacitor including a first electrode and a second electrode plate; a second transistor including a second active layer including a third and a fourth electrode area, and a second channel area; and a third transistor including a third active layer, and a third gate electrode connected to a reset line, the third active layer including a fifth electrode area, a sixth electrode area directly connected to an initialization line via a via hole, and a third channel area. An orthographic projection of the initialization line on the base substrate is located between orthographic projections of the reset line and the gate line on the base substrate.

Abstract: A manufacturing method for a display panel, the display panel, and a display device are provided. The manufacturing method includes: providing a driving backplane; forming an inorganic encapsulation layer on the driving backplane using a vapor deposition method, so that the inorganic encapsulation layer includes a main encapsulation layer covering the display area and a part of the peripheral area and an infiltration layer extending from the main encapsulation layer towards a direction away from the display area; forming an inorganic layer on a side of the inorganic encapsulation layer away from the driving backplane, so that the inorganic layer includes a first inorganic layer covering the main encapsulation layer and a second inorganic layer extending from the first inorganic layer towards the direction away from the display area; and simultaneously etching the second inorganic layer and the infiltration layer using a same mask to remove them.

Abstract: An aluminum alloy and application thereof are disclosed. Based on a total mass of the aluminum alloy, the aluminum alloy includes: 7%-11% Si, 0.4%-1.0% Fe, 0.001%-0.2% Mg, 0.001%-0.2% Cu, 0.001%-0.2% Zn, 0.005%-0.1% Mn, 0.01%-0.06% Sr, 0.003%-0.05% B, 0.01%-0.02% Ga, 0.001%-0.01% Mo, 0.001%-0.2% Ce, 0.0003%-0.02% La, and balanced by aluminum and impurity elements, where a total amount of the impurity elements is less than 0.1%.

Abstract: The present disclosure provides an organic light emitting display panel and a fabricating method thereof, and a displaying device.

Abstract: The present disclosure relates to a copper based microcrystalline alloy and a preparation method thereof, and an electronic product. In percentage by weight and based on the total amount of the copper based microcrystalline alloy, the copper based microcrystalline alloy includes: 30-60 wt % of Cu; 25-40 wt % of Mn; 4-6 wt % of Al; 10-17 wt % of Ni; 0.01-10 wt % of Si; and 0.001-0.03% of Be.

Abstract: 1,5-dihydro-2,4-benzodiazepine-3-one derivatives, such as a compound represented by formula I, acts on 5-HT2A and 5-HT2C receptors. The selectivity for 5-HT2A is superior or similar to pimavanserin. The derivative is used for treating schizophrenia or Parkinson’s disease, dementia-related behavioral disorders, and psychosis. The antipsychotic activity of the compound is equivalent to that of pimavanserin, the side effects of sedation and and worsening of exercise are less than those of pimavanserin, and cardiotoxicity is less than that of pimavanserin.

Abstract: The present disclosure discloses a system and method for testing the spatial distribution uniformity of an alkali metal atom number density of an atom magnetometer. The system includes a detection laser, a laser beam expanding system, a polarizing element, a magnetic shielding system, an alkali metal atom gas chamber, a beam profile camera, a beam splitting prism, etc., which are sequentially arranged in a light advancing direction. In the method, based on an optical absorption principle, light intensity attenuations of linearly polarized light before and after passing through the alkali metal gas chamber are tested by using the beam profile camera with pixels in the level of um, a two-dimensional distribution matrix of an atom number density in space is calculated, and the distribution uniformity of the atom number density is analyzed by using a discrete coefficient.

Abstract: A filter includes a first filter component coupled to a second filter component. The first filter component is configured to receive an optical signal, and filter the optical signal based on a first power difference of signals transmitted on a plurality of frequency bands in the optical signal, where the first power difference includes a difference caused by a first doped optical fiber. The second filter component is loaded with a first driving electrical signal used to control a frequency response of the second filter component. The second filter component is configured to filter, using the frequency response based on a second power difference of the signals transmitted on the plurality of frequency bands, an optical signal obtained after the filtering by the first filter component.

Abstract: An aluminum alloy is provided. Based on the total weight of the aluminum alloy, in percentage by weight, the aluminum alloy includes: 11-15% of Zn; 7.5-9% of Si; 1.2-2% of Cu; 0.3-0.5% of Mn; 0.05-0.3% of Mg; 0.1-0.2% of Ni; 0.001-0.04% of Sr; 0.05-0.3% of Ti; 0.01-0.15% of Fe; and 72.51-79.79% of Al.

Abstract: A light-translucent artificial leatherette (e.g., for use in an automotive interior) consists of a surface treating agent layer and a multilayer polymer material construction. The multilayer polymer material construction is comprised of at least an epidermal layer, which is a pigmented layer, and a surface treating agent layer, which is affixed to the epidermal layer. The light-translucent artificial leatherette is further comprised of a light-shielding layer, within which an inverse mask or light-transparent patterned structure is incorporated. The light-shielding layer is positioned between two laminates of the multilayer polymer construction adjacent thereto. The light-shielding layer is positioned directly between two laminates of the multilayer polymer construction adjacent thereto, and an inverse mask pattern is embedded into the light-shielding layer.

Abstract: Provided is a novel coronavirus vaccine using replication-deficient human type 5 adenovirus as a vector. The vaccine takes the replication-deficient human type 5 adenovirus that is lack of E1 and E3 in a combined mode as a vector, and HEK293 cells that integrate adenovirus E1 genes serve as a packaging cell line, and protective antigenic genes carried are optimized COVID-19 (SARS-CoV-2) S protein genes (Ad5-nCoV). The vaccine has good immunogenicity in both mouse and guinea pig models and can induce the body to produce a strong cellular and humoral immune responses in a short time. Research on the protective effect of hACE2 transgenic mice shows that 14 days after a single Ad5-nCoV immunization, the viral load in lung tissues can be significantly reduced. It shows that the vaccine has a good immune protection effect against COVID-19.

Abstract: A preparation method for producing a light-transparent artificial leather comprises the steps of: mixing, stirring, grinding, filtering and defoaming primary raw materials, including toner with a particle size of 0.5˜10 nm, polymer powder and a plasticizer, to produce a light-transparent pigment; mixing the light-transparent pigment with secondary raw materials, including polymer powder, a plasticizer, a stabilizer and an inorganic additive, and stirring, grinding, filtering and defoaming the mixture to produce a light-transparent epidermal layer material; mixing a base fabric, glue and a support layer material with the epidermal layer material and making the mixture into a semi-finished artificial leather product, which comprises the light-transparent epidermal layer, a support layer, a glue layer and a base fabric; and applying a surface treating agent on to the surface of the light-transparent epidermal layer to produce a light-transparent artificial leather (e.g., for an automobile interior).

Abstract: An aluminum alloy and a preparation method thereof are provided. In percentage by mass, the aluminum alloy includes: 8-11% of Si, 2-3% of Cu, 0.7-1.1% of Mg, 0.7-1.5% of Mn, 0.01-0.015% of Sr, 0.01-0.015% of Cr, 0-0.4% of Fe, 0.02-0.1% of Ti, 0.01-0.02% of Ga, 0.004-0.02% of B, 0-2% of Zn, and the balance of Al and less than 0.1% of other elements.

Abstract: Provided is a method for manufacturing an array substrate. The method includes: providing a base substrate with a conductive pattern layer, wherein the base substrate is provided with a display region and a peripheral region disposed around the display region, wherein the conductive pattern layer includes a plurality of conductive lines disposed in the peripheral region; forming an electrode material film layer on the conductive pattern layer; forming a mask layer on the electrode material film layer, wherein the mask layer includes a plurality of electrode layer patterns disposed in the display region and protection patterns disposed above the conductive lines; and etching the electrode material film layer and removing the mask layer.

Abstract: A display panel and a display apparatus are provided. The display panel includes an array substrate and an encapsulation cover plate, wherein a first power supply line and a second power supply line are arranged on a same layer on the array substrate, the second power supply line is disconnected by an opening, a first connecting line is connected with the first power supply line through the opening, a second connecting line is connected with the second power supply line, and the second power supply lines on both sides of the opening are electrically connected by a jumper arranged on the encapsulation cover plate.