Abstract: A crystal of a viral protease inhibitor and a use. The present invention specifically relates to a crystal form of a compound 1 or a pharmaceutically acceptable salt thereof and a use thereof. The present invention also relates to a preparation method for the crystal form and a composition and pharmaceutical composition comprising the crystal. The crystal form is stable, has high yield, involves mild crystallization conditions, is suitable for industrial production, and can well meet the requirements of the pharmaceutical industry.

Abstract: A recyclable and readily washable low-density label and a recovery method therefor are disclosed, the recyclable and readily washable low-density label is prepared by surface-modifying a low-density heat-shrinkable film with a surface modifier; the density of the low-density heat-shrinkable film is less than 0.96 g/cm3; the surface modifier is prepared via a sol-gel process using tetraethyl orthosilicate, N-[2-(benzylamino)ethyl]-3-aminopropyltrimethoxysilane, and acetoxyethyltrimethoxysilane. In the present application, the surface-modified label not only improves ink adhesion and stability on its surface but also enables rapid separation of the label via simple flotation during recovery, and allows effective washing of the ink from the label in a washing solution, thereby enhancing ink removal efficiency and achieving impurity-free label recovery.

Abstract: A positive electrode material, a preparation method of same, a positive electrode plate, a secondary battery, and an electrical device are described. The positive electrode material includes a ternary positive electrode substrate and optionally a coating layer. The coating layer coats a surface of the ternary positive electrode substrate. The ternary positive electrode substrate includes Li, Ni, Al, and an M element. The M element includes a combination of one or more of Mn, Co, Ti, Zr, W, Nb, Mo, Si, Mg, B, Cr, or Ta. A volume-based particle size distribution curve of the positive electrode material is a bimodal curve.

Abstract: The provided is a multidimensional evaluation method for AI game algorithms in synchronous recovery of power networks. The method achieves a systematic quantitative assessment of AI algorithms for resisting high-power electromagnetic pulse-induced loss of synchronization, covering both system-level and node-level indicators, while supporting adaptive testing across multiple topological scenarios.

Abstract: The provided is a high-robustness power grid design method based on parameter-adjustable heterogeneous modeling.

Abstract: A washing control method and apparatus for a cleaning device or a cleaning system, a computer-readable storage medium and an electronic device are disclosed and relate to the field of smart control technologies.

Abstract: A positive electrode material, including a core and a shell layer are provided. In some embodiments, a molecular formula of the core is Li1+aNixCoyMn1-x-yM1zO2, 0.8?x<1.0, 0<y<0.2, 0<a<0.1, 0?z<0.1, and M1 is selected from at least one of Al, Ta, and B; and a molecular formula of the shell layer is Li1+bComAlnNb1-m-nM2cO2, 0.85?m<1.0, 0<n<0.15, 0<b<0.1, 0.001?1-m-n?0.02, 0?c<0.05, and M2 is selected from at least one of W, Mo, Ti, Zr, Y, and Yb.

Abstract: A fiber array unit, and a method and apparatus for fabricating the fiber array unit. The fiber array unit includes optical fibers that define a two-dimensional array of fiber end faces, and are encapsulated by a matrix that holds the optical fibers in place. The fiber array unit is fabricated by seating optical fibers in grooves of an arcuate surface, and applying an amount of uncured matrix thereto. A substrate is moved into contact with the matrix and the matrix cured to bond the optical fibers to each other and the substrate. The substrate is moved away from the arcuate surface to release the bonded optical fibers. The process can be repeated to fabricate a fiber array unit having multiple rows of optical fibers.

Abstract: The present application provides a positive electrode active material and a preparation method thereof, a positive electrode sheet, a secondary battery, and an electric apparatus. The positive electrode active material includes a first positive electrode active material and a second positive electrode active material. The first positive electrode active material is a nickel-iron-manganese-copper quaternary sodium battery positive electrode active material; and a chemical formula of the second positive electrode active material is Naa2[Nib2Fec2Mnd2Me2]O2, where 0.8?a2<1, 0.01?b2<0.35, 0.01?c2<0.35, 0.01?d2<0.35, 0?e2<0.1, b2+c2+d2+e2=1, and the M element includes any one or more of Zn, Ti, Zr, Mg, La, Y, Co, Cr, Al, K, V, Mo, W, Sr, Ta, Nb, or Ca.

Abstract: The present disclosure relates to a crystalline form of a nitrogen-containing tetracyclic compound and a preparation method therefor. Specifically, provided in the present disclosure are a crystal form C, a crystal form F, a crystal form G, a crystal form H, a crystal form L, a crystal form M, a crystal form N, a crystal form R and a crystal form S of (S)-4-((S)-10-acryloyl-4-chloro-2-fluoro-14-oxo-8,8a,9,10,11,12-hexahydro-7H,14H-pyrazino[1?,2?:5,6][1,5]diazocin[3,2,1-hi]indazol-3-yl)-2-amino-7-fluorobenzo[b]thiophene-3-carbonitrile (formula 1), which crystal forms have good stability and can be better used in clinical treatment.

Abstract: The disclosure provides compounds of Formula I, compositions comprising the same, and methods of using the same, including use in treating a disease and/or a symptom of a disease caused by a coronavirus.

Abstract: A lithium-ion secondary battery comprises a positive electrode plate, wherein the positive electrode plate comprises a positive electrode current collector and a positive electrode active substance layer disposed on the positive electrode current collector, and the positive electrode active substance layer comprises a positive electrode active material. The positive electrode active material includes bulk particles comprising a bulk phase and a surface layer on the bulk phase. Bulk phases of the bulk particles are doped with element M2. The surface layer of the bulk particle is an exterior doped layer doped with element M3. Element M3 is selected from one or more of Mg, Al, Ca, Ce, Ti, Zr, Zn, and Y, and element M2 includes one or more of Si, Mo, V, Ge, Se, Nb, Rh, Pd, Te, and W.

Abstract: This application relates to a ternary precursor for making a material for positive electrodes in lithium batteries. In the ternary precursor, primary particles or whiskers of the ternary precursor are distributed in a radial direction. A deformation stacking fault probability fD of the ternary precursor is ?2.5%. This application further relates to a preparation method of the ternary precursor, a ternary positive electrode material, a secondary battery, a battery module, a battery pack, and an electric apparatus.

Abstract: The present disclosure relates to a growth hormone fusion protein and a preparation method and use thereof. The growth hormone fusion protein includes: a double-stranded structure having a first constant region Fc segment and a second constant region Fc segment; and a growth hormone linked to the first constant region Fc segment, the growth hormone has no methionine at an N-terminus thereof, and the growth hormone fusion protein was expressed by a non-mammalian cell expression system. According to the present disclosure, by adopting the fusion of the growth hormone and the double-stranded structure, the in vivo half-life of the growth hormone can be prolonged, and since each double-stranded structure only carries one growth hormone, the active site of the growth hormone is not affected by steric hindrance, and stronger activity is provided, and since the N-terminus of the growth hormone has no methionine, higher safety is provided.

Abstract: This application discloses a positive electrode active material and a preparation method thereof, a positive electrode plate, a lithium-ion secondary battery, and a battery module, battery pack and apparatus related thereto. The positive electrode active material includes secondary particles formed by agglomeration of primary particles, where the primary particles are a lithium transition metal oxide, and a transition metal site of the lithium transition metal oxide includes nickel and a doping element; and a Young's modulus E of the primary particles satisfies 175 GPa?E?220 GPa.

Abstract: A positive electrode active material and a preparation method therefor, a positive electrode plate, a battery cell, a battery, and an electric apparatus are provided, pertaining to the field of battery technology. The positive electrode active material includes: a positive electrode base material, and a first coating layer and a second coating layer sequentially coating a surface of primary particles of the positive electrode base material; where a concentration of lithium element in the first coating layer is lower than a concentration of lithium element in the positive electrode base material, and the second coating layer includes an ion conductor material. The technical solution of this application can improve cycling performance of a battery cell.

Abstract: A positive electrode active material, a preparation method thereof, a positive electrode plate, a secondary battery, and an electric apparatus. The positive electrode active material includes: a core and a first coating layer applied on at least a portion of an outer surface of the core, the core includes a lithium-containing nickel-based transition metal oxide, and the first coating layer includes cerium element. In the lithium-containing nickel-based transition metal oxide, a molar proportion of nickel element among all elements excluding lithium element and oxygen element ranges from 50% to 100%.

Abstract: This application discloses a positive electrode active material and a preparation method thereof, a positive electrode plate, a lithium-ion secondary battery, and a battery module, battery pack, and apparatus containing such lithium-ion secondary battery. The positive electrode active material includes bulk particles and an element M1-containing oxide coating layer applied on an exterior surface of each of the bulk particles. The bulk particle includes a nickel-containing lithium composite oxide. Bulk phases of the bulk particles are uniformly doped with element M2. A surface layer of the bulk particle is an exterior doped layer doped with element M3. Element M1 and element M3 are each independently selected from one or more of Mg, Al, Ca, Ce, Ti, Zr, Zn, Y, and B, and element M2 includes one or more of Si, Ti, Cr, Mo, V, Ge, Se, Zr, Nb, Ru, Rh, Pd, Sb, Te, Ce, and W.

Abstract: This application relates to a positive active material, a method for preparing same, an electrode plate, a secondary battery, and an electrical device. The positive active material includes: a core material, including a lithium-rich manganese-based positive electrode material; and a cladding layer, covering an outer surface of the core material, where the cladding layer includes an oxygen-ion conductor and a lithium-ion conductor.

Abstract: A positive electrode active material includes an active substance, where the active substance includes a lithium nickel manganese oxide, the lithium nickel manganese oxide includes a spinel phase, an X-ray diffraction pattern of the lithium nickel manganese oxide has a first diffraction peak at a diffraction angle 2? of 18° to 19° and a second diffraction peak at a diffraction angle 2? of 44° to 45°, the first diffraction peak corresponds to a crystal plane (111), and the second diffraction peak corresponds to a crystal plane (400); a peak intensity of the first diffraction peak is I(111), a peak intensity of the second diffraction peak is I(400), and I(111) and I(400) satisfy 2.5?I(111)/I(400)?4.0; and the lithium nickel manganese oxide satisfies a chemical formula LixMyNizMn2-y-zO4-k, where 0.8?x?1.05, 0?y?0.2, 0.3?z?0.7, ?0.1?k?0.5, and M includes one or more of B, Si, P, S, Nb, Mo, Ru, Te, Ce, Ta, and W.