Abstract: The disclosed embodiments relate to a video generation method, apparatus, device, and medium. The method comprises: obtaining product information of a target product; determining, based on the product information, character information corresponding to at least two target virtual characters; wherein the character information comprises character characteristics, character lines, and character appearance time; and generating a target video based on the character information of the target virtual characters; wherein the target video is a communication video of the at least two target virtual characters for the target product. The disclosed embodiments can directly generate a communication video of a plurality of virtual characters for the target product, requiring low cost and providing efficient production, thereby effectively showcasing and introducing the relevant product.

Abstract: Methods for improving parthenogenesis efficiency by DWT1 and BABY BOOM transcription factors in plants are provided. A rice embryo trigger transcription factor BABY BOOM1 can initiate embryogenesis when expressed in the unfertilized egg cell through a process called parthenogenesis (Khanday et al., 2019. Nature 565: 91-95). The parthenogenesis efficiency by BABY BBOM1 itself is 10-29%. This invention describes methods of high frequency of parthenogenesis by simultaneous expression of BABY BOOM and DWT1 transcription factors. When BABY BOOM1 and DWT1 are expressed together through egg cell-specific promoters, parthenogenesis efficiencies of up to 90% are achieved. These high parthenogenesis efficiencies are a prerequisite for field applications of synthetic apomixis in crop plants.

Abstract: This application provide an image sensor, a camera module, an electronic device, and a display system. The image sensor includes a metasurface layer and an optical-to-electrical conversion layer that are disposed in a stacked manner. The optical-to-electrical conversion layer is configured to convert light transmitted through the metasurface layer into an electrical signal. The metasurface layer has a first micro-nano structure layer, the first micro-nano structure layer includes a plurality of microstructure arrays, each microstructure array includes a plurality of structure units arranged in an array, and structures of structure units of at least two microstructure arrays are different. The optical-to-electrical conversion layer has a plurality of photosensitive areas, and the plurality of photosensitive areas are in a one-to-one correspondence with a plurality of structure units at the metasurface layer.

Abstract: A backlight display assembly and an apparatus on which the backlight display assembly is deployed are disclosed, to effectively improve light utilization of the backlight display assembly. The backlight display assembly includes a light filter layer, a spectrum splitting layer, and a backlight layer. The light filter layer includes a plurality of light filter units, and each light filter unit includes a plurality of different light filters. The spectrum splitting layer is disposed on one side of the light filter layer, and the spectrum splitting layer and the light filter layer are spaced from each other. The spectrum splitting layer includes a micro-nano structure including a plurality of strip structures, and an arrangement direction of the plurality of strip structures is consistent with an arrangement direction of the plurality of different light filters.

Abstract: An apparatus for heat transfer includes a device and a mechanism for transferring heat to or from the device. The mechanism includes a working fluid that includes a fluorinated aromatic compound having structural formula (I): where Q is a carbon atom or a nitrogen atom; G is an oxygen atom or a sulfur atom; each R1 is, independently, a fluoroalkenyl group having 2 to 11 carbon atoms and optionally comprises one or more catenated heteroatoms; each R2 is, independently, (i) a hydrogen atom or a fluorine atom; or (ii) a fluoroalkyl group or a fluoroalkenyl group having 1 to 9 carbon atoms and optionally comprises one or more catenated heteroatoms; each R3 is, independently, a hydrogen atom or a fluorine atom; x is 1-3; a is 1-2; y is 1-5; when Q is a carbon atom, z=6-y-a; and when Q is a nitrogen atom, z=5-y-a.

Abstract: Examples of a stereoscopic image text structure, an image text apparatus, and a terminal device are described. In one example, a stereoscopic image text structure includes a micro image text module and a micro lens array module that are sequentially stacked, and a stacking direction of the micro image text module and the micro lens array module is a first direction. The micro lens array module includes a plurality of micro unit structures arranged perpendicular to the first direction, and each micro unit structure has a micronano size. A medium is filled between any two adjacent micro lens units and between any two adjacent micro unit structures, and a refractive index of the medium is not equal to a refractive index of a micro unit structure.

Abstract: This disclosure discloses a light-transmitting plate, a mechanical part, and a photosensitive apparatus, and belongs to the field of polymer materials. The light-transmitting plate includes a transparent base and a transparent superhydrophobic layer. The transparent superhydrophobic layer includes a polymer film body and a nano array structure. The polymer film body is formed on a surface of the transparent base. The nano array structure is integrally formed on a surface that is of the polymer film body and that is away from the transparent base. The nano array structure is arranged at a single layer. An array periodicity of the nano array structure is less than or equal to a wavelength of a target light ray. The target light ray is a light ray transmitted through the light-transmitting plate. The light-transmitting plate provided in embodiments of this disclosure has self-cleaning performance and optical imaging performance.

Abstract: The present invention provides a polyethylene glycol derivative comprising a repeat unit having the structure of Formula (I) and a terminal group having the structure of Formula (II). The polyethylene glycol derivative provided by the present invention has good biocompatibility, due to the repeat unit having the structure of Formula (I); and can react with various groups such as amino, (acyl)hydrazino, and aminooxy with a fast reaction rate under mild reaction conditions, due to the o-phthalaldehyde terminal group having the structure of Formula (II). The polyethylene glycol derivative provided by the present invention is mixed with polyethylene glycol having an amino-containing terminal group in an aqueous medium, to rapidly form a chemically cross-linked hydrogel material. The hydrogel material has mild preparation conditions, fast gel-forming speed, high mechanical strength, and good stability.

Abstract: This application provides a floating optical device, an optical module, and an optical system that are configured to perform floating display. The floating optical device includes a focusing layer, a transmission layer, and a convergence layer that are sequentially stacked in a direction of an optical axis. The focusing layer includes a plurality of focusing units that are periodically arrayed. The convergence layer includes a plurality of convergence units that are periodically arrayed. The plurality of focusing units and the plurality of convergence units are in a one-to-one correspondence in the direction of the optical axis. In the focusing unit and the convergence unit that correspond to each other, the focusing unit is configured to modulate incident light rays, to concentrate incident light rays that are parallel to each other to a same incident concentration point on the incident surface of the transmission layer.

Abstract: Techniques are described for computer-implemented techniques for managing various aspects of the cardiac care pathway using machine learning. According to an embodiment, a method can include training an outcomes forecasting model to predict patient outcomes resulting from undergoing a cardiac valve procedure using multi-modal training data for a plurality of different patients, wherein the training comprising separately training different machine learning sub-models of the forecasting model to predict preliminary patient outcome data and mapping the preliminary patient outcome data to the patient outcomes, resulting in a trained version of the outcome forecasting model. The method further includes applying the trained version of the outcomes forecasting model to new multi-modal data for a new patient to predict the patient outcomes for the new patient resulting from undergoing the cardiac value procedure.

Abstract: The present invention provides synthetic nucleic acid sequences comprising 10-30 nucleotides of the N1 and N2 gene regions and/or the 3? non-coding region of the SARS-associated coronavirus Cov-2 (SARS-CoV-2) genome, and a synthetic nucleic acid sequence comprising 10-30 nucleotides of a nucleic acid sequence that is complementary to at least one of those regions. Also provided are compositions comprising the sequences, and uses of the sequences in diagnostic kits. The present invention further provides a primer and probe set for determining the presence or absence of SARS-associated coronavirus Cov-2 in a biological sample, wherein the primer set comprises at least one of the synthetic nucleic acid sequences. Also provided are a composition comprising the primer and probe set, and use of the primer and probe set in a diagnostic kit. Finally, the present invention provides kits and methods for determining the presence or absence of SARS-associated coronavirus Cov-2 (SARS-CoV-2) in a biological sample.

Abstract: A backlight display assembly and an apparatus on which the backlight display assembly is deployed are disclosed, to effectively improve light utilization of the backlight display assembly. The backlight display assembly includes a light filter layer, a spectrum splitting layer, and a backlight layer. The light filter layer includes a plurality of light filter units, and each light filter unit includes a plurality of different light filters. The spectrum splitting layer is disposed on one side of the light filter layer, and the spectrum splitting layer and the light filter layer are spaced from each other. The spectrum splitting layer includes a micro-nano structure including a plurality of strip structures, and an arrangement direction of the plurality of strip structures is consistent with an arrangement direction of the plurality of different light filters.

Abstract: The invention provides a method for detecting KRAS mutations at one or more of codons, said method comprising the steps of: (a) extracting DNA from a biological sample; (b) assaying the DNA via PCR for KRAS mutations at one or more of codons with at least one set of oligonucleotides, wherein the at least one set of oligonucleotides comprises an allele specific forward primer, a reverse primer, a probe and a xenonucleic acid clamp to block amplification of wild type DNA. The xenonucleic acid clamps have aza-aza, thio-aza and oxy-aza chemical functionality.

Abstract: The present disclosure relates to a semiconductor structure and a method for forming the semiconductor structure. The semiconductor structure includes: a first wafer, including a first substrate and a first dielectric layer on the first substrate, a plurality of through-silicon via (TSV) structures in an array arrangement are formed in the first substrate, and the TSV structures extend through the first substrate along a direction from the first substrate to the first dielectric layer and extend into a partial thickness of the first dielectric layer; and an isolation ring structure, arranged in the first substrate around the plurality of TSV structures and extending through the first substrate along the direction from the first substrate to the first dielectric layer.

Abstract: A method for retrieving an image is provided. The method includes: extracting a global feature and a local feature of an image to be retrieved, and a global feature and a local feature of an image to be recalled by employing a preset neural network model; determining a candidate image set by matching the global feature of the image to be retrieved with the global feature of the image to be recalled and matching the local feature of the image to be retrieved with the local feature of the image to be recalled; and determining a retrieval result from the candidate image set by performing local feature verification on the image to be retrieved and a candidate image in the candidate image set. An apparatus for retrieving an image, an electronic device, and a medium are further provided.

Abstract: A composition including a compound having structural formula (I): Rf is a linear or branched perfluoroalkyl group having 1-3 atoms; n is 0-2; x is 1-3; and Rf? and Rf? are (i) independently, a linear or branched perfluoroalkyl group having 1-8 carbon atoms; or (ii) are bonded together to form a ring structure having 4-8 carbon atoms. The composition further includes a hydrocarbon contaminant.