Abstract: The inventions provide methods for characterizing messenger RNAs (mRNA) and polyadenylation on mRNAs. The disclosed inventions are developed for characterizing mRNA and poly(A) tail length on mRNA samples. These inventions can be used in release testing of mRNA drug substrate (DS) or drug product (DP), and can provide direct read-out of mRNA integrity and poly(A) tail length. The inventions further provide methods of analyzing the condition of mRNAs in samples. Characterized mRNA samples obtained by all of the inventive methods also are part of the inventions disclosed herein.

Abstract: Video processing methods, devices, and systems are provided. In one example aspect, a method of video processing includes performing a conversion between a current block of a video and a coded representation of the video. The current block has a width W and a height H and includes an allowable scanning region that includes non-zero transform coefficients that are coded in the coded representation according to a scanning order. The allowable scanning region is restricted to a portion of the current block according to a rule that specifies that a bottom-right corner position of the allowable scanning region is different than a bottom-right corner position of the current block.

Abstract: A flexible and smart wood with responsive function, an actuator and a preparation method of the flexible and smart wood with responsive function are provided. The preparation method includes the following steps: removing lignin from wood by using sodium chlorite solution, removing hemicellulose through alkali treatment, compounding a wood chip with an azobenzene compound by using a negative pressure method, and then densifying to form a wood film. According to the preparation method, the flexible and smart wood is successfully prepared, and the actuator made from the flexible and smart wood takes stimulation (such as illumination) given by an external environment as a power source, so that the actuator has an advantage of no secondary energy consumption.

Abstract: A transparent wood surface imprinting optical device is provided. A preparation method for the device includes cleaning and drying surfaces of transparent wood, spin-coating polymethyl methacrylate (PMMA) on a substrate of the transparent wood to obtain a PMMA layer, and spin-coating an ultraviolet (UV) glue on the PMMA layer to obtain a UV glue layer; placing the transparent wood on a silicon wafer, attaching a transparent grating array imprinting template on the UV glue layer, exposing the UV glue layer, and removing the transparent grating array imprinting after the exposing, thereby to obtain a grating-structure-based transparent wood; and replacing the grating structure imprinting template by a lattice structure imprinting template to prepare lattice-structure-based transparent wood. The diffraction efficiency of the grating structure and the lattice structure on the transparent wood are greater and more stable than those of PMMA substrates.

Abstract: Aspects of the present disclosure involve a system comprising a computer-readable storage medium storing a program and method for displaying a profile from a content feed within a messaging system. The program and method provide for receiving by a messaging application, first user input corresponding to a request for a content feed, the content feed comprising a plurality of media content items; providing, in response to receiving the first user input, for display of the content feed; receiving, by the messaging application, second user input of a predefined gesture performed with respect to a first media content item of the plurality of media content items; determining, in response to receiving the second user input and based on the first media content item, to display a public profile associated with the first media content item; and providing, based on the determining, for display of the public profile.

Abstract: A method for processing a part using a forming device by laser melting, by: establishing a function, performing first-order and second-order differentiation on the function to obtain a first-order and a second-order derivative, solving the equation that the first-order derivative equals to zero, substituting the roots into the second-order derivative to obtain the roots of the first-order derivative, among which the root with a smallest absolute value is defined as a first value; performing third-order differentiation on the obtained function, solving the equation that the second-order derivative equals to zero to obtain the roots which is defined as second values; subtracting the first value from the second values, and obtaining the second value corresponding to a value that is less than zero and has a smallest absolute value among obtained results, that is a value of the defocus amount to achieve the optimal self-healing effect.

Abstract: The invention discloses a method for enhanced denitrification and a device thereof. The device comprises an anoxic tank, an aerobic tank and a carbon source booster connected in sequence, and an output end of the carbon source booster is then connected with the anoxic tank; a plurality of membrane contactors are fixed inside the carbon source booster, the membrane contactor is in a hollow structure, and there is a gap between the membrane contactors and a shell of the carbon source booster. By adopting the device, macromolecular carbon source can be added and hydrolyzed into volatile fatty acids by using the hydrolytic fermentation bacteria existing in the gap between the carbon source booster and the membrane contactors, which then penetrates into the hollow part of the membrane contactors through membrane diffusion, as a small molecular carbon source that can be effectively used by denitrifying bacteria to promote the denitrification process.

Abstract: A system with a cost estimation tool for estimating a realized bandwidth consumption of a logical edge between a logical producer unit and a logical consumer unit of an operation unit graph during placement and routing of the logical producer unit, the logical consumer unit, and the logical edge onto a reconfigurable processor is presented as well as a method of operating such a cost estimation tool and a non-transitory computer-readable storage medium including instructions that, when executed by a processing unit, cause the processing unit to operate such a cost estimation tool The cost estimation tool may be configured to determine the realized bandwidth consumption of the tentative assignment based on an upper bandwidth limit of the logical edge, an end-to-end bandwidth, a scaling factor of a realized bandwidth, and a congestion estimation of the physical link.

Abstract: A cost estimation tool in a system for implementing an operation unit graph on a reconfigurable processor is presented as well as a method of operating a cost estimation tool for estimating a cost of implementing an operation unit graph. The operation unit graph may include first and second logical units that perform first and second data operations and have first and second ports, respectively, coupled by a logical edge, on a reconfigurable processor. The method includes receiving the operation unit graph, determining first and second upper bandwidth limits of the first and second ports, respectively, determining a logical edge bandwidth of the logical edge based on the first and second upper bandwidth limits, determining a timing group for the logical edge, and providing the logical edge bandwidth and the timing group as a cost estimation of implementing the operation unit graph on the reconfigurable processor.

Abstract: A cost estimation tool in a system for implementing an operation unit graph on a reconfigurable processor is presented as well as a method of operating a cost estimation tool for determining scaled logical edge bandwidths in an operation unit graph in preparation of placing and routing the operation unit graph onto a reconfigurable processor. The cost estimation tool may be configured to receive the operation unit graph, divide the operation unit graph in first and second subgraphs, determine maximum latencies of the first and second subgraphs, and determine a scaled logical edge bandwidth of a logical edge that couples a first logical unit of M logical units in the first subgraph with a second logical unit of N logical units in the first subgraph based on M, N, and scaled bandwidth limits of the M and N logical units.

Abstract: A method for training a model, a method for controlling an object, an apparatus, a medium, and a device. The method includes acquiring an interaction sequence generated by an interaction between a first virtual object and a second virtual object in a virtual environment; acquiring a training reward weight parameter corresponding to each interaction sequence; determining a target return value corresponding to each of the sampled data, according to the training reward weight parameter corresponding to the interaction sequence and the return value in the interaction sequence; determining a target loss of the training deep reinforcement learning model, according to an action-value predicted value determined based on a state feature and a decision action of each of the sampled data and the target return value corresponding to the sampled data; and training the training deep reinforcement learning model based on the target loss.

Abstract: The present disclosure discloses an injection molding method for fabricating a transparent device, and belongs to the technical field of material processing. The method comprises: preparing a nano-microsphere structural polymer material from a long-chain polymer material; obtaining a glass transition temperature and a viscous flow transition temperature of the nano-microsphere structural polymer material; obtaining a processing temperature of the nano-microsphere structural polymer material according to the glass transition temperature and the viscous flow transition temperature; drying the nano-microsphere structural polymer material; plasticizing the dried nano-microsphere structural polymer material according to the processing temperature; filling the plasticized nano-microsphere structural polymer material; cooling the filled nano-microsphere structural polymer material; and demolding the cooled nano-microsphere structural polymer material to form a transparent device.

Abstract: A training method for a neural network includes determining first disassembly paths of a plurality of first molecules, and obtaining a first cost dictionary based on the first disassembly paths of the first molecules. The method also includes determining molecular expression information of second molecules based on the first disassembly paths of the first molecules, and determining a plurality of third molecules from the second molecules, each of the third molecules representing a class of the second molecules. The method further includes obtaining a second cost dictionary based on second disassembly paths of the third molecules, and performing training based on the first cost dictionary and the second cost dictionary to obtain a target neural network. The target neural network being configured to output cost value information corresponding to a target molecule according to input molecular expression information of the target molecule.

Abstract: A switching power device comprises a device lead-frame. Gates, Kelvin sources and a drain are formed on the device lead-frame, the gates and the Kelvin sources are arranged at one end of the device lead-frame, and the drain is arranged at the other end of the device lead-frame; and two gates and two Kelvin sources are provided. One end of the device lead-frame is sequentially provided with the gate, the Kelvin source, the Kelvin source and the gate, so as to form a symmetrical pin structure.

Abstract: Packaging methods and structures for lateral high voltage gallium nitride (GaN) devices achieve electrical isolation while also maintaining thermal dissipation. The electrical isolation reduces or eliminates vertical leakage current, improving high voltage performance. The packages may use or be compatible standards such as JEDEC, which reduces packaging cost and facilitates implementation of the packaged devices in conventional circuit design approaches.

Abstract: The present disclosure discloses an injection molding method for fabricating a transparent device, and belongs to the technical field of material processing. The method comprises: preparing a nano-microsphere structural polymer material from a long-chain polymer material; obtaining a glass transition temperature and a viscous flow transition temperature of the nano-microsphere structural polymer material; obtaining a processing temperature of the nano-microsphere structural polymer material according to the glass transition temperature and the viscous flow transition temperature; drying the nano-microsphere structural polymer material; plasticizing the dried nano-microsphere structural polymer material according to the processing temperature; filling the plasticized nano-microsphere structural polymer material; cooling the filled nano-microsphere structural polymer material; and demolding the cooled nano-microsphere structural polymer material to form a transparent device.