Abstract: This application discloses an optical module. A circuit board is provided with a first heat dissipation member. One end of the first heat dissipation member is attached with an optical chip, with a lens assembly covering the optical chip. The other end extends outwardly from a coverage region of the lens assembly, so that heat generated by the optical chip is diffused to outside of the lens assembly. One end of the first heat dissipation member away from the lens assembly is provided with a second heat dissipation member whose upper surface being provided with a thermally conductive member. An upper surface of the thermally conductive member is thermally coupled with an upper enclosure. The second heat dissipation member conducts the heat diffused by the first heat dissipation member to the upper enclosure via the thermally conductive member. Thus, heat dissipation is achieved via the upper enclosure.

Abstract: A size of an optical aperture for an imaging system is adjustable. The size of the optical aperture can be adjusted based on refractive index matching, optical absorption, or near field coupling techniques. These techniques may also be used to provide a high speed optical shutter.

Abstract: Nanohybrid composites, methods of making nanohybrid composites, and uses of nanohybrid composites. A nanohybrid composite may be a binary nanohybrid composite comprising MXene and dual-phase MoS2. A nanohybrid composite may be a ternary nanohybrid composite comprising MXene, dual-phase MoS2, and a plurality of carbon nanotubes. A nanohybrid composite may be made by a method comprising contacting a liquid or liquid(s), a MXene or MXenes, a sulfur precursor or sulfur precursors, a molybdenum precursor or molybdenum precursors, optionally, an ammonium precursor or ammonium precursors, and, optionally, carbon nanotubes to form a reaction mixture; heating the reaction mixture, where the nanohybrid composite is formed. Anodes may comprise one or more nanohybrid composite(s). Devices, such as, for example, batteries or the like, may comprise one or more anode(s) comprising one or more nanohybrid composite(s) and/or one or more nanohybrid composite(s).

Abstract: A water jet strengthening and polishing integrated system for blades of a blisk includes a vibration polishing unit and a water jet strengthening unit. The vibration polishing unit includes a vibration polishing bath, the vibration polishing bath is internally provided with a clamp for clamping the blisk, and vibration motors for driving the vibration polishing bath to vibrate are installed on the vibration polishing bath. Top ends of support springs are fixedly connected with the vibration polishing bath, and bottom ends of the support springs are fixedly connected with a workbench. The water jet strengthening unit includes a water jet strengthening device for carrying out water jet strengthening on the blades of the blisk and a driving mechanism for clamping the water jet strengthening device and capable of driving the water jet strengthening device to move in any direction in space.

Abstract: The present invention provides a liquid crystal composition and a liquid crystal display device thereof. The liquid crystal composition comprises at least one compound of general formula I and at least one compound of general formula II. The liquid crystal composition has a larger vertical dielectric constant (??), a larger ratio of the vertical dielectric constant to the absolute value of dielectric anisotropy (??/|??|), a larger Kave value and a higher transmittance while maintaining an appropriate clearing point, an appropriate optical anisotropy, and an appropriate absolute value of the dielectric anisotropy, such that the liquid crystal display device comprising the same has a better contrast, a faster response speed and a better transmittance while maintaining an appropriate range of operating temperature and an appropriate threshold voltage.

Abstract: A genetically engineered bacterium and a preparation method and use thereof are disclosed. The genetically engineered bacteria contain a gene encoding ?-1,2-fucosyltransferase, and a gene encoding a protein tag is connected to the gene encoding ?-1,2-fucosyltransferase; the protein tag is MBP, SUMO1, SUMO2 or TrxA, the amino acid sequence of the MBP is shown in SEQ ID NO: 2, the amino acid sequence of the SUMO1 is shown in SEQ ID NO: 3, the amino acid sequence of the SUMO2 is shown in SEQ ID NO: 4, the amino acid sequence of the TrxA is shown in SEQ ID NO: 5. Fermentation with the genetically engineered bacteria can greatly increase the yield of 2?-fucosyllactose compared to the genetically engineered bacteria that only expresses ?-1,2-fucosyltransferase exogenously, and the yield can be more than doubled in a preferred case.

Abstract: Techniques for dynamic prompt vector generation for improved language model predictions are provided. A textual prompt word and textual context data are received, and an interim vector is generated by encoding the textual prompt word and the textual context data using an encoder machine learning model. An augmented prompt vector is generated by processing the interim vector using a sequence generation machine learning model, the sequence generation machine learning model trained based on at least one sequence of vectors comprising a training prompt word, a training related word, and a plurality of intermediate vectors. Model output is generated by processing the augmented prompt vector using a language machine learning model.

Abstract: A water jet strengthening and polishing integrated system for blades of a blisk includes a vibration polishing unit and a water jet strengthening unit. The vibration polishing unit includes a vibration polishing bath, the vibration polishing bath is internally provided with a clamp for clamping the blisk, and vibration motors for driving the vibration polishing bath to vibrate are installed on the vibration polishing bath. Top ends of support springs are fixedly connected with the vibration polishing bath, and bottom ends of the support springs are fixedly connected with a workbench. The water jet strengthening unit includes a water jet strengthening device for carrying out water jet strengthening on the blades of the blisk and a driving mechanism for clamping the water jet strengthening device and capable of driving the water jet strengthening device to move in any direction in space.

Abstract: The invention discloses a genetically engineered bacterium and a method for preparing a fucosylated oligosaccharide using the same. The method includes: transferring a fucosyl group of a donor to an oligosaccharide receptor by a fucosyltransferase heterologously expressed in a genetically engineered bacterium; wherein the donor is a nucleotide-activated donor, the fucosyltransferase has ?-1,2-fucosyltransferase activity; wherein, the fucosyltransferase is selected from one or more of the enzymes corresponding to NCBI Accession Numbers WP_109047124.1, RTL12957.1, MBP7103497.1, WP_120175093.1, RYE22506.1, WP_140393075.1 and HJB91111.1. The preparation method of the invention has high yield, greatly improved substrate conversion rate and product conversion rate, and has the potential to be applied to industrial production.

Abstract: The present invention discloses a genetically engineered bacteria, which is E. coli integrated with lysogenic ?DE3, and lacZ gene is completely inactivated, but does not affect exogenous protein expression of the genetically engineered bacteria. The present invention also discloses a method for culturing the genetically engineered bacteria, and a method for preparing human milk oligosaccharides using the same, and use of the genetically engineered bacteria. The genetically engineered bacteria of the present invention can efficiently produce human milk oligosaccharides, such as 2?-fucosyllactose, and have wide industrial application prospects.

Abstract: This application discloses a sensing signal transmission processing method and apparatus, and a related device. The sensing signal transmission processing method in the embodiments of this application includes: receiving, by a first device, first signaling from a second device, where the first signaling is used to indicate a target sensing signal; and performing, by the first device, sensing measurement on the target sensing signal or sending, by the first device, the target sensing signal, where the target sensing signal includes N types of sensing signals, N is a positive integer, and in a case that N is 1, the target sensing signal includes at least two resources.

Abstract: The invention discloses a genetically engineered bacterium and its application in the preparation of sialyllactose. The genetically engineered bacterium has an N-acetylneuraminic acid biosynthesis pathway, includes multiple copies of a gene neuB for encoding sialic acid synthase, and the gene neuB is initiated for expression by a strong promoter. Using the genetically engineered bacteria of the invention to produce sialyllactose has the advantages of high yield and low overall cost.

Abstract: The disclosure provides a ventilation apparatus. The ventilation apparatus includes a housing, an inhalation branch, a control unit, a gas source port, an exhalation branch, and a paramagnetic oxygen sensor. The paramagnetic oxygen sensor is used for detecting the oxygen content in the inhalation branch. The gas source port is disposed on the housing. The inhalation branch, the control unit, and the exhalation branch are enclosed within the housing. The paramagnetic oxygen sensor is disposed outside the housing.

Abstract: This application provides a method and an apparatus, for accelerating cold startup of an application. The method includes after identifying an event that instructs an operating system of a terminal to cold start up an application, obtaining, from a plurality of dimensions, current status information related to the cold startup of the application, where the current status information includes a hardware configuration of the terminal, current load of the operating system of the terminal, resource overheads for cold starting up the application, and duration corresponding to each of a plurality of tasks in a process of cold starting up the application. The method also includes determining, by analyzing the current status information, a plurality of objects that need to be optimized in the current process of cold starting up the application; and then obtaining, based on the determined objects.

Abstract: Provided is a method for shale gas production prediction, including: acquiring real shale gas production data, and determining a target production decline curve model according to the real shale gas production data; setting a time step for production prediction, and obtaining a linear production decline curve by performing production prediction by using the target production decline curve model based on the time step; determining target shale gas production residuals according to the linear production decline curve and the real shale gas production data, inputting the target shale gas production residuals to a long short-term memory, and obtaining a residual prediction result by performing production prediction according to the long short-term memory and the time step; and determining a target production prediction result of shale gas well to be subjected to production prediction based on the linear production decline curve and the residual prediction result.

Abstract: A subsonic compressor, a rotor blade and a method for flow stability enhancement are provided. The subsonic compressor includes a hub and a casing, a tip clearance is formed between a tip of the rotor blade and an inner wall of the casing. The tip clearance is formed as a circumferential diverging leakage passage expanding from a pressure surface side of the rotor blade of the subsonic compressor at the tip to a suction surface side of the rotor blade at the tip.

Abstract: The present invention relates to the field of genetic engineering, particularly to a recombinant expression vector for rapidly screening the high expression strains and a method for rapidly screening high expression strains. In the invention, an exogenous red fluorescent protein and Aspergillus fumigatus cell surface protein localization signal are fused and expressed, and the fusion gene (DsRed-AfMP1) is integrated into the genome of Trichoderma reesei, so as to construct a strain displaying red fuorescent protein on the surface of Trichoderma reesei. By sorting Trichoderma reesei strains with red fluorescent protein on the surface by flow cytometry, genes beneficial to the improvement of cellulase activity can be quickly isolated.

Abstract: A vaneless contra-rotating compressor with multiple contra-rotating interfaces and application of the vaneless contra-rotating compressor is provided, which includes at least two vaneless contra-rotating interfaces. For each of the at least two contra-rotating interfaces, the contra-rotating interface corresponds to two of vaneless contra-rotating rotors. A rotating direction of an upstream rotor of the two vaneless contra-rotating rotors and a rotating direction of a downstream rotor of the two vaneless contra-rotating rotors are opposite. Rectifier stator vanes are not provided among all the rotors to supply sufficient inlet negative pre-swirl for the downstream rotors through the upstream rotors. Only the outlet guide vanes of the last stage, of the vaneless contra-rotating rotors are provided. The number of stages and the number of vaneless contra-rotating interfaces may be set flexibly according to the actual pressurization requirements.

Abstract: Field effect transistors (FET) including quantum layers. A FET may include a substrate, and an oxide layer disposed over the substrate. The oxide layer may include a first section and a second section positioned adjacent the first section. The FET may also include a first quantum layer disposed over the first section of the oxide layer, and a second quantum layer disposed over the second section of the oxide layer, and a first segment of the first quantum layer. Additionally, the FET may include a drain region disposed directly over a second segment the first quantum layer. The second segment of the first quantum layer may be positioned adjacent the first segment of the first quantum layer. The FET may further include a source region disposed over the second quantum layer, and a channel region formed over the second quantum layer, between the drain region and the source region.

Abstract: Disclosed are a self-locking folding bracket and a folding chair. The self-locking folding bracket includes two symmetrical foldable side supporting structures and a linkage assembly connected between the two side supporting structures, the linkage assembly includes two groups of side rods, two groups of cross rods and two groups of connecting rods, the cross rod and the connecting rod have an extreme position in the rotation process, the linkage assembly has a working state that passes down the extreme position so that the cross rod is abutted to the side rod, a folding state that the cross rod passes up the extreme position to leave the side rod, when the linkage assembly is in the working state, the linkage assembly is unfolded and able to maintain a distance between the two side supporting structures.