Abstract: The present invention discloses a liquid-cooled integrative power system for electric forklift and a control method thereof. It includes an integrated transmission gearbox, an integrated motor controller, an oil pump and a vehicle controller. The integrated transmission gearbox includes a drive motor transmission mechanism and an oil pump motor transmission mechanism. The integrated motor controller includes a control unit for a drive motor and a control unit for an oil pump motor. The integrated transmission gearbox, the integrated motor controller, the drive motor, the oil pump motor, the oil pump and the vehicle controller are completely integrated and mounted to form the liquid-cooled integrative power system for electric forklift. The vehicle controller comprehensively controls the integrative power system.

Abstract: The disclosure discloses construction of recombinant Saccharomyces cerevisiae for synthesizing carminic acid and application thereof and belongs to the technical field of genetic engineering and bioengineering. The disclosure obtains recombinant S. cerevisiae CA-B2 capable of synthesizing carminic acid by heterologously expressing cyclase Zhul, aromatase ZhuJ, OKS of Octaketide synthase 1, C-glucosyltransferase UGT2, monooxygenase aptC and 4?-phosphopantetheinyl transferase npgA in S. cerevisiae. The recombinant S. cerevisiae can be used for synthesizing carminic acid by taking self-synthesized acetyl-CoA and malonyl-CoA as a precursor. On this basis, OKS, cyclase, aromatase, C-glucosyltransferase and monooxygenase relevant to carminic acid are integrated to a high copy site, which can remarkably improve the yield of carminic acid. The yield of carminic acid can be increased to 2664.6 µg/L by optimizing fermentation conditions, and the fermentation time is shortened significantly.

Abstract: Disclosed are support-activators and catalyst compositions comprising the support-activators for polymerizing olefins in which the support-activator includes clay heteroadduct, prepare from a colloidal phyllosilicate such as a colloidal smectite clay, which is chemically-modified with a heterocoagulation agent. By limiting the amount of heterocoagulation reagent relative to the colloidal smectite clay as described herein, the smectite heteroadduct support-activator is a porous and amorphous solid which can be readily isolated from the resulting slurry by a conventional filtration process, and which can activate metallocenes and related catalysts toward olefin polymerization. Related compositions and processes are disclosed.

Abstract: The present disclosure provides a method for preparing a pyrazine compound of formula (I). In the present disclosure, 3-hydroxyl-6-bromopyrazine-2-amide is subjected to a reaction in the presence of phosphorus oxychloride and DIEA, during which adding an organic inorganic chloride makes the content of impurities greatly decreased, thereby obtaining 3,6-dichloropyrazine-2-carbonitrile with high-purity. 3,6-dichloropyrazine-2-carbonitrile prepared in the present disclosure is high in purity, low in production cost and suitable for industrial scale-up production and is very helpful for follow-on production of favipiravir API.

Abstract: The disclosure discloses Bacillus subtilis for producing N-acetylneuraminic acid and application thereof, and belongs to the field of genetic engineering. The disclosure optimizes the expression levels of key enzymes in N-acetylneuraminic acid synthesis pathways on genome through promoters of different strength, reduces the protein synthesis pressure caused by the expression of enzymes on cells, and further integrates the three N-acetylneuraminic acids in a same Bacillus subtilis engineering strain. Bacillus subtilis with improved N-acetylneuraminic acid production is obtained, and the production reaches 10.4 g/L at the shake flask level, laying a foundation for further improving the NeuAc production from Bacillus subtilis.

Abstract: The present invention provides an acid-tolerant Saccharomyces cerevisiae strain and use thereof. By using exogenously added malic acid as a stress, an acid-tolerant mutant S. cerevisiae strain MTPfo-4 is obtained by directed evolution screening in the laboratory, which tolerates a minimum pH of 2.44. The mutant strain MTPfo-4, tolerant to multiple organic acids, has an increased tolerance to exogenous malic acid of up to 86.6 g/L. The mutant strain MTPfo-4 obtained is further identified. The mutant strain grows stably and well, and can tolerate a variety of organic acids (lactic acid, malic acid, succinic acid, fumaric acid, citric acid, gluconic acid, and tartaric acid). It also has a strong tolerance to inorganic acids (HCl and H3PO4). This is difficult to achieve in the existing research and reports of S. cerevisiae. The strain is intended to be used as an acid-tolerant chassis cell factory for producing various short-chain organic acids.

Abstract: A multicast data transmission method includes: determining, by a first BFIR in a first BIER domain, a BIFT-id and a bitstring that correspond to multicast data in a second BIER domain, where the BIFT-id is determined based on at least an SI to which a BFR-id of a first BFER belongs and a BSL supported by the first BFER, and the first BFER is a BFER in the second BFER domain that is used to receive the multicast data; encapsulating the multicast data into a BIER data packet, where a BIER header of the BIER data packet includes the BIFT-id and the bitstring that correspond to the multicast data in the second BIER domain; and finally sending the labeled BIER data packet to a second BFIR, where the label is a label corresponding to a prefix of the second BFIR.

Abstract: A user-guidance system that utilizes augmented-reality (AR) components and human-posture-detection techniques is presented. The user-guidance system can help users to use smart devices to conduct 3D body scans more efficiently and accurately. AR components are computer generated for the on-screen guidance to guide a camera operator to position the camera in a particular location in relation to a target object with a particular tilt orientation in relation to the target object to capture an image that includes a region of the target object for 3D reconstruction of the target object. Human-posture-detection techniques are used to detect a human user's real-time posture and provide real-time on-screen guidance feedback and instructions to the human user to adopt an intended best posture for 3D reconstruction of the human user.

Abstract: A method and system for regulating a multi-component power distribution network with high proportion of distributed power sources.

Abstract: The present invention relates to a solid Ziegler-Natta catalyst component for olefin polymerization containing an organosilicon element in combination with one or more internal electron donors. The catalyst components, according to the present invention, are able to produce polypropylene polymers with higher stereo-regularity. The present invention also provides a phthalate-free catalyst system capable of producing polypropylene with an isotacticity that is equal to or higher than catalyst systems containing phthalate derivatives.

Abstract: The present invention relates to Ziegler-Natta catalyst components for olefin polymerization employing specific carbonate compounds as an element of solid catalyst composition in conjunction with at least one or more internal donor compounds, for producing polyolefins, particularly polypropylene and ethylene-propylene block co-polymer, which exhibits substantially high rubber content with higher stereo-regularity and hydrogen response.

Abstract: A communications method and a communications apparatus and system are provided, and are applied to smart home systems. The method includes: a home device sends operation information to a server, where the operation information is used to indicate an operation performed by a user on the home device; and after receiving the operation information from the home device, the server determines a target account, where the target account is one of accounts associated with the home device, and sends a notification message to a target terminal device, where the notification message includes status information used to indicate a status of the home device, the status information is related to the operation information, and the target terminal device is a terminal device on which the target account is logged in.

Abstract: A method of manufacturing a sensor device (100) comprises providing (200) a package (102) having a first die-receiving subframe volume (104) separated from a second die-receiving subframe volume (106) by a partition wall (116). An elongate sensor element (120) is disposed (202) within the package (102) so as to bridge the first and second subframe volumes (104, 106) and to overlie the partition wall (116). The elongate sensor element (120) resides substantially in the first subframe volume (104) and partially in the second subframe volume (106). The elongate sensor element (120) is electrically connected within the second subframe volume (106).

Abstract: The present disclosure discloses a method for preparing lenalidomide. The present disclosure provides a method for preparing lenalidomide I, which comprises the following steps: in a solvent, the lenalidomide intermediate II is reduced with a metal in the presence of an organic acid to obtain the lenalidomide I, wherein the metal is one or more selected from zinc, iron, aluminum and manganese. The preparation method of the disclosure has simple and safe operation, simple post-processing steps, environmental friendliness, high total yield. Moreover, the product obtained in the method has a purity of more than 99.90%, maximum single impurity of less than 0.10%, total heavy metal residue of less than 10 ppm and meet the heavy metal residue standard and API standard. Furthermore, the method has a low production cost and is suitable for industrial production.

Abstract: The present disclosure discloses recombinant Escherichia coli and application thereof in screening erythritol-producing strains, and belongs to the technical field of microorganisms. The recombinant Escherichia coli used in a method for screening an erythritol-producing strain disclosed by the present disclosure can well perform positive correlation induction on erythritol with different concentrations, so that the method for screening the erythritol-producing strain has the advantage of high sensitivity.

Abstract: Disclosed herein are compositions for attracting fire ants wherein the compositions contain at least one fire ant food source, and at least one of 10-oxo-dodecanoic acid, 11-oxo-dodecanoic acid, or a mixture thereof, and optionally a carrier. Disclosed are also methods for attracting fire ants, the methods involving treating an object or area with a fire ant-attracting effective amount of a composition of the invention.

Abstract: A circuit for sensing a current comprises a substrate having a first and a second major surface, the second major surface being opposite to the first major surface. At least one magnetic field sensing element is arranged on the first major surface of the substrate and is suitable for sensing a magnetic field caused by a current flow in a current conductor coupled to the second major surface. The substrate also comprises at least one insulation layer, substantially buried between the first major surface and the second major surface of the substrate.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for distributing content are disclosed. In one aspect, a method includes storing, in a data structure, data specifying a future live event. An opportunity to provide the specified content to a user at a user device is identified. It is determined that (i) a time of the opportunity is between a start time and an end time for the live event, (ii) that a user device is located in a same geographic region as the live event based on geographical data provided by the user device, and (iii) the user is interested in the live event based on attributes of the user matching attributes of other users that were identified as interested in the live event (e.g., based on evaluation of online search data). The content is provided for display at the user device.

Abstract: The disclosure relates to a centrifugal compressor and a diffuser; the diffuser includes a pressure drive mechanism, a first diffuser part, a second diffuser part and a movable diffuser part movable diffuser part being connected with the pressure drive mechanism and movably arranged on one of the first diffuser part and the second diffuser part; moreover, the movable diffuser part gets close to or leaves away from the other one of the first diffuser part and the second diffuser parts under the action of a pressure medium in the pressure drive mechanism so as to adjust a width of a pressure diffusion flow channel and prevent adverse phenomena such as gas flow stall and surging.