Abstract: The present disclosure relates to the technical field of oxygen carrier, discloses a medium-entropy perovskite oxygen carrier and its preparation method and application thereof, the synthesis procedure includes preparing an aqueous solution from metallic nitrate serving as a raw material, performing a coprecipitation reaction with at least one of aqueous ammonia solution, a sodium hydroxide aqueous solution or a sodium carbonate aqueous solution as a precipitant at a pH value of 9.5 to 10.5; obtaining the La3CoMnAlO9 powers after stirring, standing, washing, drying and calcining. The preparation method is simple, synthetic conditions are easy to control, and batch production could be achieved.

Abstract: Provided are a continuous post-treatment method and device for a penem compound. The method includes the following steps: S1, performing continuous extraction on a reaction crude product of a penem compound, to obtain an extraction heavy phase and an extraction light phase; S2, performing continuous solid-liquid separation on the extraction heavy phase, to obtain a liquid phase separation product; S3, performing continuous pH adjustment on the liquid phase separation product until a pH value thereof is 6.1-6.3, to obtain pH-adjusted solution; and S4, performing continuous crystallization treatment on the pH-adjusted solution by a first crystallization solvent, to obtain a penem compound product. The use of the method for the post-treatment of the reaction crude product of the penem compound has the advantages of high treatment speed and high efficiency, and stable material properties and a low deterioration rate during the treatment, and has better control over the yield and purity of a target product.

Abstract: The invention provides a glutamate decarboxylase mutant with improved pH tolerance and use thereof in synthesis of gamma-aminobutyric acid. The mutant is obtained by mutating glutamate decarboxylase having an amino acid sequence as shown in SEQ ID NO. 3. The enzyme activity of the mutant at pH 6.5 is improved to 178% of the original enzyme (SEQ ID NO. 3). The final yield of 1000 g of substrate fed in batches in a 5L tank for 12 h is up to 688.13 g/L, which is about 52% higher than the productivity of the original glutamate decarboxylase. The final molar conversion rate can reach 98.2%. The invention not only broadens the enzyme activity of GAD under the optimum pH, but also broadens the enzyme activity of GAD under the neutral pH, and enhances the capability of the GAD to synthesize gamma-aminobutyric acid, and therefore is more suitable for industrial production.

Abstract: A system and related method identify a weakness of a workflow in a complex system. The method collects runtime data about the complex system. The complex system comprises a plurality of subcomponents, and the method identifies an abnormal operation in the complex system. The method constructs a multi-dimensional cause-and-effect relation matrix among the plurality of subcomponents, and filters one or more related operations using the multi-dimensional cause-and-effect relation matrix.

Abstract: Aspects of the invention include systems and methods configured to prevent masquerading service attacks. A non-limiting example computer-implemented method includes sending, from a first server in a cloud environment, a communication request comprising an application programming interface (API) key and a first server identifier to an identity and access management (IAM) server of the cloud environment. The API key can be uniquely assigned by the IAM server to a first component of the first server. The first server receives a credential that includes a token for the first component and sends the credential to a second server. The second server sends the credential, a second server identifier, and an identifier for a second component of the second server to the IAM server. The second server receives an acknowledgment from the IAM server and sends the acknowledgment to the first server.

Abstract: A modified cutinase is disclosed. The cutinase has the modified amino acid sequence of SEQ ID NO: 2, wherein the modification is a substitution of asparagine at position 181 with alanine, or substitutions of asparagine at position 181 with alanine and phenylalanine at position 235 with leucine. The modified enzyme has improved PET-hydrolytic activity, and thus, the high-activity PET hydrolase is obtained, and the industrial application value of the PET hydrolase is enhanced.

Abstract: The present invention discloses a fabrication method and use of a ?40 mm large-size and high-contrast fiber optic image inverter, belonging to the field of manufacturing of fiber optic imaging elements. The light-absorbing glass for preparing the ?40 mm large-size and high-contrast fiber optic image inverter consists of the following components in molar percentage: SiO2 60-69.9, Al2O3 1.0-10.0, B2O3 10.1-15.0, Na2O 1.0-8.0, K2O 3.0-10.0, MgO 0.1-1.0, CaO 0.5-5.0, ZnO 0-0.1, TiO2 0-0.1, ZrO2 0.1-1.0, Fe2O3 3.0-6.5, Co2O3 0.1-0.5, V2O5 0.51-1.5 and MoO3 0.1-1.0. The fiber optic image inverter has the advantages of low crosstalk of stray light, high resolution and high contrast.

Abstract: A display panel and a display apparatus are provided in the present disclosure. The display panel includes a display region, a first non-display region and a second non-display region. The display region includes a plurality of first signal lines extending along the first direction; at least a part of the plurality of first signal lines includes at least one first line segment and at least one second line segment; the at least one first line segment is between two adjacent non-display regions; at least a part of the at least one second line segment is on a side of the first non-display region away from the second non-display region along the first direction; and/or, at least a part of the at least one second line segment is on a side of the second non-display region away from the first non-display region along the first direction.

Abstract: The present invention relates to a lamp for a vehicle and a vehicle. The lamp includes a housing and a light source arranged in the housing, an opening of the housing being divisible into one or more light emitting regions to correspondingly realize a predetermined light function, wherein the at least one light emitting region is provided with a light distribution element for the light source, the light distribution element having a first light distribution portion and a second light distribution portion, the first light distribution portion being configured to cause light of the light source to leave the light emitting region within a first angular range, and the second light distribution portion being configured to cause light of the light source to leave the light emitting region within a second angular range that is different from the first angular range.

Abstract: The present disclosure discloses a strain of Acidomyces acidothermus and its application in leaching copper-containing pollutants from waste circuit boards, belonging to the technical field of bio-leaching. According to the present disclosure, a strain of A. acidothermus is separated from the sludge of a Changzhou sewage treatment plant; and the strain can normally grow under an acidic condition, and copper contained in a system can be leached out in a form of copper ions by adding the strain into waste or pollutants containing heavy metal copper, so that the metal copper in the waste or pollutants is effectively treated. The treatment process is simple, the requirements for the environment and the technology are low, and the treated waste liquid does not contain high-concentration chemical reagents, which facilitates subsequent waste liquid treatment; and therefore, the A. acidothermus is suitable for industrial application.

Abstract: A device assembling system includes a management apparatus, a material apparatus, and an execution apparatus. The management apparatus is communicatively connected to the material apparatus and the execution apparatus, and the material apparatus and the execution apparatus are installed into an overall structure. The management apparatus is configured to obtain a maintenance task of a maintenance device. The maintenance task includes an operation type and an operation object. The management apparatus parses the maintenance task into a first control instruction and a second control instruction. The material apparatus receives the first control instruction, and searches for a to-be-assembled part according to the first control instruction, that is, the material apparatus may determine a position of the to-be-assembled part.

Abstract: The present disclosure provides a recombinant nucleic acid of Escherichia coli, a recombinant E. coli, a culturing method thereof, and a method for biosynthesizing L-threonine thereby, and relates to the technical field of bioengineering. The recombinant nucleic acid of E. coli of the present disclosure, including the gene encoding phosphoenolpyruvate carboxykinase (pck), the gene encoding pyruvate carboxylase (pyc) and the gene encoding threonine operon, is transformed into E. coli to obtain a recombinant E. coli LMT4 strain that takes glucose as a substrate. Using the LMT4 for fermentative production may significantly improve the L-threonine yield and glucose conversion rate, laying a foundation for the industrial production of L-threonine.

Abstract: The present disclosure provides a Bacillus subtilis strain, a recombinant B. subtilis strain and use thereof, belongs to the technical field of microbial fermentation. B. subtilis strain RF1-6 provided by the present disclosure is a mutant strain with the highest riboflavin yield screened by gene modification and mutagenesis using a high riboflavin-producing strain RF1 as a starting strain, deposited at China Center for Type Culture Collection (CCTCC) under accession number M 2022565. Riboflavin yield can be increased by 22.8% compared with that of the high riboflavin-producing strain RF1.

Abstract: The present invention discloses a glass with high refractive index for fiber optic imaging elements with medium-expansion and fabrication method therefor, the glass comprising the following components in percentage by weight: SiO2 5-9%, Al2O3 0-1%, B2O3 23-28%, CaO 0-3%, BaO 6-12%, La2O3 30-34%, Nb2O5 4-8%, Ta2O5 0-1%, Y2O3 0-1%, ZnO 4-9%, TiO2 4-8%, ZrO2 4-6%, SnO2 0-1%. The present invention further provides a fabrication method for the glass with a high refractive index, comprising: putting raw materials quartz sand, aluminum hydroxide, boric acid or boric anhydride, calcium carbonate, barium carbonate or barium nitrate, lanthanum oxide, niobium oxide, tantalum oxide, yttrium oxide, zinc oxide, titanium dioxide, zirconium oxide and stannic oxide, etc. into a platinum crucible according to the requirement of dosing, melting at a high temperature, cooling and fining, leaking and casting to form a glass rod, and then annealing, cooling and chilling the molded glass rod.

Abstract: A pharmaceutical composition containing cariprazine, a preparation method and an application thereof are provided. The pharmaceutical composition contains cariprazine pamoate solid particles. A particle size of the cariprazine solid particles has a Dv(10) less than or equal to 30 microns, a Dv(50) less than or equal to 50 microns, and a Dv(90) less than or equal to 100 microns. When being used, the pharmaceutical composition containing cariprazine is an aqueous suspension and, the concentration of the free base of cariprazine is moderate. A long-term effect can be achieved upon injection of a certain administration volume of the pharmaceutical composition, thereby reducing the frequency of medication while increasing patient medication compliance. Furthermore, the pharmaceutical composition has a high bioavailability and has promising marketing prospects.

Abstract: A connector includes a first pin which is configured to indicate an in-service signal, a second pin which is configured to indicate a power supply signal, a third pin which is configured to indicate a clock signal, and a fourth pin; the first pin which is configured to indicate a PCIe port signal; the first pin, the second pin, the third pin, and the fourth pin have an equal length; and the connector includes a first face and a second face, a limiting structure is arranged on the first face, the limiting structure is a boss or a groove, and the first pin is located in the middle of the first face.

Abstract: A pharmaceutically acceptable salt of cariprazine, a preparation method therefor, a pharmaceutical composition containing same, and the use thereof are provided. The pharmaceutically acceptable salt of cariprazine is a salt formed from the free base of cariprazine and an organic acid having six or more carbon atoms, and has relatively good solubility and stability.

Abstract: A fiber optic imaging element includes medium-expansion and a fabrication method including: (1) matching a core glass rod with a cladding glass tube to perform mono fiber drawing; (2) arranging the mono fibers into a mono fiber bundle rod, and then drawing the mono fiber bundle rod into a multi fiber; (3) arranging the multi fiber into a multi fiber bundle rod, and then drawing the multi fiber bundle rod into a multi-multi fiber; (4) cutting the multi-multi fiber, and then arranging the multi-multi fiber into a fiber assembly buddle, then putting the fiber assembly buddle into a mold of heat press fusion process, and performing the heat press fusion process to prepare a block of the fiber optic imaging element with medium-expansion; and (5) edged rounding, cutting and slicing, face grinding and polishing the prepared medium-expansion block into a billet.

Abstract: An antenna mounting system that includes abase member, a plurality of spaced retaining attachment section and retaining members is provided. The base member has a central passage that is configured to receive an antenna shaft. The plurality of spaced retaining attachment sections are coupled to the base member. A retaining member is coupled to each retaining attachment section. Each retaining member has an engagement portion that is configured to engage an upper surface of a ceiling and a biasing portion that is configured to provide a bias force on the engagement portion to engage the upper surface of the ceiling.

Abstract: A method includes detecting a traffic disturbance in a first lane of a road with a plurality of lanes. The traffic disturbance is categorized into a category. Movement characteristics of a plurality of vehicles in the proximity of the traffic disturbance are sensed. A traffic alleviation strategy is developed based on the category of the traffic disturbance and the movement characteristics. At least one traffic command is sent to a processor of at least one vehicle based on the traffic alleviation strategy.