Abstract: The present invention relates to the field of carbon storage monitoring technology, which is a sampling device for monitoring wetland carbon storage. The sampling device includes a square frame, a supporting frame, etc. The supporting frame is securely mounted on the square frame, with a U-shaped frame fixed at its top. The U-shaped frame houses a mounting plate, and a lifting plate is also slidingly mounted on the supporting frame. The sampling outer cylinder is fixedly mounted on the lifting plate, with an inner sampling cylinder inserted inside. Additionally, the sampling device comprises a lifting drive component, a depth control component, and a sampling component. The sampling device can both improve the accuracy of sampling work at different soil depths and eliminate detection errors with high degree of automations. At the same sampling position, multiple sets of samples can be collected simultaneously to ensure the accuracy of sampling results.

Abstract: Disclosed is a preparation method for an SGLT2 inhibitor intermediate V, the method comprising: adding a compound IV to a solvent, and in the presence of a catalytic reagent, carrying out heat preservation reaction with a fluorination reagent. The preparation process for the intermediate V is simple in operations, mild in reaction conditions and high in safety, facilitates quality control and is suitable for industrial production. In addition, the intermediate V prepared by the method is high in purity, has few side reaction product monofluoro-impurity shown as structural Formula V?, is easy to purify, and is applicable to quality research on active pharmaceutical ingredients and preparations of the SGLT2 inhibitor.

Abstract: A compensation system and method for a zero-crossing voltage of back electromotive force of a brushless direct current motor (BLDCM) are provided. The compensation system includes: a direct current power supply; a three-phase inverter, connected to the direct current power supply and the BLDCM; a back electromotive force detection module configured to detect terminal voltages of three phases when the BLDCM is in operation; and a controller, connected to the three-phase inverter through the back electromotive force detection module. The compensation system further includes a current acquisition module connected between the direct current power supply and the controller, and the current acquisition module is configured to acquire a bus current value when the BLDCM is in operation; the controller includes a voltage compensation module connected to the back electromotive force detection module. A bus current threshold is preset in the voltage compensation module.

Abstract: A substrate processing system includes a process chamber, one or more robot, a substrate measurement system, and a computing device. The process chamber may process a substrate that will comprise a film and/or feature after the processing. The one or more robot, to move the substrate from the process chamber to a substrate measurement system. The substrate measurement system may measure the film and/or feature on the substrate and generate a profile map of the film and/or feature. The computing device may process data from the profile map using a first trained machine learning model, wherein the first trained machine learning model outputs a first chamber component condition estimation for a first chamber component of the process chamber. The computing device may then determine whether to perform maintenance on the first chamber component of the process chamber based at least in part on the first chamber component condition estimation.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for distributing digital components are described. One aspect features a digital component distribution system that can determine that a digital component that depicts content related to a particular subject can be distributed to a computing device. The system can use a data processing model and contextual information for the computing device to determine that it can include a remind-me-later user interface control with the digital component. In response to determining to include the remind-me-later user interface control, the system can modify the digital component to include the remind-me-later user interface control that, when interacted with by a user, causes the computing device to schedule a notification that reminds a user of the computing device of the subject of the digital component. The system can send the digital component with the remind-me-later user interface control to the computing device.

Abstract: The present disclosure belongs to the technical field of casting, and specifically relates to a high-inertia mold shell for casting, a preparation method thereof, and a method for improving precision of a magnesium alloy cast. The high-inertia mold shell for casting includes a surface layer, which is configured to contact a magnesium alloy pouring liquid, wherein the surface layer contains an inorganic compound, and the inorganic compound is at least one selected from the group consisting of boric anhydride, borax, potassium fluoride, and sodium fluoride; and in the above, based on a total amount of raw materials of the surface layer, a content of the inorganic compound accounts for 10-40 wt %.

Abstract: Provided is a method for preparing Rebaudioside J using an enzymatic method, comprising using rebaudioside A as a substrate, and making the substrate, in the presence of a glycosyl donor, react under the catalysis of a UDP-glycosyltransferase-containing recombinant cell and/or UDP-glycosyltransferase prepared therefrom to generate Rebaudioside J.

Abstract: The present disclosure provides techniques for presenting a reward impression. A computing system can receive, from a client device, a request to view the reward impression having a first time slot and a second time slot. The computing system can calculate a first conversion rate associated with a first content item being presented in the first time slot and a second conversion rate associated with a second content item being presented in the second time slot. The computing system can select, using the one or more machine-learned models based on the first conversion rate and the second conversion rate, the first content item and the second content item from a plurality of content items. The computing system can cause the presentation of the first content item in the first time slot and the second content item in the second time slot of the reward impression.

Abstract: The present disclosure describes techniques for optimizing screen utilization of a content item displayed on a client device. The method can include receiving, from a client device, a request for content including one or more parameters corresponding to a content slot. The method can include determining that a first display orientation of the content item does not match a second display orientation of the content slot. The method can include transmitting, responsive to determining that the first display orientation of the content item does not match the second display orientation of the content slot, the content item and instructions that when executed, cause the client device to adjust an aspect ratio of the content slot based on the first display orientation of the content item.

Abstract: Provided is a method for preparing Rebaudioside C using an enzymatic method, comprising using rubusoside or dulcoside A as a substrate, and making the substrate, in the presence of a glycosyl donor, react under the catalysis of UDP-glycosyltransferase-containing recombinant cell and/or UDP-glycosyltransferase prepared therefrom to generate Rebaudioside C.

Abstract: Provided is a method for preparing rebaudioside N using an enzymatic method, comprising using rebaudioside A or rebaudioside J as a substrate, and making the substrate, in the presence of a glycosyl donor, react under the catalysis of a UDP-glycosyl-transferase and/or a UDP-glycosyltransferase-containing recombinant cell to generate rebaudioside N.

Abstract: Provided is a method for preparing Rebaudioside J using an enzymatic method, comprising using rebaudioside A as a substrate, and making the substrate, in the presence of a glycosyl donor, react under the catalysis of a UDP-glycosyltransferase-containing recombinant cell and/or UDP-glycosyltransferase prepared therefrom to generate Rebaudioside J.

Abstract: Systems and methods for generating enquiries and responses based on application metadata are provided. The systems and methods can include a data processing system (“DPS”). The DPS can receive, from a client device, a request for content. The DPS can access metadata of one or more applications available for installation, the metadata of each application comprises a plurality of field-value pairs including values received from a device corresponding to a publisher of the application. The DPS can determine, from the metadata, entries associated with the applications, comprising enquiries and corresponding responses. The DPS can select a content item including a subset of the one or more entries and an actionable object, which when selected, causes the client device to access an information resource from which an application of the one or more applications can be installed. The DPS can transmit the content item for display on the client device.

Abstract: Provided is a method for preparing Rebaudioside J using an enzymatic method, comprising using rebaudioside A as a substrate, and making the substrate, in the presence of a glycosyl donor, react under the catalysis of a UDP-glycosyltransferase-containing recombinant cell and/or UDP-glycosyltransferase prepared therefrom to generate Rebaudioside J.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for presenting a first application's interface within a second application's interface. One of the methods includes receiving, by an active application executing on a user device that is not an application store, digital content referencing a second application not installed on the user device; obtaining application store data for the second application; providing, a user interface of the active application, the digital content with an application store user interface that includes (i) the application store data for the second application and (ii) an install element for triggering installation of the second application on the user device from within the active application; detecting user interaction with the install element; and in response to detecting the user interaction with the install element, triggering a download of the second application independent of launching an application for the application store.

Abstract: Provided is a method for preparing rebaudioside N using an enzymatic method, comprising using rebaudioside A or rebaudioside J as a substrate, and making the substrate, in the presence of a glycosyl donor, react under the catalysis of a UDP-glycosyl-transferase and/or a UDP-glycosyltransferase-containing recombinant cell to generate rebaudioside N.

Abstract: Provided is a method for preparing Rehaudioside C using an enzymatic method, comprising using rubusoside or dulcoside A as a substrate, and making the substrate, in the presence of a glycosyl donor, react under the catalysis of UDP-glycosyltransferase-containing recombinant cell and/or UDP-glycosyltransferase prepared therefrom to generate Rebaudioside C.

Abstract: Provided is a method for preparing Rebaudioside J using an enzymatic method, comprising using rebaudioside A as a substrate, and making the substrate, in the presence of a glycosyl donor, react under the catalysis of a UDP-glycosyltransferase-con-taining recombinant cell and/or UDP-glycosyltransferase prepared therefrom to generate Rebaudioside J.

Abstract: Provided is a method for preparing rebaudioside N using an enzymatic method, comprising using rebaudioside A or rebaudioside J as a substrate, and making the substrate, in the presence of a glycosyl donor, react under the catalysis of a UDP-glycosyl-transferase and/or a UDP-glycosyltransferase-containing recombinant cell to generate rebaudioside N.

Abstract: Provided is a method for preparing Rebaudioside C using an enzymatic method, comprising using rubusoside or dulcoside A as a substrate, and making the substrate, in the presence of a glycosyl donor, react under the catalysis of UDP-glycosyltransferase-containing recombinant cell and/or UDP-glycosyltransferase prepared therefrom to generate Rebaudioside C.