Abstract: The present disclosure provides a method for preparing Fmoc-Lys(Ivdde)-OH, comprising steps of: reacting dimedone with isovaleric acid in the presence of a condensing agent to obtain an intermediate compound; then reacting the intermediate compound with N-alpha-tert-butoxycarbonyl-L-Lysine in the presence of an organic base to obtain an intermediate; then reacting the intermediate with an acid to obtain another intermediate; and finally reacting the another intermediate with N-(9-fluorenylmethoxycarbonyloxy)succinimide in the presence of an inorganic base to obtain Fmoc-Lys(Ivdde)-OH. The method simplifies the process, features simple operations and mild reaction conditions, and reduces the difficulty of industrial production. Furthermore, the method does not involve expensive raw materials, which is beneficial for controlling production costs, and a product is obtained with a high purity and a high yield.

Abstract: The present disclosure discloses a 3D printing system and method. The system includes a 3D printer, a controller, and a gas separation apparatus. The controller connects with the 3D printer, and is configured to control the 3D printer to perform 3D printing. The controller also connects with the gas separation apparatus, and is configured to generate a control instruction according to a preset control policy and send same to the gas separation apparatus. The gas separation apparatus is configured to, based on the received control instruction, separate a target gas from air received from the outside of the gas separation apparatus, so as to transport same to the 3D printer.

Abstract: A production system and method of dental instrument. After constructing a digital three-dimensional (3D) model of patient's teeth, pre-processing operations, comprising identifying gum lines on the digital 3D model and adding identifier information to the digital 3D model, are performed on the digital 3D model, and 3D printing is performed on the basis of the identifier information of the digital 3D model to obtain a first dental mold; and a film press processing is performed according to the first dental mold to obtain a second dental mold, identifier identification is performed on the second dental mold, and the identifier information is marked on the second dental mold according to the identification result to obtain a dental appliance. The production system and method are applied to the technical field of dental appliance production.

Abstract: Provided is a resin cleaning device and method. The resin cleaning device includes a control system, a treatment unit, a driving unit, and a feedback assembly. The treatment unit, the driving unit, and the feedback assembly are respectively in communication connection with the control system. The treatment unit is configured for treating a member-to-be-cleaned so as to reduce a viscosity of resin on the member-to-be-cleaned. The driving unit is configured for driving the member-to-be-cleaned to rotate. The feedback assembly is configured for acquiring a position signal of the member-to-be-cleaned and feeding the position signal back to the control system, such that the control system controls the treatment unit and the driving unit according to the position signal.

Abstract: A method and apparatus for 3D printing, a 3D printer and a computer device are provided. According to the method, a slice image set of a three-dimensional model to be printed is acquired; cross section information of each slice image in the slice image set is determined, and a printing difficulty value of each slice image in the slice image set based on the cross section information is calculated. Printing parameters of each slice image based on the printing difficulty value are determined. A printing operation based on the printing parameters is determined, to print the three-dimensional model based on the printing operation. In the printing process, the printing parameters may be adaptively adjusted along with the changes in the printing difficulty values of the slice images.

Abstract: The present disclosure relates to the technical field of light source control, and provides a three-dimensional printing device and a light source controlling method and mechanism thereof. The three-dimensional printing device comprises a selective light-transmitting display, a light source comprises a plurality of LED lamp sets, and the method for controlling the light source comprises: supplying currents to the plurality of LED lamp sets; obtaining a plurality of first illumination data of light emitted by the LED lamp sets and passing through the selective light-transmitting display; and adjusting a driving current of a corresponding LED lamp set according to a relationship between the plurality of pieces of first illumination data, to make the first illumination data of the plurality of LED lamp sets consistent.

Abstract: A three-dimensional printing apparatus and a three-dimensional printing method. The three-dimensional printing apparatus includes a material carrying mechanism, a supplying mechanism, a driving mechanism, an optical mechanism and a forming platform mechanism, wherein the material carrying mechanism is provided with a carrying area configured to carry a printing material; the supplying mechanism includes a supplying assembly configured to quantitatively supply a plurality of types of printing materials; and the driving mechanism is configured to realize a relative movement between the carrying area and the supplying assembly, so that the supplying mechanism quantitatively supplies a preset type of printing material at a preset position of the material carrying mechanism.

Abstract: Disclosed are a material supply mechanism, a tray assembly, a 3D printer and a 3D printing method. The material supply mechanism is configured to add a printing material to a tray of the 3D printer, and includes: a conveying assembly including a storage body and a conveying member, the storage body is internally provided with a storage cavity, the storage cavity is configured to store the printing material, and the conveying member is arranged in the storage cavity; a transmission assembly connected to the conveying member in a transmission manner and configured to drive the conveying member to move in the storage cavity when driven; and an output assembly connected to the storage body and configured to guide the printing material out into the tray. The disclosure improves in the related art that it is inconvenient to add a printing material for a 3D printer.

Abstract: Techniques are described for providing touchless ATM transactions based on receipt of a pre-staged transaction initiated by an authenticated user via an online banking system of a bank and subsequent receipt of a cryptogram of the user's payment card at an ATM. A server device receives transaction data for the pre-staged transaction from a user computing device via a user interface of an application associated with the online banking system. The server device associates the pre-staged transaction with a bank account including one or more payment cards of the user. The server device later receives a cryptogram of a payment card from an ATM and, based on identification information included in the cryptogram, determines that the payment card at the ATM is one of the payment cards of the bank account associated with the pre-staged transaction. In response, the server device authorizes performance of the pre-staged transaction at the ATM.

Abstract: A combat control method for a game object, a computer readable storage medium, and an intelligent terminal are provided. The combat control method includes: configuring a game object, where the game object includes first game units and second game units; configuring an arrangement area for the game object, where the arrangement area has n accommodation units for accommodating each game object in a horizontal direction, and m accommodation units for accommodating each game object in a vertical direction; obtaining a first arrangement column by separating along the vertical direction in the arrangement area, and placing the first game units in the first arrangement column; and obtaining second arrangement columns by separating along the vertical direction in the arrangement area that do not overlap the first arrangement column, and placing the second game units in second arrangement columns to form a combat lineup.

Abstract: A combat control method for a game object, a computer readable storage medium, and an intelligent terminal are provided. The combat control method includes: controlling game objects comprising a game object in a first combat lineup and a game object in a second combat lineup to enter a combat state; controlling a first game object in the first combat lineup to point to a second game object in the second combat lineup, and controlling a third game object in the first combat lineup to point to a fourth game object in the second combat lineup, until each game object in the first combat lineup or in the second combat lineup is configured with a pointed game object; calculating a combat result, and pointing the game object with a winning combat result in the first combat lineup to the game object with a winning combat result in the second combat lineup.

Abstract: Disclosed are a method and system for optical calibration of a 3D printer. The method includes: projecting, by an optical apparatus, a projection image to a projection platform, placing a calibration plate on the projection platform, and capturing the projection platform; identifying the coordinates of calibration points and the coordinates of actual projection points according to the captured image to obtain a matrix of calibration points and a matrix of actual projection points; rotating and translating the matrix of the calibration points and/or the matrix of the actual projection points, and calculating a distance value T0 between the calibration points and the actual projection points in an image coordinate system; converting the T0 in the image coordinate system into an offset C1 in a pixel coordinate system, and inversely distorting an initial ideal projection image according to the offset C1 to offset optical distortion.

Abstract: The disclosure provides a resin cleaning device and method. The resin cleaning device includes a control system, a treatment unit, a driving unit, and a feedback assembly. The treatment unit, the driving unit, and the feedback assembly are respectively in communication connection with the control system. The treatment unit is configured for treating a member-to-be-cleaned so as to reduce a viscosity of resin on the member-to-be-cleaned. The driving unit is configured for driving the member-to-be-cleaned to rotate. The feedback assembly is configured for acquiring a position signal of the member-to-be-cleaned and feeding the position signal back to the control system, such that the control system controls the treatment unit and the driving unit according to the position signal. Through the above manner, a more intelligent resin cleaning process with a better cleaning effect may be realized.

Abstract: Provided are a calibration method for splicing light source modules, a projection method, a 3D printing method, a calibration apparatus, a 3D printer, and a non-volatile computer-readable storage medium. There are at least two light source modules. The calibration method includes: performing optical calibration processing on each of the light source modules, wherein a splicing overlapping area is present in projection regions of the light source modules subjected to optical calibration processing; and performing, on the basis of the splicing overlapping area, calibration accuracy inspection on each of the light source modules subjected to optical calibration processing.

Abstract: Disclosed in the disclosure are a method and apparatus for calibrating an exposure surface of an optical system, and a computer device and a storage medium. The method includes: performing flat-field correction on a photographing module; acquiring a grayscale distribution image; segmenting the grayscale distribution image into a mesh image including a plurality of segmented regions, and calculating a fitting grayscale value of each segmented region; selecting, as a reference grayscale value, a minimum fitting grayscale value from all the fitting grayscale values obtained through calculation, and calculating grayscale compensation coefficients corresponding to the other segmented regions, so as to generate a digital mask; and performing mask compensation, by using the digital mask, on a light projection image projected by the optical system, so as to obtain a printed image of which the exposure surface has a uniform irradiance value.

Abstract: The disclosure provides a resin cleaning device and method. The resin cleaning device includes a control system, a treatment unit, a driving unit, and a feedback assembly. The treatment unit, the driving unit, and the feedback assembly are respectively in communication connection with the control system. The treatment unit is configured for treating a member-to-be-cleaned so as to reduce a viscosity of resin on the member-to-be-cleaned. The driving unit is configured for driving the member-to-be-cleaned to rotate. The feedback assembly is configured for acquiring a position signal of the member-to-be-cleaned and feeding the position signal back to the control system, such that the control system controls the treatment unit and the driving unit according to the position signal. Through the above manner, a more intelligent resin cleaning process with a better cleaning effect may be realized.

Abstract: Disclosed in the disclosure are a method, system and apparatus for processing slice image for 3D printing, and a storage medium. The method includes: acquiring a slice image of a three-dimensional model, and a relationship between a grayscale compensation parameter and a size adjustment value; determining at least one size adjustment value according to the slice image; determining at least one grayscale compensation parameter according to the at least one size adjustment value and the relationship between the grayscale compensation parameter and the size adjustment value; and respectively performing grayscale processing on edge pixels of corresponding contours in the slice image according to the plurality of grayscale compensation parameters, where the processed slice image is used for 3D printing.

Abstract: Disclosed in the disclosure are a method, system and apparatus for processing slice image for 3D printing, and a storage medium. The method includes: acquiring a slice image of a three-dimensional model, and a relationship between a grayscale compensation parameter and a size adjustment value; determining at least one size adjustment value according to the slice image; determining at least one grayscale compensation parameter according to the at least one size adjustment value and the relationship between the grayscale compensation parameter and the size adjustment value; and respectively performing grayscale processing on edge pixels of corresponding contours in the slice image according to the plurality of grayscale compensation parameters, where the processed slice image is used for 3D printing.

Abstract: A production system and method of dental instrument. After constructing a digital three-dimensional (3D) model of patient's teeth, pre-processing operations, comprising identifying gum lines on the digital 3D model and adding identifier information to the digital 3D model, are performed on the digital 3D model, and 3D printing is performed on the basis of the identifier information of the digital 3D model to obtain a first dental mold; and a film press processing is performed according to the first dental mold to obtain a second dental mold, identifier identification is performed on the second dental mold, and the identifier information is marked on the second dental mold according to the identification result to obtain a dental appliance. The production system and method are applied to the technical field of dental appliance production.

Abstract: A combat control method for a game object, a computer readable storage medium, and an intelligent terminal are provided. The combat control method includes: controlling game objects comprising a game object in a first combat lineup and a game object in a second combat lineup to enter a combat state based on a combat process confirmation instruction; controlling a first game object in the first combat lineup to point to a second game object in the second combat lineup, and controlling a third game object in the first combat lineup to point to a fourth game object in the second combat lineup, until each game object in the first combat lineup or in the second combat lineup is configured with a pointed game object; calculating a combat result, and pointing the game object with a winning combat result in the first combat lineup to the game object with a winning combat result in the second combat lineup, until the game objects in either the first combat lineup or the second combat lineup are all defeated.