Abstract: Provided is a lens assembly. The lens assembly includes a first optical path offset assembly (33), a second optical path offset assembly (34), a drive mechanism, an elastic seal ring (35) and a locking mechanism (37). The optical path of the first optical path offset assembly and the optical path of the second optical path offset assembly communicate with each other. The first optical path offset assembly and the second optical path offset assembly are each rotatable about the central axis of the lens assembly (3). The drive mechanism is configured to drive the first optical path offset assembly to rotate about the central axis. The elastic seal ring is configured to make the first optical path offset assembly and the second optical path offset assembly rotate together.

Abstract: Provided are a lens barrel and a laser cutting head. The lens barrel includes a barrel, a pair of window lenses, a collimating lens, a focusing lens, and a drive assembly. The barrel is provided with a channel penetrating through the barrel. The pair of window lenses are disposed at two ends of the channel in a one-to-one manner. A sealing portion configured to seal the channel is disposed between the pair of window lenses and the inner wall of the channel. The collimating lens and the focusing lens are disposed sequentially in the channel. The moving end of the drive assembly is capable of moving along the extension direction of the channel. The barrel is connected to the moving end of the drive assembly.

Abstract: Disclosed are a picture generation method performed by a computer device. The method includes: rendering a three-dimensional virtual scene to obtain a scene background rendering map; rendering a first foreground target reported by a first terminal associated with a first client to obtain a first foreground target rendering map; blending the scene background rendering map and the first foreground target rendering map to obtain a first picture, the first picture including the first foreground target displayed in the three-dimensional virtual scene; and providing the first picture to the first terminal associated with the first client for displaying the first picture. A technology of thousand people with thousand faces is achieved, the rendering efficiency can be improved, and the cost is saved.

Abstract: An image processing method includes: acquiring an image size of an image and original image data of the image; creating a first texture storage area according to the image size, and storing image data of the image into the first texture storage area; creating, according to the image size and a target encoding format, a second texture storage area for storing target image data to be generated, a color encoding format corresponding to the target image data being the target encoding format; and performing, through a shader called by a graphics processor (GPU), encoding format conversion on the original image data stored in the first texture storage area to generate the target image data corresponding to each texture coordinate in the second texture storage area, and storing the target image data corresponding into the each texture coordinate to a corresponding storage location in the second texture storage area.

Abstract: An optical marker for positioning a medical device outside a body and the medical device are disclosed. The optical marker comprises: a base having a concave or a convex, the concave or the convex being provided with a non-coplanar optical mark(s), and the optical mark(s) being visible on the entire surface of the concave or the convex; and a connecting portion connected to the base and used for connecting with the medical device. In the optical marker, the base provided with the optical mark(s) has a non-planar structure, being able to increase the recognizable angle of the medical device and improve the recognition accuracy and stability.

Abstract: A hydraulic steering system, comprising a steering pump and a plurality of digital steering cylinder assemblies Each digital steering cylinder assembly includes a steering cylinder and a digital hydraulic valve configured to selectively communicate a rodless cavity of the steering cylinder with one of the steering pump and a return oil circuit, and communicate a rod cavity of the steering cylinder with the other of the steering pump and the return oil circuit.A controller can be configured to emit a digital pulse signal to a motorand cause the digital hydraulic valve to move towards a first working position or a second working position andA mechanical feedback structure can be configured to be driven by a piston rod of the steering cylinder when the valve core of the digital hydraulic valve moves towards the first working position or the second working position, so as to drive the digital hydraulic valve to return to a neutral position.

Abstract: We provide compounds given by Formula I, which is shown in FIG. 3, or pharmaceutically acceptable salts thereof, as well as formulations thereof and methods of use of those compounds and formulations for treatment of cancer.

Abstract: We provide compounds given by Formula I, which is shown in FIG. 3, or pharmaceutically acceptable salts thereof, as well as formulations thereof and methods of use of those compounds and formulations for treatment of cancer.

Abstract: We provide compounds given by Formula I, which is shown in FIG. 3, or pharmaceutically acceptable salts thereof, as well as formulations thereof and methods of use of those compounds and formulations for treatment of cancer.

Abstract: We provide compounds given by Formula I, which is shown in FIG. 3, or pharmaceutically acceptable salts thereof, as well as formulations thereof and methods of use of those compounds and formulations for treatment of cancer.

Abstract: We provide compounds given by Formula I, which is shown in FIG. 3, or pharmaceutically acceptable salts thereof, as well as formulations thereof and methods of use of those compounds and formulations for treatment of cancer.

Abstract: We provide compounds given by Formula I, which is shown in FIG. 3, or pharmaceutically acceptable salts thereof, as well as formulations thereof and methods of use of those compounds and formulations for treatment of cancer.

Abstract: Intermediates and methods of their use in the synthesis of analogs of halichondrin B are provided.

Abstract: The present invention provides compounds having formula (I) (and pharmaceutically acceptable derivatives thereof): and additionally provides methods for the synthesis thereof and methods for the use thereof in the treatment of cancer, wherein R1-R14 and n are as defined herein.

Abstract: Intermediates and methods of their use in the synthesis of analogs of halichondrin B are provided.