Abstract: In one embodiment, a method includes determining a first time interval for rendering pixel values for a first portion of a display, where the first portion of the display is one of a plurality of portions of the display, accessing a representation of virtual objects in a virtual scene, and determining that the first time interval is insufficient for rendering pixel values for the first portion of the display based on the representation of virtual objects. The method further includes, for each of the portions of the display, determining a current viewpoint of a user, rendering, based on the current viewpoint of the user, pixel values for that portion of the display, and sending the rendered pixel values to be output by the display, where the rendered pixel values for the first portion of the display are rendered based on a simplified representation of virtual objects in the virtual scene.

Abstract: In one embodiment, a method includes, generating rays for casting into an artificial reality scene that includes one or more surfaces to determine whether the one or more surfaces are visible from a viewpoint. An origin and a trajectory of each ray are based on the viewpoint. The method includes applying a geometric transformation to the rays to modify their respective trajectory into the artificial reality scene. The geometric transformation is based on one or more distortion characteristics of a display system. The method includes determining, based on the modified trajectories of the rays, points of intersection of rays with the one or more surfaces in the artificial reality scene. The method includes providing, for display by the display system, color values generated based on the determined points of intersection.

Abstract: Disclosed herein are monoclonal antibodies that specifically bind to human mature Factor D and that do not bind to human Pro-Factor D, monoclonal antibodies that specifically bind to human Pro-Factor D and do not bind to human mature Factor D, and monoclonal antibodies that bind to both human mature Factor D and human Pro-Factor D. Also disclosed are methods of using the monoclonal antibodies, and compositions comprising the same, for detection of the mature and/or the pro-form of Factor D in biological samples, to determine the status of the Alternative Pathway of Complement (APC) in a mammalian subject, or to determine the status of Factor D after treatment with a MASP-3 inhibitory agent which inhibits the conversion of Pro-Factor D to mature Factor D.

Abstract: The present invention relates generally to catalysts and, in particular, relates to in-situ replacement of catalyst within a reactor. In an embodiment, the present invention comprises a method for the in-situ replacement of catalyst bodies in a catalytic reactor comprising removing catalyst bodies in-situ from at least one modularized section of a catalytic layer within a catalytic reactor and replacing the removed catalyst bodies in-situ with replacement bodies comprising catalytic function wherein at least 10% of the total catalyst bodies within the layer are replaced.