Abstract: Implementations are described herein for hierarchical interfaces for screen reader users (SRUs). In various implementations, a first subtree of leaf nodes of a hierarchical data structure may be populated with content extracted or otherwise derived from digital content item(s), which may or may not be responsive to a search query. Generative model(s) may be used to process the content of the first subtree of leaf nodes to generate a first summary of the content used to populate the first subtree of leaf nodes. A first branch node above the subtree of leaf nodes may be populated with the first summary. The generative model(s) may be used to process first summary and a second summary to generate second tier output that includes a third summary of the first and second summaries. A screen reader interface may be provided and may be operable to facilitate navigation of the hierarchical data structure.

Abstract: The invention discloses novel dicyanostilbene derivatives bound to a methacrylic moiety that can serve as an active chromophore in a 3-dimensional optical memory, processes for its synthesis and its intermediates.

Abstract: Provided are processes for preparation of Retapamulin via its pleuromutilin-thiol precursor.

Abstract: The invention discloses novel dicyanostilbene derivatives bound to a methacrylic moiety that can serve as an active chromophore in a 3-dimensional optical memory, processes for its synthesis and its intermediates.

Abstract: A polymer matrix comprising active chromophoric groups and aromatic compounds selected from phenyls substituted with one or more substituents independently selected from: (i) halogens; (ii) C1-4alkyl esters of carboxylic acid or their amides; (iii) —OR, —SR or —C(?O)R, R being an C1-6alkyl group; (iv) the group —O—(CH2)n—O—C(?O)C(X)?CH2 where X is CH3 or H and n is independently 1-6; or (v) the group —O—C(?O)C(X)?CH2. There is further provided a 3-dimensional optical data storage comprising a photochromic medium, where such a combination facilitates the writing of data in the 3-dimensional optical data storage.

Abstract: There are provided conjugated systems of formula (I) based on stilbene derivatives serving as improved Donor-Acceptor-Donor compounds and their use in non linear optics including chromophoric optical medium of a 3-dimensional optical memory.