Abstract: A precursor comprises a tungsten precursor and a carbon-containing material. The precursor comprises less than 0.02% by weight of the carbon-containing material based on a total weight of the precursor. A method for purifying a tungsten precursor may comprise at least one of the following steps: obtaining a source vessel containing a tungsten precursor and a carbon-containing material; separating the tungsten precursor from at least a first portion of the carbon-containing material; recovering a precursor in a collection vessel; or any combination thereof.

Abstract: Methods are provided for identifying media files that are related to a user-selected media file. Initially, a first set of media files that have previously been determined to be related to the selected media file is identified. It is determined that the number of media files in the first set of media files does not exceed a minimum number. A query is constructed based on the title or description of the selected media file to locate more related media files. A media database is searched and the results are combined with the first set of media files to be displayed.

Abstract: Methods are provided for identifying media files that are related to a user-selected media file. Initially, a first set of media files that have previously been determined to be related to the selected media file is identified. It is determined that the number of media files in the first set of media files does not exceed a minimum number. A query is constructed based on the title or description of the selected media file to locate more related media files. A media database is searched and the results are combined with the first set of media files to be displayed.

Abstract: Methods are provided for identifying media files that are related to a user-selected media file. Initially, a first set of media files that have previously been determined to be related to the selected media file is identified. It is determined that the number of media files in the first set of media files does not exceed a minimum number. A query is constructed based on the title or description of the selected media file to locate more related media files. A media database is searched and the results are combined with the first set of media files to be displayed.

Abstract: Methods are provided for identifying media files that are related to a user-selected media file. Initially, a first set of media files that have previously been determined to be related to the selected media file is identified. It is determined that the number of media files in the first set of media files does not exceed a minimum number. A query is constructed based on the title or description of the selected media file to locate more related media files. A media database is searched and the results are combined with the first set of media files to be displayed.

Abstract: It has been found that user navigation that follows search engine interactions provides implicit endorsement of resources (such as web resources) that are preferred by users, and which may be particularly valuable for exploratory search tasks. Thus, a combination of past searching and browsing user behavior is analyzed to identify additional information that augments search results delivered by a search engine. The additional information may include a display of hyperlinks to locations which are derived from the past searching and browsing user behavior, given a specific input query. The additional information may be provided to supplement web search results.

Abstract: It has been found that user navigation that follows search engine interactions provides implicit endorsement of resources (such as web resources) that are preferred by users, and which may be particularly valuable for exploratory search tasks. Thus, a combination of past searching and browsing user behavior is analyzed to identify additional information that augments search results delivered by a search engine. The additional information may include a display of hyperlinks to locations which are derived from the past searching and browsing user behavior, given a specific input query. The additional information may be provided to supplement web search results.