Abstract: The subject matter of this specification can be implemented in, among other things, a method that includes providing a mid state, a fullscreen state, and a miniplayer state of a touchscreen user interface for presentation on a touchscreen device. The mid state presents a first video from a queue of videos and portions of a previous video or a next video from the queue of the videos. The fullscreen state expands the first video to fit the touchscreen user interface without presentation of the portions of the previous video or the next video. The miniplayer state shrinks the first video to fit a list of videos for a user account within the touchscreen user interface.

Abstract: Described herein is a method for managing media item playback. A method includes receiving a media request to play a media item via a first user interface (UI) on a mobile device. The method further includes causing a media player in a second UI to play the media item. The method also includes displaying a representation of the media item in a first portion of the first UI, the first portion of the first UI being associated with the media player in the second UI. The method includes receiving, via a second portion of the first UI, an activity request to perform an activity that is independent of the viewing of the media item. The method further includes and presenting content associated with the requested activity in the first UI while continuing to display, in the first portion of the first UI, the representation of the media item played in the media player in the second UI.

Abstract: Described herein is a method for managing media item playback. A method includes presenting a media player in a first portion of a user interface (UI) on a mobile device, the media player to provide playback of a first media item. The method also includes receiving a user selection of a second media item via a second portion of the UI. The user selection indicates a user request to move the second media item from the second portion of the UI to the first portion of the UI. The method further includes upon receiving the user selection, causing the media player to provide playback of the second media item when playback of the first media item is complete. The method includes receiving, via a second portion of the UI, a user request to perform an activity that is independent of the viewing of the first media item or the second media item.

Abstract: A device is disclosed that includes an interface component configured to generate a user interface for playing and requesting videos and a reception component configured to receive a subset of videos from a set of videos in accordance with a video streaming session having a preset duration of time and play the subset of videos for the preset duration of time via the user interface. The device further includes a request component configured to request an increase to the preset duration of time of the video streaming session by a segment of time after reception of a video included in the subset of videos, wherein in response to the request, the reception component is configured to receive the subset of videos for an amount of time including the preset duration of time plus the segment of time and play the subset of videos for the amount of time.

Abstract: A dynamic media player is disclosed. A method for providing the dynamic media player includes presenting a media player in a first portion of a user interface (UI) of a content sharing platform on a mobile device. The media player is to provide playback of a media item. The method further includes receiving, via a second portion of the UI, a user request to perform an activity that is independent of the viewing of the media item. The method further includes presenting content associated with the requested activity while continuing to provide playback of the media item in the media player of the first portion of the UI.

Abstract: A method for providing an adjustable video player is disclosed. The method includes providing, by an electronic device, a content item player for playback of a content item in a portion of a user interface (UI) of an application executed on the electronic device and receiving an indication of a gesture to minimize the content item player made by a user of the electronic device. The method further includes minimizing the content item player into a mini-player shown on the application UI without interrupting the playback of the content item in the content item player.

Abstract: A bubbler chamber assembly comprising one chamber or two or more chambers connected in series, all chambers being in substantially vertical orientation. A solid or liquid source of the compound is contained in the chamber or chambers. The ratio between the length of the chamber or combined length of chambers connected in series with respect to the direction of flow of the carrier gas through the chamber or chambers and the average diameter equivalent of the cross section of the chamber or chambers with respect to the direction of flow of the carrier gas through the chamber or chambers is not less than about 6:1.

Abstract: A bubbler chamber assembly comprising one chamber or two or more chambers connected in series, all chambers being in substantially vertical orientation. A solid or liquid source of the compound is contained in the chamber or chambers. The ratio between the length of the chamber or combined length of chambers connected in series with respect to the direction of flow of the carrier gas through the chamber or chambers and the average diameter equivalent of the cross section of the chamber or chambers with respect to the direction of flow of the carrier gas through the chamber or chambers is not less than about 6:1.