Abstract: Embodiments of this application disclose an image file processing method performed at a computing device. The method includes: obtaining RGBA data corresponding to a first image in an image file, and separating the RGBA data to obtain RGB data and transparency data of the first image; encoding the RGB data of the first image according to a first video encoding mode, to generate first stream data; encoding the transparency data of the first image according to a second video encoding mode, to generate second stream data; and combining the first stream data and the second stream data into a stream data segment of the image file.

Abstract: A picture file processing method, apparatus, and computer readable medium are provided. The method includes parsing a picture file, to obtain a picture header information data segment, first stream data, and second stream data of a first image thereof. The first stream data of the first image is decoded to generate red-green-blue (RGB) data of the first image. The second stream data of the first image is decoded to generate Alpha data of the first image. Red-green-blue-alpha (RGBA) data corresponding to the first image are generated according to the RGB data and the Alpha data.

Abstract: The present disclosure discloses a method, apparatus and system for transmitting multimedia data. After accessing to a multimedia conference room, a client encodes multimedia data to be transmitted, and transmits the encoded multimedia data to a multi-point control unit. The client receives a multimedia data packet sent by the multi-point control unit. The multimedia data packet is obtained by the multi-point control unit via encapsulating multimedia data sent by at least one client in the multimedia conference room. The client decodes the multimedia data packet, composes multimedia data obtained after decoding the multimedia data packet, and displays the composed multimedia data.

Abstract: The disclosure relates to a method and system for audio/video communication, and a client. The method includes setting up a connection with a server for audio/video communication, opening multiple windows for the audio/video communication; obtaining an enabling instruction for enabling audio/video communication of any one of the windows for audio/video communication amongst the multiple windows for audio/video communication; disabling audio/video communication for other windows for audio/video communication amongst the multiple windows for audio/video communication according to the enabling instruction.

Abstract: Aligned nanowire arrays were coated with semiconductor shell layers, and optionally with noble metal nanoparticles for use as three dimensional gas sensors. The sensors show room-temperature responses to low concentrations of various gases. Arrays containing different sensor types can discriminate among different gases, based upon changes in conductivity and response times.

Abstract: A composition is provided that includes mesoporous starburst carbon domains. Each of the mesoporous starburst carbon domains is incorporated with particles of metal or metal oxide in an amount of from 40 to 85 total weight percent of the composition. The metal or metal oxide particles can include tin, cobalt, copper, molybdenum, nickel, iron, or ruthenium, or an oxide thereof. The resulting composition when combined with a binder forms a battery electrode. Such a battery electrode operating as an anode in a lithium ion battery has gravimetric capacity of more than 1000 milliampere hours per gram after 15 galvanostatic cycles.

Abstract: A cathode for a magnesium battery that includes a current collector and an active material disposed on the current collector. The active material includes a metal organic framework with a cubic structure having iron or a transition metal on corners of the cubic structure. The corners are linked by a cyano group. The active material may have the formula: (MgA)xMFe(CN)6 wherein A=K, Na, M=Fe, Cu, Ni, Co, Mn, Zn and 0?×?0.67.

Abstract: A method is disclosed for folder transfer based on instant messaging (IM). The method includes receiving from an IM sender a transfer request for transferring a folder-to-be-transferred. The folder-to-be-transferred may contain a plurality of files. The method also includes receiving from the IM sender folder information of the folder-to-be-transferred, determining a receiving folder corresponding to the folder-to-be-transferred on a predetermined storage location, and determining files-to-be-transferred from the plurality of files corresponding to the folder-to-be-transferred based on the folder information. Further, the method includes sequentially sending one transfer request for each of the files-to-be-transferred to the IM sender through a same network connection, receiving the files-to-be-transferred sent sequentially by the IM sender through the same network connection, and storing the received files-to-be-transferred in the receiving folder.

Abstract: The present disclosure discloses a method, apparatus and system for transmitting multimedia data. After accessing to a multimedia conference room, a client encodes multimedia data to be transmitted, and transmits the encoded multimedia data to a multi-point control unit. The client receives a multimedia data packet sent by the multi-point control unit. The multimedia data packet is obtained by the multi-point control unit via encapsulating multimedia data sent by at least one client in the multimedia conference room. The client decodes the multimedia data packet, composes multimedia data obtained after decoding the multimedia data packet, and displays the composed multimedia data.

Abstract: The disclosure relates to a method and system for audio/video communication, and a client. The method includes setting up a connection with a server for audio/video communication, opening multiple windows for the audio/video communication; obtaining an enabling instruction for enabling audio/video communication of any one of the windows for audio/video communication amongst the multiple windows for audio/video communication; disabling audio/video communication for other windows for audio/video communication amongst the multiple windows for audio/video communication according to the enabling instruction.

Abstract: A composition is provided that includes mesoporous carbon domains. Each of the mesoporous carbon domains is incorporated with particles of metal or metal oxide in an amount of from 40 to 85 total weight percent of the composition. The metal or metal oxide particles can include tin, cobalt, copper, molybdenum, nickel, iron, or ruthenium, or an oxide thereof. The resulting composition when combined with a binder from a battery electrode. Such a battery electrode operating as an anode in a lithium ion battery has specific capacities of more than 1000 miliAmperes-hour per gram after 15 of the galvanostatic cycles.

Abstract: A method is disclosed for folder transfer based on instant messaging (IM). The method includes receiving from an IM sender a transfer request for transferring a folder-to-be-transferred. The folder-to-be-transferred may contain a plurality of files. The method also includes receiving from the IM sender folder information of the folder-to-be-transferred, determining a receiving folder corresponding to the folder-to-be-transferred on a predetermined storage location, and determining files-to-be-transferred from the plurality of files corresponding to the folder-to-be-transferred based on the folder information. Further, the method includes sequentially sending one transfer request for each of the files-to-be-transferred to the IM sender through a same network connection, receiving the files-to-be-transferred sent sequentially by the IM sender through the same network connection, and storing the received files-to-be-transferred in the receiving folder.

Abstract: Aligned nanowire arrays were coated with semiconductor shell layers, and optionally with noble metal nanoparticles for use as three dimensional gas sensors. The sensors show room-temperature responses to low concentrations of various gases. Arrays containing different sensor types can discriminate among different gases, based upon changes in conductivity and response times.

Abstract: The embodiments of the present invention disclose a method and a system for sending, receiving and transmitting an offline image and an offline image server. Said method for transmitting an offline image comprises the following steps: in case the second instant messaging terminal can not directly receive an image file from the first instant messaging terminal, the offline image server receives the image file uploading request sent by the first instant messaging terminal; the offline image server returns the downloading index information of said image file to said first instant messaging terminal according to said image file uploading request, the first instant messaging terminal sends said downloading index information to the second instant messaging terminal, and the second instant messaging terminal acquires said image file according to said downloading index information.