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Before a sperm cell matures, the histones in genomic DNA must transform into another form automatically, so that the genetic materials from the male are stored in the sperm head in a safer and more condensed way, explained Liu Mofang, the lead researcher on the team at the Institute of Biochemistry and Cell Biology, a branch of the Chinese Academy of Sciences' Shanghai Institutes for Biological Sciences.

Before a notification is sent to multiple computing devices associated with the notifying account, contextual information for each device is determined. The contextual information can be determined by querying each device for information. The information can include how close each device is relative to other devices associated with the same user, if at least one of the devices is moving, whether the user’s attention is focused on a particular device, whether the user is engaging multiple devices simultaneously, and the like. Once contextual information associated with each device is determined, an appropriate type of alert associated with the notification is determined for each device. Accordingly, upon determining the appropriate alert for the most probable context of each device, the notification is sent to each computing device with the determined appropriate type of alert.

Because most of the candidates for the exam are from isolated areas with inconvenient transportation, the railway group decided in early June to offer round-trip train tickets to ensure they can take the exam in the county successfully.

Beijing dismissed on Thursday spy allegations leveled by Washington and Canberra, after United States and Australian officials said China undermines their security.

Beijing has required subway passengers to undergo body temperature checks when entering stations since Jan 31 in an effort to curb the spread of the novel coronavirus.