会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 81. 发明申请
    • Ultrathin, Molecular-Sieving Graphene Oxide Membranes for Separations Along with Their Methods of Formation and Use
    • 超薄,分子筛石墨烯氧化膜与其形成和使用方法一起分离
    • US20140230653A1
    • 2014-08-21
    • US14180724
    • 2014-02-14
    • Miao YuHang Li
    • Miao YuHang Li
    • B01D71/06B01D67/00
    • B01D71/024B01D67/0046B01D69/12B01D71/021B01D2325/04B01D2325/12
    • Methods for forming an ultrathin GO membrane are provided. The method can include: dispersing a single-layered graphene oxide powder in deionized water to form a single-layered graphene oxide dispersion; centrifuging the graphene oxide dispersion to remove aggregated graphene oxide material from the single-layered graphene oxide dispersion; thereafter, diluting the single-layered graphene oxide dispersion by about ten times or more through addition of deionized water to the graphene oxide dispersion; and thereafter, passing the single-layered graphene oxide dispersion through a substrate such that a graphene oxide membrane is formed on the substrate. Filtration membranes are also provided and can include: a graphene oxide membrane having a thickness of about 1.8 nm to about 180 nm, with the graphene oxide membrane comprises about 3 to about 30 layers of graphene oxide flakes.
    • 提供了形成超薄GO膜的方法。 该方法可以包括:将单层石墨烯氧化物粉末分散在去离子水中以形成单层氧化石墨烯分散体; 离心氧化石墨烯分散体以从单层氧化石墨烯分散体去除聚集的石墨烯氧化物材料; 此后,通过向石墨烯氧化物分散体中加入去离子水将单层石墨烯氧化物分散体稀释约十倍或更多; 然后使单层氧化石墨烯分散体通过基板,使得在基板上形成石墨烯氧化膜。 还提供了过滤膜,并且可以包括:具有约1.8nm至约180nm厚度的石墨烯氧化物膜,石墨烯氧化物膜包含约3至约30层的氧化石墨烯薄片。
    • 84. 发明授权
    • User signal transmitting and receiving method, apparatus and system in OFDMA system
    • OFDMA系统中的用户信号发送和接收方法,装置和系统
    • US08284653B2
    • 2012-10-09
    • US12680411
    • 2008-09-27
    • Hang Li
    • Hang Li
    • H04J11/00
    • H04L5/0007H04L5/0037H04L5/0064H04L27/2626H04L27/2647
    • This invention provides a user signal transmitting method in an OFDMA system, where all the time-frequency grids of each timeslot are divided into sub-channels, each sub-channel comprises Nf sub-carriers overlapping in time, Nf≧4, and in each sub-channel, a maximum value of a frequency interval between adjacent sub-carriers is no less than three times of a minimum value thereof; and when a user message is sent, comprising: generating a modulating signal; allocating a time-frequency grid set which is a union set of sub-channel, where the sub-channel's quantity is determined by the user message's size, and the sub-channel's time-frequency position is selected according to a rule; and mapping the modulating signal to the time-frequency grid set to generate a frequency-domain signal; performing IFFT on the frequency-domain signal to generate a time-domain signal for transmission. This invention also provides a corresponding user signal receiving method, user signal transmitting and receiving apparatus and access system.
    • 本发明提供了一种OFDMA系统中的用户信号发送方法,其中每个时隙的所有时频网格被划分成子信道,每个子信道包括Nf个子载波在时间上重叠,Nf≥4,并且在每个子信道中 子信道中,相邻子载波之间的频率间隔的最大值不小于其最小值的三倍; 并且当发送用户消息时,包括:生成调制信号; 分配作为子信道的联合集的时频网格集,其中子信道的数量由用户消息的大小确定,并且根据规则选择子信道的时频位置; 并将调制信号映射到时间频率网格集合以产生频域信号; 对频域信号执行IFFT以产生用于传输的时域信号。 本发明还提供了相应的用户信号接收方法,用户信号发送和接收装置以及接入系统。
    • 89. 发明授权
    • Calculating global importance of documents based on global hitting times
    • 根据全球打击时间计算文件的全球重要性
    • US07930303B2
    • 2011-04-19
    • US11742276
    • 2007-04-30
    • Tie-Yan LiuHang LiLei QiBin Gao
    • Tie-Yan LiuHang LiLei QiBin Gao
    • G06F7/00G06F17/30
    • G06F17/30864
    • A calculate importance system calculates the global importance of a web page based on a “mean hitting time.” Hitting time of a target web page is a measure of the minimum number of transitions needed to land on the target web page. Mean hitting time of a target web page is an average number of such transitions for all possible starting web pages. The calculate importance system calculates a global importance score for a web page based on the reciprocal of a mean hitting time. A search engine may rank web pages of a search result based on a combination of relevance of the web pages to the search request and global importance of the web pages based on a global hitting time.
    • 计算重要度系统基于“平均打击时间”计算网页的全局重要性。目标网页的打击时间是衡量目标网页上所需的最小转换次数的度量。 目标网页的平均打击时间是所有可能的起始网页的平均数量。 计算重要性系统基于平均击球时间的倒数计算网页的全局重要性得分。 搜索引擎可以基于网页与搜索请求的相关性和基于全局打击时间的网页的全球重要性的组合来对搜索结果的网页进行排序。