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
    • 4. 发明申请
    • Apparatus and method to measure a molecular diffusion coefficient in a porous powder
    • 测量多孔粉末中分子扩散系数的装置和方法
    • US20160091409A1
    • 2016-03-31
    • US14530754
    • 2014-11-02
    • Fei WangDezheng WangYao Wang
    • Fei WangDezheng WangYao Wang
    • G01N15/08
    • G01N15/0826G01N33/00G01N2033/0091
    • An apparatus and method for measuring molecular diffusivity in porous powders or minerals, e.g., the microporous synthetic minerals used for gas separation and chemical catalysis, were invented that allows a varying pressure in the gas around the powder during the measurement. This obviates the need for the pressure to be constant and the attendant complicated component parts. A mass balance model equation of the sample cell with the diffusivity as an adjustable parameter is used to deduce the sample cell pressure change versus time (uptake curve) until the equilibration of gas diffusion into the powder. A numerical analysis method is used to solve the mathematical model to compute a simulated uptake curve. Curve fitting of the simulated and measured uptake curves is used to optimize the diffusivity parameter, which gives the measured diffusivity. The apparatus and method are simple, easy to use, and automation is also simple.
    • 发明了用于测量多孔粉末或矿物质中的分子扩散率的装置和方法,例如用于气体分离和化学催化的微孔合成矿物质,其允许在测量期间在粉末周围的气体中变化的压力。 这避免了压力恒定的需要和附带复杂的部件。 使用具有扩散率作为可调参数的样品池的质量平衡模型方程来推导样品池压力变化对时间(吸收曲线),直到气体扩散到粉末中的平衡。 使用数值分析方法来求解模拟吸收曲线的数学模型。 使用模拟和测量的吸收曲线的曲线拟合来优化扩散系数参数,这给出了测量的扩散系数。 该设备和方法简单,易于使用,自动化也很简单。
    • 7. 发明授权
    • Multiple description coding communication system
    • 多描述编码通信系统
    • US08594205B2
    • 2013-11-26
    • US11869443
    • 2007-10-09
    • Hamid JafarkhaniMichael T. OrchardAmy R. ReibmanYao Wang
    • Hamid JafarkhaniMichael T. OrchardAmy R. ReibmanYao Wang
    • H04B14/06
    • H03M7/40H04N19/39H04N19/61
    • A method and apparatus reliably encode and decode information over a communication system. The method includes transforming two coefficients into two pairs of random variables, one random variable in each pair having substantially equal energy as one random variable in the other pair. The method further includes quantizing each of the pairs of random variables and entropy coding each quantized random variable separately creating an encoded bitstreams. The encoded bitstreams are received by a decoder which first determines which channels of the communication system are working. The encoded bitstream is entropy decoded, inversed quantized and inversed transformed. An inverse transform performs three different transformations depending upon which channels are working, i.e., whether the first, second or both channels are working.
    • 一种方法和装置通过通信系统可靠地编码和解码信息。 该方法包括将两个系数变换成两对随机变量,每对中的一个随机变量具有基本相等的能量作为另一对中的一个随机变量。 该方法还包括量化每对随机变量,并对每个量化的随机变量进行熵编码,分别创建编码比特流。 编码的比特流由解码器接收,该解码器首先确定通信系统的哪些信道正在工作。 编码比特流被熵解码,反相量化和反转换。 逆变换根据哪个通道工作,即第一,第二或两个通道是否工作,执行三种不同的变换。