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31. 发明申请

US20110124500A1 CATALYTIC PLATINUM-COPPER ALLOY NANOPARTICLES 有权
标题翻译：催化铂 - 铜合金纳米粒子
公开(公告)号：US20110124500A1
公开(公告)日：2011-05-26
申请号：US12953422
申请日：2010-11-23
申请人： Jiye Fang , Dan Xu
发明人： Jiye Fang , Dan Xu
IPC分类号： B01J23/42 , B01J37/16 , B01J23/89 , B82Y40/00 , B82Y30/00
CPC分类号： B01J35/0013 , B01J23/8906 , B01J23/8913 , B01J23/892 , B01J23/8926 , B01J37/03 , B01J37/04 , B82Y30/00 , B82Y40/00 , H01M4/921
摘要： High-quality bimetallic PtxCu100-x (x=54-80 at. %) nanocubes can be prepared from a hot organic solution. Synthetic conditions, such as the ratio of oleylamine/tetraoctylammonium bromide as well as the doses of 1-dodecanethiol and 1,2-tetradecanediol have been optimized to ensure a formation of Pt—Cu nanocubes. Electrochemical evaluation shows that the catalytic activity of Pt60Cu40 nanocubes for methanol oxidation is superior, in comparison with those of spherical Pt60Cu40 nanocubes and Pt nanocubes with similar sizes, implying that the {100}-terminated Pt60Cu40 nanocubes offer a higher activity for methanol oxidation reaction than those with mixed crystallographic facets do. As another example, it was identified that Pt80Cu20 nanocubes is the best electrocatalyst on the basis of the maintainable electrocatalytic activity (which is even slightly superior to that of pure Pt nanocubes) and remarkable long-term stability (˜300 hours vs 3 hours for Pt nanocubes) when being performed towards formic acid oxidation reaction.
摘要翻译：高品质双金属PtxCu100-x（x = 54-80原子％）纳米管可以由热的有机溶液制备。已经优化了合成条件，例如油胺/四辛基溴化铵的比例以及1-十二烷硫醇和1,2-十四烷二醇的剂量，以确保形成Pt-Cu纳米管。电化学评价表明，Pt60Cu40纳米管对甲醇氧化的催化活性优于与具有相似尺寸的球形Pt60Cu40纳米管和Pt纳米管的催化活性相反，这意味着{100}终止的Pt60Cu40纳米立方体提供了更高的甲醇氧化反应活性，具有混合晶体面的那些。作为另一个例子，鉴于Pt80Cu20纳米立方体是可维持的电催化活性（甚至比纯Pt纳米立方体甚至略优）的最佳电催化剂和显着的长期稳定性（〜300小时对Pt的3小时纳米立方体）当进行甲酸氧化反应时。

32. 发明授权

US07592809B1 Hybrid k-t method of dynamic imaging with improved spatiotemporal resolution 有权
标题翻译：动态成像的混合k-t方法具有改进的时空分辨率
公开(公告)号：US07592809B1
公开(公告)日：2009-09-22
申请号：US11287184
申请日：2005-11-23
申请人： Kevin F. King , Dan Xu , Zhi-Pei Liang
发明人： Kevin F. King , Dan Xu , Zhi-Pei Liang
IPC分类号： G01V3/00
CPC分类号： G01R33/5611 , G01R33/56308
摘要： Variable-density (VD), sequentially-interleaved sampling of k-space coupled with the acquisition of reference frames of data is carried out to improve spatiotemporal resolution, image quality, and signal-to-noise ratio (SNR) of dynamic images. In one example, ktSENSE is implemented with a non-static regularization image, such as that provided by RIGR or similar technique, to acquire and reconstruct dynamic images. The integration of ktSENSE and RIGR, for example, provides dynamic images with higher spatiotemporal resolution and lower image artifacts compared to dynamic images acquired and reconstructed using ktSENSE alone.
摘要翻译：执行可变密度（VD），与数据参考帧的采集相结合的k空间的顺序交错采样，以改善动态图像的时空分辨率，图像质量和信噪比（SNR）。在一个示例中，ktSENSE通过诸如由RIGR或类似技术提供的非静态正则化图像来实现以获取和重建动态图像。例如，与使用ktSENSE单独获取和重建的动态图像相比，ktSENSE和RIGR的集成提供了具有更高时空分辨率和较低图像伪影的动态图像。

33. 发明授权

US08717024B2 System and method for generating a magnetic resonance image using compressed sensing and parallel imaging 有权
标题翻译：使用压缩感测和并行成像产生磁共振图像的系统和方法
公开(公告)号：US08717024B2
公开(公告)日：2014-05-06
申请号：US13342857
申请日：2012-01-03
申请人： Kevin F. King , Dan Xu
发明人： Kevin F. King , Dan Xu
IPC分类号： G01R33/44
CPC分类号： G01R33/5611
摘要： A method for generating a magnetic resonance image includes acquiring a first k-space data set from each of a plurality of RF coils. The first k-space data set includes calibration data and randomly undersampled data. For each RF coil, a fully randomly sampled k-space data set is generated by removing a portion of the calibration data. A compressed sensing reconstruction technique is applied to the fully randomly sampled k-space data set to generate an aliased image, which is used to generate a uniformly undersampled k-space data set. A second k-space data set is generated by inserting the portion of the calibration data and a parallel imaging reconstruction technique is applied to the second k-space data set to synthesize unacquired data. The second k-space data set and the synthesized data are combined to generate a complete k-space data set for the RF coil.
摘要翻译：用于产生磁共振图像的方法包括从多个RF线圈中的每一个获取第一k空间数据集。第一个k空间数据集包括校准数据和随机欠采样数据。对于每个RF线圈，通过去除一部分校准数据来生成完全随机采样的k空间数据集。将压缩感测重构技术应用于完全随机采样的k空间数据集，以生成用于生成统一欠采样的k空间数据集的混叠图像。通过插入校准数据的一部分来生成第二k空间数据集，并且将并行成像重构技术应用于第二k空间数据集合以合成未查询的数据。第二k空间数据组和合成数据被组合以产生用于RF线圈的完整的k空间数据集。

34. 发明授权

US08680860B2 System and method for reducing localized signal fluctuation 有权
标题翻译：减少局部信号波动的系统和方法
公开(公告)号：US08680860B2
公开(公告)日：2014-03-25
申请号：US12962945
申请日：2010-12-08
申请人： Dan Xu , Jian Zhang , Richard Scott Hinks , Kevin F. King
发明人： Dan Xu , Jian Zhang , Richard Scott Hinks , Kevin F. King
IPC分类号： G01V3/00
CPC分类号： G01R33/4838 , G01R33/5607
摘要： A system and method is disclosed for eliminating localized fluctuation artifacts caused by fat signal contamination in MR images, the system includes a magnetic resonance imaging (MRI) system having a plurality of gradient coils positioned about a bore of a magnet, and an RF transceiver system and an RF switch controlled by a pulse module to transmit RF signals to an RF coil assembly to acquire MR images, and a computer programmed to apply a spectral-spatial fat saturation pulse, apply a slice selection gradient pulse, acquire imaging data of an imaging slice of interest, and generate an image.
摘要翻译：公开了一种用于消除由MR图像中的脂肪信号污染引起的局部波动伪影的系统和方法，该系统包括具有围绕磁体的孔定位的多个梯度线圈的磁共振成像（MRI）系统，以及RF收发器系统以及由脉冲模块控制的RF开关以将RF信号传输到RF线圈组件以获取MR图像，以及被编程为应用频谱 - 空间脂肪饱和脉冲的计算机，应用切片选择梯度脉冲，获取成像的成像数据切片感兴趣，并生成图像。

35. 发明授权

US08592339B2 Catalytic platinum-copper alloy nanoparticles 有权
标题翻译：催化铂 - 铜合金纳米粒子
公开(公告)号：US08592339B2
公开(公告)日：2013-11-26
申请号：US12953422
申请日：2010-11-23
申请人： Jiye Fang , Dan Xu
发明人： Jiye Fang , Dan Xu
IPC分类号： B01J23/00 , B01J21/00
CPC分类号： B01J35/0013 , B01J23/8906 , B01J23/8913 , B01J23/892 , B01J23/8926 , B01J37/03 , B01J37/04 , B82Y30/00 , B82Y40/00 , H01M4/921
摘要： High-quality bimetallic PtxCu100-x (x=54-80 at. %) nanocubes can be prepared from a hot organic solution. Synthetic conditions, such as the ratio of oleylamine/tetraoctylammonium bromide as well as the doses of 1-dodecanethiol and 1,2-tetradecanediol have been optimized to ensure a formation of Pt—Cu nanocubes. Electrochemical evaluation shows that the catalytic activity of Pt60Cu40 nanocubes for methanol oxidation is superior, in comparison with those of spherical Pt60Cu40 nanocubes and Pt nanocubes with similar sizes, implying that the {100}-terminated Pt60Cu40 nanocubes offer a higher activity for methanol oxidation reaction than those with mixed crystallographic facets do. As another example, it was identified that Pt80Cu20 nanocubes is the best electrocatalyst on the basis of the maintainable electrocatalytic activity (which is even slightly superior to that of pure Pt nanocubes) and remarkable long-term stability (˜300 hours vs 3 hours for Pt nanocubes) when being performed towards formic acid oxidation reaction.
摘要翻译：高品质双金属PtxCu100-x（x = 54-80原子％）纳米管可以由热的有机溶液制备。已经优化了合成条件，例如油胺/四辛基溴化铵的比例以及1-十二烷硫醇和1,2-十四烷二醇的剂量，以确保形成Pt-Cu纳米管。电化学评价表明，Pt60Cu40纳米管对甲醇氧化的催化活性优于与具有相似尺寸的球形Pt60Cu40纳米管和Pt纳米管的催化活性相反，这意味着{100}终止的Pt60Cu40纳米立方体提供了更高的甲醇氧化反应活性，具有混合晶体面的那些。作为另一个例子，鉴于Pt80Cu20纳米立方体是可维持的电催化活性（甚至略高于纯Pt纳米管）的最佳电催化剂和显着的长期稳定性（〜300小时对Pt的3小时纳米立方体）当进行甲酸氧化反应时。

36. 发明申请

US20130265045A1 SYSTEM AND METHOD FOR MULTISTATION IMAGE PASTING FOR WHOLE BODY DIFFUSION-WEIGHTED IMAGING 审中-公开
标题翻译：用于多体图像贴图的系统和方法，用于全身体扩散加权成像
公开(公告)号：US20130265045A1
公开(公告)日：2013-10-10
申请号：US13441047
申请日：2012-04-06
申请人： Dan Xu
发明人： Dan Xu
IPC分类号： G01R33/48 , G01R33/341
CPC分类号： G01R33/56518 , G01R33/56341 , G01R33/56383
摘要： An MRI system includes a plurality of gradient coils positioned about a bore of a magnet, an RF transceiver system and an RF switch controlled by a pulse module to transmit RF signals to an RF coil assembly to acquire MR images, and a computer programmed to execute a diffusion-weighted imaging pulse sequence to acquire MR data from a subject over two or more stations, acquire imaging data of the subject over the two or more stations, reconstruct images that correspond to each of the two or more stations, and calculate an average intensity signal per slice within each of the reconstructed images. The computer is further programmed to adjust intensity within at least one of the reconstructed images based on the calculated average intensity signal within each of the reconstructed images and form a pasted image using a reconstructed image having its intensity adjusted and another reconstructed image.
摘要翻译： MRI系统包括围绕磁体的孔定位的多个梯度线圈，RF收发器系统和由脉冲模块控制的RF开关，以将RF信号传输到RF线圈组件以获取MR图像，以及被编程为执行的计算机扩散加权成像脉冲序列，用于通过两个或更多个站获取来自受试者的MR数据，通过两个或更多个站采集对象的成像数据，重建与两个或更多个站中的每个站对应的图像，并计算平均值每个重建图像中的切片的强度信号。计算机还被编程为基于在每个重建图像内的所计算的平均强度信号来调整至少一个重建图像内的强度，并使用其强度调整的重构图像和另一重构图像形成粘贴图像。

37. 发明申请

US20120271584A1 SYSTEM AND METHOD FOR PROSPECTIVE CORRECTION OF HIGH ORDER EDDY-CURRENT-INDUCED DISTORTION IN DIFFUSION-WEIGHTED ECHO PLANAR IMAGING 有权
标题翻译：用于扩展加权ECHO平面成像中高阶EDDY电流诱导失真的前瞻性校正的系统和方法
公开(公告)号：US20120271584A1
公开(公告)日：2012-10-25
申请号：US13364003
申请日：2012-02-01
申请人： Dan Xu , Joseph K. Maier , Kevin F. King , Bruce David Collick
发明人： Dan Xu , Joseph K. Maier , Kevin F. King , Bruce David Collick
IPC分类号： G01R35/00
CPC分类号： G01R33/56518 , G01R33/5616 , G01R33/56341
摘要： A computer is programmed to acquire calibration data from a calibration scan, the calibration data configured to characterize high order eddy current (HOEC) generated magnetic field error of an imaging system. The computer is also programmed to process the calibration data to generate a plurality of basis coefficients and a plurality of time constants and to calculate a plurality of basis correction coefficients based on the plurality of basis coefficients, the plurality of time constants, and gradient waveforms in a given pulse sequence. The computer is further programmed to execute a diffusion-weighted imaging scan that comprises application of a DW-EPI pulse sequence to acquire MR data from an imaging subject and reconstruction of an image based on the acquired MR data. The computer is also programmed to apply HOEC-generated magnetic field error correction during application of the DW-EPI pulse sequence configured to reduce HOEC-induced distortion in the reconstructed image.
摘要翻译：计算机被编程为从校准扫描获取校准数据，校准数据被配置为表征成像系统产生的高阶涡流（HOEC）产生的磁场误差。计算机还被编程为处理校准数据以产生多个基准系数和多个时间常数，并且基于多个基准系数，多个时间常数和梯度波形来计算多个基准校正系数给定的脉冲序列。计算机还被编程为执行扩散加权成像扫描，其包括应用DW-EPI脉冲序列以从成像对象获取MR数据并且基于所获取的MR数据重建图像。计算机还被编程为在应用DW-EPI脉冲序列期间应用HOEC产生的磁场误差校正，其被配置为减少重建图像中HOEC引起的失真。

38. 发明授权

US08229042B2 Orthogonal frequency division multiplexing demodulator 有权
标题翻译：正交频分复用解调器
公开(公告)号：US08229042B2
公开(公告)日：2012-07-24
申请号：US12575057
申请日：2009-10-07
申请人： Koichi Aratani , Hirotake Ishii , Dan Xu
发明人： Koichi Aratani , Hirotake Ishii , Dan Xu
IPC分类号： H04L27/06
CPC分类号： H04L27/2679 , H04L27/2662
摘要： An OFDM demodulator which does not require a reference signal for synchronization of carriers and can reduce influence of phase rotation by a propagation path when carrier synchronization is made. The OFDM demodulator performs Fourier transform plural times in 2 or more different operation ranges for the same OFDM symbol, calculates phases of sub carriers from the plural-time results of the Fourier transform, compares the calculated phases for each of the plural-time results of the Fourier transform and detects an error in frequency of reproduction carrier from the compared results.
摘要翻译： OFDM解调器，其不需要用于载波同步的参考信号，并且当进行载波同步时可以减少传播路径的相位旋转的影响。 OFDM解调器在相同的OFDM符号的2个以上的不同的操作范围内进行多次傅立叶变换，从傅里叶变换的多次结果中计算出副载波的相位，傅里叶变换并从比较结果检测再现载波的频率误差。

39. 发明申请

US20120169338A1 System And Method For Generating A Magnetic Resonance Image Using Compressed Sensing And Parallel Imaging 有权
标题翻译：使用压缩感应和平行成像生成磁共振图像的系统和方法
公开(公告)号：US20120169338A1
公开(公告)日：2012-07-05
申请号：US13342857
申请日：2012-01-03
申请人： Kevin King , Dan Xu
发明人： Kevin King , Dan Xu
IPC分类号： G01R33/44
CPC分类号： G01R33/5611
摘要： A method for generating a magnetic resonance image includes acquiring a first k-space data set from each of a plurality of RF coils. The first k-space data set includes calibration data and randomly undersampled data. For each RF coil, a fully randomly sampled k-space data set is generated by removing a portion of the calibration data. A compressed sensing reconstruction technique is applied to the fully randomly sampled k-space data set to generate an aliased image, which is used to generate a uniformly undersampled k-space data set. A second k-space data set is generated by inserting the portion of the calibration data and a parallel imaging reconstruction technique is applied to the second k-space data set to synthesize unacquired data. The second k-space data set and the synthesized data are combined to generate a complete k-space data set for the RF coil.
摘要翻译：用于产生磁共振图像的方法包括从多个RF线圈中的每一个获取第一k空间数据集。第一个k空间数据集包括校准数据和随机欠采样数据。对于每个RF线圈，通过去除一部分校准数据来生成完全随机采样的k空间数据集。将压缩感测重构技术应用于完全随机采样的k空间数据集，以生成用于生成统一欠采样的k空间数据集的混叠图像。通过插入校准数据的一部分来生成第二k空间数据集，并且将并行成像重构技术应用于第二k空间数据集合以合成未查询的数据。第二k空间数据组和合成数据被组合以产生用于RF线圈的完整的k空间数据集。

40. 发明授权

US08160587B2 Radio access terminal, base station controller, and handoff control method in radio communication system 失效
标题翻译：无线电接入终端，基站控制器和无线电通信系统中的切换控制方法
公开(公告)号：US08160587B2
公开(公告)日：2012-04-17
申请号：US12423049
申请日：2009-04-14
申请人： Dan Xu , Yuichiro Katsu , Tsutomu Uchida , Shiro Mazawa
发明人： Dan Xu , Yuichiro Katsu , Tsutomu Uchida , Shiro Mazawa
IPC分类号： H04W36/00
CPC分类号： H04W36/32 , H04W36/30 , H04W84/045
摘要： In a radio communication system wherein radio frequencies for communicating with a radio terminal are different in radio base stations, a table in which positional information, information on the frequency used for transmission/reception to/from the terminal, and a decision condition in a handoff operation are stored as to each base station is prepared in a base station controller beforehand. When the positional information is received from the radio terminal, the base station controller selects the base station being a handoff candidate, on the basis of the positional information of the radio terminal, the positional information of each base station and the decision condition of the handoff operation with reference to the table, and it transmits a handoff request message which contains the information on the frequency of the base station being the handoff candidate, to the radio terminal through the base station communicating with the radio terminal.
摘要翻译：在无线基站中与无线终端进行通信的无线电频率不同的无线通信系统中，存在位置信息，用于发送/接收终端的频率的信息和切换中的判定条件的表预先在基站控制器中准备每个基站的操作。当从无线终端接收到位置信息时，基站控制器基于无线终端的位置信息，每个基站的位置信息和切换的判定条件，选择作为切换候选的基站并且通过与无线终端通信的基站向无线终端发送包含关于作为切换候选的基站的频率的信息的切换请求消息。

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