Ultra

摘要： 虽然今年中兴最新的旗舰Axon 30系列一来就祭出两款“满血机型”,完全没有什么“标准版”的玩法;虽然这Axon 30 Pro和Axon 30 Ultra都有着足够“傲然于群雄”的底气,且特点鲜明。但是,中兴显然不会就此停下自己的节奏,毕竟2021年才过去一半有余,毕竟竞品们的新品输出依然前赴后继。所以,构筑于Axon 30系列体系之内的新角色,中兴自觉已经到了摆上前台的时机。

摘要： Introduction: Conventional metabolite analyses often require manual sample preparation, generating variability of measurements. This study describes a new method to quantify radiometabolites in blood, combining ultra high performance liquid chromatography (UHPLC) and turbulent flow chromatography, an alternative fully automated process allowing analyte’s extraction. Methods: A new radiotracer for dopamine transporter imaging, namely LBT-999, was used to demonstrate the method’s robustness. Matrix effect, Turboflow column loading, linearity, specificity and precision were evaluated with in vitro samples of LBT-999 in human plasma. Radiodetector sensitivity and preliminary evaluation were respectively determined by analysis of calibrated samples of [18F]LBT-999 and blood samples from 4 healthy subjects injected with [18F]LBT-999, withdrawn at 5, 15, 30 and 45 min pi. Results: With three sequential loadings (3 × 100 μL) of the Turboflow column, mean coefficients of variation were 1%, below 2%, 2% and 30.9% for matrix effect, specificity, repeatability and intermediate precision, respectively. Correlation coefficients for linearity were superior to 0.97. Limits of detection and quantification of the radiodetector were fixed at 3 and 9 c/s. Retention times for [18F]LBT-999 and the two radiometabolites detected by radio-UHPLC were 6.5, 4.8 and 9.6 min. Forty-five min after the injection, parent fraction was still predominant with 57.8% ± 25% of the total radioactivity. Conclusions: An innovative approach, allying UHPLC and Turboflow column, was developed and its sensitivity, linearity, specificity and repeatability validated. Preliminary results of the clinical trial are in accordance with literature data, demonstrating its efficiency in radiometabolites quantification.

摘要： This paper presents the analytical design and high performance of step-constant tapered slot antenna (STSA) for ultra-wideband application. The return loss, radiation pattern, antenna gain, and level of cross polarization of this antenna are presented and analyzed. Utilizing Rogers (RO3006) substrate having a relative permittivity of 6.15, the proposed antenna provides the ultra-wideband (UWB) from 3.1 GHz to 10.6 GHz. It is observed that the return loss and gain are increased with increasing the step size. It has been observed from the simulation results incorporating CST microwave studio commercial software version 2015, the optimum return loss, directivity and gain are ?43 dB, 10.52 dBi and 10.20 dB, respectively, for 15 step size. Therefore, the newly proposed antenna will be a decent candidate for ultra-wideband application.

摘要： Measurement and characterization of ultra wideband (UWB) propagation and transmission within small spacecrafts were investigated with a view to (at least partly) displacing wired interface buses in spacecrafts with wireless links. Measurements were conducted in a mechanical test model of a small spacecraft and an equivalent shield box. The impact of apertures perforated on the outer surface and radio absorbers within the box were also examined. The following properties were derived there from: channel responses in the frequency- and time-domain, spatial distributions of UWB and narrowband propagation gains, delay spreads, and throughputs, the relation between delay spread and area of apertures and the absorber, and the relation between fading depth and the bandwidth. On the effects of apertures, the larger total area of apertures resulted in lower UWB propagation gains, shorter delay spreads, and slightly higher link throughput. Commercially off-the-shelf UWB devices were used in the experiments of UWB technology to facilitate a high data rate.

摘要： A multiuser Ultra Wide Band (UWB) channel suffers seriously from realistic impairments. Among this, multipath fading and interferences, such as Multiple Access Interference (MAI) and Inter Symbol Interference (ISI), that significantly degrade the system performance. In this paper, a polar coding technique, originally developed by Arikan, is suggested to enhance the BER performance of indoor UWB based Orthogonal Frequency Division Multiplexing (OFDM) communications. Moreover, Interleave Division Multiple Access (IDMA) scheme has been considered for multiuser detection depending on the turbo type Chip-By-Chip (CBC) iterative detection strategy. Three different models as Symmetric Alpha Stable (SαS), Laplace model and Gaussian Mixture Model (GMM), have been introduced for approximating the interferences which are more realistic for UWB system. The performance of the proposed Polar-coded IDMA OFDM-based UWB system is investigated under UWB channel models proposed by IEEE 802.15.3a working group and compared with Low Density Parity Check (LDPC)-coded IDMA OFDM-based UWB system in terms of BER performance and complexity under the studied noise models. Simulation results show that the complexity of the proposed polar-coded system is much lower than LDPC-coded system with minor performance degradation. Furthermore, the proposed polar-coded system is robust against noise and interferences in UWB indoor environment and gains a significant performance improvement by about 5 dB compared with un-coded IDMA-OFDM-UWB system under the studied noise models.

摘要： This paper presents the design of a small printed ultra wideband antenna with Band Notched characteristics. Both the free space and on-body performances of this antenna were investigated through simulation. The newly designed UWB antenna is more revised small form factor sized, with the ability to avoid interference caused by WLAN (5.15 - 5.825 GHz) and WiMAX (5.25 - 5.85 GHz) systems with a band notch. The return loss response, gain, radiation pattern on free space of the antenna were investigated. After that, the on-body performances were tested on 3-layer human body model with radiation pattern, gain, return loss, and efficiency at 3.5, 5.7, 8, 10 GHz and all the results were compared with free space results. As the on-body performance was very good, the proposed antenna will be suitable to be used for multi-purpose medical applications and sports performance monitoring.

摘要： This paper proposes a printed log-periodic dipole antenna (LPDA) for ultra wide bandwidth (UWB) applications. The antenna comprises of cascading four U shaped elements of different line lengths with balun circuit to improve the antenna impedance matching. The proposed antenna dimensions are 50 × 50 mm2 with FR4 substrate thickness 0.8 mm. Full-wave EM solver HFSS (High Frequency Structure Simulator) is used for modeling the proposed antenna. The pulse distortion is verified by the measured the proposed antenna performance with virtually steady group delay. The simulation and experimental results show that the proposed antenna exhibits good impedance matching, stable radiation patterns throughout the whole operating frequency bands, acceptable gain and stable group delay over the entire operating band. An UWB extended from 1.85 GHz to 11 GHz is obtained, and the average antenna gain is about 5.5 dBi over the operating band with peak gain around 6.5 dBi and 70% average radiation efficiency.

摘要： In order to solve the data surge brought by largescale increasing of mobile de-vices, Massive MIMO ultra dense networking can greatly improve the system spectral efficiency and energy efficiency. It plays an important role in coping with the exponential growth of the business, but also brought big problems and challenges. For heterogeneous ultra dense networks, both macro and femto users are facing with both the cross-layer interference and co-layer in-terference. The precoding technology studied in this paper resolves the cross-layer interference and co-layer interference for macro users and femto users, and lays a theoretical foundation for the deployment of heterogeneous and ultra dense networks.

摘要： 本发明涉及ULTRA‑低延迟LTE下行链路帧结构。提供了一种用于管理无线通信系统中的用户设备通信的数据结构。在一些示例中，数据结构可以包括一个或多个资源元素块，其中，在定义下行链路子帧中的传输时间间隔的符号内，下行链路信道的频率带宽被划分成一个或多个资源元素块。此外，数据结构可以包括一个或多个资源元素块中的至少一个资源元素块内的控制区域和数据区域。另外，数据结构可以包括位于控制区域内的针对由下行链路信道服务的用户设备的下行链路资源准许。在另一个方面，提供了一种用于生成示例数据结构的网络实体和方法。

摘要： 提供了一种用于管理无线通信系统中的用户设备通信的数据结构。在一些示例中，数据结构可以包括一个或多个资源元素块，其中，在定义下行链路子帧中的传输时间间隔的符号内，下行链路信道的频率带宽被划分成一个或多个资源元素块。此外，数据结构可以包括一个或多个资源元素块中的至少一个资源元素块内的控制区域和数据区域。另外，数据结构可以包括位于控制区域内的针对由下行链路信道服务的用户设备的下行链路资源准许。在另一个方面，提供了一种用于生成示例数据结构的网络实体和方法。

摘要： 本发明提供了一种Ultra-VEGF-trap免疫融合蛋白，所述的蛋白是1）或2）中的蛋白：1）如SEQ？ID.1所示的氨基酸序列组成的蛋白质；2）如SEQ？ID.1所示的氨基酸序列经过取代和／或缺失和／或添加一个或几个氨基酸且抗肿瘤相关由1）衍生的蛋白质。本发明还提供了一种Ultra-VEGF-trap免疫融合蛋白的构建方法及其用途。本发明的免疫融合蛋白全部阻断了VEGFs/VEGFRs传导途径，具有巨大的治疗多种恶性肿瘤的价值。

摘要： 要求保护的发明提供了新的样品制备方法，使得可以用焦磷酸测序技术直接对PCR产物进行测序。所述PCR产物可以是基因组的特定区域。本发明的公开内容中提供的技术可以用于在一个个体或个体的群体中对个体等位基因多态性进行SNP(单核苷酸多态性)检测、分类和评价。结果可以用于患者的诊断和治疗，以及病毒和细菌群体鉴别的评价。

摘要： 本发明涉及ULTRA‑低延迟LTE下行链路帧结构。提供了一种用于管理无线通信系统中的用户设备通信的数据结构。在一些示例中，数据结构可以包括一个或多个资源元素块，其中，在定义下行链路子帧中的传输时间间隔的符号内，下行链路信道的频率带宽被划分成一个或多个资源元素块。此外，数据结构可以包括一个或多个资源元素块中的至少一个资源元素块内的控制区域和数据区域。另外，数据结构可以包括位于控制区域内的针对由下行链路信道服务的用户设备的下行链路资源准许。在另一个方面，提供了一种用于生成示例数据结构的网络实体和方法。

摘要： 基于Ultra‑Flex的FPGA测试方法，涉及集成电路测试技术，本发明包括下述步骤：1)建立Verilog模型，生成FPGA的配置文件和仿真波形文件；2)读取配置文件，生成编程向量；3)读取步骤1)的仿真波形文件，生成测试向量；4)建立Ultra Flex配置模板和测试模板，使用Ultra Flex的编译工具编译编程、测试向量；5)调用Ultra Flex的配置模板自动读取编程向量，调用Ultra Flex的测试模板自动读取测试向量，实现对FPGA的在线测试。本发明可以提高测试效率，降低测试时间成本。

摘要： 提供了一种用于管理无线通信系统中的用户设备通信的数据结构。在一些示例中，数据结构可以包括一个或多个资源元素块，其中，在定义下行链路子帧中的传输时间间隔的符号内，下行链路信道的频率带宽被划分成一个或多个资源元素块。此外，数据结构可以包括一个或多个资源元素块中的至少一个资源元素块内的控制区域和数据区域。另外，数据结构可以包括位于控制区域内的针对由下行链路信道服务的用户设备的下行链路资源准许。在另一个方面，提供了一种用于生成示例数据结构的网络实体和方法。

摘要： 本发明涉及一种铜水箱UltraFuse焊接工艺。1）准备铜水箱主片和散热管；2）通过自动氩弧焊将散热管和主片局部融化，冷却后形成铜合金的接头；3）用传统的锡钎焊进行焊接，将局部未密封的区域填充密封。本发明的优点是：母材熔接部分强度高，在应力的作用下不易产生变形，因此可以较好的保护起密封作用的锡焊料，其寿命高，UltraFuse焊接工艺制作的水箱能达到锡钎焊制作的水箱寿命8倍以上。

摘要： 本发明提供了应用于脸部Multi‑ultra提升修补用埋线装置及其使用方法，包括：穿刺装置、埋线机构和切线装置；所述穿刺装置刺入面部皮肤内；所述埋线机构设置在穿刺装置的内部，且埋线机构的外壁缠绕有蛋白线。通过将穿刺装置刺入指定位置后，推动埋线机构将蛋白线拉直后挂在患者肌肉组织内，在穿刺装置外部滑动切线装置，使得切线装置紧贴患者面部皮肤后，通过患者面部皮肤后将埋线机构表面蛋白线切断，在拔出穿刺装置后，蛋白线在皮肤组织内呈现直线状态，将患者的松垂皮肤组织通过通过蛋白线挂在肌肉组织上，起到对患者皮肤的提升作用，防止因蛋白线长度过长，导致蛋白线在皮肤组织内弯曲，避免蛋白线无法对勾连的皮肤组织起到较好的牵引效果。

摘要： 本发明涉及一种差分UWB(ultra‑wide band)定位方法。该方法将卫星定位中普遍使用的差分思想引入UWB定位算法中，通过定位结果或原始观测值间做差的方式，来消除公共系统误差对定位精度的影响。差分定位可分为位置域差分和观测值域差分。其中，位置域差分不要求两标签观测相同基站，原理更为简单，但精度较低；观测值域差分更加准确，但要求两标签有一定数量的相同观测基站。本发明结合两种差分方法，提出了一种基于位置差分和观测值差分的UWB定位方法。与传统方法相比，通过引入基准标签进行差分，有效减弱了系统误差对定位精度的影响，提高了UWB的定位精度。同时，使UWB基站的使用数量减少，降低了UWB定位系统的建设成本。