Showing 621 - 640 results of 2,868 for search 'Ultron~', query time: 4.59s Refine Results
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    Achieving Ultra‐High Heat Flux Transfer in Graphene Films via Tunable Gas Escape Channels by Haolong Zheng, Peng He, Shujing Yang, Yonghua Lu, Na Guo, Yanhong Li, Gang Wang, Guqiao Ding

    Published 2025-01-01
    “…After optimization, graphene films with ultra‐high thermal conductivity (1781 W m−1 K−1) and a thickness over 100 µm are realized. …”
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  3. 623

    Influence of Distribution Modulus on the Compressive Strength of Ultra-High-Performance Concrete with Coarse Aggregate (UHPC-CA) by Zhihui Yu, Lishan Wu, Cong Zhang, Toshiyuki Bangi

    Published 2022-01-01
    “…The Modified Andreasen and Andersen model (MAA model) is commonly chosen to realize condensed particle packing in ultra-high-performance concretes (UHPCs). In the MAA model, the q (distribution modulus) is a parameter that plays a critical role in the UHPC matrix design. …”
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    Performance of Cracked Ultra-High-Performance Fiber-Reinforced Concrete Exposed to Dry-Wet Cycles of Chlorides by Longlong Niu, Shiping Zhang

    Published 2021-01-01
    “…This paper presents an experimental study on the performance of cracked ultra-high-performance fiber-reinforced concrete (UHPC) exposed to dry-wet cycles of 3.5% NaCl solution under the temperature of 60°C. …”
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  6. 626

    Spectral clustering-based energy-efficient resource allocation algorithm in heterogeneous cellular ultra-dense network by Xue WANG, Jing LIU, Jiani SUN, Jizhen ZHANG, Zhihong QIAN

    Published 2021-07-01
    “…In order to solve problems of high power consumption, spectrum shortage and low energy efficiency in the ultra-intensive 5G mobile communication scenario, a resource allocation algorithm based on the maximum energy efficiency for the two-layer heterogeneous cellular non-orthogonal multiple access network was proposed.The original NP-hard optimization problem on the downlink communication link of ultra-dense scene was divided into two subproblem, such as frequency resource allocation and power allocation, which became a deterministic constraint optimization problem.The frequency resource allocation scheme of different user groups was obtained by using base station clustering based on the improved k-means algorithm and users grouping based on spectral clustering algorithm.The fraction of energy efficiency optimization was transformed into a solvable continuous convex optimization problem and power distribution was realized by Dinkelbach method, and the Lagrange multiplier iterative algorithm, respectively.Jointly optimize system energy efficiency in terms of base station clustering, user grouping, resource block allocation and power allocation, which minimized the inter-cluster interference and intra-cluster interference of the base station efficiently.The simulation results show that the proposed algorithm is better on energy efficiency and computational efficiency compared with existing algorithms.…”
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  7. 627

    Inscribed Fibonacci Circle Fractal in a Circular Radiator for Ultra-Wideband Antenna Operation and Size Reduction by J. A. Tirado-Mendez, D. Martinez-Lara, H. Jardon-Aguilar, R. Flores-Leal, E. A. Andrade-Gonzalez

    Published 2019-01-01
    “…In this article, a Fibonacci circle fractal is inscribed into a circular radiator in order to provide ultra-wideband behavior as well as a 50% size reduction compared to a conventional circular monopole. …”
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    Ultra-small phospholipid nanoparticles in the treatment of combined hyperlipidemia: a randomized placebo-controlled clinical trial by Alexander Archakov, Valery Kukharchuk, Andrey Lisitsa, Elena Ponomarenko, Yulia Romashova, Tatiana Pleshakova, Elena Yarovaya, Vladimir Kutsenko, Maria Guseva, Valery Beregovykh, Olga Ipatova, Marina Zubareva, Elena Tikhonova, Sergei Ivanov, Farid Bedretdinov, Sergey Markin

    Published 2024-12-01
    “…This clinical trial investigated phospholipovit (essential phospholipids, Institute of Biomedical Chemistry, Moscow, Russia), an ultra-small phospholipid nanoparticle (micelles), targeted to phospholipids of HDL in lowering non-HDL-cholesterol (non-HDL-C) and triglycerides (TG) levels in patients with combined hyperlipidemia and moderate cardiovascular risk. …”
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  10. 630

    Advanced optical receiver architectures for ultra-high capacity but low-cost short-reach optical interconnects by Honglin JI, Xueyang LI, Zhixue HE, Weisheng HU, Shieh William

    Published 2022-07-01
    “…The deployment of emerging network infrastructure such as hyper-scale datacenters urgently requires ultra-high capacity but low-cost short-reach optical interconnects.Conventional intensity modulation and direct detection possesses a simple receiver structure but can only recover the intensity information, which restrains the capability of further scaling up the system capacity.Standard coherent detection can deliver high-order modulation formats and achieve high-capacity transmission.Nevertheless, the coherent transceiver requiring expensive narrow-linewidth laser sources and computation-intensive digital signal processing precludes its wide applications in short-reach systems.The advanced direct-detection optical receivers aim to combine the advantages of both direct detection and coherent detection and bridge the gap between them.Therefore, the advanced optical receivers are mainly based on self-coherent detection.Advanced single-polarization, dual-polarization, and few-mode optical receiver architectures wereintroduced.The proposed advanced optical receivers can retrieve the optical field via direct detection without using the narrow-linewidth lasers, which enables the realization of ultra-high capability but low-cost short-reach optical interconnects.…”
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  11. 631

    Ultra-Wideband Indoor Channel Modelling Using Ray-Tracing Software for through-the-Wall Imaging Radar by Christophe Lièbe, Pierre Combeau, Alain Gaugue, Yannis Pousset, Lilian Aveneau, Rodolphe Vauzelle, Jean-Marc Ogier

    Published 2010-01-01
    “…The first part describes the evolution of a ray tracing simulator, originally designed for propagation of narrowband signals, and then for ultra-wideband signals. This simulator allows to obtain temporal channel response to a wide-band emitter (3 GHz to 10 GHz). …”
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    Shaking Table Array Tests of an Ultra-High-Voltage Cup-Type Transmission Tower-Line System by Fei Wang, Ke Du, Jingjiang Sun, Fuyun Huang, Zhenghui Xiong

    Published 2019-01-01
    “…Ultra-high-voltage (UHV) cup-type transmission towers supported with long-span transmission lines are unavoidably subjected to the coupling action between the towers and the transmission lines. …”
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    100 nm AlSb/InAs HEMT for Ultra-Low-Power Consumption, Low-Noise Applications by Cyrille Gardès, Sonia Bagumako, Ludovic Desplanque, Nicolas Wichmann, Sylvain Bollaert, François Danneville, Xavier Wallart, Yannick Roelens

    Published 2014-01-01
    “…This demonstrates the great ability of AlSb/InAs HEMT for high-frequency operation combined with low-noise performances in ultra-low-power regime.…”
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