Showing 821 - 840 results of 1,101 for search '"microwave"', query time: 0.05s Refine Results
  1. 821

    Direct Growth of High-Quality InP Layers on GaAs Substrates by MOCVD by K. F. Yarn, W. C. Chien, C. L. Lin, C. I. Liao

    Published 2003-01-01
    “…Finally, to investigate the performance of the metamorphic microwave devices, we also fabricate the InAlAs/InGaAs metamorphic HEMT on GaAs substrates.…”
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    Article
  2. 822

    Synthesis and Use of Environmentally Friendly Superabsorbent Smart Polymer to Improve the Properties of the Gypsum Soil by Foud Nihad Abed, Mustafa Mahdi Abdulridha, A. A. Hamad Mohamad, Zelalem Meraf, Mohamed Abdelhedi

    Published 2022-01-01
    “…It was polymerization on the microwave rays at a medium capacity and for 25 minutes, where the yellow gel was obtained. …”
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  3. 823

    Evaluation and Optimization of Downstream Process Parameters for Extraction of Betulinic Acid from the Bark of Ziziphus jujubae L. by Kashyap Kumar Dubey, Nitika Goel

    Published 2013-01-01
    “…Various extraction methods like stirring extraction, soxhlet extraction, ultrasonic extraction, and microwave assisted extraction (MAE) were evaluated for increasing recovery percentage of BA. …”
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  4. 824

    A Straightforward and High-Yielding Synthesis of 1,2,4-Oxadiazoles from Chiral N-Protected α-Amino Acids and Amidoximes in Acetone-Water: An Eco-Friendly Approach by André C. Sauer, Lucas Wolf, Natália Quoos, Mariele B. Rodrigues, Antônio L. Braga, Oscar E. D. Rodrigues, Luciano Dornelles

    Published 2019-01-01
    “…A straightforward and high-yielding methodology for the synthesis of a high structural diversity of 1,2,4-oxadiazoles from different chiral N-protected α-amino acids and amidoximes under microwave (MW) irradiation is described herein. This greener approach gives the desired products using acetone/water as solvent in very short reaction times.…”
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  5. 825

    Improved Delay-and-Sum Beamforming Algorithm for Breast Cancer Detection by M. Klemm, I. J. Craddock, J. A. Leendertz, A. Preece, R. Benjamin

    Published 2008-01-01
    “…We have evaluated a modified delay-and-sum (DAS) beamforming algorithm for breast cancer detection with a microwave radar-based system. The improved DAS algorithm uses an additional weight factor calculated at each focal point to improve image quality. …”
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  6. 826

    Astronomical Signatures of Dark Matter by Paul Gorenstein, Wallace Tucker

    Published 2014-01-01
    “…The level of gravitational attraction needed for the spatial distribution of galaxies to evolve from the small perturbations implied by the very slightly anisotropic cosmic microwave background radiation to its current web-like configuration requires much more mass than is observed across the entire electromagnetic spectrum. …”
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  7. 827

    Development of a Compact Wide-Slot Antenna for Early Stage Breast Cancer Detection Featuring Circular Array Full-View Geometry by S. S. Tiang, M. S. Hathal, N. S. Nik Anwar, M. F. Ain, M. Z. Abdullah

    Published 2014-01-01
    “…A novel planar type antenna printed on a high permittivity Rogers’ substrate is proposed for early stage microwave breast cancer detection. The design is based on a p-shaped wide-slot structure with 50 Ω microstrip feeding circuit to eliminate losses of transmission. …”
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    Article
  8. 828

    Absorption loss and Kerr nonlinearity in barium titanate waveguides by Annina Riedhauser, Charles Möhl, Johannes Schading, Daniele Caimi, David I. Indolese, Thomas M. Karg, Paul Seidler

    Published 2025-01-01
    “…Because of its exceptionally large Pockels coefficient, barium titanate (BaTiO3) is a promising material for various photonic applications at both room and cryogenic temperatures, including electro-optic modulation, frequency comb generation, and microwave-optical transduction. These applications rely on devices with low optical loss to achieve high efficiency. …”
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    Article
  9. 829

    Design of a Printed Dipole Antenna Array for a Passive Radar System by Peter Knott

    Published 2013-01-01
    “…Several prototypes have been fabricated on conventional microwave PCB substrate material. Preliminary measurement results for antenna matching and far-field radiation patterns are shown.…”
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  10. 830

    Determination and Analysis of Trace Elements in Five Kinds of Traditional Chinese Medicine in High Blood Pressure Medicinal Food by ICP-AES by Li Yang, Qinghua Yan, Huixuan Zhang, Jianwei Zhang

    Published 2020-01-01
    “…The samples were digested using a microwave digestion instrument through NHO3-H2O2 solution, and then, the elements were synthesized by inductively coupled plasma atomic emission spectrometry (ICP-AES). …”
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  11. 831

    Constraints of Anisotropy on Warm Power-Law Ination in Light of Planck Results by Zahra Ghadiry, Ali Aghamohammadi, Abdollah Refaei

    Published 2021-03-01
    “…Then we calculate the slow-roll parameters and observational indexes in both regimes and finally, we show that this model has been able to make a good agreement by comparing the theoretical results and observational data obtained from cosmic microwave background and Planck satellites 2013 and 2015…”
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  12. 832
  13. 833

    Quinazoline scaffold as a target for combating microbial resistance: Synthesis and antimicrobial profiling of quinazoline derivatives by Vishwanath Halappanavar, Sangappa Teli, Hanamant B. Sannakki, Dharyappa Teli

    Published 2025-01-01
    “…Synthetic methods include transition metal-mediated reactions, microwave-assisted techniques, and Aza reactions. The review critically evaluates the efficacy of quinazoline derivatives against drug-resistant pathogens and explores avenues for developing quinazoline-based antimicrobials. …”
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  14. 834

    Exhibition of Dielectric Property Based on Soil Class and Moisture Presence for Bengaluru District by Sujit Kumar, N. Ahalya, Vikash Singh, Pravin P. Patil, A. V. Raghavendra Rao, A. Nirmala Jyothsna, P. Abhilash, Rupesh kushwah, Sojan Palukaran Thimothy

    Published 2022-01-01
    “…This research examined the dielectric characteristics of soils by utilizing four types of soil (clay-loam, loam, clay, and Frank) in a vector network analyzer (VNA) in the 600–8000 MHz microwave frequency range at ambient temperature (25°C ± 3°C). …”
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  15. 835

    Propagation Model in Indoor and Outdoor for the LTE Communications by Sun-Kuk Noh, DongYou Choi

    Published 2019-01-01
    “…Previous studies on the development of propagation models considering a propagation environment in the existing microwave band have been mainly focused on analyzing the propagation characteristics with regard to large-scale factors such as path losses, delay propagation, and angle diffusions. …”
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  16. 836

    A Low-Sidelobe-Level Variable Inclination Continuous Transverse Stub Antenna with a Nonlinear Slow-Wave Structure by Kexin Wang, Xue Lei, Jun Gao, Tianpeng Li, Siyu Tian, Mingyang Zhao

    Published 2021-01-01
    “…To verify the effectiveness of this method, the antenna prototype is fabricated and measured in a microwave anechoic chamber. The simulation and the measurement are in good agreement. …”
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  17. 837

    Synthesis and Photocatalytic Properties of One-Dimensional Composite - Nanowires by Qianqian Zhang, Baibiao Huang, Peng Wang, Xiaoyang Zhang, Xiaoyan Qin, zeyan wang

    Published 2012-01-01
    “…One-dimensional composite - nanowires were successfully fabricated by a simple microwave-assistant hydrothermal method. The successful fabrication of one-dimensional - nanowires can only be realized at pH value range of 1–5 of the starting solution. …”
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  18. 838

    Controlling Conical Beam Carrying Orbital Angular Momentum with Transmissive Metasurface by Jun Sun, Ke Chen, Kai Qu, Junming Zhao, Tian Jiang, Yijun Feng

    Published 2021-01-01
    “…Experiments are conducted in the microwave region to validate the design method, which shows good agreement with the simulation results. …”
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  19. 839

    Dual-Band High Q-Factor Complementary Split-Ring Resonators Using Substrate Integrated Waveguide Method and Their Applications by Mehdi Hamidkhani, Rasool Sadeghi, Mohamadreza Karimi

    Published 2019-01-01
    “…In modern microwave telecommunication systems, especially in low phase noise oscillators, there is a need for resonators with low insertion losses and high Q-factor. …”
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  20. 840

    Collider and CMB complementarity of leptophilic dark matter with light Dirac neutrinos by Debasish Borah, Nayan Das, Sahabub Jahedi, Bhavya Thacker

    Published 2025-01-01
    “…The right chiral parts of light Dirac neutrinos get thermalised due to their interactions with the bath as well as leptophilic DM, leading to enhanced effective relativistic degrees of freedom N eff within reach of future cosmic microwave background (CMB) experiments. The interplay of existing bounds from cosmological observations related to DM relic and N eff, direct and indirect detection of DM, astrophysics, and collider observations leave promising discovery prospects at future electron and muon colliders along with complementary signatures at future CMB experiments.…”
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