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    Resposta do Desafio do Boletim 51 by Ilydio Pereira de Sá, Vinícius Gusmão Pereira de Sá

    Published 2008-01-01
    “… No número anterior do Boletim GEPEM propusemos o famoso “problema de Monty Hall”. Trata-se de um programa de auditório onde há três portas iguais, uma das quais escondendo um prêmio. …”
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  16. 816

    Phenomenological construction of metal photonic topological insulators based on theory of characteristic modes by Lili Dai, Jie Meng, Weiwen Li

    Published 2025-01-01
    “…Based on CMA, a spoof surface plasmon periodic structure is constructed to achieve electromagnetic TPTs with the photonic valley Hall effect. The CMA of metal photonic topological insulators essentially provides a novel phenomenological explanation for electromagnetic TPTs. …”
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  17. 817

    A Simple Method to Differentiate between Free-Carrier Recombination and Trapping Centers in the Bandgap of the p-Type Semiconductor by Megersa Wodajo Shura

    Published 2021-01-01
    “…Applying the Shockley–Read–Hall model to a p-type material under a low injection level, the expressions for the recombination rates, the trapping rates, and the excess carrier lifetimes (recombination and trapping) were described as functions of the localized state energies. …”
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  18. 818

    Topological electronic structure and transport properties of the distorted rutile-type WO2 by Yuto Muramatsu, Daigorou Hirai, Mitsuaki Kawamura, Susumu Minami, Yoshitaka Ikeda, Takahiro Shimada, Keita Kojima, Naoyuki Katayama, Koshi Takenaka

    Published 2025-01-01
    “…Electrical resistivity and Hall effect measurements of high-quality single crystals revealed the transport property characteristics of topological materials; these characteristics included an extremely large magnetoresistance of 13 200% (2 K and 9 T) and a very high carrier mobility of 25 700 cm2 V−1 s−1 (5 K). …”
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  19. 819

    ZnO:Al Grown by Sputtering from Two Different Target Sources: A Comparison Study by Abdalla A. Alnajjar

    Published 2012-01-01
    “…Further, the sheet resistance, resistivity, carrier concentration, and Hall mobility of these ZnO:Al thin films were measured as a function of film thickness. …”
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  20. 820

    Second Screen Engagement of Event Spectators by Tomas Cerny, Michael Jeff Donahoo

    Published 2018-01-01
    “…We propose a second screen application, providing each audience member a personalized perspective, involving mobile devices equipped with Wi-Fi, and spanning to venue screens in hotels, halls, arenas, elevators, etc. Such a system engages both local audience and remote spectators. …”
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