Flotation Recovery of Sphalerite in Sea Water: A Feasibility Study by Alexander A. Nikolaev

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The Physical Characterization and Terminal Velocities of Aluminium, Iron and Plastic Bottle Caps in a Water Environment by Alexander A. Nikolaev

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Comparative Analysis of Current and Voltage THD at Different Grid Powers for Powerful Active Front-End Rectifiers with Preprogrammed PWM by Alexander S. Maklakov, Tao Jing, Alexander A. Nikolaev

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Grid Connection Circuits for Powerful Regenerative Electric Drives of Rolling Mills: Review by Alexander S. Maklakov, Tao Jing, Alexander A. Nikolaev, Vadim R. Gasiyarov

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Long-period changes of the air temperature in Tatarstan and their forecast till the end of the 21st century by Yuri P. Perevedentsev, Konstantin M. Shantalinskii, Boris G. Sherstukov, Alexander A. Nikolaev

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Air Temperature Change at the End of the Late Holocene and in the Anthropocene in the Middle Volga Region, European Russia by Yuri P. Perevedentsev, Konstantin M. Shantalinsky, Artyom V. Gusarov, Nadezhda A. Mirsaeva, Timur R. Aukhadeev, Alexander A. Nikolaev

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The impact of asymptomatic and mild COVID-19 on sperm characteristics by Dmitry L. Lutsky, Ramil M. Mahmudov, Adela M. Lutskaya, Sergey V. Vybornov, Alexander A. Nikolaev, Evgeniy S. Kalashnikov, Dina M. Nikulina, Vladimir V. Lozovskii, Vladimir Vl. Lozovskiy, Luiza M. Shishkina

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