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Article

1,059 Views

11 Pages

Efficiency Testing of Pelton Turbines with Artificial Defects—Part 2: Needles and Seat Rings

Florian Fahrni,
Thomas Staubli and
Ernesto Casartelli

Energies2025, 18(11), 2725;https://doi.org/10.3390/en18112725

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23 May 2025

The erosion of Pelton turbine components in mountainous areas with high sediment input is a major challenge for energy- and cost-efficient operation. Quantitative data on possible efficiency losses associated with local damage are needed. A systemati...

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3,921 Views

26 Pages

The Origin of Synchysite-(Ce) and Sources of Rare Earth Elements in the Rožná Uranium Deposit, Czech Republic

Bohdan Kříbek,
Ilja Knésl,
Petr Dobeš,
František Veselovský,
Přemysl Pořádek,
Radek Škoda,
Renata Čopjaková,
Jaromír Leichmann and
Filip Košek

Minerals2022, 12(6), 690;https://doi.org/10.3390/min12060690

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29 May 2022

Synchysite was identified in the Rožná uranium deposit in a quartz–carbonate–sulfide vein, which is a part of the late (post-uranium and, post-Variscan) stage of the development of the hydrothermal system. The synchysite forms needles or lamellae, wh...

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