Nicholas Kaufmann Livres

Gabriel Hunt finds adventure everywhere he goes. Three jewels, lost for centuries and scattered across the globe, hold the secret to a device of unspeakable power, and only Gabriel Hunt can prevent them from falling into the hands of an ancient Hittite cult - or of a rival bent on world domination...

Deadly creatures are preying on the people of Valley Grove, killing them with a toxic venom that ravages and transforms their bodies in horrifying ways. As the creatures claim more victims, Laura must find a way to stop them or die trying.

"1983. The US nuclear submarine USS Roanoke embarks on a classified spy mission into Soviet waters. Their goal: to find evidence of a new, faster, and deadlier Soviet submarine that could tip the balance of the Cold War. But the Roanoke crew isn't alone. Something is on board with them--something cunning and malevolent"--Publisher marketing.

Medical Examiner Laura Powell and her scientist ex Booker Coates must find a way to stop a deadly, mind-altering infection attacking the town of Sakima in this first book of a new series.

Set in a dark and mysterious world, this tale explores the life of a seductive and enigmatic vampire who navigates the complexities of love, betrayal, and immortality. The narrative delves into the psychological struggles of its characters, revealing their desires and fears while intertwining themes of power and the supernatural. As they confront their own natures and the consequences of their actions, the story unfolds with rich imagery and a haunting atmosphere, captivating readers with its blend of romance and horror.

This poetry collection explores the journey of confronting and healing from trauma, weaving together personal narratives and emotional resilience. Through evocative language and imagery, the poems reflect on pain, recovery, and the transformative power of self-discovery. Each piece invites readers to connect with their own experiences of struggle and growth, ultimately celebrating the strength found in vulnerability.

This thesis deals with small horizontal axis free-flow turbines for harnessing the kinetic energy of marine currents driven by the tidal cycle. The overall objective of this work is the development of innovative optimal rotor geometries for these small horizontal axis turbines which feature a) the maximum annual energy production at a given site of deployment, b) a minimum axial thrust in order to reduce cost for foundation at the seabed or for mooring of a floating platform, and c) a minimum sensitivity to cavitation for a low immersion depth in case of floating platform systems. Within this thesis, a novel turbine design method, tailor-made for small horizontal axis turbines, is developed. Key feature is the integration of an enhanced semi-analytic blade-element-momentum method and a cavitation inception model into a multi-objective optimization scheme. Control strategies for fixed- und variable-pitch turbines are included. For four generic classes of tidal current velocity distributions, representing potential tidal current resources of different energy levels, fixed- und variable-pitch turbines are designed. The predicted annual energy production of the optimized fixed-pitch turbine is between 22% and 27% above a classical design. The optimized variable-pitch versions promise even larger improvements. The new design method has been validated successfully within comprehensive model scale turbine tests in a towing tank and cavitation tunnel. Moreover, in several months' full-scale tests in a real tidal current, the predicted power and thrust characteristics of a selected close-to-production turbine was confirmed.