Results 1 to 10 of about 58,985 (162)
Energies, 2022 This contribution presents a novel methodology to evaluate the lifetime extension potential of wind turbines—taking towers as the key component that preserves onshore turbines’ structural integrity—as a consequence of the difference between design and ...
Nicola Grieve +2 more
doaj +3 more sources
Lifetime Extension of Ultra Low-Altitude Lunar Spacecraft with Low-Thrust Propulsion System
Aerospace, 2022 Due to the non-spherical perturbation of the Moon, the lifetime of ultra low-altitude Lunar spacecraft may be quite short. In this paper, we analyze the lifetime of about 50 km-altitude Lunar spacecraft with different initial orbit.
Jingxi Liu +3 more
doaj +3 more sources
Applied Sciences, 2023 In this study, the multi-criteria decision-making (MCDM) technique is used in collaboration with K-medoids clustering to establish a novel algorithm for extending the lifetime of wireless sensor networks (WSNs) in the presence of uncertainty.
Supriyan Sen +4 more
doaj +3 more sources
A Power-Optimized Cooperative MAC Protocol for Lifetime Extension in Wireless Sensor Networks [PDF]
Sensors, 2016 In wireless sensor networks, in order to satisfy the requirement of long working time of energy-limited nodes, we need to design an energy-efficient and lifetime-extended medium access control (MAC) protocol.
Kai Liu +4 more
doaj +2 more sources
Substantial Extension of the Lifetime of the Terrestrial Biosphere
The Planetary Science JournalApproximately one billion years (Gyr) in the future, as the Sun brightens, Earth’s carbonate-silicate cycle is expected to drive CO _2 below the minimum level required by vascular land plants, eliminating most macroscopic land life.
R. J. Graham, Itay Halevy, Dorian Abbot
doaj +3 more sources
On Lifetime Extension of Wind Turbine Drivetrains [PDF]
Volume 9: Ocean Renewable Energy, 2021 Abstract The focused shift to reduce carbon emissions by substituting fossil fuels with renewable energy sources, including wind, is increasing. This means that more and more wind turbines are being installed, both onshore and offshore and as this number increases, more and more turbines are reaching their end of designed service life ...
Tartt, Kelly +3 more
openaire +3 more sources
An Overview of Lifetime Management of Power Electronic Converters
IEEE Access, 2022 An expected lifetime of converters is of great importance for optimal decision-making in the planning of modern Power Electronic (PE) systems. Hence, the lifetime management of power electronic systems has attracted a lot of attention in academia and ...
Saeed Rahimpour +5 more
doaj +1 more source
Vibrational Stresses of Damaged Steam Turbine Blades After Renovation Repair [PDF]
Journal of Mechanical Engineering, 2021 The last-stage blades of K-1000-60/3000 steam turbines operate in a humid steam environment, which causes erosion damage in the blades and reduction in their residual life.
Mykola H. Shulzhenko +1 more
doaj +1 more source
Global Review of International Nuclear Waste Management
Energies, 2023 In the current situation of global energy transition, nuclear energy maintains its reputation as a stable power generation technology, without dependence on other resources and without CO2 emissions.
Pablo Fernández-Arias +2 more
doaj +1 more source
Energies, 2022 Regulations from the European Union move towards a constant reduction of pollutant emissions to match the single-digit goal by 2050. Original equipment manufacturers propose newly designed components for the lifetime extension ofgGas turbines that both ...
Lorenzo Laveneziana +7 more
doaj +1 more source