In this work, we present the spectroscopic properties ofLiYF4(YLF) single crystals activated by high doping of erbium ions. The most important processes that lead to the up-conversion erbium emissions in the infrared region were identified. A time-resolved luminescence spectroscopy technique was empl...
Energy transferin the form of work or heat is taking place in time, at a finite rate, and cannot be instantaneous. The energy transfer per unit of time, or energy rate, is called power, usually in form of the work rate, although it may also be heating power, that is, ...
This work unveils the energy transfer physics of imbalanced Alfvénic turbulence, and advances the understanding of imbalanced Alfvénic turbulence observed by Parker Solar Probe in the inner heliosphere.Similar content being viewed by others Identification of the weak-to-strong transition in Alfvénic ...
Selenium substitution for dielectric constant improvement and hole-transfer acceleration in non-fullerene organic solar cells Dielectric constant of non-fullerene acceptors plays a critical role in organic solar cells in terms of exciton dissociation and charge recombination. Here, authors report selenium su...
AnikoToth,ElemerBobok, inFlow and Heat Transfer in Geothermal Systems, 2017 11.3Steam Turbines Theenergy conversionfrom heat to work is realized in a power cycle as the high-enthalpy steam expands flowing through thesteam turbine. A steam turbine is a device that extractsthermal energyfrom the ste...
aa friend indeed is a friend in need 朋友的确是一个朋友在需要[translate] awork is the transfer of energy expressed as the product of a force and the distance through which its point of application moves in the direction of the force 正在翻译,请等待...[translate]...
Such high electrocatalytic per-formance arises due to the synergistic effect between the MoS2 and CoS phases across the interface, the abundant active sites, as well as the hierarchical pore framework, which collectively enhance the mass and electron transfer during the reactions. The work ...
Oxygen evolution is a key reaction in electrolysers and involves a spin-dependent, multi-electron transfer process. Here the authors use topological semimetals with intrinsic chirality as a means to control spin in oxygen evolution catalysts, and explore the role of spin–orbit coupling in determini...
Inelastic collisions involving molecular species are key to energy transfer in gaseous environments. They are commonly governed by an energy gap law, which dictates that transitions are dominated by those between initial and final states with roughly the
Market efficiency: Derivatives can enhance market efficiency by allowing for the transfer of risk from those less willing or able to bear it to those more willing or able. This transfer of risk can improve how capital is allocated in the economy.7 ...