Results 91 to 100 of about 381,962 (304)
Les systèmes d’appréciation de la valeur énergétique des aliments pour le porc
INRAE Productions Animales, 1993 Pour un même aliment, il peut être attribué différentes valeurs énergétiques selon l’étape de l’utilisation de l’énergie qui est considérée (énergie digestible : ED, énergie métabolisable : EM ou énergie nette : EN) et selon le mode de prédiction au ...
J. NOBLET
doaj +1 more source
Valuing fuel diversification in optimal investment policies for electricity generation portfolios [PDF]
Optimal capacity allocation for investments in electricity generation assets can be deterministically derived by comparing technology specific long-term and short-term marginal costs.
Christoph Weber, Malte Sunderkoetter
core
k‐Selective Electrical‐to‐Magnon Transduction with Finite‐Element‐Resolved Sub‐Micron Nanoantennas
Advanced Physics Research, EarlyView.We introduce a coupled finite‐element‐finite‐difference framework that links impedance‐matched nanoantenna geometries to propagating spin‐wave dynamics, capturing skin effects, proximity effects, and taper leakage beyond uniform‐current models. Applied to coplanar‐waveguide and stripline nanoantennas on yttrium‐iron‐garnet, the simulations achieve ...
Andreas Höfinger +11 more
wiley +1 more source
Rola odnawialnych źródeł energii w Krajowym Systemie Elektroenergetycznym
Prace Komisji Geografii Przemysłu Polskiego Towarzystwa Geograficznego, 2015 Udział odnawialnych źródeł energii (OZE) w Krajowym Systemie Elektroenergetycznym (KSE) od kilku lat systematycznie wzrasta. W Polsce energia ze źródeł odnawialnych obejmuje energie: promieniowania słonecznego, wiatru, wody, zasobów geotermalnych oraz ...
Mateusz Ćwikła
doaj +1 more source
Efficiency versus Robustness of Markets - Why improving market efficiency should not be the only objective of market regulation [PDF]
The efficiency of capital markets has been questioned almost as long as the efficient market hypothesis had been worked out. Numerous critics have been formulated against this hypothesis, questioning notably the behavioural assumptions underlying the ...
Christoph Weber
core
Ultra‐High‐Efficiency On‐Chip CO2 Conversion by Nanosecond Self‐Pulsing Micro‐Plasma Devices
Carbon Energy, EarlyView.A micro‐plasma chip with sub‐10‐μm electrode gaps is introduced for efficient CO2‐to‐CO conversion. The device self‐converts a DC power supply into nanosecond pulses, producing field‐emission electrons that vibrationally excite CO2, driving dissociation via the ladder‐climbing mechanism. A scaled‐up chip array achieves 30% single‐pass conversion and 50%
Guangyu Sun +5 more
wiley +1 more source
Decentralized energy supply and electricity market structures [PDF]
Small decentralized power generation units (DG) are politically promoted because of their potential to reduce GHG-emissions and the existing dependency on fossil fuels.
Christoph Weber, Philip Vogel
core
Journal of Physics: Conference Series, 2011 Dark energy models account for the present accelerated expansion of the universe. Many models were suggested and investigated, based on very different physical principles. We will review some representative models emphasizing similarities and differences between these various approaches.
openaire +2 more sources
Photochemistry of Aromatic N‐Oxides in Water Probed by Time‐Resolved X‐ray Absorption Spectroscopy
Chemistry – A European Journal, EarlyView.Time‐resolved XAS at the nitrogen and oxygen K‐edges is applied to the photorearrangement of two N‐oxides in water. Pyridine N‐oxide rapidly forms the oxaziridine isomer. Pyridazine N‐oxide undergoes ring opening to the diazo compound, without any evidence of intermediates.
Maximilian Paradiz Domínguez +3 more
wiley +1 more source
Scientific Reports, 2017 Recently, liquid phase crystallization of thin silicon films has emerged as a candidate for thin-film photovoltaics. On 10 μm thin absorbers, wafer-equivalent morphologies and open-circuit voltages were reached, leading to 13.2% record efficiency ...
David Eisenhauer +8 more
doaj +1 more source