Articles you may be interested in Femtosecond Raman spectra of cis-stilbene and trans-stilbene with isotopomers in solution Viscosity dependence and solvent effects in the photoisomerization of cis-stilbene: Insight from a molecular dynamics study with an ab initio potential-energy function Absorption and emission spectra are calculated by modeling cis-stilbene as a system of 12 displaced harmo...

Today several instruments exist to decrease air pollution. The paper discusses pollution taxes, emission trading permits and green certificates applied to reduce the CO2-emissions in the electricity sector. It then investigates how the different mechanisms behind these three instruments can possibly be combined. The proposed approach is to introduce the concept of zero-emission certificates (ZE...

The Paris Climate Agreement seeks to keep global temperature increases under 2° Celsius, ideally 1.5° Celsius. This goal necessitates significant emission reductions. By 2030, emissions are expected range between 52 and 58 GtCO2e from their 2016 level of approximately GtCO2e. review paper explores a number low zero-carbon renewable fuels, such as hydrogen, green ammonia, methanol, biomethane, n...

This paper studies different IGCC systems with CO2 recovery. In order to effectively reduce CO2 emissions from the IGCC system, several kinds of IGCC systems with quasizero CO2 emissions have been studied in this paper. The key parameters affecting the IGCC systems’ performance have been analyzed and compared. The systems’ performances have been investigated based on comparison of different IGC...

We present a novel approach to enhance light emission in Si and demonstrate a sub-bandgap light emitting diode based on the introduction of point defects that enhance the radiative recombination rate. Ion implantation, pulsed laser melting and rapid thermal annealing were used to create a diode containing a self-interstitial-rich optically active region from which the zero-phonon emission line ...

We demonstrate coupling between the zero phonon line (ZPL) of nitrogen-vacancy centers in diamond and the modes of optical micro-resonators fabricated in single crystal diamond membranes sitting on a silicon dioxide substrate. A more than ten-fold enhancement of the ZPL is estimated by measuring the modification of the spontaneous emission lifetime. The cavity-coupled ZPL emission was further c...

We report on the discovery of a relativistic iron Kα fluorescent emission line in the BeppoSAX spectrum of the microquasar GRS 1915+105, taken on April 19, 1998, when the line was unusually intense. The feature is broad and skewed, clearly indicating emission from the innermost regions of the accretion disc. The inner emitting orbit is larger than the innermost stable orbit, even in Schwarzschi...

Evolving wildfire management policies are aimed at more comprehensive treatments of current wildland fire management problems. Key policies are identified that affect wildfire and fuels management. Policies are discussed in the context of institutional factors such as interagency cooperation and the growing number of regulations and laws. Key economic principles, such as the Coase Theorem, are ...

An emission at 281 nm with a 10.5 ns single exponential decay and a highly selective, narrow excitation region between 202 and 211 nm has been observed for Ce doped in Cs3LuCl6. Wavelengths between 50–200 nm and longer than 215 nm have zero excitation efficiency. Excitation and emission spectra of Cs3LuCl6 :Ce 31 in the 10–300 K temperature range were excited by pulsed synchrotron radiation bet...