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The magnitude and geographical distribution of natural sources and sinks of atmospheric CH4 in the biosphere are still poorly known. Estimates of the net contribution from northern wetlands have been lowered during recent years. According to current consen ...
A quantum-mechanical model for quantum well polaritons in semiconductor microcavities is presented. The real and imaginary parts of the polariton dispersion are obtained. They represent, respectively, the position and the linewidth of the luminescence peak ...
When a growth interruption is applied to the top interface of a nominally 3 monolayers (ML) thick InAs quantum well (QW), grown on an InP substrate, the InAs layer relaxes by formation of three-dimensional (3D) islands. The emission from the QW is split in ...
When a growth interruption is applied to the top interface of a nominally 3 monolayers (ML) thick InAs quantum well (QW), grown on an InP substrate, the InAs layer relaxes by formation of three-dimensional (3D) islands. The emission from the QW is split in ...
Studies of the electronic transitions of the n = 1 (1P1, 3P1 - 1S0) exciton in solid rare gases at different vols. can yield valuable information about intermol. potentials. A computer calcn. of the absorption and emission energies of solid Ne was performe ...
Test were undertaken with a Renault Express 1.4 litre converted to natural gas operation. The effect of cold starts at cold temperatures and vehicle weight on taile pipe emissions were investigated with petrol and natural gas operation over the FTP75 and 9 ...
The title of this paper, “Against the Odds - Switzerland and the Emergence of NGV’s”, written some time ago reflects an expectation based on test results and considerable market interest. Unfortunately at the time of writing Switzerland is still awaiting t ...
Tests were undertaken with a Renault Express 1.4 litre converted to natural gas operation. The effect of cold starts at cold temperatures and vehicle weight on tail pipe emissions were investigated with petrol and natural gas operation over the FTP75 and t ...
A new UV band system identified as emission from the theor. predicted but so far unobserved 2F state of NO trapped in an Ar matrix is reported. The energy of the v = 0 level is estd. to be 6.57 +- 0.015 or 6.785 +- 0.015 eV. The intensity distribution yiel ...
