36 research outputs found
Assessing students' experiences of teaching-learning environments and approaches to learning.:Validation of a questionnaire used in different countries and varying contexts.
Get PDFOptical amplification and stability of spiroquaterphenyl compounds and blends
Get PDFIn this contribution, we present a systematic investigation on a series of spiroquaterphenyl compounds optimised for solid state lasing in the near ultraviolet (UV). Amplified spontaneous emission (ASE) thresholds in the order of 1 ΌJ/cm^2 are obtained in neat (undiluted) films and blends, with emission peaks at 390±1 nm for unsubstituted and meta-substituted quaterphenyls and 400±4 nm for para-ether substituted quaterphenyls. Mixing with a transparent matrix retains a low threshold, shifts the emission to lower wavelengths and allows a better access to modes having their intensity maximum deeper in the film. Chemical design and blending allow an independent tuning of optical and processing properties such as the glass transition
Kleine vis in een kleine dwergvinvis. Toeval of trend? : Maag- en darminhoud van de jonge dwergvinvis die aanspoelde op Texel op 8 juli 2019
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Optical amplification and stability of spiroquaterphenyl compounds and blends
No full textGefördert durch den Publikationsfonds der UniversitÀt Kasse
Nephrogenous cyclic AMP and plasma parathyroid hormone in hypercalcaemia: the influence of renal function
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