We investigate sensitization efficiency of near-infrared emission and population saturation of trivalent erbium in erbium-quinolinolato complexes photoexcited into the absorption band of the organic sensitizer. At low-excitation levels, we find high (∼80%) sensitization efficiencies. We observe excited-state population saturation at inversion threshold under subnanosecondpumping at the level of...

Using combined excitation–emission spectroscopy we have studied the erbium incorporation into GaN and InGaN for in situ doped MOCVD-grown layers and compared them to samples grown by MBE. A smaller up-conversion efficiency for the main site is observed compared to minority sites in the same sample as well as versus all sites from MBE grown samples. Furthermore, we show that the 1.54 lm emission...

P roductivity promotion has received a key attention in contemporary macroeconomic analysis. Productivity of labor driven, in particular, by human capital (i.e. health and education), is seen vitally more important. Labor qualities in terms of health and education (treated as flow and stock variables), have a bearing on labor productivity. The main objective of this paper is to ident...

As in other markets with experts, healthcare markets are characterized by asymmetric information. Providers may use this information advantage to increase profits. I conduct an audit study to test whether improved customer information about healthcare purchases improves customer well-being through reducing prices and improving quality. I send pairs of covert shoppers to medical outlets in Ugand...

An apurinic or apyrimidinic site (AP site) has known to be one of the typical DNA lesions induced by ionizing irradiation to cells. A clustered DNA damage site composed of AP sites (AP clusters) can be visualized as a double-strand break (DSB) by a treatment of DNA sample with endonuclease IV proteins as an enzymatic probe. AP clusters are efficiently induced in human cells by low LET γand X-ir...

In this document we describe the scheme used for labelling the open-source Ukwabelana Zulu corpus as well as the rules employed for the Part-of-speech (POS) tagger used to assign POS to morphologically analysed words. A detailed description of the Zulu morphology, the corpus itself and its generation is given in [2]. All resources can be downloaded from http://www.cs.bris.ac.uk/Research/Machine...