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A Differential Study of the Oxygen Abundances in the Galactic Thin and Thick Disks

First results from a study into the abundance trends of oxygen in the Galactic thin and thick disks are presented. Oxygen abundances for 63nearby F and G dwarf stars, based on very high resolution spectra (R∼215 000) and high signal-to-noise (S/N>400) of the faint forbidden oxygen line at 6300Å, have been determined. Our findings can be summarized as follows: 1) at [Fe/H]<0 the oxygen trends in th

CFD Investigation of Swirl-stabilized Flexi-fuel Burner Using Methane-air Mixture for Gas Turbines

Combustion modeling based on a multi-step global reaction mechanism [1] is applied to CFD (Computational Fluid Dynamics) analysis of a scaled swirl-stabilized 4th generation premixed DLE (Dry Low Emission) burner for gas turbines. The flexi-fuel burner consists of a MAIN premixed flame, a premixed PILOT flame and a confined RPL (Rich Pilot Lean) flame. Both steady-state RANS (Reynolds Averaged Nav

Towards a theory of lexical meaning as ontologies and construals

The purpose of this paper is to propose a framework of lexical meaning, broadly along the lines of Cognitive Semantics (Langacker 1987a). The paper focuses on interpretations of adjective-noun (ADJ N ) combinations in English. Within the proposed model, all aspects of meaning are to be explained in terms of properties of ontologies in conceptual space, i.e. properties of content ontologies and sch

Testing L2 Vocabulary: current test formats in English as a L2 used at Swedish universities

Recent literature on L2 vocabulary testing points to a move away from discrete vocabulary testing towards more embedded and integrative approaches. This paper investigates if the way vocabulary is currently tested at English departments at Swedish universities follows this trend. The survey shows that a great majority of universities use discrete and selective vocabulary tests and that the multipl

Socio-economic determinants for alcohol consumption and heavy episodic drinking in a Ugandan student population

Aims: To examine whether the socio-economic determinants of alcohol use found in high-income university student settings are also true of Uganda. Design: Two cross-sectional surveys, conducted in 2005 and 2010, combined into a single dataset. Setting: Mbarara University of Science and Technology (MUST) in southwestern Uganda. Participants: 2,934 students (N in 2005 = 980; N in 2010 = 1,954). To

Bacteriochlorophyll in Electric Field.

The spectroscopic properties of a molecule is strongly dependent on interactions with the surrounding environment. We have used time dependent density functional theory (TDDFT) and a multilevel perturbation model to study the transition energies, polarizability, and dipole moments of a bacteriochlorophyll in an electric field. The perturbation Hamiltonian was constructed as to give an electric fie