Southern great plains 1997 hydrological experiment: vegetation sampling and data documentation

"Prepared for the United States Department of Agriculture, Agricultural Research Service"--Cover

Phrase Frames in English Pharmaceutical Discourse: A Corpus-Driven Study of Intradisciplinary Register Variation

Focusing on the exploration of intra-disciplinary register variation in the pharmaceutical domain, this corpus-driven study attempts to describe the use, composition and discourse functions of phrase frames, that is, contiguous sequences of words identical except for one (Fletcher, 2002-2007), found in samples of four English pharmaceutical text types, such as patient information leaflets, summaries of product characteristics, clinical trial protocols and chapters/sections from academic textbooks on pharmacology. The study deals with a specific sub-type of phrase frames, that is, 4-word units with a variable slot in the medial position, e.g. be * with caution, to take * medicine. The results showed, among others, that the use and discourse functions of phrase frames vary across pharmaceutical text types, that the correlation between the frequency of phrase frames and their pattern variability may depend on a register or genre, and that it is justified to treat the discourse functions of phrase frames as distinct from those of their textual variants

2016 Research & Innovation Day Program

A one day showcase of applied research, social innovation, scholarship projects and activities.https://first.fanshawec.ca/cri_cripublications/1003/thumbnail.jp

The extraction of negative carbon ions from a volume cusp ion source

Acetylene and carbon dioxide gases are used in a filament-powered volume-cusp ion source to produce negative carbon ions for the purpose of carbon implantation for gettering applications. The beam was extracted to an energy of 25 keV and the composition was analyzed with a spectrometer system consisting of a 90° dipole magnet and a pair of slits. It is found that acetylene produces mostly C−2 ions (up to 92 µA), while carbon dioxide produces mostly O− with only trace amounts of C−. Maximum C−2 current was achieved with 400 W of arc power and, the beam current and composition were found to be highly dependent on the pressure in the source. The beam properties as a function of source settings are analyzed, and plasma properties are measured with a Langmuir probe. Finally, we describe testing of a new RF H− ion source, found to produce more than 6 mA of CW H− beam.peerReviewe

The extraction of negative carbon ions from a volume cusp ion source

Acetylene and carbon dioxide gases are used in a filament-powered volume-cusp ion source to produce negative carbon ions for the purpose of carbon implantation for gettering applications. The beam was extracted to an energy of 25 keV and the composition was analyzed with a spectrometer system consisting of a 90° dipole magnet and a pair of slits. It is found that acetylene produces mostly C−2 ions (up to 92 µA), while carbon dioxide produces mostly O− with only trace amounts of C−. Maximum C−2 current was achieved with 400 W of arc power and, the beam current and composition were found to be highly dependent on the pressure in the source. The beam properties as a function of source settings are analyzed, and plasma properties are measured with a Langmuir probe. Finally, we describe testing of a new RF H− ion source, found to produce more than 6 mA of CW H− beam.peerReviewe