1,175 research outputs found
Spectrophotometery of Brackett lines in very luminous IRAS galaxies
Observation of the Brackett-alpha and Brackett-gamma hydrogen recombination lines were made in a sample of galaxies chosen from the IRAS catalog to have high luminosities at infrared wavelengths. Most have strong Brackett line emission indicating large numbers of high mass stars; the formation of these stars may hence be the underlying source for the galaxies' luminosities. However, there are at least two exceptions that may not be explained in this manner: NGC 6240 and Arp 220. Additional evidence indicates that each of these exceptions may be more closely related to Seyfert-type galaxies or other active galactic nuclei
Luminosity Function of the Perigalactocentric Region
We present H and K photometry of 42,000 stars in an area of 250 arcmin
centered on the Galactic center. We use the photometry to construct a
dereddened K band luminosity function (LF) for this region, excluding the
excessively crowded inner 2' of the Galaxy. This LF is intermediate between the
LF of Baade's window and the LF of inner 2' of the Galactic center. We
speculate that the bright stars in this region have an age which is
intermediate between the starburst population in the Galactic center and the
old bulge population. We present the coordinates and mags for 16 stars with
K_{0} < 5 for spectroscopic follow up.Comment: 25 pages. Tarred, gzipped and uuencoded. Includes LaTex source file,
Figures 3 to 9 and 5 Tables. Figures 1 and 2 are available at
ftp://bessel.mps.ohio-state.edu/pub/vijay . Submitted to Ap
College of Natural Sciences, Forestry, and Agriculture_SWK 497 Mental Health and Work Session Slides
Presentation slides from Elizabeth Depoy, Professor of Social Work, School of Social Work, University of Maine for the first and fourth sessions of her Class SWK 497 Mental Health and Work. Also, includes cover email of slide sent to Jonathon Jue-Wong, Administrative Coordinator, The Office of the Executive Vice President for Academic Affairs & Provost on June 1, 2020
Community-based occupational therapy with a head-injured adult.
In the early 1970s, the National Head Injury Foundation identified 422,000 adults with permanent brain damage caused by traumatic head injury. It is estimated that 400,000 new cases of varying severity are treated in hospitals each year, the majority of whom are previously employed young adult men. Although many persons with traumatic brain injuries are able to return to productivity, approximately 35% of the adults who have been rated as mildly head injured on the Glascow Coma Scale (Teasdale & Jennet, 1974) never return to work and have difficulty reentering society after restorative efforts are discontinued (Rosenthal, Griffith, Bond, & Miller, 1983). These persons often remain socially isolated and nonproductive and thus are likely to develop secondary occupational dysfunction. Adults with mild head injuries often report feeling incompetent, frustrated and struggle with a loss of control over their lives (Deutch and Sawyer, 1985). If they live at home, they frequently experience increased tension in the family; this tension can lead to the dissolution of the family unit and to the unnecessary institutionalization of the brain-damaged adult. The need for community-based intervention with a focus on culturally relevant occupational function is evident. This case report describes the progress of a mildly head-injured man who worked with an occupational therapist in a homebased program to improve occupational function
College of Natural Sciences, Forestry, and Agriculture_Interdisciplinary Disability Studies Assignment
Presentation slide from Elizabeth Depoy, Professor of Social Work, School of Social Work, University of Maine with the assignment for her Interdisciplinary Disability Studies class. Also, includes cover email of slide sent to Jonathon Jue-Wong, Administrative Coordinator, The Office of the Executive Vice President for Academic Affairs & Provost on June 1, 2020
Distribution, Diversity, and Biogeography of Anaerobic Carbon Monoxide Uptake by Microbial Communities in Soils and Sediments
Carbon monoxide (CO) is primarily known for being a toxic gas. However, CO is used by microorganisms as an electron or carbon source in a variety of respiratory processes. Different kinds of microorganisms utilize CO aerobically and anaerobically, using two distinct CO dehydrogenases (CODHs). Aerobes oxidize CO using a molybdenum-dependent dehydrogenase (Mo-CODH), while anaerobes utilize a nickel-dependent CO dehydrogenase (Ni-CODH). Studies of the biochemistry and microbiology of aerobic and anaerobic CO oxidation are extensive, but relatively little is known about the ecology of anaerobic CO oxidation. In an effort to test new hypotheses about the ecology of anaerobic CO oxidation, a series of studies was undertaken using diverse soils and sediments that provided novel insights about the activity and biogeography of the process, its temperature sensitivity, and the diversity of microbial communities that participate in anaerobic CO uptake. CO uptake assays used low (10 ppm) CO concentrations under aerobic and anaerobic conditions, and high (25%) CO concentrations under anaerobic conditions at 25 °C and 60 °C. Anaerobic CO uptake occurred across all sites with low CO concentrations, even in recent volcanic deposits. Anaerobic CO uptake at high concentrations exhibited more variability. However, anaerobic CO uptake occurred in mesothermal and psychrothermal sites as well as in hot spring systems, suggesting that this process occurs in a wider range of environments and across a broader temperature range than previously reported. Analyses of microbial communities based on 16S rRNA gene sequences reveal distinct responses to elevated temperature, but less of response to elevated CO concentrations. However, there were enriched taxa, including known and putative Ni-dependent CO oxidizers, suggesting that anaerobic CO oxidizers may be more diverse than previously imagined
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