Cooley D.R.,University of Massachusetts Amherst |
Mullins R.F.,University of Massachusetts Amherst |
Bradley P.M.,Worcester State College |
Wilce R.T.,University of Massachusetts Amherst
Phycologia | Year: 2011
The green marine alga Pseudendoclonium submarinum (Willie 1901) occurs on hard substratum in the upper littoral in the North Atlantic Ocean. In recent field and laboratory studies, Pseudendoclonium submarinum grew normally in situ but declined in vitro. Microscopic examination showed the alga inoculum to be associated with a filamentous fungus, where the fungus grew in close association with the alga. Pseudendoclonium samples collected from Ipswich, MA during a two-year period were consistently associated with the fungus. In cultures with the fungus present, algal thalli declined and became necrotic, while the fungus produced hyphae and conidia. The fungus failed to grow in sterile algal medium in the absence of Pseudendoclonium but could be isolated and grown on standard mycological culture media. Light and scanning electron microscopy showed fungal hyphae infiltrated intercellular areas of the algal filaments but did not penetrate algal cell walls. Pathogenicity is apparently a result of the in vitro environment, and it is hypothesized that the fungus produces one or more secondary metabolites, which accumulate in culture. These metabolites produced by the fungus eventually killed algal cells. Fungal ribosomal DNA sequences were compared to Cladosporium sp. in GenBank, indicating that the fungus is Cladosporium cladosporioides (Fresenius) de Vries. Widely distributed, Cladosporium cladosporioides has been shown to be a facultative parasite, endophyte and saprophyte on terrestrial plants and some algae. The fungus has not been described in association with an ulvophyte, a green marine alga.
Healy S.,Worcester State College
Professional Geographer | Year: 2010
In this article I recount the ways that key concepts in Lacanian psychoanalytic theory-the relationship between language and desire, fantasy and subject formation, ethics and the traversal of fantasy-have enabled a novel methodological approach to activist research. Psychoanalysis allows us to recast research as a process of encountering and traversing fantasies, which is simultaneously a process of engendering new representations, desires, subjectivities, and societies. © 2010 by Association of American Geographers.
Brisbois M.,Worcester State College
AAOHN journal : official journal of the American Association of Occupational Health Nurses | Year: 2010
The Whitehall II Study finds overtime work is related to increased risk of incident coronary heart disease independent of conventional risk factors. Copyright 2010, SLACK Incorporated.
Fu D.,CAS Beijing Institute of Geographic Sciences and Nature Resources Research |
Chen B.,CAS Beijing Institute of Geographic Sciences and Nature Resources Research |
Chen B.,University of British Columbia |
Zhang H.,CAS Beijing Institute of Geographic Sciences and Nature Resources Research |
And 11 more authors.
Remote Sensing of Environment | Year: 2014
More accurate estimation of the carbon dioxide flux depends on the improved scientific understanding of the terrestrial carbon cycle. Remote-sensing-based approaches to continental-scale estimation of net ecosystem exchange (NEE) have been developed but coarse spatial resolution is a source of errors. Here we demonstrate a satellite-based method of estimating NEE using Landsat TM/ETM+data and an upscaling framework. The upscaling framework contains flux-footprint climatology modeling, modified regression tree (MRT) analysis and image fusion. By scaling NEE measured at flux towers to landscape and regional scales, this satellite-based method can improve NEE estimation at high spatial-temporal resolution at the landscape scale relative to methods based on MODIS data with coarser spatial-temporal resolution. This method was applied to sixteen flux sites from the Canadian Carbon Program and AmeriFlux networks located in North America, covering forest, grass, and cropland biomes. Compared to a similar method using MODIS data, our estimation is more effective for diagnosing landscape NEE with the same temporal resolution and higher spatial resolution (30m versus 1km) (r2=0.7548 vs. 0.5868, RMSE=1.3979 vs. 1.7497gCm-2day-1, average error=0.8950 vs. 1.0178gCm-2day-1, relative error=0.47 vs. 0.54 for fused Landsat and MODIS imagery, respectively). We also compared the regional NEE estimations using Carbon Tracker, our method and eddy-covariance observations. This study demonstrates that the data-driven satellite-based NEE diagnosed model can be used to upscale eddy-flux observations to landscape scales with high spatial-temporal resolutions. © 2013 Elsevier Inc.
Russell B.S.,Worcester State College
Child Abuse and Neglect | Year: 2010
In the last 10 years, over 80% of adults surveyed report some familiarity with Shaken Baby Syndrome (SBS) and the dangers of shaking infants younger than 2 years of age (Dias et al., 2005; Russell & Britner, 2006). Hence, in the context of SBS prevention, the question of whether caregivers knew the safety risks of shaking an infant becomes less meaningful than questioning whether caregivers have an awareness of alternate responses they could use to respond safely to the relatively normative occurrence of inconsolable crying (Barr, Trent, & Cross, 2006). Objective: The present work is a continuation of efforts to prevent abusive head injury during infancy particular to SBS by raising awareness and provides prevention professionals with a reliable and shorter, single-page version of the Shaken Baby Syndrome Awareness Assessment (Russell & Britner, 2006). Methods: A sample of 370 adults completed the short version of the measure during 2008. Results: Psychometric results, including Cronbach's alphas and Pearson's correlations, are all significant and meet acceptability standards. Conclusion: These results indicate the short version of the measure is ready for use in the prevention field. Practice implications: The Shaken Baby Syndrome Awareness Assessment - short version is best used to support child abuse prevention professionals in engaging caregivers in a conversation about responding to a crying infant safely. By talking about the responses a caregiver might be willing to use in the high-stress context of an infant's inconsolable crying bout, intervention efforts can be tailored to maximize on caregiver strengths and achieve a high degree of goodness of fit with the values held in the care environment. Increasing the goodness of fit between caregivers' values and the steps recommended through an intervention program supports the likelihood that the behavior described in the program's service plan will be used. © 2010 Elsevier Ltd.