2,573 research outputs found
Alien Registration- Lane, Mae M. (Bangor, Penobscot County)
https://digitalmaine.com/alien_docs/11874/thumbnail.jp
Alien Registration- Butland, Mae M. (Portland, Cumberland County)
https://digitalmaine.com/alien_docs/24153/thumbnail.jp
Alien Registration- Butland, Mae M. (Portland, Cumberland County)
https://digitalmaine.com/alien_docs/24153/thumbnail.jp
Alien Registration- Metcalfe, Mae M. (Lubec, Washington County)
https://digitalmaine.com/alien_docs/2458/thumbnail.jp
Alien Registration- Butland, Mae M. (Portland, Cumberland County)
https://digitalmaine.com/alien_docs/24153/thumbnail.jp
Community Change within a Caribbean Coral Reef Marine Protected Area following Two Decades of Local Management
Structural change in both the habitat and reef-associated fish assemblages within spatially managed coral reefs can provide key insights into the benefits and limitations of Marine Protected Areas (MPAs). While MPA zoning effects on particular target species are well reported, we are yet to fully resolve the various affects of spatial management on the structure of coral reef communities over decadal time scales. Here, we document mixed affects of MPA zoning on fish density, biomass and species richness over the 21 years since establishment of the Saba Marine Park (SMP). Although we found significantly greater biomass and species richness of reef-associated fishes within shallow habitats (5 meters depth) closed to fishing, this did not hold for deeper (15 m) habitats, and there was a widespread decline (38% decrease) in live hard coral cover and a 68% loss of carnivorous reef fishes across all zones of the SMP from the 1990s to 2008. Given the importance of live coral for the maintenance and replenishment of reef fishes, and the likely role of chronic disturbance in driving coral decline across the region, we explore how local spatial management can help protect coral reef ecosystems within the context of large-scale environmental pressures and disturbances outside the purview of local MPA management.Funding was provided by the Saba Conservation Foundation ((SCF), King Abdullah University of Science and Technology, The Australian National University and Australian Research Council. The funders had no role in study design and analysis, decision to publish, or preparation of the manuscript. Staff of the SCF were involved in data collection
Exempting low-risk health and medical research from ethics reviews: Comparing Australia, the United Kingdom, the United States and the Netherlands
Background: Disproportionate regulation of health and medical research contributes to research waste. Better understanding of exemptions of research from ethics review in different jurisdictions may help to guide modification of review processes and reduce research waste. Our aim was to identify examples of low-risk human health and medical research exempt from ethics reviews in Australia, the United Kingdom, the United States and the Netherlands. Methods: We examined documents providing national guidance on research ethics in each country, including those authored by the National Health and Medical Research Council (Australia), National Health Service (United Kingdom), the Office for Human Research Protections (United States) and the Central Committee on Research Involving Humans (the Netherlands). Examples and types of research projects exempt from ethics reviews were identified, and similar examples and types were grouped together. Results: Nine categories of research were exempt from ethics reviews across the four countries; these were existing data or specimen, questionnaire or survey, interview, post-marketing study, evaluation of public benefit or service programme, randomised controlled trials, research with staff in their professional role, audit and service evaluation, and other exemptions. Existing non-identifiable data and specimens were exempt in all countries. Four categories - evaluation of public benefit or service programme, randomised controlled trials, research with staff in their professional role, and audit and service evaluation - were exempted by one country each. The remaining categories were exempted by two or three countries. Conclusions: Examples and types of research exempt from research ethics reviews varied considerably. Given the considerable costs and burdens on researchers and ethics committees, it would be worthwhile to develop and provide clearer guidance on exemptions, illustrated with examples, with transparent underpinning rationales
Not- so-basic life
Thesis (S.M. in Science Writing)--Massachusetts Institute of Technology, Dept. of Humanities, Graduate Program in Science Writing, 2011.Cataloged from PDF version of thesis.Includes bibliographical references (p. 27-29).There are conditions on the Earth that are completely inhospitable to humans. Macroscopic life forms in these conditions are extremely rare. Microscopic life forms, however, thrive. They are called extremophiles. One subset of extremophile called the acidophile live in acidic environments, at time even more corrosive than battery acid. Acidophiles are microbes, and live together in hugely diverse ecosystems. Each species of acidophile fills a different niche. They survive in high acid environments using a number of methods, including a highly active proton pump, or five-ring structures called hopanoids that are imbedded in the cell membrane, among others. Acidophiles can be applied to many human questions. They are used in the process of bioremediation as applied to acid mine drainage sites. They are also useful in biomining. Because of their ability to flourish in near-otherworldly conditions, they have particular interest in the field of astrobiology, the search for extraterrestrial life.by Stephanie M. McPherson.S.M.in Science Writin
Energy level statistics in weakly disordered systems: from quantum to diffusive regime
We calculate two-point energy level correlation function in weakly disorderd
metallic grain with taking account of localization corrections to the universal
random matrix result. Using supersymmetric nonlinear sigma model and exactly
integrating out spatially homogeneous modes, we derive the expression valid for
arbitrary energy differences from quantum to diffusive regime for the system
with broken time reversal symmetry. Our result coincides with the one obtained
by Andreev and Altshuler [Phys. Rev. Lett. 72, 902 (1995)] where homogeneous
modes are perturbatively treated.Comment: 12 pages, no figure, REVTeX 3.1 with pLaTeX 2e; v2: minor grammatical
change
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