منابع مشابه
Cumulative impact.
The terms "cumulative" and "cumulative effects" are becoming more widely used in environmental impact assessment. The popularity of the concept is understandable as our culture comes to recognize that solitary insults to the environment considered in isolation cannot capture the full effect of the problems now before us. But what exactly do we mean by the term "cumulative"? "Cumulative" means g...
متن کاملCumulative head impact burden in high school football.
Impacts to the head are common in collision sports such as football. Emerging research has begun to elucidate concussion tolerance levels, but sub-concussive impacts that do not result in clinical signs or symptoms of concussion are much more common, and are speculated to lead to alterations in cerebral structure and function later in life. We investigated the cumulative number of head impacts ...
متن کاملCumulative Mass-velocity Distribution of Impact Ejecta in Oblique Impacts
Introduction: The cumulative mass M(>ve) of impact ejecta with velocities higher than ve (hereafter we call this cumulative mass-velocity (CMV) distribution) is one of the most important parameters for understanding quantitatively the morphology of ejecta blankets around craters or the surface evolution of planetary bodies. A scaling law on CMV distribution has been formulated based on the data...
متن کاملHuman pressures on UK seabed habitats: a cumulative impact assessment
European Member States are required to assess the status of marine waters, including analysis of cumulative effects. We developed a methodology for evaluating the impact of several human activities that constitute 4 direct pressures on the UK (England and Wales) seabed community: smothering, abrasion, obstruction (sealing), and extraction. The method was tested by mapping the spatial extent of ...
متن کاملThe impact of self-reported cumulative comorbidity on stroke recovery.
SIR—This study examined the association between country of birth and type of dementia in a representative community sample of people aged 65 years and older in Britain. Both dementia overall, and the vascular subtype, were over represented among people born in Africa or the Caribbean compared with people born in the UK, despite the greater age of the latter group. People from Africa or the Cari...
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ژورنال
عنوان ژورنال: Environmental Health Perspectives
سال: 2000
ISSN: 0091-6765
DOI: 10.2307/3454329