منابع مشابه
Early Indications of Future Cognitive Decline: Stable versus Declining Controls
This study aimed to identify baseline features of normal subjects that are associated with subsequent cognitive decline. Publicly available data from the Alzheimer's Disease Neuroimaging Initiative was used to find differences in baseline clinical assessments (ADAScog, AVLT, FAQ) between cognitively healthy individuals who will suffer cognitive decline within 48 months and those who will remain...
متن کاملDeclining male births with increasing geographical latitude in Europe.
OBJECTIVE Demographic studies in various industrialised countries have shown a decline in male births in the latter half of the 20th century from the expected ratio of 0.515 (males/total). This study analyses trends in this ratio over the period 1890 to 1995 in Malta, and also analyses this ratio for Western European countries for the period 1990-1995. DESIGN Births subdivided by sex were obt...
متن کاملIncreasing health insurance costs and the decline in insurance coverage.
OBJECTIVE To determine the impact of rising health insurance premiums on coverage rates. DATA SOURCES & STUDY SETTING Our analysis is based on two cohorts of nonelderly Americans residing in 64 large metropolitan statistical areas (MSAs) surveyed in the Current Population Survey in 1989-1991 and 1998-2000. Measures of premiums are based on data from the Health Insurance Association of America...
متن کاملRecent Widespread Tree Growth Decline Despite Increasing Atmospheric CO2
BACKGROUND The synergetic effects of recent rising atmospheric CO(2) and temperature are expected to favor tree growth in boreal and temperate forests. However, recent dendrochronological studies have shown site-specific unprecedented growth enhancements or declines. The question of whether either of these trends is caused by changes in the atmosphere remains unanswered because dendrochronology...
متن کاملLong-term decline in grassland productivity driven by increasing dryness
Increasing aridity and drought severity forecast for many land areas could reduce the land carbon (C) sink. However, with limited long-term direct measures, it is difficult to distinguish direct drying effects from counter effects of CO2 enrichment and nitrogen (N) deposition. Here, we document a >50% decline in production of a native C3 grassland over four decades and assign the forcing and ti...
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ژورنال
عنوان ژورنال: Physics World
سال: 1998
ISSN: 0953-8585,2058-7058
DOI: 10.1088/2058-7058/11/4/40