منابع مشابه
Animal Navigation: Northern Exposure
A recent study has found that sparrows moved gradually east above the Arctic Circle completely altered their migration strategy after encountering the massive natural change in declination near the magnetic pole. This should not happen--or should it?
متن کاملHuman exposure to piroplasms in Central and Northern Italy.
TA serosurvey has been conducted in Northern and Central Italy to investigate the presence in humans of antibodies against zoonotic Babesia and Theileria species. The study focused on a total of 432 volunteers, of which 290 were persistently exposed to tick bites because of their jobs (forester employees, livestock keepers, veterinary practitioners, farmers and hunters) and 142 resident in the ...
متن کاملExcessive Exposure Stimulates Epicormic Branching in Young Northern Hardwoods
1 Sudden and excessive exposure of northern hardwood trees often causes growth responses that degrade tree quality, injuries that lead to tree deterioration, or both. The most sensitive and visible tree reaction to increased exposure is the formation of epicormic branches. Such branches may arise along the tree bole from either dormant or adventitious buds in response to some physiological stim...
متن کاملQuartz exposure in the slate industry in northern Norway.
In this study we have measured exposure levels to quartz in different parts of the slate industry in Alta, Northern Norway. Full shift personal samples were collected from the breathing zones of outdoor and indoor workers in the slate quarries and a slate factory. The quartz content of respirable dust was between 7 and 41%. The slate factory had the lower quartz levels although 41% of total and...
متن کاملExposure to Phthalates and Breast Cancer Risk in Northern Mexico
BACKGROUND Phthalates, ubiquitous environmental pollutants that may disturb the endocrine system, are used primarily as plasticizers of polyvinyl chloride and as additives in consumer and personal care products. OBJECTIVES In this study, we examined the association between urinary concentrations of nine phthalate metabolites and breast cancer (BC) in Mexican women. METHODS We age-matched 23...
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ژورنال
عنوان ژورنال: Journal of the American College of Cardiology
سال: 1994
ISSN: 0735-1097
DOI: 10.1016/0735-1097(94)90190-2