منابع مشابه
Acute cadmium toxicity studies upon nine species of aquatic insects.
Continuous-flow bioassays were employed to determine 96.hour median tolerance limits (TLm), for the stonefly. Pteronnrcrllu hadia (Hagen) (TLm was 18.0 mg Cd/l) and the mayfly, Ephemerella grundis grarzdis Eaton (TLm was 28.0 mg Cd/l). Ninety-six hours TLm values for other species of aquatic insects tested were not determined, since these species were relatively insensitive to cadmium. Insects ...
متن کاملA bizarre object to swallow.
To cite: Meshikhes A-WN, Al-Dolah Q. BMJ Case Rep Published online: [please include Day Month Year] doi:10.1136/bcr-2013201296 DESCRIPTION A 35-year-old mentally retarded man was admitted with a 3-day history of epigastric pain, vomiting and feeling of fullness. Clinically, he was pale, but was not in distress and his vital signs were normal. Abdominal examination revealed deep tenderness and a...
متن کاملSwallow surprise
of Virginia's governor Tim Kaine to sign a bill banning the use of certain state funds for embryonic stem cell research. This move has an ironic twist as Obama nominated Kaine as chairman of the Democratic National Committee, a position he will take on full time when his term as governor expires next January. In Germany, production of and research with new stem cell lines are still off limits, ...
متن کاملSwallow preservation exercises during chemoradiation therapy maintains swallow function.
OBJECTIVE To evaluate a swallow preservation protocol (SPP) in which patients received swallow therapy before, during, and after radiation treatment and its efficacy in maintaining swallowing function in head and neck cancer patients. DESIGN Case series with chart review. SETTING Tertiary care academic medical center. SUBJECTS AND METHODS Eighty-five patients who received radiation (RT) o...
متن کاملBioaccumulation of Polychlorinated Biphenyls from Sediments to Aquatic Insects and Tree Swallow Eggs and Nestlings in Saginaw Bay, Michigan, Usa
Sediments in the Saginaw Bay region of the Great Lakes contain concentrations of polychlorinated biphenyls (PCBs) that may adversely affect biotic species in various trophic levels. In this study we collected and analyzed sediments, benthic invertebrates, tree swallow eggs, and nestlings to evaluate linkages between PCBs in sediments and at various trophic levels in the Saginaw River, Michigan,...
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ژورنال
عنوان ژورنال: Nature
سال: 1870
ISSN: 0028-0836,1476-4687
DOI: 10.1038/002495b0