Peter Schiffman

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We studied the rate of initial "misdiagnosis', along with factors than might distinguish such patients, in 64 patients with amyotrophic lateral sclerosis (ALS) who completed a survey of 34 questions. Announcement of the survey was made by electronic newsletter and users group bulletin board directed at ALS patients. The questionnaire was distributed to(More)
The Earth's crust hosts a subsurface, dark, and oligotrophic biosphere that is poorly understood in terms of the energy supporting its biomass production and impact on food webs at the Earth's surface. Dark oligotrophic volcanic ecosystems (DOVEs) are good environments for investigations of life in the absence of sunlight as they are poor in organics, rich(More)
In six patients an apnoea test was carried out to confirm brain death according to a protocol recommended in the USA. After ten minutes' apnoea the pCO2 did not reach the target value of 7.98 kPa (60 mm Hg) in any of these patients. This was caused by the low initial value and the slow increase of the pCO2. Moreover, we could not confirm the belief that the(More)
Minerals such as sulfates, phyllosilicates, and iron oxides/oxyhydroxides (FeOx) are good indicators of soil formation processes and have all been identified on Mars. Here we apply integrated analyses of data from recent missions and alteration of tephra at Haleakala crater, Maui, to soil formation processes on Mars. This tephra contains amorphous silica,(More)
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