Results 181 to 190 of about 26,369 (217)
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The Effect of Size and Age of Subject on Airway Responsiveness in Children
American journal of respiratory and critical care medicine, 1995Abstract Methodologies used to assess airway responsiveness (AR) in children administer the same dosage schedule to all children despite the great range in the size of subjects. The aim of this study was to examine the hypothesis that the level of AR is size dependent within same-age cohorts and between different ages.
P N, Le Souëf, M R, Sears, D, Sherrill
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GAA expansion size and age at onset of Friedreich’s ataxia
Neurology, 2003More than 95% of patients with Friedreich ataxia (FA) are homozygous for GAA trinucleotide repeat expansions within intron 1 of the FRDA gene located on chromosome 9q13.1 A clear relation between GAA expansion size and phenotype variability has been found, and the size of the smaller GAA expansion (GAA1 allele) is the major determining factor for the ...
I, Mateo +5 more
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Influence of Letter Size on Age Differences in Letter Matching
Journal of Gerontology, 1994We tested healthy young and older adults on a simultaneous presentation, letter-matching task that varied letter size. The goal of the experiment was to determine if older adults' higher baseline level of internal noise would affect age differences in letter-matching performance as letter size was varied. The results indicated that both young and older
P A, Allen, M B, Patterson, R E, Propper
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Foveal Flicker Sensitivity: Pupil Size and Aging
Noninvasive Assessment of The Visual System, 1988Changes in retinal health with aging or disease may affect an observer’s ability to detect flickering light.1,2,3 The de Lange function4 describes an observer’s contrast sensitivity to various rates of sinusoidal flicker and, with the addition of a nonlinearity, can account for all traditional flicker fusion data.5 We present data showing the effects ...
Melanie J. Mayer, Charlene B. Y. Kim
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Sclerochronology and the Size versus Age Problem
1988The rekindling of interest surrounding the role of heterochrony in the evolution of life has produced many examples of paedomorphosis and peramorphosis among fossil taxa, attesting to the ubiquity of this phenomenon (McNamara, 1986, and this volume). Nevertheless, two significant problems are intimately associated with such heterochronic studies: (1 ...
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Ontogenetic growth and size-at-age shape metabolic scaling
Journal of Experimental BiologyABSTRACT Metabolic scaling describes the relationship between metabolic rate and body mass and has traditionally been investigated across individuals or species. Scaling of metabolic rate within individuals as they grow through ontogeny has received far less attention.
Anna H. Andreassen +2 more
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AB1 Liver size/height/age [radiography]
1991An estimate of the liver size may be obtained at radiography, even if both ultrasound and scintigraphy offer more accurate information.
Holger Pettersson, Hans Ringertz
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How firms grow and the influence of size and age
International Small Business Journal: Researching Entrepreneurship, 2011The growth process is revealed by tracing the diachronic paths followed by sixty growth firms over the period from 1994 through 2007. Initial employment size, rather than age, was found to have some bearing on the nature of the growth path. Smaller firms grew more often and with more continuity than larger firms. In the larger firms, growth occurred in
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Blood Pressure and Heart Size in Aging Rats
Journal of Gerontology, 1955B N, BERG, C R, HARMISON
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Metastatic pheochromocytoma: does the size and age matter?
European journal of clinical investigation, 2012Pheochromocytomas are tumours arising from chromaffin tissue located in the adrenal medulla associated with typical symptoms and signs which may occasionally develop metastases, which are defined as the presence of tumour cells at sites where these cells are not found.
Tomáš, Zelinka +7 more
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