Now showing items 41-50 of 94
Effect of ambient humidity on dichotomous sampler coarse/fine ratios
(Elsevier, 1988)
Atmospheric aerosols were measured in August 1983 on Allegheny Mountain and Laurel Hill in southwestern Pennsylvania. Ambient humidity was observed to influence the coarse to fine particle ratios as determined by dichotomous ...
Novel mutations in XLRS1 causing retinoschisis, including first evidence of putative leader sequence change
(John Wiley & Sons, Inc., 1999-11)
Juvenile retinoschisis is an X-linked recessive disease caused by mutations in the XLRS1 gene. We screened 31 new unrelated patients and families for XLRS1 mutations in addition to previously reported mutations for 60 of ...
Synergism of mutant frequencies in the mouse lymphoma cell mutagenicity assay by binary mixtures of methyl methanesulfonate and ethyl methanesulfonate
(Elsevier, 1988-10)
The effect of mixed mutagen exposures on the rate and type of induced mutants was studied in the L5178Y/TK+/- --> TK-/- mouse lymphoma cell mutagenicity assay. In this assay, exposure to ethyl methanesulfonate (EMS) ...
On weighting the rates in non-response weights
(John Wiley & Sons, Ltd., 2003-05-15)
A basic estimation strategy in sample surveys is to weight units inversely proportional to the probability of selection and response. Response weights in this method are usually estimated by the inverse of the sample-weighted ...
Variance estimation for clustered recurrent event data with a small number of clusters
(John Wiley & Sons, Ltd., 2005-10-15)
Often in biomedical studies, the event of interest is recurrent and within-subject events cannot usually be assumed independent. In semi-parametric estimation of the proportional rates model, a working independence assumption ...
Mitochondrial polymorphisms and susceptibility to type 2 diabetes-related traits in Finns
(Springer-Verlag, 2005-11)
Mitochondria play an integral role in ATP production in cells and are involved in glucose metabolism and insulin secretion, suggesting that variants in the mitochondrial genome may contribute to diabetes susceptibility. ...
Evidence for the existence of neurotoxic esterase in neural and lymphatic tissue of the adult hen,
(Elsevier, 1982-03-15)
Hen brain and spinal cord contain a number of esterases that hydrolyze phenyl valerate (PV). Most of this activity is sensitive to inhibition by micromolar concentrations of paraoxon. Included among the paraoxon-resistant ...
The effect of cost sharing on the use of antibiotics in ambulatory care: Results from a population-based randomized controlled trial,
(Elsevier, 1987)
Little is known about how generosity of insurance and population characteristics affect quantity or appropriateness of antibiotic use. Using insurance claims for antibiotics from 5765 non-elderly people who lived in six ...
Factors Controlling Mercury Transport in an Upland Forested Catchment
(Kluwer Academic Publishers; Springer Science+Business Media, 1998-07)
Total mercury (Hg) deposition and input/output relationships were investigated in an 11-ha deciduous forested catchment in northern Vermont as part of ongoing evaluations of Hg cycling and transport in the Lake Champlain ...