Now showing items 1-10 of 1890
Gradients of absorption-line strengths in elliptical galaxies
We have restudied line-strength gradients of 80 elliptical galaxies. Typical metallicity gradients of elliptical galaxies are Delta[Fe/H]/Delta log r similar or equal to -0.3, which is flatter than the gradients predicted ...
A Subarcsecond Resolution Near infrared Study of Seyfert and “Normal” Galaxies. I. Imaging Data
We present new high-resolution near-infrared observations in the J, H, and K bands, obtained to study the properties of Seyfert host galaxies. The data set consists of images in the three bands of practically the entire ...
Evolution of dust extinction and supernova cosmology
We have made a quantitative calculation for the systematic evolution of the average extinction by interstellar dust in host galaxies of high-redshift Type Ia supernovae by using a realistic model of photometric and chemical ...
Selective discrimination learning impairments in mice expressing the human Huntington's disease mutation
Cognitive decline is apparent in the early stages of Huntington's disease and progressively worsens throughout the course of the disease. Expression of the human Huntington's disease mutation in mice (R6/2 line) causes a ...
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Mutation analysis of cis-elements in the 3'- and 5'-untranslated regions of satellite tobacco necrosis virus strain C RNA
The putative, 3'-terminal stem-loop structure in satellite tobacco necrosis virus strain C (STNV-C) RNA constitutes an essential cis-acting structure for the promotion of negative-strand RNA synthesis and a single- stranded ...
Expression of the pea (Pisum sativum L.) α-tubulin gene TubA1 is correlated with cell division activity
Microtubules are thought to be major determinants of plant morphogenesis, through effects on planes of cell division and on directions of differential cell expansion. In differentiation and redifferentiation processes, ...
Nutrient management strategies of small-holder farmers in a short-fallow farming system in north-east Nigeria
This paper presents the results of a study into farmers' management of nutrient dynamics in a short-fallow farming system in northern Nigeria. The research described and quantified the main nutrient flows into and out of ...
Conducting randomized trials in general practice : methodological and practical issues
The evaluation of the outcome of health services technologies is a requirement for their efficient provision in clinical practice. The most reliable evidence for treatment efficacy comes from randomized trials. Randomized ...