Now showing items 1-10 of 100
Substituent effects on the oxidation of substituted biphenyl congeners by type II methanotroph strain CSC1
(Springer-Verlag, 2005-05)
The oxidation potential of type II groundwater methanotroph, strain CSC1, expressing soluble methane monooxygenase, was measured in the presence of 10 ortho -substituted biphenyls with varying electronics, sterics, and ...
More TORC for the gluconeogenic engine
(Wiley Subscription Services, Inc., A Wiley Company, 2006-03)
Hepatic gluconeogenesis plays a key role in the maintenance of glucose homeostasis. The hormone glucagon stimulates this process, whereas insulin and adiponectin are inhibitory. In a recent report, Koo et al identify the ...
Rates of evolution on the time scale of the evolutionary process
(Kluwer Academic Publishers; Springer Science+Business Media, 2001-11)
A generational time scale, involving change from one generation to the next, is the time scale of evolution by natural selection. Microevolutionary and macroevolutionary patterns reflect this process on longer time scales. ...
The effect of mean and variance in resource supply on survival of annuals from Mediterranean and desert environments
(Springer-Verlag, 2004-10)
Resource availability is often characterized by mean annual amounts, while ignoring the spatial variation within habitats and the temporal variation within a year. Yet, temporal and spatial variation may be especially ...
Receptor-related interactions of opiates with PGE-induced adneylate cyclase in brain
(Elsevier, 2006-04-07)
The inhibition by opiates of the PGE2-induced formation of cAMP in slices from rat brain striatum was investigated. A maximal, 3.5-fold increase over the basal level of cAMP was obtained with an EC50 for PGE2 of 3 [mu]M. ...
Hair cells in the inner ear of the pirouette and shaker 2 mutant mice
(Kluwer Academic Publishers; Springer Science+Business Media, 2000-04)
The shaker 2 ( sh2 ) and pirouette ( pi ) mouse mutants display severe inner ear dysfunction that involves both auditory and vestibular manifestation. Pathology of the stereocilia of hair cells has been found in both ...
Expression of Treponema denticola Oligopeptidase B in Escherichia coli
(Springer-Verlag; Springer-Verlag New York Inc., 2004-05)
Treponema denticola is a small anaerobic spirochete often isolated from periodontal lesions and closely associated with periodontal diseases. This bacterium possesses a particular arginine peptidase activity (previously ...
Checkpoints and restriction points in bacteria and eukaryotic cells
(Wiley Subscription Services, Inc., A Wiley Company, 2006-10)
Bacterial checkpoints, analogous to those proposed to exist in eukaryotic cells, offer insights into the definition of a checkpoint. Examination of bacterial “checkpoint” or arrest phenomena illustrate problems with a ...
Spring ephemeral herbs and nitrogen cycling in a northern hardwood forest: an experimental test of the vernal dam hypothesis
(Springer-Verlag; Springer-Verlag Berlin Heidelberg, 2000-08)
In the late 1970s R.N. Muller and F.H. Bormann posited their ”vernal dam” hypothesis, stating that spring-ephemeral herbs in deciduous forests serve as a temporary sink for N when overstory trees are dormant, and then ...
Performance of a generalist grasshopper on a C 3 and a C 4 grass: compensation for the effects of elevated CO 2 on plant nutritional quality
(Springer-Verlag, 2004-06)
The increasing CO 2 concentration in Earth’s atmosphere is expected to cause a greater decline in the nutritional quality of C 3 than C 4 plants. As a compensatory response, herbivorous insects may increase their feeding ...