Now showing items 21-30 of 681
Combination of the Top Quark Mass Measurements from the Tevatron Collider
(American Physical Society, 2012)
The top quark is the heaviest known elementary particle, with a mass about 40 times larger than the mass of its isospin partner, the bottom quark. It decays almost 100% of the time to a W boson and a bottom quark. Using ...
U-series Disequilibria in Guatemalan Lavas, Crustal Contamination, and Implications for Magma Genesis Along the Central American Subduction Zone
(American Geophysical Union, 2007)
New U-series results indicate that Guatemalan volcanic rocks display both 238U and 230Th excesses. 230Th excess is restricted to volcanoes in central Guatemala, both along and behind the front. 230Th excess correlates ...
The Temporal and Spatial Scale of Microevolution: Fine-scale Color Pattern Variation in the Lake Erie Watersnake
(Evolutionary Ecology, Ltd., 2006)
Question: What is the temporal and spatial scale of microevolution? Hypotheses: The combined effects of natural selection and gene flow result in variation in heritable traits on fine spatial and geographic scales. Organism: ...
Understanding Prostitutes and Prostitution in Democratic Burma, 1942–62 State Jewels or Victims of Modernity?
(IP Publishing Ltd, 2011)
Prostitution in Burmese society, as in many South East Asian countries, is a taboo subject. Unlike prostitution in countries such as Thailand, however, prostitution in Burma does not attract strong media or scholarly ...
Measurement of the Interior Structure of Thin Polymer Films Using Grazing Incidence Diffuse X-Ray Scattering
(American Physical Society, 2010)
A method is developed for calculating the small-angle x-ray scattering originating from within the interior of a thin film under grazing incidence illumination. This offers the possibility of using x-ray scattering to ...
The Role of Carbohydrate in Maintaining Extensin in an Extended Conformation
(American Society of Plant Biologists, 1986)
Monomers of the plant cell wall glycoprotein extensin are secreted into the wall where they become cross-linked to each other to form a rigid matrix. Expression of the extensin matrix is correlated with the inhibition ...
Amplifier for Optical Stochastic Cooling
(Conference on Lasers and Electro-Optics OSA Technical Digest (online) (Optical Society of America, 2017), paper JW2A.90 •https://doi.org/10.1364/CLEO_AT.2017.JW2A.90, 2017-05-20)
The amplification of electromagnetic radiation emitted from charged-particlebeams can be used for beam cooling. We discuss our progress to develop such a system usingundulator radiation.
A Novel Phase Variation Mechanism in the Meningococcus Driven by a Ligand-Responsive Repressor and Differential Spacing of Distal Promoter Elements
Phase variable expression, mediated by high frequency reversible changes in the length of simple sequence repeats, facilitates adaptation of bacterial populations to changing environments and is frequently important in ...
Žižek and the Real Hegel
(International Journal of Žižek Studies, 2008)
Žižek's reading of Hegel is, as he and many of his readers explicitly recognize, distinctly unorthodox. Efforts to appraise these readings often make reference to and mobilize the "real Hegel," a recognized standard and ...
Evolutionary psychology: the emperor’s new paradigm
For some evolutionary psychology is merely a field of inquiry, but for others it is a robust paradigm involving specific theories about the nature and evolution of the human mind. Proponents of this paradigm claim to have ...