Browsing Faculty of Arts and Sciences by Title
Now showing items 2620-2639 of 24540
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Channel Length Scaling in Microwave Graphene Field Effect Transistors
(2018-05-12)In order to operate at microwave frequencies and higher, the channel length of a field effect transistor must be made very short ($\sim25$nm at 1THz) to minimize input capacitance and the drift time of carriers through the ... -
Chaos in the Test Particle Eccentric Kozai-lidov Mechanism
(American Astronomical Society, 2014)The Kozai-Lidov mechanism can be applied to a vast variety of astrophysical systems involving hierarchical three-body systems. Here, we study the Kozai-Lidov mechanism systematically in the test particle limit at the ... -
Character before the Novel: Representing Moral Identity in the Age of Shakespeare
(2013-02-20)This dissertation argues that the modern concept of literary character was an unintended consequence of Renaissance moral poetics. The evolution of "character" as a term of literary analysis, from the rediscovery of ... -
Character displacement and community assembly in Anolis lizards
(2013-10-08)At broad scales, community ecologists study how biogeographic factors like environmental dissimilarity and geographic distance influence community assembly and composition. At small scales, community ecologists study how ... -
Character Displacement Is a Pattern: So, What Causes It?
(Oxford University Press (OUP), 2017-04-01)Character displacement was originally defined simply as a pattern – divergence between two species in sympatry but not allopatry – and it was recognized that multiple processes might generate this pattern. However, over ... -
Characteristic scales during reionization
(Oxford University Press, 2006)One of the key observables of the reionization era is the distribution of neutral and ionized gas. Recently, Furlanetto, Zaldarriaga and Hernquist developed a simple analytic model to describe the growth of H II regions ... -
Characteristic Variability Timescales in the Gamma-Ray Power Spectra of Blazars
(American Astronomical Society, 2019-10-24)Characteristic variability timescales in blazar γ-ray light curves can provide insights into the physical processes responsible for γ-ray variability. The power spectral density (PSD) is capable of revealing such timescales, ... -
Characteristics of Kepler Planetary Candidates Based on the First Data Set
(American Astronomical Society, 2011)In the spring of 2009, the Kepler Mission commenced high-precision photometry on nearly 156,000 stars to determine the frequency and characteristics of small exoplanets, conduct a guest observer program, and obtain ... -
Characteristics of Planetary Candidates Observed by Kepler . Ii. Analysis of the First Four Months of Data
(American Astronomical Society, 2011)On 2011 February 1 the Kepler mission released data for 156,453 stars observed from the beginning of the science observations on 2009 May 2 through September 16. There are 1235 planetary candidates with transit-like ... -
Characterization and Biocatalytic Potential of an Enzymatic Friedel–Crafts Alkylation from Cylindrocyclophane Biosynthesis
(2022-06-06)The cyanobacterial enzyme CylK assembles the cylindrocylophane natural products by performing two sequential Friedel–Crafts alkylation reactions, forming new alkyl–aryl carbon–carbon bonds between resorcinol nucleophiles ... -
Characterization and Detection of a Widely Distributed Gene Cluster That Predicts Anaerobic Choline Utilization by Human Gut Bacteria
(American Society of Microbiology, 2015)ABSTRACT Elucidation of the molecular mechanisms underlying the human gut microbiota’s effects on health and disease has been complicated by difficulties in linking metabolic functions associated with the gut community as ... -
Characterization and Disruption of Cis Regulatory Elements in Cancer
(2016-05-11)Enhancers are cis regulatory elements that play key roles in the control of cell-type specific gene expression programs. In cancer, enhancer deregulation plays a key role in maintaining gene regulatory programs that underlie ... -
Characterization and Fabrication of the TES Arrays for the Spider, Keck and BICEP2 CMB Polarimeters
(Springer Science + Business Media, 2012)Spider, the Keck Array, and BICEP2 are projects to study the polarization of the cosmic microwave background (CMB). All three use large format arrays of antenna-coupled, membrane-isolated, transition edge sensors (TES’s). ... -
Characterization and functional modulation of the cancer stem cell state in colorectal cancer
(2021-05-14)Colorectal cancer (CRC) is the second leading cause of death among cancer patients in the United States and is characterized by a high degree of intratumor heterogeneity, which likely contributes to the difficulty in ... -
Characterization and Mitigation of Bias in Parametric Mapping of Reward-Induced Dopamine Release using Simultaneous Positron Emission Tomography and Magnetic Resonance Imaging
(2020-09-25)The dopamine system plays an essential role in learning associated with reward expectation and receipt. [11C]Raclopride positron emission tomography (PET) can be used to observe dopamine D2/D3 receptor binding and its ... -
Characterization and Quantification of the Role of Coherence in Ultrafast Quantum Biological Experiments Using Quantum Master Equations, Atomistic Simulations, and Quantum Process Tomography
(Elsevier, 2011)Long-lived electronic coherences in various photosynthetic complexes at cryogenic and room temperature have generated vigorous efforts both in theory and experiment to understand their origins and explore their potential ... -
Characterization and Structural Studies of the Plasmodium Falciparum Ubiquitin and Nedd8 Hydrolase UCHL3
(American Society for Biochemistry and Molecular Biology, 2010)Like their human hosts, Plasmodium falciparum parasites rely on the ubiquitin-proteasome system for survival. We previously identified PfUCHL3, a deubiquitinating enzyme, and here we characterize its activity and changes ... -
Characterization of a Mechanically Tunable Gyroid Photonic Crystal Inspired by the Butterfly Parides Sesostris
(Wiley, 2015)Dynamically tunable three-dimensional photonic materials offer potential for the development of novel optical technologies. For spectral ranges of interest, however, the systematic and high-throughput characterization of ... -
Characterization of a regiospecific epivancosaminyl transferase GtfA and enzymatic reconstitution of the antibiotic chloroeremomycin
(National Academy of Sciences, 2004)Chloroeremomycin, a vancomycin family glycopeptide antibiotic has three sugars, one D-glucose and two L-4-epi-vancosamines, attached to the crosslinked heptapeptide backbone by three glycosyltransferases, GtfA, -B, and -C. ... -
Characterization of an Autotrophic Sulfide-Oxidizing Marine Arcobacter sp. That Produces Filamentous Sulfur
(American Society for Microbiology, 2002)A coastal marine sulfide-oxidizing autotrophic bacterium produces hydrophilic filamentous sulfur as a novel metabolic end product. Phylogenetic analysis placed the organism in the genus Arcobacter in the epsilon subdivision ...