Browsing FAS Scholarly Articles by Title
Now showing items 3282-3301 of 18292
-
Curves of Every Genus with Many Points, II: Asymptotically Good Families
(Duke University Press, 2004)We resolve a 1983 question of Serre by constructing curves with many points of every genus over every finite field. More precisely, we show that for every prime power q there is a positive constant c_q with the following ... -
The Curving Shore of Time and Space: Notes on the Prologue to Pushkin’s Ruslan and Ludmila
(Brill Academic Publishers, 2012) -
Cusps are Dense
(Princeton University Press, 1991)We show cusps are dense in Bers' boundary for Teichmuller space. The proof rests on an estimate for the algebraic effect of a unit quasiconformal deformation supported in the thin part of the Riemann surface. -
Cyanide Photochemistry and Nitrogen Fractionation in the Mwc 480 Disk
(IOP Publishing, 2015)HCN is a commonly observed molecule in Solar System bodies and in interstellar environments. Its abundance with respect to CN is a proposed tracer of UV exposure. HCN is also frequently used to probe the thermal history ... -
Cyborg Organoids: Implantation of Nanoelectronics via Organogenesis for Tissue-Wide Electrophysiology
(American Chemical Society (ACS), 2019-07-26)Tissue-wide electrophysiology with single-cell and millisecond spatiotemporal resolution is critical for heart and brain studies. Issues arise, however, from the invasive, localized implantation of electronics that destroys ... -
Cycles of Civilization in Northern Mesopotamia, 4400-2000 BC
(Springer, 2009-08-18)The intensification of fieldwork in northern Mesopotamia, the upper region of the Tigris-Euphrates basin, has revealed two cycles of expansion and reduction in social complexity between 4400-2000 BC. These cycles include ... -
Cyclic endogenous estrogen and progesterone vary by mammographic density phenotypes in premenopausal women
(Lippincott Williams & Wilkins, 2016)Estrogen and progesterone are key factors in the development of breast cancer, but it remains unclear whether these hormones are associated with mammographic density phenotypes in premenopausal women. We measured percent ... -
Cyclic performance of viscoelastic dielectric elastomers with solid hydrogel electrodes
(AIP Publishing, 2014)Hydrogels containing electrolyte can work as ionic conductors to actuate dielectric elastomer (DE) artificial muscles. Based on a popular design of a circular actuator, we study theoretically and experimentally the cyclic ... -
Cyclic Strain Induces Dual-Mode Endothelial-Mesenchymal Transformation of the Cardiac Valve
(Proceedings of the National Academy of Sciences, 2011)Endothelial-mesenchymal transformation (EMT) is a critical event for the embryonic morphogenesis of cardiac valves. Inducers of EMT during valvulogenesis include VEGF, TGF-β1, and wnt/β-catenin (where wnt refers to the ... -
Cyclical Budgetary Policy and Economic Growth: What Do We Learn From OECD Panel Data?
(University of Chicago Press, 2007)This paper uses yearly panel data on OECD countries to analyze the relationship between growth and the cyclicality of government debt. We develop new time-varying estimates of the cyclicality of public debt. Our main ... -
Cyclical Unemployment: Sectoral Shifts or Aggregate Disturbances?
(University of Chicago Press, 1986)Recent work by David Lilien has argued that the positive correlation between the dispersion of employment growth rates across sectors (a) and the unemployment rate implies that sectoral shifts in labor demand are responsible ... -
Cycling of a Quinone-Bromide Flow Battery for Large-Scale Electrochemical Energy Storage
(The Electrochemical Society, 2014)We have demonstrated the performance of an aqueous redox flow battery composed of a negative electrode consisting of a redox couple between anthraquinone di-sulfonate and its corresponding hydroquinone, and a positive ... -
Cyclotomic Factors of Coxeter Polynomials
(Elsevier, 2009)In this paper we show that the cyclotomic factors of the En Coxeter polynomials depend only on the value of \(n\) mod 360, and come exclusively from spherical subdiagrams. -
Cyfarwydd as Poet in the Fourth Branch of the Mabinogi
(The Ohio State University Press, 2017)On two occasions in the Fourth Branch of the Mabinogi , the figure of Gwydion presents himself in a court as a poet and provides entertainment, presumably in prose, in the form of cyfarwyddyd , a term that has been variously ... -
Cylindrocyclophane Biosynthesis Involves Functionalization of an Unactivated Carbon Center
(American Chemical Society, 2012)The cylindrocyclophanes are a family of natural products that share a remarkable paracyclophane carbon scaffold. Using genome sequencing and bioinformatic analyses, we have discovered a biosynthetic gene cluster involved ... -
Cytoplasmic Diffusion: Molecular Motors Mix It Up
(The Rockefeller University Press, 2008)Random motion within the cytoplasm gives rise to molecular diffusion; this motion is essential to many biological processes. However, in addition to thermal Brownian motion, the cytoplasm also undergoes constant agitation ... -
D--branes and Spinning Black Holes
(Elsevier, 1996)We obtain a new class of spinning charged extremal black holes in five dimensions, considered both as classical configurations and in the Dirichlet (D)-brane representation. The degeneracy of states is computed from the ... -
D-Amino Acids Indirectly Inhibit Biofilm Formation in Bacillus subtilis by Interfering with Protein Synthesis
(American Society for Microbiology, 2013)The soil bacterium Bacillus subtilis forms biofilms on surfaces and at air-liquid interfaces. It was previously reported that these biofilms disassemble late in their life cycle and that conditioned medium from late-stage ... -
D-brane Construction of the 5D NHEK Dual
(Springer-Verlag, 2012)Extremal but non-supersymmetric charged black holes with \(SU(2)_L\) spin in IIB string theory compactified to five dimensions on \(K^3 \times S^1\) are considered. These have a near-horizon or NHEK region with an enhanced ... -
D-brane Deconstructions in IIB Orientifolds
(Institute of Physics, 2009)With model building applications in mind, we collect and develop basic techniques to analyze the landscape of D7-branes in type IIB compact Calabi-Yau orientifolds, in three different pictures: F-theory, the D7 worldvolume ...