Browsing FAS Scholarly Articles by Title
Now showing items 4800-4819 of 18292
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An Embryonic Stem Cell-Based System for Rapid Analysis of Transcriptional Enhancers
(Wiley Periodicals, Inc., 2012)With the growing use of genome-wide screens for cis-regulatory elements, there is a pressing need for platforms that enable fast and cost-effective experimental validation of identified hits in relevant developmental and ... -
Emergence and evolution of inter-specific segregating retrocopies in cynomolgus monkey (Macaca fascicularis) and rhesus macaque (Macaca mulatta)
(Nature Publishing Group, 2016)Retroposition is an RNA-mediated mechanism to generate gene duplication, and is believed to play an important role in genome evolution and phenotypic adaptation in various species including primates. Previous studies ... -
Emergence of a super-synchronized mobbing state in a large population of coupled chemical oscillators
(Nature Publishing Group, 2016)Oscillatory phenomena are ubiquitous in Nature. The ability of a large population of coupled oscillators to synchronize constitutes an important mechanism to express information and establish communication among members. ... -
Emergence of Cooperation and Evolutionary Stability in Finite Populations
(Nature Publishing Group, 2004)To explain the evolution of cooperation by natural selection has been a major goal of biologists since Darwin. Cooperators help others at a cost to themselves, while defectors receive the benefits of altruism without ... -
Emergence of reconfigurable wires and spinners via dynamic self-assembly
(Nature Publishing Group, 2015)Dissipative colloidal materials use energy to generate and maintain structural complexity. The energy injection rate, and properties of the environment are important control parameters that influence the outcome of dynamic ... -
The Emergence of Sex Differences
(University of Chicago Press, 1972) -
Emergence of species in evolutionary “simulated annealing”
(Proceedings of the National Academy of Sciences, 2009)Which factors govern the evolution of mutation rates and emergence of species? Here, we address this question by using a first principles model of life where population dynamics of asexual organisms is coupled to molecular ... -
Emergence of Very Broad Infrared Absorption Band by Hyperdoping of Silicon with Chalcogens
(AIP Publishing, 2013)We report the near through mid-infrared (MIR) optical absorption spectra, over the range 0.05–1.3 eV, of monocrystalline silicon layers hyperdoped with chalcogen atoms synthesized by ion implantation followed by pulsed ... -
Emergency Department Profits Are Likely To Continue As The Affordable Care Act Expands Coverage
(Health Affairs (Project Hope), 2014)To better understand the financial viability of hospital emergency departments (EDs), we created national estimates of the cost to hospitals of providing ED care and the associated hospital revenue using hospital financial ... -
Emergent Dark Matter, Baryon, and Lepton Numbers
(Springer, 2011)We present a new mechanism for transferring a pre-existing lepton or baryon asymmetry to a dark matter asymmetry that relies on mass mixing which is dynamically induced in the early universe. Such mixing can succeed with ... -
Emergent Dirac fermions and broken symmetries in confined and deconfined phases of Z2 gauge theories
(Springer Nature, 2017)Lattice gauge theories are ubiquitous in physics, describing a wide range of phenomena from quark confinement to quantum materials. At finite fermion density, gauge theories are notoriously hard to analyze due to the fermion ... -
Emergent gauge fields and the high-temperature superconductors
(The Royal Society, 2016)The quantum entanglement of many states of matter can be represented by electric and magnetic fields, much like those found in Maxwell’s theory. These fields ‘emerge’ from the quantum structure of the many-electron state, ... -
Emergent Percolation Length and Localization in Random Elastic Networks
(American Physical Society, 2013) -
The emerging genomics and systems biology research lead to systems genomics studies
(BioMed Central, 2014)Synergistically integrating multi-layer genomic data at systems level not only can lead to deeper insights into the molecular mechanisms related to disease initiation and progression, but also can guide pathway-based ... -
Emerging interactions between skin stem cells and their niches
(Nature Publishing Group, 2014)The skin protects mammals from insults, infection and dehydration and enables thermoregulation and sensory perception. Various skin-resident cells carry out these diverse functions. Constant turnover of cells and healing ... -
Emerging Market Business Cycles: The Cycle is the Trend
(University of Chicago Press, 2007)Emerging market business cycles exhibit strongly countercyclical current accounts, consumption volatility that exceeds income volatility, and “sudden stops” in capital inflows. These features contrast with developed small ... -
Emerging methods and tools for environmental risk assessment, decision-making, and policy for nanomaterials: summary of NATO Advanced Research Workshop
(Springer Netherlands, 2008)Nanomaterials and their associated technologies hold promising opportunities for the development of new materials and applications in a wide variety of disciplines, including medicine, environmental remediation, waste ... -
Emerging optical properties from the combination of simple optical effects
(IOP Publishing, 2017)Structural color arises from the patterning of geometric features or refractive indices of the constituent materials on the length-scale of visible light. Many different organisms have developed structurally colored materials ... -
An Emerging Picture of Neoproterozoic Ocean Chemistry: Insights from the Chuar Group, Grand Canyon, USA
(Elsevier, 2009)Detailed iron, sulfur and carbon chemistry through the > 742 million year old ChuarGroup reveals a marine basin dominated by anoxic and ferrous iron-rich (ferruginous) bottom waters punctuated, late in the basin's development, ... -
Emerging Themes in the History of Medicine
(Blackwell Publishing, 1991)