Browsing FAS Scholarly Articles by Title
Now showing items 11728-11747 of 18258
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Oscillating Starless Cores: Nonlinear Regime
(American Astronomical Society, 2007) -
Oscillations and Variability in the P53 System
(Nature Publishing Group, 2006)Understanding the dynamics and variability of protein circuitry requires accurate measurements in living cells as well as theoretical models. To address this, we employed one of the best-studied protein circuits in human ... -
Oscillations in Supercoiling Drive Circadian Gene Expression in Cyanobacteria
(National Academy of Sciences, 2009)The cyanobacterium Synechococcus elongatus PCC 7942 exhibits oscillations in mRNA transcript abundance with 24-h periodicity under continuous light conditions. The mechanism underlying these oscillations remains elusive—neither ... -
Oscillations of Starless Cores
(American Astronomical Society, 2006)If the split, asymmetric molecular spectral line profiles that are seen in many starless cores are interpreted as indicative of global collapse or expansion of the core, then one possible implication is that most starless ... -
Osmocapillary phase separation
(Elsevier BV, 2016)A covalent network of polymer can imbibe a solvent to form a gel. In a cavity on the surface of the gel, capillary force may suck the solvent out of the gel to form a pure liquid phase. We show that such osmocapillary phase ... -
Osmotic Pressure in a Bacterial Swarm
(Elsevier BV, 2014)Using Escherichia coli as a model organism, we studied how water is recruited by a bacterial swarm. A previous analysis of trajectories of small air bubbles revealed a stream of fluid flowing in a clockwise direction ahead ... -
Osmotic stress mechanically perturbs chemoreceptors in Escherichia coli
(National Academy of Sciences, 2006)Two-component signaling systems play a major role in the long-term adaptation of microorganisms to changes in osmolarity, but how osmoreceptors work is not well understood. Temporal changes in solute concentration are ... -
Osmotic-pressure-controlled concentration of colloidal particles in thin-shelled capsules
(Nature Publishing Group, 2014)Colloidal crystals are promising structures for photonic applications requiring dynamic control over optical properties. However, for ease of processing and reconfigurability, the crystals should be encapsulated to form ... -
Osmotic-Pressure-Mediated Control of Structural Colors of Photonic Capsules
(American Chemical Society (ACS), 2015)Crystalline or glassy materials made of colloidal nanoparticles show distinctive photonic effects; the crystals exhibit sparkling colors with strong iridescence, while the glasses show noniridescent colors. Both colors are ... -
OSNAP: Faster Numerical Linear Algebra Algorithms via Sparser Subspace Embeddings
(IEEE, 2014)An oblivious subspace embedding (OSE) given some parameters \(\epsilon\), d is a distribution \(\mathcal{D}\) over matrices \(\Pi \in \mathbb{R}^{m×n}\) such that for any linear subspace \(W \subseteq \mathbb{R}^n\) with ... -
Osteological studies of archaeological materials from Bohai sites in Russia. A state of the art
(Universitat de LLeida, 2017)The history of the Bohai studies in Russia is more than 150 years old. During those years Russian scholars have produced a number of interesting and valuable publications and combine use of written sources with study of ... -
The Other Beetle-Hunter
(Nature Publishing Group, 2008) -
The Other Kind of Silencer: Armed Activism and Gender Intimidation
“Just before the lie-in at the Capitol… someone came running up to me to tell me there were hundreds of guys with guns there already. I remember walking through them, all of us, giving our speeches fighting for strong gun ... -
The Other Transformation in Econometric Practice: Robust Tools for Inference
(American Economic Association, 2010)Angrist and Pischke highlight one aspect of the research that has positively transformed econometric practice and teaching. They emphasize the rise of experiments and quasi-experiments as credible sources of identification ... -
Our Puzzling Universe: From a Promising Beginning to Forbidden Knowledge
(Johns Hopkins University Press, 2016)What is the world made of? From Antiquity to our day, philosophers and scientists have battled over this question, deploying vivid inventions of the imagination and, more recently, ominous speculations about the darkness ... -
Out of Africa: Tocqueville's Imperial Voyages
(Middle East Studies Association of North America (MESA), 2011) -
Out of Florida: mtDNA reveals patterns of migration and Pleistocene range expansion of the Green Anole lizard (Anolis carolinensis)
(Blackwell Publishing Ltd, 2012)Anolis carolinensis is an emerging model species and the sole member of its genus native to the United States. Considerable morphological and physiological variation has been described in the species, and the recent ... -
Out of Oz: Opportunities and Challenges for Using Ants (Hymenoptera: Formicidae) as Biological Indicators in North-Temperate Cold Biomes
(The Austrian Society of Entomofaunistics, 2012)I review the distribution of ant genera in cold biomes of the northern hemisphere, and discuss opportunities and challenges in using ants as environmental, ecological, and biodiversity indicators in these biomes. I present ... -
Out-of-pocket Medical Costs for Parents with Children with Down Syndrome in the United States
(2015)Financial considerations may impact the pregnancy decisions of expectant parents who receive a positive prenatal screening test result for Down syndrome (DS). This study estimates the out-of-pocket health care costs for ...