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51 Clayton, Dale H.Darwins finches combat introduced nest parasites with fumigated cottonIntroduced parasites are a threat to biodiversity when naïve hosts lack effective defenses against such parasites [1]. Several parasites have recently colonized the Galápagos Islands, threatening native bird populations [2]. For example, the introduced parasitic nest fly Philornis downsi (Diptera:...2014-01-01
52 Coley, Phyllis D.On tropical forests and their pestsBiologists have long been intrigued by the diversity of tropical forests, where 1 hectare may hold more than 650 tree species-more than in all of Canada and the continental United States. Eco- logical theory suggests that if species are too similar in their resource use, one will out- compete the ot...2014-01-01
53 Adler, Frederick R.Reply:We appreciate the comments of Drs. Craig and Simpson and Drs. Mullins and Schwartz, and the challenge they raise to make MALD more believable, comprehensible, and usable. Acetaminophen (APAP) toxicity is indeed a complex process involving multiple steps. Although the underlying mathematics is more i...2012-01-01
54 Borodai, Anastasia S.C-F bond activationActivation of Carbon-Fluorine Bonds in 2', 3', 4', 5', 6'-Pentafluoroacetophenone through a Transition Metal Complex- Manganese PentacarbonylCarbon; Fluorine; Bond; Activation2014-05-30
55 Parkinson, John StansfieldAn unorthodox sensory adaptation site in the E. coli serine chemoreceptorThe serine chemoreceptor of E. coli contains four canonical methylation sites for sensory adaptation that lie near inter-subunit helix interfaces of the Tsr homodimer. An unexplored fifth methylation site, E502, lies at an intra-subunit helix interface, closest to the HAMP domain that controls input...2014-01-01
56 Bowling, David R.Interannual variation in seasonal drivers of soil respiration in a semi-arid Rocky Mountain meadowSemi-arid ecosystems with annual moisture inputs dominated by snowmelt cover much of the western United States, and a better understanding of their seasonal drivers of soil respiration is needed to predict consequences of climatic change on soil CO2 efflux. We assessed the relative importance of tem...2012-01-01
57 Lupton, John MarkMechanisms of spin-dependent dark conductivity in films of a soluble fullerene derivative under bipolar injectionWe report room-temperature pulsed electrically detected magnetic resonance measurements of the dark conductivity of films of the fullerene derivative [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) under bipolar (electron-hole) and unipolar (electron-rich) injection conditions. Directly after mate...2014-01-01
58 Voth, Gregory AlanNanostructural organization in acetonitrile/ionic liquid mixtures: molecular dynamics simulations and optical Kerr effect spectroscopyIn this paper, the nanostructural organization and subpicosecond intermolecular dynamics in mixtures of acetonitrile and the ionic liquid (IL) 1-pentyl-3-methylimidazolium bis{(trifluoromethane)sulfonyl}amide ([C5mim][NTf2]) were studied as a function of concentration using molecular dynamics (MD) s...2012-01-01
59 Adler, Frederick R.Mathematical modeling of liver injury and dysfunction after acetaminophen overdose: early discrimination between survival and deathAcetaminophen is the leading cause of acute liver injury in the developed world. Timely administration of N-Acetylcysteine (N-Ac) prevents the progression of serious liver injury and disease, while failure to administer N-Ac within a critical time frame allows disease progression and in the most sev...2012-01-01
60 Wu, Yong-ShiEmergent exclusion statistics of quasiparticles in two-dimensional topological phasesWe demonstrate how the generalized Pauli exclusion principle emerges for quasiparticle excitations in 2D topological phases. As an example, we examine the Levin-Wen model with the Fibonacci data (specified in the text), and construct the number operator for fluxons living on plaquettes. By numerical...2014-01-01
61 Clayton, Dale H.An experimental test of the effects of behavioral and immunological defenses against vectors: do they interact to protect birds from blood parasites?Background: Blood-feeding arthropods can harm their hosts in many ways, such as through direct tissue damage and anemia, but also by distracting hosts from foraging or watching for predators. Blood-borne pathogens transmitted by arthropods can further harm the host. Thus, effective behavioral and im...2014-01-01
62 Armentrout, Peter B.Thermodynamics and mechanism of protonated cysteine decomposition: a guided ion beam and computational studyA quantitative molecular description of the decomposition of protonated cysteine, H+Cys, is provided by studying the kinetic energy dependence of threshold collision-induced dissociation (CID) with Xe using a guided ion beam tandem mass spectrometer (GIBMS). Primary dissociation channels are deamida...2014-01-01
63 Coley, Phyllis D.Chemical and bioactive natural products from microthyriaceae sp., an endophytic fungus from a tropical grassIn screening for natural products with antiparasitic activity, an endophytic fungus, strain F2611, isolated from above-ground tissue of the tropical grass Paspalum conjugatum (Poaceae) in Panama, was chosen for bioactive principle elucidation. Cultivation on malt extract agar (MEA) followed by bioas...2014-01-01
64 Goller, FranzMotor control of sound frequency in birdsong involves the interaction between air sac pressure and labial tensionFrequency modulation is a salient acoustic feature of birdsong. Its control is usually attributed to the activity of syringeal muscles, which affect the tension of the labia responsible for sound production. We use experimental and theoretical tools to test the hypothesis that for birds producing to...2014-01-01
65 Minteer, Shelley D.Improved performance of a thylakoid bio-solar cell by incorporation of carbon quantum dotsCarbon quantum dots (CQDs) were incorporated into thylakoid bioanodes capable of direct photobioelectrocatalysis in order to increase the photocurrent generation. More thylakoids are in contact with the increased surface area which allows for greater direct electron transfer (DET). Additionally, the...2014-01-01
66 Parkinson, John StansfieldMutational analysis of the P1 phosphorylation domain in E. coli CheA, the signaling kinase for chemotaxisThe histidine autokinase CheA functions as the central processing unit in the Escherichia coli chemotaxis signaling machinery. CheA receives autophosphorylation control inputs from chemoreceptors and in turn regulates the flux of signaling phosphates to the CheY and CheB response regulator proteins...2014-01-01
67 Mishchenko, EugeneAttraction-repulsion transition in the interaction of adatoms and vacancies in grapheneThe interaction of two resonant impurities in graphene has been predicted to have a long-range character with weaker repulsion when the two adatoms reside on the same sublattice and stronger attraction when they are on different sublattices. We reveal that this attraction results from a single energ...2014-01-01
68 Hughes, Kelly T.The effect of cell growth phase on the regulatory cross-talk between flagellar and Spi1 virulence gene expressionThe flagellar regulon controls Salmonella biofilm formation, virulence gene expression and the production of the major surface antigen present on the cell surface: flagellin. At the top of a flagellar regulatory hierarchy is the master operon, flhDC, which encodes the FlhD4C2 transcriptional complex...2014-01-01
69 Parkinson, John StansfieldHAMP domain structural determinants for signalling and sensory adaptation in Tsr, the E. coli serine chemoreceptorMotile Escherichia coli cells track chemical gradients with high sensitivity over wide concentration ranges [recently reviewed in (Hazelbauer et al., 2008; Hazelbauer & Lai, 2010)]. Stimulus detection, amplification, and integration occur in an arrayed network of signaling complexes that contain tra...2014-01-01
70 Capecchi, Mario R.Sepp1UF forms are N-terminal selenoprotein P truncations that have peroxidase activity when coupled with thioredoxin reductase-1Mouse selenoprotein P (Sepp1) consists of an N-terminal domain (residues 1-239) that contains 1 selenocysteine (U) as residue 40 in a proposed redox-active motif (-UYLC-) and a Cterminal domain (residues 240-361) that contains 9 selenocysteines. Sepp1 transports selenium from the liver to other tiss...2014-01-01
71 Bohs, Lynn A.Two new species from the brevantherum clade of solanum (solanaceae) from eastern BrazilTwo new species of Solanum (Solanaceae) from eastern Brazil are described. Solanum anisocladum Giacomin & Stehmann is similar to S. megalochiton Mart., but differs by the indument of the adaxial leaf surface, which is composed of long porrect-stellate and unbranched trichomes. It also has a more rob...2013-01-01
72 Adler, Frederick R.Long-term models of oxidative stress and mitochondrial damage in insulin resistance progressionInsulin resistance, characterized by a reduced cellular response to insulin, is a major factor in type 2 diabetes pathogenesis, with a complex etiology consisting of a combination of environmental and genetic factors. Oxidative stress, which develops through an accumulation of toxic reactive oxygen ...2014-01-01
73 Crespo, Jose GuillermoDislodgement effect of natural semiochemicals released by disturbed triatomines: a possible alternative monitoring toolThe quick detection of domestic and peridomestic triatomines in their environments becomes difficult without the use of dislodgement substances that flush them out from their shelters. At present, tetramethrin 0.2% is being widely used in control programs. Although it is an efficient dislodging agen...2013-01-01
74 Jorgensen, ErikAxon regeneration genes identified by RNAi screening in C. elegansAxons of the mammalian CNS lose the ability to regenerate soon after development due to both an inhibitory CNS environment and the loss of cell-intrinsic factors necessary for regeneration. The complex molecular events required for robust regeneration of mature neurons are not fully understood, part...2014-01-01
75 Gerton, JordanImproved localization accuracy in stochastic super-resolution fluorescence microscopy by K-factor image deshadowingLocalization of a single fluorescent particle with sub-diffraction-limit accuracy is a key merit in localization microscopy. Existing methods such as photoactivated localization microscopy (PALM) and stochastic optical reconstruction microscopy (STORM) achieve localization accuracies of single emitt...2014-01-01
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