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  • 1
    Electronic Resource
    Electronic Resource
    A Method for Obtaining the Nuclear Component in Active Galaxies (1998)
    Springer
    Astrophysics and space science 263 (1998), S. 119-122 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We present a new method for the obtention of the nuclear component of active galatic nuclei, that relies on the convolution of a two-dimensional model of the host galaxy, based on seeing-free morphological parameters, with the seeing PSF. The procedure overcomes some limitations of the methods currently in use and does not assume that the nucleus is unresolved.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1002164917638
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    Paper (German National Licenses)
    Fulltext
  • 2
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    A free boundary problem related to the location of volcanic gas sources (2004)
    In:  Pure and Applied Geophysics, London, Geological Society, vol. 161, no. 7, pp. 1509-1517, pp. L11303, (ISBN 1-86239-117-3)
    Details
    Publication Date: 2004
    Keywords: Diffusion ; Geochemistry ; Volcanology ; PAG ; Fernandez ; Diaz
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    BIBLIOGRAPHY SEISMOLOGY
  • 3
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    The CMS experiment at the CERN LHC (2008)
    Institute of Physics
    Details
    Publication Date: 2008-08-14
    Electronic ISSN: 1748-0221
    Topics: Physics
    Published by Institute of Physics
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  • 4
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    MTHFD1 controls DNA methylation in Arabidopsis (2016)
    Springer Nature
    Details
    Publication Date: 2016-06-16
    Description: Article DNA methylation contributes to transcriptional silencing. Here, Groth et al. show that mutant plants defective in MTHFD1, an enzyme involved in folate metabolism, have a DNA hypomethylation phenotype highlighting the link between one-carbon metabolism and DNA methylation, which is mediated by SAM as a common methyl donor. Nature Communications doi: 10.1038/ncomms11640 Authors: Martin Groth, Guillaume Moissiard, Markus Wirtz, Haifeng Wang, Carolina Garcia-Salinas, Perla A. Ramos-Parra, Sylvain Bischof, Suhua Feng, Shawn J. Cokus, Amala John, Danielle C. Smith, Jixian Zhai, Christopher J. Hale, Jeff A. Long, Ruediger Hell, Rocío I. Díaz de la Garza, Steven E. Jacobsen
    Electronic ISSN: 2041-1723
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General , Physics
    Published by Springer Nature
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  • 5
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    The BaLROG project - I. Quantifying the influence of bars on the kinematics of nearby galaxies (2015)
    Oxford University Press
    Details
    Publication Date: 2015-06-05
    Description: We present the BaLROG (Bars in Low Redshift Optical Galaxies) sample of 16 morphologically distinct barred spirals to characterize observationally the influence of bars on nearby galaxies. Each galaxy is a mosaic of several pointings observed with the integral-field unit (IFU) SAURON leading to a tenfold sharper spatial resolution (~100 pc) compared to ongoing IFU surveys. In this paper we focus on the kinematic properties. We calculate the bar strength $Q_{\rm _b}$ from classical torque analysis using 3.6-μm Spitzer (S 4 G) images, but also develop a new method based solely on the kinematics. A correlation between the two measurements is found and backed up by N -body simulations, verifying the measurement of $Q_{\rm _b}$ . We find that bar strengths from ionized gas kinematics are ~2.5 larger than those measured from stellar kinematics and that stronger bars have enhanced influence on inner kinematic features. We detect that stellar angular momentum ‘dips’ at 0.2 ± 0.1 bar lengths and half of our sample exhibits an anticorrelation of h 3 –stellar velocity ( v /) in these central parts. An increased flattening of the stellar gradient with increasing bar strength supports the notion of bar-induced orbit mixing. These measurements set important constraints on the spatial scales, namely an increasing influence in the central regions (0.1–0.5 bar lengths), revealed by kinematic signatures due to bar-driven secular evolution in present-day galaxies.
    Print ISSN: 0035-8711
    Electronic ISSN: 1365-2966
    Topics: Physics
    Published by Oxford University Press
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  • 6
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    A common signalosome for programmed cell death in humans and plants (2014)
    Springer Nature
    Details
    Publication Date: 2014-07-04
    Description: A common signalosome for programmed cell death in humans and plants Cell Death and Disease 5, e1314 (July 2014). doi:10.1038/cddis.2014.280 Authors: J Martínez-Fábregas, I Díaz-Moreno, K González-Arzola, A Díaz-Quintana & M A De la Rosa
    Electronic ISSN: 2041-4889
    Topics: Biology , Medicine
    Published by Springer Nature
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  • 7
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    Model-data comparison of Mid-Continental intensive (MCI) field campaign atmospheric CO2 mole fractions (2014)
    Wiley
    Details
    Publication Date: 2014-08-16
    Description: Atmospheric transport model errors are a major contributor to uncertainty in CO 2 inverse flux estimates. Our study compares CO 2 mole fraction observations from the North American Carbon Program Mid-Continental Intensive (MCI) field campaign and modeled mole fractions from two atmospheric transport models: the global Transport Model 5 from NOAA's CarbonTracker system and the mesoscale Weather Research and Forecasting model. Both models are coupled to identical CO 2 fluxes and lateral boundary conditions from CarbonTracker (CT2009 release). Statistical analyses were performed for two periods of 2007 using observed daily daytime average mole fractions of CO 2 to test the ability of these models to reproduce the observations, and to infer possible causes of the discrepancies. TM5-CT2009 overestimates midsummer atmospheric boundary layer CO 2 for sites in the U.S. corn belt by 10 ppm. WRF-CT2009 estimates diverge from the observations with similar magnitudes, but the signs of the differences vary from site to site. The modeled mole fractions are highly correlated with the observed seasonal cycle (r ≥ 0.7), but less correlated in the growing season, where weather-related changes in CO 2 dominate the observed variability. Spatial correlations in residuals from TM5-CT2009 are higher than WRF-CT2009 perhaps due to TM5's coarse horizontal resolution and shallow vertical mixing. Vertical mixing appears to have influenced CO 2 residuals from both models. TM5-CT2009 has relatively weak vertical mixing near the surface limiting the connection between local CO 2 surface fluxes and boundary layer. WRF-CT2009 has stronger vertical mixing that may increase the connections between local surface fluxes and the boundary layer.
    Print ISSN: 0148-0227
    Topics: Geosciences , Physics
    Published by Wiley on behalf of American Geophysical Union (AGU).
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  • 8
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    Microstructural optimization of a zeolite membrane for organic vapor separation (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-03-08
    Description: A seeded growth method for the fabrication of high-permeance, high-separation-factor zeolite (siliceous ZSM-5, [Si96O192]-MFI) membranes is reported. The method consists of growing the crystals of an oriented seed layer to a well-intergrown film by avoiding events that lead to a loss of preferred orientation, such as twin overgrowths and random nucleation. Organic polycations are used as zeolite crystal shape modifiers to enhance relative growth rates along the desirable out-of-plane direction. The polycrystalline films are thin (approximately 1 micrometer) with single grains extending along the film thickness and with large in-plane grain size (approximately 1 micrometer). The preferred orientation is such that straight channels with an open diameter of approximately 5.5 angstroms run down the membrane thickness. Comparison with previously reported membranes shows that these microstructurally optimized films have superior performance for the separation of organic mixtures with components that have small differences in size and shape, such as xylene isomers.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lai, Zhiping -- Bonilla, Griselda -- Diaz, Isabel -- Nery, Jose Geraldo -- Sujaoti, Khristina -- Amat, Miguel A -- Kokkoli, Efrosini -- Terasaki, Osamu -- Thompson, Robert W -- Tsapatsis, Michael -- Vlachos, Dionisios G -- New York, N.Y. -- Science. 2003 Apr 18;300(5618):456-60. Epub 2003 Mar 6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemical Engineering, University of Massachusetts, Amherst, MA 01003, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12624179" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 9
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    Genetic damage in patients moving from hemodialysis to online hemodiafiltration (2016)
    Oxford University Press
    Details
    Publication Date: 2016-02-11
    Description: End-stage renal failure patients exhibit a high incidence of genetic damage and genomic instability. Part of this genetic damage is assumed to be caused by the hemodialysis (HD) procedure. To reduce these effects, different alternative HD procedures have been proposed, such as the use of high efficiency convective therapies to improve the reactive oxygen species/antioxidant ratio. To determine the efficiency of online hemodiafiltration (HDF) technique on the levels of DNA damage, we have measured the frequency of micronucleus in peripheral blood lymphocytes of 33 individuals moving from low-flux HD to post-dilution online HDF. In addition to basal levels of genetic damage, potential changes in radiosensitivity were measured as indicators of genomic instability. Plasma antioxidant capacity was also determined. Second samples were obtained after 6 months on the HDF protocol. Results indicate that moving to online HDF therapy produce a significant reduction of the basal levels of genetic damage, but does not affect the genomic instability status. In addition, a greater increase in plasma antioxidant capacity was observed. In spite of the lack of correlation between these parameters, our results confirm the usefulness of the online HDF technique as a way to reduce DNA damage in HD patients.
    Print ISSN: 0267-8357
    Electronic ISSN: 1464-3804
    Topics: Biology , Medicine
    Published by Oxford University Press
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  • 10
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    The genome of Tetranychus urticae reveals herbivorous pest adaptations (2011)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2011-11-25
    Description: The spider mite Tetranychus urticae is a cosmopolitan agricultural pest with an extensive host plant range and an extreme record of pesticide resistance. Here we present the completely sequenced and annotated spider mite genome, representing the first complete chelicerate genome. At 90 megabases T. urticae has the smallest sequenced arthropod genome. Compared with other arthropods, the spider mite genome shows unique changes in the hormonal environment and organization of the Hox complex, and also reveals evolutionary innovation of silk production. We find strong signatures of polyphagy and detoxification in gene families associated with feeding on different hosts and in new gene families acquired by lateral gene transfer. Deep transcriptome analysis of mites feeding on different plants shows how this pest responds to a changing host environment. The T. urticae genome thus offers new insights into arthropod evolution and plant-herbivore interactions, and provides unique opportunities for developing novel plant protection strategies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grbic, Miodrag -- Van Leeuwen, Thomas -- Clark, Richard M -- Rombauts, Stephane -- Rouze, Pierre -- Grbic, Vojislava -- Osborne, Edward J -- Dermauw, Wannes -- Ngoc, Phuong Cao Thi -- Ortego, Felix -- Hernandez-Crespo, Pedro -- Diaz, Isabel -- Martinez, Manuel -- Navajas, Maria -- Sucena, Elio -- Magalhaes, Sara -- Nagy, Lisa -- Pace, Ryan M -- Djuranovic, Sergej -- Smagghe, Guy -- Iga, Masatoshi -- Christiaens, Olivier -- Veenstra, Jan A -- Ewer, John -- Villalobos, Rodrigo Mancilla -- Hutter, Jeffrey L -- Hudson, Stephen D -- Velez, Marisela -- Yi, Soojin V -- Zeng, Jia -- Pires-daSilva, Andre -- Roch, Fernando -- Cazaux, Marc -- Navarro, Marie -- Zhurov, Vladimir -- Acevedo, Gustavo -- Bjelica, Anica -- Fawcett, Jeffrey A -- Bonnet, Eric -- Martens, Cindy -- Baele, Guy -- Wissler, Lothar -- Sanchez-Rodriguez, Aminael -- Tirry, Luc -- Blais, Catherine -- Demeestere, Kristof -- Henz, Stefan R -- Gregory, T Ryan -- Mathieu, Johannes -- Verdon, Lou -- Farinelli, Laurent -- Schmutz, Jeremy -- Lindquist, Erika -- Feyereisen, Rene -- Van de Peer, Yves -- England -- Nature. 2011 Nov 23;479(7374):487-92. doi: 10.1038/nature10640.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, The University of Western Ontario, London N6A 5B7, Canada. mgrbic@uwo.ca〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22113690" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Physiological/*genetics/physiology ; Animals ; Ecdysterone/analogs & derivatives/genetics ; Evolution, Molecular ; Fibroins/genetics ; Gene Expression Regulation ; Gene Transfer, Horizontal/genetics ; Genes, Homeobox/genetics ; Genome/*genetics ; Genomics ; Herbivory/*genetics/physiology ; Molecular Sequence Data ; Molting/genetics ; Multigene Family/genetics ; Nanostructures/chemistry ; Plants/parasitology ; Silk/biosynthesis/chemistry ; Tetranychidae/*genetics/*physiology ; Transcriptome/genetics
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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