Now showing items 21-40 of 801

  • Application of DMSP/OLS nighttime light images : a meta-analysis and a systematic literature review 

    Huang, Qingxu; Yang, Xi; Gao, Bin; Yang, Yang; Zhao, Yuanyuan (MDPI AG, 2014-07-25)
    Since the release of the digital archives of Defense Meteorological Satellite Program Operational Line Scanner (DMSP/OLS) nighttime light data in 1992, a variety of datasets based on this database have been produced and ...
  • The application of δ18O and δD for understanding water pools and fluxes in a Typha Marsh 

    Bijoor, Neeta S.; Pataki, Diane E.; Rocha, Adrian V.; Goulden, Michael L. (2011-05)
    The δ18O and δD composition of water pools (leaf, root, standing water, and soil water) and fluxes (transpiration, evaporation) were used to understand ecohydrological processes in a managed Typha latifolia L. freshwater ...
  • Applications of natural language processing in biodiversity science 

    Thessen, Anne E.; Cui, Hong; Mozzherin, Dmitry (Hindawi Publishing, 2012)
    Centuries of biological knowledge are contained in the massive body of scientific literature, written for human-readability but too big for any one person to consume. Large-scale mining of information from the literature ...
  • Archaea and bacteria with surprising microdiversity show shifts in dominance over 1,000-year time scales in hydrothermal chimneys 

    Brazelton, William J.; Ludwig, Kristin A.; Sogin, Mitchell L.; Andreishcheva, Ekaterina N.; Kelley, Deborah S.; Shen, Chuan-Chou; Edwards, R. Lawrence; Baross, John A. (2009-12-06)
    The Lost City Hydrothermal Field, an ultramafic-hosted system located 15 km west of the Mid-Atlantic Ridge, has experienced at least 30,000 years of hydrothermal activity. Previous studies have shown that its carbonate ...
  • The Arctic freshwater system : changes and impacts 

    White, Daniel; Hinzman, Larry; Alessa, Lilian; Cassano, John; Chambers, Molly; Falkner, Kelly; Francis, Jennifer; Gutowski, William J.; Holland, Marika M.; Holmes, Robert M.; Huntington, Henry; Kane, Douglas; Kliskey, Andrew; Lee, Craig M.; McClelland, James W.; Peterson, Bruce J.; Rupp, T. Scott; Straneo, Fiamma; Steele, Michael; Woodgate, Rebecca; Yang, Daqing; Yoshikawa, Kenji; Zhang, Tingjun (American Geophysical Union, 2007-11-20)
    Dramatic changes have been observed in the Arctic over the last century. Many of these involve the storage and cycling of fresh water. On land, precipitation and river discharge, lake abundance and size, glacier area and ...
  • Arp2/3 complex inhibition radically alters lamellipodial actin architecture, suspended cell shape, and the cell spreading process 

    Henson, John H.; Yeterian, Mesrob; Weeks, Richard M.; Medrano, Angela E.; Brown, Briana L.; Geist, Heather L.; Pais, Mollyann D.; Oldenbourg, Rudolf; Shuster, Charles B. (American Society for Cell Biology, 2015-01-07)
    Recent studies have investigated the dendritic actin cytoskeleton of the cell edge's lamellipodial (LP) region by experimentally decreasing the activity of the actin filament nucleator and branch former, the Arp2/3 complex. ...
  • Arrestin in ciliary invertebrate photoreceptors : molecular identification and functional analysis in vivo 

    Gomez, Maria del Pilar; Espinosa, Lady; Ramirez, Nelson; Nasi, Enrico (Society for Neuroscience, 2011-02-02)
    Arrestin was identified in ciliary photoreceptors of Pecten irradians, and its role in terminating the light response was established electrophysiologically. Downstream effectors in these unusual visual cells diverge from ...
  • ASPIRE : the Amundsen Sea Polynya International Research Expedition 

    Yager, Patricia L.; Sherrell, Robert M.; Stammerjohn, Sharon E.; Alderkamp, Anne-Carlijn; Schofield, Oscar M. E.; Abrahamsen, E. Povl; Arrigo, Kevin R.; Bertilsson, Stefan; Garay, D. Lollie; Guerrero, Raul; Lowry, Kate E.; Moksnes, Per-Olav; Ndungu, Kuria; Post, Anton F.; Randall-Goodwin, Evan; Riemann, Lasse; Severmann, Silke; Thatje, Sven; van Dijken, Gert L.; Wilson, Stephanie (The Oceanography Society, 2012-09)
    In search of an explanation for some of the greenest waters ever seen in coastal Antarctica and their possible link to some of the fastest melting glaciers and declining summer sea ice, the Amundsen Sea Polynya International ...
  • Assessing the carbon balance of circumpolar Arctic tundra using remote sensing and process modeling 

    Sitch, Stephen; McGuire, A. David; Kimball, John S.; Gedney, Nicola; Gamon, John; Engstrom, Ryan; Wolf, Annett; Zhuang, Qianlai; Clein, Joy S.; McDonald, Kyle C. (Ecological Society of America, 2007-01)
    This paper reviews the current status of using remote sensing and process-based modeling approaches to assess the contemporary and future circumpolar carbon balance of Arctic tundra, including the exchange of both carbon ...
  • Atypical properties of a conventional calcium channel β subunit from the platyhelminth Schistosoma mansoni 

    Salvador-Recatala, Vicenta; Schneider, Toni; Greenberg, Robert M. (BioMed Central, 2008-03-26)
    The function of voltage-gated calcium (Cav) channels greatly depends on coupling to cytoplasmic accessory β subunits, which not only promote surface expression, but also modulate gating and kinetic properties of the α1 ...
  • Auditory evoked potential audiometry in fish 

    Ladich, Friedrich; Fay, Richard R. (Springer, 2013-01-18)
    A recent survey lists more than 100 papers utilizing the auditory evoked potential (AEP) recording technique for studying hearing in fishes. More than 95 % of these AEP-studies were published after Kenyon et al. introduced ...
  • Augmin : a protein complex required for centrosome-independent microtubule generation within the spindle 

    Goshima, Gohta; Mayer, Mirjam; Zhang, Nan; Stuurman, Nico; Vale, Ronald D. (Rockefeller University Press, 2008-04-28)
    Since the discovery of γ-tubulin, attention has focused on its involvement as a microtubule nucleator at the centrosome. However, mislocalization of {gamma}-tubulin away from the centrosome does not inhibit mitotic spindle ...
  • Augmin-dependent microtubule nucleation at microtubule walls in the spindle 

    Kamasaki, Tomoko; O’Toole, Eileen; Kita, Shigeo; Osumi, Masako; Usukura, Jiro; McIntosh, J. Richard; Goshima, Gohta (Rockefeller University Press, 2013-07-01)
    The formation of a functional spindle requires microtubule (MT) nucleation from within the spindle, which depends on augmin. How augmin contributes to MT formation and organization is not known because augmin-dependent MTs ...
  • Automated simultaneous analysis phylogenetics (ASAP) : an enabling tool for phlyogenomics 

    Sarkar, Indra Neil; Egan, Mary G.; Coruzzi, Gloria; Lee, Ernest K.; DeSalle, Rob (BioMed Central, 2008-02-19)
    The availability of sequences from whole genomes to reconstruct the tree of life has the potential to enable the development of phylogenomic hypotheses in ways that have not been before possible. A significant bottleneck ...
  • Axial Seamount 

    Chadwick, William W.; Butterfield, David A.; Embley, Robert W.; Tunnicliffe, Verena; Huber, Julie A.; Nooner, Scott L.; Clague, David A. (Oceanography Society, 2010-03)
    Axial Seamount is a hotspot volcano superimposed on the Juan de Fuca Ridge (JdFR) in the Northeast Pacific Ocean. Due to its robust magma supply, it rises ~ 800 m above the rest of JdFR and has a large elongate summit ...
  • Bacterial group II introns in a deep-sea hydrothermal vent environment 

    Podar, Mircea; Mullineaux, Lauren S.; Huang, Hon-Ren; Perlman, Philip S.; Sogin, Mitchell L. (American Society for Microbiology, 2002-12)
    Group II introns are catalytic RNAs and mobile retrotransposable elements known to be present in the genomes of some nonmarine bacteria and eukaryotic organelles. Here we report the discovery of group II introns in a ...
  • Bacterioplankton community shifts in an Arctic lake correlate with seasonal changes in organic matter source 

    Crump, Byron C.; Kling, George W.; Bahr, Michele; Hobbie, John E. (American Society for Microbiology, 2003-04)
    Seasonal shifts in bacterioplankton community composition in Toolik Lake, a tundra lake on the North Slope of Alaska, were related to shifts in the source (terrestrial versus phytoplankton) and lability of dissolved organic ...
  • Baleen whales are not important as prey for killer whales Orcinus orca in high-latitude regions 

    Mehta, Amee V.; Allen, Judith M.; Constantine, Rochelle; Garrigue, Claire; Jann, Beatrice; Jenner, Curt; Marx, Marilyn K.; Matkin, Craig O.; Mattila, David K.; Minton, Gianna; Mizroch, Sally A.; Olavarría, Carlos; Robbins, Jooke; Russell, Kirsty G.; Seton, Rosemary E.; Steiger, Gretchen H.; Víkingsson, Gísli A.; Wade, Paul R.; Witteveen, Briana H.; Clapham, Phillip J. (Inter-Research, 2007-10-25)
    Certain populations of killer whales Orcinus orca feed primarily or exclusively on marine mammals. However, whether or not baleen whales represent an important prey source for killer whales is debatable. A hypothesis by ...
  • Barnegat Bay-Little Egg Harbor Estuary : case study of a highly eutrophic coastal bay system 

    Kennish, Michael J.; Bricker, Suzanne B.; Dennison, William C.; Glibert, Patricia M.; Livingston, Robert J.; Moore, Kenneth A.; Noble, Rachel T.; Paerl, Hans W.; Ramstack, Joy M.; Seitzinger, Sybil P.; Tomasko, David A.; Valiela, Ivan (2006-09-26)
    The Barnegat Bay-Little Egg Harbor Estuary is classified here as a highly eutrophic estuary based on application of NOAA’s National Estuarine Eutrophication Assessment model. Because it is shallow, poorly flushed, and ...
  • Bcl-xL regulates metabolic efficiency of neurons through interaction with the mitochondrial F1FO ATP synthase 

    Alavian, Kambiz N.; Li, Hongmei; Collis, Leon P.; Bonanni, Laura; Zeng, Lu; Sacchetti, Silvio; Lazrove, Emma; Nabili, Panah; Flaherty, Benjamin; Graham, Morven; Chen, Yingbei; Messerli, Shanta M.; Mariggio, Maria A.; Rahner, Christoph; McNay, Ewan; Shore, Gordon; Smith, Peter J. S.; Hardwick, J. Marie; Jonas, Elizabeth A. (2011-06)
    Anti-apoptotic BCL-2 family proteins such as Bcl-xL protect cells from death by sequestering apoptotic molecules, but also contribute to normal neuronal function. We find in hippocampal neurons that Bcl-xL enhances the ...