Now showing items 3980-3999 of 7061

  • Microbial iron uptake as a mechanism for dispersing iron from deep-sea hydrothermal vents 

    Li, Meng; Toner, Brandy M.; Baker, Brett J.; Breier, John A.; Sheik, Cody S.; Dick, Gregory J. (2014-01)
    Deep-sea hydrothermal vents are a significant source of oceanic iron. Although hydrothermal iron rapidly precipitates as inorganic minerals upon mixing with seawater, it can be stabilized by organic matter and dispersed ...
  • Microbial production and consumption of marine dissolved organic matter 

    Becker, Jamie W. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2013-06)
    Marine phytoplankton are the principal producers of oceanic dissolved organic matter (DOM), the organic substrate responsible for secondary production by heterotrophic microbes in the sea. Despite the importance of DOM ...
  • Microbial rhodopsins on leaf surfaces of terrestrial plants 

    Atamna-Ismaeel, Nof; Finkel, Omri M.; Glaser, Fabian; Sharon, Itai; Schneider, Ron; Post, Anton F.; Spudich, John L.; von Mering, Christian; Vorholt, Julia A.; Iluz, David; Beja, Oded; Belkin, Shimshon (2011-06-14)
    The above-ground surfaces of terrestrial plants, the phyllosphere, comprise the main interface between the terrestrial biosphere and solar radiation. It is estimated to host up to 1026 microbial cells that may intercept ...
  • Microbial services : challenges for microbial ecologists in a changing world 

    Ducklow, Hugh W. (Inter-Research, 2008-09-18)
    Bacteria, archaea and other microbes have dominated most biogeochemical processes on Earth for >99% of the history of life, but within the past few decades anthropogenic activity has usurped their dominance. Human activity ...
  • Microbial size spectra from diverse marine ecosystems 

    Gin, Karina Y. H. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1996-06)
    Characteristics of microbial size spectra (bacteria and phytoplankton) were examined in relation to changes in ecosystem productivity and environmental perturbations. Samples were obtained from productive coastal waters ...
  • Microbiological characterization of post-eruption “snowblower” vents at Axial Seamount, Juan de Fuca Ridge 

    Meyer, Julie L.; Akerman, Nancy H.; Proskurowski, Giora; Huber, Julie A. (Frontiers Media, 2013-06-17)
    Microbial processes within the subseafloor can be examined during the ephemeral and uncommonly observed phenomena known as snowblower venting. Snowblowers are characterized by the large quantity of white floc that is ...
  • The microbiome in pediatric cystic fibrosis patients : the role of shared environment suggests a window of intervention 

    Hampton, Thomas H.; Green, Deanna M.; Cutting, Garry R.; Morrison, Hilary G.; Sogin, Mitchell L.; Gifford, Alex H.; Stanton, Bruce A.; O’Toole, George A. (BioMed Central, 2014-04-28)
    Cystic fibrosis (CF) is caused by mutations in the CFTR gene that predispose the airway to infection. Chronic infection by pathogens such as Pseudomonas aeruginosa leads to inflammation that gradually degrades lung function, ...
  • Microearthquake evidence for reaction-driven cracking within the Trans-Atlantic Geotraverse active hydrothermal deposit 

    Pontbriand, Claire W.; Sohn, Robert A. (John Wiley & Sons, 2014-03-19)
    We detected 32,078 very small, local microearthquakes (average ML = −1) during a 9 month deployment of five ocean bottom seismometers on the periphery of the Trans-Atlantic Geotraverse active mound. Seismicity rates were ...
  • Microearthquake patterns following the 1998 eruption of Axial Volcano, Juan de Fuca Ridge : mechanical relaxation and thermal strain 

    Sohn, Robert A.; Barclay, Andrew H.; Webb, Spahr C. (American Geophysical Union, 2004-01-14)
    Ocean bottom seismic networks deployed following the 1998 eruption of Axial seamount reveal an evolving pattern of microearthquake activity associated with subsurface magmatism and thermal strain. Seismicity rates decay ...
  • Micros in libraries. 

    Dugan, Robert E. (IAMSLIC, 1985)
  • Microseism noise in the Philippine Sea [poster]  

    Stephen, Ralph A.; Bromirski, Peter D.; Gerstoft, Peter; Worcester, Peter F. (2013-12)
    Microseism noise, generated by wave-wave interaction of ocean surface gravity waves and peaking between 0.1 and 0.5Hz, is the largest amplitude, continuous (acceleration) vibration on earth in the seismic band from 0.0001 ...
  • Microstructural and biochemical characterization of the nanoporous sucker rings from Dosidicus gigas 

    Miserez, Ali; Weaver, James C.; Pedersen, Peter B.; Schneeberk, Todd; Hanlon, Roger T.; Kisailus, David; Birkedal, Henrik (2008-11-24)
    Recent interest in the development of environmentally benign routes to the synthesis of novel multifunctional materials has resulted in numerous investigations into structure-function relationships of a wide range of ...
  • Microtransplantation of cellular membranes from squid stellate ganglion reveals ionotropic GABA receptors 

    Conti, Luca; Limon, Agenor; Palma, Eleonora; Miledi, Ricardo (Marine Biological Laboratory, 2013-02-01)
    The squid has been the most studied cephalopod, and it has served as a very useful model for investigating the events associated with nerve impulse generation and synaptic transmission. While the physiology of squid giant ...
  • Microtubule dynamics in cell division : exploring living cells with polarized light microscopy 

    Inoue, Shinya (2008-04-11)
    This Perspective is an account of my early experience while I studied the dynamic organization and behavior of the mitotic spindle and its submicroscopic filaments using polarized light microscopy. The birefringence of ...
  • Microtubule plus-end dynamics in Xenopus egg extract spindles 

    Tirnauer, Jennifer S.; Salmon, Edward D.; Mitchison, Timothy J. (American Society for Cell Biology, 2004-02-06)
    Microtubule dynamics underlie spindle assembly, yet we do not know how the spindle environment affects these dynamics. We developed methods for measuring two key parameters of microtubule plus-end dynamic instability in ...
  • Microtubules do not promote mitotic slippage when the spindle assembly checkpoint cannot be satisfied 

    Brito, Daniela A.; Yang, Zhenye; Rieder, Conly L. (Rockefeller University Press, 2008-08-18)
    When the spindle assembly checkpoint (SAC) cannot be satisfied, cells exit mitosis via mitotic slippage. In microtubule (MT) poisons, slippage requires cyclin B proteolysis, and it appears to be accelerated in drug ...
  • Microwave radar cross sections and Doppler velocities measured in the surf zone 

    Farquharson, Gordon; Frasier, Stephen J.; Raubenheimer, Britt; Elgar, Steve (American Geophysical Union, 2005-12-23)
    The relationship between microwave imaging radar measurements of fluid velocities in the surf zone and shoaling, breaking, and broken waves is studied with field observations. Normalized radar cross section (NRCS) and ...
  • Microzooplankton grazing along the Western Antarctic Peninsula 

    Garzio, Lori M.; Steinberg, Deborah K.; Erickson, Matthew; Ducklow, Hugh W. (Inter-Research, 2013-09-18)
    The significance of microzooplankton as grazers in pelagic ecosystems has been established, yet relatively few studies of microzooplankton grazing, compared to that of macrozooplankton, have been conducted in the Southern ...
  • The mid-depth circulation of the northwestern tropical Atlantic observed by floats 

    Lankhorst, Matthias; Fratantoni, David M.; Ollitrault, Michel; Richardson, Philip L.; Send, Uwe; Zenk, Walter (2009-05-29)
    A comprehensive analysis of velocity data from subsurface floats in the northwestern tropical Atlantic at two depth layers is presented: one representing the Antarctic Intermediate Water (AAIW, pressure range 600–1050 ...
  • Mid-ocean microseisms 

    Bromirski, Peter D.; Duennebier, Fred K.; Stephen, Ralph A. (American Geophysical Union, 2005-04-20)
    The Hawaii-2 Observatory (H2O) is an excellent site for studying the source regions and propagation of microseisms since it is located far from shorelines and shallow water. During Leg 200 of the Ocean Drilling Program, ...