Now showing items 4026-4045 of 7061

  • Mitochondrial respiration and Ca2+ waves are linked during fertilization and meiosis completion 

    Dumollard, Remi; Hammar, Katherine; Porterfield, D. Marshall; Smith, Peter J. S.; Cibert, Christian; Rouviere, Christian; Sardet, Christian (Company of Biologists Limited, 2003)
    Fertilization increases both cytosolic Ca2+ concentration and oxygen consumption in the egg but the relationship between these two phenomena remains largely obscure. We have measured mitochondrial oxygen consumption and ...
  • Mixing across the Arctic Ocean : microstructure observations during the Beringia 2005 Expedition 

    Rainville, Luc; Winsor, Peter (American Geophysical Union, 2008-04-30)
    Turbulent-scale temperature and conductivity were measured during the pan-arctic Beringia 2005 Expedition. The rates of dissipation of thermal variance and diapycnal diffusivities are calculated along a section from Alaska ...
  • Mixing and dynamics of the Mediterranean outflow 

    Baringer, Molly O. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1993-10)
    Hydrographic and expendable current profiler (XCP) data taken during the Gulf of Cadiz Expedition in September 1988 are analyzed to diagnose the mixing and dynamics of the Mediterranean outflow. The overall structure of ...
  • Mixing and entrainment in hydraulically driven stratified sill flows 

    Nielsen, Morten Holtegaard; Pratt, Lawrence J.; Helfrich, Karl R. (Cambridge University Press, 2004-09-09)
    The investigation involves the hydraulic behaviour of a dense layer of fluid flowing over an obstacle and subject to entrainment of mass and momentum from a dynamically inactive (but possibly moving) overlying fluid. An ...
  • Mixing and entrainment in the Red Sea outflow plume. Part I : plume structure 

    Peters, Hartmut; Johns, William E.; Bower, Amy S.; Fratantoni, David M. (American Meteorological Society, 2005-05)
    When the salty and heavy water of the Red Sea exits from the Strait of Bab el Mandeb, it continues downslope into the Gulf of Aden mainly along two channels. The 130-km-long “Northern Channel” (NC) is topographically ...
  • Mixing and general circulation dynamics : theory and observations 

    Tziperman, Eli (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1987-02)
    This thesis studies the role of cross-isopycnal mixing in general circulation dynamics, from both the theoretical and observational points of view. The first two chapters discuss some theoretical aspects of cross-isopycnal ...
  • Mixing at the head of a canyon : a laboratory investigation of fluid exchanges in a rotating, stratified basin 

    Wells, Judith R.; Helfrich, Karl R. (American Geophysical Union, 2006-12-05)
    Observations indicate that oceanic mixing is intensified near the head of submarine canyons. How the presence of canyon walls affects the local production and distribution of mixed fluid is an open question. These dynamics ...
  • Mixing by shear instability at high Reynolds number 

    Geyer, W. Rockwell; Lavery, Andone C.; Scully, Malcolm E.; Trowbridge, John H. (American Geophysical Union, 2010-11-25)
    Shear instability is the dominant mechanism for converting fluid motion to mixing in the stratified ocean and atmosphere. The transition to turbulence has been well characterized in laboratory settings and numerical ...
  • Mixing in a coastal environment : 1. A view from dye dispersion 

    Ledwell, James R.; Duda, Timothy F.; Sundermeyer, Miles A.; Seim, Harvey E. (American Geophysical Union, 2004-10-26)
    Dye release experiments were performed together with microstructure profiling to compare the two methods of estimating diapycnal diffusivity during summer and fall stratification on the continental shelf south of New ...
  • Mixing in a density-driven current flowing down a slope in a rotating fluid 

    Cenedese, Claudia; Adduce, Claudia (Cambridge University Press, 2008-05-14)
    We discuss laboratory experiments investigating mixing in a density-driven current flowing down a sloping bottom, in a rotating homogenous fluid. A systematic study spanning a wide range of Froude, 0.8 < Fr < 10, and ...
  • Mixing in the North Atlantic Tracer Release Experiment : observations and numerical simulations of Lagrangian particles and passive tracer 

    Sundermeyer, Miles A. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1995-09)
    Mixing and stirring of passive tracer and Lagrangian particles in the open ocean was studied through comparison of observations from the North Atlantic Tracer Release Experiment, a numerical model, and existing theory. ...
  • Mixing processes and hydraulic control in a highly stratified estuary 

    MacDonald, Daniel G. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2003-02)
    This thesis utilizes field data from the Fraser River Estuary, a highly stratified system located in southwestern British Columbia, Canada, to investigate the nature of mixing processes in a highly stratified environment, ...
  • Mixing variability in the Southern Ocean 

    Meyer, Amelie; Sloyan, Bernadette M.; Polzin, Kurt L.; Phillips, Helen E.; Bindoff, Nathaniel L. (American Meteorological Society, 2015-04)
    A key remaining challenge in oceanography is the understanding and parameterization of small-scale mixing. Evidence suggests that topographic features play a significant role in enhancing mixing in the Southern Ocean. This ...
  • Mixotrophy : a widespread and important ecological strategy for planktonic and sea-ice nanoflagellates in the Ross Sea, Antarctica 

    Moorthi, Stefanie D.; Caron, David A.; Gast, Rebecca J.; Sanders, Robert W. (Inter-Research, 2009-03-04)
    Mixotrophic nanoflagellates (MNF) were quantified in plankton and sea ice of the Ross Sea, Antarctica, during austral spring. Tracer experiments using fluorescently labeled bacteria (FLB) were conducted to enumerate MNF ...
  • MIxS-BE : a MIxS extension defining a minimum information standard for sequence data from the built environment 

    Glass, Elizabeth M.; Dribinsky, Yekaterina; Yilmaz, Pelin; Levin, Hal; Van Pelt, Robert; Wendel, Doug; Wilke, Andreas; Eisen, Jonathan A.; Huse, Susan M.; Shipanova, Anna; Sogin, Mitchell L.; Stajich, Jason; Knight, Rob; Meyer, Folker; Schriml, Lynn M. (Nature Publishing Group, 2013-10-24)
    The need for metadata standards for microbe sampling in the built environment.
  • Mobility of authigenic rhenium, silver, and selenium during postdepositional oxidation in marine sediments 

    Crusius, John; Thomson, John (2002-07-04)
    Sedimentary records of redox-sensitive trace elements hold significant potential as indicators of paleoceanographic environmental conditions. Records of Re can reveal the intensity of past reducing conditions in sediments ...
  • Modal analysis of the range evolution of broadband wavefields in the North Pacific Ocean : low mode numbers 

    Udovydchenkov, Ilya A.; Brown, Michael G.; Duda, Timothy F.; Mercer, James A.; Andrew, Rex K.; Worcester, Peter F.; Dzieciuch, Matthew A.; Howe, Bruce M.; Colosi, John A. (Acoustical Society of America, 2012-06)
    The results of mode-processing measurements of broadband acoustic wavefields made in the fall of 2004 as part of the Long-Range Ocean Acoustic Propagation Experiment (LOAPEX) in the eastern North Pacific Ocean are reported ...
  • Modal analysis of vertical array receptions for the Heard Island Feasibility Test 

    Sperry, Brian J. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1994-05)
    During the 1991 Heard Island Feasibility Test, a vertical hydrophone array deployed off Monterey, CA, recorded transmissions from a low-frequency acoustic source nearly 18,000 km away. By determining the modal structure ...
  • Modal processing for acoustic communications in shallow water experiment 

    Morozov, Andrey K.; Preisig, James C.; Papp, Joseph C. (Acoustical Society of America, 2008-09)
    Acoustical array data from the Shallow Water Acoustics experiment was processed to show the feasibility of broadband mode decomposition as a preprocessing method to reduce the effective channel delay spread and concentrate ...
  • A modal/WKB inversion method for determining sound speed profiles in the ocean and ocean bottom 

    Casey, Kevin D. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1988-06)
    Two approaches to determining the ocean sound speed profile using measured acoustic modal eigenvalues are examined. Both methods use measured eigenvalues and mode dependent assumed values of the WKB phase integral as ...