Now showing items 5208-5227 of 8741

    • Mycorrhizal fungi supply nitrogen to host plants in Arctic tundra and boreal forests : 15N is the key signal 

      Hobbie, John E.; Hobbie, Erik A.; Drossman, Howard; Conte, Maureen H.; Weber, John C.; Shamhart, Julee; Weinrobe, Melissa (NRC Research Press, 2009-02-03)
      Symbiotic fungi’s role in providing nitrogen to host plants is well-studied in tundra at Toolik Lake, Alaska, but little-studied in the adjoining boreal forest ecosystem. Along a 570 km north–south transect from the Yukon ...
    • Myelin tetraspan family proteins but no non-tetraspan family proteins are present in the ascidian (Ciona intestinalis) genome 

      Gould, Robert M.; Morrison, Hilary G.; Gilland, Edwin; Campbell, Robert K. (Marine Biological Laboratory, 2005-08)
      Several of the proteins used to form and maintain myelin sheaths in the central nervous system (CNS) and the peripheral nervous system (PNS) are shared among different vertebrate classes. These proteins include one-to-several ...
    • Mylonitic deformation at the Kane oceanic core complex : implications for the rheological behavior of oceanic detachment faults 

      Hansen, Lars N.; Cheadle, Michael J.; John, Barbara E.; Swapp, Susan M.; Dick, Henry J. B.; Tucholke, Brian E.; Tivey, Maurice A. (John Wiley & Sons, 2013-08-28)
      The depth extent, strength, and composition of oceanic detachment faults remain poorly understood because the grade of deformation-related fabrics varies widely among sampled oceanic core complexes (OCCs). We address this ...
    • Myosin concentration underlies cell size–dependent scalability of actomyosin ring constriction 

      Calvert, Meredith E.K.; Wright, Graham D.; Leong, Fong Yew; Chiam, Keng-Hwee; Chen, Yinxiao; Jedd, Gregory; Balasubramanian, Mohan K. (Rockefeller University Press, 2011-11-28)
      In eukaryotes, cytokinesis is accomplished by an actomyosin-based contractile ring. Although in Caenorhabditis elegans embryos larger cells divide at a faster rate than smaller cells, it remains unknown whether a similar ...
    • Myosin II activity regulates vinculin recruitment to focal adhesions through FAK-mediated paxillin phosphorylation 

      Pasapera, Ana M.; Schneider, Ian C.; Rericha, Erin; Schlaepfer, David D.; Waterman, Clare M. (Rockefeller University Press, 2010-03-22)
      Focal adhesions (FAs) are mechanosensitive adhesion and signaling complexes that grow and change composition in response to myosin II–mediated cytoskeletal tension in a process known as FA maturation. To understand ...
    • Myosin5a tail associates directly with Rab3A-containing compartments in neurons 

      Wollert, Torsten; Patel, Anamika; Lee, Ying-Lung; Provance, D. William; Vought, Valarie E.; Cosgrove, Michael S.; Mercer, John A.; Langford, George M. (2011-02-21)
      Myosin-Va (Myo5a) is a motor protein associated with synaptic vesicles (SVs) but the mechanism by which it interacts has not yet been identified. A potential class of binding partners are Rab GTPases and Rab3A is ...
    • Mysid crustaceans as standard models for the screening and testing of endocrine-disrupting chemicals 

      Verslycke, Tim A.; Ghekiere, An; Raimondo, Sandy; Janssen, Colin R. (2006)
      Investigative efforts into the potential endocrine-disrupting effects of chemicals have mainly concentrated on vertebrates, with significantly less attention paid to understanding potential endocrine disruption in the ...
    • N budgets and aquatic uptake in the Ipswich River basin, northeastern Massachusetts 

      Williams, Michael; Hopkinson, Charles S.; Rastetter, Edward B.; Vallino, Joseph J. (American Geophysical Union, 2004-11-05)
      We calculated N budgets and conducted nutrient uptake experiments to evaluate the fate of N in the aquatic environment of the Ipswich River basin, northeastern Massachusetts. A mass balance indicates that the basin retains ...
    • N-15 in symbiotic fungi and plants estimates nitrogen and carbon flux rates in Arctic tundra 

      Hobbie, John E.; Hobbie, Erik A. (Ecological Society of America, 2006-04)
      When soil nitrogen is in short supply, most terrestrial plants form symbioses with fungi (mycorrhizae): hyphae take up soil nitrogen, transport it into plant roots, and receive plant sugars in return. In ecosystems, the ...
    • N-loss isotope effects in the Peru oxygen minimum zone studied using a mesoscale eddy as a natural tracer experiment 

      Bourbonnais, Annie; Altabet, Mark A.; Charoenpong, Chawalit N.; Larkum, Jennifer; Hu, Haibei; Bange, Hermann W.; Stramma, Lothar (John Wiley & Sons, 2015-06-06)
      Mesoscale eddies in Oxygen Minimum Zones (OMZs) have been identified as important fixed nitrogen (N) loss hotspots that may significantly impact both the global rate of N-loss as well as the ocean's N isotope budget. They ...
    • N2 fixation by subsurface populations of Trichodesmium : an important source of new nitrogen to the North Atlantic Ocean 

      Heithoff, Abigail (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2011-02)
      Trichodesmium, a genus of diazotrophic cyanobacteria, is an important contributor to the marine nitrogen (N) and carbon (C) cycles. The extent to which Trichodesmium dinitrogen (N2) fixation contributes to the marine N ...
    • N2 fixation in eddies of the eastern tropical South Pacific Ocean 

      Löscher, Carolin; Bourbonnais, Annie; Dekaezemacker, Julien; Charoenpong, Chawalit N.; Altabet, Mark A.; Bange, Hermann; Czeschel, Rena; Hoffmann, Chris; Schmitz, Ruth (Copernicus Publications on behalf of the European Geosciences Union, 2016-05-18)
      Mesoscale eddies play a major role in controlling ocean biogeochemistry. By impacting nutrient availability and water column ventilation, they are of critical importance for oceanic primary production. In the eastern ...
    • The N456 Navigator system 

      Abrams, Lane J. (Woods Hole Oceanographic Institution, 2009-01)
      The N456 Navigator has been developed to assist in Long Baseline (LBL) acoustic navigation. Its two basic functions are generation of acoustic signals, and receipt and timing of returns. When combined with the new dsnav ...
    • Na+ imaging reveals little difference in action potential–evoked Na+ influx between axon and soma 

      Fleidervish, Ilya A.; Lasser-Ross, Nechama; Gutnick, Michael J.; Ross, William N. (2010-05-09)
      In cortical pyramidal neurons, the axon initial segment (AIS) plays a pivotal role in synaptic integration. It has been asserted that this property reflects a high density of Na+ channels in AIS. However, we here report ...
    • Najas flexilis (Hydrocharitaceae) in Alaska : a reassessment 

      Les, Donald H.; Les, Angela M.; King, Ursula M.; Peredo, Elena L. (New England Botanical Club, 2015-09-23)
      Fifteen Najas flexilis collections were made in Alaska during the summer of 2012, with 13 of the stations representing either new or formerly undocumented localities for this imperiled Alaskan species. These field collections ...
    • Names are key to the big new biology 

      Patterson, David J.; Cooper, J.; Kirk, Paul M.; Pyle, R. L.; Remsen, David P. (2010-09-20)
      Those who seek answers to big, broad questions about biology, especially questions emphasizing the organism (taxonomy, evolution, ecology), will soon benefit from an emerging names-based infrastructure. It will draw on ...
    • Nansen-bottle stations at the Woods Hole Oceanographic Institution 

      Warren, Bruce A. (2007-09-28)
      Nansen-bottle stations were occupied by ships and personnel of the Woods Hole Oceanographic Institution from 1931 to about 1981. Most of these data are in archives, but using them intelligently to depict the state of the ...
    • Nantucket shoals flux experiment (NSFE79) : part 2, moored array data report 

      Beardsley, Robert C.; Alessi, Carol A.; Vermersch, John A.; Brown, W. Steven; Pettigrew, Neal R.; Irish, James D.; Ramp, Steven R.; Schlitz, Ronald J.; Butman, Bradford (Woods Hole Oceanographic Institution, 1983-11)
      The Nantucket Shoals Flux Experiment (NSFE79) was conducted across the continental shelf and upper slope south of Nantucket from March, 1979 to April , 1980 to measure the flow of shelf water from the Georges Bank/Gulf of ...
    • Narrative of Chain cruise #43 : February - August 1964 

      Knott, Sydney T.; Bunce, Elizabeth T.; Bowin, Carl O.; Hersey, J. B.; Chase, R. L. (Woods Hole Oceanographic Institution, 1965-02)
      On CHAIN Cruise 43, 15 February to 21 August 1964, geophysical and geological observations were made in the North Atlantic Ocean, the Mediterranean and Red Seas, and the Western part of the Indian Ocean, along the track ...