Now showing items 362-381 of 934

    • Harmonic analysis of the cone flicker ERG of rabbit 

      Qian, Haohua; Alexander, Kenneth R.; Ripps, Harris (Elsevier B.V., 2010-10-23)
      Harmonic analysis was used to characterize the rabbit flicker ERG elicited by sinusoidally modulated full-field stimuli under light-adapted conditions. The frequency-response function for fundamental amplitude, derived ...
    • Hemichannel composition and electrical synaptic transmission : molecular diversity and its implications for electrical rectification 

      Palacios-Prado, Nicolas; Huetteroth, Wolf; Pereda, Alberto E. (Frontiers Media, 2014-10-15)
      Unapposed hemichannels (HCs) formed by hexamers of gap junction proteins are now known to be involved in various cellular processes under both physiological and pathological conditions. On the other hand, less is known ...
    • Heterotrophic Archaea dominate sedimentary subsurface ecosystems off Peru 

      Biddle, Jennifer F.; Lipp, Julius S.; Lever, Mark A.; Lloyd, Karen G.; Sorensen, Ketil B.; Anderson, Rika E.; Fredricks, Helen F.; Elvert, Marcus; Kelly, Timothy J.; Schrag, Daniel P.; Sogin, Mitchell L.; Brenchley, Jean E.; Teske, Andreas; House, Christopher H.; Hinrichs, Kai-Uwe (National Academy of Sciences, 2006-02-27)
      Studies of deeply buried, sedimentary microbial communities and associated biogeochemical processes during Ocean Drilling Program Leg 201 showed elevated prokaryotic cell numbers in sediment layers where methane is consumed ...
    • Heterotrophic respiration in disturbed forests : a review with examples from North America 

      Harmon, Mark E.; Bond-Lamberty, Ben; Tang, Jianwu; Vargas, Rodrigo (American Geophysical Union, 2011-05-14)
      Heterotrophic respiration (RH) is a major process releasing carbon to the atmosphere and is essential to understanding carbon dynamics in terrestrial ecosystems. Here we review what is known about this flux as related to ...
    • High density and ligand affinity confer ultrasensitive signal detection by a guanylyl cyclase chemoreceptor 

      Pichlo, Magdalena; Bungert-Plumke, Stefanie; Weyand, Ingo; Seifert, Reinhard; Bonigk, Wolfgang; Strunker, Timo; Kashikar, Nachiket D.; Goodwin, Normann; Muller, Astrid; Pelzer, Patric; Van, Qui; Enderlein, Jorg; Klemm, Clementine; Krause, Eberhard; Trotschel, Christian; Poetsch, Ansgar; Kremmer, Elisabeth; Kaupp, U. Benjamin (Rockefeller University Press, 2014-08-18)
      Guanylyl cyclases (GCs), which synthesize the messenger cyclic guanosine 3′,5′-monophosphate, control several sensory functions, such as phototransduction, chemosensation, and thermosensation, in many species from worms ...
    • High particle export over the continental shelf of the west Antarctic Peninsula 

      Buesseler, Ken O.; McDonnell, Andrew M. P.; Schofield, Oscar M. E.; Steinberg, Deborah K.; Ducklow, Hugh W. (American Geophysical Union, 2010-11-24)
      Drifting cylindrical traps and the flux proxy 234Th indicate more than an order of magnitude higher sinking fluxes of particulate carbon and 234Th in January 2009 than measured by a time-series conical trap used regularly ...
    • Histidine suppresses zinc modulation of connexin hemichannels 

      Chappell, Richard L.; Qian, Haohua; Zakevicius, Jane; Ripps, Harris (Marine Biological Laboratory, 2004-12)
      Zinc has been shown to modulate hemichannel currents of connexins Cx35 and Cx38 in Xenopus oocytes. In both cases the effects were biphasic; i.e., low concentrations of zinc enhanced, whereas higher concentrations decreased, ...
    • Historical and idealized climate model experiments : an intercomparison of Earth system models of intermediate complexity 

      Eby, Michael; Weaver, Andrew J.; Alexander, K.; Zickfeld, K.; Abe-Ouchi, A.; Cimatoribus, A. A.; Crespin, E.; Drijfhout, S. S.; Edwards, N. R.; Eliseev, A. V.; Feulner, G.; Fichefet, T.; Forest, C. E.; Goosse, H.; Holden, P. B.; Joos, Fortunat; Kawamiya, M.; Kicklighter, David W.; Kienert, H.; Matsumoto, K.; Mokhov, I. I.; Monier, Erwan; Olsen, S. M.; Pedersen, J. O. P.; Perrette, M.; Philippon-Berthier, G.; Ridgwell, Andy; Schlosser, A.; Schneider von Deimling, T.; Shaffer, G.; Smith, R. S.; Spahni, R.; Sokolov, Andrei P.; Steinacher, M.; Tachiiri, K.; Tokos, K.; Yoshimori, M.; Zeng, Ning; Zhao, F. (Copernicus Publications on behalf of the European Geosciences Union, 2013-05-16)
      Both historical and idealized climate model experiments are performed with a variety of Earth system models of intermediate complexity (EMICs) as part of a community contribution to the Intergovernmental Panel on Climate ...
    • Historical carbon emissions and uptake from the agricultural frontier of the Brazilian Amazon 

      Galford, Gillian L.; Melillo, Jerry M.; Kicklighter, David W.; Mustard, John F.; Cronin, Timothy W.; Cerri, Carlos E. P.; Cerri, Carlos C. (Ecological Society of America, 2011-04)
      Tropical ecosystems play a large and complex role in the global carbon cycle. Clearing of natural ecosystems for agriculture leads to large pulses of CO2 to the atmosphere from terrestrial biomass. Concurrently, the remaining ...
    • Home site advantage in two long-lived arctic plant species : results from two 30-year reciprocal transplant studies 

      Bennington, Cynthia C.; Fetcher, Ned; Vavrek, Milan C.; Shaver, Gaius R.; Cummings, Kelli J.; McGraw, James B. (2012-03-30)
      Reciprocal transplant experiments designed to quantify genetic and environmental effects on phenotype are powerful tools for the study of local adaptation. For long-lived species, especially those in habitats with short ...
    • The homeodomain transcription factor Phox2 in the stellate ganglion of the squid Loligo pealei 

      Burbach, J. Peter H.; Hellemons, Anita J. C. G. M.; Grant, Philip; Pant, Harish C. (The Company of Biologists, 2015-06-26)
      Homeodomain transcription factors regulate development of embryos and cellular physiology in adult systems. Paired-type homeodomain genes constitute a subclass that has been particularly implicated in establishment of ...
    • Host susceptibility hypothesis for shell disease in American lobsters 

      Tlusty, Michael F.; Smolowitz, Roxanna M.; Halvorson, Harlyn O.; DeVito, Simone E. (American Fisheries Society, 2007-12-31)
      Epizootic shell disease (ESD) in American lobsters Homarus americanus is the bacterial degradation of the carapace resulting in extensive irregular, deep erosions. The disease is having a major impact on the health and ...
    • Host-symbiont stability and fast evolutionary rates in an ant-bacterium association : cospeciation of Camponotus species and their endosymbionts, Candidatus Blochmannia 

      Degnan, Patrick H.; Lazarus, Adam B.; Brock, Chad D.; Wernegreen, Jennifer J. (Taylor and Francis, 2004-02)
      Bacterial endosymbionts are widespread across several insect orders and are involved in interactions ranging from obligate mutualism to reproductive parasitism. Candidatus Blochmannia gen. nov. (Blochmannia) is an obligate ...
    • How is female mate choice affected by male competition? 

      Wong, Bob B. M.; Candolin, Ulrika (Cambridge Philosophical Society, 2005)
      The plethora of studies devoted to the topics of male competition and female mate choice belie the fact that their interaction remains poorly understood. Indeed, on the question of whether competition should help or hinder ...
    • How nontraditional model systems can save us 

      Gladfelter, Amy S. (American Society for Cell Biology, 2015-11-01)
      n this essay I would like to highlight how work in nontraditional model systems is an imperative for our society to prepare for problems we do not even know exist. I present examples of how discovery in nontraditional ...
    • Human high density lipoproteins are platforms for the assembly of multi-component innate immune complexes 

      Shiflett, April M.; Bishop, Joseph R.; Pahwa, Amit; Hajduk, Stephen L. (American Society for Biochemistry and Molecular Biology, 2005-07-26)
      Human innate immunity to non-pathogenic species of African trypanosomes is provided by human high density lipoprotein (HDL) particles. Here we show that native human HDLs containing haptoglobin-related protein (Hpr), ...
    • Humic acid interferes with species recognition in zebrafish (Danio rerio) 

      Fabian, Niora J.; Albright, Lindsey B.; Gerlach, Gabriele; Fisher, Heidi S.; Rosenthal, Gil G. (2007-10-01)
      Few studies have addressed how chemosensation may be impaired by chemical alterations of the environment and anthropogenic disturbance. Humic acid (HA) is a pervasive, naturally occurring organic derivative found in aquatic ...
    • Humpback whale populations share a core skin bacterial community : towards a health index for marine mammals? 

      Apprill, Amy; Robbins, Jooke; Eren, A. Murat; Pack, Adam A.; Reveillaud, Julie; Mattila, David K.; Moore, Michael J.; Niemeyer, Misty E.; Moore, Kathleen M. T.; Mincer, Tracy J. (Public Library of Science, 2014-03-26)
      Microbes are now well regarded for their important role in mammalian health. The microbiology of skin – a unique interface between the host and environment - is a major research focus in human health and skin disorders, ...
    • Hydrogen limitation and syntrophic growth among natural assemblages of thermophilic methanogens at deep-sea hydrothermal vents 

      Topcuoglu, Begum D.; Stewart, Lucy C.; Morrison, Hilary G.; Butterfield, David A.; Huber, Julie A.; Holden, James F. (Frontiers Media, 2016-08-05)
      Thermophilic methanogens are common autotrophs at hydrothermal vents, but their growth constraints and dependence on H2 syntrophy in situ are poorly understood. Between 2012 and 2015, methanogens and H2-producing heterotrophs ...
    • Hyperpolarization-activated currents and subthreshold resonance in granule cells of the olfactory bulb 

      Hu, Ruilong; Ferguson, Katie A.; Whiteus, Christina; Meijer, Dimphna H.; Araneda, Ricardo C. (Society for Neuroscience, 2016-10-27)
      An important contribution to neural circuit oscillatory dynamics is the ongoing activation and inactivation of hyperpolarization-activated currents (Ih). Network synchrony dynamics play an important role in the initial ...