Now showing items 375-394 of 987

    • Grand challenges in biodiversity informatics 

      Sarkar, Indra Neil (2007-01)
      The exponentially growing array of biological data has necessitated the development of a new information management domain, biodiversity informatics. It is one of the newest members of the ‘informatics’ sub-disciplines, ...
    • Green algal infection of American horseshoe crab (Limulus polyphemus) exoskeletal structures 

      Braverman, Hillary; Leibovitz, Louis; Lewbart, Gregory A. (2012-06)
      Degenerative lesions in the dorsum of the horseshoe crab (Limulus polyphemus) exoskeleton, eyes, arthrodial membrane, and base of the telson were documented in a population of wild caught laboratory animals. The disease ...
    • The green algal underground : evolutionary secrets of desert cells 

      Cardon, Zoe G.; Gray, Dennis W.; Lewis, Louise A. (American Institute of Biological Sciences, 2008-02)
      Microscopic, unicellular, free-living green algae are found in desert microbiotic crusts worldwide. Although morphologically simple, green algae in desert crusts have recently been found to be extraordinarily diverse, with ...
    • Greening China naturally 

      Cao, Shixiong; Sun, Ge; Zhang, Zhiqiang; Chen, Liding; Feng, Qi; Fu, Bojie; McNulty, Steve; Shankman, David; Tang, Jianwu; Wang, Yanhui; Wei, Xiaohua (2011-04)
      China leads the world in afforestation, and is one of the few countries whose forested area is increasing. However, this massive ‘‘greening’’ effort has been less effective than expected; afforestation has sometimes produced ...
    • GRIPseq data for S. Purpuratus 24 hpf 

      Tulin, Sarah; Barsi, Julius C.; Bocconcelli, Carlo; Smith, Joel (2015-01-19)
      This dataset is the result of a new method for identifying putative cis-regulatory elements genome wide, termed GRIPseq for Genome-wide Regulatory element Immunoprecipitation. Our protocol combines elements of chromatin ...
    • The gut microbiota of rural Papua New Guineans : composition, diversity patterns, and ecological processes 

      Martinez, Ines; Stegen, James C.; Maldonado-Gomez, Maria X.; Eren, A. Murat; Siba, Peter M.; Greenhill, Andrew R.; Walter, Jens (Cell Press, 2015-04-16)
      Although recent research revealed an impact of westernization on diversity and composition of the human gut microbiota, the exact consequences on metacommunity characteristics are insufficiently understood, and the underlying ...
    • 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 ...
    • HIV glycoprotein Gp120 impairs fast axonal transport by activating Tak1 signaling pathways 

      Berth, Sarah; Mesnard-Hoaglin, Nichole; Wang, Bin; Kim, Hajwa; Song, Yuyu; Sapar, Maria; Morfini, Gerardo A.; Brady, Scott T. (Sage, 2016-11-01)
      Sensory neuropathies are the most common neurological complication of HIV. Of these, distal sensory polyneuropathy (DSP) is directly caused by HIV infection and characterized by length-dependent axonal degeneration of ...
    • 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 ...