Now showing items 256-275 of 980

    • EGenBio : a data management system for evolutionary genomics and biodiversity 

      Nahum, Laila A.; Reynolds, Matthew T.; Wang, Zhengyuan O.; Faith, Jeremiah J.; Jonna, Rahul; Jiang, Zhi J.; Meyer, Thomas J.; Pollock, David D. (BioMed Central, 2006-09-26)
      EGenBio is a system for manipulation and filtering of large numbers of sequences, integrating curated sequence alignments and phylogenetic trees, managing evolutionary analyses, and visualizing their output. EGenBio is ...
    • Electrokinetic measurements of membrane capacitance and conductance for pancreatic β-cells 

      Pethig, Ronald; Jakubek, L. M.; Sanger, R. H.; Heart, E.; Corson, Erica D.; Smith, Peter J. S. (2005-10-31)
      Membrane capacitance and membrane conductance values are reported for insulin secreting cells (primary β-cells and INS-1 insulinoma cells) determined using the methods of dielectrophoresis and electrorotation. The membrane ...
    • Embryos, microscopes, and society 

      Maienschein, Jane (Elsevier, 2016-03-17)
      Embryos have different meanings for different people and in different contexts. Seen under the microscope, the biological embryo starts out as one cell and then becomes a bunch of cells. Gradually these divide and differentiate ...
    • Emerging opportunities and challenges in phenology : a review 

      Tang, Jianwu; Körner, Christian; muraoka, hiroyuki; Piao, Shilong; Shen, Miaogen; Thackeray, Stephen; Yang, Xi (John Wiley & Sons, 2016-08-18)
      Plant phenology research has gained increasing attention because of the sensitivity of phenology to climate change and its consequences for ecosystem function. Recent technological development has made it possible to gather ...
    • Employing BAC-reporter constructs in the sea anemone Nematostella vectensis 

      Fischer, Antje H. L.; Tulin, Sarah; Fredman, David; Smith, Joel (2013-07-05)
      Changes in the expression and function of genes drive evolutionary change. Comparing how genes are regulated in different species is therefore becoming an important part of evo-devo studies. A key tool for investigating ...
    • Ena/VASP proteins have an anti-capping independent function in filopodia formation 

      Applewhite, Derek A.; Barzik, Melanie; Kojima, Shin-ichiro; Svitkina, Tatyana M.; Gertler, Frank B.; Borisy, Gary G. (American Society for Cell Biology, 2007-05-02)
      Filopodia have been implicated in a number of diverse cellular processes including growth-cone path finding, wound healing, and metastasis. The Ena/VASP family of proteins has emerged as key to filopodia formation but the ...
    • The Encyclopedia of Life, Biodiversity Heritage Library, biodiversity informatics and beyond Web 2.0 

      Norton, Cathy N. (Great Cities Initiative of the University of Illinois at Chicago Library, 2008-08-04)
      E.O. Wilson, the noted entomologist at Harvard, "wished" for an authoritative encyclopedia of life that would be freely available on the worldwide web for the entire world. On 9 May 2007, The Encyclopedia of Life (EOL) was ...
    • Endocrine-disrupting alkylphenols are widespread in the blood of lobsters from southern New England and adjacent offshore areas 

      Jacobs, Molly W.; Laufer, Hans; Stuart, James; Chen, Ming; Pan, Xuejun (National Shellfisheries Association, 2012-06)
      Endocrine-disrupting pollutants in rivers and oceans represent a poorly understood but potentially serious threat to the integrity of aquatic and coastal ecosystems. We surveyed the hemolymph of lobsters from across southern ...
    • Endonuclease-containing Penelope retrotransposons in the bdelloid rotifer Adineta vaga exhibit unusual structural features and play a role in expansion of host gene families 

      Arkhipova, Irina R.; Yushenova, Irina A.; Rodriguez, Fernando (BioMed Central, 2013-08-27)
      Penelope-like elements (PLEs) are an enigmatic group of retroelements sharing a common ancestor with telomerase reverse transcriptases. In our previous studies, we identified endonuclease-deficient PLEs that are associated ...
    • Endoplasmic reticulum targeted GFP reveals ER organization in tobacco NT-1 cells during cell division 

      Gupton, S. L.; Collings, D. A.; Allen, N. S. (2005-11-07)
      The endoplasmic reticulum (ER) of plant cells undergoes a drastic reorganization during cell division. In tobacco NT-1 cells that stably express a GFP construct targeted to the ER, we have mapped the reorganization of ...
    • Endosymbiosis : lessons in conflict resolution 

      Wernegreen, Jennifer J. (Public Library of Science (PLoS), 2004-03-16)
      Symbiosis, an interdependent relationship between two species, is an important driver of evolutionary novelty and ecological diversity. Microbial symbionts in particular have been major evolutionary catalysts throughout ...
    • Enhancement of nitrate removal at the sediment-water interface by carbon addition plus vertical mixing 

      Chen, Xuechu; He, Shengbing; Zhang, Yueping; Huang, Xiaobo; Huang, Yingying; Chen, Danyue; Huang, Xiaochen; Tang, Jianwu (2014-12)
      Wetlands and ponds are frequently used to remove nitrate from effluents or runoffs. However, the efficiency of this approach is limited. Based on the assumption that introducing vertical mixing to water column plus carbon ...
    • Entropy-driven formation of a chiral liquid-crystalline phase of helical filaments 

      Barry, Edward; Hensel, Zach; Dogic, Zvonimir; Shribak, Michael; Oldenbourg, Rudolf (American Physical Society, 2006-01-11)
      We study the liquid-crystalline phase behavior of a concentrated suspension of helical flagella isolated from Salmonella typhimurium. Flagella are prepared with different polymorphic states, some of which have a pronounced ...
    • Envelope structure of Synechococcus sp. WH8113, a nonflagellated swimming cyanobacterium 

      Samuel, Aravinthan D. T.; Petersen, Jennifer D.; Reese, Thomas S. (BioMed Central, 2001-04-24)
      Many bacteria swim by rotating helical flagellar filaments. Waterbury et al. discovered an exception, strains of the cyanobacterium Synechococcus that swim without flagella or visible changes in shape. Other species of ...
    • Environmental distribution and persistence of Quahog Parasite Unknown (QPX) 

      Gast, Rebecca J.; Moran, Dawn M.; Audemard, Corinne; Lyons, M. Maille; DeFaveri, Jacquelin; Reece, Kimberly S.; Leavitt, Dale F.; Smolowitz, Roxanna M. (Inter-Research, 2008-09-24)
      Quahog Parasite Unknown (QPX) is the cause of mass mortality events of hard clams Mercenaria mercenaria from Virginia, USA, to New Brunswick, Canada. Aquaculture areas in Massachusetts, USA, have been particularly hard ...
    • The environmental toxicant 2,3,7,8-tetrachlorodibenzo-p-dioxin disrupts morphogenesis of the rat pre-implantation embryo 

      Hutt, Karla J.; Shi, Zhanquan; Albertini, David F.; Petroff, Brian K. (BioMed Central, 2008-01-02)
      Environmental toxicants, whose actions are often mediated through the aryl hydrocarbon receptor (AhR) pathway, pose risks to the health and well-being of exposed species, including humans. Of particular concern are exposures ...
    • ENVIRONMENTS and EOL : identification of Environment Ontology terms in text and the annotation of the Encyclopedia of Life 

      Pafilis, Evangelos; Frankild, Sune P.; Schnetzer, Julia; Fanini, Lucia; Faulwetter, Sarah; Pavloudi, Christina; Vasileiadou, Katerina; Leary, Patrick R.; Hammock, Jennifer; Schulz, Katja S.; Parr, Cynthia Sims; Arvanitidis, Christos; Jensen, Lars Juhl (Oxford University Press, 2015-01-24)
      The association of organisms to their environments is a key issue in exploring biodiversity patterns. This knowledge has traditionally been scattered, but textual descriptions of taxa and their habitats are now being ...
    • Envisioning a marine biodiversity observation network 

      Duffy, J. Emmett; Amaral-Zettler, Linda A.; Fautin, Daphne G.; Paulay, Gustav; Rynearson, Tatiana A.; Sosik, Heidi M.; Stachowicz, John J. (University of California Press, 2013-05)
      Humans depend on diverse ocean ecosystems for food, jobs, and sustained well-being, yet many stressors threaten marine life. Extensive research has demonstrated that maintaining biodiversity promotes ocean health and service ...
    • Envisioning the future of science libraries at academic research institutions : a discussion 

      Feltes, Carol; Gibson, Donna S.; Miller, Holly; Norton, Cathy N.; Pollock, Ludmila (2012-12-20)
      A group of librarians, other information professionals, scientists and research administrators met to discuss the challenges that research libraries are currently facing. After the meeting a survey was conducted to obtain ...
    • Epigenetic regulation during mammalian oogenesis 

      Bromfield, John; Messamore, Will; Albertini, David F. (2007-09-25)
      The advent of the epigenetic era has sparked a new frontier in molecular research and the understanding of how development can be regulated beyond direct alterations of the genome. Thus far, the focal point of epigenetic ...