Search
Now showing items 201-210 of 316
Evolutionary relationships of the Critically Endangered frog Ericabatrachus baleensis Largen, 1991 with notes on incorporating previously unsampled taxa into large-scale phylogenetic analyses
(BioMed Central, 2014-03-10)
Background: The phylogenetic relationships of many taxa remain poorly known because of a lack of appropriate data and/or analyses. Despite substantial recent advances, amphibian phylogeny remains poorly resolved in many ...
Photocatalyst size controls electron and energy transfer: Selectable E/Z isomer synthesis via C-F alkenylation
(Royal Society of Chemistry, 2016-07-21)
Photocatalytic alkene synthesis can involve electron and energy transfer processes. The structure of the photocatalyst can be used to control the rate of the energy transfer, providing a mechanistic handle over the two ...
Shiga toxin 2 overexpression in Escherichia coli O157:H7 strains associated with severe human disease
(Elsevier, 2011-12)
Variation in disease severity among Escherichia coli O157:H7 infections may result from differential expression of Shiga toxin 2 (Stx2). Eleven strains belonging to four prominent phylogenetic clades, including clade 8 ...
Modulating the fundamental inductive-capacitive resonance in asymmetric double-split ring terahertz metamaterials
(AIP Publishing, 2011-03-24)
We investigate resonant transmission of planar asymmetric metamaterials made from double split-ring resonators. As the symmetry of the unit cell resonator is broken by displacing the two gaps away from the center in opposite ...
Morphological and ecological divergence of Lilium and Nomocharis within the Hengduan Mountains and Qinghai-Tibetan Plateau may result from habitat specialization and hybridization
(BioMed Central, 2015-07-29)
Background: Several previous studies have shown that some morphologically distinctive, small genera of vascular plants that are endemic to the Qinghai-Tibetan Plateau and adjacent Hengduan Mountains appear to have unexpected ...
Evaluations of validity and reliability of a transtheoretical model for sedentary behavior among college students
(JCFCorp SG PTE LTD, 2015-09)
Objective: To evaluate the measurement properties of the Transtheoretical Model (TTM) questionnaire for sedentary behaviors among college students and to examine the validity and reliability of the developed TTM questionnaire. ...
Effect of wet curing duration on long-term performance of concrete in tidal zone of marine environment
(SpringerOpen, 2015-12)
A proper initial curing is a very simple and inexpensive alternative to improve concrete cover quality and accordingly extend the service life of reinforced concrete structures exposed to aggressive species. A current study ...
Prospective childhood risk factors for gang involvement among North American Indigenous adolescents
(SAGE Publications, 2016-10)
The purpose of the study was to examine prospective childhood risk factors for gang involvement across the course of adolescence among a large 8-year longitudinal sample of 646 Indigenous (i.e., American Indian and Canadian ...
High throughput assay for screening host restriction factors and antivirals targeting Influenza A virus
(Frontiers Media, 2016-06-03)
Influenza A virus (IAV) is a human respiratory pathogen that causes seasonal epidemics and occasional global pandemics with devastating levels of morbidity and mortality. Currently approved treatments against influenza are ...
Toward transduodenal diffuse optical tomography of proximal pancreas
(Optica Publishing Group, 2013-10-10)
We demonstrate the feasibility of diffuse optical tomography (DOT) of the proximal pancreas by using optical applicator channels deployed longitudinally along the exterior surface of a duodenoscope. As the duodenum that ...