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Sökning: WFRF:(Sundqvist T)

  • Resultat 1-10 av 138
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  • Prager, Case M., et al. (författare)
  • Integrating natural gradients, experiments, and statistical modeling in a distributed network experiment : An example from the WaRM Network
  • 2022
  • Ingår i: Ecology and Evolution. - : John Wiley & Sons. - 2045-7758. ; 12:10
  • Tidskriftsartikel (refereegranskat)abstract
    • A growing body of work examines the direct and indirect effects of climate change on ecosystems, typically by using manipulative experiments at a single site or performing meta-analyses across many independent experiments. However, results from single-site studies tend to have limited generality. Although meta-analytic approaches can help overcome this by exploring trends across sites, the inherent limitations in combining disparate datasets from independent approaches remain a major challenge. In this paper, we present a globally distributed experimental network that can be used to disentangle the direct and indirect effects of climate change. We discuss how natural gradients, experimental approaches, and statistical techniques can be combined to best inform predictions about responses to climate change, and we present a globally distributed experiment that utilizes natural environmental gradients to better understand long-term community and ecosystem responses to environmental change. The warming and (species) removal in mountains (WaRM) network employs experimental warming and plant species removals at high- and low-elevation sites in a factorial design to examine the combined and relative effects of climatic warming and the loss of dominant species on community structure and ecosystem function, both above- and belowground. The experimental design of the network allows for increasingly common statistical approaches to further elucidate the direct and indirect effects of warming. We argue that combining ecological observations and experiments along gradients is a powerful approach to make stronger predictions of how ecosystems will function in a warming world as species are lost, or gained, in local communities.
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  • Schon, T, et al. (författare)
  • Local production of nitric oxide in patients with tuberculosis
  • 2004
  • Ingår i: The international journal of tuberculosis and lung disease : the official journal of the International Union against Tuberculosis and Lung Disease. - 1027-3719. ; 8:9, s. 1134-1137
  • Tidskriftsartikel (refereegranskat)
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  • Sundqvist, Bertil, et al. (författare)
  • Physical properties of pressure polymerized C60
  • 1996
  • Ingår i: Proceedings of the Symposium on Recent Advances in the Chemistry and Physics of Fullerenes and Related Materials. - Pennington, NJ : Electrochemical Society, Incorporated. - 1566771625 ; , s. 1014-1028
  • Konferensbidrag (refereegranskat)
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  • Talyzin, Alexandr, et al. (författare)
  • Reaction of hydrogen gas with C60 at elevated pressure and temperature: Hydrogenation and cage fragmentation.
  • 2006
  • Ingår i: Journal of Physical Chemistry A. - : American Chemical Society (ACS). - 1089-5639 .- 1520-5215. ; 110:27, s. 8528-34
  • Tidskriftsartikel (refereegranskat)abstract
    • Products of the reaction of C60 with H2 gas have been monitored by high-resolution atmospheric pressurephotoionization Fourier transform ion cyclotron resonance mass spectrometry (APPI FT-ICR MS), X-raydiffraction, and IR spectroscopy as a function of hydrogenation period. Samples were synthesized at 673 Kand 120 bar hydrogen pressure for hydrogenation periods between 300 and 5000 min, resulting in the formationof hydrofullerene mixtures with hydrogen content ranging from 1.6 to 5.3 wt %. Highly reduced C60Hx (x >36-40) and products of their fragmentation were identified in these samples by APPI FT-ICR MS. A sharpchange in structure was observed for samples with at least 5.0 wt % of hydrogen. Low-mass (300-500 Da)hydrogenation products not observed by prior field desorption (FD) FT-ICR MS were detected by APPIFT-ICR MS and their elemental compositions obtained for the first time. Synthetic and analytical fragmentationpathways are discussed.
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  • Tjellstrom, B, et al. (författare)
  • A Role for Bacteria in Celiac Disease?
  • 2016
  • Ingår i: Digestive diseases and sciences. - : Springer Science and Business Media LLC. - 1573-2568 .- 0163-2116. ; 61:7, s. 2140-2140
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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  • Resultat 1-10 av 138
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Sundqvist, E (13)
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Olsson, T (12)
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