In: Macromolecules, 2009, vol. 42, no. 16, p. 6225–6230
We report on the use of hydrostatic pressure, P, to deswell thermosensitive poly(N-isopropylacrylamide) (pNIPAM) microgels and show that it can affect the polymer−solvent mixing as much as temperature, which is the traditional variable used to deswell pNIPAM particles. Interestingly, the microgel volume changes more gradually with pressure than it does with temperature. By comparing the...
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In: Physical Review, 2009, vol. 79, no. 5, p. 051403
We present a neutron-scattering investigation of the crystal structure formed by pH-sensitive poly(2-vinylpyridine) microgel particles with 5 wt % of cross-linker. We focus on highly swollen particles and explore concentrations ranging from below close packing to well above close packing, where the particles are forced to shrink and/or interpenetrate. The crystal structure is found to be random...
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In: Geologica Carpathica, 2009, vol. 60, no. 5, p. 419-430
Three new miliolid taxa from Bessarabian sediments from Georgia (Eastern Paratethys) are described following the classification of Łuczkowska (1972), which has never been used before by ex-Soviet micropaleontologists. They are: Varidentella luczkowskae; Varidentella reussi (Bogdanowicz) subsp. costulata; and Affinetrina voloshinovae (Bogdanowicz) subsp. eldarica. This classification takes into...
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In: Molecular Ecology, 2009, vol. 18, no. 7, p. 3629 - 3638
The two species of the palm genus Howea (Arecaceae) from Lord Howe Island, a minute volcanic island in the Tasman Sea, are now regarded as one of the most compelling examples of sympatric speciation, although this view is still disputed by some authors. Population genetic and ecological data are necessary to provide a more coherent and comprehensive understanding of this emerging model system....
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In: Dynamic food webs: multispecies assemblages, ecosystem development, and environmental change, 2005, p. 425-436
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In: SEPM Core Workshop 22, 2008, p. 211-213
Preliminary geological investigations on Providenciales (Caicos) and Mayaguana (Bahamas) show disparities between the two islands, possibly related to differences in the area of emerged land on platform tops.The Mayaguana and Caicos platforms are located in the SE Bahamas. Caicos is a large (100x70 km) edifice supporting small islands along its northern margin. Mayaguana is smaller (55x15 km)...
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In: Tectonophysics, 2006, vol. 428, no. 1-4, p. 65-85
We present a petrophysical analysis of upper mantle xenoliths, collected in the Quaternary alkali basalt fields (Series III and IV) from the island of Lanzarote. The samples consist of eight harzburgite and four dunite nodules, 5 to 15 cm in size, and exhibit a typical protogranular to porphyroclastic texture. An anomalous foliation resulting from strong recovery processes is observed in half of...
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In: Aging Cell, 2007, vol. 6, no. 1, p. 63–71.
Dietary restriction (DR) extends lifespan in an impressively wide array of species spanning three eukaryotic kingdoms. In sharp contrast, relatively little is known about the effects of DR on functional senescence, with most of the work having been done on mice and rats. Here we used Drosophila melanogaster to test the assumption that lifespan extension through DR slows down age-related...
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Thèse de doctorat : Université de Fribourg, 2004.
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This article reports on a study investigating websites and brochures for wineries and wine regions in Australia and New Zealand. It is part of a wider study1 investigating written texts and intercultural interactions, mainly in English, with data originating in the food and wine industry in different countries, including Italy, the U.S., Australia, and New Zealand. The present article focuses on...
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