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See detailNorthern and southern hemisphere ground-based infrared spectroscopic measurements of tropospheric carbon monoxide and ethane
Rinsland, C. P.; Jones, N. B.; Connor, B. J. et al

in Journal Of Geophysical Research. Atmospheres (1998), 103(D21), 28197-28217

Time series of CO and C2H6 measurements have been derived from high-resolution infrared solar spectra recorded in Lauder, New Zealand (45.0 degrees S, 169.7 degrees E, altitude 0.37 km), and at the U.S ... [more ▼]

Time series of CO and C2H6 measurements have been derived from high-resolution infrared solar spectra recorded in Lauder, New Zealand (45.0 degrees S, 169.7 degrees E, altitude 0.37 km), and at the U.S. National Solar Observatory (31.9 degrees N, 111.6 degrees W, altitude 2.09 km) on Kitt Peak. Lauder observations were obtained between July 1993 and November 1997, while the Kitt Peak measurements were recorded between May 1977 and December 1997. Both databases were analyzed with spectroscopic parameters that included significant improvements for C2H6 relative to previous studies. Target CO and C2H6 lines were selected to achieve similar vertical samplings based on averaging kernels. These calculations show that partial columns from layers extending from the surface to the mean tropopause and from the mean tropopause to 100 km are nearly independent. Retrievals based on a semiempirical application of the Rodgers optimal estimation technique are reported for the lower laver, which has a broad maximum in sensitivity in the upper troposphere. The Lauder CO and C2H6 partial columns exhibit highly asymmetrical seasonal cycles with minima in austral autumn and sharp peaks in austral spring. The spring maxima are the result of tropical biomass burning emissions followed by deep convective vertical transport to the upper troposphere and long-range horizontal transport. Significant year-to-year variations are observed for both CO and C2H6, but the measured trends, (+0.37 +/- 0.57)% yr(-1) and (-0.64 +/- 0.79)% yr(-1), 1 sigma, respectively, indicate no significant long-term changes. The Kitt Peak data also exhibit CO and C2H6 seasonal variations in the lower layer with trends equal to (-0.27 +/- 0.17)% yr(-1) and (-1.20 +/- 0.35')% yr(-1), 1 sigma, respectively. Hence a decrease in the Kitt Peak tropospheric C2H6 column has been detected, though the CO trend is not significant. Both measurement sets are compared with previous observations, reported trends, and three-dimensional model calculations. [less ▲]

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See detailNorthern Europe: Middle to Upper Paleolithic Transition
Flas, Damien ULg

in Smith, Claire (Ed.) Encyclopedia of Global Archaeology (2014)

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See detailNorthern Ghana elephant survey
Bouché, Philippe ULg

in Pachyderm (2007), 42

Northern Ghana shelters an important protected areas network. However, the current elephant range is restricted to a few protected areas. An aerial total count was carried out in Mole National Park and ... [more ▼]

Northern Ghana shelters an important protected areas network. However, the current elephant range is restricted to a few protected areas. An aerial total count was carried out in Mole National Park and partially in Gbele Resource Reserve. The eastern and western corridors were surveyed by direct and indirect distance sampling counts. A minimum of 401 elephants were observed in Mole National Park while 15 elephants (coefficient of variation: 87%) were estimated by dung count in the extreme north of the western corridor. No elephant <br />sign was observed in the other areas surveyed. Human activities were widely spread in all areas except Mole National Park, where permanent human activities, fields and villages were outside the boundaries. Because of high human impact, elephant migration is now essentially non-existent in both corridors. The recent records of elephant in Gbele Resource Reserve make a case for a third corridor between Mole National Park and Bontioli in Burkina Faso through Gbele Resource Reserve. [less ▲]

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See detailA northern glacial refugium for bank voles (Clethrionomys glareolus).
Kotlìk, Petr; Deffontaine Deurbroeck, Valérie ULg; Mascheretti, Silvia et al

in Proceedings of the National Academy of Sciences of the United States of America (2006), 103(40), 14860-14864

There is controversy and uncertainty on how far north there were glacial refugia for temperate species during the Pleistocene glaciations and in the extent of the contribution of such refugia to present ... [more ▼]

There is controversy and uncertainty on how far north there were glacial refugia for temperate species during the Pleistocene glaciations and in the extent of the contribution of such refugia to present-day populations. We examined these issues using phylogeographic analysis of a European woodland mammal, the bank vole (Clethrionomys glareolus). A Bayesian coalescence analysis indicates that a bank vole population survived the height of the last glaciation (≈25,000–10,000 years B.P.) in the vicinity of the Carpathians, a major central European mountain chain well north of the Mediterranean areas typically regarded as glacial refugia for temperate species. Parameter estimates from the fitted isolation with migration model show that the divergence of the Carpathian population started at least 22,000 years ago, and it was likely followed by only negligible immigration from adjacent regions, suggesting the persistence of bank voles in the Carpathians through the height of the last glaciation. On the contrary, there is clear evidence for gene flow out of the Carpathians, demonstrating the contribution of the Carpathian population to the colonization of Europe after the Pleistocene. These findings are consistent with data from animal and plant fossils recovered in the Carpathians and provide the clearest phylogeographic evidence to date of a northern glacial refugium for temperate species in Europe. [less ▲]

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See detailNos élèves préfèrent Pythagore à Newton
Monseur, Christian ULg

in Pilotinfo (1997), 20(septembre),

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See detailNos grandes cultures captent aussi le CO2
Bodson, Bernard ULg; Moureaux, Christine ULg; Aubinet, Marc ULg

in Nouvelles du Printemps (Les) (2007), (2ème trimestre 2007), 30-31

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See detailNos plans d’eau n’y échappent pas : les plantes amphibies invasives…
Delbart, Emmanuel ULg; Mahy, Grégory ULg

Article for general public (2011)

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See detailNos postes de garde en Médecine Générale, pour qui ? et pourquoi ?
Burette, Philippe ULg

Conference (2010, February 07)

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See detailNos sensations dans leurs rapports avec le monde extérieur
Fredericq, Henri ULg

Speech/Talk (1948)

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See detailNos sensations et le monde extérieur
Fredericq, Léon ULg

in Scientia (1927), XLI

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See detailNos sensations et le monde extérieur
Fredericq, Léon ULg

in Archives Internationales de Physiologie (1921)

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See detailNos terrils : leur vraie nature
Delcourt, Johann ULg; Hauteclair, Pascal

Book published by Weyrich Editions (2011)

Yesterday considered as scars from a painful past, nowedays slag heaps are largely adopted in the heart of people. Being an accumutation of steriles in the past, they are become a stock of biodiversity in ... [more ▼]

Yesterday considered as scars from a painful past, nowedays slag heaps are largely adopted in the heart of people. Being an accumutation of steriles in the past, they are become a stock of biodiversity in an affected environment by the Man and global climate changes. However, slag heaps (or spoil tips) own a unknown richness for all a serie of point of view. This book is an invitation to discover the treasures of these mini mountains born from the Man's hands. [this book is written in French] [less ▲]

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See detailNos Virtuoses. Chants d’oiseaux
Metzmacher, Maxime ULg; Charron, François; Verhaegen, Jean-Pierre

Learning material (1993)

CD of birdsong in our regions (15 species) with booklet. Google Traduction pour les entreprises :Google Kit du traducteurGadget TraductionOutil d'aide à l'export

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See detailNose and Sleep Breathing Disorders
POIRRIER, Anne-Lise ULg; Eloy, P.; Rombaux, P.

in Onerci, M. (Ed.) Nasal Physiology and Pathophysiology of Nasal Disorders (2013)

Detailed reference viewed: 8 (1 ULg)
See detailNosferatu Tango
Tomasovic, Dick ULg

in APCVL (Ed.) Lycéens au cinéma en Région Centre - 2002 (2002)

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See detail+Nosse ma-tante, +nosse ma-seûr et toute la famille
Baiwir, Esther ULg

in Wallonnes : Chronique de la Société de Langue et de Littérature Wallonnes (2007), 3

Detailed reference viewed: 8 (2 ULg)