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See detailLaser-induced-fluorescence lifetime measurements and relativistic Hartree-Fock oscillator strength calculations in singly ionized platinum
Quinet, Pascal ULg; Palmeri, P.; Fivet, V. et al

in Physical Review. A (2008), 77

Radiative lifetimes of eight odd-parity states of Pt II, in the energy range from 51 408 to 64 388 cm−1, have been measured by means of the time-resolved laser-induced-fluorescence technique. Free, singly ... [more ▼]

Radiative lifetimes of eight odd-parity states of Pt II, in the energy range from 51 408 to 64 388 cm−1, have been measured by means of the time-resolved laser-induced-fluorescence technique. Free, singly ionized platinum ions were obtained in a laser-produced plasma and a tunable laser with 1.5 ns duration pulse was used to selectively excite the Pt+ ions. The comparison of the experimental results with relativistic Hartree-Fock calculations emphasizes the importance of valence-valence correlation and of core-polarization effects in this complex ion. A new and extensive set of calculated oscillator strengths and transition probabilities is reported in the present paper. [less ▲]

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See detailLaser-probing measurements and calculations of lifetimes of the 5d D-2(3/2) and 5d D-2(5/2) metastable levels in BaII
Gurell, J.; Biémont, Emile ULg; Blagoev, K. et al

in Physical Review A (2007), 75(5), 1-6

The two metastable levels 5d(2)D(3/2) and 5d(2) D-5/2 in Ba II both show extremely long lifetimes of the order of several tens of seconds each. This has been found both by experiments and by theoretical ... [more ▼]

The two metastable levels 5d(2)D(3/2) and 5d(2) D-5/2 in Ba II both show extremely long lifetimes of the order of several tens of seconds each. This has been found both by experiments and by theoretical predictions. The small transition probabilities associated with these two levels make them interesting and challenging for theoreticians as well as for experimentalists. Several calculations and measurements of these two lifetimes have been made previously but discrepancies between the results are present. This article presents values of ??? = 89.4 +/- 15.6 s for the D-2(3/2) level and ??? = 32.0 +/- 4.6 s for the D-2(5/2) level measured in a beam-laser experiment performed at the ion storage ring CRYRING. These values are supported by our new calculations resulting in ???= 82.0 s for the D-2(3/2) level and ???= 31.6 s for the D-2(5/2) level. [less ▲]

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See detailLasers excimères: applications au micro-usinage
Gailly, Patrick ULg

Conference given outside the academic context (2006)

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See detailLasfe (CIL IV 2319 l) et quelques autres exemples d’usage abusif de l’épigraphie en phonétique historique
Purnelle, Gérald ULg

in Etudes Classiques (Namur, Belgium) (1993), 61

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See detailLASH: laparoscopic supracervical (subtotal) hysterectomy
Donnez, Jacques; Smets, Mireille; Polet, Roland et al

in Zentralblatt für Gynakologie (1995), 117(12), 629-32

From July 1990 to December 1993, 156 laparoscopic supracervical hysterectomies (LASH) were performed. No complications occurred. The technique and the advantages are described. Because of the easy ... [more ▼]

From July 1990 to December 1993, 156 laparoscopic supracervical hysterectomies (LASH) were performed. No complications occurred. The technique and the advantages are described. Because of the easy feasibility of this technique, the quick recovery of the patients and the absence of complications this strictly laparoscopic approach must be widely proposed when an hysterectomy is indicated and no risk of remaining cervix cancer is assumed. [less ▲]

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See detailLasioloma stephanellum comb. nov. (Lichenized Ascomycetes: Ectolechiaceae)
Lücking, Robert; Sérusiaux, Emmanuël ULg

in Mycotaxon (2001), 57

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See detailLASLA - Nouveau manuel de lemmatisation du latin
Philippart de Foy, Caroline ULg

Learning material (2014)

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See detail«Lasse inedite della chanson de geste de Foucon de Candie»
Moreno, Paola ULg

in Medioevo Romanzo (1990), XV

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See detailLässig, exklusiv und nicht political correct: Pop, Comment und Dandytum bei Rainald Goetz
Pontzen, Alexandra ULg

in Tacke, Alexandra; Weyand, Björn (Eds.) Depressive Dandys. Spielformen der Dekadenz in der Pop-Moderne. (2008)

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See detailA lasso penalization approach to differential item functioning
Magis, David ULg

Conference (2014, November 24)

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See detailThe last 1,000 years in the Northern Congo Basin
Morin, Julie ULg; Fayolle, Adeline ULg; Favier, Charly et al

Conference (2015, November)

Review of the events that happened in the northern Congo basin during the last 1,000 yr. Positive impact of human disturbances on the regeneration of light-demanding trees. Negative impact of the European ... [more ▼]

Review of the events that happened in the northern Congo basin during the last 1,000 yr. Positive impact of human disturbances on the regeneration of light-demanding trees. Negative impact of the European colonization and following events on human populations and tree regeneration. [less ▲]

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See detailLast century Greenland ice sheet surface mass balance projections from IPCC AR4 global models
Franco, Bruno ULg; Fettweis, Xavier ULg; Erpicum, Michel ULg

Poster (2008, April)

Results from atmosphere-ocean general circulation models (AOGCM's) for the IPCC 4th Assessment Report are used to investigate surface mass balance (SMB) future projections of the Greenland ice sheet (GrIS ... [more ▼]

Results from atmosphere-ocean general circulation models (AOGCM's) for the IPCC 4th Assessment Report are used to investigate surface mass balance (SMB) future projections of the Greenland ice sheet (GrIS). The most efficient models for the GrIS climate modeling are chosen by comparison between the 1970-1999 outputs (averages and trends) from the 20C3M Experiment outputs, and the reanalyses (ECMWF, NCEP) as well as climatologies. The SMB is estimated from the summer temperature (from which is deduced the run-off) and annual snowfall from the well-adapted AOGCM's. It is validated with 1970-1999 results from the regional climate model MAR by interpolating the AOGCM's outputs on the MAR grid. However, large uncertainties remain in these SMB projections due to the simplified physic and coarse AOGCM's resolution. High resolution simulations made with the MAR model (which simulates explicitly the SMB by taking into account the surface feedbacks) forced at its boundaries by a GrIS well-adapted AOGCM could bring more precise brief replies. [less ▲]

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See detailLast Flight to Byzantium: Memoirs of Many in One
Maes-Jelinek, Hena ULg

in Australian Literary Studies (1991), 15(2), 173-183

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See detailThe last four glacial cycles simulated with the CLIMBER-2 model
Ganopolski, Andrey; Brovkin, Victor; Calov, Reinhard et al

Conference (2015, March 19)

We present results from our simulation experiments for the last four glacial cycles with the Earth System Model of Intermediate Complexity (EMIC) CLIMBER-2, with fully coupled ice-sheet and carbon cycle ... [more ▼]

We present results from our simulation experiments for the last four glacial cycles with the Earth System Model of Intermediate Complexity (EMIC) CLIMBER-2, with fully coupled ice-sheet and carbon cycle components. [less ▲]

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See detailThe last millenia sedimentary record of Lago Esponja from Northern Chilean Patagonia
Fagel, Nathalie ULg; Alvarez, Denisse; Araneda, Alberto et al

Poster (2016, April 20)

We evaluate the climate and environmental variability of Northern Chilean Patagonia during the Last Millennia, using a multi-proxy analysis of a sediment core from Lago Esponja (45°09’S, 72°08’W). The ... [more ▼]

We evaluate the climate and environmental variability of Northern Chilean Patagonia during the Last Millennia, using a multi-proxy analysis of a sediment core from Lago Esponja (45°09’S, 72°08’W). The lake is located in the region of Aysen del General Carlos Ibanez del Campo, in NW Patagonia. The study focuses on a multiproxy analysis of sedimentary records. The longest core (150 cm long) was collected in 2014 at 40 m depth. The sediment, which is composed of light brown organic-rich clayey silt, was analyzed for sedimentology (grain size, magnetic susceptibility organic matter and biogenic silica content), mineralogy (X-ray diffraction) and geochemistry (elemental and isotopic analyses of C and N, XRF core-scaner at 1 mm resolution). The radiocarbon ages, measured on 3 macro-remains, demonstrate that the core covers the last 6.700 years. The sedimentation rate ranges between 0.1 mm/yr in the lower section (100-150 cm) and 0.4 mm/yr in the upper meter. Visual descriptions and Scopix radiographies show that the sediment record is finely laminated except a massive decimetric coarser and darker layer corresponding to a tephra (estimated age 700AD±50). Magnetic susceptibility (confirmed by scopix radiographies) highlights the presence of 8 additional millimetric tephra layers. The biogenic silica content of the sediment is low (mean 5%). Diatom assemblage is dominated by benthic and acidophilous species, with high saprobic values. None marked changes were observed regarding the dynamic of the lake. The high organic matter content (mean 15%) and its high C/N ratio (12.7) throughout the core indicate inputs of allochtonous and terrestrial organic matter. Such parameters present high sediment variability also marked by changes in the chemical composition. The laminations reflect changes in the allochtonous sedimentary inputs, with high terrestrial inputs during wetter conditions in relation with the Westerlies. The sedimentary records of Lago Esponja will be compared with Eastern lacustrine record from the same latitude in order to confirm the climate-driven record. [less ▲]

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See detailLast millenium environmental changes in Lake Bertrand sediments, Chilean Patagonia
Sacré, Vincent ULg; Fagel, Nathalie ULg; Schmidt, Sabine et al

Poster (2012, April 23)

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See detailLast millennium gravity reworking processes in the western Gulf of Corinth: correlations with historical seismicity and indication of earthquake clusters
Beckers, Arnaud; Beck, Christian; Hubert, Aurelia ULg et al

in Geophysical Research Abstracts (2016), 18

The western tip of the Corinth Rift is considered as the most active within this major extensional structure, as evidenced by: seismicity, GPS kinematics, and INSAR data (Bernard et al., 2006). Within the ... [more ▼]

The western tip of the Corinth Rift is considered as the most active within this major extensional structure, as evidenced by: seismicity, GPS kinematics, and INSAR data (Bernard et al., 2006). Within the frame of a multidisciplinary project dedicated to seismic hazards assessment for this region, two offshore surveys - high resolution seismic reflection and gravity coring - were conducted in this area. They were dedicated to the Late Quaternary sedimentary fill as the latter was expected to record both long term deformation (Beckers et al., 2015) and sedimentary “events” related to major earthquakes and/or tsunamis. Seismic reflection imaging displays the time and geographical distributions of large submarine landslides (MTDs) during the last 100 kyr. Based on a morpho-sedimentary map and the active fault pattern, up to 2 m-long cores were selected to detect and characterise the possible impact of historical events. The chronological control is based on AMS 14C dating and four detailed 210Pb and 137Cs profiles. Sedimentation (components, sources, transport and settling mechanisms) was analysed through textural, chemical, and mineralogical parameters. Turbidites could be clearly separated from the hemipelagic deposits. Our attempt to correlate identified sedimentary “events” with historical data greatly benefited from a recently elaborated catalog (Albini et al., 2014) with precisely re-located epicentral areas. Cable breaks were also taken into account. Attenuation models (Papazachos & Papaioannou’s, 1997) were used to discuss paleo-intensities vs. distance form epicentral areas. From the whole set of cores, the following results may be underlined: - the correlations between cores from the different sites are not complete, including for a few neighbouring sites belonging to the same morpho-sedimentary unit; we relate these discrepancies to the complex bottom morphology and/or to bottom currents responsible for local erosion; - for several well-documented earthquakes and tsunamis, we could not find a clearly recorded sedimentary impact; - non earthquake-triggered MTDs (as the 1963 event) produced specific layers identical to the major earthquakes impacts. At the difference, for a few cores from the deep axial floor, several sandy or silty turbidites permit to establish correlations: i) between coring sites, ii) with earthquakes which stroke two different areas, respectively east and west of the concerned part of the Gulf. Furthermore, the sedimentary events show a particular time distribution for the last 600 yr: - two intervals with short recurrences: a recent one ( 1900 AD-Present or 1750 AD-Present) and an older one ( 1550 AD-1700 AD or 1450 AD-1800 AD); these time distributions differ from each coring site; - a long “quiet” period (150 to 200 yr). From these results, we tentatively consider this sedimentary record as an indicator of a migration of seismogenic faulting activity. Ref.: Albini, P., et al., 2014. Techn. Rep. I.N.G.V. Roma. Beckers, A., et al., 2015. Marine Geology, 360:55–69 Bernard, P., et al., 2006. Tectonophysics, 426:7-30. Papazachos, C., Papaioannou, C., 1997. Journal of Seismology, 1:181-201. [less ▲]

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See detailThe last Neandertals and the Middle to Upper Paleolithic transition in Europe
Flas, Damien ULg

Scientific conference (2014, April 28)

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