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Peer Reviewed
See detailThe complex injuries produced by percutaneous injection of fluids under very high pressure
Beaujean, M.; Thiry, A.; RADERMECKER, Régis ULg

Poster (2001, June 23)

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See detailThe complex injuries produced by percutaneous injection of fluids under very high pressure
RADERMECKER, Régis ULg; Thiry, A.; Beaujean, M.

in Journal of Vascular Diseases (1999, September), 11

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See detailComplex invasion pattern of the cerebral cortex bymicroglial cells during development of the mouse embryo.
Avila Macaya, Ariel Salvatore ULg

in Glia (2012)

Microglia are the immune cells of the central nervous system. They are suspected to play important roles in adult synaptogenesis and in the development of the neuronal network. Microglial cells originate ... [more ▼]

Microglia are the immune cells of the central nervous system. They are suspected to play important roles in adult synaptogenesis and in the development of the neuronal network. Microglial cells originate from progenitors in the yolk sac. Although it was suggested that they invade the cortex at early developmental stages in the embryo, their invasion pattern remains largely unknown. To address this issue we analyzed the pattern of cortical invasion by microglial cells in mouse embryos at the onset of neuronal cell migration using in vivo immunohistochemistry and ex vivo time-lapse analysis of microglial cells. Microglial cells begin to invade the cortex at 11.5 days of embryonic age (E11.5). They first accumulate at the pial surface and within the lateral ventricles, after which they spread throughout the cortical wall, avoiding the cortical plate region in later embryonic ages. The invasion of the cortical parenchyma occurs in different phases. First, there is a gradual increase of microglial cells between E10.5 and E14.5. From E14.5 to E15.5 there is a rapid phase with a massive increase in microglia, followed by a slow phase again from E15.5 until E17.5. At early stages, many peripheral microglia are actively proliferating before entering the parenchyma. Remarkably, activated microglia accumulate in the choroid plexus primordium, where they are in the proximity of dying cells. Time-lapse analysis shows that embryonic microglia are highly dynamic cells. [less ▲]

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See detailComplex magnetic ordering in Eu3InP3: A new rare earth metal zintl compound
Jiang, J.; Payne, A. C.; Olmstead, M. M. et al

in Inorganic Chemistry (2005), 44(7), 2189-2197

Eu(3)lnP(3) has been prepared as large single crystals with an indium flux reaction. The structure of the new compound is isotypic to Sr(3)lnP(3) and crystallizes in the orthorhombic space group Pnma with ... [more ▼]

Eu(3)lnP(3) has been prepared as large single crystals with an indium flux reaction. The structure of the new compound is isotypic to Sr(3)lnP(3) and crystallizes in the orthorhombic space group Pnma with unit cell dimensions of a = 12.6517(15) angstrom, b = 4.2683(5) angstrom, and c = 13.5643(14) angstrom (Z = 4, T = 140 K, R1 = 0.0404, wR2 = 0,0971 for all data). The structure consists of one-dimensional chains of corner-shared distorted [InP2P2/2](6-) tetrahedra separated by rows of Eu2+ ions. Two of the three crystallographically distinct europium sites have a short Eu(1)-Eu(2) distance of 3.5954(7) angstrom, which yields Eu-Eu dimers. The Eu-P bond distances range from 2.974(2) to 3.166(2) angstrom. The temperature dependence of the conductivity indicates that Eu(3)lnP(3) is a small band gap semiconductor. Both magnetization and Eu-151 Mossbauer spectral measurements indicate that the europium in Eu(3)lnP(3) is divalent and that at least two magnetic transitions occur. Magnetization studies reveal magnetic transitions at 14, 10.4, and similar to 5 K. These transitions are also observed in heat capacity studies of Eu(3)lnP(3). The Mossbauer spectra indicate that the two europium sites are ordered at 12 K and that all three europium sites are ordered at 8 K. [less ▲]

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See detailComplex modulation of singing behavior by testosterone in an open-ended learner, the European Starling.
Van Hout, Alain J*-M; Eens, Marcel; Balthazart, Jacques ULg et al

in Hormones & Behavior (2009), 56(5), 564-73

In many temperate zone songbird species males only produce song during the breeding season, when plasma testosterone (T) levels are high. Males of some species sing throughout the year, even when T levels ... [more ▼]

In many temperate zone songbird species males only produce song during the breeding season, when plasma testosterone (T) levels are high. Males of some species sing throughout the year, even when T levels are low, indicating a dissociation between high T levels and song rate. Given that few studies have taken advantage of these species, we compare here song traits expressed under high versus low T concentrations and we study the role of testosterone in adult song learning in the European Starling, an open-ended learner in which repertoire size dramatically increases with age. We performed a detailed comparison of song complexity and song rate between fall and spring in 6-year-old intact male European starlings. In parallel, we investigated whether potential seasonal changes were regulated by the gonadally induced increase in plasma T, by comparing seasonal changes in intact and castrated males of the same age (castrated as juveniles during their first fall) and by subsequently experimentally elevating T in half of the castrated males. While song rate and stereotypy did not differ between intacts and castrates or between fall and spring, both groups increased their average song bout length from fall to spring, but only intact males increased their repertoire size, indicating that effects of seasonal T changes differ between song traits. Intact males overall displayed a larger song repertoire and a longer bout length than the castrates, and implantation with T caused a turnover in repertoire composition in castrates. However, as the castrates had never experienced high T levels and yet displayed a markedly higher repertoire size than that of typical yearling males, this suggests that the progressive increase of song repertoire with age in male starlings is not dependent on gonadal T, although it may be T-enhanced. [less ▲]

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See detailComplex populations of minor pathogens associated with roots from barley plants infected by barley yellow mosaic virus.
Ijdenberg, P.; Kummert, J.; Lepoivre, Philippe ULg

in Parasitica (1986), 42(4),

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See detailThe Complex Problem of Ards: Pathophysiology, Management
Lamy, Maurice ULg

in Acta Anaesthesiologica Belgica (1988), 39(3 Suppl 2), 37-41

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See detailComplex protists in Mesoproterozoic rocks.
Javaux, Emmanuelle ULg; knoll, A. H.; Walter, M.

Conference (2001, April)

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See detailComplex protists in Mesoproterozoic rocks.
Javaux, Emmanuelle ULg; Knoll, A. H.; Walter, Malcolm

Conference (2001)

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See detailComplex regulation of the FRD3 gene in Arabidopsis relatives
Charlier, Jean Benoit; Polese, Catherine ULg; Nouet, Cécile ULg et al

Poster (2014, March 31)

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See detailComplex regulation of the FRD3 gene in Arabidopsis relatives
Charlier, Jean-Benoit ULg; Polese, Catherine ULg; Nouet, Cécile ULg et al

Poster (2013, February 26)

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See detailComplex Risks from Old Urban Waste Landfills: Sustainability Perspective from Iasi, Romania
Ciumasu, I.; Costica, M.; Costica, N. et al

in Journal of Hazardous Materials (2012), 16

Landfills continue to represent the most frequent managerial practice for municipal solid wastes and an increasing and complex problem globally. In certain countries, a transition to an open society and ... [more ▼]

Landfills continue to represent the most frequent managerial practice for municipal solid wastes and an increasing and complex problem globally. In certain countries, a transition to an open society and free market is superimposed on the transition to sustainability, resulting in even higher complexity of management. This paper proposes an approach for problem-structuring of landfills in complex transitions: sustainability or unsustainability of a management approach is determined by a set of sustainability filters that are defined by sets of indicators and prioritized according the systemic concept of sustainability, which says that economy is embedded in society, which is embedded in nature. The writers exercise this approach with an old landfill in Iasi, Romania, and conclude for unsustainability, because the ecological sustainability filter is not successfully passed. Social and economic sustainability filters are also discussed in relation with the ecological sustainability indicators. The described approach allows a coherent, transdisciplinary synthesis of knowledge scattered across various disciplines, a pervasive problem in landfill management. The case study helps distinguish between generally true and context-dependent aspects. [less ▲]

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See detailComplex structure of cometary bands tentatively ascribed to the contour of the solar spectrum
Swings, Polydore ULg

in Lick Observatory Bulletin (1941), 19

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See detailThe complex structure of the Ca II (H and K) lines in the spectrum of the A0ep star with infrared excess HD 190073. II. Interpretation: the selective effect of radiative forces.
Surdej, Jean ULg; Swings, Jean-Pierre ULg

in Astronomy and Astrophysics (1976), 47

Abstract image available at: http://esoads.eso.org/abs/1976A&A....47..121S

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See detailThe complex structure of the Ca II (H and K) lines in the spectrum of the AOep star with infrared excess HD190073
Surdej, Jean ULg; Swings, Jean-Pierre ULg

in Slettebak, A. (Ed.) IAUS 70: Be and Shell Stars (1976)

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See detailComplex structures in the calculated photoionization spectrum of CO in the 17-17.5 eV energy region.
Leyh, Bernard ULg; Raseev, Gheorghe

in Journal of Chemical Physics (1988), 89(2), 820-829

Complicated spectral features appear in the CO photoionization spectra between 17 and 17.5 eV photon energy. In order to interpret these processes, we refine in the present paper our previous model [B ... [more ▼]

Complicated spectral features appear in the CO photoionization spectra between 17 and 17.5 eV photon energy. In order to interpret these processes, we refine in the present paper our previous model [B. Leyh and G. Raseev, Phys.Rev. A34, 2920 (1986)] by introducing all the vibrational levels of the first three electronic states of CO+. This more accurate treatment leads to two major results. The resonance at 17.1 eV and 17.3 eV are complex resonances resulting from the interaction between the Rydberg series converging to the A2Pi and B2Sigma+ ionic states: they can no more be assigned simply to Rydberg states converging to CO+ B2Sigma+. The intermediate experimental feature at 17.2 eV, missing in our previous calculation, is now present in the theoretical spectrum. Mainly, this feature, which we have called composite resonance, is a broadned (by the experimental resolution) superposition of Rydberg states converging to the A2Pi,v+=4 state. In this paper, we present and analyze the vibrationally resolved cross sections and symmetry parameter for the X2Sigma+,v+=0-3 and A2Pi,v+0-4 states. These theoretical results are compared to recent experimental data by Leyh et al. [Chem.Phys.115, 243 (1987)] and by Hardis and co-workers (the preceeding paper). [less ▲]

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