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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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See detailComplex subordinators derived from noun complement clauses
Brems, Lieselotte ULg; Davidse, Kristin

in Acta Linguistica Hafniensia : International Journal of Linguistics (2010), 42(2), 101-116

In this article, we investigate the development of complex subordinators from noun complement clauses in English, basing ourselves on the analysis of synchronic data from the COBUILD corpus. We first ... [more ▼]

In this article, we investigate the development of complex subordinators from noun complement clauses in English, basing ourselves on the analysis of synchronic data from the COBUILD corpus. We first present a breadth study of complex subordinators originating in “in þ NP þ that/of-clause”- syntagms and show how these align themselves with oppositions within the causal, temporal and comparative subordinator paradigms. We then offer an in-depth study of the cluster of strings “in (the) hope(s) that/of”, arguing that the subordinators they yield enter as marked members into the subparadigm of purposive conjunctions, which they semantically enrich through lexical and structural persistence. [less ▲]

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See detailComplex-scaling approach to the decay of Bose-Einstein condensates
Schlagheck, Peter ULg; Paul, T.

in Physical Review. A (2006), 73(2),

The mean-field dynamics of a Bose-Einstein condensate is studied in the presence of a microscopic trapping potential from which the condensate can escape via tunneling through finite barriers. We show ... [more ▼]

The mean-field dynamics of a Bose-Einstein condensate is studied in the presence of a microscopic trapping potential from which the condensate can escape via tunneling through finite barriers. We show that the method of complex scaling can be used to obtain a quantitative description of this decay process. A real-time propagation approach that is applied to the complex-scaled Gross-Pitaevskii equation allows us to calculate the chemical potentials and lifetimes of the metastably trapped Bose-Einstein condensate. The method is applied to a one-dimensional harmonic confinement potential combined with a Gaussian envelope, for which we compute the lowest symmetric and antisymmetric quasibound states of the condensate. A comparison with alternative approaches using absorbing boundary conditions as well as complex absorbing potentials shows good agreement. [less ▲]

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See detailComplexation of uranyl ion by polyvinylimidazole: Electrochemical preparation and leaching tests investigations
Martinot, Lucien; Leroy, D.; Jérôme, Christine ULg et al

in Journal of Radioanalytical & Nuclear Chemistry (1997), 224(1-2), 71-76

In this work, we intend to check the claims of an U.S. Patent (Westinghouse E.C.) which describes an original treatment for low level activity radioactive wastes. The process deals with electrochemical ... [more ▼]

In this work, we intend to check the claims of an U.S. Patent (Westinghouse E.C.) which describes an original treatment for low level activity radioactive wastes. The process deals with electrochemical preparation of polyvinylimidazole (PVI) which is a polymer capable of complexing uranyl ions. We confirm the complexation of uranyl ions by PVI in various media by FT-IR and UV-Visible analysis but all these complexes were found to be soluble in water so we put forward new complexes with an additional polymer to shape out insoluble complex. Leaching tests demonstrate the efficiency of our process. [less ▲]

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See detailComplexation of uranyl ion by three polyacrylamide type polymers: electrochemical preparation and leaching tests investigations
Leroy, D.; Martinot, Lucien; Jérôme, Christine ULg et al

in Journal of Radioanalytical & Nuclear Chemistry (1999), 240(3), 867-875

describe an original process for the treatment of low level activity radioactive liquid wastes. It deals with the electrochemical preparation of three polyacrylate polymers: polyacrylamide (PAam ... [more ▼]

describe an original process for the treatment of low level activity radioactive liquid wastes. It deals with the electrochemical preparation of three polyacrylate polymers: polyacrylamide (PAam), polyacrylamidoglycolic acid (PAAG), polyacrylamidomethylpropanesulfonic acid (PAMPS) which are capable of complexing uranyl ions. We have demonstrated the complexation of uranyl by FT-IR and UV-Visible spectroscopy. All these complexes are soluble in water and we insolubilize in turn the complexes by crosslinking or by neutralization of positively charged complexes by the addition of polyanions to the medium. We have then done dynamic and static leaching tests on these insoluble complexes. [less ▲]

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See detailComplexation of uranyl ions by polypyrrole doped by sulfonated and phosphonated polyethyleneimine
Leroy, D.; Martinot, Lucien; Mignonsin, P. et al

in Journal of Applied Polymer Science (2003), 88(2), 352-359

Branched polyethyleneimine (PEI) was sulfonated by reaction with chloropropanesulfonylchloride and phosphonated by reaction with phosphorous acid and formaldehyde. The accordingly formed polyanions were ... [more ▼]

Branched polyethyleneimine (PEI) was sulfonated by reaction with chloropropanesulfonylchloride and phosphonated by reaction with phosphorous acid and formaldehyde. The accordingly formed polyanions were used as doping agents for polypyrrole (PPy). The amount of doping polyanions into thin films of PPy was measured by Rutherford back-scattering. These films were tested for their capacity to extract uranyl ions from liquid wastes of low level activity. The uranium content was determined by neutron activation analysis, autoradiography, and gravimetry of uranium oxide after calcination. The resistance against static and dynamic leachings was also estimated. [less ▲]

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See detailComplexe (monde de plus en plus)
Bouquiaux, Laurence ULg

in Durand, Pascal (Ed.) Les nouveaux mots du pouvoir (2007)

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See detailComplexe acide téichoique-mucopeptide des parois cellulaires de Bacillus megaterium KM
Ghuysen, Jean-Marie ULg

in Biochimica et Biophysica Acta (1961), 50(3), 413-429

Walls of a batch of Bacillus megalerium KM contain a polyol phosphate compound which, in contrast with BADDILEY'S teichoic acids, is not extracted by cold tri-chloroacetic acid. It has been isolated by ... [more ▼]

Walls of a batch of Bacillus megalerium KM contain a polyol phosphate compound which, in contrast with BADDILEY'S teichoic acids, is not extracted by cold tri-chloroacetic acid. It has been isolated by paper electrorheophoresis from the non-dialysable fraction obtained after incubation of the walls by lysozyme. Owing to the chemical analysis, it is associated with mucopeptide residues and the whole complex represents 40%, dry weight, of the walls. The degradation of this complex by two Streptomyces enzymes enables the identi-fication of three fragments: a teichoic fragment of polyol phosphate, glucose and N-acetylglucosamine; a mucopeptide fragment of amino acids and N-acetylmuramic acid; a disaccharide fragment 6-O-fl-N-acetylglucosaminyl-N-acetyl-muramic acid. It is believed that the latter represents an unit of a poly-N-acetylhexosamine back-bone of the basal mucopeptide of the wall. The teichoic fragment is liberated from the whole colnplex under the action of both Streptomyces enzymic preparations FI or F2B. It can also be obtained by in-cubating directly the walls with each of those preparations. The disaccharide fragment is liberated under the action of the F2B amidase. Approx. 6 %, dry weight, of the walls consist of glucose (probably a polyglucose) non associated with the teichoic acid-mucopeptide complex. N-acetylmuramic acid and various oligosaccharides consisting of N-acetyl- glucosamine alone or of both N-acetylglucosamine and N-acetylmuramic acid, give, on paper, a pink coloration with the diphenylamine-trichloroacetic reagent which allows them to be distinguished from N-acetylglucosamine. [less ▲]

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See detailLe complexe Chrysoperla carnea en Belgique (Neuroptera : Chrysopidae)
Bozsik, Andras; Mignon, Jacques ULg; Gaspar, Charles

in Notes Fauniques de Gembloux (2003), 50

De 1997 à 2002, près de 4000 Chrysoperla carnea sensu lato furent collectées dans quinze localités de Belgique, principalement dans la ville de Gembloux (Province de Namur). Le fauchage de la végétation à ... [more ▼]

De 1997 à 2002, près de 4000 Chrysoperla carnea sensu lato furent collectées dans quinze localités de Belgique, principalement dans la ville de Gembloux (Province de Namur). Le fauchage de la végétation à l’aide d’un filet représente le principal mode d’échantillonnage. Les individus capturés furent identifiés sur base des descriptions de Thierry et al. (1992), Duelli (1995, 1999 communication personnelle), ainsi que par comparaison, soit avec différents types morphologiques (de D. Thierry), soit à des individus identifiés sur base de leurs chants (par P. Duelli). Chrysoperla kolthoffi sensu Cloupeau (Ch.c.c.4. ou « motorboat » sensu Henry) constitue le taxon le plus représenté dans les différentes localités. Chrysoperla carnea sensu Cloupeau (« low motorboat » sensu Henry) est également souvent rencontrée abondamment, principalement en automne. Seule Chrysoperla lucasina Lacroix est observée plus rarement chaque année et dans chaque lieu. La fréquence saisonnière de Ch. carnea s.C. est variable. Ainsi, elle est relativement faible en été et elle augmente progressivement au cours de l’automne. A cette période, les proportions de Ch. kolthoffi diminuent tandis que le taux de Ch. lucasina reste stable. [less ▲]

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See detailUn complexe d’espèces d’Afzelia des forêts africaines d’intérêt économique et écologique (synthèse bibliographique)
Donkpegan, Segbedji ULg; Hardy, J. Olivier; Lejeune, Philippe ULg et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2014), 18(2),

The purpose of this review is to provide a knowledge update and a comprehensive literature review of the genus Afzelia, a complex of sister species exploited for their timber in Central Africa. The ... [more ▼]

The purpose of this review is to provide a knowledge update and a comprehensive literature review of the genus Afzelia, a complex of sister species exploited for their timber in Central Africa. The distribution of Afzelia species in Africa suggests that the tree has made various adaptations due to ecological factors. However, on the basis of only vegetative criteria, it is difficult to distinguish species in forest inventory, and this could compromise the sustainable management approach promoted by the populations of Central African countries. We show that the genus remains generally understudied, although some of its species are considered by the IUCN as being under threat. Therefore, the ecological and genetic aspects of our investigations should prove relevant to the future cultivation of Afzelia. [less ▲]

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See detailLe complexe de l'intrus, ou l'effet de l'écart d'âge sur les membres d'une fratrie
Haxhe, Stéphanie ULg

in Dialogue : Recherches Cliniques et Sociologiques sur le Couple et la Famille (2002), 157(3), 107-116

This article deals with a study realized amongst siblings whose gaps in age were different. It attempts to bring out the whole importance of this variable to the development of the siblings, considered in ... [more ▼]

This article deals with a study realized amongst siblings whose gaps in age were different. It attempts to bring out the whole importance of this variable to the development of the siblings, considered in its « normality ». It notably points out how the intensity of the differences between full siblings of the same sex and with a small gap in age can be understood (indeed, sisters and brothers who are close in age and of the same sex, particularly amongst siblings of two, often appear to be very different and complementary). But this article also shows how the mark of the intrusion is different according to the age of the elder during this intrusion and how the impact of this variable (which is yet so little studied) seems to be significant in the individuals’development, on the narcissistic level as much as in the affects management. [less ▲]

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See detailLe complexe du Lincombien-Ranisien-Jerzmanowicien
Flas, Damien ULg

in Depaepe, Pascal (Ed.) La France au Paléolithique (2009)

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See detailLe complexe respiratoire bovin
Lekeux, Pierre ULg

in Annales de Médecine Vétérinaire (1996), 140

Respiratory disease is the principal cause of loss of young cattle worldwide. The syndrome arises from a number of factors, including those involving the animal, e.g., age, general condition and immune ... [more ▼]

Respiratory disease is the principal cause of loss of young cattle worldwide. The syndrome arises from a number of factors, including those involving the animal, e.g., age, general condition and immune status; its environment, e.g. changes in food, temperature and humidity that lead to stress; and the presence of infectious agents, e.g., bacteria, viruses and mycoplasmas. The syndrome, in a method proposed by the author, can be classified into four grades: Grade 1, subclinical disease; Grade 2, compensated clinical disease; Grade 3, noncompensated clinical disease; and Grade 4, irreversible clinical disease. The increase in frequency and economic impact of bovine respiratory disease complex can be correlated with the escalating industrialisation of cattle produc-tion. In intensive operations, commingling of animals from multiple sources, exposure to many orga-nisms, stress and management practices are all factors that can lead to disease. The predisposition of cattle, espe-cially beef calves, to respiratory problems is related to their lack of functional pulmonary hardiness. Selection of breeds that demons-trate adequate pulmonary function and sufficient ventilatory reserve may help in the control of the bovine respiratory disease complex, but this approach is difficult to implement and slow to produce results. Prophylactic measures, including vaccination programmes and modifying management practices to reduce stress, also have a place in preventing the bovine respiratory disease complex. Unfortunately, these measures are not always easy to put into operation and cannot completely eradicate the problem. Therapeutic strategies to minimise the economic impact of the syndrome include use of appropriate antibacterial therapy, modulation of the pulmonary inflammatory reaction and correction of mechanical disorders [less ▲]

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See detail. Le complexe tourbeux du Grand-Bongard.
Bonhomme, JM; Gavray, L; Lejeune, I et al

in Hautes Fagnes (1985), 179

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See detailComplexes à multicomposants de miconazole avec différents acides et cyclodextrines
Piel, Géraldine ULg; Evrard, Brigitte ULg; Delattre, Luc ULg

in Journal de Pharmacie de Belgique (1997), 52(3), 124

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See detailComplexes I in the green lineage.
Remacle, Claire ULg; Hamel, Patrice; Larosa, Véronique ULg et al

in Sazanov, Leonid (Ed.) A structural perspective on complex I. (2012)

Detailed reference viewed: 20 (3 ULg)