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See detailThe dual role of weather forecasts on changes in activity-travel behavior
Cools, Mario ULg; Creemers, Lieve; Janssens, Davy et al

Conference (2011)

In previous studies, conflicting results could be found regarding the impact of weather forecasts on travel decisions, e.g. Khattak and De Palma (1997) found no significant effect of acquiring forecasted ... [more ▼]

In previous studies, conflicting results could be found regarding the impact of weather forecasts on travel decisions, e.g. Khattak and De Palma (1997) found no significant effect of acquiring forecasted weather information on the probability of adapting mode and departure time, whereas the results reported by Hagens (2005), Niina (2009) and Kilpelainen and Summala (2007) indicated that weather forecast do play an important role. Therefore this paper investigates the changes in activity-travel behavior in response to weather forecasts. The data for this study is collected by means of a stated adaptation survey, which is both administered on the internet and via a traditional paper and pencil questionnaire. In total, 595 respondents completed the survey. To obtain an optimal correspondence between the true population and the sample weights are assigned to the observation. Results indicate that weather information plays a dual role. On the one hand people do alter their activity-travel behavior in response to weather information, albeit these changes are not as pronounced when compared to actual weather. On the other hand the extent (frequency and media type) to which people are exposed to these weather forecasts appears to play only a marginal role. This dual role weather information plays in this study appears to be supported by the conflicting international literature and therefore revealing the underlying psychological motivations to change one's activity-travel behavior is a key challenge for further research. [less ▲]

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See detailA dual strategy to cope with high light in Chlamydomonas reinhardtii
Allorent, G; Tokutsu, R; Roach, T et al

in Plant Cell (2013), 25(2), 545-557

Absorption of light in excess of the capacity for photosynthetic electron transport is damaging to photosynthetic organisms. Several mechanisms exist to avoid photodamage, which are collectively referred ... [more ▼]

Absorption of light in excess of the capacity for photosynthetic electron transport is damaging to photosynthetic organisms. Several mechanisms exist to avoid photodamage, which are collectively referred to as nonphotochemical quenching. This term comprises at least two major processes. State transitions (qT) represent changes in the relative antenna sizes of photosystems II and I. High energy quenching (qE) is the increased thermal dissipation of light energy triggered by lumen acidification. To investigate the respective roles of qE and qT in photoprotection, a mutant (npq4 stt7-9) was generated in Chlamydomonas reinhardtii by crossing the state transition–deficient mutant (stt7-9) with a strain having a largely reduced qE capacity (npq4). The comparative phenotypic analysis of the wild type, single mutants, and double mutants reveals that both state transitions and qE are induced by high light. Moreover, the double mutant exhibits an increased photosensitivity with respect to the single mutants and the wild type. Therefore, we suggest that besides qE, state transitions also play a photoprotective role during high light acclimation of the cells, most likely by decreasing hydrogen peroxide production. These results are discussed in terms of the relative photoprotective benefit related to thermal dissipation of excess light and/or to the physical displacement of antennas from photosystem II. [less ▲]

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See detailDual tachykinin NK1/NK2 antagonist DNK333 inhibits neurokinin A-induced bronchoconstriction in asthma patients
Joos, G. F.; Vincken, W.; Louis, Renaud ULg et al

in European Respiratory Journal (2004), 23(1), 76-81

Inhalation of neurokinin A (NKA) causes bronchoconstriction in patients with asthma. In vitro both tachykinin NK1 and NK2 receptors can mediate airway contraction. In this study the authors examined the ... [more ▼]

Inhalation of neurokinin A (NKA) causes bronchoconstriction in patients with asthma. In vitro both tachykinin NK1 and NK2 receptors can mediate airway contraction. In this study the authors examined the effects of a single dose of the dual tachykinin NK1/NK2 receptor antagonist, DNK333, on NKA-induced bronchoconstriction in asthma. A total of 19 male adults with mild asthma completed a randomised, double-blind, placebo-controlled crossover trial. Increasing concentrations of NKA (3.3 x 10(-9) to 1.0 x 10(-6) mol(.)mL(-1)) were inhaled at 1 and 10 h intervals after a single oral dosing with either DNK333 (100 mg) or a placebo. It was observed that DNK333 did not affect baseline lung function but did protect against NKA-induced bronchoconstriction in those patients. The mean log(10) provocative concentration causing a 20% fall in forced expiratory volume in one second for NKA was -5.6 log(10) mol(.)mL(-1) at 1 h after DNK333 treatment and -6.8 log(10) mol(.)mL(-1) after placebo. This was equivalent to a difference of 4.08 doubling doses, which decreased to a difference of 0.90 doubling doses 10 h after treatment. The results shown in this report indicate that DNK333 blocks neurokinin A-induced bronchoconstriction in patients with asthma. [less ▲]

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See detailA dual thromboxane inhibitor and thromboxane receptor antagonist prevents pig myocardial infarction induced by coronary thrombosis
Rolin, S.; Petein, M.; Tchana-Sato, Vincent ULg et al

in European Heart Journal (2003), 24(Suppl. S), 325

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See detailDual time point fluorine-18 fluorodeoxyglucose positron emission tomography: a potential method to differentiate malignancy from inflammation and normal tissue in the head and neck.
Hustinx, Roland ULg; Smith, R. J.; Benard, F. et al

in European Journal of Nuclear Medicine (1999), 26(10), 1345-8

Fluorine-18 fluorodeoxyglucose (FDG) positron emission tomography (PET) studies imaging FDG PET imaging is used to detect and stage head and neck cancers. However, the variable physiologic uptake of FDG ... [more ▼]

Fluorine-18 fluorodeoxyglucose (FDG) positron emission tomography (PET) studies imaging FDG PET imaging is used to detect and stage head and neck cancers. However, the variable physiologic uptake of FDG in different normal structures as well as at inflammatory sites may either obscure a tumor focus or be falsely interpreted to represent tumor activity. Twenty-one patients (9 men, 12 women, median age 59) were scanned serially at two time points, one at 70 min (range 47-112) and the second at 98 min (77-142) after the intravenous injection of 4.3 MBq/kg of FDG. The mean interval between emission scans was 28 min (13-49). Transmission scans were performed and regions of interest (ROIs) were overlayed on the fully corrected images. Standardiued uptake values (SUVs) were generated for the cerebellum, tongue, larynx, every lesion, and a matched contralateral site. Follow-up and pathologic studies revealed 18 squamous cell carcinomas and nine inflammatory or infectious lesions. Tumor SUVs were 4.0+/-1.6 (mean +/- SD) for the first scan and 4. 5+/-2.2 for the second scan. Contralateral SUVs were 1.2+/-0.5 and 1. 1+/-0.5 for the two scans. Tumor SUVs increased by 12%+/-12% as compared with a 5%+/-17% decrease for contralateral sites (P<0.05). SUVs for inflammatory sites (2.0+/-0.7 and 2.0+/-0.9), cerebellum (4. 2+/-1.3 and 4.3+/-1.4), tongue (1.8+/-0.4 and 1.9+/-0.5) and larynx (1.5+/-0.6 and 1.5+/-0.6) remained constant over time (+0.6%, +2.8%, +1.4%, and -2.4%; P<0.05 when compared with tumor SUV changes). The ratio tumor/contralateral SUV increased by 23%+/-29% over time while this ratio for inflamed sites increased by only 5%+/-15% (P=0.07). The time interval between scans correlated with increase in SUV for tumors (r=0.55, P<0.05) but not for any of the other ROIs. Separation was superior when studies were performed more than 30 min apart (P<0.05). These preliminary data suggest that dual time point imaging compatible with a clinical study protocol is helpful in differentiating malignant lesions from inflammation and normal tissues, especially when separated by a sufficient time interval. [less ▲]

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See detailDual time-point FDG-PET imaging to distinguish tumor from normal and inflammatory sites in the head and neck.
HUSTINX, Roland ULg; SMITH, RJ.; ROSENTHAL, DI. et al

in Journal of Nuclear Medicine (The) (1999), 40

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See detailDual-use controls outreach: a new method
Michel, Quentin ULg; Paile, Sylvain ULg

in WorldECR (2015), (38), 27-28

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See detailDualism persists in the science of mind.
Demertzi, Athina ULg; Liew, Charlene; Ledoux, Didier ULg et al

in Annals of the New York Academy of Sciences (2009), 1157

The relationship between mind and brain has philosophical, scientific, and practical implications. Two separate but related surveys from the University of Edinburgh (University students, n= 250) and the ... [more ▼]

The relationship between mind and brain has philosophical, scientific, and practical implications. Two separate but related surveys from the University of Edinburgh (University students, n= 250) and the University of Liege (health-care workers, lay public, n= 1858) were performed to probe attitudes toward the mind-brain relationship and the variables that account for differences in views. Four statements were included, each relating to an aspect of the mind-brain relationship. The Edinburgh survey revealed a predominance of dualistic attitudes emphasizing the separateness of mind and brain. In the Liege survey, younger participants, women, and those with religious beliefs were more likely to agree that the mind and brain are separate, that some spiritual part of us survives death, that each of us has a soul that is separate from the body, and to deny the physicality of mind. Religious belief was found to be the best predictor for dualistic attitudes. Although the majority of health-care workers denied the distinction between consciousness and the soma, more than one-third of medical and paramedical professionals regarded mind and brain as separate entities. The findings of the study are in line with previous studies in developmental psychology and with surveys of scientists' attitudes toward the relationship between mind and brain. We suggest that the results are relevant to clinical practice, to the formulation of scientific questions about the nature of consciousness, and to the reception of scientific theories of consciousness by the general public. [less ▲]

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See detailDualisme, mobilité et déterminants familiaux : une analyse des transitions sur le marché du travail
Broze, Laurence; Gavray, Claire ULg; Ruyters, Christine ULg

in De la Croix, David; Docquier, Frédéric; Mainguet, Christine (Eds.) et al Capital humain et dualisme sur le marché du travail (2002)

The paper tackles the question of labour market dualisation. Using longitudinal data, the authors analyse the socio-professional positions and transitions in both gender groups. They discuss the results ... [more ▼]

The paper tackles the question of labour market dualisation. Using longitudinal data, the authors analyse the socio-professional positions and transitions in both gender groups. They discuss the results of 'probit' analyses ' , inviting to reflect upon evolutions from two points of view : work offer and demand [less ▲]

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See detailDualisme, mobilité et déterminants familiaux: une analyse de transition sur le marché du travail
Broze, laurence; Gavray, Claire ULg; Ruyters, Christine

Report (2000)

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See detailDualisme, mobilité et déterminants familiaux: une analyse des transitions sur le marché du travail
Broze, L.; Gavray, Claire ULg; Ruyters, C.

in CIFOP (Ed.) Dualisme et Institutions du marché du travail (2000)

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See detailDualité des principes bactériolytiques de l'actinomycetine.
Ghuysen, Jean-Marie ULg

in Archives Internationales de Physiologie (1953), 61(2), 259-260

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See detailA Duality for the Algebras of a Lukasiewicz n + 1-valued Modal System
Teheux, Bruno ULg

in Studia Logica (2007), 87(1), 13-36

We develop a duality for the varieties of a Lukasiewicz n + 1-valued modal system. This duality is an extension of Stone duality for modal algebras. Some logical consequences (such as completeness results ... [more ▼]

We develop a duality for the varieties of a Lukasiewicz n + 1-valued modal system. This duality is an extension of Stone duality for modal algebras. Some logical consequences (such as completeness results, correspondence theory. . . ) are the derived and we propose some ideas for future research. [less ▲]

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See detailDuality induced by canonical extension: The boolean case
Cavus, Rukiye ULg; Hansoul, Georges ULg

Conference (2013, January 31)

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See detailA duality principle for homogeneous vector fields with applications
Moreau, Luc; Aeyels, Dirk; Peuteman, Joan et al

in Systems & Control Letters (2002), 47(1), 37-46

We introduce a duality principle for homogeneous vectorfields. As an application of this duality principle, stability and boundedness results for negative order homogeneous differential equations are ... [more ▼]

We introduce a duality principle for homogeneous vectorfields. As an application of this duality principle, stability and boundedness results for negative order homogeneous differential equations are obtained, starting form known results for positive order homogeneous differential equations. [less ▲]

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See detailDuane anomaly, congenital myopathy and severe scoliosis in sibs: new AR syndrome?
Verloes, Alain; Misson, Jean-Paul ULg; Gillet, Philippe ULg et al

in Annales de Génétique (2003), 46(4), 449-52

We report on two sisters who show a similar pattern of anomalies consisting of bilateral Stilling-Turk-Duane retraction syndrome (type 3), non-progressive hypotonia with delayed motor milestones but ... [more ▼]

We report on two sisters who show a similar pattern of anomalies consisting of bilateral Stilling-Turk-Duane retraction syndrome (type 3), non-progressive hypotonia with delayed motor milestones but normal intelligence, severe, early onset scoliosis, and short stature. Muscular biopsy revealed numerous regenerating fibers, but no specific abnormalities among the non-regenerating fibers. This combination of anomalies has not been previously reported, and could represent a new autosomal recessive syndrome. The only differential diagnosis is Crisfield-Dretakis-Sharpe syndrome, a combination of lateral gaze palsy, ptosis, and scoliosis without hypotonia, recessively inherited. [less ▲]

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See detailLA ‘DUBAÏSATION’, UNE METROPOLISATION DU ZERO POLITIQUE
Aoun, Oula ULg; Farah, Jihad ULg

Conference (2013)

Detailed reference viewed: 45 (9 ULg)