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See detailPOPs : Stay Off! Stay Away! Stay Alive! Human exposure and food control
Focant, Jean-François ULg

in Restek Advantage (2011)

Detailed reference viewed: 40 (5 ULg)
See detailPOPs: Human exposure and food control
Focant, Jean-François ULg

Scientific conference (2011, April)

Detailed reference viewed: 3 (1 ULg)
See detailPopular arts and Diversity in post-migration urban Settings
Martiniello, Marco ULg

Scientific conference (2009, July 15)

Detailed reference viewed: 11 (1 ULg)
See detailPOPULAR ARTS, DIVERSITY AND CULTURAL POLICIES IN POST-MIGRATION URBAN SETTINGS (POPADIVCIT)
Martiniello, Marco ULg

Scientific conference (2011, March 29)

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See detail“Popular Arts, Ethnicity and Migration”
Martiniello, Marco ULg

Scientific conference (2013, September 26)

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See detailPopular Economy in Santiago de Chile: State of Affairs and Challenges
Bauwens, Thomas ULg; Lemaître, Andreia

in World Development : The Multi-Disciplinary International Journal Devoted to the Study and Promotion of World Development (2014), 64

Do informal initiatives share a capitalist spirit of entrepreneurship? This article attempts to answer this question, using a “popular economy” analytical framework and focusing on the case of Chile ... [more ▼]

Do informal initiatives share a capitalist spirit of entrepreneurship? This article attempts to answer this question, using a “popular economy” analytical framework and focusing on the case of Chile. First, we present the context of the research, namely the economic and political evolutions in Chile since the 1970s and their effects on the popular economy. Then, we seek to answer the original question, relying on in-depth case studies of so-called “popular economy organizations”. Our research shows that their socio-economic logics significantly differ from those of the traditional capitalist firm. Our observations also suggest important differences between current and older initiatives. [less ▲]

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See detailPopular Modernism and The American Prose Poem : From Sherwood Anderson to Kenneth Patchen
Delville, Michel ULg

in The Prose Poem : an International Journal (1998), 7

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See detailPopularity as a moderator of peer selection and socialization of adolescent alcohol, marijuana, and tobacco use.
Mathys, Cécile ULg; Burk, William; Cillessen, Antonius

in Journal of Research on Adolescence (2013), 23(3), 513-523

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See detailPopulation compliance with national dietary recommendations and its determinants: findings from the ORISCAV-LUX study.
Alkerwi, A; Sauvageot, N; Nau, A et al

in British Journal of Nutrition (2012)

The objective of the present study was to determine the proportion of adults meeting national recommendations for food and nutrient intake and to identify the demographic, socio-economic and behavioural ... [more ▼]

The objective of the present study was to determine the proportion of adults meeting national recommendations for food and nutrient intake and to identify the demographic, socio-economic and behavioural factors that may contribute to weaken dietary compliance. ORISCAV-LUX is a cross-sectional study that took place in Luxembourg (2007-8). A representative stratified random sample of 1352 adults aged 18-69 years participated in the nationwide cardiovascular health survey. A FFQ was used to estimate food intake. Radar charts were built to compare graphically the compliance of the participants with different key dietary guidelines on the same set of axes. The thirteen food- and nutrient-based recommendations were scored and summed to create a recommendation compliance index (range - 0.5 to 14). Ordinal logistic regression analyses were performed to determine the factors contributing to poor dietary compliance. Several food- and nutrient-based guidelines were insufficiently respected compared with others. The greatest gaps occurred in the adherence to grain and dairy product consumption guidelines, as well as to total fat and notably to SFA recommendations. Age, country of birth, economic status, smoking status and subject's awareness of the importance of balanced meals emerged as independently associated with weak dietary compliance. Obese subjects conformed more to dietary recommendations compared with normal-weight subjects. The findings underscore the need for specific nutrition education messages along with targeted interventions. Efforts should be continued to increase population awareness of the importance of a healthy lifestyle and a balanced diet. [less ▲]

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See detailPopulation displacements in a 4°C+ world
Gemenne, François ULg

Conference (2009, September 29)

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See detailPopulation dynamics and ranging behaviour of a highly provisioned population of Macaca fascicularis in Bali: implications for management
Brotcorne, Fany ULg; Beudels-Jamar, Roseline; Huynen, Marie-Claude ULg

Conference (2012, May 22)

In response to the global landscape anthropization caused by the extensive urbanization and the recruitment of forestlands for cropping, the primate-human commensalism is growing as well as the related ... [more ▼]

In response to the global landscape anthropization caused by the extensive urbanization and the recruitment of forestlands for cropping, the primate-human commensalism is growing as well as the related interspecific conflict. In zones of interface, humans and primates are sympatric and compete for food and spatial resources. Today, we still poorly know the proportion of synanthrope primates and the impact of anthropic pressures. We present here data on 25 years-population dynamics and ranging behaviour of a long-term commensal-living population of long-tail macaques (Macaca fascicularis) in Ubud Monkey Forest, Bali (Indonesia). This population has experienced a dramatic growth over 25 years with an annual increase rate of 11%. In 2011, we counted 614 macaques split in 5 social groups and using an overall home range of 10ha with a 2.41ha core area centred on human provisioning places. We derived a very high population density of 61 macaques per hectare and concluded that this site is overpopulated. Moreover, the conflict between humans and macaques is increasing and requires specific management. As the natural food supply is low in Ubud Monkey Forest, we assume that the high carrying capacity of the site mainly depends on the artificial food supply. The abundance and the quality of artificial food may be the major factor determining such a high population density. The low predation pressure and the habitat compression by destruction of adjacent forests could also influence the positive demographic trend. As a tentative program of population control, we suggest both to lower the caloric content of the food provisioned to macaques and to conduct a sterilization programme. This strategy aims at reducing the conflict with humans and at promoting a sustainable coexistence by reducing birth rates and limiting the macaques’ population growth. [less ▲]

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See detailPopulation dynamics of CD4+ T cells lacking Thy-1 in murine retrovirus-induced immunodeficiency syndrome (MAIDS).
Moutschen, Michel ULg; Colombi, S.; Deprez, Manuel ULg et al

in Scandinavian Journal of Immunology (1994), 39(2), 216-24

Increased numbers of CD4+ Thy-1- cells have been described in the spleen (SP) of mice with retrovirus-induced immunodeficiency (MAIDS). Since this phenotypic abnormality might have considerable functional ... [more ▼]

Increased numbers of CD4+ Thy-1- cells have been described in the spleen (SP) of mice with retrovirus-induced immunodeficiency (MAIDS). Since this phenotypic abnormality might have considerable functional importance, the expansion of the CD4+ Thy-1- subset in MAIDS was characterized further. CD4+ Thy-1- and Thy-1+ T-cells from infected mice expressed similar densities of CD3 and TCR alpha/beta. In contrast, the Thy-1- subset was uniformly CD44hi, even early in the disease when part of Thy-1+ cells were still CD44lo. The emergence of CD4+ Thy-1- cells occurred first in SP and lymph nodes and was observed later in thymus. The important fraction of CD4+ cells lacking Thy-1 normally present in Peyer's patches was only weakly modified. Despite the major expansion of the CD4+ Thy-1- phenotype, the proliferating fraction was not higher in this subset than in CD4+ Thy-1+ cells from infected mice. Persistence after hydroxyurea administration was identical in both subsets, indicating similar mean cell lifespans. Taken together, these results show that the major expansion of CD4+ Thy-1- T-cells in MAIDS is not ascribable solely to increased proliferation within this subset. Phenotypic analysis suggests that CD4+ Thy-1- cells result from the differentiation of Thy-1+ cells induced by activation signals related to retroviral infection. [less ▲]

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See detailPopulation dynamics of Labeo senegalensis Valenciennes 1842 (Pisces: Cyprinidae) in the Oueme River, Benin
Montchowui, Elie; Chikou, Antoine; Ovidio, Michaël ULg et al

in Journal of Fisheries International (2011), 6(3), 52-58

he present study was conducted to understand the population parameters of Labeo senegalensis in Benin. Growth and mortality parameters, exploitation rates and annual recruitment patterns were estimated ... [more ▼]

he present study was conducted to understand the population parameters of Labeo senegalensis in Benin. Growth and mortality parameters, exploitation rates and annual recruitment patterns were estimated from monthly length-frequency samples between April, 2005 and March, 2006 for Labeo senegalensis in the Oueme river. Total length of the sampled 1436 fish ranged from 6.3-52.7 cm. The Von Bertalanffy Growth Function (VBGF) was fitted to the 12 consecutive month’s length-frequency data to obtain a VBGF with the following parameters: L∞ = 57 cm TL, K = 0.30 year-1. The growth performance index (ø') was calculated as 2.99. The total mortality estimates from the catch curve analysis was Z = 1.47 year-1 with a natural mortality M of 0.68 year-1 for a mean environmental temperature of 28°C. The fishing mortality F estimates was 0.79 year-1. The maximum of recruitment was recorded in June to September, indicating recruitment of one cohort year-1. The estimated potential longevity Tmax was 10 years. The exploitation ratio was 0.55 indicating that the Labeo senegalensis stock is on the verge being overfished. The results are discussed and compared to previously available information on Labeo senegalensis in others rivers. [less ▲]

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See detailPopulation ecology of coastal bottlenose dolphins (Tursiops truncatus) in Northern Patagonia Argentina
Vermeulen, Els ULg

Doctoral thesis (2014)

The population ecology of bottlenose dolphins (Tursiops truncatus) was assessed between 2006 and 2011 in Northern Patagonia, Argentina. Over these years, 356 systematic photo-identification surveys were ... [more ▼]

The population ecology of bottlenose dolphins (Tursiops truncatus) was assessed between 2006 and 2011 in Northern Patagonia, Argentina. Over these years, 356 systematic photo-identification surveys were conducted in Bahía San Antonio, of which 227 were land-based and 129 were conducted from a small outboard-powered rigid-hull inflatable boat. In total, 1472 h was spend searching for dolphins, and resulted in 215 h of observation of 415 dolphin groups. Photo-identification data resulted in the identification of 67 individual dolphins. Based on mark-recapture analysis, total abundance had a maximum corrected estimate of 83 (95%CI = 46 - 152) individuals. Adult survival rates varied between 0.97 (SE = 0.04) and 0.99 (SE = 0.01). Average calving interval of the 14 reproducing females equalled 3.5 ± 1.0 years. This results in 3.5 births/year in the entire population and a minimum annual birth rate of 4.2%. However, data suggest that calves may have been born and lost before being documented, underestimating birth rate, calf mortality and possibly the number of reproductive females. Either way, the recruitment rate of calves appears to be insufficient to compensate the overall mortality in the population. Additional data further indicated the genetic isolation and extremely low genetic diversity within this community, thus indicating this community of bottlenose dolphins is highly vulnerable and at risk. Association patterns within the studied community were relatively strong (HWI 0.30 ± 0.08), re-indicating the small size of the population. Nonetheless, the fluctuation in prey density and availability appeared to be the most important factor determining their fission-fusion dynamics. It appears that a combination of aspects inherent to the species and this habitat, such as low cost of locomotion, low predation pressure and food predictability, has helped reduce the costs of fission in response to intraspecific competition. Behavioural data indicated that Bahía San Antonio is mainly used to rest and forage, with a marked diurnal and seasonal pattern in their activity. Furthermore, dolphins appeared to show a preference for the shallower waters inside their core area; they moved in and out with the tide to remain in the intertidal zone as much as possible. The observed variation in foraging activity and spatial distribution is suggested to be driven by a seasonal and locally predictable variation in prey density and availability. Most of the identified dolphins showed a yearlong residency and long term site-fidelity to Bahía San Antonio, suggesting it is the core area within the larger home range of this community. Furthermore, based on the frequent presence of calves and high residency of reproductive females, this protected coastal environment appears to provide shelter for nursing calves. Many individuals of this community ranged along the entire northern coastline of the San Matías Gulf, up to the Río Negro Estuary (approx. 200 km). Further to the north, in the southern part of the Province of Buenos Aires, a neighbouring community of bottlenose dolphins was shown to exist. Both communities are largely isolated from each other, and the environmental discontinuities between two adjacent oceanic regimes in which these communities live are hypothesised to promote their co-existence. Additionally, four individuals from another community, originating from the more southern Province of Chubut, are known to reside in Bahía San Antonio. These individuals are genetically differentiated from all other individuals in the area, clearly shown in their distinct morphology. The apparent fine-scale population structure of bottlenose dolphins over the relative small geographical distances in Argentina has conservation implications and indicates the need for further detailed research. Currently, the populations of bottlenose dolphins in the Provinces of Buenos Aires and Chubut are reported to have nearly vanished. However, this disappearance has been largely ignored in the past 40 years resulting in the studied communities to be one of the last ones remaining in the country. It seems that the coastal lifestyle and site-fidelity of coastal bottlenose dolphins, and the belief of the species to be common, may have obfuscated the need for more extensive research and conservation efforts in Argentina in former years. Local declines of common species are easily overlooked when establishing priorities for conservation, and Argentina is not a unique case. An ever-increasing number of coastal bottlenose dolphin populations are reported to be vulnerable or declining worldwide. This study provides insight into how the failure to recognise local population declines can threaten the regional status of a common species like the bottlenose dolphin. Continued research and urgent conservation measures are therefore strongly recommended to prevent the disappearance of the bottlenose dolphin from the coasts of this South American country. [less ▲]

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See detailPopulation Genetic Structure Of Wild Phaseolus Lunatus (Fabaceae), With Special Reference To Population Sizes
Zoro Bi, I.; Maquet, A.; Baudoin, Jean-Pierre ULg

in American Journal of Botany (2003), 90(6), 897-904

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See detailPopulation history and gene dispersal inferred from spatial genetic structure of a Central African timber tree, Distemonanthus benthamianus (Caesalpinioideae)
Debout, G. D. G.; Doucet, Jean-Louis ULg; Hardy, O. J.

in Heredity (2011), 106

African rainforests have undergone major distribution range shifts during the Quaternary, but few studies have investigated their impact on the genetic diversity of plant species and we lack knowledge on ... [more ▼]

African rainforests have undergone major distribution range shifts during the Quaternary, but few studies have investigated their impact on the genetic diversity of plant species and we lack knowledge on the extent of gene flow to predict how plant species can cope with such environmental changes. Analysis of the spatial genetic structure (SGS) of a species is an effective method to determine major directions of the demographic history of its populations and to estimate the extent of gene dispersal. This study characterises the SGS of an African tropical timber tree species, Distemonanthus benthamianus, at various spatial scales in Cameroon and Gabon. Displaying a large continuous distribution in the Lower Guinea domain, this is a model species to detect signs of past population fragmentation and recolonization, and to estimate the extent of gene dispersal. Ten microsatellite loci were used to genotype 295 adult trees sampled from eight populations. Three clearly differentiated gene pools were resolved at this regional scale and could be linked to the biogeographical history of the region, rather than to physical barriers to gene flow. A comparison with the distribution of gene pools observed for two other tree species living in the same region invalidates the basic assumption that all species share the same Quaternary refuges and recolonization pathways. In four populations, significant and similar patterns of SGS were detected. Indirect estimates of gene dispersal distances (sigma) obtained for three populations ranged from 400 to 1200m, whereas neighbourhood size estimates ranged from 50 to 110. [less ▲]

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See detailPopulation of nonnative States of lysozyme variants drives amyloid fibril formation.
Buell, Alexander K.; Dhulesia, Anne; Mossuto, Maria F. et al

in Journal of the American Chemical Society (2011), 133(20), 7737-43

The propensity of protein molecules to self-assemble into highly ordered, fibrillar aggregates lies at the heart of understanding many disorders ranging from Alzheimer's disease to systemic lysozyme ... [more ▼]

The propensity of protein molecules to self-assemble into highly ordered, fibrillar aggregates lies at the heart of understanding many disorders ranging from Alzheimer's disease to systemic lysozyme amyloidosis. In this paper we use highly accurate kinetic measurements of amyloid fibril growth in combination with spectroscopic tools to quantify the effect of modifications in solution conditions and in the amino acid sequence of human lysozyme on its propensity to form amyloid fibrils under acidic conditions. We elucidate and quantify the correlation between the rate of amyloid growth and the population of nonnative states, and we show that changes in amyloidogenicity are almost entirely due to alterations in the stability of the native state, while other regions of the global free-energy surface remain largely unmodified. These results provide insight into the complex dynamics of a macromolecule on a multidimensional energy landscape and point the way for a better understanding of amyloid diseases. [less ▲]

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See detailPopulation parameters of African carp: Labeo parvus Boulenger, 1902 (Pisces: Cyprinidae) in the Ouémé River in Bénin (West Africa).
Montchowui, Elie; Laleye, Philippe; Moreau, J. et al

in North-Western Journal of Zoology (2009), 5(1)

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See detailPopulation trapping in the one-photon mazer
Bastin, Thierry ULg; Solano, E.

in Optics Communications (2003), 217

We study the population trapping phenomenon for the one-photon mazer. With this intent, the mazer theory is written using the dressed-state coordinate formalism, simplifying the expressions for the atomic ... [more ▼]

We study the population trapping phenomenon for the one-photon mazer. With this intent, the mazer theory is written using the dressed-state coordinate formalism, simplifying the expressions for the atomic populations, the cavity photon statistics, and the reflection and transmission probabilities. Under the population trapping condition, evidence for new properties of the atomic scattering is given. Experimental issues and possible applications are discussed. (C) 2003 Elsevier Science B.V. All rights reserved. [less ▲]

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See detailPopulation-level retrospective study of neurologically expressed disorders in ruminants before the onset of bovine spongiform encephalopathy (BSE) in Belgium, a BSE risk III country.
Saegerman, Claude ULg; Berkvens, D.; Claes, L. et al

in Journal of Clinical Microbiology (2005), 43(2), 862-9

A retrospective epidemiological study (n = 7,875) of neurologically expressed disorders (NED) in ruminants before the onset of the bovine spongiform encephalopathy epidemic (years studied, 1980 to 1997 ... [more ▼]

A retrospective epidemiological study (n = 7,875) of neurologically expressed disorders (NED) in ruminants before the onset of the bovine spongiform encephalopathy epidemic (years studied, 1980 to 1997) was carried out in Belgium. The archives of all veterinary laboratories and rabies and transmissible spongiform encephalopathy (TSE) epidemiosurveillance networks were consulted. For all species, a significantly higher number of NED with virological causes (rabies) was reported south of the Sambre-Meuse Valley. During the period 1992 to 1997, for which the data were complete, (i) the predicted annual incidence of NED varied significantly as a function of species and area (higher numbers in areas where rabies was present) but was always above 100 cases per million, and (ii) the mean incidence of suspected TSE cases and, among them, those investigated by histopathological examination varied significantly as a function of species and area. The positive predictive value of a presumptive clinical diagnosis of NED ranged from 0.13 (game) to 0.63 (sheep). Knowledge of the positive predictive value permits the definition of a reference point before certain actions (e.g., awareness and training campaigns) are undertaken. It also shows the usefulness of a systematic necropsy or complementary laboratory tests to establish an etiological diagnosis. TSE analysis of a small, targeted historical sampling (n = 48) permitted the confirmation of one case and uncovered another case of scrapie. The results of the present study help to develop and maintain the quality of the worldwide clinical epidemiological networks for TSE, especially in countries that in the past imported live animals, animal products, and feedstuffs from countries with TSE cases. [less ▲]

Detailed reference viewed: 38 (11 ULg)