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See detailEPOCA/EUR-OCEANS data compilation on the biological and biogeochemical responses to ocean acidification
Nisumaa, A.-M.; Pesant, S.; Bellerby, R.G.J. et al

in Earth System Science Data (2010), 2

The uptake of anthropogenic CO2 by the oceans has led to a rise in the oceanic partial pressure of CO2, and to a decrease in pH and carbonate ion concentration. This modification of the marine carbonate ... [more ▼]

The uptake of anthropogenic CO2 by the oceans has led to a rise in the oceanic partial pressure of CO2, and to a decrease in pH and carbonate ion concentration. This modification of the marine carbonate system is referred to as ocean acidification. Numerous papers report the effects of ocean acidification on marine organisms and communities but few have provided details concerning full carbonate chemistry and complementary observations. Additionally, carbonate system variables are often reported in different units, calculated using different sets of dissociation constants and on different pH scales. Hence the direct comparison of experimental results has been problematic and often misleading. The need was identified to (1) gather data on carbonate chemistry, biological and biogeochemical properties, and other ancillary data from published experimental data, (2) transform the information into common framework, and (3) make data freely available. The present paper is the outcome of an effort to integrate ocean carbonate chemistry data from the literature which has been supported by the European Network of Excellence for Ocean Ecosystems Analysis (EUR-OCEANS) and the European Project on Ocean Acidification (EPOCA). A total of 185 papers were identified, 100 contained enough information to readily compute carbonate chemistry variables, and 81 data sets were archived at PANGAEA – The Publishing Network for Geoscientific & Environmental Data. This data compilation is regularly updated as an ongoing mission of EPOCA. Data access: http://doi.pangaea.de/10.1594/PANGAEA.735138 [less ▲]

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See detailWhat keeps us awake? The role of clocks and hourglasses, light, and melatonin.
Cajochen, Christian; Chellappa, Sarah Laxhmi ULg; Schmidt, Christina ULg

in International Review of Neurobiology (2010), 93

What is it that keeps us awake? Our assumption is that we consciously control our daily activities including sleep-wake behavior, as indicated by our need to make use of an alarm clock to wake up in the ... [more ▼]

What is it that keeps us awake? Our assumption is that we consciously control our daily activities including sleep-wake behavior, as indicated by our need to make use of an alarm clock to wake up in the morning in order to be at work on time. However, when we travel across multiple time zones or do shift work, we realize that our intentionally planned timings to rest and to remain active can interfere with an intrinsic regulation of sleep/wake cycles. This regulation is driven by a small region in the anterior hypothalamus of the brain, termed as the "circadian clock". This clock spontaneously synchronizes with the environmental light-dark cycle, thus enabling all organisms to adapt to and anticipate environmental changes. As a result, the circadian clock actively gates sleep and wakefulness to occur in synchrony with the light-dark cycles. Indeed, our internal clock is our best morning alarm clock, since it shuts off melatonin production and boosts cortisol secretion and heart rate 2-3h prior awakening from Morpheus arms. The main reason most of us still use artificial alarm clocks is that we habitually carry on a sleep depth and/or the sleep-wake timing is not ideally matched with our social/work schedule. This in turn can lead hourglass processes, as indexed by accumulated homeostatic sleep need over time, to strongly oppose the clock. To add to the complexity of our sleep and wakefulness behavior, light levels as well as exogenous melatonin can impinge on the clock, by means of their so-called zeitgeber (synchronizer) role or by acutely promoting sleep or wakefulness. Here we attempt to bring a holistic view on how light, melatonin, and the brain circuitry underlying circadian and homeostatic processes can modulate sleep and in particular alertness, by actively promoting awakening/arousal and sleep at certain times during the 24-h day. [less ▲]

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See detailUrbanisme : une politique de la ville
Frankignoulle, Pierre ULg

in Dubois, J.; Delhalle, N. (Eds.) Liège en effervescence. Le tournant des années 1970 (2010)

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See detailNutrition, environment and cardiovascular health (NESCAV): protocol of an inter-regional cross-sectional study.
Alkerwi, Ala'a; Guillaume, Michèle ULg; Zannad, Faiez et al

in BMC Public Health (2010), 10(1), 698

BACKGROUND: Despite the remarkable technological progress in health care and treatment, cardiovascular disease remains the leading cause of premature death, prolonged hospitalization and disability in ... [more ▼]

BACKGROUND: Despite the remarkable technological progress in health care and treatment, cardiovascular disease remains the leading cause of premature death, prolonged hospitalization and disability in most European countries. In the population of the Greater Region (Grand-Duchy of Luxembourg, Wallonia in Belgium, and Lorraine in France), the prevalence of cardiovascular risk factors and disease is among the highest in Europe, warranting the need for a better understanding of factors contributing to this pattern. In this context, the cross-border "Nutrition, Environment and Cardiovascular Health-NESCAV" project is initiated by an inter-regional multi-disciplinary consortium and supported by the INTERREG IV A program "Greater Region", 2007-2013, to fight synergically and harmoniously against this major public health problem. METHODS/DESIGN: The objectives of the three-year planned project are to assess, in a representative sample of 3000 randomly selected individuals living at the Greater Region, 1) the cardiovascular health and risk profile, 2) the association between the dietary habits and the cardiovascular risk, 3) the association of occupational and environmental pollution markers with the cardiovascular risk, 4) the knowledge, awareness and level of control of cardiovascular risk factors, 5) the potential gaps in the current primary prevention, and finally, to address evidence-based recommendations enabling the development of inter-regional guidance to help policy-makers and health care workers for the prevention of cardiovascular disease. DISCUSSION: The findings will provide tools that may enable the Greater Region's decision-makers and health professionals to implement targeted and cost-effective prevention strategies. [less ▲]

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See detailOptimal design of a CO2 absorption unit and assessment of solvent degradation
Léonard, Grégoire ULg

Conference (2010)

Presentation of the main research fields of my PhD thesis at the University of Liège

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See detailOut of Africa: north-westwards Pleistocene expansions of the heather Erica arborea
Desamore, Aurélie ULg

Poster (2010)

ntroduction Erica arborea L. is a dominant element of the circum-Mediterranean region. Its broad, disjunct distribution, ranging from Macaronesia to eastern Africa, is consistent with the fragmentation of ... [more ▼]

ntroduction Erica arborea L. is a dominant element of the circum-Mediterranean region. Its broad, disjunct distribution, ranging from Macaronesia to eastern Africa, is consistent with the fragmentation of the evergreen tropical forests that dominated Europe and North Africa in the Tertiary. (fig.1) Aim Is the current disjunct distribution of E. arborea a relict of a once wider distribution or a recent range expansion in response to the establishment of suitable conditions ? [less ▲]

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See detailA Family of Global Stabilizers for Quasi-Optimal Control of Planar Linear Saturated Systems
Forni, Fulvio ULg; Galeani, Sergio; Zaccarian, Luca

in IEEE Transactions on Automatic Control (2010), 55(5), 1175-1180

We propose a family of nonlinear state feedback global stabilizers for all planar linear systems which are globally stabilizable by bounded inputs (namely, all non exponentially unstable linear systems ... [more ▼]

We propose a family of nonlinear state feedback global stabilizers for all planar linear systems which are globally stabilizable by bounded inputs (namely, all non exponentially unstable linear systems). This family is parametrized by a nonlinear function whose selection can yield quasi time-optimal responses, where the "quasi" is required to achieve local exponential stability of the closed loop. The arising trajectories are quasi-time-optimal for arbitrarily large initial conditions; so, we expect the very simple proposed nonlinear control law to be very useful for embedded control applications with strong computational constraints. [less ▲]

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See detailStatistical process control and delivery chains
Faraz, Alireza ULg; Kazemzadeh, R.B.

in International Journal of Industrial Engineering & Production Research (2010), 21(3), 55-66

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See detailThe Circadian Clock and the homeostatic hourglass - two timepieces controlling Sleep and wakefulness
Chellappa, Sarah Laxhmi ULg; Cajochen, Christian

in Albercht, Urs (Ed.) The circadian clock (2010)

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See detailEquipement public et cohésion sociale. Construire une acte politique.
Dawance, Sophie ULg

in Cohen, Maurizio; Dassonville, Chantal (Eds.) Architectures, Wallonie-Bruxelles Inventaires # 0 Inventories 2005-2010 (2010)

L’architecture inscrit dans l’espace une prise de position par rapport à un contexte physique, social et culturel. A travers les choix opérés, elle participe en retour à la définition de ce contexte ... [more ▼]

L’architecture inscrit dans l’espace une prise de position par rapport à un contexte physique, social et culturel. A travers les choix opérés, elle participe en retour à la définition de ce contexte. L’architecture n’est donc jamais neutre. Peut-être est-ce plus significatif encore en ce qui concerne les équipements dits publics. Petit tour d’horizon en quelques traits choisis… [less ▲]

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See detailEtat de la biodiversité: les mammifères
Schockert, Vincianne ULg; Libois, Roland ULg

Learning material (2010)

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See detailL’imagerie Confocale : un Outil Performant pour le Génie des Procédés Biologiques
Louvet, Jean-Noël ULg; Attik, Ghania; Hupont, Sébastien et al

Poster (2010)

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See detailDe la mobilité de l’imaginaire socio-discursif des étudiants Erasmus
Meunier, Deborah ULg

in Synergies Pays Riverains de la Baltique (2010), 7

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See detailLes reconfigurations des politiques sociales
Vrancken, Didier ULg

Article for general public (2010)

L'augmentation du nombre d'étudiants bénéficiant de l'aide sociale s'inscrit dans un cadre plus large de mutations profondes que vivent nos sociétés, que cela soit le rôle des familles, le statut de la ... [more ▼]

L'augmentation du nombre d'étudiants bénéficiant de l'aide sociale s'inscrit dans un cadre plus large de mutations profondes que vivent nos sociétés, que cela soit le rôle des familles, le statut de la pauvreté ou bien la managérialisation du social. [less ▲]

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See detailNouvelles découvertes de la séquence holocène du Trou Al’Wesse : fouilles 2010
Miller, Rebecca ULg; Otte, Marcel ULg; Stewart, John

in Notae Praehistoricae (2010), 30

Excavations of the Holocene sequence at Trou Al'Wesse have yielded new elements related to Mesolithic occupations, in particular a human right mandible and a red deer antler hammer, as well as a possible ... [more ▼]

Excavations of the Holocene sequence at Trou Al'Wesse have yielded new elements related to Mesolithic occupations, in particular a human right mandible and a red deer antler hammer, as well as a possible Neolithic posthole. This article presents geological, archaeological and paleoanthropological data obtained during the 2010 season. [less ▲]

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See detailRadiative lifetime measurements and calculations of odd-parity highly excited levels in Ba I
Zhang, W; Palmeri, P; Quinet, Pascal ULg et al

in Physical Review. A (2010), 82

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