Browsing
     by title


0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

or enter first few letters:   
OK
Full Text
Peer Reviewed
See detailThe green lacewings in Belgium (Neuroptera : Chrysopidae)
Bozsik, Andras; Mignon, Jacques ULiege; Gaspar, Charles

in Acta Zoologica Academiae Scientiarum Hungaricae (2002), 48(Suppl. 2), 53-59

There are merely three published sources of information on the green lacewings in Belgium. The first two were written by a Belgian and a Catalan author at the beginning of the 20th century and the third ... [more ▼]

There are merely three published sources of information on the green lacewings in Belgium. The first two were written by a Belgian and a Catalan author at the beginning of the 20th century and the third was published in 1980. Interestingly, the most recent study reported the fewest species (11), the most previous contained 12 and the second one showed 17 species, This confused situation and the paucity of data initiated the authors to identify the green lacewing collection of the Gembloux University of Agricultural Sciences, where lacewings from different parts of Belgium were preserved, and also to collect chrysopids regularly, Summarising the species reported in the literature and caught during sampling, 18 green lacewing species have been verified in Belgium: Nothochrysa fulviceps, Nothochrysa capitata, Hypochrysa elegans, Nineta flava, Nineta vittata, Nineta pallida, Chrysotropia ciliata, Chrysopa perla, Chrysopa dorsalis, Chrysopa abbreviata, Chrysopa formosa, Chrysopa phlyllochroma, Chrysopa pallens, Dichochrysa flavifrons, Dichochrysa prasina, Dichochrysa ventralis, Chrysoperla carnea, Cunctochrysa albolineata. Considering the known references, one species, Nineta pallida proved to be new for the Belgian fauna. [less ▲]

Detailed reference viewed: 114 (1 ULiège)
Full Text
Peer Reviewed
See detailGreen leaf area decline of the last three leaves of wheat. Determination of the relationships with remote sensing green land cover.
Mackels, Christophe; Tychon, Bernard ULiege

in Italian Journal of Agronomy [=IJA] = Rivista di Agronomia (2008), 3(3), 671-672

Detailed reference viewed: 35 (6 ULiège)
Full Text
Peer Reviewed
See detailGreen leaf area decline of wheat top three leaves in Belgium and G-D of Luxembourg from 2003 to 2005 : the relationships with grain yield.
Martin, B.; El Jarroudi, Moussa ULiege; Tychon, Bernard ULiege

in Bibliotheca fragmenta agronomica - Book of proceedings (2006), 11(1), 167-168

Detailed reference viewed: 30 (3 ULiège)
Full Text
Peer Reviewed
See detailGreen leaf area decline of wheat top three leaves in Belgium and G-D of Luxembourg from 2003 to 2006 : the relationships with grain yield.
Martin, B.; Tychon, Bernard ULiege; El Jarroudi, Moussa ULiege et al

Conference (2006, October)

The modified Gompertz model developed by Gooding et al. (2000) was used to describe the decline in green area of wheat top three leaves in field experiments where green leaf area at time t = 100*exp[-exp ... [more ▼]

The modified Gompertz model developed by Gooding et al. (2000) was used to describe the decline in green area of wheat top three leaves in field experiments where green leaf area at time t = 100*exp[-exp(-k*(t-m))]. In the absence of fungicide, green leaf area decline was associated with drought or infection with a number of foliar pathogens including Septoria tritici (sexual stage Mycospherella graminicola) and Puccinia recondita f.sp. tritici and Erysiphe graminis. On the whole experiments and cultivars there was no effect of fungicide on k but it was highly significant on m (P<0.001). When main effects are considered, fungicide delayed green leaf area decline rather than reduced its rate of progress once started. Fungicide had variable effects on grain yield, largely reflecting variation in disease infection pressures in the different years and susceptibility of the different cultivars. If no correlation was observed between k values and grain yields, m was at the contrary very closely associated with grain yields. This study supports the view of Gooding (2000) and Gaunt (1995) that, for many diseases, effects on green area duration give an adequate estimate of host yield reduction. Therefore we have use the close relationship between the parameter m of the Gompertz model and grain yield to improve the Belgium-Crop Growth Monitoring System (B-CGMS) by recalibrating LAI evolution simulated by B-CGMS according to the evolution of LAI derived from the Gompertz model. The system includes indeed a component allowing taking into account senescence in the evolution of LAI during the growing season. Recalibration has been realized through the modification of one of the parameters influencing the leaf senescence, the SPAN parameter. Modifying the SPAN parameter comes down to modify the lifespan of leaves. Considering that parasitic pressure reduces leaves lifespan and therefore the photosynthetic capacity, this approach makes it possible to take into account the influence of this pressure on yield predictions in the Belgian Crop Growth Monitoring System. [less ▲]

Detailed reference viewed: 55 (5 ULiège)
Full Text
Peer Reviewed
See detailGreen mamba peptide targets type-2 vasopressin receptor against polycystic kidney disease
Ciolek, Justyna; Reinfrank, Helen; Quinton, Loïc ULiege et al

in Proceedings of the National Academy of Sciences of the United States of America (2017)

Polycystic kidney diseases (PKDs) are genetic disorders that can cause renal failure and death in children and adults. Lowering cAMP in cystic tissues through the inhibition of the type-2 vasopressin ... [more ▼]

Polycystic kidney diseases (PKDs) are genetic disorders that can cause renal failure and death in children and adults. Lowering cAMP in cystic tissues through the inhibition of the type-2 vasopressin receptor (V2R) constitutes a validated strategy to reduce disease progression. We identified a peptide from green mamba venom that exhibits nanomolar affinity for the V2R without any activity on 155 other G-protein–coupled receptors or on 15 ionic channels. Mambaquaretin-1 is a full antagonist of the V2R activation pathways studied: cAMP production, beta-arrestin interaction, and MAP kinase activity. This peptide adopts the Kunitz fold known to mostly act on potassium channels and serine proteases. Mambaquaretin-1 interacts selectively with the V2R through its first loop, in the same manner that aprotinin inhibits trypsin. Injected in mice, mambaquaretin-1 increases in a dose-dependent manner urine outflow with concomitant reduction of urine osmolality, indicating a purely aquaretic effect associated with the in vivo blockade of V2R. CD1-pcy/pcy mice, a juvenile model of PKD, daily treated with 13 μ𝝁g of mambaquaretin-1 for 99 d, developed less abundant (by 33%) and smaller (by 47%) cysts than control mice. Neither tachyphylaxis nor apparent toxicity has been noted. Mambaquaretin-1 represents a promising therapeutic agent against PKDs. [less ▲]

Detailed reference viewed: 43 (4 ULiège)
Full Text
See detailGreen Roof Potential in Arab Cities
Attia, Shady ULiege

Article for general public (2014)

Urban green roofs have long been promoted as an easy and effective strategy for beautifying the built environment and increasing investment opportunity. The building roof is very important because it has ... [more ▼]

Urban green roofs have long been promoted as an easy and effective strategy for beautifying the built environment and increasing investment opportunity. The building roof is very important because it has a direct impact on thermal comfort and energy conservation in and around buildings. Urban green roofs can help to address the lack of green space in many urban areas. Urban green roofs provides the city with open spaces that helps reduce urban heat island effect and provides the human population on the site with a connection to the outdoors. However, we must differentiate between two types of urban green roofs and assess their adaptability to Arab cities. This article provides an insight on green roofs and roof farming in Arab cities. [less ▲]

Detailed reference viewed: 82 (4 ULiège)
See detailGreen roofs and facades : toward food and biodiversity functions
Mahy, Grégory ULiege; Jijakli, Haissam ULiege

Scientific conference (2014, November 12)

Detailed reference viewed: 57 (9 ULiège)
Peer Reviewed
See detailGreen Roofs in Cairo: A Holistic Approach for Healthy Productive Cities
Attia, Shady ULiege; Mahmoud, A.

in Proceedings of 7th Annual Greening Rooftops for Sustainable Communities (2009, June)

In Cairo, the amount of green space per inhabitant is roughly equivalent to 0.33 square meters per person (3.5 square feet), one of the lowest proportions in the world. Green roofs are presented in this ... [more ▼]

In Cairo, the amount of green space per inhabitant is roughly equivalent to 0.33 square meters per person (3.5 square feet), one of the lowest proportions in the world. Green roofs are presented in this study mainly as an urban landscape for healthy and productive cities. This paper describes the idea of green roofs as platform for urban faming that is considered as a holistic approach to solve environmental, spatial, social and economic problems in large cities in the developing countries. The first part of the study, presents the theoretical framework for roof farming. Potentials and problems of green roofs are analyzed and mapped in a multilayered method. The goal is to find out what the maximum potentials of productive green rooftops and determine the best techniques for maintaining them. As a result, the research presents a set of design principles, guidelines and tools that can assist in transforming existing roofs into productive roof farms. The second part of the study examines successful case studies in Cairo, including schools and residential units and introduces a broader function of roof gardens, as well as the barriers for successful implementation. The final result, point to the importance of considering green roofs as creative development opportunity for urban open spaces, responsive support for bio and food security, in addition to the climatic, environmental and aesthetical benefits. Finally, the paper presents the more interesting results and explains why this approach is successful and how the results can be extended to other cities. [less ▲]

Detailed reference viewed: 293 (4 ULiège)
See detailGreen strategies applied to the synthesis of polymer particles for protein delivery
Alaimo, David ULiege

Doctoral thesis (2015)

With the recent progresses in biotechnology that enable the production of various peptides and proteins, there is a growing interest for their use as therapeutic agents. Indeed, since the introduction of ... [more ▼]

With the recent progresses in biotechnology that enable the production of various peptides and proteins, there is a growing interest for their use as therapeutic agents. Indeed, since the introduction of the first recombinant therapeutic protein, human insulin, 30 years ago, the interest for pharmaceutical proteins have increased remarkably for various therapeutic purposes. Nevertheless, several challenges still remain such as the preservation of the quite fragile complex protein structure of these proteins to warrant their therapeutic activity after storage and administration into the body. Protecting them against chemical/enzymatic degradation from the environment is a prerequisite to efficiency. To reach this goal and prolong/trigger the release of therapeutic proteins in the body, different carriers were developed and investigated. Among them, polymer nanogels and microcpasules appear as quite promising systems. The thesis focuses on the preparation of novel carriers for protein delivery while using “green” strategies. More precisely, protein carriers are produced by two approaches. The first one investigates the preparation of hydrophilic nanogels by free radical dispersion polymerization of hydroxyethyl methacrylate (HEMA) in supercritical carbon dioxide. The development of dedicated stabilizers efficient in this green medium is thus first considered particularly focussing on the study of the influence of the stabilizer architecture. Then, the optimized candidate is used for the size- controlled nanogels preparation. A strategy allowing the removal of the hydrophobic component of the stabilizer is then investigated based on the synthesis of a photocleavable copolymer. The performances of these as-obtained novel nanogels to load and release proteins is then investigated. In a second approach, the synthesis of protein-loaded microcapsules offering a tunable permeability in response to the external glucose concentration is investigated. For that purpose, the layer-by-layer assembly of dedicated copolymer polyelectrolytes including glucose-sensitive diol/boronic acid bonds was performed on the surface of protein-loaded calcium carbonate particles. After dissolution of the calcium salt, microcapsules able to tune the release of the encapsulated protein in response to glucose concentration are obtained. [less ▲]

Detailed reference viewed: 47 (8 ULiège)
Full Text
Peer Reviewed
See detailGreen synthesis and antioxidant activity of new PEGylated ferulic acids
Nicks, Francois ULiege; Richel, Aurore ULiege; Richard, Gaetan ULiege et al

in Tetrahedron Letters (2012), 53(19), 2402-2405

PEGylation of ferulic acid is described through a green esterification process involving poly(ethylene glycol) (PEG) with three different average molecular weights (200, 400 and 1000 g/mol) as both ... [more ▼]

PEGylation of ferulic acid is described through a green esterification process involving poly(ethylene glycol) (PEG) with three different average molecular weights (200, 400 and 1000 g/mol) as both reactive and solvent. Esterification with PEG400 and PEG1000 leads to original compounds soluble in all proportions in water. These new compounds display an antioxidant activity similar to that of ferulic acid. [less ▲]

Detailed reference viewed: 68 (9 ULiège)
See detailGreen synthesis of polyphosphoesters, a promising class of bioinspired degradable materials
Lecomte, Philippe ULiege; Baeten, Evelien

Conference (2015, September 11)

Detailed reference viewed: 23 (0 ULiège)
Full Text
Peer Reviewed
See detailA Greener Common Agricultural Policy Towards 2020 And Its Implementation in Wallonia
Burny, Philippe ULiege

in Ozunu, Alexandru (Ed.) The 10th Elsedima International Conference : Book of abstracts “Environmental Legislation, Safety Engineering and Disaster Management”, September 18th-19th, 2014, Cluj-Napoca, Romania : 10th Anniversary (2014)

ln order to implement the new Common Agricultural Policy agreed upon in 2013, the Walloon government had to make some choices, left to the Member States or the regions within them, which is the case in ... [more ▼]

ln order to implement the new Common Agricultural Policy agreed upon in 2013, the Walloon government had to make some choices, left to the Member States or the regions within them, which is the case in Belgium. ln January 2014, it was decided to implement the green payment (which is compulsory) proportionally to the basic payments, the payment for young farmers (compulsory) at its maximum authorized level (2% of the total envelope for direct payments), an additional payment for the first 50 hectares (payment which is left to the choice of the Member State/region), coupled payments (including 2.1 % of the regional envelope for direct payments for pastures and forage area), and the basic payment (compulsory, representing 26.7 % of the total regional envelope for direct payments only in Wallonia). [less ▲]

Detailed reference viewed: 13 (2 ULiège)
Full Text
Peer Reviewed
See detailGreenhouse gas emissions from livestock production in rural area of Algeria, the case of Chemini (Kabylie)
Moula, Nassim ULiege; Salhi, A.; Touazi, L. et al

in Livestock Research for Rural Development (2015), 27(10),

The Algerian agricultural sector faces the challenge to meet the food needs of its population despite low agricultural capacity, resulting in increasing pressure on natural resources. This paper aims to ... [more ▼]

The Algerian agricultural sector faces the challenge to meet the food needs of its population despite low agricultural capacity, resulting in increasing pressure on natural resources. This paper aims to inventory the greenhouse gas (GHG) emissions related to livestock sector in the rural area of Chemini (province of Bejaia), taking into account the emissions due to enteric fermentation, in the form of methane, and manure management, in the form of methane and nitrous oxide. Emissions intensity, expressed in CO2- equivalents (CO2-eq) per kg of edible protein, was included in the study. Ruminants contribute to 94% of livestock GHG emissions and to 53% of protein production, with a large share due to cattle. The main part of emissions is related to enteric fermentation. High-producing cattle present the lowest emission intensity of the ruminant category with 24 kg CO2-eq per kg protein. Chickens produce 2.7% of livestock related emissions but provide 47% of animal protein. It results in low emission intensities whereas important difference is noticed between backyard and industrialized systems (around 21 versus 1 kg CO2-eq per kg protein, respectively). Improvement of animal performance should contribute to mitigate the environmental impact of livestock production in Algeria. [less ▲]

Detailed reference viewed: 97 (26 ULiège)
Full Text
Peer Reviewed
See detailGreenhouse gas-related climate changes and some expected skin alterations.
Pierard, Sébastien ULiege; PIERARD, Gérald ULiege; Hermanns-Lê, Trinh ULiege et al

in Austin Journal of Dermatology (2014), 1

Detailed reference viewed: 14 (0 ULiège)
Full Text
Peer Reviewed
See detailGreening of the Common Agricultural Policy: Implementation in Wallonia (South of Belgium)
Burny, Philippe ULiege

in Quality - Access to Success (2014), 15(Suppl. 1), 103-105

In order to implement the new Common Agricultural Policy agreed upon in 2013, the Walloon government had to make some choices, left to the Member States or the regions within them, which is the case in ... [more ▼]

In order to implement the new Common Agricultural Policy agreed upon in 2013, the Walloon government had to make some choices, left to the Member States or the regions within them, which is the case in Belgium. In January 2014, it was decided to implement the green payment (which is compulsory) proportionally to the basic payments, the payment for young farmers (compulsory) at its maximum authorized level (2% of the total envelope for direct payments), an additional payment for the first 50 hectares (payment which is left to the choice of the Member State/region), coupled payments (including 2.1 % of the regional envelope for direct payments for pastures and forage area), and the basic payment (compulsory, representing 26.7 % of the total regional envelope for direct payments only in Wallonia). [less ▲]

Detailed reference viewed: 20 (0 ULiège)
Full Text
Peer Reviewed
See detailGreening the Common Agricultural Policy (CAP). The Analysis of Developments
Habran, Maxime ULiege

in Punctul Critic, Quarterly social, political and cultural diagnostic (2012), 6

Detailed reference viewed: 50 (2 ULiège)
Full Text
Peer Reviewed
See detailGreenland [in "State of the Climate in 2008"]
Box, J.; Bai, L.; Benson, R. et al

in Bulletin of the American Meteorological Society (2009), 90

An abnormally cold winter across the southern half of Greenland led to substantially higher west coast sea ice thickness and concentration. Even so, record-setting summer temperatures around Greenland ... [more ▼]

An abnormally cold winter across the southern half of Greenland led to substantially higher west coast sea ice thickness and concentration. Even so, record-setting summer temperatures around Greenland, combined with an intense melt season (particularly across the northern ice sheet), led the 2008 Greenland climate to be marked by continued ice sheet mass deficit and floating ice disintegration. [less ▲]

Detailed reference viewed: 25 (3 ULiège)