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See detailGreen chemistry and the biorefinery: an innovative sector for the walloon region
Richel, Aurore ULiege

Conference (2014, May)

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See detailGreen Chemistry in Wallonia. Focus on lignocellulosic transformations.
Richel, Aurore ULiege; Paquot, Michel ULiege

Conference (2011, February 10)

In the context of the valorisation of agricultural resources, the development of new sustainable strategies has gained attention. In this sense, this speech describes some major actions and contributions ... [more ▼]

In the context of the valorisation of agricultural resources, the development of new sustainable strategies has gained attention. In this sense, this speech describes some major actions and contributions undertaken in Wallonia around both “green chemistry” and “biorefinery” concepts. [less ▲]

Detailed reference viewed: 35 (12 ULiège)
See detailGreen Energy and Technology
Machrafi, Hatim ULiege

Book published by Bentham Science Publishers (2012)

This new book presents recent developments, state-of-the-art and progresses in the field of energy where efforts are done in order to improve the usability of energy systems, reducing their environmental ... [more ▼]

This new book presents recent developments, state-of-the-art and progresses in the field of energy where efforts are done in order to improve the usability of energy systems, reducing their environmental impact. The book aims at providing researchers, academics, engineers and advanced students information and points of discussion, a platform for future improvements in green energy. Both theoretical and applied aspects are treated in this book. Many illustrations and mathematical equations as well as practical on-the-field applications are incorporated. This book aims at contributing to the increasing interest in reducing the environmental impact of energy as well as its further development. Three parts are considered. The first part treats different energy applications and the efforts that are done in order to improve their impact on the environment. It deals with bio-energy, well-to-wheel analyses and heavy oils. Concerning bioenergy, the costs are evaluated under strict regulations imposed by a climate stabilization target, where a certain case is taken as example. The well-to-wheel energy analyses take into consideration a comprehensive study on greenhouse gases and certain criteria that concern the emissions in the case of hydrogen based fuel-cells. The second part deals with different kinds of renewable energy sources. The chapters discuss bioenergy, wind energy and solar energy. The use of biofuels is critically discussed. A real application and evaluation of wind energy is presented, by means of designing and optimalizing a wind power system. A detailed discussion about the generation of electricity by means of different kinds of solar energy is performed. The third part puts emphasis on alternative energy processes for transport utilities. In this part, is discussed, amongst others, the Homogeneous Charge Compression Ignition combustion mode. Advantages and inconveniences are proposed. Wide and comprehensive studies on this combustion mode are presented. Both a large synthesis of available work and experimental results are used in an effort to discuss these advantages and inconveniences in order to propose possible solutions. Some examples are treated elaborately. Hydrogen-based combustion is discussed and its efficiency evaluated in detail. Elaborate studies and examples give a rather complete vision of the probable use of hydrogen in internal combustion engines and the different aspects that are to be examined are treated in detail. The commercialization of fuel-cells are investigated, giving trends and possible developments that can be envisaged. Finally, a philosophy of controlling the auto-ignition in an HCCI engine is presented. This philosophy is somewhat general and the outlines can also be used for the abovementioned transportation modes. A rather general overview is given in this book, starting from different visions on reducing the impact of energy on the environment (green energy) and continuing on how this can be achieved (green technology). The different results and the available literature that is treated in various chapters in this book show that many researchers are investigating the efficient use of energy whilst looking for ways to decrease its impact on the environment. This shows the importance of such research and the work that remains to be done. [less ▲]

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See detailGreen first ! ORBi, le choix d’une politique
Thirion, Paul ULiege

Conference (2012, November 16)

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See detailThe Green Grid Network and Trading Renewable Energy
Ernst, Damien ULiege

Speech/Talk (2016)

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See detailGreen infrastructure for Tomorrow. – Together (GIFT-T)
Lord-Tarte, E; Condé, Gilles ULiege; Marek, A et al

Report (2015)

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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 ▲]

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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

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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

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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 ▲]

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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 ▲]

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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 ▲]

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See detailGreen roofs and facades : toward food and biodiversity functions
Mahy, Grégory ULiege; Jijakli, Haissam ULiege

Scientific conference (2014, November 12)

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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 ▲]

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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 ▲]

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