References of "2021"
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See detailLes éventrations péristomiales
DETRY, Olivier ULiege

in AFISCEP.be mag (2021)

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See detailNew Proteins Contributing to Immune Cell Infiltration and Pannus Formation of Synovial Membrane from Arthritis Diseases
DE SENY, Dominique ULiege; Baiwir, Dominique ULiege; BIANCHI, Elettra ULiege et al

in International Journal of Molecular Sciences (2021), 23(1), 434

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See detailViruses of cucurbit crops: current status in the Mediterranean Region
Radouane, Nabil; Ezrari, Said; Belabess, Zineb et al

in Phytopathologia Mediterranea (2021), 60(3), 493-519

Cucurbits are among the most cultivated crops, and the most economically important species are melon (Cucumis melo L.), cucumber (Cucumis sativus L.), watermelon (Citrullus lanatus Thumb.), squash ... [more ▼]

Cucurbits are among the most cultivated crops, and the most economically important species are melon (Cucumis melo L.), cucumber (Cucumis sativus L.), watermelon (Citrullus lanatus Thumb.), squash (Cucurbita pepo L.), and pumpkin (Cucurbita spp.). These crops have become important income sources providing export and local consumption commodities in many Mediterranean countries. Increased area of cucurbits has led to the emergence of several viral diseases, which can have impacts on crop production and threaten agricultural sustainability. An overview of the most damaging cucurbit viruses in the Mediterranean area is provided to improve understanding of the diseases they cause and to emphasize effective disease management strategies. An updating of the geographical distribution of these viruses, the symptoms they cause and their means of transmission is also provided. Disease management methods and measures by farmers and phytosanitary authorities to address the virus outbreaks are outlined, including diagnostics, use of tolerant cultivars, and chemical and biological vector control. Mediterranean region farmers have learned many lessons from the damaging pandemics caused by cucurbit viruses, through the extensive published research, and this review provides a basis for managing future outbreaks of newly emerging virus infections. [less ▲]

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See detailChemical composition of essential oils from the leaves of Mosiera bullata (Britton & P.Wilson), an unexplored Cuban endemic species
Goya-Jorge, Elizabeth ULiege; Fernández Expósito, Osmary; Herrero-Martínez, José Manuel et al

in Journal of Essential Oil Research (2021), 33(6), 1-8

Mosiera Small is a genus of Myrtaceae family with about forty species identified, including the Cuban endemic plant Mosiera bullata (Britton & P.Wilson) Bisse subsp. bullata. Mosiera species have been ... [more ▼]

Mosiera Small is a genus of Myrtaceae family with about forty species identified, including the Cuban endemic plant Mosiera bullata (Britton & P.Wilson) Bisse subsp. bullata. Mosiera species have been little investigated, and this is the first study analysing the composition of Mosiera bullata. Fresh leaf samples of M. bullata were collected from different locations near Santa Clara city, Cuba, and their essential oil was extracted. Using GC/MS, nineteen components (89.68% of the oil) were identified. The major compounds were found to be 1,8-cineole and eugenol, and a GC/FID method was analytically validated for their quantification. Chromatograms (GC/FID) of the sixteen samples studied were proposed as a fingerprint of the volatile composition of M. bullata leaves. Chemometric methods assured the reliability of the chromatographic fingerprinting. Therefore, in the present work is suggested, for the first time, a reliable and consistent chemical profile of M. bullata essential oil. [less ▲]

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See detailExperimental Characterization of the VKI Longshot Mach 14 Contoured Nozzle
Kovács, Dániel Gábor ULiege; Zdenek, Ilich; Guillaume, Grossir et al

in Experimental Characterization of the VKI Longshot Mach 14 Contoured Nozzle (2021, December 29)

This paper presents the experimental characterization of the recently commissioned Mach~14 hypersonic nozzle of the Longshot gun tunnel. The Longshot facility of the von Karman Institute for Fluid ... [more ▼]

This paper presents the experimental characterization of the recently commissioned Mach~14 hypersonic nozzle of the Longshot gun tunnel. The Longshot facility of the von Karman Institute for Fluid Dynamics is a short-duration hypersonic wind tunnel, which is capable of reproducing the high Mach and Reynolds numbers experienced during most atmospheric re-entries. The free-stream flow conditions were measured at several stream-wise locations with a sting-supported arrangement of a pitot rake, a reference total pressure probe, a static pressure probe, a heat-flux probe, and an acoustic probe. The flow characteristics were inferred from the free-stream measurements using an elaborated rebuilding technique. The investigations cover the assessment of: flow uniformity in terms of Pitot pressure, tunnel noise level, core flow diameter, and useful test time. [less ▲]

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See detailUne invitation à vivre
Choffray, Jean-Marie ULiege

E-print/Working paper (2021)

Je ne me fais aucune illusion sur l’influence que pourrait avoir un professeur à la retraite... Nous vivons depuis deux ans avec un virus qui change notre vie et, plus encore, celles de nos enfants et ... [more ▼]

Je ne me fais aucune illusion sur l’influence que pourrait avoir un professeur à la retraite... Nous vivons depuis deux ans avec un virus qui change notre vie et, plus encore, celles de nos enfants et petits-enfants. Pourtant, nous disposons aujourd’hui d’informations fiables et valables sur la réalité des choses. Le plus important : vous n’êtes pas mort ; moi non plus ! Le temps est venu de s’assoir, de se taire et de penser (Sit down, Shut up and Think !). Pendant cette Éclipse de la Raison, le monde n’a pas cessé de se transformer, de progresser. Nous avons appris à modifier nos modes de communication, d’interaction et d’apprentissage. En perdant – temporairement ? – quelque liberté, nous en avons conquis de nouvelles. On n’a jamais autant joué, cuisiné, lu, échangé, médité (prié ?) qu’aujourd’hui. Une prise de conscience de l’importance de la vie familiale, de la vie professionnelle, et du respect de la Constitution, a vu le jour. Au cours de la phase de relativisme et de négation du sens que nous traversions, c’est un réveil utile. Le moment est venu d’octroyer quelques… titres et promotions ; de tourner la page sur des craintes déraisonnables ; et d’oser Vivre et Travailler. Cette Renaissance s’inscrit dans la Continuité de l’Histoire, éclairée des lueurs d’une plus Savante Ignorance. [less ▲]

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See detailJAZZMANIA : reviews décembre 2021
Sacré, Robert ULiege

in JAZZMANIA (2021)

JAZZMANIA ( www.jazzmania.be) : Reviews albums : Steve Strongman - Eddie 9 V - Rodd Bland

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See detailLe «Lubin», la comédie de Justine Favart et la colline de Spa
Droixhe, Daniel ULiege

E-print/Working paper (2021)

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See detailCRossroads ( Equinoxe FM 105.0) rediff., pt -1
Sacré, Robert ULiege

Diverse speeche and writing (2021)

"Crossroads" BLUES pt 1 : Eddie TAYLOR - Mercy Dee WALTON - WASHBOARD Sam - Willie COBBS

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See detailCrossroads ( Equinoxe FM 105.0) rediff., pt -2
Sacré, Robert ULiege

Diverse speeche and writing (2021)

"Crossroads": BLUES pt 2 Luther ALLISON - Chuck NORRIS ----- BLACK GOSPEL: The Sensational Gospelaires

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See detailSocial Museology and the Health Action Iny Karajá
Duarte Cândido, Manuelina Maria ULiege; Vial, Andréa Dias; Entratice, Henrique Gonçalves et al

in ICOFOM Study Series (2021), 49(1), 77-90

Drawing from Social Museology foundations, this document presents and analyses the actions carried out in 2020 as part of the research project called Karajá Presence: material culture, weaves, and ... [more ▼]

Drawing from Social Museology foundations, this document presents and analyses the actions carried out in 2020 as part of the research project called Karajá Presence: material culture, weaves, and colonial transits, launched in 2017. We show how a study of cartography and indigenous artefacts collections ended up leading a health campaign in support of the Iny Karajá people. This group holds the knowledge related to the production of ritxoko, clay dolls which are the subject of our investigation. Furthermore, we share with the reading public the understanding that life is the most significant heritage. Working for the survival of biological and cultural diversity must be a non-negotiable commitment of Museology since it is a domain that looks at the fate of things and their continuity. [less ▲]

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See detailThe Pastoral: New Trajectories in the Anthropocene (Editorial Introduction)
Rozzoni, Stefano; Lombard, David ULiege

in Ecocene: Cappadocia Journal of Environmental Humanities (2021), 2(2), 126-133

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See detailActualité d'Annette et Lubin: Spa, Marmontel et Fragonard
Droixhe, Daniel ULiege

E-print/Working paper (2021)

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See detailThe Pastoral: New Trajectories in the Anthropocene
Rozzoni, Stefano; Lombard, David ULiege

in Ecocene: Cappadocia Journal of Environmental Humanities (2021), 2(2), 126-263

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See detailAcceleration of Dynamic Ice Loss in Antarctica From Satellite Gravimetry
Diener, T.; Sasgen, I.; Agosta, C. et al

in Frontiers in Earth Sciences (2021)

The dynamic stability of the Antarctic Ice Sheet is one of the largest uncertainties in projections of future global sea-level rise. Essential for improving projections of the ice sheet evolution is the ... [more ▼]

The dynamic stability of the Antarctic Ice Sheet is one of the largest uncertainties in projections of future global sea-level rise. Essential for improving projections of the ice sheet evolution is the understanding of the ongoing trends and accelerations of mass loss in the context of ice dynamics. Here, we examine accelerations of mass change of the Antarctic Ice Sheet from 2002 to 2020 using data from the GRACE (Gravity Recovery and Climate Experiment; 2002–2017) and its follow-on GRACE-FO (2018-present) satellite missions. By subtracting estimates of net snow accumulation provided by re-analysis data and regional climate models from GRACE/GRACE-FO mass changes, we isolate variations in ice-dynamic discharge and compare them to direct measurements based on the remote sensing of the surface-ice velocity (2002–2017). We show that variations in the GRACE/GRACE-FO time series are modulated by variations in regional snow accumulation caused by large-scale atmospheric circulation. We show for the first time that, after removal of these surface effects, accelerations of ice-dynamic discharge from GRACE/GRACE-FO agree well with those independently derived from surface-ice velocities. For 2002–2020, we recover a discharge acceleration of -5.3 ± 2.2 Gt yr−2 for the entire ice sheet; these increasing losses originate mainly in the Amundsen and Bellingshausen Sea Embayment regions (68%), with additional significant contributions from Dronning Maud Land (18%) and the Filchner-Ronne Ice Shelf region (13%). Under the assumption that the recovered rates and accelerations of mass loss persisted independent of any external forcing, Antarctica would contribute 7.6 ± 2.9 cm to global mean sea-level rise by the year 2100, more than two times the amount of 2.9 ± 0.6 cm obtained by linear extrapolation of current GRACE/GRACE-FO mass loss trends. [less ▲]

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See detailJoyeux Noël et bonne année (local et de saison) !
Ozer, Pierre ULiege

Article for general public (2021)

Vous avez déjà fait le compte du nombre de pubs qui nous racontent des bobards, spécialement dans la grande distribution ? Chaque mois, carte blanche à Pierre Ozer, chargé de recherches à l’ Université de ... [more ▼]

Vous avez déjà fait le compte du nombre de pubs qui nous racontent des bobards, spécialement dans la grande distribution ? Chaque mois, carte blanche à Pierre Ozer, chargé de recherches à l’ Université de Liège. Un regard iconoclaste et caustique sur les différences entre les annonces des folders et la réalité des rayons. [less ▲]

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See detailMyD88 Mediates Colitis- and RANKL-Induced Microfold Cell Differentiation
Li, Yang; Yang, Shanshan; Huang, Xin et al

in Veterinary Sciences (2021), 9

Intestinal microfold (M) cells are critical for sampling antigens in the gut and initiating the intestinal mucosal immune response. In this study, we found that the oral administration of dextran sulfate ... [more ▼]

Intestinal microfold (M) cells are critical for sampling antigens in the gut and initiating the intestinal mucosal immune response. In this study, we found that the oral administration of dextran sulfate sodium (DSS) and Salmonella infection induced colitis. In the process, the expression levels ofM cell differentiation-related genes were synchronized with the kinetics of pro-inflammatory cytokines. Compared to wild-type (WT) mice, MyD88-/- mice exhibited significantly lower expression levels of M cell differentiation-related genes. However, DSS induced colitis in MyD88-/- mice but failed to promote the transcription of M cell differentiation related genes. Furthermore, the receptor activator of the Nuclear Factor-kB ligand (RANKL) upregulated the transcription of M cell differentiation related genes in murine intestinal organoids prepared from both WT and MyD88-/- mice. Meanwhile, fewer changes in M cell differentiation related genes were found in MyD88-/- mice as compared to WT mice. Hence, we concluded that myeloid differentiation factor 88 (MyD88) is an essential molecule for colitis- and RANKL-related differentiation of M cells. [less ▲]

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See detailGenetic structure and migration of Sitobion miscanthi populations in China
Sun, Jingxuan ULiege

Doctoral thesis (2021)

Sitobion miscanthi (Takahashi), a wheat aphid, is an economically damaging aphid pest and the dominant species in China. Migration and diffusion are not only important manifestations of population ... [more ▼]

Sitobion miscanthi (Takahashi), a wheat aphid, is an economically damaging aphid pest and the dominant species in China. Migration and diffusion are not only important manifestations of population dynamics, but also important ecological countermeasures for aphids to adapt to the environment. Migration, as the main physiological behavior characteristic of aphids, is the main reason for the difficulty in monitoring and forecasting. Temperature, wind and geographic location are the main abiotic factors for the migration of aphids. In this thesis, indoor and outdoor experiments were combined associated to methods of physiology and population genetics. Firstly, the physiological and reproductive parameters of different geographical populations of S. miscanthi at different temperatures and the life history traits of different populations during the growth and development period were investigated and analyzed. There was no significant difference in reproductive capacity within populations from northern China. In addition, latitude was positively correlated with aphids’ longevity. Secondly, eighteen geographical populations from China were studied by using one mitochondrial gene COI, one nuclear gene (EF-1α) and two endosymbiotic Buchnera genes (gnd and trpA). Two main natural migration pathways of S. miscanthi in China were observed: one was from Yunnan to the Sichuan Basin and another from Wuhan, Xinyang and Jiaodong Peninsula areas to the northwest. We inferred that these aphids appear first in the southwest and south regions and spread to the north with the help of the southeast and southwest monsoons, which occur in spring and summer. In autumn, aphids spread southward with the northeast and northwest monsoons. Finally, to clarify geographical structure of S. miscanthi in China and the factors affecting its distribution, we selected aphid samples from six geographic locations in China and analyzed the evolution history of genetic differentiation. Our 6 geographical populations of S. miscanthi were divided into three groups, Yinchuan, Suzhou, and other populations. Genetic structure analysis based on the mitochondrial (COI) and the symbiotic genes (gnd and trpA) were similar indicating that the symbiotic genes could act as potential molecular markers in studying the genetic structure and diversity of aphid populations. Difference in annual average temperature may be the reason for diversity genetic structure of S. miscanthi providing theoretical evidence of the aphid migration. It was speculated that S. miscanthi has seasonal migration patterns in wheat regions to allow prediction of potential aphids outbreaks in China. [less ▲]

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See detailWaste conversion for organic fertilizer and fungal production to promote crop plants and control pests
Liu, Xue ULiege

Doctoral thesis (2021)

A set of bottom-up interactions can be observed between soil, plant and pest. In rural areas, the discharge of livestock excrement is the main cause of water environmental pollution but with potential ... [more ▼]

A set of bottom-up interactions can be observed between soil, plant and pest. In rural areas, the discharge of livestock excrement is the main cause of water environmental pollution but with potential transformation into organic fertilizer using earthworms or black soldier flies. The use of such organic fertilizer alone or in combination with some fungi can affect pest growth and reproduction. The application of fungi also affected the growth and reproduction of pea aphid and fall armyworm. Firstly, dairy cattle farming produce large amounts of wastewater and it causes environmental pollution. Here, an improved vermicomposting system was applied to dairy farm wastewater with different combinations of organic substrates such as cow manure and rice straw in rural solid waste. Earthworm growth in vermicomposting were positively correlated with the C/N ratio, organic matter content and pH. Percentages of minerals increased in vermicomposting while organic matter content, C/N ratio, and cellulose declined as a function of the vermicomposting period. Final vermicompost was better for the absorption of plants. Continuous wastewater addition improved the effective transformation of organic waste to allow valorizing a broad range of organic residues, and avoid the risk of environmental pollution in dairy cattle farming. Secondly, multi-function fungi were used to promote plant growth. Inoculation with Phosphate-solubilizing microorganisms not only improved the growth of rape, but also increased phosphorus availability. We also obtained a novel gene from Penicillium oxalicum I1 whose overexpression in Escherichia coli increased the secretion of acetic acid helping to understand what was the function of the gene isolated from P. oxalicum as well as that of its homologs found in several other species of the Penicillium genus. Finally, fungi and compost were used to control pest included fall armyworm and pea aphid. Pest developmental durations were longer while reproductive ability was lower. Population dynamics of pests differed among the organic fertilizer treatments with vermi- or entomo-composts. Also, both entomopathogenic fungi and organic fertilizers effectively control aphids. Bioassays with Aspergillus flavus and A. niger allowed to control aphids To conclude, organic fertilizers and fungus synergistically reduced pest fertility and increased the death rate. To the best of our knowledge, this is the first report on the combined use of compost and multifunctional fungi to promote crop plants and synchronally control different pests such as aphid and moth. [less ▲]

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See detailPassive control of multiple structural resonances with piezoelectric vibration absorbers
Raze, Ghislain ULiege; Dietrich, Jennifer ULiege; Kerschen, Gaëtan ULiege

in Journal of Sound and Vibration (2021), 515

A novel sequential tuning procedure for passive piezoelectric shunts targeting multiple structural modes is proposed in this work. The control authority on each targeted mode can be quantitatively chosen ... [more ▼]

A novel sequential tuning procedure for passive piezoelectric shunts targeting multiple structural modes is proposed in this work. The control authority on each targeted mode can be quantitatively chosen ab initio and is shown to be limited by passivity requirements, which highlights the fundamental limitations of multimodal piezoelectric shunts. Based on effective characteristics of the piezoelectric system around resonance, electrical damping ratios and resonance frequencies are derived using well-established single-mode formulae from the literature, thereby fully specifying the characteristics of the shunt impedance. The proposed approach is numerically verified and experimentally validated on piezoelectric beams by emulating the shunt with a digital vibration absorber. [less ▲]

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