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See detail"Gérer ses émotions et agir : Pleine conscience et ACT" : Etude préliminaire de l'efficacité d'un groupe thérapeutique
Wagener, Aurélie ULiege; Dierickx, Christophe; Herbeuval, Sandrine et al

Poster (2014, December 16)

Introduction : L’apprentissage de la gestion des émotions est une demande très fréquente en psychothérapie. Les techniques issues des programmes de pleine conscience et des thérapies d’acceptation et ... [more ▼]

Introduction : L’apprentissage de la gestion des émotions est une demande très fréquente en psychothérapie. Les techniques issues des programmes de pleine conscience et des thérapies d’acceptation et d’engagement ont notamment pour objectif de guider les clients dans cet apprentissage. Afin de répondre à cette demande, nous avons mis en place un groupe « Gérer ses émotions et agir : pleine conscience et ACT » et mené une recherche-action afin d’en tester l’efficacité. Méthodologie : Le cycle thérapeutique comportait 3 séances (3x3 heures) sur un délai de 6 semaines et 2 temps d’évaluation (avant la première séance [T0] et après la dernière [T1]). Les évaluations adminis-trées aux différents temps concernaient les données socio-démographiques, l’humeur, le niveau de pleine conscience, la flexibilité psychologique, le niveau d’engagement dans des activités, la mo-tivation et le sentiment d’auto-efficacité. Résultats : Cinq adultes (M âge = 37,46; ET = 7,96) ont participé à ce premier cycle. Les analyses prélimi-naires indiquent un effet significatif du facteur temps (N = 5). Ainsi, une augmentation du niveau d’engagement dans des activités (F(1) = 20,07, p = 0,01), de la motivation (F(1) = 15,00, p = 0,02) et du sentiment d’auto-efficacité (F(1) = 17,48, p = 0,02) est observée entre le T0 et le T1. Conclusion : Les résultats préliminaires semblent indiquer que les participants au groupe thérapeutique tirent des bénéfices de la participation à ce cycle thérapeutique. La récolte des données et la constitution d’un groupe contrôle se poursuivent. Les résultats seront plus longuement discutés lors du congrès. [less ▲]

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See detailLa mémoire du génocide des Juifs chez les jeunes. Connaissances, émotions et évaluations
Grandjean, Geoffrey ULiege

in Questions de mémoire et de représentation (2014)

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See detailHistoWeb - Toward a new learning ecology for histology
Vincke, Grégoire ULiege; Marée, Raphaël ULiege; Wehenkel, Louis ULiege et al

Conference (2014, December 16)

HistoWeb targets the transformation of the professional tool Cytomineinto a comprehensive and innovative teaching platform, valuing the notions of learning ecology and new learning dimensions seeking for ... [more ▼]

HistoWeb targets the transformation of the professional tool Cytomineinto a comprehensive and innovative teaching platform, valuing the notions of learning ecology and new learning dimensions seeking for lifelong competencies. The poster was released at the Digital Learning round table, organized by the European Commission around H2020 funding instruments and call 2 "ICT-20 Technologies for better human learning" [less ▲]

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See detailLe genre Erythrophleum (Fabaceae) en Afrique, un modèle pour l’étude des mécanismes de différenciation de niches climatiques
Gorel, Anaïs ULiege; Duminil, Jérôme; Doucet, Jean-Louis ULiege et al

Conference (2014, December 16)

Comprendre l’origine des patrons de diversité est un défi en écologie des communautés et en écologie évolutive, notamment dans le contexte du futur changement climatique. Ce poster aura deux objectifs : i ... [more ▼]

Comprendre l’origine des patrons de diversité est un défi en écologie des communautés et en écologie évolutive, notamment dans le contexte du futur changement climatique. Ce poster aura deux objectifs : i) présenter pourquoi le genre Erythrophleum en Afrique est un modèle d’étude idéal à la compréhension des mécanismes de différenciation de niche et de spéciation au sein d’une lignée d’arbre en région tropicale; ii) mettre en lumière les démarches statistiques et expérimentales permettant de valider et de comprendre ces mécanismes. Le genre Erythrophleum, largement distribué en Afrique, est représenté par quatre espèces d’arbre : E. ivorense, E. suaveolens, E. africanum et E. lasianthum. Ces espèces morphologiquement très proches, présentent des aires de distribution géographiques et climatiques adjacentes. Elles sont distribuées de façon parapatrique sur un gradient pluviométrique, du plus humide pour E. ivorense ou plus sec pour E. lasianthum. Ce mode de distribution apparent, combiné à des données issues d’études phylogénétiques, suggère un rôle majeur des gradients climatiques comme pilotes des différenciations spécifiques du genre et pourrait donc confirmer l’hypothèse du gradient écologique (« The ecological gradient hypothesis » suppose que des gradients environnementaux peuvent induire des spéciations parapatriques sans que les populations ne soient isolées géographiquement. Néanmoins, des études sur les niches climatiques et leurs degrés de conservatisme sont indispensables pour valider cette hypothèse. Aujourd’hui, ces études sont rendues plus aisées grâce au développement de nouvelles techniques de modélisation des niches environnementales (Species Distribution Model ou SDM) et de tests statistiques de quantification du conservatisme/divergence de niche (voire Warren et al., 2008). En complément de la modélisation des niches observées (c.à.d. niches réalisées selon la définition de Hutchison (1957)), il est intéressant de comprendre les stratégies fonctionnelles sous-jacentes aux différenciations de niche. Les différenciations de niche au sein des espèces du genre sont probablement issues d’une distinction de leurs stratégies d’utilisation des ressources (lumière/eau) et de leurs différents positionnements au sein du slow-fast continuum (sensu Reich, 2014). Cette hypothèse peut être testée par la mise en place d’expériences en milieu contrôlé mesurant les réponses des individus à des stress environnementaux. [less ▲]

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See detailAnxiété et dépression chez l'enfant parentifié. Mieux identifier pour mieux intervenir.
Haxhe, Stéphanie ULiege; Stassart, Martine ULiege; D'Amore, Salvatore ULiege

Poster (2014, December 16)

La parentification reste un phénomème mal connu. Pourtant, les conséquences pour l'enfant sont à prendre au sérieux.

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See detailFirst Evidence of a Volatile Sex Pheromone in Lady Beetles
Fassotte, Bérénice ULiege; Fischer, Christophe ULiege; Durieux, Delphine ULiege et al

in PLoS ONE (2014)

To date, volatile sex pheromones have not been identified in the Coccinellidae family; yet, various studies have suggested that such semiochemicals exist. Here, we collected volatile chemicals released by ... [more ▼]

To date, volatile sex pheromones have not been identified in the Coccinellidae family; yet, various studies have suggested that such semiochemicals exist. Here, we collected volatile chemicals released by virgin females of the multicolored Asian lady beetle, Harmonia axyridis (Pallas), which were either allowed or not allowed to feed on aphids. Virgin females in the presence of aphids, exhibited “calling behavior”, which is commonly associated with the emission of a sex pheromone in several Coleoptera species. These calling females were found to release a blend of volatile compounds that is involved in the remote attraction (i.e., from a distance) of males. Gas Chromatography-Mass Spectrometry (GC-MS) analyses revealed that (–)-β-caryophyllene was the major constituent of the volatile blend (ranging from 80 to 86%), with four other chemical components also being present; β-elemene, methyl-eugenol, α-humulene, and α-bulnesene. In a second set of experiments, the emission of the five constituents identified from the blend was quantified daily over a 9-day period after exposure to aphids. We found that the quantity of all five chemicals significantly increased across the experimental period. Finally, we evaluated the activity of a synthetic blend of these chemicals by performing bioassays which demonstrated the same attractive effect in males only. The results confirm that female H. axyridis produce a volatile sex pheromone. These findings have potential in the development of more specific and efficient biological pest-control management methods aimed at manipulating the behavior of this invasive lady beetle. [less ▲]

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See detailEnvironmental changes in developing countries: from moving to trapped populations
Ozer, Pierre ULiege; De Longueville, Florence ULiege; Zickgraf, Caroline ULiege et al

in Young Researchers Overseas' Day - Book of Abstracts (2014, December 16)

Over the last decades, environmental changes driven and/or compounded by population pressures and climate change have dramatically impacted human mobility, including population displacements or migration ... [more ▼]

Over the last decades, environmental changes driven and/or compounded by population pressures and climate change have dramatically impacted human mobility, including population displacements or migration, especially in developing countries. Slow onset degradation processes (aridification, desertification, wind and water erosion, deforestation, shoreline erosion, etc.) and sudden disasters (extreme climate events such as floods, droughts, storms, heat waves, etc.) have intensified since the 1950s in terms of frequency, intensity and duration, as well as in their socio-economic consequences. In the absence of an international objective to reduce greenhouse gas emissions, global warming and its wide range of negative impacts are not likely to be contained in the future [...] [less ▲]

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See detailPhytochemical Study of Plants of Interest for Cosmetics in Mayotte
Saive, Matthew ULiege; Fauconnier, Marie-Laure ULiege; Danflous, Jean-Paul

Poster (2014, December 16)

This study takes place in a bigger project aiming to identify and to make an inventory of the French Pharmacopeia. Its aim is to identify plants or plant families regularly used in traditional cosmetics ... [more ▼]

This study takes place in a bigger project aiming to identify and to make an inventory of the French Pharmacopeia. Its aim is to identify plants or plant families regularly used in traditional cosmetics in Mayotte. In order to give a direction to the research, two technics where used. At first, the plants and their families used in the pharmacopeia of neighboring regions were inventoried using the literature. The resulting inventory was then compared with the flora of the Mahoran territory. The second technique was the realization of a semi-structured survey with people known for their plant-use knowledge in Mayotte. In order to have significant results, the ethnobotanical survey was done following Trotter & Logan’s protocol. (1986) According to that protocol, the gathered data has to be the following: common name, place of harvest, part used and the posology. Moreover the number of informant has to be big enough in order to integrate the data in several indicators such as: The informant agreement ration (IAR), the fidelity level (FL) and use value (UV). The number of informant was determined based on the population density of the different communes of the island. Another critical factor for this study is the correct identification of each sample. To achieve that when a sample was realized, it was taken twice. One for the analysis, the second sample was pressed and dried so as to enter a herbarium for identification. The last important step of this part of the study is the development of fast technics to establish the samples’ physiological activity. These test will give us qualitative information in order the isolate the plants that show a true potential. The targeted activities and tests being: - Anti-tyrosinase activity through an inhibition of tyrosinase test. - Anti-free-radicals activity through the DPPH test. - Anti-inflammatory activity through an inhibition of lipoxygenase an cyclooxygenase test The following steps of the study is the complete analysis of the physiologically active plants extracts in order to identify the active molecules. The end of the study will result in the creation of cosmetics originating from Mayotte’s flora. The way the cosmetics will be developed is thought so as it can be easily and durably done in Mayotte allowing this study to have a positive impact on the development of the island. [less ▲]

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See detailApplication de la diffusion Raman exaltée de surface à la détection de petites molécules d'intérêt : le lactate
Dumont, Elodie ULiege

Master's dissertation (2014)

Surface-enhanced Raman spectroscopy, much more sensitive than normal Raman spectroscopy, was chosen as a « Green Chemistry » analytical tool to develop a quantitative approach for sodium lactate at ... [more ▼]

Surface-enhanced Raman spectroscopy, much more sensitive than normal Raman spectroscopy, was chosen as a « Green Chemistry » analytical tool to develop a quantitative approach for sodium lactate at physiological concentrations detection. Indeed, the lactate is an important biomarker involved in many diseases, including Age-Related Macular Degeneration. Different nanoparticles’ synthesis were performed and characterized to ensure their repetability. These nanoparticles were then put into contact with lactate in order to detect this metabolite with a good sensitivity. The next step was the functionalization of the nanoparticles’ surface with the aim of increasing sensitivity and selectivity of the detection. Among the capping agents tested, (11-mercaptoundécyl)-N,N,N-triméthylammonium bromide, a quaternary ammonium compound, was selected and the experimental conditions were optimized with the help of a design of experiments. Once again, lactate quantification was performed. Detection was possible from 0,1 to 7,5 mM. Finally, detection of dried spots of lactate in water and in phosphate buffer was possible through the same functionalization agent. [less ▲]

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See detailProgramme de revalidation multidisciplinaire post-cancer du sein : analyse des bénéfices éventuels sur la fonction physique et la qualité de vie
LECLERC, Anne-France ULiege; FOIDART-DESSALLE, Marguerite ULiege; COUCKE, Philippe ULiege et al

in AFPSA - 8e congrès francophone, Psychologie de la Santé - Evolutions sociales, innovations & politiques - Résumé des communications (2014, December 16)

Introduction : Le cancer du sein ainsi que ses traitements sont à l'origine de nombreux effets secondaires indésirables. L'objectif de l'étude est de déterminer les bénéfices éventuels, tant sur le plan ... [more ▼]

Introduction : Le cancer du sein ainsi que ses traitements sont à l'origine de nombreux effets secondaires indésirables. L'objectif de l'étude est de déterminer les bénéfices éventuels, tant sur le plan physique que psychologique, d’un programme de revalidation multidisciplinaire chez des femmes ayant été traitées pour un cancer du sein. Méthodologie : 122 patientes ont été recrutées, 61 faisant partie du groupe contrôle et 61 du groupe traité. Celui-ci a bénéficié d’une revalidation de trois mois comprenant un entraînement physique supervisé et diverses sessions psycho-éducatives. Les évaluations, effectuées avant et après la prise en charge, ont inclus des mesures anthropométriques et de composition corporelle, une évaluation des capacités fonctionnelles et différents questionnaires. Résultats : Au terme des trois mois, l’état de santé (qualité de vie), le rôle fonctionnel, l’état émotionnel et les fonctions physiques, cognitives et sociales s’améliorent significativement au sein du groupe traité. Cette observation s’applique également aux symptômes de fatigue, d'insomnie, de douleur, de dyspnée, de perte d'appétit, d’anxiété et de dépression ainsi qu'aux paramètres physiques obtenus par l'intermédiaire des évaluations fonctionnelles. Au sein du groupe contrôle, ces améliorations n’apparaissent pas et une augmentation significative de l'indice de masse corporelle et du pourcentage de graisse corporelle est observée. Conclusion : Cette étude préliminaire montre ainsi la faisabilité et les effets bénéfiques d’une prise en charge multidisciplinaire chez des femmes au terme de leurs traitements pour le cancer du sein. [less ▲]

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See detailÉvolutions démographiques et défis en matière de logement : le cas de la Wallonie
Halleux, Jean-Marie ULiege

Conference (2014, December 16)

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See detailEffets de deux associations culturales à base de blé sur les populations de pucerons (Homoptera: Aphididae) et d’auxiliaires aphidiphages: étude préliminaire menée en Chine
Chevalier Mendes Lopes, Thomas ULiege; Bosquée, Emilie ULiege; Honba, David et al

in Entomologie Faunistique (2014), 67

Crop associations have several advantages when plant species and crop production methods, including harvesting, are well selected. This preliminary study was conducted in the Shandong province (China) to ... [more ▼]

Crop associations have several advantages when plant species and crop production methods, including harvesting, are well selected. This preliminary study was conducted in the Shandong province (China) to better characterize the effect of wheat (Triticum aestivum L.)/oilseed rape (Brassica napus L.) and wheat/pea (Pisum sativum L.) associations on the aphid and aphidophagous beneficial populations. Aphids observed on wheat tillers were significantly more abundant in the pure stand of wheat during the two weeks prior to their population peak, compared with crop associations. Considering the aphidophagous beneficials, significantly more ladybirds were observed in the associations, compared with the pure stand during their abundance peak. Yellow pan traps were also used to assess the diversity and abundance of adult beneficial species. The parasitoid species Aphidius gifuensis (Ashmead) was prevalent. Among predators, Propylea japonica (Thunberg) and Harmonia axyridis (Pallas) were the most abundant species. This study contributes to better understand the potential of crop associations with wheat as a sustainable method to control aphid populations in this region of China. [less ▲]

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See detailLe ePortfolio comme outil pour rassembler des preuves de sa compétence
Poumay, Marianne ULiege

Diverse speeche and writing (2014)

Le portfolio permet à l'étudiant d'intégrer ses expériences formelles et informelles dans un dossier, parfois électronique, qui rend compte de ses apprentissages et de sa réflexivité. Ce type de dossier ... [more ▼]

Le portfolio permet à l'étudiant d'intégrer ses expériences formelles et informelles dans un dossier, parfois électronique, qui rend compte de ses apprentissages et de sa réflexivité. Ce type de dossier est de plus en plus souvent utilisé pour évaluer les étudiants au terme d'un programme de plusieurs années d'études. Aussi exigeant pour l'enseignant que pour l'étudiant, il entre en résonance avec les notions d'intégration, de complexité et de compétence. [less ▲]

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See detailValue addition of some Moroccan regional products by liquid fermentation: production of date and apple vinegars
Mounir, Majid ULiege; Shafiei, Rasoul; Zarmehrkhorshid, Razieh et al

Poster (2014, December 16)

Six strains of acetic acid bacteria were isolated from Moroccan local products and evaluated for their industrial vinegar production potential. Two of them, namely AF01 and CV01, isolated from apple ... [more ▼]

Six strains of acetic acid bacteria were isolated from Moroccan local products and evaluated for their industrial vinegar production potential. Two of them, namely AF01 and CV01, isolated from apple (Malus domestica) and cactus (Opuntia ficus-indica) fruits, respectively, were selected and investigated for their thermoresistant and thermophilic properties. A biochemical and molecular study based on a 16SrDNA gene sequence analysis confirmed that the two isolated strains belong to Acetobacter pasteurianus with 99 % of homology. Their growth and acetic acid production capacity were compared with (1) the thermoresistant reference strain A. senegalensis isolated from mango (Senegal) and (2) other, wild acetic strains belonging to A. pasteurianus (LMG 1632, LMG 1607, LMG 1701, DSM 2324 and DSM 4491). The two strains showed very good growth and noticeable acetic acid production ability at high temperatures (38 to 41°C). A thermophilic character was noted for AF01 strain. Indeed, this bacterium grew better at 38 than at 30°C. Subsequently, a semi-continuous fermentation was performed in a 20L Bioreactor for both selected strains. A total amount of 7.64% and 10.08% acetic acid was achieved at the end of fermentation, respectively for AF01 and CV01 strains. Process fermentation of CV01 strain was marked by the ability to produce gluconic acid during acetic fermentation. Finally, an enzymatic study was carried out on the selected strains AF01 and CV01 to confirm the tolerance of their enzymes responsible for acetic fermentation process to high temperature. Results clearly showed that the two strains exhibited high ADH and ALDH enzyme activity at either 30 or 38 °C as compared to the mesophilic reference strain LMG 1632 which exhibited marked thermal inactivation rate. It is concluded that the two selected strains are well-suited to industrial use for vinegar production in Morocco. [less ▲]

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See detailEffets de l'intégration des cultures fruitières sur l'environnement rural au Burundi. Cas du fruit de la passion dans la Commune Matongo
Bashangwa Mpozi, Bosco ULiege; Ndimanya, Patrice; Lebailly, Philippe ULiege

Poster (2014, December 16)

Le fruit de la passion est récemment adopté et contribue à garantir la sécurité alimentaire des ménages. Cependant, les systèmes culture pratiqués sont assez mal connues et les effets induits par cette ... [more ▼]

Le fruit de la passion est récemment adopté et contribue à garantir la sécurité alimentaire des ménages. Cependant, les systèmes culture pratiqués sont assez mal connues et les effets induits par cette adoption ne sont pas connus. D’où l’intérêt de cette étude. [less ▲]

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See detailInnovative algorithms to combine phenotypic, genealogical and genomic information originating from diverse sources
Vandenplas, Jérémie ULiege

Doctoral thesis (2014)

Along with technical developments, international exchanges of genetic material (e.g., frozen semen, embryos) have increased since the 1970s. However, genetic evaluations are traditionally based on ... [more ▼]

Along with technical developments, international exchanges of genetic material (e.g., frozen semen, embryos) have increased since the 1970s. However, genetic evaluations are traditionally based on phenotypic and genealogical data which are internally recorded, i.e., within well defined borders. Because imported (i.e., external) genetic material is usually strongly selected in their respective populations, internal genetic evaluations for external animals could be biased and less accurate if external data used for their selection is ignored. Moreover, comparison of internal and external animals based on their internal and external estimates of genetic merit is needed to select and potentially import the most suitable ones according to the internal breeding goal. However, such comparison is usually not possible among internal and external genetic evaluations due, e.g., to differences among units of measurement. Thereby, several approaches and algorithms have been developed to render internal and external genetic evaluations comparable, and to combine or blend phenotypic and genealogical data and external information, i.e., estimates of genetic merit and associated reliabilities. Furthermore, the recent development of genomic selection also increased needs for combining phenotypic, genealogical and genomic data and information. Therefore, the aim of this thesis was first to develop innovative algorithms to combine diverse sources of phenotypic, genealogical and genomic data and information, and second to test them on simulated and real data in order to check their correctness. Based on a Bayesian view of the linear mixed models and addressing several issues highlighted by previous studies, systems of equations combining simultaneously diverse sources of data and external information were developed for (multivariate) genetic and single-step genomic evaluations. Double counting of contributions due to relationships and due to records were considered as well as computational burden. The performances of the developed systems of equations were evaluated using simulated datasets and real datasets originating from genetic (genomic) evaluations for Holstein cattle and for show jumping horses. The different results showed that the developed equations integrated and blended several sources of information in a proper way into a genetic or a single-step genomic evaluation.It was also observed that double counting of contributions due to relationships and due to records was (almost) avoided. Furthermore, more reliable estimates of genetic merit were also obtained for external animals and for their relatives after integration of external information. Also, the developed equations can be easily adapted to complex models, such as multivariate mixed models. Indeed, it was shown that external information correlated to the internal phenotypic traits was properly integrated using the developed equations. Finally, research of this thesis led to the development of a genomic evaluation system for Holstein cattle in the Walloon Region of Belgium for production traits, as well as for other traits, like somatic cell score. Based on the research of this thesis, future research topics, e.g., concerning integration of correlated external information and of genomic information, were finally presented. [less ▲]

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See detailMulti-wavelength observations of Jupiter's aurora coordinated with Hisaki and other space telescopes
Kimura, Tomoki; Badman, Sarah; Tao, Chihiro et al

Conference (2014, December 15)

From January to April 2014, two observing campaigns by multi-wavelength remote sensing from X-ray to radio were performed to uncover energy transport process in Jupiter’s plasma environment using space ... [more ▼]

From January to April 2014, two observing campaigns by multi-wavelength remote sensing from X-ray to radio were performed to uncover energy transport process in Jupiter’s plasma environment using space telescopes and ground-based facilities. These campaigns were triggered by the new Hisaki spacecraft launched in September 2013, which is an extremely ultraviolet (EUV) space telescope of JAXA designed for planetary observations. In the first campaign in January, Hubble Space Telescope (HST) made imaging of far ultraviolet (FUV) aurora with a high special resolution (0.08”) through two weeks while Hisaki continuously monitored aurora and plasma torus emissions in EUV wavelength with a high temporal resolution (1 min<). We discovered new magnetospheric activities from the campaign data: e.g., internally-driven type auroral brightening associated with hot plasma injection, and plasma and electromagnetic filed modulations in the inner magnetosphere externally driven by the solar wind modulation. The second campaign in April was performed by Chandra X-ray Observatory (CXO), XMM newton, and Suzaku satellite simultaneously with Hisaki. Relativistic auroral accelerations in the polar region and hot plasma in the inner magnetosphere were captured by the X-ray space telescopes simultaneously with EUV monitoring of aurora and plasma torus. Auroral intensity in EUV indicated a clear periodicity of 45 minutes whereas the periodicity was not evident in X-ray intensity although previous observations by CXO indicated clear 40-minute periodicity in the polar cap X-ray aurora. In this presentation, we show remarkable scientific results obtained these campaigns. [less ▲]

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