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See detailRevisiting the SN1987A gamma-ray limit on ultralight axion-like particles
Payez, Alexandre ULg; Evoli, Carmelo; Fischer, Tobias et al

in Journal of Cosmology and Astroparticle Physics [= JCAP] (in press)

We revise the bound from the supernova SN1987A on the coupling of ultralight axion-like particles (ALPs) to photons. In a core-collapse supernova, ALPs would be emitted via the Primakoff process, and ... [more ▼]

We revise the bound from the supernova SN1987A on the coupling of ultralight axion-like particles (ALPs) to photons. In a core-collapse supernova, ALPs would be emitted via the Primakoff process, and eventually convert into gamma rays in the magnetic field of the Milky Way. The lack of a gamma-ray signal in the GRS instrument of the SMM satellite in coincidence with the observation of the neutrinos emitted from SN1987A therefore provides a strong bound on their coupling to photons. Due to the large uncertainty associated with the current bound, we revise this argument, based on state-of-the-art physical inputs both for the supernova models and for the Milky-Way magnetic field. Furthermore, we provide major amendments, such as the consistent treatment of nucleon-degeneracy effects and of the reduction of the nuclear masses in the hot and dense nuclear medium of the supernova. With these improvements, we obtain a new upper limit on the photon-ALP coupling: g_{a\gamma} < 5.3 x 10^{-12} GeV^{-1}, for m_a < 4.4 x 10^{-10} eV, and we also give its dependence at larger ALP masses. Moreover, we discuss how much the Fermi-LAT satellite experiment could improve this bound, should a close-enough supernova explode in the near future. [less ▲]

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See detailBiomarkers and physiolpathology in the cardiorenal syndrome
BOUQUEGNEAU, Antoine ULg; KRZESINSKI, Jean-Marie ULg; DELANAYE, Pierre ULg et al

in Clinica Chimica Acta (in press)

Acute cardiorenal syndrome (CRS) corresponds to an association of acute heart failure and a worsening of renal function. The detection of acute kidney injury (AKI) unfortunately occurs at a late stage of ... [more ▼]

Acute cardiorenal syndrome (CRS) corresponds to an association of acute heart failure and a worsening of renal function. The detection of acute kidney injury (AKI) unfortunately occurs at a late stage of CRS, leading to an increased mortality of the patients. In this review, we described the pathophysiology of CRS and discussed the potential interest of biochemical biomarkers (namely creatinine, cystatin C, NGAL, KIM-1, fatty acid binding protein, Nacetyl-β-D-glucosaminidase and IL-18) that could potentially help to detect AKI earlier and thus reduce the morbi-mortality of the patients suffering from CRS. [less ▲]

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See detailVitamin D status after a high dose of cholecalciferol in healthy and burn subjects
ROUSSEAU, Anne-Françoise ULg; DAMAS, Pierre ULg; LEDOUX, Didier ULg et al

in Burns : Journal of the International Society for Burn Injuries (in press)

Background: Burn patients are at risk of vitamin D (VD) deficiency and may benefit from its pleiotropic effects as soon as acute phase. Aim of this observational study was to assess effects of a ... [more ▼]

Background: Burn patients are at risk of vitamin D (VD) deficiency and may benefit from its pleiotropic effects as soon as acute phase. Aim of this observational study was to assess effects of a cholecalciferol (VD3) bolus on VD status in adult burn patients (Group B, GB) after admission, compared to healthy subjects (Group H, GH). Methods: Both groups received an oral dose of 100,000 IU VD3. Blood samples were collected before (D0) and 7 days (D7) after bolus to measure 250H-D, 1,25(OH)2-D, parathyroid hormone (PTH) and fibroblast growth factor 23 (FGF23). Albumin (ALB) and VD binding protein (DBP) were measured and used to calculate free 25OH-D level. Data were expressed as median (min–max) or proportions. Results: A total of 49 subjects were included: 29 in GH and 20 in GB. At D0, prevalence of VD deficiency was higher in GB: 25OH-D was 21.5 (10.1–46.3) ng/ml in GH vs 11 (1.8–31.4) ng/ml in GB. DBP and ALB were lower in GB. At D7, DBP was stable in both groups while ALB decreased in GB. 25OH-D increased by 66.6 (13.5–260.3)% in GH. In GB, changes in 25OH-D extended from 36.7% to 333.3% with a median increase of 33.1%. Similar changes were observed in each group for free 25OH-D. High FGF23 levels were observed in GB. Conclusions: This study highlighted the differences in VD status and in response to a high dose VD3 in burn patients when compared to healthy patients. Pitfalls in VD status assessment are numerous during acute burn care: 25OH-D measurement needs cautious interpretation and interest of free 25OH-D is still questionable. They should not prevent burn patients to receive VD supplements during acute care. Higher doses than general recommendations should probably be considered. [less ▲]

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See detailA fresh look on the limit on ultralight axion-like particles from SN1987A
Payez, Alexandre ULg

in 10th Patras Workshop on Axions, WIMPs and WISPs (in press)

We revisit the limit on very light axion-like particles (ALPs) from the absence of gamma rays coincidental with the neutrino burst from SN1987A. We use updated supernova simulations, modern models for the ... [more ▼]

We revisit the limit on very light axion-like particles (ALPs) from the absence of gamma rays coincidental with the neutrino burst from SN1987A. We use updated supernova simulations, modern models for the magnetic field inside the Galaxy, and a Primakoff cross section which takes into account proton-degeneracy and mass-reduction effects. We finally give an updated exclusion plot for the electromagnetic coupling of sub-eV ALPs, comparing our new bound with other limits as well as with future ALP searches. [less ▲]

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See detailA morphological novelty for feeding and sound production in the yellowtail clownfish
Olivier, Damien ULg; Frederich, Bruno ULg; Herrel, Anthony et al

in Journal of Experimental Zoology. Part A, Comparative Experimental Biology (in press)

The yellowtail clownfish Amphiprion clarkii is able to close its mouth very quickly by means of the cerato-mandibular (c-md) ligament, a synapomorphic trait of Pomacentridae joining the hyoid bar to the ... [more ▼]

The yellowtail clownfish Amphiprion clarkii is able to close its mouth very quickly by means of the cerato-mandibular (c-md) ligament, a synapomorphic trait of Pomacentridae joining the hyoid bar to the medial part of the lower jaw. This fast closure induces tooth collision, thus producing sounds that the clownfish uses during agonistic behaviors. To investigate whether this rapid jaw movement is also used during feeding, we analyzed the kinematics of sound production and feeding. Sound production, feeding on live planktonic prey, and feeding on food attached to tweezers were filmed with a high-speed camera. Three kinds of kinematic patterns were detected and were associated with the two different types of food presented: one performed to catch planktonic prey (PP), and two (called B-1 and B-2) to bite attached food items. The kinematic pattern of B-2 is similar to that observed during sound production (SP) and the transection of the c-md ligament highlights that sound production and biting-2 motions are dependent on this morphological trait. Our data show that the c-md ligament in addition to its role in sound production allows duplication of the mouth closing mechanism during feeding. This highlights the key role played by the c-md ligament in sound production and feeding on attached prey. [less ▲]

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See detailAnorexie et intersubjectivité : Étude phénoménologique et éthologique
Englebert, Jérôme ULg

in Annales Médico-Psychologiques (in press)

Objective: Based on the case study of Jeanne, the objective of this article is to study patterns of anorexic people’s specific being-in-the-world. We seek to identify the core vulnerability features of ... [more ▼]

Objective: Based on the case study of Jeanne, the objective of this article is to study patterns of anorexic people’s specific being-in-the-world. We seek to identify the core vulnerability features of anorexic existence, beyond the dimension of feeding alone. The identification of a psychopathological structure will result in a better understanding of Jeanne’s clinical situation and will help to formulate psychotherapeutic and prophylactic recommendations. Method: A phenomenological and ethological approach allows us to see past the strictly medical symptoms (eating disorder). The evolutionary perspective highlights the adaptive dimension of this disorder (e.g., in extreme situations such as famine). Specifically, Demaret’s ethological hypothesis identifies altruism (feeding altruism and generalized altruism) as the core feature of anorexic conduct. Phenomenological reflection (phenomenological psychopathology and phenomenological philosophy) appears to complement the ethological approach. Phenomenology distinguishes two kinds of bodies: the Leib (emotional, subjective and experienced in the first person) and the Körper (devitalized, objective and experienced in the second person). Merleau-Ponty’s works highlight the difference between the touching body and the touched body. These proposals show the problematic of the other in body configuration. It is in precisely this connection that anorexic existence is specific. Sartre’s phenomenology and the lived-body-for-others is the final step of our reasoning to arrive at a configuration of intersubjectivity. Results: The analysis of Jeanne’s case, combined with ethological and phenomenological perspectives, demonstrates that the real psychopathological structure of anorexic subjectivity rests on specific interaction modes. The notions of altruism, lived-body-for-others, and intersubjectivity highlight an emotional existence including shame in the eyes of others, and especially an imbalance between self-preservation and care for others. Conclusions: All our thinking suggests that so-called “denial” is a psychological mechanism that should be reconsidered. Denial is not a mechanism of anorexic subjects alone, but is also a process encountered both in the patient’s family and in the therapeutic environment. Anorexic denial is based on anosognosia and the refusal to see one’s own thinness, while other people’s denial constitutes a widespread inability to perceive the altruism and intersubjective problematic on which the existence of an anorexic subject fundamentally depends. [less ▲]

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See detailIchthyosaurs from the Jurassic of Skye, Scotland
Brusatte, S. L.; Young, M. T.; Challands, T. J. et al

in Scottish Journal of Geology (in press)

Fossils of Mesozoic vertebrates are rare in Scotland, particularly specimens of marine reptiles such as plesiosaurs and ichthyosaurs. We describe a suite of ichthyosaur fossils from the Early to Middle ... [more ▼]

Fossils of Mesozoic vertebrates are rare in Scotland, particularly specimens of marine reptiles such as plesiosaurs and ichthyosaurs. We describe a suite of ichthyosaur fossils from the Early to Middle Jurassic of Skye, which to our knowledge are the first ichthyosaurs from Scotland to be described and figured in detail. These fossils span approximately 30 million years, from the Sinemurian to the Bathonian, and indicate that ichthyosaurs were a major component of Scottish marine faunas during this time. The specimens include isolated teeth that could represent the most northerly known occurrences of the widespread Sinemurian species Ichthyosaurus communis, a characteristic component of the famous Lyme Regis faunas of England, suggesting that such faunas were also present in Scotland during the Early Jurassic. An associated humerus and vertebrae from Toarcian–Bajocian-aged deposits are named as a new genus and species of basal neoichthyosaurian, Dearcmhara shawcrossi. The taxonomic affinities of this taxon, which comes from a critical but poorly sampled interval in the fossil record, suggest that non-ophthalmosaurid neoichthyosaurians dominated European assemblages around the Early–Middle Jurassic boundary, and were later replaced by ophthalmosaurids, whose radiation likely took place outside Europe. Many of these specimens were collected by amateurs and donated to museum collections, a co-operative relationship essential to the preservation of Scotland’s fossil heritage. [less ▲]

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See detailDevonian antiarch placoderms from Belgium revisited
Olive, Sébastien ULg

in Acta Palaeontologica Polonica (in press)

Anatomical, systematic, and paleobiogeographical data on the Devonian antiarchs from Belgium are reviewed, updated and completed thanks to new data from the field and re-examination of paleontological ... [more ▼]

Anatomical, systematic, and paleobiogeographical data on the Devonian antiarchs from Belgium are reviewed, updated and completed thanks to new data from the field and re-examination of paleontological collections. The material of Bothriolepis lohesti Leriche, 1931 is enhanced and the species better described. An undetermined species of Bothriolepis is recorded from the Famennian of Modave (Liège Province), one species of Asterolepis redescribed from the Givetian of Hingeon and another one described from the Givetian of Mazy (Namur Province). Grossilepis rikiki sp. nov. is recorded from the Famennian tetrapod-bearing locality of Strud (Namur Province) and from the Famennian of Moresnet (Liège Province). It is the first occurrence of Grossilepis after the Frasnian and on the central southern coast of the Euramerican continent. Its occurrence in the Famennian of Belgium may be the result of a late arrival from the Moscow Platform and the Baltic Depression, where the genus is known from Frasnian deposits. Remigolepis durnalense sp. nov. is described from the Famennian of Spontin near Durnal (Namur Province). Except for the doubtful occurrence of Remigolepis sp. in Scotland, this is the first record of this genus in Western Europe. Its occurrence in Belgium reinforces the strong faunal affinities between Belgium and East Greenland and the hypothesis of a hydrographical link between the two areas during the Late Devonian. [less ▲]

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See detailFaire les courses au quotidien. L’approvisionnement alimentaire d’un groupe de migrantes marocaines en Italie en temps de crise
Mescoli, Elsa ULg

in Matagne, Geoffroy; Van Ingelgom, Virginie (Eds.) Actes du colloque Politiques de crise, crises du politique (in press)

La crise généralisée qui, depuis quelques années, a affaibli les économies de nombre d’états, a eu des conséquences sur la typologie des migrations internationales : les trajectoires, les projets, les ... [more ▼]

La crise généralisée qui, depuis quelques années, a affaibli les économies de nombre d’états, a eu des conséquences sur la typologie des migrations internationales : les trajectoires, les projets, les destinations, les départs se sont modifiés en fonction de nouveaux facteurs auxquels les individus et les groupes étaient confrontés . A côté de ces macro-dynamiques globales, la crise a également engendré des changements dans la vie quotidienne des migrants lorsqu’ils étaient déjà partis et qu’ils s’étaient déjà installés ailleurs. Dans ce cadre, ma contribution vise à analyser les pratiques d’approvisionnement alimentaire d’un groupe de migrantes marocaines en Italie mettant en place des stratégies pour faire face aux conséquences concrètes de la crise économique (notamment la diminution de leur pouvoir d’achat en conséquence de leur précarité professionnelle). Au travers de plusieurs déplacements dans la ville où elles habitaient et de la mobilisation des réseaux familiaux alimentant des circuits informels d’échange de biens, ces femmes satisfaisaient leurs différentes exigences – parmi lesquelles le désir de performer des préparations propres à leur mémoire incorporée – tout en répondant aux contraintes économiques déterminées par la crise. Je vais ainsi démontrer qu’en dépit des difficultés rencontrées, ces femmes arrivaient à exercer une agency dans le nouvel espace vécu et à se positionner de façon active au travers de leurs choix et conduites quotidiennes. [less ▲]

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See detailGold nanorods coated with mesoporous silica shell as drug delivery system for remote near infrared light-activated release and potential phototherapy
Liu, Ji; Detrembleur, Christophe ULg; De Pauw-Gillet, Marie-Claire ULg et al

in Small (Weinheim an der Bergstrasse, Germany) (in press)

In this study, we report the synthesis of a nanoscaled drug delivery system, which is composed of a gold nanorod-like core and a mesoporous silica shell (GNR@MSNP) and partially uploaded with phase ... [more ▼]

In this study, we report the synthesis of a nanoscaled drug delivery system, which is composed of a gold nanorod-like core and a mesoporous silica shell (GNR@MSNP) and partially uploaded with phase-changing molecules (1-tetradecanol, TD, Tm 39 degrees C) as gatekeepers, as well as its ability to regulate the release of doxorubicin (DOX). Indeed, a nearly zero premature release is evidenced at physiological temperature (37 degrees C), whereas the DOX release is efficiently achieved at higher temperature not only upon external heating, but also via internal heating generated by the GNR core under near infrared irradiation. When tagged with folate moieties, GNR@MSNPs target specifically to KB cells, which are known to overexpress the folate receptors. Such a precise control over drug release, combining with the photothermal effect of GNR cores, provides promising opportunity for localized synergistic photothermal ablation and chemotherapy. Moreover, the performance in killing the targeted cancer cells is more efficient compared with the single phototherapeutic modality of GNR@MSNPs. This versatile combination of local heating, phototherapeutics, chemotherapeutics and gating components opens up the possibilities for designing multifunctional drug delivery systems. [less ▲]

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See detailAre Children Conservative, Liberal or Metacognitive? Preliminary Evidence for the Involvement of the Distinctiveness Heuristic in Decision Making
Geurten, Marie ULg; Willems, Sylvie ULg; Meulemans, Thierry ULg

in Journal of Experimental Child Psychology (in press)

The present experiment investigates whether young children are able to reduce their false recognition rate after distinctive encoding by implementing a strategic metacognitive rule. Seventy-two children ... [more ▼]

The present experiment investigates whether young children are able to reduce their false recognition rate after distinctive encoding by implementing a strategic metacognitive rule. Seventy-two children, aged 4, 6, and 9 years, studied two lists of unrelated items. One of these lists was visually displayed (picture condition) while the other was presented auditorily (word condition). After each study phase, participants completed recognition tests. Finally, they answered questions about their explicit knowledge of the distinctive-encoding effect. The results revealed that even the youngest children in our sample showed a smaller proportion of intrusions in the picture condition than in the word condition. Furthermore, the results of the signal detection analyses were consistent with the hypothesis that the lower rate of false recognitions after picture encoding results from the implementation of a conservative response criterion based on metacognitive expectations (distinctiveness heuristic). Moreover, the absence of correlation between children’s explicit knowledge of the distinctiveness rule and their effective use of this metacognitive heuristic seems to indicate that its involvement in memory decisions could be mediated by implicit mechanisms. [less ▲]

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See detailFrequency support among asynchronous AC systems through VSCs emulating power plants
Papangelis, Lampros ULg; Guillaud, Xavier; Van Cutsem, Thierry ULg

in Proc. 11th IET Conference on AC and DC Power Transmission (in press)

This paper proposes a new control scheme for the Voltage Source Converters (VSCs) of a High Voltage Direct Current (HVDC) grid connecting asynchronous AC systems, so that the latter can mutually support ... [more ▼]

This paper proposes a new control scheme for the Voltage Source Converters (VSCs) of a High Voltage Direct Current (HVDC) grid connecting asynchronous AC systems, so that the latter can mutually support their frequencies after a disturbance. The scheme involves no communication between VSCs. It is activated upon detection of a significant frequency deviation, with the possibility to limit the support requested from other AC systems. It relies on an integral control enforcing the frequency droop characteristics (of classical speed governors), in addition to the voltage-droop control of VSCs. The controller is tuned to emulate the response of a power plant, while avoiding excessive transients in the HVDC system, and limiting the impact on the other AC systems. [less ▲]

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See detailFin de siècle/Jahrhundertwende: Eine Tendenzgeschichte
Küpper, Achim ULg

in Roland, Hubert (Ed.) Eine kleine deutsch-französische Literaturgeschichte vom 18. Jahrhundert bis zum Ersten Weltkrieg (in press)

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See detailAlbum zutique - Dixains réalistes
Saint-Amand, Denis ULg; Grojnowski, Daniel

Book published by Garnier Flammarion (in press)

Édition de deux recueils collectifs emblématiques de la poésie française du XIXe siècle, comprenant une introduction, des notes explicatives pour chaque texte, un dossier et un dictionnaire des auteurs.

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See detailEffect of bovine colostrum intake on growth, reproductive parameters and survival in red kids
Harouna, Abdou; Marichatou, Hamani; Beckers, Jean-François ULg et al

in Journal of Animal Physiology & Animal Nutrition (in press)

The aim of this study is to evaluate the efficacy of frozen Azawak colostrum supplementation on body weight (BW), average daily gain (ADG), reproductive parameters (mean age at first parturition ... [more ▼]

The aim of this study is to evaluate the efficacy of frozen Azawak colostrum supplementation on body weight (BW), average daily gain (ADG), reproductive parameters (mean age at first parturition, fertility, fecundity, prolificacy) and mortality rate among red kids. The study was conducted at the goat farm secondary centre of Maradi in Niger from September 2010 to September 2011. The control animals (n = 20) were left with their mother, while the treatment animals (n = 20) received in addition 50 ml/animal/day of bovine colostrum at birth and 15 ml/animal/day from d2 to d15. Weight was measured weekly from birth to d365. Mortalities were also recorded over the same period. For reproductive parameters, observations began at weaning (d197). Growth rate was higher (p < 0.001) in supplemented animal, and the treatment effects on ADG were observed up to 150 day after the end of supplementation. A similar long-lasting trend was also observed in relation to the mortality rate (25% for ColG vs. 55% for ConG; p = 0.05). The age at first kidding tended to be lower in the treated group (13.8 0.7 vs. 14.1 0.8 month; p < 0.1). In conclusion, mild bovine colostrum supplementation induces a long-lasting positive impact on growth rate and to a lower extent on reproduction parameters and survival rate. [less ▲]

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See detailRetranslating Cameroon Fulani 'Mbooku' Poems
Oumarou Mal Mazou, Rachid ULg

in Hermeneus : Revista de traducción e interpretación (in press), 17

The article is a retranslation attempt of a Cameroon Fulani 'Mbooku' poem previously transcribed from oral material and translated into English by the Japanese scholar Paul K. Eguchi in 1992. It aims at ... [more ▼]

The article is a retranslation attempt of a Cameroon Fulani 'Mbooku' poem previously transcribed from oral material and translated into English by the Japanese scholar Paul K. Eguchi in 1992. It aims at showing how (re)translation is important for such 'endangered' literature like African oral poems. Moreover, it contributes in introducing primary oral literature to the field of translation studies. [less ▲]

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See detail"Mit blankem Jagdmesser, so heißt es..." Erzählte Morde und Mörder in Theodor Storms Novellen
Leyh, Valérie ULg

in Schriften der Theodor-Storm-Gesellschaft (in press), 64

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See detailThe ideology of the British National Party
Jamin, Jérôme ULg

in Revue LISA : Littératures, Histoire des Idées, Images, Sociétés du Monde Anglophone = LISA e-Journal (in press)

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See detailAn XFEM/CZM implementation for massively parallel simulations of composites fracture
Vigueras, Guillermo; Sket, Federico; Samaniego, Cristobal et al

in Composite Structures (in press)

Because of their widely spread use in many industries, composites are the subject of many research campaigns. More particularly, the development of both accurate and flexible numerical models able to ... [more ▼]

Because of their widely spread use in many industries, composites are the subject of many research campaigns. More particularly, the development of both accurate and flexible numerical models able to capture their intrinsically multiscale modes of failure is still a challenge. The standard finite element method typically requires intensive remeshing to adequately capture the geometry of the cracks and high accuracy is thus often sacrificed in favor of scalability, and vice versa. In an effort to preserve both properties, we present here an extended finite element method (XFEM) for large scale composite fracture simulations. In this formulation, the standard FEM formulation is partially enriched by use of shifted Heaviside functions with special attention paid to the scalability of the scheme. This enrichment technique offers several benefits, since the interpolation property of the standard shape function still holds at the nodes. Those benefits include (i) no extra boundary condition for the enrichment degree of freedom, and (ii) no need for transition/blending regions; both of which contribute to maintain the scalability of the code. Two different cohesive zone models (CZM) are then adopted to capture the physics of the crack propagation mechanisms. At the intralaminar level, an extrinsic CZM embedded in the XFEM formulation is used. At the interlaminar level, an intrinsic CZM is adopted for predicting the failure. The overall framework is implemented in ALYA, a mechanics code specifically developed for large scale, massively parallel simulations of coupled multi-physics problems. The implementation of both intrinsic and extrinsic CZM models within the code is such that it conserves the extremely efficient scalability of ALYA while providing accurate physical simulations of computationally expensive phenomena. The strong scalability provided by the proposed implementation is demonstrated. The model is ultimately validated against a full experimental campaign of loading tests and X-ray tomography analyses for a chosen very large scale. [less ▲]

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