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Articoli di riviste sul tema "Impression 3D et 4D"

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Autore: Grafiati
Pubblicato: 25 maggio 2024

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1

Le Goffic, Caroline. "Impression 3D et responsabilité". Journal du Droit de la Santé et de l’Assurance - Maladie (JDSAM) N° 14, n. 2 (1 marzo 2016): 17–19. http://dx.doi.org/10.3917/jdsam.162.0017.

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2

Claudon, Michel, Nicolas Grenier e Ghislaine Deklunder. "Imagerie ultrasonore 3D et 4D". Journal de Radiologie 86, n. 10 (ottobre 2005): 1231. http://dx.doi.org/10.1016/s0221-0363(05)75111-8.

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3

Diebold, B. "Perspectives en 3D et 4D : principes et applications". Journal de Radiologie 85, n. 9 (settembre 2004): 1237. http://dx.doi.org/10.1016/s0221-0363(04)76767-0.

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4

André, Jean-Claude. "Entre générosité, éthique, coronavirus et impression 3D". Environnement Risques Santé 19, n. 3 (giugno 2020): 168–70. http://dx.doi.org/10.1684/ers.2020.1425.

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5

Vivès-Albertini, Aude. "Impression 3D, santé et droit des brevets". Journal du Droit de la Santé et de l’Assurance - Maladie (JDSAM) N° 14, n. 2 (1 marzo 2016): 24–30. http://dx.doi.org/10.3917/jdsam.162.0024.

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6

Fricain, Jean-Christophe, Hugo De Olivera, Raphaël Devillard, Jérome Kalisky, Murielle Remy, Virginie Kériquel, Damien Le Nihounen et al. "Impression 3D en médecine régénératrice et ingénierie tissulaire". médecine/sciences 33, n. 1 (gennaio 2017): 52–59. http://dx.doi.org/10.1051/medsci/20173301009.

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7

Corréas, J. M. "Aspects technologiques et applications actuelles de l’echographie 3D/4D". Journal de Radiologie 89, n. 10 (ottobre 2008): 1506. http://dx.doi.org/10.1016/s0221-0363(08)76621-6.

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8

Job, L., L. Dejugnat, S. Cardini, G. Mac, A. Long e C. Marcus. "ARM des arteres jambieres : comparaison des sequences 4D et 3D". Journal de Radiologie 89, n. 10 (ottobre 2008): 1366. http://dx.doi.org/10.1016/s0221-0363(08)76121-3.

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9

Arbeille, P. "Echographie et Doppler 3D-4D, sonde matricielle, analyse surfacique et volumetrique des donnees". Journal de Radiologie 86, n. 10 (ottobre 2005): 1231. http://dx.doi.org/10.1016/s0221-0363(05)75112-x.

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10

Rosset, A., L. Spadola, L. Pysher e O. Ratib. "Osirix : visionneuse dicom gratuite et open-source avec fonctions 3D et 4D avancees". Journal de Radiologie 86, n. 10 (ottobre 2005): 1348. http://dx.doi.org/10.1016/s0221-0363(05)75513-x.

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11

Levaillant, J. M. "Intérêt de l’échographie 3D-4D en échographie fœtale et gynécologique : principes et indications". Journal de Radiologie 87, n. 12 (dicembre 2006): 1969–92. http://dx.doi.org/10.1016/s0221-0363(06)74182-8.

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12

Pearson, D. H., C. C. Ahn, B. Fultz e P. Rez. "Hartree-Slater Calculations of the L23 Edges of 3d Transition Metal Electron Energy Loss Spectra". Proceedings, annual meeting, Electron Microscopy Society of America 48, n. 2 (12 agosto 1990): 58–59. http://dx.doi.org/10.1017/s0424820100133886.

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Abstract (sommario):
A straightforward method for measuring the white line intensities of the L23 absorption edges of 3d transition metal electron energy loss spectra was recently reported by Pearson et al. [1]. In that analysis, the white line intensities were isolated by assuming that the continuum contribution for the 3d metals could be approximated by an edge shape similiar to that of copper, which has a full 3d band. When normalized to the continuum, the white line intensities were found to decrease linearly with atomic number (or 3d state occupancy). A similar analysis for the 4d metals showed that the white line intensities initially increased, peaked at Nb, and then decreased nearly linearly with atomic number [2]. The white line calculations of Ahn et al. were in qualitative agreement with these results for the 4d metals, but deviated from experimental results for the early 3d metals [3]. In an effort to determine if the continuum L23 edge is indeed copper-like for the early 3d metals we have calculated the continuum edge shapes based on an atomic, one electron model.
13

Jolly, N., O. Tantot, A. Périgaud, N. Delhote, S. Bila, S. Verdeyme e R.-Ph Gramond. "Conception et expérimentation de dispositifs microondes didactiques par impression 3D plastique". J3eA 16 (2017): 1014. http://dx.doi.org/10.1051/j3ea/20171014.

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14

Catros, Sylvain, Mathilde Fénelon, Hugo De Oliveira, Ghannaa Shayya, Joanna Babilotte, Olivier Chassande e Jean-Christophe Fricain. "Impression 3D et bioimpression pour la régénération osseuse en chirurgie orale". médecine/sciences 40, n. 1 (gennaio 2024): 92–97. http://dx.doi.org/10.1051/medsci/2023202.

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La chirurgie osseuse pré-implantaire en chirurgie orale permet de reconstruire les atrophies des maxillaires en rapport avec des processus traumatiques, infectieux ou tumoraux. Dans ce contexte, le biomatériau idéal reste l’os autogène mais les biomatériaux (d’origine naturelle ou synthétique) permettent de limiter la morbidité liée aux prélèvements osseux et de simplifier ces interventions chirurgicales. Dans cet article, nous illustrons l’apport récent de l’impression 3D dans ce contexte pour traiter des défauts osseux de forme complexe ou pour créer des modèles anatomiques servant à planifier les interventions. Enfin, les perspectives apportées par l’ingénierie tissulaire et la bioimpression (création de modèles in vitro complexes) sont détaillées.
15

Piovesan, Agnese, Tim Van De Looverbosch, Pieter Verboven, Clement Achille, Cesar Parra Cabrera, Elodie Boller, Yin Cheng, Rob Ameloot e Bart Nicolai. "Correction: 4D synchrotron microtomography and pore-network modelling for direct in situ capillary flow visualization in 3D printed microfluidic channels". Lab on a Chip 20, n. 16 (2020): 3060. http://dx.doi.org/10.1039/d0lc90077j.

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Correction for ‘4D synchrotron microtomography and pore-network modelling for direct in situ capillary flow visualization in 3D printed microfluidic channels’ by Agnese Piovesan et al., Lab Chip, 2020, 20, 2403–2411, DOI: 10.1039/D0LC00227E.
16

Annereau, M., B. Toussaint, A. Dufaÿ Wojcicki, S. Dufaÿ, R. Diaz Salmeron e V. Boudy. "Impression 2D-3D dans les pharmacies hospitalières : quels rôles et quels challenges ?" Annales Pharmaceutiques Françaises 79, n. 4 (luglio 2021): 361–74. http://dx.doi.org/10.1016/j.pharma.2021.01.002.

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17

Ahn, C. C., D. H. Pearson, P. Rez e B. Fultz. "EELS white line intensities calculated for the 3d and 4d metals". Proceedings, annual meeting, Electron Microscopy Society of America 47 (6 agosto 1989): 388–89. http://dx.doi.org/10.1017/s0424820100153919.

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Previous experimental measurements of the total white line intensities from L2,3 energy loss spectra of 3d transition metals reported a linear dependence of the white line intensity on 3d occupancy. These results are inconsistent, however, with behavior inferred from relativistic one electron Dirac-Fock calculations, which show an initial increase followed by a decrease of total white line intensity across the 3d series. This inconsistency with experimental data is especially puzzling in light of work by Thole, et al., which successfully calculates x-ray absorption spectra of the lanthanide M4,5 white lines by employing a less rigorous Hartree-Fock calculation with relativistic corrections based on the work of Cowan. When restricted to transitions allowed by dipole selection rules, the calculated spectra of the lanthanide M4,5 white lines show a decreasing intensity as a function of Z that was consistent with the available experimental data.Here we report the results of Dirac-Fock calculations of the L2,3 white lines of the 3d and 4d elements, and compare the results to the experimental work of Pearson et al. In a previous study, similar calculations helped to account for the non-statistical behavior of L3/L2 ratios of the 3d metals. We assumed that all metals had a single 4s electron. Because these calculations provide absolute transition probabilities, to compare the calculated white line intensities to the experimental data, we normalized the calculated intensities to the intensity of the continuum above the L3 edges. The continuum intensity was obtained by Hartree-Slater calculations, and the normalization factor for the white line intensities was the integrated intensity in an energy window of fixed width and position above the L3 edge of each element.
18

Samaan, Mariam, Marc Pierrot-Deseilligny, Raphaële Héno, Cyril Montoya e Sylvain Rassat. "La Photogrammétrie rapprochée pour la modélisation en 4D d'une structure archéologique". Revue Française de Photogrammétrie et de Télédétection, n. 207 (6 luglio 2014): 59–70. http://dx.doi.org/10.52638/rfpt.2014.15.

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Depuis plusieurs années, la photogrammétrie numérique est devenue un outil important dans le domaine de l'archéologie. Les spécialistes de ce domaine reconnaissent que cette technique permet d'enregistrer et de documenter les structures archéologiques ou à plus grande échelle l'intégralité d'un chantier de fouille, de manière rapide, fiable et précise. Pour les sites préhistoriques notamment, il est très important d'enregistrer et de maitriser les différents niveaux de décapage de la fouille. Dans cet article, nous décrivons une méthodologie complète pour effectuer la numérisation photogrammétrique de structures archéologiques par un outil léger et à faible coût.La recherche expérimentale spécifique a eu lieu dans le cadre de la fouille programmée du site du Paléolithique supérieur de plein air "Le Colombier" à Chézy-sur-Marne (Aisne, France) dirigé par un des auteurs (C.M.). L'expérience s'est déroulée sur un foyer aménagé qui a été photographié à neuf étapes différentes du processus de décapage de la fouille. Des orthoimages à chaque étape ont été créées dans le but de produire un modèle 4D (intégrant le temps à la description photogrammétrique). En outre, des images numériques ont été acquises pour créer le modèle 3D complet.Des logiciels open source (Apéro / MicMac) ont été utilisés pour le géoréférencement et la corrélation dense. Ces procédures relativement standards conduisent à des cartes de profondeur, qui peuvent être représentées soit comme nuages de points 3D soit sous forme d'images en relief ombragé.En premier lieu, nous abordons une brève description du site, les outils et méthodes mises en œuvre. Dans un second temps, nous faisons le point sur les résultats obtenus avant de conclure sur les perspectives.
19

Amoretti, N., M. Rouquette, A. Grimaud, M. E. Fonquerne, G. Baudin, S. Novellas, P. Chevallier e J. N. Bruneton. "Echographie 3D et 4D en imagerie de l’appareil locomoteur : uniquement artistique ou reellement pratique". Journal de Radiologie 87, n. 10 (ottobre 2006): 1252. http://dx.doi.org/10.1016/s0221-0363(06)86877-0.

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20

Narumi, Koya, Kazuki Koyama, Kai Suto, Yuta Noma, Hiroki Sato, Tomohiro Tachi, Masaaki Sugimoto, Takeo Igarashi e Yoshihiro Kawahara. "Inkjet 4D Print: Self-folding Tessellated Origami Objects by Inkjet UV Printing". ACM Transactions on Graphics 42, n. 4 (26 luglio 2023): 1–13. http://dx.doi.org/10.1145/3592409.

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We propose Inkjet 4D Print, a self-folding fabrication method of 3D origami tessellations by printing 2D patterns on both sides of a heat-shrinkable base sheet, using a commercialized inkjet ultraviolet (UV) printer. Compared to the previous folding-based 4D printing approach using fused deposition modeling (FDM) 3D printers [An et al. 2018], our method has merits in (1) more than 1200 times higher resolution in terms of the number of self-foldable facets, (2) 2.8 times faster printing speed, and (3) optional full-color decoration. This paper describes the material selection, the folding mechanism, the heating condition, and the printing patterns to self-fold both known and freeform tessellations. We also evaluated the self-folding resolution, the printing and transformation speed, and the shape accuracy of our method. Finally, we demonstrated applications enabled by our self-foldable tessellated objects.
21

Louryan, Stéphane, Marie Lejong e Nathalie Vanmuylder. "Examen tomodensitométrique et impression 3D d’un agneau strophocéphale du musée d’anatomie Louis-Deroubaix (Bruxelles)". Morphologie 103, n. 342 (novembre 2019): 104–5. http://dx.doi.org/10.1016/j.morpho.2019.09.062.

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22

Oca, Valentin, Maxime Debailleul, Charles Hustin, Pauline Duriez, d’Almeida Marc-Antoine e Pascale Laronde. "Conception d’une prothèse de pouce mixte, thermoformée et impression 3D pour les patients amputés". Hand Surgery and Rehabilitation 41, n. 6 (dicembre 2022): 811–12. http://dx.doi.org/10.1016/j.hansur.2022.09.233.

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23

Wang, AiLi, Talia Chung, Hanan Anis e Alireza Jalali. "3D Printing for 21st Century Medical Learners: Opportunities for Innovative Research and Collaboration". University of Ottawa Journal of Medicine 8, n. 1 (23 gennaio 2017): 14–16. http://dx.doi.org/10.18192/uojm.v7i1.1552.

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AbstractWith the commercialization of accessible 3D printers, using 3D printing for creation of personalized medical interventions has become a rapidly expanding area of research. In keeping with these developments, the Faculty of Medicine at the University of Ottawa has purchased 3D printers (Makerbot Replicator 2X and Ultimaker 2 Extended +) and launched a collaboration with Makerspace and the Health Sciences Library to investigate local opportunities to incorporate 3D printing into education, simulations and research. This article aims to summarize some of the recent developments in 3D printing and introduce readers to how one could use 3D printing for personalized medicine. RésuméAvec la venue de la commercialisation d’imprimantes 3D accessibles, l’emploi de l’impression 3D pour la création d’interventions médicales personnalisées est un domaine de recherche en développement rapide. Afin de rester à jour avec ces développements, la Faculté de Médecine de l’Université d’Ottawa s’est procuré des imprimantes 3D (Makerbot Replicator 2X et Ultimaker 2 Extended +) et a entamé une collaboration avec Makerspace et la Bibliothèque des Sciences de la Santé, pour examiner des opportunités locales visant à incorporer l’impression 3D à l’éducation, aux simulations et à la recherche. Cet article vise à résumer certains des développe- ments récents en impression 3D et à présenter aux lecteurs la manière dont celle-ci peut être utilisée pour la médecine personnalisée.
24

Laurent, V., D. Mandry, S. Tissier, L. Meyer-Bisch, C. Barbary, S. Béot e D. Régent. "DIG14 Apport des nouvelles sequences 3D et 4D en IRM dans l’exploration des pathologies viscerales". Journal de Radiologie 86, n. 10 (ottobre 2005): 1481. http://dx.doi.org/10.1016/s0221-0363(05)75970-9.

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25

Laplanche, E., O. Tantot, N. Delhote, A. Périgaud, S. Verdeyme, B. Barelaud e René-Philipe Gramond. "Coupleurs microondes en guide rectangulaire en bande Ku par impression 3D plastique". J3eA 18 (2019): 1015. http://dx.doi.org/10.1051/j3ea/20191015.

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Dans ce papier est présentée la conception de coupleurs directifs microondes basés sur des guides d’ondes volumiques facilement imprimables en plastique par technologie FDM ou Polyjet©. La conception d’un coupleur en guides d’ondes croisés est abordée à la manière d’un projet sub-divisible en plusieurs phases, de la bibliographie à la mesure du dispositif une fois celui-ci imprimé. L’ensemble de ces phases étant relativement interdépendantes, il est possible de se concentrer uniquement sur l’une d’elles dans le cadre d’une séance de travaux pratiques, ou d’en sélectionner plusieurs dans le cadre d’un projet par exemple. Dans une seconde partie, deux topologies de coupleurs hybrides se prêtant également bien à ce type de projets sont présentées, à savoir des coupleurs Short-Slot et Ladder-Type.
26

Ramilison, Eloi, Axel Legouge, Michel Lucciano, Catherine Masson e Arnaud Deveze. "Caractérisation acoustique de conduits auditifs externes normaux : de l’humain aux modèles imprimés 3D". Audiology Direct, n. 4 (2020): 5. http://dx.doi.org/10.1051/audiodir/202004005.

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Objectif : Créer et valider un modèle de CAE normal par impression en 3D bio-fidèles aux CAE humains. Méthodologie : Nous avons prélevé dix CAE humains sur des pièces anatomiques. Après acquisition volumique sur un scanner conventionnel, la conception numérique des CAE en 3D comportait une segmentation et la mise en place d’un support tympanique. Nous avons utilisé du PLA pour l’impression et du ruban adhésif pour simuler une MT artificielle. La vélocimétrie de l’umbo a été mesurée au moyen d’un laser couplé à une chaine acoustique de stimulation-recueil dédiée. Résultats : Comparés aux CAE humains, les modèles ont montré des réponses identiques statistiquement. Un second pic était observé à 5 kHz sur le pattern des CAE imprimés. Les hautes fréquences montraient un profil plus chaotique. Conclusion : Les CAE imprimés en 3D sont des modèles valides et bio-fidèles aux CAE humains. La normalisation des amplifications observées permet d’obtenir un modèle utile pour l’optimisation des dispositifs d’amplification ou de protection auditifs.
27

Skorstad, Arne, Odd Kolbjornsen, Asmund Drottning, Havar Gjoystdal e Olaf K. Huseby. "Combining Saturation Changes and 4D Seismic for Updating Reservoir Characterizations". SPE Reservoir Evaluation & Engineering 9, n. 05 (1 ottobre 2006): 502–12. http://dx.doi.org/10.2118/106366-pa.

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Summary Elastic seismic inversion is a tool frequently used in analysis of seismic data. Elastic inversion relies on a simplified seismic model and generally produces 3D cubes for compressional-wave velocity, shear-wave velocity, and density. By applying rock-physics theory, such volumes may be interpreted in terms of lithology and fluid properties. Understanding the robustness of forward and inverse techniques is important when deciding the amount of information carried by seismic data. This paper suggests a simple method to update a reservoir characterization by comparing 4D-seismic data with flow simulations on an existing characterization conditioned on the base-survey data. The ability to use results from a 4D-seismic survey in reservoir characterization depends on several aspects. To investigate this, a loop that performs independent forward seismic modeling and elastic inversion at two time stages has been established. In the workflow, a synthetic reservoir is generated from which data are extracted. The task is to reconstruct the reservoir on the basis of these data. By working on a realistic synthetic reservoir, full knowledge of the reservoir characteristics is achieved. This makes the evaluation of the questions regarding the fundamental dependency between the seismic and petrophysical domains stronger. The synthetic reservoir is an ideal case, where properties are known to an accuracy never achieved in an applied situation. It can therefore be used to investigate the theoretical limitations of the information content in the seismic data. The deviations in water and oil production between the reference and predicted reservoir were significantly decreased by use of 4D-seismic data in addition to the 3D inverted elastic parameters. Introduction It is well known that the information in seismic data is limited by the bandwidth of the seismic signal. 4D seismics give information on the changes between base and monitor surveys and are consequently an important source of information regarding the principal flow in a reservoir. Because of its limited resolution, the presence of a thin thief zone can be observed only as a consequence of flow, and the exact location will not be found directly. This paper addresses the question of how much information there is in the seismic data, and how this information can be used to update the model for petrophysical reservoir parameters. Several methods for incorporating 4D-seismic data in the reservoir-characterization workflow for improving history matching have been proposed earlier. The 4D-seismic data and the corresponding production data are not on the same scale, but they need to be combined. Huang et al. (1997) proposed a simulated annealing method for conditioning these data, while Lumley and Behrens (1997) describe a workflow loop in which the 4D-seismic data are compared with those computed from the reservoir model. Gosselin et al. (2003) give a short overview of the use of 4D-seismic data in reservoir characterization and propose using gradient-based methods for history matching the reservoir model on seismic and production data. Vasco et al. (2004) show that 4D data contain information of large-scale reservoir-permeability variations, and they illustrate this in a Gulf of Mexico example.
28

Nouri, Malek. "L’impression 3D en design: pour une future expérience créative en Tunisie". Revista de Ensino em Artes, Moda e Design 7, n. 3 (18 settembre 2023): 1–19. http://dx.doi.org/10.5965/25944630732023e3369.

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L'architecture est profondément influencée par les nouvelles technologies, constamment mise à l'épreuve des innovations et des tendances en quête d'ancrage et de performance environnementale. Ces avancées technologiques fulgurantes ouvrent la voie à de nouvelles formes de créativité en design d'intérieur. L'impression 3D également connue sous le nom de fabrication additive ouvre la voie à une conception spatiale plus intelligente et plus efficace. La technologie d'impression 3D a déjà connu un succès dans le monde, le manque de connaissance et de sensibilisation à la technologie dans le secteur de la construction, les méthodes de caractérisation des matériaux et les questions de fabrication posent un réel problème aux architectes et aux designers d'intérieur en Tunisie. Les interrogations qui s’imposent concernent la possibilité d’utiliser la technologie dans la conception des espaces intérieurs, la place qu’occupe aujourd’hui l’innovation dans la création de nos espaces et comment penser l’intersection entre design et impression 3D dans la conception de nos espaces de vie? L'objectif de ce travail est d'identifier les enjeux de la conception architecturale créative et durable en Tunisie à travers l'impression 3D en recourant à une approche empirique fondée sur l'étude de cas et l'analyse de projets concrets. L'éducation en matière d'impression 3D nous permettra de réexaminer cette technologie innovante, qui pourrait apporter des solutions aux défis environnementaux et sociaux liés à la construction. Ce changement de paradigme va révolutionner notre façon de concevoir l'espace physique, l'architecture et le bâtiment dans un pays où l'architecture a été influencée par plusieurs civilisations.
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De groupe, Exposition. "Le graffiti danse comme… / The graffiti dances like…". ti< 7, n. 1 (31 marzo 2018): 8–11. http://dx.doi.org/10.26522/ti.v7i1.1731.

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Le graffiti danse comme… / The graffiti dances like… (2018)Lithophanies (photographies digitales et impression 3D) sur le thème du mouvement + Ecriture poétique à partir du graffiti de Mat Vizbulis. Les verbes de mouvement entre guillemets dans le texte en français sont empruntés à L’esprit du temps / The Spirit of the Time (2015) de l’artiste/auteur Daniel DugasLithophanies (digital photographs and 3D printing) on the theme of movement + Creative writing based on graffiti artwork by Mat Vizbulis. Verbs of movement placed between brackets in the French text are excerpted from L’esprit du temps / The Spirit of the Time (2015) by artist/author Daniel Dugas
30

Bonnel, F. "Apport de l’impression 3D (méthode additive) dans la planification et la correction des troubles statiques complexes du pied et de la cheville : méthodologie et applications chirurgicales". Médecine et Chirurgie du Pied 36, n. 1 (marzo 2020): 21–30. http://dx.doi.org/10.3166/mcp-2020-0041.

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La correction chirurgicale d’un trouble statique de l’avant-pied ou de l’arrière-pied est fondée sur une évaluation clinique complétée par des radiographies conventionnelles et une tomodensitométrie avec reconstruction. En peropératoire, les traits d’ostéotomies et les corrections angulaires manquent de précision. La tomodensitométrie préopératoire est actuellement de pratique courante. Nos objectifs étaient de visualiser, après impression du modèle en trois dimensions (3D), les déformations et de les corriger avec précision dans les trois plans de l’espace. La méthodologie utilisée est comparable à celle de l’orthodontie avec grande précision. Dans notre expérience, nous avons obtenu une reproduction identique à la déformation clinique avec possibilité de procéder à la correction 3D de la déformation à la même échelle que l’original. L’utilisation de fantômes en cas d’ostéosynthèse autorise un prémoulage. Cette étape expérimentale est une approche technique objective peu coûteuse du geste à réaliser. Dans un deuxième temps, il apparaît possible de réaliser un cadre externe stérile pour guider avec une approche mini-invasive le trait d’ostéotomie dans les trois plans de l’espace. Cette approche méthodologique fondée sur un traitement d’image après tomodensitométrie a montré sa faisabilité et est une approche innovante pour la conceptualisation de la prise en charge chirurgicale des cals vicieux et des déformations complexes du pied.
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Miskovic, Berivoj, Badreldeen Ahmed, Moayyad Younis, Salwa Abo-Yaquab, Huda Saleh, Afaf Naim Shaddad, Awatif Juma Al Bahar e Najat Khenyab. "An Attempt to Introduce Neurological Test for Fetus Based on 3D and 4D Sonography". Donald School Journal of Ultrasound in Obstetrics and Gynecology 2, n. 4 (2008): 29–44. http://dx.doi.org/10.5005/jp-journals-10009-1076.

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Abstract Fetal neurology is a new challenging field. Brain damage often originates in fetal life. Early identification of this damage has implications for perinatal management; moreover documentation of such lesions is essential in case of litigation. In the last two decades, fetal imaging with 2-dimensional ultrasounds and conventional magnetic resonance imaging have made a major contribution in the identification of classic brain lesions and malformations. However, it is only recently with diffusion weight imaging that the whole spectrum of perinatal white matter injuries has been described in the neonate. The recent advances of 3DUS and 4DUS in exploring fetal motor behavior should support a better clinical description of the full spectrum of fetal damage. New neurological test (KANET) of the fetus recently suggested by us (Kurjak et al 2008) might be helpful in the assessment of fetal neurobehavior.
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Pierreville, J., C. Serrano, H. van den Brink, P. Prognon, J. Pineau e N. Martelli. "Dispositifs médicaux et modèles anatomiques produits par impression 3D : quelle diffusion et quelles utilisations dans les établissements de santé français ?" Annales Pharmaceutiques Françaises 76, n. 2 (marzo 2018): 139–46. http://dx.doi.org/10.1016/j.pharma.2017.12.001.

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Bosserelle, B., T. Gauliard e J. Delode. "Impression 3D : mise en place d’une plateforme collaborative de modèles 3D de pièces détachées et accessoires non critiques de dispositifs biomédicaux (AFIB3D)". IRBM News 42, n. 6 (dicembre 2021): 100356. http://dx.doi.org/10.1016/j.irbmnw.2021.100356.

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Favier, Valentin, Michel Mondain, Guillaume Captier, Louis Crampette, Nabil Zemiti, Oscar Caravaca e Benjamin Gilles. "Base du crâne osseuse en impression 3D : méthodes de validation géométrique et mécanique pour le choix du matériau, perspectives et applications". Morphologie 101, n. 335 (dicembre 2017): 196–97. http://dx.doi.org/10.1016/j.morpho.2017.07.091.

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Lübke, Erik, Lukas Helfen, Roland Brunner, Thomas Vorauer, Jakub Drnec, Stefan Koller e Sandrine Lyonnard. "Investigation of Silicon-Based Anodes for Li-Ion Batteries Using X-Rays and Neutron 3D/4D Imaging Techniques". ECS Meeting Abstracts MA2022-01, n. 2 (7 luglio 2022): 424. http://dx.doi.org/10.1149/ma2022-012424mtgabs.

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Silicon-based anode materials are one of the most promising approaches to further increase the energy density of lithium-ion batteries. However, current materials are limited by poor cycling stability and rapid capacity fading, mainly caused by the massive volume expansion of Si during lithiation and subsequent strain on the material composite. [1] Furthermore, this electrode swelling also results in continuous solid electrolyte interface (SEI) growth, which hinders the migration of Lithium and leads to permanent capacity loss. [2] [3] To optimize these materials, analytical techniques able to probe the local 3D morphology and Li content are necessary. By applying methods such as neutron computed tomography (NCT), X-Ray computed tomography (XCT) and synchrotron scattering micro-tomography (SMT) structural ageing and changes in the distribution of lithium in the various components can be characterized and quantified for different charging states and recharge cycle numbers. This study investigates an anode material based on a dual phase alloy system of amorphous Silicon (a-Si) with crystalline iron silicide (c-FeSi2) and graphite. [4] [5] Li-ion battery coin cells containing this silicon-graphite composite anode material were industrially produced and aged by performing 1, 300, and 700 charge-discharge cycles, corresponding to remaining capacities of 100, 70 and 50 %, respectively. NCT and XCT scans were acquired at the NeXT instrument of the ILL in Grenoble (France) [6], and SMT measurements performed at ID31 of the neighboring ESRF. These datasets were reconstructed and evaluated using specially developed data processing pipelines. By performing multi-modal registration, the NCT and XCT scans were aligned and segmented to combine the complementary datasets and create a 4D model of the Li-ion battery coin cells. Figure 1 shows a sample of the combined NCT (cyan) and XCT datasets (red). Cropped horizontal slices of Li-Ion battery coin cells are depicted side by side with the main components labelled. Comparing one of the highly cycled cells with 50% remaining capacity (top) with the reference cell without electrolyte (bottom), trapped Lithium can be observed in the anode layers, visible as cyan colored blotchy areas in the otherwise dark component. The pixel size is approximately 5 µm. The change of lithium distribution in the components between different cycle numbers and charge states in the attenuation-based tomography techniques of NCT / XCT is quantified by modelling expected attenuation parameters to the observed values. The diffraction-based tomography method of SMT was modeled using expected lattice parameters. From this information, trapped Lithium can be identified and changes in the distribution are analyzed to point out possible degradation and failure mechanisms. We acknowledge financial support from the European Union’s Horizon 2020 research and Innovation program No. 875514 (ECO2LIB) as well as No. 847439 (InnovaXN) under the Marie Skłodowska-Curie grant agreement. [1] S. Tardif et al, https://doi.org/10.1021/acsnano.7b05796 [2] T. Vorauer et al, https://doi.org/10.1038/s42004-020-00386-x [3] P. Kumar et al, https://doi.org/10.1002/smll.201906812 [4] C. Berhaut et al, https://doi.org/10.1021/acsnano.9b05055 [5] C. Berhaut et al, https://doi.org/10.1016/j.ensm.2020.04.008 [6] A. Tengattini et al, https://doi.org/10.1016/j.nima.2020.163939 Figure 1
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Tanguay, Monique, Luc Fillion, Ervig Lapalme e Manon Lajoie. "Four-Dimensional Variational Data Assimilation for the Canadian Regional Deterministic Prediction System". Monthly Weather Review 140, n. 5 (1 maggio 2012): 1517–38. http://dx.doi.org/10.1175/mwr-d-11-00160.1.

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Abstract As a second step in the development of the Canadian Regional Data Assimilation System following Fillion et al., this study extends the approach to the four-dimensional variational data assimilation (4D-Var) context. Emphasis is first put on illustrating the importance of controlling lateral boundary conditions (LBCs). The use in the minimization of a horizontal grid over a domain exceeding the horizontal grid of the high-resolution nonlinear model is then proposed. The authors examine the performance of this 4D-Var formulation as an upcoming upgrade to the currently operational regional three-dimensional variational data assimilation (3D-Var) system. Forecast verifications against radiosonde data for 118 winter cases and 118 summer cases were performed. Results indicate a slight positive impact up to 48 h against North American radiosondes, but with a significant positive impact (especially for winds) at mid- and high latitudes during the summer. Accumulated precipitation scores over 24 h, whether during the first or second day of the forecasts, are slightly improved. The regional 4D-Var analysis system described in this study can run within current real-time “regional run” allocation for operations at the Canadian Meteorological Center (CMC). Future improvements of this system are briefly mentioned especially regarding the upcoming computer upgrade at CMC.
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Bonnel, F. "Méthodes de préservation et transmission par structure sensor et impression 3D du patrimoine historique du 19e siècle du conservatoire d’anatomie à Montpellier". Morphologie 102, n. 338 (settembre 2018): 187–88. http://dx.doi.org/10.1016/j.morpho.2018.07.032.

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Bartellas, Michael Peppis. "Three-Dimensional Printing and Medical Education: A Narrative Review of the Literature". University of Ottawa Journal of Medicine 6, n. 1 (11 maggio 2016): 38–43. http://dx.doi.org/10.18192/uojm.v6i1.1515.

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Objectives: Three-dimensional (3D) printing has emerged in the past decade as a promising tool for the world of medicine. The focus of this article is to review how 3D printed models have been used in medical education.Methods: PubMed was the article database used, and the search criteria included the terms 3D printing and education. The exclusion criteria filtered out articles that were older than ten years, were not in English, and did not target a human population. There were 90 discovered articles, and 38 appropriate articles were determined after reviewing titles and abstracts.Results: Three main themes emerged from this review: general medical education, surgical education, and patient education. The more specific findings can be further divided into: using 3D printed models for teaching anatomy and simulation training; and preop­erative planning, intraoperative guidance, and postoperative evaluation.Conclusions: The general consensus was that 3D haptic modelling was a useful tool for educating trainees, staff physicians, and pa­tients. The models helped in increasing participants’ understanding of anatomy and pathologies, and improving trainee skill set and confidence. There is much support to continue research in this area and to further develop ways in which 3D printing can help improve medical education. Objectifs : L’impression tridimensionnelle (3D) s’annonce comme un outil prometteur pour le monde de la médecine. Le présent ar­ticle révisera comment les méthodes d’impression 3D ont été utilisées dans l’éducation médicale.Méthodes : La base de données utilisée pour les articles fut PubMed et les critères de recherche ont inclus les termes impression 3D et éducation. Les critères d’exclusion ont omis des articles qui dataient de plus de dix ans, qui n’étaient pas en anglais, et qui n’avaient pas comme cible la population humaine. Il y a 90 articles qui furent trouvés en tout et 38 de ces articles ont été jugés adéquats pour la révision.Résultats : Trois grands thèmes ont été ressortis lors de cette révision : éducation médicale générale, éducation chirurgicale, et éduca­tion des patients. De façon plus précise, les thèmes spécifiques suivants furent dégagés : l’utilisation d’impression de modèles 3D pour l’enseignement de l’anatomie et la formation par simulation, la préparation préopératoire, le guide intraopératoire, et l’évaluation postopératoire.Conclusion : Les modèles haptiques 3D étaient reconnus comme un outil efficace pour éduquer les stagiaires, les médecins, et les patients. Ces modèles ont aidé à augmenter la compréhension de l’anatomie et de la pathologie des participants et ont augmenté la confiance et les habiletés des stagiaires. Ces preuves démontrent l’importance de continuer la recherche dans ce domaine afin de développer davantage de façons d’optimiser l’éducation médicale à l’aide de l’impression tridimensionnelle.
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Maurice, E. "Mon expérience de planification et impression 3D en pratique quotidienne dans un centre de chirurgie de la main". Hand Surgery and Rehabilitation 37, n. 6 (dicembre 2018): 423. http://dx.doi.org/10.1016/j.hansur.2018.10.124.

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Tournadre, Vincent, Jacques Beilin, Marc Pierrot-Deseilligny e Paul-Henri Faure. "Conception de modèles 3D précis pour un suivi 4D optimisé des ouvrages hydrauliques linéaires : intérêt et particularité du drone". La Houille Blanche, n. 3 (giugno 2016): 33–38. http://dx.doi.org/10.1051/lhb/2016028.

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Hernández-Alfaro, Federico. "Syndrome d’hyperdivergence faciale". L'Orthodontie Française 87, n. 4 (dicembre 2016): 479–89. http://dx.doi.org/10.1051/orthodfr/2016037.

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Introduction : Depuis que les analyses céphalométriques existent, un nombre significatif de méthodes d’évaluation de la dimension verticale squelettique a été proposé. De notre point de vue, le diagnostic d’une dysmorphie de la dimension verticale n’a rien à voir avec les chiffres et les mesures. Tout est affaire de perception et plutôt d’impressions subjectives. Cette impression de face longue survient quand un facteur isolé ou plusieurs causes sont réunies : excès vertical maxillaire, infraclusie, excès vertical antérieur mandibulaire, face étroite, manque de définition menton-cou Méthode : La planification du traitement est suivie d’une simulation 3D et de la conception-fabrication par ordinateur (CAD-CAM) de gouttières chirurgicales. Conclusion : La prise en charge chirurgicale des cas présentant une hyperdivergence faciale met en jeu différentes stratégies thérapeutiques qui peuvent être utilisées isolément ou combinées : impaction maxillaire, réduction verticale du menton, rotation antihoraire du plan occlusal.
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Iqbal, Z., E. Leone, R. Chin, A. J. Signorelli, A. Bose e H. Eckhardt. "X-ray photoemission spectroscopy of the 90 K superconductor Ba2YCu3O7−δ". Journal of Materials Research 2, n. 6 (dicembre 1987): 768–74. http://dx.doi.org/10.1557/jmr.1987.0768.

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The x-ray photoemission spectroscopie (XPS) data from different pelletized samples of the 90 K superconductor Ba2YCu3O7−δ (where δ∼0.2) have been obtained. The valence band spectrum (recorded at 300 and 170 K), which is composed of contributions from both the Cu 3d and O 2p levels, is compared with the full potential linearized augmented plane wave (FLAPW) calculated electronic density-of-states (DOS) reported by Massidda et al. and Mattheiss and Hamann. The experimental data indicate a relatively low DOS at the Fermi level. Detailed measurements of the core level Cu 2p, O 1s, Ba 3d, 4d, and Y 3d spectra of the superconducting and related standard materials, are presented. Data for the superconducting material were recorded in the freshly prepared form as well as after scraping in situ. The Cu 2p core level, satellite, and Auger spectra for the various samples were carefully examined in order to assess the possibility of the presence of Cu3+ ions in Ba2YCu3O7-δ. It is observed that surface reaction in air to form carbonates and hydroxides occurs readily in the superconducting material.
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Carpenter, Chris. "4D Seismic Used Effectively in Subsurface CO2 Plume Monitoring". Journal of Petroleum Technology 75, n. 02 (1 febbraio 2023): 95–97. http://dx.doi.org/10.2118/0223-0095-jpt.

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_ This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 206162, “4D Seismic in Subsurface CO2 Plume Monitoring: Why It Matters,” by Pankaj K. Tiwari, SPE, Debasis P. Das, and Parimal A. Patil, SPE, Petronas, et al. The paper has not been peer reviewed. _ Carbon dioxide (CO2) sequestration in depleted carbonate reservoirs requires the incorporation of comprehensive and innovative monitoring technologies. 4D time-lapse seismic is necessary for monitoring, measurement, and verification (MMV) planning to demonstrate the migration of CO2 plumes within geological storage. An adaptive, site-specific MMV plan for monitoring CO2 plumes is critical to minimize possible subsurface and project-integrity risks. In the complete paper, the authors explore the migration of CO2 plumes within depleted carbonate reservoirs and the expected effects of CO2 saturation and pressure buildups during injection on time-lapse 4D seismic for conformance monitoring. Integrated Reservoir Dynamic Simulation In the current study, a depleted carbonate reservoir gas field was identified for near-future CO2 sequestration offshore Sarawak. The storage site has been studied thoroughly for both overburden and reservoir integrity by adopting work flows comprising integration of subsurface integrity analysis, pore-pressure analysis, and subsidence modeling, along with a health check of existing wells. All parameters were cross-correlated. Qualitative risk categorization was performed to determine the robustness of the reservoir for long-term CO2 storage. Integrated reservoir dynamic simulation was performed by coupling compositional reservoir dynamic/geomechanics/geochemistry 3D models to assess the integrity of the field as a CO2 storage site and to demonstrate the periodic development of CO2 saturation and plumes within the gas-depleted carbonate reservoir. Computation of the cumulative effect of changes occurring in all three models was essential. Changes to reservoir rock properties caused by dissolution and precipitation, as well as compaction during injection, were interpreted by 3D coupled modeling simulation and integrated with seismic modeling. Apart from storage capacity, results from the coupled modeling study showed that reservoir pressure at the end of the injection period was approximately 400 psia lower than the initial reservoir pressure. Modeling also showed that the entire incoming permeate stream rate could be injected with three injection wells. Fig. 1 shows the CO2 plume migration after 2, 10, and 20 years of injection from all three injectors. Because injection is planned from a predrill liner in the full reservoir column, the CO2 plume migrates upward in a funnel shape around the well first. In the initial years of injection, most of the CO2 migrates laterally in the shallower formation of the reservoir, then migrates downward once the shallower formation of the reservoir section is fully CO2-saturated.
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Ramani, Dilip, Yadvinder Singh, Robin T. White, Tylynn Haddow, Francesco P. Orfino, Monica Dutta e Erik Kjeang. "4D Structural Characterization of Mechanical Degradation in Reinforced Fuel Cell Membranes Using in Situ Visualization". ECS Meeting Abstracts MA2018-01, n. 32 (13 aprile 2018): 1962. http://dx.doi.org/10.1149/ma2018-01/32/1962.

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Perfluorosulfonic acid (PFSA) ionomer membranes in fuel cells are susceptible to operational mechanical stresses resulting in fatigue and/or creep failures that compromises their durability and lifetime. The fatigue based mechanical degradation is typically a result of repeated wet/dry humidity cycles that cause micro crack initiation and /propagation within the membrane [1]. Fatigue induced membrane failure in the form of cracks/tears/pinholes leads to a gradual increase in gas crossover and ultimately to fuel cell failure. Membranes with less conductive mechanical reinforcements have been developed to alleviate mechanical degradation yielding demonstrated improvements in lifetime and durability. Nevertheless, development of membrane damage remains a critical failure mode and the fundamental understanding of membrane mechanical degradation is a subject of ongoing research. Scanning electron microscopy (SEM) based studies have been used to characterize the degradation-induced structural changes in fuel cell membranes; however, SEM imaging is inherently destructive and inhibits any tracking of structural changes at a particular location over time. Hence, membrane degradation evolution studies are limited to ex situ analysis at various stages of degradation and with different samples. Recently, laboratory-based X-ray computed tomography (XCT) was introduced as an alternative imaging technique, which has enabled three-dimensional (3D) failure analysis of fuel cell membranes revealing novel insights on membrane failure [2,3]. In the present work, the XCT-based 3D failure analysis approach is extended to an in situ investigation of pure mechanical membrane degradation by utilizing a custom designed fixture. This X-ray transparent fixture houses a gas diffusion electrode (GDE) based MEA with a reinforced membrane, which is subjected to wet/dry cycling of N2 gas flowing through both anode and cathode sides, thereby producing a pure mechanical fatigue type degradation within the membrane. XCT-based 3D identical location tracking of membrane morphology as a function of degradation time facilitates a novel four-dimensional (4D) in situ workflow [4], which enables the characterization of the damage growth or evolution. Preliminary results show that no through- thickness membrane cracks developed until 3000 wet/dry cycles. However, minor crazes initiated on the cathode side membrane surface (Fig. 1) between 2000 and 2500 cycles. Crack initiation and growth within the reinforced membrane are comprehensively examined from various perspectives by simultaneously studying the two-dimensional (2D) planar and cross-sectional views. A clear interaction of membrane cracks with defect features, such as delamination and catalyst layer cracks is observed. Furthermore, the centrally located reinforcement layer is found to restrict the through-thickness growth of membrane cracks at several locations in the early stages of damage initiation. Overall, the size and density of membrane crack formation at a given number of cycles is found to be considerably reduced with the use of a reinforced membrane when compared to a non-reinforced membrane. A detailed study to understand the variation in degradation mechanisms between reinforced and non-reinforced membranes is carried out. Overall, the work summarized here is a unique study on the evolution of reinforced membrane degradation with a 4D perspective. The new findings from this work demonstrate the distinct advantage of XCT technology in gaining an improved fundamental understanding of membrane degradation by capturing critical failure modes and mechanisms at their different developmental stages. Acknowledgement This research was funded by the Natural Sciences and Engineering Research Council of Canada, Canada Foundation for Innovation, British Columbia Knowledge Development Fund, and Ballard Power Systems through an Automotive Partnership Canada (APC) grant. This research was undertaken, in part, thanks to funding from the Canada Research Chairs program. The authors thank Kevin Dahl and Alex Boswell for technical support. References [1] R.M.H. Khorasany, et al. J. Power Sources 274 (2015) 1208-1216 [2] Y. Singh et al. J. Power Sources 345 (2017) 1–11 [3] Y. Singh et al. J. Electrochem. Soc. 164 (2017) F1331-41 [4] R.T. White et al. J. Power Sources 350 (2017) 94-102 Figure 1
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Chen, Kaifang, Fan Yang, Sheng Yao, Zekang Xiong, Tingfang Sun, Fengzhao Zhu, Dionne Telemacque, Deepak Drepaul, Zhengwei Ren e Xiaodong Guo. "Chirurgie virtuelle assistée par ordinateur et impression 3D de plaques individualisées pré-chantournées dans les fractures acétabulaires des deux colonnes". Revue de Chirurgie Orthopédique et Traumatologique 105, n. 5 (settembre 2019): 582. http://dx.doi.org/10.1016/j.rcot.2019.06.011.

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Hosseini, Amir, Masoud Iranmanesh, Ebrahim Jahanshahi Javaran e Abed Zadehgol. "Application of lattice kinetic models with Tsallis entropy in simulating fluid flow through porous media". International Journal of Modern Physics C 28, n. 09 (settembre 2017): 1750110. http://dx.doi.org/10.1142/s0129183117501108.

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In this work, application of the recently introduced constant speed kinetic model (CSKM) [A. Zadehgol and M. Ashrafizaadeh, J. Comp. Phys. 274 803, (2014); A. Zadehgol, Phys. Rev. E 91, 063311 (2015)] in simulating fluid flow through porous media is explored. Discrete forms of Tsallis and Burg entropy functions were first introduced by Boghosian et al. [Phys. Rev. E [Formula: see text], 025103, (2003)], in the context of lattice Boltzmann model (LBM). In the CSKM, the virtual particles are concentrated on n-dimensional (nD-) spheres centered at the computational nodes. Using continuous forms of the unconventional entropies of Burg, [Formula: see text] (for 2D), and Tsallis, [Formula: see text] (for nD with [Formula: see text]), the CSKM extends the work of Boghosian et al., in the limit of fixed speed continuous velocities. In this work, the second-order accuracy, efficiency, and thermodynamic consistency of the 2D- and 3D-projections of the 4D-CSKM are explored and numerically verified.
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Coburn, Jeremy R., e Sherman D. Charles. "Hadza liquid production and acoustics". Journal of the Acoustical Society of America 153, n. 3_supplement (1 marzo 2023): A370. http://dx.doi.org/10.1121/10.0019202.

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Liquid systems in the world’s languages are relatively poorly understood. This study employs 3D/4D ultrasound methods to investigate articulatory characteristics of Hadza liquids produced by a single male speaker in a laboratory, analyzing simultaneously collected acoustic signals to determine relations between articulation and acoustics. Articulatory-acoustic relations are then compared to acoustic data obtained from other speakers collected in the field. Hadza is a language isolate spoken by approximately 1200 people (Brian Wood, pc.) in north-central Tanzania. Hadza is reported to have a single liquid phoneme which varies allophonically between a lateral approximant [l] occurring word-initially, and a tap [ɾ], occurring intervocalically (Tucker et al., 1977; Sands et al., 1996; Sands, 2013). The results of the current study confirm the production of both lateral approximant [l] and tap [ɾ] allophones; however, the results also show substantial variation between speakers. Furthermore, some speakers exhibit a categorical distinction between the allophones in given phonological environments, while others indicate a very similar articulation in both, and demonstrate no such distinction.
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Saniyyah, Uswatul Wadhichatis, Nur Hayati e Saifullah Hidayat. "Developing bacterial set box media containing fiqh al biah for Islamic senior high school". JPBI (Jurnal Pendidikan Biologi Indonesia) 7, n. 1 (31 marzo 2021): 83–94. http://dx.doi.org/10.22219/jpbi.v7i1.12944.

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The limitations of bacterial visualization media make bacteria consider as abstract and difficult material to study. Furthermore, the implementation of bacteria material and the integration of Islamic values are difficult to teach. This research aimed at developing and validating the BSB (Bacterial Set Box) media containing fiqh al biah. The method used in this research was R&D (Research and Development) with 4D model (Define, Design, Develop, and Disseminate) by Thiagarajan et al. The media developed was three dimensions (3D), which was packed up in a box which contained three packages. The first box was bacterial visualization; the second box was bacterial classification; the third box was 3D box containing fiqh al biah. The field test was carried out in Al Azhar Islamic Public School 16 and MA Nurussalam Semarang. The results showed that the validation percentages were 94% (material expert), 79% (media expert), 96% (integration expert), 92% (biology teacher of Al Azhar Islamic Public School 16), and 86% (biology teacher of MA Nurussalam). A pilot scale test and a large-scale test showed very feasible. It can be concluded that BSB media containing fiqh al biah is very feasible to use.
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Ochai-Audu, Eudorah. "Technology Focus: Seismic (February 2022)". Journal of Petroleum Technology 74, n. 02 (1 febbraio 2022): 84–85. http://dx.doi.org/10.2118/0222-0084-jpt.

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Abstract (sommario):
The past couple of years has been a rollercoaster for energy professionals, but it did not stop the incredible achievements in machine-learning techniques, particularly neural networks to improve seismic imaging and multiple attribute extraction to decipher reservoir rock properties and fluid contact movements in areas with data paucity and increasing difficulty in finding new or remaining hydrocarbon accumulations. As I reviewed the seismic-related papers, I was impressed at the innovative ML methods that were developed and successfully deployed to improve already existing data and augment sometimes scarce data to aid understanding of risks and uncertainties, enhance hydrocarbon recovery, reduce cost, increase production, and, in some cases, redefine the geological understanding of the play. Apart from the fields of seismic imaging, reservoir characterization, and hydrocarbon recovery, there were many papers devoted to new tectonic models, improved geohazards assessment, microporosity estimates, and data-acquisition methods—vertical seismic profiles, shear wave, 3D/4D ocean bottom cable, electromagnetic survey, and high-resolution broadband seismic. It was difficult to select the top three papers for synopsis because there were so many interesting topics to choose from, but I ensured that readers receive a taste of the major topics covered, selecting some that are must-reads and recommending a few others for your reading pleasure. I hope you find them as enjoyable as I did. Recommended additional reading at OnePetro: www.onepetro.org. IPTC 19810 - Hydrocarbon Exploration and Production Potential of the Gulf of Suez Basin in the Framework of the New Tectonostratigraphic Model by Janpieter Van Dijk, Dragon Oil, et al. OTC 30620 - Improving Drilling Geohazards Assessments of the Overburden Section by Performing Seismic Multiattribute Analysis by Yosmel Sanchez, Fugro, et al. SPE 200761 - Accounting for Model Errors of Rock Physics Models in 4D Seismic History-Matching Problems: A Perspective of Machine Learning by Xiaodong Luo, NORCE, et al. SPE 202651 - The Houta Prospect Hammamet Basin, Offshore Tunisia, as an Example of a New Play in an Old Basin by Janpieter van Dijk, GGS, et al. SPE 202753 - A Machine-Learning Approach to Removing Highly Variable Surface Waves for a Large Shallow-Water Survey Offshore Abu Dhabi by Al Hajeri Badreia, ADNOC, et al.
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Halder Jana, Sharmistha, Biswapati Jana, Barun Das, Goutam Panigrahi e Manoranjan Maiti. "Constrained FC 4D MITPs for Damageable Substitutable and Complementary Items in Rough Environments". Mathematics 7, n. 3 (19 marzo 2019): 281. http://dx.doi.org/10.3390/math7030281.

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Abstract (sommario):
Very often items that are substitutable and complementary to each other are sent from suppliers to retailers for business. In this paper, for these types of items, fixed charge (FC) four-dimensional (4D) multi-item transportation problems (MITPs) are formulated with both space and budget constraints under crisp and rough environments. These items are damageable/breakable. The rates of damageability of the items depend on the quantity transported and the distance of travel i.e., path. A fixed charge is applied to each of the routes (independent of items). There are some depots/warehouses (origins) from which the items are transported to the sales counters (destinations) through different conveyances and routes. In proposed FC 4D-MITP models, per unit selling prices, per unit purchasing prices, per unit transportation expenditures, fixed charges, availabilities at the sources, demands at the destinations, conveyance capacities, total available space and budget are expressed by rough intervals, where the transported items are substitutable and complementary in nature. In this business, the demands for the items at the destinations are directly related to their substitutability and complementary natures and prices. The suggested rough model is converted into a deterministic one using lower and upper approximation intervals following Hamzehee et al. as well as Expected Value Techniques. The converted model is optimized through the Generalized Reduced Gradient (GRG) techniques using LINGO 14 software . Finally, numerical examples are presented to illustrate the preciseness of the proposed model. As particular cases, different models such as 2D, 3D FCMITPs for two substitute items, one item with its complement and two non substitute non complementary items are derived and results are presented.
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