Relevant bibliographies by topics / Taille des pores

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Taille des pores'

Author: Grafiati
Published: 8 June 2024
Last updated: 31 July 2025

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Journal articles on the topic "Taille des pores"

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SULLIVAN, JOHN P., and CARL D. HOPKINS. "A new Stomatorhinus (Osteoglossomorpha: Mormyridae) from the Ivindo River, Gabon, West Central Africa." Zootaxa 847, no. 1 (2005): 1. http://dx.doi.org/10.11646/zootaxa.847.1.1.

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Stomatorhinus ivindoensis n. sp. is described from the basin of the Ivindo River, a tributary of the Ogooué River, in Gabon, West Central Africa. This species is characterized by its very small size which is not known to exceed 56 mm standard length. It is distinguished from S. fuliginosus from the Congo basin, the only described Stomatorhinus for which all members of the type series are within the size range of S. ivindoensis, by a smaller caudal peduncle depth to length ratio, a narrower head, a greater number of lateral line scales with visible tubes and pores and by rounded caudal fin lobe
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Hattab, Mahdia, Soumia Bouziri-Adrouche, and Jean-Marie Fleureau. "Évolution de la microtexture d’une matrice kaolinitique sur chemin triaxial axisymétrique." Canadian Geotechnical Journal 47, no. 1 (2010): 34–48. http://dx.doi.org/10.1139/t09-098.

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L’objectif de cette recherche est de comprendre comment évolue la microtexture d’une matrice kaolinitique lorsque celle-ci est soumise à un chemin triaxial de révolution. L’approche consiste à réaliser un essai triaxial sur des éprouvettes du matériau saturé faiblement surconsolidé, puis à suivre l’évolution de la microstructure (orientation des particules et porosité) le long du chemin de chargement par des observations au microscope électronique à balayage. À l’état initial, le matériau est consolidé de façon uniaxiale, et les observations montrent une anisotropie microstructurale avec orien
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Fauchille, Anne-Laure, Bram van den Eijnden, Kevin Taylor, and Peter David Lee. "Détermination de la taille et du nombre d’échantillons devant être analysés en laboratoire pour la caractérisation statistique de la microstructure d’une roche argileuse." Revue Française de Géotechnique, no. 165 (2020): 1. http://dx.doi.org/10.1051/geotech/2020024.

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À l’échelle du laboratoire, les roches argileuses sont des matériaux hétérogènes dont le comportement thermo-hydromécanique est en grande partie contrôlé par la microstructure. Le choix du nombre et de la taille des échantillons à étudier en laboratoire est déterminant pour appréhender la variabilité des propriétés de la roche argileuse à petite échelle. Cet article présente une méthode statistique permettant de préciser la surface (ou le volume) et le nombre d’échantillons à prendre en compte pour qu’une propriété p choisie caractérisant la microstructure, soit statistiquement représentative.
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Zimmermann, Karen, and J. Mark Hipfner. "Egg Size, Eggshell Porosity, and Incubation Period in the Marine Bird Family Alcidae." Auk 124, no. 1 (2007): 307–15. http://dx.doi.org/10.1093/auk/124.1.307.

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Abstract Although the ultimate factors that influence the duration of avian incubation periods are well known, we know much less about the proximate mechanisms by which birds adjust incubation period in response to selection. We tested the hypothesis that an adjustment in eggshell porosity is one such proximate mechanism (i.e., that avian species with higher ratios of incubation period to egg size lay eggs with less porous shells). Eggshell porosity affects the rate of gaseous exchange between the developing embryo and the external environment; thus, to the extent that embryonic metabolism is
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Didier, Philippe, Dominique Perret, Yves Tardy, and Daniel Nahon. "Equilibres entre kaolinites ferrifères, goethltes alumineuses et hématites alumineuses dans les systèmes cuirassés. Rôle de l'activité de l'eau et de la taille des pores / Equilibria between Fe-kaolinites, Al-goethites and Al-hematltes in ferricretes. Part of water activity and pore size." Sciences Géologiques. Bulletin 38, no. 4 (1985): 383–97. http://dx.doi.org/10.3406/sgeol.1985.1715.

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Ossebi, Walter, Simplice Bosco Ayssiwede, Félix Nimbona, et al. "Analyse zootechnique et économique des systèmes d’élevage de porcs en Casamance (Sénégal)." Revue d’élevage et de médecine vétérinaire des pays tropicaux 72, no. 1 (2019): 13. http://dx.doi.org/10.19182/remvt.31258.

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Afin de mieux cerner les caractéristiques zootechniques et économiques de l’élevage de porc, une étude diagnostique a été conduite de mars à juin 2016 auprès de 324 élevages porcins, sous forme d’enquêtes transversales et rétrospectives dans les trois régions de la Casamance au Sud Sénégal. Les résultats ont montré que l’élevage porcin était pratiqué à la fois par des hommes et des femmes mariés et instruits. Ils étaient majoritairement des ethnies Diola, Mancagne et Balante et associaient l’élevage à l’agriculture, à l’activité privée ou au commerce. Ils évoluaient dans trois systèmes d’éleva
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Sosina, A. O., O. J. Babayemi, and P. A. Adewuyi. "GIS mapping of pig population and distribution in the derived savannah, Oyo state, Nigeria." Nigerian Journal of Animal Production 49, no. 3 (2022): 198–205. http://dx.doi.org/10.51791/njap.v49i3.3550.

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Pig production in the rural areas has not been adequately linked with urban markets thus negatively affecting pig industry. Many researchers have associated major challenges confronting pig production as a business to inadequate capital, land, labour, environmental degradation and religion belief. However, information on pig population and distribution, which is key in pig production value chain is scanty, thus the need to investigate pig population and distribution in the derived savannah area of Oyo state. A three-stage sampling technique was used to purposively select 180 pig farmers, nine
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GAPUN, INNOCENSIA OLGA, and DEBI ANGELINA BR BARUS. "PENGARUH PELATIHAN MINDFULNESS UNTUK MENGURANGI BURNOUT TERHADAP ANGGOTA POLRES SIKKA." PAEDAGOGY : Jurnal Ilmu Pendidikan dan Psikologi 4, no. 4 (2025): 644–50. https://doi.org/10.51878/paedagogy.v4i4.4299.

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The purpose of this study was to see the effect of Mindfulness training on Burnout of Porles Sikka members. This research method is an associative one group pre test-post test design. This study compares the effect of increasing the decrease in burnout before and after mindfulness training is given. Sampling in this study used quantitative methods with an associative approach. Data collection techniques using questionnaires. Respondents in this study came from all members of Sikka Regional Police who will conduct training as many as 15 people. The scale used is Likert scale. The data analysis
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Dotché, Ignace Ogoudanan, Serge Gbênagnon Ahounou, Chakirath Folakè Arikè Salifou, et al. "Critères de choix et de réforme des reproducteurs mâles et femelles dans les élevages de porcs des départements de l’Ouémé et du Plateau au Bénin." Revue d’élevage et de médecine vétérinaire des pays tropicaux 71, no. 1-2 (2018): 47. http://dx.doi.org/10.19182/remvt.31224.

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L’objectif de l’étude a été de décrire les critères de choix et de réforme des reproducteurs porcins au Bénin. Une enquête a été réalisée auprès de 65 éleveurs porcins. L’analyse factorielle des correspondances a été utilisée pour identifier des groupes d’éleveurs en fonction de leurs pratiques au niveau de chaque sexe. Le groupe 1 était composé en majorité de personnes non scolarisées élevant principalement des porcs locaux en liberté. Le groupe 2 était composé majoritairement d’éleveurs de niveau du primaire ou du secondaire. Le groupe 3 comprenait des éleveurs non scolarisés et de niveau du
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Aprilia, Dhea, Harliansyah, and Nenden Lilis. "Sleep Pattern Factors on Premature Skin Aging in YARSI University Medical Students, Force of 2021." International Journal of Science and Society 6, no. 1 (2024): 82–88. http://dx.doi.org/10.54783/ijsoc.v6i1.997.

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Skin aging does not only occur in older people, but skin aging can appear when entering early adulthood or is called premature skin aging. Skin problems such as the appearance of wrinkles and fine lines on the face, apart from that hyperpigmentation can also occur and large pores, are signs of premature skin aging. Lifestyle factors greatly influence the occurrence of premature skin aging, one of which is poor sleep patterns with poor sleep quality. This study aims to test and show the relationship between sleep patterns and premature skin. Quantitative research methods were applied in this re
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Dissertations / Theses on the topic "Taille des pores"

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Mihindou-Koumba, Pierre-Claver. "Transformation du méthylcyclohexane sur zeolithes à taille de pores intermediaire." Poitiers, 2007. http://www.theses.fr/2007POIT2280.

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Ce travail se situe dans le cadre du craquage catalytique (FCC). L’objectif de cette Thèse a été d’étudier, à 350° C, plus particulièrement la transformation du méthylcyclohexane (molécule modèle représentative des naphtènes) sur zéolithes à taille de pores intermédiaire : MFI, EUO et MWW (Si/Al = 15) afin d’appréhender l’influence de la structure poreuse (présence de canaux, cages, coupes externes) et de l’acidité de la zéolithe. La zéolithe EUO, bien que possédant moins de sites protoniques et des ouvertures de pores plus étroites, est plus active que la MFI. Cette différence d’activité est
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Largeot, Céline. "Développement de supercondensateurs carbone/carbone : relation entre la taille des ions de l'électrolyte et la taille des pores de la matière active." Toulouse 3, 2009. http://thesesups.ups-tlse.fr/529/.

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L'objectif de cette thèse est d'étudier les interactions ions/carbone poreux afin d'améliorer les performances de supercondensateurs carbone/carbone. Les Carbones Dérivés de Carbures de titane (TiC-CDC) sont des carbones microporeux, dont la porosité est monodisperse. Ils ont permis d'étudier finement les interactions entre la taille des ions de l'électrolyte et la taille des pores de la matière active (carbone) dans la formation de la double couche électrochimique dans deux différents types d'électrolyte (organique et liquide ionique). Contrairement à ce qui était pensé jusqu'à maintenant, af
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Sirijarukul, Suksawat. "Elaboration de membranes à traces en poly(éthylènetéréphtalate) ayant un gradient linéaire de taille de pore et une porosité constante." Montpellier 2, 2007. http://www.theses.fr/2007MON20110.

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Nous avons fabriqué un nouveau type de membrane polymère à traces avec des gradients de taille de pore et de densité de pore le long de la membrane. Ces gradients sont fort bien contrôlés de façon indépendante et par des procédés très simples. Dans une première étape, un gradient de densité de pores est obtenu par un déplacement d'un film de poly(éthylènetéréphtalate) –PET- devant un faisceau d'ions lourds de flux variable. Dans une seconde étape, la taille de pore est contrôlée par le trempage progressif du film préalablement exposé aux ions lourds dans une solution de soude 2N à 50°C. La rel
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Malvault, Guillaume. "Détermination expérimentale de la distribution de taille de pores d’un milieu poreux par l’injection d’un fluide à seuil ou analyse harmonique." Thesis, Paris, ENSAM, 2013. http://www.theses.fr/2013ENAM0040/document.

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Deux approches pour caractériser les milieux poreux en terme de distribution de taille de pores (DTP) sont développées au sein de l'équipe ECPS. Ce travail a pour but de confirmer expérimentalement leurs validités. A l'instar des autres méthodes utilisant l'intrusion du mercure, l'adsorption isotherme ou la thermoporosimétrie, la première méthode consiste à utiliser un fluide à seuil d'écoulement. En effet, l'utilisation de l'écoulement d'un fluide à seuil de type Herschel-Bulkley, au travers d'un poreux, en fonction du gradient de pression permet (en utilisant les solutions analytique et numé
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Gassara, Sana. "Préparation des membranes à base de poly(étherimide) fonctionnalisées et à taille de pores contrôlée : application à la séparation sélective des ions et des acides aminés." Thesis, Montpellier 2, 2013. http://www.theses.fr/2013MON20131.

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Des gammes de membranes en poly(étherimide) (PEI) fonctionnalisées avec des tailles de pores contrôlées ont été préparées en se basant sur deux étapes successives : élaboration des membranes UF de seuil de coupure (MWCO) de 120 ± 10 kDa par la technique inversion de phase induite par la coagulation dans l'eau suivie d'un traitement de surface par une solution aqueuse contenant des oligomères aminés. Une modification avec un dérivé monoaminé commercial, le Jeffamine M-2070, a donné des membrane recouvertes de brosses de courtes chaines de poly(éthylèneglycol) (PEG-PEI) qui ont rendu la membrane
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Letellier, Franck. "Influence de la taille des pores du support MCM-41 sur les propriétés catalytiques du platine en hydrogénation et hydrodesalkylation d'aromatiques." Paris 6, 2004. http://www.theses.fr/2004PA066206.

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Meynard, Joane. "Influence de la taille, de la morphologie et de la distribution spatiale des pores sur la conductivité thermique de céramiques UO2." Thesis, Aix-Marseille, 2019. http://www.theses.fr/2019AIXM0607.

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Dans un réacteur nucléaire, le comportement des combustibles est piloté par des phénomènes thermiques. C'est pourquoi il est important de modéliser précisément leur comportement thermique.L’objectif de ces travaux est d’évaluer l’impact de la microstructure sur les propriétés thermiques d’un combustible UO2 à 50°C.Des céramiques UO2 ont été fabriquées. Deux familles de porosité ont été identifiées à l’aide de différentes techniques d’imagerie (microscopie optique, MEB-FIB et tomographie X) : la porosité occluse de forme quasi-sphérique et localisée dans les granulats d’UO2 et un réseau de poro
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Altinier, Maria Victoria. "Etude de la composition isotopique des eaux porales de l'argilite de Tournemire : inter-comparaison des méthodes de mesure et relations avec les paramètres pétrophysiques." Paris 11, 2006. http://www.theses.fr/2006PA112065.

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Rodriguez, de Castro Antonio. "Flow experiments of yield stress fluids in porous media as a new porosimetry method." Thesis, Paris, ENSAM, 2014. http://www.theses.fr/2014ENAM0021/document.

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Les méthodes expérimentales utilisées actuellement pour déterminer la distribution de taille des pores (DTP) dans les milieux poreux présentent des inconvénients, tels que par exemple, la toxicité des fluides employés (porosimétrie à mercure). La base théoriques d'une nouvelle méthode pour obtenir la DTP a été proposée dans la littérature. Celle-ci est fondée sur l'injection de fluides à seuil, caractérisés par une contrainte de cisaillement en deçà de laquelle ils ne s'écoulent pas. L'idée principale de ces travaux théoriques est que l'écoulement de fluides à seuil à travers un milieu poreux
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Ali, Imtiaz. "Contribution à l'étude du comportement mécanique des fibres recyclées. Applications aux supports fibreux." Phd thesis, Université de Grenoble, 2012. http://tel.archives-ouvertes.fr/tel-00872112.

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Les objectifs principaux des travaux de recherche réalisés sont de caractériser, quantifier et corréler les changements induits lors du recyclage sur les fibres, la pâte et le papier. Pour ce faire, des techniques de caractérisation spécifique ont été utilisées telles que la chromatographie inverse d'exclusion stérique (ISEC), l'analyse mécanique dynamique (DMA), la microscopie électronique à balayage environnementale (ESEM), la microscopie à force atomique (AFM) et la tomographie à rayons X. Le racornissement des fibres à elle seule ne peut pas expliquer totalement la perte de résistance des
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Books on the topic "Taille des pores"

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Baltet, Charles. Culture du poirier: Comprenant la plantation, la taille, la mise à fruit et la description abrégée des cent meilleures poires. Adamant Media Corporation, 2001.

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Book chapters on the topic "Taille des pores"

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Qi, Yue, Ruqing Zhong, Benjamin Kaiser, et al. "Working with Uncertainties: An Adaptive Fabrication Workflow for Bamboo Structures." In Proceedings of the 2020 DigitalFUTURES. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-4400-6_25.

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AbstractThis paper presents and investigates a cyber-physical fabrication workflow, which can respond to the deviations between built- and designed form in real-time with vision augmentation. We apply this method for large scale structures built from natural bamboo poles. Raw bamboo poles obtain evolutionarily optimized fibrous layouts ideally suitable for lightweight and sustainable building construction. Nevertheless, their intrinsically imprecise geometries pose a challenge for reliable, automated construction processes. Despite recent digital advancements, building with bamboo poles is sti
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Elahi, Sepideh Hakim, and Isabel C. Escobar. "Investigation of the Effects of Thickness and Presence of Pore Formers on Tailor-Made Ultrafiltration Polysulfone Membranes." In ACS Symposium Series. American Chemical Society, 2011. http://dx.doi.org/10.1021/bk-2011-1078.ch016.

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Didiot, Mylène. "Chapitre 3. Construire et entretenir l’enceinte urbaine de Metz." In Défendre Metz à la fin du Moyen Âge, translated by Anne Wilmouth and Céline Sretenovic. Éditions de l’Université de Lorraine, 2017. https://doi.org/10.4000/13o1m.

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La construction et l’entretien de l’enceinte médiévale de la ville de Metz ont nécessité de grandes quantités de matériaux, l’emploi d’ouvriers qualifiés et la mise en place d’une gestion efficace des différents chantiers. L’étude des paiements dans la comptabilité des Gouverneurs des Murs, et plus particulièrement ceux des comptes détaillés de 1484 et 1494, permet d’identifier plus d’une vingtaine de corps de métiers spécialisés qui emploient des matériaux de diverses natures.La pierre est évidemment un matériau incontournable. Au départ, les blocs étaient prélevés dans les carrières du mont
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Bouwmeester –, W., E. Schlangen, and van den Bos. "Influence of curing on the pore structure of concrete." In Tailor Made Concrete Structures. CRC Press, 2008. http://dx.doi.org/10.1201/9781439828410.ch16.

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Swastic and Jegatha Nambi Krishnan. "Nanoporous Metallic Films." In Nanopores [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.95933.

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Nanoporous metallic films are known to have high surface to volume ratio due to the presence of pores. The presence of pores and ligaments make them suitable for various critical applications like sensing, catalysis, electrodes for energy applications etc. Additionally, they also combine properties of metals like good electrical and thermal conductivity and ductility. They can be fabricated using top-down or bottom-up approaches also known as dealloying and templating which give the fabricator room to tailor properties according to need. In addition, they could find potential applications in m
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Wang, Chang Jiang, Kevin Hazlehurst, Arun Arjunan, and Lida Shen. "Analysis of the Porous Structures from Laser Powder Bed Fusion Additive Manufacturing." In Advances in Transdisciplinary Engineering. IOS Press, 2021. http://dx.doi.org/10.3233/atde210019.

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Open and closed porous structures with lattice and honeycomb geometry can be built using laser powder bed fusion additive manufacturing processes. The porous structures can be used to tailor the mechanical properties of a component or provide other functionality, such as for bone ingrowth in medical implants. Porous structures were created and analysed in this paper both physically and using finite element modelling. It was found that the accuracy of the built parts was reasonable and within the manufacturing processes general tolerance of +/- 50 μm. However, it was noticeable that the corners
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Eimeleus, K. B. E. E. "Skis as a Brake." In Skis in the Art of War, translated by William D. Frank and E. John B. Allen. Cornell University Press, 2019. http://dx.doi.org/10.7591/cornell/9781501747403.003.0020.

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This chapter discusses using skis as a brake. For a skier-sportsman, braking with skis is a more suitable solution, but it requires better command over one's equipment than braking with poles. A skier can brake with both skis, or just one (in two distinct styles). When braking with two skis, the tips draw together while the tails tend to split apart. This method works well on hard snow; in soft snow, one must employ it gradually, otherwise a large pile of snow accumulates in front of the skis, movement stops abruptly, and a skier tumbles forward from their momentum. A variation of this is brak
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Maraddi, A. S. "Polymer-Based Membranes." In Advanced Functional Membranes. Materials Research Forum LLC, 2022. http://dx.doi.org/10.21741/9781644901816-1.

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Membrane science and technology is increasingly playing an important role in maintaining environmental health. Polymer based membranes in particular show great potential in removing environmentally hazardous pollutants from the wastewater. Membrane technology has also been widely used for ground, surface and seawater desalination which is serving the humanity by providing high quality drinking water. Polymeric membranes have been categorized based on their pore size and their distribution which make them tailor made and innovative separation media namely, reverse osmosis, nanofiltration, ultra
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Ripmeester, John A., and L. S. Kotlyar. "2H NMR and Gel Formation of the Ultrafine Solids Fraction Associated with the Athabasca Oil Sands Fine Tails." In Nuclear Magnetic Resonance Spectroscopy in Environment Chemistry. Oxford University Press, 1997. http://dx.doi.org/10.1093/oso/9780195097511.003.0017.

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The two oil sands plants operated by Syncrude Canada Ltd. and Suncor Canada Ltd. near Fort MacMurray, Alberta, use a hot water process for the separation of bitumen from oil sands. In brief, hot water and oil sands, with caustic soda as dispersing agent, are mixed thoroughly, and bitumen is floated to the top of the resulting slurry by streams of air. After secondary bitumen recovery, the remaining tailings are carried to ponds, where the coarse sands are used to form dikes, the fine tails are left to settle, and freed water is recycled. Typical production figures for the Syncrude plant are 39
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Peterson, Janine Larmon. "Methods of Contesting Authority." In Suspect Saints and Holy Heretics. Cornell University Press, 2019. http://dx.doi.org/10.7591/cornell/9781501742347.003.0009.

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This chapter studies the methods that individuals and communities used to thwart popes and their agents. Bishops, civic officials, and devotees often fought hard to keep a saint's cult viable once a majority reached consensus that the person was holy. In some notable cases, they did not fear inquisitors and rejected their authority. Muzio di Francesco of Assisi, an antipapal rebel in the early fourteenth century, purportedly remarked, “I would not fear sentences of excommunication and interdict, any more than I would fear the tail of a donkey.” This evidently was a popular saying in late medie
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Conference papers on the topic "Taille des pores"

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Armanu, Emanuel Gheorghita, Marius Sebastian Secula, Nicanor Cimpoesu, Hermann J. Heipieper, and Irina Volf. "A BIOBASED NANO/MICRO-STRUCTURED MATERIAL FOR MICROORGANISMS� IMMOBILIZATION." In SGEM International Multidisciplinary Scientific GeoConference 24. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/6.1/s24.01.

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Microbial immobilization is a promising strategy for various applications, including environmental remediation and bioprocess engineering. However, the efficacy of immobilization largely depends on the characteristics of the carriers. Biomass wastes are renewable and abundant resources that can be subjected to hydrothermal carbonization (HTC) for hydrochar production, a resulting carbonaceous material with a porous structure. This porous architecture offers extensive surface area and facilitates the colonization and growth of microorganisms, working as a protective buffer zone in highly pollut
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Jordan, M. M., K. S. Sorbie, P. Jiang, M. D. Yuan, A. C. Todd, and L. Thiery. "The Effect of Clay Minerals, pH, Calcium and Temperature on the Adsorption of Phosphonate Scale Inhibitor onto Reservoir Core and Mineral Separates." In CORROSION 1994. NACE International, 1994. https://doi.org/10.5006/c1994-94049.

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Abstract During a scale inhibitor squeeze treatment, the dynamics of the inhibitor return is governed by the inhibitor/rock interaction. In the case of adsorption/desorption inhibitor treatments, this interaction is described through the inhibitor/rock adsorption isotherm. The rock mineralogy plays an important role in determining the nature of the adsorption isotherm and clays in particular are known to strongly affect the adsorption process. However, no previous work has (a) presented a systematic study of the effects of various clays on inhibitor adsorption and (b) clearly demonstrated the
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Xie, H., G. J. Yang, C. X. Li, and C. J. Li. "Multi-Scale Multi-Points Inter-Splat Connection Enhanced Sintering Model for Plasma-Sprayed Lamellar TBCs." In ITSC 2014, edited by R. S. Lima, A. Agarwal, M. M. Hyland, et al. DVS Media GmbH, 2014. http://dx.doi.org/10.31399/asm.cp.itsc2014p0774.

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Abstract Plasma-sprayed thermal barrier coatings are highly insulating due to intersplat pores. High-temperature exposure, however, leads to pore healing and a loss of thermal insulating capability. Previous sintering models based on the healing of iso-thick pores cannot explain the ultrafast sintering kinetics observed during the initial sintering stage. To better understand the sintering process and the kinetics of pore healing, a study was conducted on the changes that occur at the interfaces between lamellae at high temperatures. It was found that splat surfaces develop multiscale convexes
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4

Schondel, J. Patrick, and Michael R. Robinson. "VECTOR Program Background and Plan." In ASME 1998 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/98-gt-145.

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The U.S. Navy in cooperation with the Ministries of Defense of Germany and Sweden are initiating a 3-year demonstration program in 1998 to evaluate and define the benefits of thrust vectoring beyond those already understood for Close-in-Combat (CiC). The VECTOR (Vectoring ESTOL Control and Tailless Operational Research) program will capitalize on the X-31 airframe and a contractor team that includes Boeing, G.E., DASA, Volvo, and SAAB to demonstrate the following technologies: • AVEN® Nozzle - a G.E. designed vectoring nozzle applicable to the F404 family of engines • Extremely Short Takeoff a
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Ekberg, J., U. Klement, S. Creci, and L. Nordstierna. "Porosity Measurements on Heat Treated Suspension Plasma Sprayed YSZ Coatings Using NMR Cryoporometry." In ITSC2017, edited by A. Agarwal, G. Bolelli, A. Concustell, et al. DVS Media GmbH, 2017. http://dx.doi.org/10.31399/asm.cp.itsc2017p0308.

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Abstract Suspension plasma sprayed (SPS) coatings can be produced with fine powder particles and tailor-made porosity. This allows to achieve low thermal conductivity which makes the coatings attractive as e.g. topcoats in thermal barrier coatings (TBCs). Used in gas turbine applications, the TBCs are exposed to high temperatures which leads to alterations of the microstructure. To obtain coatings with optimized properties, possible microstructure alterations like closing of pores and opening of cracks have to be taken into account. Hence, in this study, TBC topcoats consisting of 8 wt.% yttri
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Jandhyala, Siva Rama Krishna, and Walmy Cuello Jimenez. "Design Tool to Tailor Properties of Cement for P&A Applications." In Offshore Technology Conference. OTC, 2023. http://dx.doi.org/10.4043/32624-ms.

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Abstract As oil and gas wells approach the end of their productive lifetime, they must be permanently abandoned. In recent years, there has been a lot of emphasis on creating modeling tools for design tailoring and placement of abandonment plugs. Moreover, it is of equal significance to devise a process and design tool for achieving long-term integrity of abandonment plugs. Such a design tool will help understand and mitigate the risks of thermo-mechanical damage or flow through plugs. A sound underlying design process should demonstrate the following attributes - (i) be flexible to accommodat
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Marković, Marko, Lara Kašca, Đorđe Nešković, et al. "GRE tunnel utilization for minimizing multi-vendor network equipment issues for various transmission channels." In 11th International Scientific Conference on Defensive Technologies - OTEX 2024. Military Technical Institute, Belgrade, 2024. http://dx.doi.org/10.5937/oteh24072m.

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In the realm of battlefield operations, where seamless communication is paramount, the utilization of all available networking equipment is indispensable. However, the diverse array of vendor equipment often poses compatibility challenges across different transmission channels. These issues are frequently rooted in the varying limitations of packet length among the equipment, leading to undesirable packet fragmentation and potential loss. To mitigate these challenges, we have explored the efficacy of GRE (Generic Routing Encapsulation) tunnel utilization. By employing GRE methodology, we can t
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Broughton, Justin, and Yogendra Joshi. "A Numerical Investigation of Additive Manufactured Foam Structures for Single Phase Hotspot Thermal Management." In ASME 2019 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/ipack2019-6519.

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Abstract Wide band-gap (WBG) power devices have been investigated for their higher power densities, efficiencies, and operating temperatures. However, implementation of WBG devices may cause increased volumetric heat generation despite efficiency increases due to a significant decrease in volume. To fully take advantage of the benefits offered by these devices, the packaging, including cooling infrastructure, must also be addressed. Additive manufactured (AM) structures, based on unit cells seen in stochastic foams, have been investigated as an improvement in thermal management for electric ve
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Gordeev, E. I. "Detecting near-tail current sheet formation using isotropic boundaries: lessons from global MHD." In Physics of Auroral Phenomena. FRC KSC RAS, 2020. http://dx.doi.org/10.37614/2588-0039.2020.43.002.

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A number of recent studies suggests an existence of magnetotail current sheet configurations with tailward Bz gradient during the growth phase of the substorm. Such configurations are especially interesting since they are potentially unstable for different types of instabilities and can lead to explosive reconfiguration of the magnetosphere. However, the observations are rare and ability to observe tailward gradients is very limited. Here we use the global MHD configuration with near-tail Bz minimum to investigate the regions with adiabatic and non-adiabatic behavior of energetic particles. Th
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Hassaine Daoudji, Doriane Ibtissam, Quentin Struss, Amrid Amnache, Étienne Léveillé, Mahmood Reza Salim Shirazy, and Luc G. Fréchette. "Impact of Micropillar Density Distribution on the Capillary Limit of Heat Pipes." In ASME 2020 Heat Transfer Summer Conference collocated with the ASME 2020 Fluids Engineering Division Summer Meeting and the ASME 2020 18th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/ht2020-9001.

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Abstract This paper shows the performance enhancement of heat pipes by tailoring the density distribution of micropillar wicks to minimize viscous pressure loss while maintaining sufficient capillary pumping. In a heat pipe, capillarity and permeability are linked, since small pores create higher capillary pumping while unfortunately inducing more pressure drop along the heat pipe. This pressure loss accumulates along the heat pipe, leading to a non-uniform pressure difference between the liquid and vapor. Therefore, we do not need a uniform capillary pressure to withstand this difference. Thi
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Reports on the topic "Taille des pores"

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Peitz, David, and Naomi Reibold. White-tailed deer monitoring at Arkansas Post National Memorial, Arkansas: 2005–2020 trend report. Edited by Tani Hubbard. National Park Service, 2021. http://dx.doi.org/10.36967/nrr-2285087.

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From 16 years (2005–2020) of monitoring trends in white-tailed deer within a defined survey area of Arkansas Post National Memorial, we have been able to demonstrate both population declines and recoveries. The adjusted count of deer had a seven-fold increase between 2007 and 2011 following a two-year decline and a three-fold increase between 2017 and 2019 following a six-year decline. Overall, the deer population has declined slightly, averaging a 0.5% reduction in herd size annually. The number of deer in the survey area ranged from 16.77 ± 21.26 (mean + 95% CI) individuals/km2 in 2007 to 11
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Hubbard, Tani, Jennifer Haack-Gaynor, David Peitz, Jennifer Haack-Gaynor, Tani Hubbard, and David Peitz. White-tailed deer monitoring at Arkansas Post National Memorial, Arkansas: 2005?2024 trend report. National Park Service, 2024. http://dx.doi.org/10.36967/2306678.

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During the 20-year period (2005?2024) that the Heartland Inventory and Monitoring Network has monitored trends in white-tailed deer within a defined survey area of Arkansas Post National Memorial, we have observed both population declines and recoveries. The adjusted deer count increased seven-fold between 2007 and 2011 following a two-year decline and increased three-fold between 2017 and 2019 following a six-year decline. Currently, Arkansas Post National Memorial is experiencing a five-year decline in deer based on adjusted counts. Across the 20-year monitoring period, a non-significant (P
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